Management Information and Communication System Essay - 1

Management Information and Communication System - Essay Example In order to achieve the constant supply of raw materials and the supply of goods and services to the consumers, a business firm should ensure that their supply chain management systems are effective. In this case, only an effective supply chain management system can enhance the firm’s responsiveness to its customers’ needs and utilisation of its resources. In effect, the supply chain management system enables a firm’s coordination during the processes of planning, production, and logistics with the suppliers. Business Benefits of Supply Chain Management Systems A business should be able to evaluate the status of its supplies and resources while maintaining an inventory system along the supply chain. Bowersox, Closs and Cooper (2010, p. 133) called this visibility, which is the ability of a business to track its resources and inventory along the supply chain while evaluating and managing any information regarding the resources and inventory. In effect, supply chai n management systems benefits a business by using the information in the supply chain to plan against any potential problems along the supply chain. Consequently, the evaluation of these problems enables businesses to manage any potential risks, which enhances the responsiveness of a business towards its consumers’ needs. ... In addition, a business will benefit by planning for the consumers’ constraints such as transportation and storage capacities, raw materials required, and the amount a firm should produce in order to meet the consumers’ demands. Supply Chain Management Systems and Coordination of Planning, Production, and Logistics with Suppliers As earlier indicated, one business benefit of supply chain management systems to a firm is the ability of a firm to remain responsive to its consumers’ demand. In effect, an effective system will enhance a firm’s planning of its production to meet the market demand, which is the process of demand management. Bowersox, Closs and Cooper (2010, p. 133) noted, â€Å"Demand management develops the forecast that drives anticipatory supply chain processes.† The importance of the â€Å"anticipatory supply chain processes† in a business firm is to establish the amount of products to produce and the raw materials required in t he production of the products. In effect, an organisation maintains a steady contact with the suppliers of raw materials based on the firm’s projections and stock available. A supply chain management system enables a business to identify the goods that require production in a firm. In this way, a firm will be able to balance between its ability in terms of resources available and the manufacturing stock. It is important to point out that these resources include the most significant resource of human capital. Bowersox, Closs, and Cooper (2010, p. 135) called this product planning and noted, â€Å"It uses the statement of requirements obtained from demand management in conjunction with

Internet gambling Essay Example for Free

Internet gambling Essay Internet gambling represents one of the fastest growing segments of online activities with hundreds of websites providing users the opportunity to place bets on anything, ranging from casino games to sporting events. Billions of dollars in bets are placed each day in these online gambling rings. Thousands of these sites exist and many countries economies benefit from them. Sadly, Americas leaders fail to see the benefits in allowing online gambling to take place on American soil. Whether it be for recreation or as their only source of income, hundreds of thousands of Americans participate in the phenomenon known as online gambling. For the countries (Great Britain, France, and a number of islands in the Caribbean) that host these sites, it means millions of dollars being taxed each year for allowing the gambling sites to exist. President Bush signed into effect in mid-October a bill that outlaws sending credit card payments or other funds to websites involved with online gambling. Consequently, many of the stocks of these corporations are bound to decrease severely, potentially hurting the nations economy. A countless number of college students across America participate in online gambling, a small percentage of those depending solely on the money they make from gambling to pay for their tuition. This new law will leave these people scrambling to find jobs to stay in school. If the job search fails, these students will be forced to go deep into debt by taking out loans or drop out of college altogether, thereby making the United States lose valuable money that these students are paying for their education. Putting internet poker aside for now, online sports wagering has been around for as long as anyone can remember. Before the new bill passed, a person could sign onto a gambling site, enter their handle and password, and have unlimited access to hundreds of betting lines, point spreads, and over/under numbers. One more click and they can place their bets on the game or race of their choice. With the new law, the aforementioned is a part of the distant past. Place a bet over the phone and rest easy. Place the same bet online and face stiff penalties including steep fines and possibly jail time. This simply doesnt make sense. America has tried prohibition before, in the 1920s. Despite the governments best efforts, Americans continued to consume alcohol. Seeing that they were missing out on a huge source of revenue, legislators reversed the law and began taxing the alcohol. This new internet gambling law works in much the same way, forbidding the participation in online gambling to everyone on American soil. However, the internets boundaries stretch further than any government on earth can ever begin to regulate fully. With many people being computer literate these days, it is undoubtedly impossible to stop these people from finding ways around the law. Much like the prohibition law of the 1920s, Americas government is missing out on a huge amount of taxable income. This definitely could help the government pull out of the extreme debt they are in. Prohibiting internet gambling also goes against one of the unalienable rights that America was founded upon: the pursuit of happiness. Gambling has the potential to make people happy, and prohibiting them from participating in it goes against the Declaration of Independence that our founding fathers laid down as rules for Americans to abide by. Although legislators have succeeded in passing a law against internet gambling, it will be found virtually impossible to enforce it. States will begin to grow tired of watching potential tax revenue float over to other countries. The move that makes the most sense for the American government is to legalize internet gambling, tax the income it generates, and increase the economy. After all, abiding by the immortal words spoken by Kenny Rogers in The Gambler, Americans should know when to hold ? em, know when to fold ? em, know when to walk away, and know when to run.

The Role Of Marine Protected Areas Environmental Sciences Essay

The Role Of Marine Protected Areas Environmental Sciences Essay Among different ecosystem in the world coral reef ecosystem is one of the most important ecosystem which benefits millions of people around the whole world by buffering coastal communities against ocean storms, supply of animal protein, pharmaceuticles product made from harbor organisms and also provide esthetic values for tourists, support tourism based economies and also act as a living laboratory for scientists. Coral reefs are threatened by human activities like, sedimentation, pollution, overfishing and other factors (Dirk Lauretta, 1998). Destructive fishing practices with the use of poisons, expolsives, fine mesh nets reduces entire reefs ecosystems. Among all the marine environment, coral reefs are home to more than a quarter of all known marine fish species (M. Don, 1995). Coral reefs occupy less than one percent of the Earths marine environment, but are home to more than a quarter of all known marine fish species and tens of thousands of other species found nowhere else on earth. The degradation of coastal ecosystems not only results in a loss of biodiversity but also a loss of revenue, depleted fish stocks and increased exposure of communities to storms. Marine protected areas is a protected areas of ocean covering a wide range of marine areas with some level of restriction to protect living, non-living, cultural and historic resources. World Conservation Union (IUCN) defines marine protected areas as, any area of the intertidal or subtidal terrain, together with its overlying water and associated flora, fauna, historical and cultural features, which has been reserved by law or other effective means to protect part or all of the enclosed environments. In the world there are now 1300 marine protected areas and many more are in planning stage (Kelleher et al. 1995). Conservation and sustainable provision for human uses are the main objectives for marine protected areas. Marine protected areas can include: coral reefs, seagrass beds, tidal lagoons, mudflats, saltmarshes, mangroves, rock platforms, shipwrecks, archeological sites, underwater areas on the coast, and seabeds in deep waters (Australian Government). Marine protected areas are mainly dedicated to protect the biodiversity rich areas, like coral reefs. Among the most diverse ecosystem on the planet coral reefs are one of them. Coral reefs are important asset for biological and natural heritage, which serves as sea food, medicinal materials, income from tourism, buffering coastal cities and protect from storm damage (Dirk Lauretta, 1998). Description: Coral reefs have structural complexity with high biodiversity and densities. Globaly there are approximately 93,000 coral species are recorded and suggested estimates of reef associated species between one and three million which covers 284,000km2 or 0.09% of the total surface area of the ocean. Though these complex ecosystems are rare, 4000 worldwide fish species use these ecosystem as their home (Steven, 2008). Humans are increasingly rely on coral reefs because of their proximity to shore, fisheries support and recreational opportunities. But unfortunately these ecosystems are in greate threat due to overfishing, destructive fishing practices, land based pollution, agriculture, deforestation and global climate change (Wilkinson,1998). Coral reefs have biological, socioeconomic, scientific and aesthetic values (Smith,1978; Salm Kenchinton, 1984; Clark et al., 1989) and there are many ways to conserve or manage coral reef resources through the establishment of marine protected areas (Bohnsack,1990; Polunin,1990; Rowley,1994) The majority of worlds coral reefs are situated in the waters of developing nations which is a big challenge for conservation of these ecosystems (Souter Linden, 2000), because of poverty, hunger, political instability and economic development, where coral reef preservation is not the top priorities for the governments (McManus,1997). Many coral reef fishes and invertebrates are relatively site attached and target fish species moved to greater distances and also play intra-reefal movements between reefs across channels (Davies, 1995; Chapman Kramer, 2000). Now a days coral reefs are in serious trouble in the whole world by combination of stresses which are threatening their survival, and also by the following facts overexploitation of resources and commercial fishing; degradation and destroy the habitat by destructive fishing practices increasing coastal populations, which are expected to double in the next 50 years; poor and unauthorized uses of land and runoff of nutrients, sediments and pollutants. disease outbreaks, poor water quality and pollutants; coral bleaching with seawater temperatures increasing and global change; and deforestation of coastal mangrove. Even apparently transient fish such as the blue trevally show strong site fidelity (Holland et al. 1996). This has huge implications for MPA design. Though many species like coral trouts move long distance (Davies 1995; Kramer Chapman 1999), within the reefs but their densities will increases within the MPA area which can only protect part of an island (Russ Alcala 1996a; Evans Russ in press). MPAs established to protect the whole reefs or part of the island to get the best result for conservation and larval export objectives (ISRS, 2004). Reefs at Risk: A Map-Based Indicator of Threats to the Worlds Coral Reefs, is the first global assessment of coral reefs to map areas at risk from overfishing, coastal development, and other human activity. The study finds that nearly 60 percent of the earths coral reefs are threatened by human activity ranging from coastal development and overfishing to inland and marine pollution leaving much of the worlds marine biodiversity at risk. Key findings of the report Coral reefs of Southeast Asia, the most species-rich on earth, are the most threatened of any region.  More than 80 percent are at risk, primarily from coastal development and fishing- related pressures. Most United States reefs are threatened.  Almost all the reefs off the Florida coast are at risk from a range of factors, including runoff of fertilizers and pollutants from farms and coastal development. Close to half of Hawaiis reefs are threatened, while virtually all of Puerto Ricos reefs are at risk. Nearly two-thirds of Caribbean reefs are in jeopardy.  Most of the reefs on the Antilles chain, including the islands of Jamaica, Barbados, Dominica and other vacation favorites, are at high risk. Reefs off Jamaica, for example, have been ravaged as a result of overfishing and pollution. Many resemble graveyards, algae-covered and depleted of fish. Reefs at risk revisited (2010) include the same local and regional threats as previous reefs at risk with two new components: (a) an assessment of threats related to climate change (coral bleaching and ocean acidification), and (b) an evaluation of the social and economic implications of reef degradation on the worlds coastal populations. The establishment of most marine reserves have two main objectives: conservation and sustainable provision for human uses. Marine protected areas are important for their biological dimensions, such as, productivity, importance as habitat. Breeding and migration, and biodiversity. Marine protected areas used as tool for the marine environment to meet management objectives which reflect political and social views and reconcile fishery and conservation concerns. The success of MPA depends on the quality of governance and the social and economic situation how people use marine goods and services (Jennings, 2009). The report done by fisheries doctorines summarize the role of marine protected areas are; small MPA can lead the increase of number and size of molluscan and crustacean with low mobility, reduction in fishing mortality and changes in habitates, increases in spawning, evidence of spil over, protecting juveniles, spin-off benefits for commercial species (Defra, 2006). MPAs can provide great role for coral reefs, for example, the worlds biggest Great Barrier Reef one of the largest protected area allowing sustainable utilization of the reef with numerous uses often conflicting needs by providing support for the economic, social, and political arguments to protect coral reefs. Reefs are tremendously high dynamic and open ecosystem, depends on currents carrying nutrients, water and oxygen, transporting larvae and other materials and also carry pollutants and sediments which inhibit new recruitment of coral and fish in the reefs community. MPAs are established as a conservation tool, play significant role in tourism, positive effects on abundances, biomass, sizes and reproductive outputs of many reef species. The use of MPAs to manage the long distance migrating species by the protection of the habitats by a small portion of certain species population thought to have high site fidelity (Gell Roberts, 2003). Many coral reef fish species use different habitats like, sea grasses, estuaries, and mangrove swamps (Nagelkerken et al. 2002; Mumby et al. 2004), and MPAs can protect these representative habitats on their life stages for management purposes. Ecological linkages The marine ecosystem controlled by bottom-up such as variable recruitment (Doherty Williams, 1988) or top-down processes through predation (Grigg et al. 1984). A wide range of species coral reef fish shows high variable recruitment (Newman et al. 1996; Meekan et al. 2001) which may impact on the ecosystem. Both coral reef fish abundances and assemblage structure affected by recruitment and predation. Predation on the other hand may serve to control outbreaking species such as crown-of-thorns starfish (Dulvy et al. 2004b), MPA size potentially influencing the ability of a MPA on part of an island or reef to control such outbreaks. Role of marine protected areas: Protection of different species which are very sensitive for fishing is the main role of marine protected area, such as fragile benthichabitat-forming organism like, gorgonians are protected by MPAs. Reef biodiversity also improved their habitat quality by MPAs. MPAs also play improtant role for those species which are not doing well under any sort of fisheries management system. In reef MPAs can become more valued for divers due to increase in abundance, size and diversity of reef associated fish species (Williams and Polunin, 2000). It also recover the stocks of different species and ecosytem functioning within the area. Another important role is reducing or eliminating fishing mortality. Coral reef fish also based on increases in fish density and size (Russ, 2002). The size of MPA depends upon the goal and ecology of the relevant species. Smaller MPAs provide local fisheries benefits and larger MPAs provide more regional benefits through larval production and recruitment (Robert, 2000). Conclusion: MPAs are not the best solution for fisheries management but its a useful tools for preservation and enhancement for certain critical habitats, but in specific condition MPAs may be benifited for commercial mobil species (Defra, 2006). Last three decades MPAs used as a management framework for coral reef conservation but rarely achieved their goals due to lack of regulation enforcement. From the 1300 MPAs management only 383 MPAs are effective which is only 29% (Russ, 1999). Among the parks only 9% are high management level that generally achieves their management objectives (McClanahan, 1999) and only 660 MPAs contained coral reefs by 2000 (Spalding, 2001). Sometimes the design and the implimentation of MPAs differ between developed and non-developed countries, because people much more dependent on resource exploitation. In most cases community involvement and support during MPA establishment are most important for MPA success (ISRS, 2004). Referrence: ISRS (2004) Marine Protected Areas (MPAs) in Management of Coral Reefs. Briefing Paper 1, International Society for Reef Studies, pp: 13. Anon. (1990). Environmental Management Plan of the Seychelles 1990-2000. Department of Environment, Government of Seychelles, Mah6, Seychelles. B. Dirk, B. Lauretta et al. (1998) A Map-Based Indicator of Threates to the Worlds Coral Reefs, Reefs at Risk, ISBN: 1-55963-257-4. Bohnsack, J. A. (Plan Development Team) (1990). The potential of marine fishery reserves for reef fish management in the US southern Atlantic. NOAA Tech. Mem,, C. Wilkinson, Editor,  Status of coral reefs of the world: 1998, Australian Institute of Marine Science, Cape Ferguson, Queensland, Australia (1998). Chapman MR, Kramer DL (2000) Movement of fishes within and among fringing coral reefs in Barbados. Environmental Biology of Fishes 57:11-24. Clark, J. R., Causey, B. Bohnsack, J. A. (1989). Benefits from coral reef protection: Looe Key Reef, Florida. In Coastal Zone 89, ed. O. T. Magoon, H. Converse, D. Miner, L. T. Tobin D. Clark. American Society of Civil Engineers, New York, pp. 3076-86. D.W. Souter and O. Linden, The health and future of coral reef systems,  Ocean Coastal Management  43  (2000), pp. 657-688. Davies CR (1995) Patterns of movement of three species of coral reef fish on the Great Barrier Reef. Ph.D. diss., James Cook University of North Queensland, Townsville, Australia. 212p. Defra, 2006, W:fishsciencepdfMPAs Brief Summary of Conclusions from 3 reports for Web.doc. The potential role of Marine Protected Areas (MPAs) for fisheries management purposes: Fisheries Directorates summary of the main conclusions emerging from three desk studies. Doherty PJ, Williams DM (1988) The replenishment of coral-reef fish populations. Oceanography and Marine Biology 26: 487-551. Don McAllister, Status of the World Ocean and Its Biodiversity, Sea Wind 9, no. 4 (1995), 14. Gell FR, Roberts CM (2003) Benefits beyond boundaries: the fishery effects of marine reserves. Trends in Ecology and Evolution 18: 448-455. Grigg RW, Polovina JJ, Atkinson MJ (1984) Model of a coral reef ecosystem III. Resource limitation, community regulation, fisheries yield and resource management. Coral Reefs 3: 23-27. Jennings, S. 2009. The role of marine protected areas in environmental management. ICES Journal of Marine Science, 66: 16-21. Kelleher, G., C. Bleakley, and S. Wells, editors. 1995. A global representative system of marine protected areas.Volume Great Barrier Reef Marine Authority, World Bank, and World Conservation Union (IUCN). Environment Department, World Bank, Washington, D.C., USA. McClanahan TR. Is there a future for coral reef parks in poor tropical countries?. Coral Reefs 1999;18:321-5. McManus JW. Tropical marine fisheries and the future of coral reefs: a brief review with emphasis on Southeast Asia. Coral Reefs 1997;16S:S121-7. Meekan MG, Ackerman JL, Wellington GM (2001) Demography and age structures of coral reef damselfishes in the tropical eastern Pacific Ocean. Marine Ecology Progress Series 212: 223-232. Mumby PJ, Edwards AJ, Arias-Ganzalez JE, Lindeman KC, Blackwell PG, Gall A, Gorczynska MI, Harborne AR, Pescod CL, Renken H, Wabnitz CCC, Llewellyn G (2004) Mangroves enhance the biomass of coral reef fish communities in the Caribbean. Nature 427: 533-536. Nagelkerken I, Roberts CM, van der Velde G, Dorenbosch M, van Riel MC, de la Morinere EC, Nienhuis PH (2002) How important are mangroves and seagrass beds for coral-reef fish? The nursery hypothesis tested on an island scale. Marine Ecology Progress Series 244: 299-305. Newman SJ, Williams D.McB, Russ GR (1996) Age validation, growth, and mortality rates of the tropical snappers (Pisces: Lutjanidae) Lutjanus adetii (Castelnau, 1873) and L. quinquelineatus (Bloch, 1790) from the central Great Barrier Reef. Fishery Bulletin 94:313-329. NMFS-SEFC-261, 1-40. Polunin NVC (2002) Marine protected areas, fish and fisheries. In: Hart PJB, Reynolds JC (eds) Handbook of Fish and Fisheries, Volume II, Blackwell, Oxford. pp: 293-318 Polunin, N. V. C. (1990). Marine regulated areas: an expanded approach for the tropics. Res. Manage. Optim., 7, 283-99. Rowley, R. J. (1994). Marine reserves in fisheries management. Aquat. Conserv., 4, 233-54. Russ GR (2002) Yet another review of marine reserves as reef fisheries management tools. In: Sale PF (ed) Coral Reef Fishes: Dynamics and Diversity in a Complex Ecosystem, Academic Press, San Diego. pp: 421-443 Russ GR, Alcala AC. Management histories of Sumilon and Apo Marine Reserves, Philippines, and their influence on National Marine Resource Policy. Coral Reefs 1999;18:307-19. Saim, R. V. Kenchington, R. A. (1984). The need for management. In Coral reef management handbook, ed. R. A. Kenchington B. E. T. Hudson. UNESCO, Jakarta, pp. 9-13. Saim, R. V. Kenchington, R. A. (1984). The need for management. In Coral reef management handbook, ed. R. A. Kenchington B. E. T. Hudson. UNESCO, Jakarta, pp. 9-13. Smith, S. V. (1978). Coral-reef area and the contributions of reef processes and resources to the worlds oceans. Nature Lond., 273, 225-6. Smith, S. V. (1978). Coral-reef area and the contributions of reef processes and resources to the worlds oceans. Nature Lond., 273, 225-6. Spalding MD, Ravilious C, Green EP. World atlas of coral reefs. Berkeley, California: University of California Press; 2001. Steven M. Thur(2008), User fees as sustainablefinancing mechanisms for marine protected areas: An application to the Bonaire National Marine Park; Marine Policy, Vol. 34, Issue 1, Jan10, pp 63-69. Williams ID, Polunin NVC (2000) Differences between protected and unprotected reefs of the western Caribbean in attributes preferred by dive tourists. Environmental Conservation 27: 382-391. Roberts, C.M. 2000. Biophysical Design of Marine Protected Areas. Paper presented at the 9th International Coral Reef Symposium, October 23-27, 2000, Bali, Indonesia. Reefs at Risk: A Map-Based Indicator of Threats to the Worlds Coral Reefs

Doubting Religion in Wallace Stevens Sunday Morning Essay -- Poem Poe

Doubting Religion in Wallace Stevens' Sunday Morning Voice is an integral part of Wallace Stevens' "Sunday Morning." The voice of the poem is not the woman's, but that of an outside narrator who seems to give words to the feelings that the woman experiences. The dramatic situation is created during the first stanza. The woman, still in her peignoir, is taking "late coffee and oranges in a sunny chair" on a bright Sunday morning instead of attending church. The quiet of the scene is evident, and the "holy hush" provides the woman with the perfect environment for introspection. The poetic problem arises when the woman, in her liminal state of mind, is troubled with conflicting emotions about life, death, and Christianity. The first thought that encroaches upon the woman's daydreams and darkens the atmosphere is that of a solemn "procession of the dead" to Palestine. Her interaction with the procession is interesting because it symbolizes the journey she is making in her mind and sets the tone for later religious questioning in the poem. The second stanza begins with a series of rhetorical questions that express the woman's inner struggle. The second question is her response to the dark encroachment of the procession, and the third question answers the previous two. The randomness of this questioning illustrates the disorganized nature of her thinking, and an answer finally surfaces when she decides that "divinity must live within herself." A list of positive and negative emotions that she has experienced as a result of nature provides further explanation of the divinity she hopes she possesses within. The realization that these emotions "are the measures destined for her soul" ends the stanza with a feeling of hopefulness. Reli... ...ained in the seventh when Stevens depicts pre-Christian ideals such as the ancient worship of the sun as a god. Here, the blood of the turbulent, chanting men leaves them and returns to the sky in a process similar to the commingling human blood with the blood of heaven in the third stanza A few other philosophical observations result from this stanza, including the suggestion that Gods are humanly created and the idea that men are a part of nature. The last stanza of "Sunday Morning" reiterates the feeling of solitude that the woman experiences in the first stanza, but the tone has changed. The image of silent water again dominates the scene, and her religious questioning continues. She is still suspended in a disorganized state of mind, but there is a feeling of acceptance of the ambiguity of life that is not replaced with the peace of mind and hopes of happiness.

Analysis of Emma Lazarus’ The New Colossus

Analysis of Emma Lazarus' Statue of Liberty Poem X Maxwell Wallace Maxwell Wallace has been a professional freelance copywriter since 1999. His work has appeared in numerous print and online publications. An avid surfer, Wallace enjoys writing about travel and outdoor activities throughout the world. He holds a Bachelor of Science in communication and journalism from Suffolk University, Boston. â€Å"The New Colossus† is a sonnet by the late American poet, Emma Lazarus (1849-1887). . Significance * In 1903, â€Å"The New Colossus† achieved exceptional notoriety and perdurable fame when the last four lines of the piece were engraved on a large bronze plaque underneath the Statue of Liberty, located on Ellis Island in New York, New York. About the Author * Considered by her contemporaries as a dignitary of American letters, Emma Lazarus was one of the first successful Jewish-American authors in history. The New Colossus† exemplifies many common themes found in her c atalog of work, most notably sympathy for emigrants seeking exile from harsh regimes and those who enduring prejudice — both of which were commonplace during her lifetime. History * Construction on the Statue of Liberty was completed in 1886, however the pedestal of the statue remained unfinished for some time. Lazarus wrote the piece in conjunction with a movement by a group of New York artists and writers who were trying to raise money for the pedestal's completion. Considerations * The poem describes the millions of immigrants who had already passed through Ellis Island, as well as lauding those who had yet to make the journey. Significance * The images of freedom and redemption in â€Å"The New Colossus† only further solidified the feelings of hope and rebirth experienced by immigrants who passed through Ellis Island

Aggressive Behavior In Young People Young People Essay Essay Example

Aggressive Behavior In Young People Young People Essay Essay Example Aggressive Behavior In Young People Young People Essay Essay Aggressive Behavior In Young People Young People Essay Essay The addition in violent behaviour in the American society particularly amongst adolescents has triggered research on causes of force. There has been a important addition in aberrant behaviour particularly among the immature people and this has included instances of school violent deaths, armed offenses, sexual offenses and other signifiers of condemnable behaviour. This tendency has caused concern to defenders, parents and the society in general. Research on force in immature people has pointed to the media as a major subscriber to force. Different researches have shown that kids who are exposed to force in the media at a immature age are more likely to show violent actions than those who are non exposed to it. Research has besides shown that prevailing exposure of force to kids takes topographic point through the telecasting. These researches have concluded that kids who watch the telecasting for a longer period of clip are likely to show aggressive behaviour and develop violent ten dencies later in life. However, it is of import to re-evaluate this issue and develop clear findings on the relationship between watching the telecasting and development of aggressive behaviour among kids. This can be achieved through analysing literature and research on the topic by bookmans. This paper aims at analysing the relationship between watching telecasting and development of aggressive behaviour by kids. This analysis will be done utilizing the annotated bibliography format. Three articles of a scholarly literature will be evaluated to develop accurate research findings. These articles are Television force: A reappraisal of the effects on kids of different ages by the Media Awareness Network, Violence in society by Anderson and How the Television affects your kid by Kid s Health Organization. The discussed issues will be summarized at the terminal. Statement of hypothesis The statement of hypothesis will specify the purposes of the research. The statement of hypothesis will be Do kids who watch telecasting more than three hours a twenty-four hours exhibit more aggressive behaviour than those who watch fewer than three hours a twenty-four hours? Research inquiries There will be other research inquiries which will take at understanding aggression among kids and observation of the telecasting for longer hours. One of the research inquiries will be What is the association of aggressive behaviour in kids and violent media? Another research inquiry will be What can be done to deter aggression amongst kids . Article 1: Media Awareness Network. ( 2009 ) . Television force: A reappraisal of the effects on kids of different ages. Introduction Many surveies have explained the causes of development of aggression among kids and adolescents who are exposed to force or grownup content by the media. Research workers from the Media Awareness Network assess the impacts which telecasting plans have on kids of different ages. They analyze a measure by measure influence on aggression and force amongst kids of different ages as a consequence of being exposed to the telecasting. They farther explain that kids are normally unable to hold on the content or narrative behind a film or plan, and their attending is normally captured by dramatic scenes or scenes which they are familiar with. When this happens, such kids begin copying the behaviour particularly when it is presented in an unlittered, instructional and simple mode. Literature reappraisal and findings When kids are about two old ages of age, they begin paying attending to telecasting plans. The screening form developed during this age is likely to be carried frontward to adulthood. During this phase, kids prefer watching sketchs and plans which have fast traveling characters that capture their involvement. During pre-school age, they enter the exploratory phase where they try to decode intending from content they are exposed to. In this phase, they are attracted to production characteristics which are vivid and which include rapid changing of scenes, rapid motion of characters and unexpected or intense sounds and sights ( Media Awareness Network, 2009 ) . Most instances of force in the telecasting plans are followed by production characteristics which are graphic and this means that kids pay attending and seek out violent scenes. It is of import to observe that kids are non attracted to violent Acts of the Apostless in the media but instead the vivid characteristics of production which accompany such scenes. Although telecasting content may subsequently explicate the effects and motive behind the force, kids are unable to hold on these of import facets due to their low adulthood degrees. They are likely to copy violent Acts of the Apostless and act sharply without consciousness of effects of such actions. During the simple school ages, kids have the ability to do illations and follow secret plans every bit good as understand effects and motives attached to the actions of histrions. However, their mental development is non to the full developed and it is non possible to find whether they will deeply treat the information from the telecasting or simply react in a superficial or unfocused manner. By eight old ages of age, kids will probably develop aggression if they identify themselves with violent heroes. However, if force is depicted as immorality, through penalty or doing enduring, such kids are improbable to copy it. By the clip they are about ten old ages of age, kids begin besides watching family-oriented or grownup content and may develop a similitude for films which employ force. During adolescence, kids have high abstract logical thinking and idea degrees and they use this for academic work as opposed to watching the telecasting. However, they become independent and may get down watching horror, adult or violent films every bit good as music picture. These have a negative consequence on striplings and unless they are decently guided by grownups, they may prosecute in violent or immoral Acts of the Apostless. However, merely the minor proportion which believes in the power of telecasting and identifies with violent heroes is likely to pattern violent Acts of the Apostless against their equals. This position is supported by messages which plans which have high grades of force advertise. Programs such as World Wrestling expose kids to high degrees of force and manufacturers have acknowledged the effects which this exposure may hold on them. As a consequence, such plans carry messages which warn kids and immature people non to reiterate actions they see during t he plan as the histrions are professionally trained performing artists who have practiced for many old ages. Methodology However, the writers use secondary research as opposed to primary research as a footing for developing their findings. A assortment of diaries and books are used for the research. It is of import to understand the failings and strengths of this research methodological analysis. Failings of secondary research include the possibility of doubling mistakes from paperss used and the inability to research research further through existent question of authors of the research. This arises from the fact that research workers are non physically present to reply any inquiries which may originate from their research. Advantages of this research method include the low cost and easiness of set abouting research from the cyberspace. The ability to confirm information from diverse beginnings on the Internet is besides another benefit of utilizing this method. Significance of findings The findings of this article are really utile to parents and defenders in general. The research paper helps parents and defenders to understand the idea procedure which kids and adolescents experience when they are exposed to the telecasting. This enables them have an penetration of the effects that force on the telecasting has on kids of different ages. This is of import when parents want to screen their kids from force. The article besides discusses assorted ways in which parents may protect their kids from force and these will be discussed at the terminal of the paper. Article 2: Anderson, K. ( 2008 ) . Violence in society Introduction This writer links the addition in force in society with the exposure of kids to violence through the telecasting. The writer begins by giving several statistics on force or aggression exposures to kids. The first research shows that over 50 % of kids were afraid of force against their households, which showed the paranoia among kids. Extra statistics show that about 20 % of adolescents in the US between the ages of 10 and 17 are cognizant of a individual who has been shot ( Anderson, 2008 ) . Within the last two decennaries, the proportion of child maltreatment increased by over 40 % . Violent offense on the other manus has increased by 60 % within the last four decennaries. Literature reappraisal and findings The writer so links the force in society to exposure to force through the telecasting particularly among kids. Statisticss used to associate these two phenomena explain that kids in the US reveal that an mean kid is exposed to 100,000 Acts of the Apostless of force and 8,000 televised slayings before completion of simple school. This figure doubles before they reach maturity. In add-on, adolescents watch over 10,000 hours of stone music on MTV, and this exposes them to a assortment of violent or immoral Acts of the Apostless. Research on 732 kids straight linked exposure to force on telecasting to delinquent behaviour by kids and this ranged from contending to struggles with parents. These Acts of the Apostless correlated with exposure to telecasting screening. Another longer term research by the University of Illinois made findings that telecasting wonts at a stamp age straight influenced aggressive behaviour at ulterior ages. This means that the more exposure to violence that a kid has, the more they are likely to be violent in ulterior life. Methodology The writer uses a combination of secondary and primary beginnings when carry oning research. Benefits of primary research include the ability to seek accounts on ill-defined issues straight from the writers of research. Another advantage is that organic structure linguistic communication may be used to do decisions through non-verbal communicating. Disadvantages include the fact that it is expensive to transport out. Another failing is that there may be interviewer or interviewee bias depending on the accomplishments of the interviewer. The failings and strengths of secondary beginnings were earlier discussed. Significance of findings The findings of this research are really of import to parents, instructors, defenders and the society at big. These findings show clear linkage between exposure to force on the telecasting to kids and the development of aggressive behaviour. Such grounds from research reinforces the position that kids should be protected from violent content when they are turning up and this is the duty of the society as a whole. Various methods which can be used to accomplish this aim will be discussed at the terminal of the paper. Article 3: Kid s Health Organization. ( 2010 ) . How the Television affects your kid Introduction The writers begin by giving facts about the mean clip spent by kids watching the telecasting. They explain that the mean kid under six old ages of age spends two hours daily watching telecasting, DVDs or pictures. Adolescents and kids who are aged between eight and 18 old ages of age spend four hours and two hours on the telecasting and computing machine severally. The American Pediatrics Association recommends kids under two old ages of age non to watch telecasting at all, and those over two old ages non to watch more than two hours of telecasting daily. This is because the first and 2nd twelvemonth after childbearing is indispensable for mental development and electronic devices should non impact playing, geographic expedition and interaction of kids with people around them. Literature reappraisal and findings The writers explain that telecasting is utile to kids if watched in moderateness since it exposes them to larning and researching new things. However, inordinate observation of the telecasting by kids has been linked to inauspicious effects such as being fleshy, development of fright and aggression every bit good as acceptance of hazardous behaviour such as usage of drugs. They explain that the mean kid will watch 200,000 violent Acts of the Apostless before they attain maturity ( Kid s Health Organization, 2010 ) . Such kids may copy violent Acts of the Apostless which they view as merriment. Since the good cat normally propagates force against scoundrels, kids view force every bit positive every bit long as it is directed towards the bad cat . In add-on, many plans feature hazardous behaviours such as imbibing, smoke and engaging in sexual Acts of the Apostless. Children may copy this behaviour in a command to look cool to their equals. Research has shown that kids who watch more than five hours of telecasting a twenty-four hours are more likely to take part in sexual Acts of the Apostless, imbibing intoxicant or smoke compared to those who watch telecasting for two hours or less. Methodology The writers likewise used a combination of secondary and primary beginnings when set abouting the research. These beginnings have failings and strengths which have already been discussed in the paper. Significance of findings The findings of this research are really utile since they straight link the figure of hours which kids watch telecasting to the development of aggression and other delinquent behaviours. The American Pediatric Association has recommended that kids watch telecasting for a upper limit of two hours a twenty-four hours, and those aged less than two old ages should non be exposed to the telecasting. This information is of import to parents who are acute to guarantee that their kids have equal mental development and are free from force or immorality which is exposed by the media. Summary and decision The paper has discussed three articles which assess the relationship between development of aggression by kids as a consequence of exposure to the telecasting. All the articles have linked kids s aggression and development of immoral behaviour to exposure to the media. Childs have been seen to copy what they see on the telecasting without equal cognition of the reverberations of such actions. The sum of clip which is spent watching such plans has besides been seen to be straight relative to the aggression developed by kids and adolescents. Children under two old ages of age should non be exposed to the telecasting harmonizing to the American Pediatric Association, and those over two old ages should merely hold two hours of telecasting screening. After the appraisal of these findings, it is clear that the reply to the hypothesis What is the association of aggressive behaviour in kids and violent media? is an addition in instances of aggression and immoral behaviour among kids who are exposed to violent media. This has been supported by research discussed. In order to reply the research inquiry What can be done to deter aggression amongst kids , the undermentioned steps should be taken by parents, instructors an society at big. In order to deter aggressive behaviour among kids, parents and defenders have a duty to command the plans their kids watch or the media they are exposed to. Parents should guarantee that kids are non exposed to violent or immoral behaviour since this may promote them to copy such behaviour. In order to command what kids are exposed to, movie shapers and media houses have a duty to rate the content which is exposed to audiences. This is normally a demand in many societies across the universe, and the media is expected to warn viewing audiences in progress if the content has rough linguistic communication, nakedness, force or scenes of a sexual nature. Once parents are cognizant of the content of plans beforehand, they are able to command what their kids have entree to. This will cut down the degrees of aggression among kids and adolescents in the American society, and the degrees of violent offenses will cut down in the long tally.

brassica rapa essays

brassica rapa essays The Effect of Exogenously Applied Gibberellic Acid on the Plant Type Brassica rapa in a Regulated Environment. The purpose of this experiment was to determine whether the exogenous application of the plant hormone Gibberellic Acid (GA) will increase the growth rate of a Rosette mutant Brassica rapa. A wild type plant was compared to six rosette mutant plants, which have a recessive mutation that prevents the production of Gibberellins, natural plant growth hormones. Gibberellic Acid was applied to six of the plant cells in concentrations of 0, 1, 100, 1000, 10,000, and unknown uM. We compared the height and growth of each plant cell to the control, the 0 uM mutant plant, which represented an unaffected Rosette mutant. Five different measurements of the growth in height of each of the plants were taken over the three week course of the experiment. The data and results analyzed from the experiment helped determine which concentration of Gibberellic Acid has the most effect in the growth response of the Rosette mutants and what the unknown concentration the  ¡unknown ¡ Rosette mutant pl ant was receiving. James Matthew Warner Dishuck and I had the alternate hypothesis that an increase in the concentration of Gibberellic Acid applied exogenously to the Rosettes would result in an increase in plant growth. Our results from our experiment showed that the 1,000 uM and 10,000 uM enhanced Rosette mutants had significant changes in their growth response and height increase through out the experiment, which disproved the null hypothesis that GA enhanced Rosette mutant plants would have a plant growth equal to a Rosette mutant plant unaffected by the plant growth hormone. Gibberellic Acid has a positive effect on the Gibberellins-lacking Rosette mutant Brassica rapa , but after a certain concentration of GA, the plant growth hormone would have a possible negative effect on the Brassica rapa. Brassica rapa is a diminutive plant dev...

Funny Christmas Party Themes

Funny Christmas Party Themes Whether youre planning an evening with the family, or a rambunctious party with your friends, your Ð ¡hristmas get-together will need a theme. And why settle for something boring like Ð ¡hristmas movie night when you can do something completely unique and something that anyone, regardless of age, will enjoy? Lets jump into this list of funny Ð ¡hristmas party themes. Favorite Christmas Song Karaoke Night Now is the best time to start rehearsing those Christmas hits everyone loves for one month out of the year. Everyone loves karaoke, and the kitschy ambiance will make the right guests scream (into the microphone) with glee. Either rent out a space, or, for smaller groups, rent out a karaoke machine to hook up to the TV in your living room. Is this way to spend Christmas seem a bit weird to you? Its because you havent read about other unusual things people do on Christmas. Ugly Sweater Party If you dont own at least one chunky, uneven sweater made by a relative you barely know, youre either lying or just went through your clothes and donated a bunch. Either way, everyone loves an ugly sweater, and an occasion to celebrate our weird love for weirdly-colored holiday-themed garb would be welcome by anyone. Gift Randomizer Its like Secret Santa, except the secret is that no one knows who the gift is for. Tell your guests about the randomizer, set the amount guests are allowed to spend on the gift (over $20 and under $50 is a good range), and expect hilarity. When they arrive, drop everyones names into a hat, and randomize away! It might be more fun to not tell your guests upfront about the randomizer, but expect some sour faces if you decide to do that. It can be hard to buy a gift for someone you dont know well, hope these Christmas gifts ideas will help you. Beach-Themed Christmas Around this time of year, cold temperatures reach the level theyre going to be for the next few months, and everyone starts missing the summer months. Throw a reverse Christmas in July with beach cocktails, beach chairs, and a summer attitude. You can host the party at a location with an indoor pool to give everyone that summer feel. Christmas Movie Marathon Everyone has a Christmas movie from childhood that they love. Movies, after all, is how we fell in love with Christmas, how we mark its arrival on our calendars, and how we feel the magic of the holidays. Ask all your prospective guests what their favorite Christmas movies from childhood are, consolidate them into a top five, and make a playlist! If you get that urge to be a great host around the holidays, you can create decorations for your party based on the Christmas movies youre watching. Gingerbread House Decorator-off Is there anyone who doesnt like decorating gingerbread houses? If you answered yes, dont invite these people to your awesome decorator-off. Buy some pre-made gingerbread houses, separate your guests into groups, and may the most creative gingerbread house win! If your groups turn out to be large, set up a few elements that are mandatory to create, like a Christmas tree, a gingerbread man or a snowman. If you need some inspiration for creating an unusual Christmas tree, you should check out our blog about the weirdest Christmas trees. Decoration-Making Party If your Christmas party is not on the 25th, you can make use of the date and have everyone create fantastic DIY decorations for their homes! Find a few guides online for wreaths, faux Christmas trees, and anything else you can find for your guests to make. Try them out for yourself, and pick out the best ones. Youll effectively be hosting the party and guiding everyone youve invited through the process, so make sure you know what youre doing before you decide on this idea. Did you know that some people celebrate Christmas on the 7th of January? If you dont know why, you should read about this fact and other interesting facts about Christmas right away. Youll be surprised with some of them! And there you have it! Eight fantastic ideas that would make Martha Stewart blush. Take one or a few of these themes, and be the best host or hostess you can be this holidays season. With this list, you are sure to impress anyone. If you have any other awesome Christmas party ideas you are welcome to leave the comments!

Japan 2 Assignment Example | Topics and Well Written Essays - 250 words

Japan 2 - Assignment Example educational achievements equally competitive to another student’s academic qualifications but from a different school or a different part of the country (Jospeph, Holger, Lawrence 136). My profile is very much similar to another student’s profile in another part of the country. This is because the education system is very much similar countrywide. There are no long holiday break for schools in UAE and thus this helps all students to retain what has been learnt in school over a long period of time. Japan’s educational system is very much similar to that of the United Arab Emirates. The education system is modeled by the government to cover schools across the country. Also the schools focus on building the extracurricular lives of their students by engaging them in extracurricular activities often. The difference in education systems is that Japanese students spend more time in the classroom as compared to an ordinary student in UAE (Yasuhiro

Aspergers Essay Example | Topics and Well Written Essays - 750 words

Aspergers - Essay Example Even though traits and symptoms of Asperger’s may improve over time, Asperger’s is a lifelong condition. Sufferers of Asperger’s can improve their social skills over a long period of time and treatment, but they will always have the disorder. Causes There is no specific known cause of Asperger’s syndrome, though it is known that the organ affected the most is the brain. Since the disorder seems to run in families, where more than child is often diagnosed, scientists and doctors alike believe that the disorder is caused by something involving certain hereditary genes. It is also believed that changes in the structure or the development of the brain, as well as changes to specific genes, can be linked to someone developing the disorder. There is also the assumption that Asperger’s syndrome can be brought on by other mental health disorders, like depression and bipolar disorder; this disorders are thought to be able to trigger the development of Asperg er’s. Contrary to popular belief, Asperger’s is not caused by someone being deprived emotionally. Since many people with Asperger’s appear rude towards others, given their inability to properly respond in public, people have come to the conclusion that Asperger’s can develop due to bad parenting or bad experiences in the childhood. This is incorrect. Though there is very little known about how the disorder is caused, it is known for certain that Asperger’s syndrome is a neurobiological disorder that can have negative effects on the lives of those diagnosed with the disorder if treatment is not sought. Symptoms The most common sign associated with Asperger’s is the inability of the individual to properly acknowledge the existence of others, even if they are having direct contact with them. Someone who has been diagnosed with Asperger’s syndrome tends to become involved in long, one-sided conversations without taking notice as to whethe r or not the other person is listening or attempting to change the subject. Their nonverbal communication is unusual, such as not making eye contact or displaying bizarre body posture, facial expressions, or poor coordination. An individual with Asperger’s does not attempt to understand or sympathize with the feelings of others, and they have a hard time in understanding humor. Yet another symptom of a person with Asperger’s is their intense, though severely narrowed, interest in only a few specific complex topics, which can lead to a level of near-obsession. An individual might be able to name all of the stars in the sky or speak of the patterns of music, or they might be able to draw detailed portraits or learn a song on piano simply by listening to it once. Though it is not entirely known as to why people who have Asperger’s have these especially abilities, it is believed to be related to the fact that since the person is unable to be properly social and comm unicative with others, they channel that excess energy into a specific interest (Attwood 177). Treatment Options Since scientists and doctors are unable to find a definite cause for Asperger’s syndrome, there is also no cure for the disorder. If someone is diagnosed with Asperger’s as a child, they will still have Asperger’s as an adult. However, as previously mentioned, individuals are able to improve their social skills through a variety of therapies, specialized interventions, and medications.

Case study Essay Example | Topics and Well Written Essays - 250 words - 50

Case study - Essay Example Above all, FAA is mandated to oversee the operations of USA air carriers even outside USA territory. The essence for this is to ensure the service level expected to be offered by USA airline companies is maintained to attract as many as possible passengers and to choose USA airline companies as the best at all times. Taking for instance being an airport manager for Los Angeles International Airport, the magnitude of task and flow of planes in and out of an airport is massive. The manager has a responsibility of ensuring the operations within the airport runs smoothly and improves continuously. Government funding to enhance the facilities in airports, cannot be sufficient, therefore, the manager should move out of the norm to look for other sources of that are reliable. Passengers can be charged for using the airport facilities, leasing space for investors to open up businesses and charging of planes for using the airport facilities will generate income. However, the charging should be logical as far as costing and returns are concerned or else it will scare away possible investor (Wells, 2000). From these sources, the manager can invest on technologies that will minimize level of sound pollution caused by planes jetting in and out of the Case study Essay Example | Topics and Well Written Essays - 750 words - 17 Case study - Essay Example One of the greatest leaders known is Nelson Mandela, a former South African President who oversaw his country gain independence after going through a difficult racial segregation period. Nelson Mandela had a wide range of leadership traits that earned him global admiration and which were also instrumental in ascertaining the success of his leadership. Among key traits that Mandela displayed in his leadership, which also have a theoretical foundation include reconciliation, self-esteem, and humility. Reconciliation formed a large part of Mandela’s leadership ideology. In the Video clip, Mandela can be seen to display the reconciliation trait by offering white members of his cabinet a chance to serve in his government. This was deemed impossible and from their body language during that first cabinet meeting, the white leaders who had spearheaded the racial apartheid movement had feared for the worst and were looking forward to being sacked from public service. Mandela on the other hand chose to forgive them and work with them for the benefit of the country. With regard to self-esteem, Mandela was very instrumental in giving his followers the belief that they were not inferior to the white who had created a notion that blacks were inferior citizens. This self-esteem is shown several times in the video clip when Mandela decides to work at par with both whites and blacks to demonstrate that no race was superior to the other. His treatment of the Rugby team, which was predominantly white, indicated his belief that all people are equal. Humility is also displayed on several instances in the movie clip and in deed in Mandela’s life and leadership. He always mixed with common citizens and other junior leaders listening to them and giving them advice. When he mingled freely with the rugby team captain sharing leadership experiences as if they are at par,

My business part 2 Research Paper Example | Topics and Well Written Essays - 1250 words

My business part 2 - Research Paper Example A business should also plan its overall capacity in order to avoid instances of over or under production. This will ensure that it produces an amount that exactly satisfies the customers’ demands. Statistics employed to measure the quality characteristic in the business Quality in the business is majorly measured by the performance of the business (Venkatraman & Ramanujam, 805). A business is said to have a high quality characteristic when it attracts a large number of customers as compared to its competitors. This is because when the business attracts a large number of customers, then it will imply that the print business is offering quality services. On the other hand, quality of operations will also be determined by the usage of resources and materials. When materials are not economically managed, then the quality characteristic of the business will be assessed as poor (Venkatraman & Ramanujam, 810). Materials need to be handled carefully in order to reduce the costs of ope ration while maximizing the benefits. Effective communication also determines the quality characteristic of the business. This is because when the employees and the management communicate effectively, then it will imply that the flow of work in my print business will be effective too (Naidu, Babu & Rajendra, 30). ... In my print business, one of the key concepts that I will need to address in order to ensure effective capacity is the human factor. Employees need to be well trained, highly skilled and well experienced in order to ensure that they perform their jobs effectively to meet the potential output. Operational factors are also concepts that will determine the effective capacity of the firm (Stevenson, 19). This will involve factors such as inventory management, scheduling of activities, and meeting purchasing requirements effectively. These are factors that will ensure that the firm does not hold excess stocks in the business. This is because; excess stocks result from poor capacity planning and normally lead to excess capacity (Stevenson, 20). Facility factors such as location factors also affect the business considerably. Therefore, when choosing the location of my print business i will have to consider the transport costs. If the area is far from the market, then it will imply that the transport costs will be very high and delivery might delay at times thus, affecting the capacity planning of the business. In addition, I will also consider the labour supply in the area, and effective supply of resources such as water and electricity. Aggregate plan to maintain a competitive advantage To maintain a competitive advantage in the market, the business will have to market its products and services effectively in order to increase awareness and attract more customers. Secondly, the plan will involve proper determination of the prices to be charged. This is because; the business will only be highly competitive when its prices are more competitive compared to the market prices (Naidu,

Woodrow Wilson's speech Final Address in Support of the League of Term Paper

Woodrow Wilson's speech Final Address in Support of the League of Nations - Term Paper Example The paper presents a critical analysis of Woodrow Wilson’s speech as a persuasive discourse necessitates an in-depth understanding of the various aspects of a persuasive speech. Persuasive speeches are governed by both communicative intentions and persuasive intentions and the ultimate goal of such a discourse is to exert favorable responses in the minds of the audience. Any persuasive speech aims at â€Å"influencing values, ideas, beliefs and attitudes of the audience† and as such persuasive speeches try â€Å"to convince people to come a different idea, attitude and belief, react to something, consider doing things they were previously unwilling to do.† All throughout the speech Woodrow Wilson’s attempts to persuade a target audience are clearly evident. He repeatedly addresses the audience as â€Å"fellow countrymen† and â€Å"my fellow citizens.† In the very beginning of the speech itself he tries to make a rapport with the audience by e xplicitly stating that they are not far from him. Towards the second paragraph of his speech Woodrow Wilson introduces the issue of League of Nations by emphasizing that there are ‘organized propaganda against the League of Nations’ and that there are men who â€Å"have been busy creating an absolutely false impression of what the treaty of peace and the Covenant of the League of Nations contain and mean.† He goes on to purport that it is people who are sympathetic towards certain bodies of foreign nations who protest against the treaty. Wilson also takes conscious efforts to adapt the content of the speech to the ideas, attitudes and values of the audience. He was quite aware that many of the senators and the Americans regarded the treaty as a mere settlement with Germany. He purports: â€Å"It is not merely a settlement with Germany; it is a readjustment of those great injustices which underlie the whole structure of European and Asiatic society.†4 He al so argues that the treaty is the people’s treaty and that there are several treaties to follow the same line as that of League of Nations. Historical evidences show that Woodrow Wilson toured the whole nation in order to turn the American public opinion in favor of the League of Nations. He paid great value to the settlements agreed at the Paris Peace Conference and it was a very difficult task for him to convince the U.S. Congress and get their approval for the treaty of League of Nati

Personal Essay Example | Topics and Well Written Essays - 500 words - 7

Personal - Essay Example   While my undergraduate course had been indispensable in carrying out the duties of my current job, I still felt the need to explore more on the studies of public administration to expand my knowledge and skills in public service which explains why I would like to pursue a post graduate degree in Public Administration with the Emphasis in Disaster Preparedness and Executive Fire Leadership as my first choice of academic program and Emphasis in Government and Policy as my secondary program of interest.   Both programs in Master in Public Administration deal with the advance levels of policy formulation, leadership and administrative preparedness in a public service context which explains why it interests me to explore through a formal study. I prefer to pursue post graduate academic training in Master in Public Administration with an Emphasis in Disaster Preparedness and Executive Fire Leadership University in Troy State University not only because of its excellent program and esteemed academic reputation, but also because of its holistic development program and the special emphasis it put on diversity. As a potential student in Master in Public Administration, I believe that I will tremendously benefit with this unique mix of academic training as well as having cultural and professional exposure because it will complement my academic education with cultural education. I believe that exposure to different nationality and profession is equally important especially in government because we are dealing with all kinds of people with different cultural background. I have a high regard of the academic standard of a post graduate study at Troy State University but I believe that my undergraduate study at University of Southern California had prepared me to undertake such academic rigor to be able to one of its exemplary students. I am a quick study albeit I also suffer the weakness of procrastination which is commonly shared by many

Security and Integrity of health care information systems Term Paper

Security and Integrity of health care information systems - Term Paper Example Unfortunately, maintaining security and integrity of the information systems and applications is still a challenge to many hospitals and associated organizations that handle patients’ records, even after changeover to electronic storage and operations. In the healthcare industry, different stakeholders such hospitals, governments, insurance companies, pharmaceutical agencies, and the patients have various privileges to the electronic records where necessary, in order to accomplish their duties. Access to the HIS, information exchange, and disclosure of confidential data becomes prone to attack from multiple threats. This paper discusses change in the field of nursing, the use, security, and integrity of health information systems, potential threats to the HIS and EPR as identified in various researches, and their effects. It also discusses some measures to insecurity and poor integrity of health information systems. Keywords: Nursing Informatics, Healthcare Information System, Change Theory, Electronic Patient Record, Medical Identity Theft, Threats, Vulnerabilities, HIPAA, HITECH, Information Exchange, Frauds, Security, Integrity, Privacy, Confidentiality, Authorization, Authentication, Technical And Administrative Safeguards, Information Flow, Audit Logs, Healthcare Organizations, Medical Records, Business Associates, Patients, Stakeholders 1. Introduction With the changes taking place around the globe and especially changes in technology â€Å"informatics is no longer an option for nurses and other health care providers. It is a requirement† (Ball, DuLong &Hannah, 2011, p. 5). The use of computerized information systems in healthcare has undoubtedly increased the efficiency of medical record keeping, but contributed to the risk of security exposure. Sensitive personal and medical information on patients that requires privacy, risks being compromised incase of security breaches on the healthcare information systems. Protecting the healthcare inf ormation systems and data is therefore an important factor in improving healthcare quality. The increasing need for information sharing between the healthcare stakeholders (patients, providers, and payers) and the modern digital trend in record keeping create a need for better security of information. Whenever insecurity of IS exists, unauthorized access, dissemination of information, and operations on data and systems can occur, whose effect could not only affect the patients, but the healthcare providers and physicians decisions. Medical identity theft is one of the major frauds in cases of IS insecurity. Although the EHR pose various benefits to the patients, such that they can routinely review their health records electronically, it’s a fact that numerous people can view the EHR simultaneously. The systems is built on a number of compatible information technology tools, whose corruption or hacking is a lead to healthcare IS breaches. Patients’ information can be st olen for personal gains, or falsified for wrong diagnosis among other effects. Security, privacy, confidentiality, data availability, and integrity are the ethical priorities in EHR. Medical identity theft and other breaches can be detected and prevented under various procedures to secure healthcare information and IS against fraud. Several laws have been enacted and continue to be implemented ways to enforce security in healthcare IS and their content. The HITECH Act and HIPAA security rules are various government legislations that assist in

Personal Essay Example | Topics and Well Written Essays - 500 words - 7

Personal - Essay Example   While my undergraduate course had been indispensable in carrying out the duties of my current job, I still felt the need to explore more on the studies of public administration to expand my knowledge and skills in public service which explains why I would like to pursue a post graduate degree in Public Administration with the Emphasis in Disaster Preparedness and Executive Fire Leadership as my first choice of academic program and Emphasis in Government and Policy as my secondary program of interest.   Both programs in Master in Public Administration deal with the advance levels of policy formulation, leadership and administrative preparedness in a public service context which explains why it interests me to explore through a formal study. I prefer to pursue post graduate academic training in Master in Public Administration with an Emphasis in Disaster Preparedness and Executive Fire Leadership University in Troy State University not only because of its excellent program and esteemed academic reputation, but also because of its holistic development program and the special emphasis it put on diversity. As a potential student in Master in Public Administration, I believe that I will tremendously benefit with this unique mix of academic training as well as having cultural and professional exposure because it will complement my academic education with cultural education. I believe that exposure to different nationality and profession is equally important especially in government because we are dealing with all kinds of people with different cultural background. I have a high regard of the academic standard of a post graduate study at Troy State University but I believe that my undergraduate study at University of Southern California had prepared me to undertake such academic rigor to be able to one of its exemplary students. I am a quick study albeit I also suffer the weakness of procrastination which is commonly shared by many

ICT Notes Case Essay Example for Free

ICT Notes Case Essay Whenever personal details or other private information is stored about people, it is regulated by the data Protection Act and organisations storing such information must register with the data protection bureau. It gives rights to data subjects (i.e. in this case the patients who have specific data about themselves stored on the health centre system). Data is subject to 8 main regulations to protect the rights and privacy of individuals. These are: 1. Personal data shall be processed fairly and lawfully. 2. Personal data shall be obtained only for one or more specified and lawful purposes. see more:annual function speech 3. Personal data shall be adequate, relevant and not excessive in relation to the purpose for which it is used. 4. Personal data shall be accurate and, where necessary, kept up to date. 5. Personal data shall not be kept for longer than is necessary for the specified purpose. 6. Personal data shall be processed in accordance with the rights of data subjects under the act (patients have the right to view and correct information held, except in cases of crime or certain government agencies). 7. Data holders should have appropriate measures in place to protect the data against loss, theft or corruption. 8. Personal data shall not be transferred to a country outside the EEC unless that country ensures an adequate level of protection for the rights of data subjects. Computer Misuse Act 1990 This law was introduced to cope with the problems of computer hackers and viruses. The Act was introduced to recognise these three offences: 1. Unauthorised access to computer material If a member of the health centre staff uses another staff members password to log onto their user area, this is illegal. Even if they dont change, delete or damage anything, they are still guilty of accessing materials without authorisation and this is illegal. 2. Unauthorised access with intent to commit or facilitate a crime The difference between this and the first offence is that the person gaining access to someone elses system is doing so with the sole purpose of doing something illegal e.g. fraud, blackmail etc. This might mean that they had to guess or steal the password in order to get into someones user area or their bank account. 3. Unauthorised modification of computer material This offence relates to the deletion or changes made to files with the intent to cause damage to an individual or to the health centres computer system. This offence also covers planting viruses to other peoples systems. Writing a virus technically isnt a crime; but if you knowingly transmit a virus to others, you are guilty under this section of the Computer Misuse Act. Copyright, Design and Patents Act 1989 This act was passed to make it illegal to copy files, software etc without permission. The law can be broken in three ways: 1. Using software without a proper licence. The health centre must ensure it purchases a site licence which allows everyone at the centre to use the software. 2. Using text or images from the internet and using them without the copyrights owners (the authors) permission or acknowledging where the health centre got them from. 3. A member of staff copying a computer program at the health centre and then running it on their computer at home without permission from the copyright holder. 4. Health and Safety Issues Relating to Computer Use The health centre must ensure under the Health and Safety Regulations 1992 that they provide a safe working environment for anyone using computers. The health centre must :Ensure that the computer equipment is safe. 1. Ensure workstations meet the required standards for health and safety i.e. provide proper computer chairs, foot supports, lighting etc. 2. Plan work so the staff have regular breaks which allow them to do non-computer work. 3. Pay for regular eyesight tests for staff using computers regularly. 4. Provide health and safety training and information to all staff. There are various health problems associated with the regular use of computers. Here are some of the most common problems and what can be done to reduce the risks: Health Problem Cause Solution Repetitive Strain Injury (RSI) * Repetitive finger, hand or arm movements. * Poor posture. * Badly designed workstations. * Ensure wrists are straight and elbows are close to your sides when typing. * Ensure posture is correct. * Take regular breaks. Eye strain * Staring at the VDU for long periods. * Poor lighting, glare from the screen, flickering screen. * Use a screen filter to reduce glare and keep your eyes at least 18 inches away from the screen. * Ensure appropriate lighting. * Have regular eyesight tests. * Take regular breaks. Back/Circulation problems * Poor posture. * Sitting all day in front of a computer. * Ensure posture is correct. * Take regular breaks and walk to improve circulation. The use of ICT when Paying Staff WagesStaff at the health centre are paid using a computerised system and their wages are paid straight into their bank account. The benefits to the health centre for having a computerised system: 1. It is quicker and more accurate than calculating wages manually. 2. The added security that wages are paid straight into bank accounts i.e. Electronic Funds Transfer (EFT) money is transferred from the health centres account to the individual staff members account. Employees at the health centre are paid weekly. Payroll uses a system called batch processing, this is where all data is stored up and then all processed together. In order to calculate how much each employee should be paid the following inputs, processing and outputs must take place. Inputs Processing Outputs Employee payroll number, name, address, DOB, marital status, N I number, hourly rate/annual salary, pension details, holiday entitlement, days off sick etc * Employee record will be read by the system. * Each employee will be paid by the system. * Each employee record will be updated by the system * The payslip * Money is transferred from the health centre bank account to each employees bank account. * Report for the health centre detailing updates, payment etc Methods of Maintaining Data SecurityData is invaluable to the health centre if they lose their data it is very hard to replace. Loss of data would cripple the health centre in the short term and may even jeopardise its existence as a service. Measures must therefore be in place to ensure data security. Security can be viewed in terms of physical security, access security and data security.Physical Security Equipment can be made more secure by: 1. Keeping a record of all serial numbers on each piece of equipment and mark the health centres name and postcode on all equipment so the police can identify stolen property easily. 2. The health centre could have a security alarm system and surveillance system on the building as well as ensuring that windows and doors are locked after surgery hours to prevent access. 3. The closing of blinds on windows and switching off monitors at night will make the computers less visible. 4. The use of fireproof doors and smoke alarms will help reduce the risk of fire in the building. Access Security Vast amounts of data is lost due to carelessness by employees e.g. not saving work, deleting files by accident, not saving files with sensible file names and therefore are difficult to find etc. Limiting each employees access to the system with help to ensure against the loss of data to the health centres system. 1. Password -this is still the major line of defence. Restrictions can be imposed on length of password and restrictions on the times a user can access the system. 2. Firewall this is a piece of software which sits between the health centres network and the rest of the internet. It will monitor the system for any breaches of security and protect the health centres information and computing resources by allowing only messages conforming to certain protocols (agreed set of rules) to be sent/received. 3. Anti-Virus Programs this software is used to detect viruses and to limit the damage by removing them. Data Security To prevent the loss of patients records etc the health centre needs to ensure that regular back-ups are made of the data on the system using suitable backing storage (also known as secondary storage). Types of Backing Storage Name of Device Advantages Disadvantages Hard Disks * Large storage capacity 20 gigabytes or more. * Faster to access * Any problems with the hard drive may mean all data stored on it will be lost Floppy Disks * Small and portable * Data can be transferred easily between different computers. * Disks can be made read-only which will reduce the chances of data being accidentally overwritten. * Small storage capacity 1.44 megabytes. * Accessing data is slow * Being floppy it is easily damaged Optical Disks e.g. CDs DVDs * Direct access to the data. * Faster to access * CD-Rs only allow data to be written onto them only once The above list is not exhaustive and you should explore other alternatives.Website Design and Hosting There are many reasons why businesses or individuals have a website. In the case of the health centre it has a website to provide information and services to patients e.g. providing advice on minor ailments, surgery hours etc. Some other purposes of having a website: Type of Site Reason Personal * Sharing pictures/stories with friends and family Business * Inform customers of their products/services * Company news, events etc * Recruit staff E-Commerce * Advertising their products/services for sale * Offering home shopping facilities Educational * Offer information on training * On-line encyclopaedias News and Entertainment * Latest world news * Sports information A website is made up of one or more web pages. A web page is created by writing code in a language called HTML (Hyper Text Markup Language) which was developed especially to create web pages. There are many web page designs. Most good web pages share some common elements: Web Page Element Its Purpose Banner This is the area at the top of the page and is often the same on all the other pages of the web site. It may contain a company logo, search box etc Menu System This area provides navigation around the site Content Area The main content of the web page is here. It may contain, text, images, sound etc. Footer This area will often contain copyright notices, terms and conditions etc. Navigation (method of moving around the site) is important especially if the site is made up of several web pages. There are 3 main methods to of using navigation: 1. The Hyperlink when you click your mouse on a navigation hyperlink it will take you to another page. This page could be on the same website or a different website (external link). 2. The Menu System the navigation menu gives you a choice of which page you want to view next. A menu is a set of hyperlinks grouped together. There are various menu styles such as a side menu which normally sits on the left hand side of the page. 3. Hotspot this is an area on the web page which when clicked will allow you to jump to another page. It is a way for the designer to make the hyperlink invisible or for them to allow you to click on an image in order to jump somewhere else. When you hover your mouse over a hotspot the cursor changes to a little hand There are a number of ways to create and design a web page: Design Methods Software Advantages Disadvantages Straight from a Microsoft Office application * Word * PowerPoint * Simple, just save as a web page * Can only create a basic page Text Editor * Notepad * Low cost as Notepad is free with windows * You have to know a lot about HTML code * Easy to make a mistake as all the code is written by hand Web Authoring Package * Microsoft Front Page * Macromedias Dreamweaver * It will provide ready made templates * Easy to add/remove pages without breaking the site navigation * Expensive * Takes time to learn In order for other people to see the health centres web site it must be placed on a web server. This is called hosting. A web server is made up of 2 things: * A computer * Running on the computer is a piece of software called web server software. The website is loaded on the servers hard disk, when a request is made to view a web page from the health centres site the server finds it on the hard disk and sends a copy to the computer that has made the request. The WWW is made up of millions of web servers, each connected to the internet. In order to view the health centres website, the requesting computer must be running another piece of software called the web browser. The Use of Systems Flowcharts Flow diagrams are a way to work out the best order to do something. System flowcharts show exactly how the data moves e.g. the health centre could produce a system flowchart to create a new patient record. The main symbols used to develop flowcharts are: Start/End The terminator symbol marks the starting or ending point of the process. It usually contains the word Start or End. Process A box can represent a single step (add two cups of flour), or and entire sub-process (make bread) within a larger process. Decision A decision or branching point. Lines representing different decisions emerge from different points of the diamond. Input/Output Represents material or information entering or leaving the process, such as customer order (input) or a product (output). Flow Line Lines indicate the sequence of steps and the direction of flow. Data storage Indicates a step where data gets stored. For Example Save Orders Delay Indicates a delay in the process. For example Wait 1 day There are benefits and drawbacks to using system flowcharts. Here are some of them: Advantages Disadvantages Flowcharts are good way to communicate the details of a process to all concerned e.g. programmers use them to write commands that will create the computer system. Some processes are so complex that it becomes difficult to represent them clearly in a flowchart. Flowcharts can help people analyse problems, highlight bottlenecks and is a good way to document a process. If an alteration needs to be made to the system, the flowchart usually needs to be redrawn. If it is a complicated flowchart, this can require a lot of work. Flowcharts enable an organisation to have a record of standard business processes. People need to understand what the flowchart means and what the different symbols represent. You cannot give a flowchart to a novice and expect them to understand it. The Use and Analysis of Survey Data The goal in any survey is to collect accurate and complete information. In order for a survey to be effective and provide meaningful data it should be conducted in a uniform manner i.e. all respondents must be asked the same question in the same way. Conducting a face-to-face interview and the completion of a questionnaire are 2 popular ways information is collected. Advantages/Disadvantages of Interviews Advantage Disadvantage Questions are fully completed as respondents can clarify points further with the interviewer. Interviews have to be pre-planned. A time and a place has to be convenient to both individuals. An individual may cancel. Detailed information can be gathered in a variety of formats e.g. written, voice recorded. Interviews can cause a change in behaviour and respondents may feel pressurised into giving an answer they would normally not give. The interviewer can give feedback to the respondent e.g. Thats important to know. This can be used to keep the respondent talking and therefore is likely to give more in-depth answers. Interviews are time consuming, costly and information taken by the interviewer may be too detailed, illegible etc Advantages/Disadvantages of Questionnaires Advantage Disadvantage Can reach a geographically wide spread area. Poor completion and return rate. Many people can be reached in this way quickly and cheaply Points cannot be clarified further and writing may be illegible. Easy to conduct statistical analysis on. If they are simple they have little information. If they are complex they may be difficult to understand. The health centre relies on information being up-to-date and accurate in order to plan or make decisions in the short/long term e.g. depending on the number of patients the health centre has will dictate the number of doctors it has on call. The type of information gathering techniques used will depend on the type of information required: * Quantitative information This is based on numerical facts, figures and statistics e.g. number of patients who are male, sales figures etc. * Qualitative information This provides depth and detailed information. It takes into account views, judgements and opinions etc. The type of questions asked will determine the type of responses given: * Closed ended questions These can usually be answered by a simple yes or no. They are restrictive and can be answered in a few words e.g. does this answer your question? Or can I help you? * Open-ended questions They require a more broad and lengthy answer and are used to gain more information from the respondent e.g. When you say [topic], what do you mean? Or What do you mean by [topic]? Hardware Software that could be used in a Health Centre Hardware Device Function Health Centre Applications Keyboard Input Patient detail input, database, spreadsheets. Mouse Input Most computer users prefer to use this. Scanner Input Scan hand written notes into the system (maybe from previous doctor). Digital camera Input Photo ID held on the system Temperature sensor (thermistor) Input (sensor) Environmental and safety control systems Smoke detector Input (sensor) Environmental and safety control systems Proximity detector Input (sensor) Environmental and safety control systems (doors) VDU Monitor Output Any application requiring Graphic User Interface (GUI) or information display. Receptionist: to up-date appointments Doctor: to view patients history Flat Screen VDU Output As above to save space LCD Display Output As above using laptops or in bright sunlight. Have limited viewing angle. Inkjet printer Output High quality low volume graphic publications and reports. Laser printer Output Volume printing such as welcome letters to new patients, mail shots to advise patients of changes in surgery hours etc. Dot matrix Printer Output Where multi copy output is required e.g. prescriptions. Software Programme Function Theatre Applications Database I/P Process O/P GUI Patient appointment system. Mail shot production. Spreadsheet I/P Process O/P GUI Financial analysis and reporting. Control programme I/P Process O/P GUI Environmental and safety control systems e.g. fire safety system. Word Processor I/P Process O/P GUI General office purposes. Patient letters and mail shots. Control Systems A control system is a system of hardware and software thats used to control the operation of a piece of equipment. Two types of control systems: * Dedicated: these are basic systems that carry out a pre-programmed set of instructions e.g. traffic-light system- lights change at fixed time intervals. * Computer-controlled: these use a computer to control the output device, and this computer can be connected to a sensor e.g. pressure pad sensor for automatic doors. Sensors measure physical qualities in the environment such as heat, light, pressure, sound etc. In order for a computer to control something there must be three things present: 1. A means of getting the information into the computer: An INPUT 2. Instructions for the computer to do something with the input: A PROCESS 3. It then has to be able to alter something in the outside world: An OUTPUT Most computer controlled systems use a feedback loop which is when information from a sensor is used to control the output device. The sensor sends signals back to the computer and the computer decides whether to make any changes based on this information. This happens again and again in the loop system. The flowchart below shows a loop system which represents a system for monitoring light levels outdoors and turning on a lamp when it gets dark (i.e. when the light intensity is less than 50 ona scale). Computer Controlled Systems Advantages Disadvantages Computers can respond instantly to changes. The system is expensive to purchase Systems can be running 24 hours a day, 365 days a year. Special software is needed. Computers can process data quickly and machines can operate faster than humans. If something unexpected happens, the system may not be able to think for itself. In the health centre the possible control systems are: A security alarm system which may have an infra-red sensor which sends a signal when the beam is broken. A heat sensitive sensor in the corner of a room which may detect the presence of a person. Temperature sensors which could be used to control the heating in the health centre. Analogue and Digital Signals Digital and analogue are two different types of transmission systems: * An analogue signal can be represented as a series of sine waves. The term describes any fluctuating or continually changing process. An example of an analogue signal would be the data sent along a telephone landline. An analogue sensor can take a range of values e.g. a heat sensor. * A digital signal has only two values On and Off. Data transmitted or stored with digital technology is expressed as a string of 0s and 1s. Each of these digits is referred to as a bit (and a string of bits that a computer can address individually as a group is a byte). An example of a digital signal would be the data sent into a television via a digital cable. An analogue sensor can only be On or Off e.g. pressure pad sensor. Computers cannot deal with analogue signals and therefore requires an analogue to digital converter (ADC).This is used to change the analogue data into digital data to allow the computer to process the information The ADC is connected between the sensor and the computers input/output port. Once the computer has processed the data, the output often has to be converted to an analogue signal and so a DAC (Digital to Analogue Converter) is used. Database Systems used in a Health Centre A database is an organised collection of data which is organised into fields and records. The main benefit to the health centre for having a database is that it allows them to search quickly for specific patient information. Databases can be: * Flat-File All data is stored in one large table which can be viewed by opening one data file. It can be created using a database system or a spreadsheet. It is ideal for small amounts of data that needs to be human readable or edited by hand. With this type of system there is unnecessary duplicating of data which can mean that mistakes are more likely to happen during data input. * Relational Data is split up into sensible groups and then stored in separate tables. In the case of the health centre they could have a table with customer data, a table with appointment data etc. All the data is linked together by key fields and a database management system (DBMS). This means that data does not have to be duplicated. Relational databases also have built in functions which allow retrieval, editing and sorting of data to be much quicker.

Prevention of Enzymatic Browning in Fruits and Vegetables

Prevention of Enzymatic Browning in Fruits and Vegetables Polyphenol oxidase (PPO) is known to be a key enzyme in enzymatic browning of fruit, vegetables, beverage and seafood in the food industry. The browning of food causes a great quality loss and economic loss of food products. Inhibition of browning by physical treatments has well been developed and there are a wide range of chemicals can also inhibit enzymatic browning. This article overviews the various chemical inhibitors against enzymatic browning in food. Enzymatic browning is one of the major causes in quality loss of vegetables and fruit, beverage and seafood. It is roughly accounted for over 50 percent losses in fruit [1]. It is very important to control enzymatic browning so as to minimize losses and maintain the economic values of the food products. In animal tissues, melanosis is the process results in the formation of dark pigments. The products of melanosis sometimes cause similar visual perception as spoilage and this would make customers not select these products although they are not harmful and do not influence taste of the food. Browning causes many deleterious changes in the organoleptic and nutritional properties of food products that decrease their market values. However, enzymatic browning is beneficial for some of the food products such as tea, coffee, and cocoa. The consumption of fruits and vegetables has been increased due to the nutritional recommendations for health maintain. As a result, the market values of mi nimally processed fruits and vegetables production increases and this will trigger and encourage research in enzymatic browning. Enzymatic browning definition Cell disruption caused by mechanical injury or temperature changes may lead to physiological disorders or even cell death. This loss of cell integrity results in the decompartmentation of phenolic substrates and enzymes [2]. Polyphenol oxidase (PPO) is a critical enzyme catalyzing the oxidation of endogenous phenolic compounds to form grey or brown colors in the enzymatic browning process. PPO is a term which includes a large number of related copper-containing enzymes, including catechol oxidase, tyrosinase and laccase. In the presence of oxygen, PPO oxidizes mono- and di-phenols to o-quinones. Once the products are formed, they polymerize to form high molecular weight compounds or brown pigments as they are highly reactive. The brownish color could be enhanced when they react with amino acids and proteins [2]. Importance of browning inhibition It is essential to control enzymatic browning in order to reduce the economic loss during fruit and vegetables processing. It is essential to control enzymatic browning for the better development in the food industry. The most common way used for the inhibition of browning is the addition of sulfating agents to inhibit PPO. However, sulfite is a toxic molecule and can react with a variety of humoral and cellular components and can cause toxicity [3]. Due to the adverse health effects caused by sulfites, alternative compounds are investigated for anti-browning properties. The ideal compound would be the one which is effective, does not cause any quality loss (eg. taste, flavor, nutritional values) and toxicity, as well as low cost. Until now, many approaches are available to inhibit enzymatic browning, which include the use of ascorbic acid, sodium chloride, kojic acid, 4-hexylresorcinol etc. Enzyme inhibitors, reducing agents, acidulant agents, chelating agents and complexing agents are the common chemical treatments of antibrowning [4]. In order to have a better control of enzymatic browning, it is important to understand its mechanism of actions, the property of the enzyme, substrates, products and their interactions. Minimizing the negative sides of enzymatic browning can extend the shelf life and increase the market value of the food products. Physical inhibition Physical treatments are one of the common approaches in the control of enzymatic browning in the food industries. Hot-air drying, freeze-drying, canning and bottling are examples of some preventive methods. Browning is enhanced by wounding of plant tissue as it stimulates phenolic biosynthesis, hence minimizing the mechanical damage of fruit and vegetables reduce the degree of browning. Reducing the temperature can slow down the rate of enzymatic browning as enzymes are generally inactive at low temperature. However, color change still occurs at 0oc, hence it is important to allow the crystallization temperature of water to be reached as rapidly as possible [5]. Color change would be blocked during commercial frozen (-18oC). When the temperature rises again, browning starts and the rate will be greater if the cellular structure of the plant tissues is damaged by freezing, peeling and slicing [5]. Heating or blanching is the simplest method to inhibit browning by denaturing the enzyme PPO. Heating temperature and time are crucial to maintain the quality of the food products as heating will affects the texture, taste, flavor and nutritional value of the food. PPO is completely destroyed at 80oC [6], but sufficient time is required for the interior part of the fruit or vegetables to reach such temperature. Blanching the green beans for 3.5 minutes at 82 oC and above, inactivated catalase, lipoxygenase, and polyphenol oxidase activities completely[6]. Protection of the fruit and vegetables from oxygen can prevent enzymatic browning when the plant organs cannot be branched. A variety of methods are used in food industries, including airtight package, partial vacuum and oxygen-poor atmosphere. Chemical inhibition Chemicais are the most commonly used for the control of enzymatic browning, but their use in processed food products is restricted to compounds that are nontoxic, wholesome and that do not adversely affect the quality[7]. Inhibition of enzymatic browning can be achieved by hindering the enzyme or by binding to its active site which lower the PPO activity. Chelating agents which remove the copper prosthetic group from PPO can inhibit enzymatic browning. Removing the substrates is another way to prevent enzymatic browning. Substances which undergo complexation with the phenolic substrate and enzymatic modification of phenols are possible ways to inhibit enzymatic browning. Besides substrate, inhibition targeted toward the products, o-quinones, can also be an approach to control enzymatic browning. Chemical inhibitors of enzymatic browning in food will be discussed in detail in this essay. Polyphenol oxidase Definition PPOs are first discovered in mushrooms by Schoenbein in 1856. They are copper-containing proteins and belong to the group of oxidoreductases. A copper prosthetic group is required for its activity. In the presence of oxygen, polyphenol oxidase catalyses reaction of monophenols to o-diphenols (monophenol oxidase activity). It also oxidises o-diphenols to o-quinones (dipehnol oxidase activity). The enzyme in plants have both mono-and diphenol oxidase activity and the ratio of monophenol to diphenol oxidase activity is usually 1:10 to 1:40. [8]. PPO is present in a wide variety of plants and the activity varies from one organ to another and varies inside an organ, depending on the types of tissues or cells. The role of PPOs in plants is believed to resist the infection of microorganisms and virus and to extreme climatic conditions. PPOs are also in involved the development of dark pigmentation in animals. The biosynthesis of melanin pigments and other polyphenolic compounds which often provide a protective function [1]. Indeed, there are many studies concerning the prevention of melanin formation on the face by inhibiting tyrosinase activity, so as to develop whitening agents for the cosmetic industry. Nomenclature Nomenclature of PPOs is sometimes confusing due to their similarity in nature. Jaenicke and Decker write Probably there is no common tyrosinase: the enzymes found in animals, plants and fungi are different with respect to their sequences, size, glycosylation and activation [9] PPOs must have a dinuclear copper centre, in which type 3 copper is bound to histidine residue in their active sites, and this structure is highly conserved [10]. PPOs are normally classified into three types for the convenient use of the term: Catechol oxidase Catechol oxidase (1,2-benzenediol: oxygen oxidoreductase, EC1.10.3.1) has both monophenol oxidase and diphenol oxidase activity. It is the most common form of PPOs in plants that when people talked about PPOs in food it normally refers to catechol oxidase. Reports on the molecular weight of plant PPO are very diverse and variable and it is estimated the molecular masses of PPOs ranges from 20 to 180kDa [2]. Most of the studies show PPOs have an optimum activity between pH 4 and 7, but some reports show that pH optima varies with the proportions of isoenzymes as well as phenolic substrates used [2]. The optimum temperature of PPOs ranges from 15 to 40 oC and this also depends on the same factors as pH. Tyrosinase Tyrosinase (EC1.14.18.1, monophenol, L-DOPA: oxygen oxidoreductase) refers to as monophenol monooxygenase and corresponds to the same enzymes as EC1.10.3.1 but which always catalyze the hydroxylation of monophenols. In aminals and fungi, PPOs are refered to tyrosinase as L-tyrosine is the major monophenolic substrate. It is very similar to catechol oxidase and sometimes tyrosinase is referred as PPOs. It catalyze two distinct reactions of melanin synthesis: the hydroxylation of tyrosine and the oxidation of 3,4-dihydroxyphenyphenalanine (L-DOPA) to o-dopaquinone. Tyrosinase has been a great concern in humans in the cosmetic industry as it plays a key role in mammalian melanogenesis, which leads to the formation of dark macromolecular pigments, melanin. Laccases Laccase (p-diphenol oxidase, E.C. 1.10.3.2)(DPO), has the unique ability to oxidase p-diphenols into their corresponding quinones, which allows it to be distinguished from catechol oxidase. The enzyme contains many subunits and there are three types of copper centers in each subunit. They occur mainly in fungi and higher plants while much less frequently in the plant kingdom than PPOs. They are glycoproteins with a carbohydrate content of about 15-41% and they have a molecular weight of about 60 to 80 kDa. Substrate Phenolic compounds are substrates for PPOs. There is a wide variety of phenolic compounds found in plants, but only a small number serves as direct substrates for PPOs. Degree of enzymatic browning varies widely from one plant to another. Not only content of PPOs contributes to the variation, quantitative and qualitative aspects of their phenolic content also affect enzymatic browning in fruit and vegetables. In the studies of enzymatic browning in various fruits such as apples, grapes, and peaches, the effects of phenolic content and polyphenol oxidase on the rate of enzymatic browning have been reported [11-13]. Phenolic compounds contain an aromatic ring with one or more hydroxyl groups, together with other substituents. The differences in species, ripening and environmental conditions of growth and storage influence the phenolic composition of plants. Phenolic compounds are essential in fruit and vegetables as they contribute to flavor, color and taste in fruits. Flavonoids are t he major phenolic compounds occurred in plants. Caffeic acid derivatives and monomeric flavan-3-ols often appear to be the best substrates [2]. In some cases, phenolic compounds which are not direct substrates can also take part actively in enzymatic browning by coupled oxidation reaction. Tyrosine, an amino acid, is a monohydroxy phenol and it is an important substrate for PPOs in animals. Caffeic acid derivatives, such as chlorogenic acid, the major diphenolic compounds in plants, act as substrates for polyphenol oxidases. Chlologenic acid is the main substrates for enzymatic browning in apples. On the other hand, some phenolic compounds may also act as inhibitors for PPOs. Apple polyphenol oxidases can be inhibited by various cinnamic acids acting as substrate analogues [1]. Mechanism of action Monophenol oxidase activity for the hydroxylation reaction is normally slower than the oxidation reaction for the production of quinine, which leads to the initiation of the polymerization reaction. Thus it is the rate determining step in the production of brown pigments from monophenols. One mole of oxygen is required for the reaction as shown in Figure 2. When there are only diphenolic substrates, production of the brown pigments will be faster due to their high catalytic rate in the formation of quinines. The primary products, o-quinones, are reactive and unstable compounds, which can undergo further oxidation to brown melanin pigment (figure 3). O-quinones are strong electrophiles which can suffer nucleophilic attack by water, other polyphenols, amino acids and proteins, leading to Michael-type addition products [14-16]. The final products have more intensive color than the o-quinones. Their color depends on the phenol from which they originate. Chemical inhibitors of PPO Plant Polyphenols Polyphenols are a diverse group of compounds having multiple phenolic functionalities [18]. Plants are a rich source of polyphenols which are almost free of harm effects. There are continued investigations of tyrosinase inhibitors from plant extracts, aiming to search what bioactive chemicals in plants have significant inhibitory effect. Flavonoids are one of the most common and best studied groups of plant polyphenols. Flavonoids can be further divided into six subgroups, which are flavanones, isoflavones, flavonols, flavanols, flavones and anthocyanidins. Some flavonoids such as catechin act as substrates for PPO while some of them, eg. quercetin and kaempferol have inhibitory effect on PPO [19, 20]. Isao Kubo studies the inhibition kinetics of kaempferol extracted from saffron flower and it is found that to be a competitive inhibitor, its inhibitory activity presumably comes from its ability to chelate copper in the enzyme [20]. This copper chelation mechanism may be applicable fo r all of the flavonols as long as their 3-hydroxyl group is free [20]. However, 3-o-glycoside derivatives, eg. kaempferol 3-o-glucoside, quercetin 3-o-glucoside, did not inhibit tyrosinase in high concentration [20]. This shows that the free hydroxyl group at C-3 may play an important role in the inhibition. However, some flavones which lack the 3-hydroxyl group, such as luteolin and luteolin-o-glucoside, still have tyrosinase inhibitory effect [21]. (−)-epicatechin 3-O-gallate(ECG), (−)-gallocatechin 3-O-gallate(GCG), and (−)-epigallocatechin 3-O-gallate(EGCG) in tea, especially green tea, are strong inhibitor of tyrosinase and it is found that GCG may act as a competitive inhibitor for the L-tyrosine binding at the active site of the enzyme [22]. It is believed that the flavon-3-ol skeleton with a galloyl moiety at the 3-position is required to inhibit tyrosinase effectively. When the hydrophobicity of gallates increases, the coumpounds are more resistant to be o xidized by tyrosinase as the tertiary structure of the enzyme is disrupted [23]. Structure-Activity Investigations of stilbenes and related 4-substituted resorcinols, obtained from Artocarpus incisus and other plants suggested that the 4-substituted resorcinol skeleton have potent tyrosinase inhibitory ability [24]. Oxyresveratrol, a stilbene isolated from Morus alba, exhibited 32 times inhibitory effect of kojic acid on tyrosinase and the inhibitors act non-competitively on the enzyme [25]. In the structure analysis of extracts from licorice root, glabridin exerts the strongest inhibitory effect on tyrosinase and the inhibitory effect was more effective against monophenol oxidase activity, the rate-determining step, than diphenol oxidase activity [26]. However, glabridins analog, glabrene, was 100-fold less active than glabridine while glyasperin C, isolated from the same part of the plant, was two times more active than glabridin [26, 27]. 6-hydroxydaidzein (6,7,4-trihydroxyisoflavone), one kind of hydroxyisoflavones isolated from soybean koji fermented with As pergillus oryzae, had 6-fold more than kojic acid acting competitively on the tyrosine binding site of the enzyme [28]. It is found that an isoflavone with hydroxyl groups at both the C6 and C7 positions in the A ring would increase both inhibitory effect and affinity to the enzyme more than 10 times [28]. Chalcones, with two aromatic rings in trans configuration, have strong inhibitory effects on tyrosinase. Licochalcone A isolated from the roots of glycyrrhiza species competitively inhibit tyrosinase and the effect was 5.4 times more active than kojic acid [29]. Kuraridin, isolated from Sophora flavescens, was 34 times of the activity of kojic acid in inhibiting monophenolase activity of mushroom tyrosinase [30]. It is believed that the 2,4-dihydroxyl groups in the aromatic ring of chalcone structure was the important substituted group to exert strong tyrosinase inhibitory activity as some simple 4-alkylresorcinols were found to exhibit the strong inhibitory effect [24, 31]. Chelating agents Chelating agents are chemicals that bind to metal ions and remove them from their sphere of action. EDTA (ethylenediaminetetraacetic acid) is a chemical preservative permitted for food industry use. It is a chelator and it is believed that EDTA inhibits PPO activity by either binding to the active copper site of PPO or reduces the availability of copper for the enzyme [7]. the United States Food and Drug Administration approved the use of Calcium disodium EDTA and disodium EDTA to be used as a food additive [32]. EDTA is usually used with other chemicals such as reducing agents (ascorbic acid) and acidulants (citric acid) to prevent enzymatic browning in food. Polyphosphates are another common chelating agent for anti-browning of fresh-peeled fruits and vegetables, but it has low solubility in cold water [7]. Sporix, containing citric acid, ascorbic acid, sodium acid pyrophosphate and calcium chloride, is a powerful chelator and also an acidulant. Browning prevention in apple juice a nd cut surfaces was obtained by Sporix [33]. However, it is not approved in U.S. for food use. Kojic acid (C6H6O4; 5-hydroxy-2-(hydroxymethyl)-4-pyrone), always being use as a standard to compare and study the tyrosinase inhibitory activity of various chemicals in research, is produced by several species of fungi, especially Aspergillus oryzae. Kojic acid possesses both antibacterial and antifungal activities. It is a good chelator and antioxidant that can prevent browning in both plants and seafood. It is commonly found as a food additive and in cosmetic products due to its tyrosinase inhibitory effect. In the phenolic acids tested (caffeic, chlorogenic, cinnamic, coumalic, ferulic, gallic, kojic) for inhibition on PPO, Son et al. reported that kojic acid showed the highest inhibitory activity on apple slice browning [34]. Kojic acid may inhibit the enzyme acting as a reducing agent. If high dose of kojic acid is given to rodents, the level of tyrosine stimulating hormone increases [35]. However, there is inadequate evidence showing that kojic acid would cause cancer in human . Consumption of kojic acid at levels normally found in food does not present a concern for safety [36]. Reducing agent Reducing agents can act as antibrowning agents by reducing the o-quinones back to o-quinones. Ascorbic acid is a good reducing agent and antioxidant which removes oxygen in polyphenol oxidase reactions. As the reaction resulting in the formation of o-quinones is reversible, in the presence of excess reducing agent, o-quinones are reduced to their original o-diphenols. Ascorbic acid is the most widely used antibrowning agent in food due to its reducing property as well as low pH. Since reducing agents act on o-quinones to prevent browning, the effectiveness of ascorbic acids would be decreased if their use is delayed until after the enzymatic reaction has started. In practice, about 0.1-0.3% of ascorbic acid can have protective effect against enzymatic browning. However, one of the drawbacks of ascorbic acid is that it can be oxidized to dehydroascorbic acid irreversibly during the reaction. As a result, it disappears rapidly and browning would occur again upon its depletion (figure 4 ). To overcome its rapid depletion, some derivatives, such as ascorbic acid-2-phosphate (AAP), or ascorbic acid-triphosphate (AATP), are used as substitutes. They are not reducing agents, but when the action of PPO presents they release ascorbic acids. Therefore they will not be oxidized by oxygen rapidly as AAP and AATP can remain stable in the presence of oxygen. Erythorbic acid (EA) has a similar effect and action as Acorbic acid in the inhibiting enzymatic browning. However, it is destroyed at a faster rate than ascorbic acid. Sulphiting agents including sulphur dioxide (SO2) and sulphite are very popular browning inhibitors used in the food industry. It is one of the most effective chemical inhibitors of browning and it is effective even in low concentration. Also, it is inexpensive and hence many food manufacturers use it to inhibit microorganisms growth and enzymes. Sulphur dioxide has three actions to inhibit browning. The first one is its reducing property to reduce o-quinones to its original o-diphenols. The second mechanism involves the formation of colorless products with o-quinones and the last one is that SO2 denatures PPO, resulting in the loss of functionality of the enzyme. Madero and Finne [37] reported that bisulphite could bind to the sulphydryl group at the active site of the enzyme so as to exert competitively inhibit the enzyme. Ferrer et al. [38] proposed that bisulphate inhibited PPO irreversibly by forming sulphoquinones when sulphites react with intermediate quinines, causing complet e inactivation of the enzyme. In addition, it also inhibits non-enzymatic browning that reduces pigmentation of the fruit and vegetables. Sometimes sulphur dioxide treatment is applied before deep-frozen, drying or freeze-drying of fruit and vegetables. In deep-frozen products of apples and apricots, fruit slices are soaked for 3-4 minutes in 0.4-0.5% sulphur dioxide solution. Sulphites are regulatory restricted in food products as it may cause potentially adverse effects on health. There are many reports showing that sulfites are genotoxic in vitro but not in vivo [39]. In the report of the safety evaluation of sulphites as food additives by World Health Organization (WHO), it concluded that when a suitable alternative method of preservation exists, its use should be encouraged, particularly in the applications in the food industry that the use of sulfites is extensive which may lead to its high intake as high level of sulfites in the body may cause life-threatening adverse reactions [39]. Thiol containing (sulfhydryl) compounds are compounds that an oxygen atom in the compound has been replaced by a sulphur atom. Many studies showed these compounds such as cysteine, N-acetyl-L-cysteine and reduced glutathione are able to inhibit enzymatic browning in fruits and vegetables [40]. In this group, cysteine is the most effective anti-browning agent. The proposed mechanism was that it reacted with the quinone intermediates to form stable colorless compounds. The cysteine-quinone adducts are also the competitive inhibitors of PPO. Nicolas et al. showed that cysteine directly inhibits PPO by forming stable complexes with copper [40]. However, use of cysteine is not so encouraged in the food industry because concentration of cysteine used to achieve significant inhibitory effect on PPO would have negative effects on taste. It has also been shown that Maillard reaction products (MRPs) are potential inhibitors enzymatic browning. Amadori rearrangement products, key intermediates in the first states of the Maillard reaction, has chelating, reducing and oxygen-scavenging properties and it might inhibit enzymatic browning [41]. The MRPs derived from glucose with sulfhydryl amino components (cysteine or the tripeptide, glutathione) could be considered as potential natural inhibitors and this was supported by Billuad et al.s study [42]. In a further study conducted by Hesham A. et al., the inhibitory effect of the thiol containing compounds was comparable with 4-hexyl resorcinol and being significantly (p < 0.05) higher than ascorbic acid. The MRPs derived from cysteine/glucose model system were more active than their counterpart derived from cysteine/ribose model system [43]. In a study examining various types of MRPs for their tyrosinese inhibitory effect, monosaccharide-glutathione was more active than glutathione [44]. However, MRPs are unstable and they may negatively affect the sensory quality of the food products as there was unpleasant odor formed from t he apple slices treated with MPRs [44]. Acidulants Most enzymes especially oxidative enzymes activity is very pH-dependent. Extreme pH can denature the enzymes that lead to the loss of the catalytic function. The groups in the active site of the enzymes are ionizable. In the environment of high proton concentration, the structure of the active site may be affected and there may be conformational change that decreases the binding of substrate and catalytic activity. A pH below 3 can effectively inhibit PPO activity [45]. In addition, under extreme pH, substrates may be degraded or change its conformation; as a result, the degraded substrates share the molecular features of the substrates that they may act as enzyme inhibitors [46]. Common acidulants use for PPO inhibition are citric acid, organic acids such as malie, tartaric and malonie acids and inorganic acids such as phosphoric and hydrochloric acids. Citric acid is an acidulants which widely used in the food industry as it is cost effective and highly available. 0.5-2% of it has protective effects against enzymatic browning in fruit and vegetables. The use of 100mmol/L citric acid combined with 10mmol/L glutathione was found to give a great control of browning in litchi fruits and it is recommended this combination can be a good way applied to control litchi fruit quality [47]. Since it is difficult to achieve efficient browning inhibition through pH control solely, citric acid is frequently used in combination with other anti-browning agents, such as ascorbic acid to chelate the copper of the enzyme. However, when the pH is lowered to a level the taste of the food products may be affected and it only can be applied in acidic foods. Complexing agents Complexing agents are able to form complexes with PPO substrates or reaction products, so as to reduce the browning effects. Cyclodextrins and cyclic nonreducing oligosaccharides of six or more D-glucose residues are examples of complexing agents. The hydrophobic central core of cyclodextrins can form inclusion complexes with phenol compounds, leading to the depletion of PPO substrates. Due to the limited space in the core of cyclodextrins, larger guest molecules only partially bind to it and form relatively weak complexes. However, chemical modification of cyclodextrines increases the binding and hence increases the inhibitory effect on PPO. In a study using chlorogenic acid as a substrate to compare ÃŽ ±-, ÃŽ ²- and ÃŽ ³-cyclodextrins in the formation of inclusion complexes, ÃŽ ²-cyclodextrins are more effective in inhibiting browning in apple juice [48]. The internal cavity of ÃŽ ²-Cyclodextrins is non-polar that it induced inclusion complex formation with the phenolic substrates of polyphenol oxidases, preventing them oxidizing to quinones and hence stop the subsequent polymerization to brown pigments. However, complex formation by cyclodextrins is not specific and it may remove the desirable color and flavor compounds of the food product. Cyclodextrins are insoluble in water, so it is better to be used in volatile or insoluble food ingredients in the food industry. The use of cyclodextrins in fruit and vegetable juice are patented, but it have not been approved to use in food by the FDA [49]. Chitosan, a naturally abundant polymer of ÃŽ ²-(1-4)-linked -D-glucosamine, is obtained from the chitin of shellfish. It is widely used in agricultural and horticultural as natural biocontrol and elicitor, water filtration and biomedical. Chitosan is a kind of dietary fibre that have an effect in reducing the absorption of bile salts in the small intestine, hence lowering the blood cholesterol level. It also helps to stop bleeding and has anti-bacterial effects. It is safe and non-toxic, and may even gain health benefits to the body. It has been reported enzymatic browning was inhibited by adding 200 ppm chitosan to Mcintosh apple juice [50]. When 2% of chitosan was treated with shrimp during storage, the incidence of melanosis was reduced [51]. Another study showed that chitosan coating can inhibit enzymatic browning in longan fruits and it can improve shelf life and quality of the fruit [52]. The effect might be due the formation of protective barrier on the surface of the fruit, p reventing the supply of oxygen to PPO. Therefore it is applicable that chitosan can be used in the combination with other agents to control browning and improve quality in fruit and vegetables during post-harvesting and storage. Enzyme inhibitors 4-hexylresorcinol is the one of the most potential PPO inhibitors apply to fresh-cut products. It has obtained the GRAS status for use in the prevention of shrimp melanosis and it proved to be more effective than sulphites in the inhibition of melanosis [7]. Due to its specific mode in the inhibition of enzymatic browning and effectiveness at low concentration, it may be a potential substitute to sulphites. The combination of it with ascorbic acid improved browning control in apple slices [53]. In a study investigating the combination effect of cysteine, kojic acid and 4-hexylresorcinol on the inhibition of enzymatic browning in Amasya apple juice, the interaction of kojic acid and 4-hexylresorcinol was found to have a positive effect on the inhibition of enzymatic browning [54]. Everfresh, a patented product containing 4-hexylresorcinol as the active ingredients and sodium chloride, showed better stability to blackspot formation than sulphites and it is proposed to be use for the in hibition of enzymatic browning in fruit and vegetables [55]. Sodium chloride, or saline water, is widely used in daily life as an anti-browning agent in freshly cut apple. It can also slow the microbial growth in the food products. Its effects on PPO increase when concentration increases. In an experiment examining the effects of salinity on PPO and peroxidase activity, increasing levels of salinity  reduced both oxidases activities immediately after cutting and throughout 7  days of storage [56]. Samples cultivated under high  salinity had also the lowest change in colour and showed the lowest reduction in total phenolic content and antioxidant capacity after 3  days of storage [56]. However, due to its inadequate protective effect at low concentration and unwanted salty flavor at high concentration, its application in the food industry is limited. When it is used with ascorbic acid and acidulants such as citric acid, the inhibitory effect is enhanced and prolonged. However, as the pH is getting higher, the inhibitory effect would dec rease. Its inhibition to PPO might be achieved by interacting with the copper at the active site of the enzyme. Sodium chloride at a concentration of 2-4% is usually used to inhibit browning in the food industry. At 1-2% concentration soaking for less than 1 minute, it can afford temporary protection from surface browning of sliced peeled apples for freezing, or ready-to-use fresh food. Other chemical inhibitors Sodium chlorite is an effective sanitizer inhibiting microbial growth. It can generate chlorine dioxide in acidic environment. Chlorine dioxide is a very powerful oxidizing agent and found to have inhibition in browning reaction. The anti-browning effect of sodium chlorite was gr