Analogies Essay Example | Topics and Well Written Essays - 250 words

Analogies - Essay Example A disease that has very devastating effects on an individual is bound to change that specific individuals biochemistry. The assumptionis that, if a person has a severe disease like PKU, there would have to be some alteration in some of the chemicals handled in the body. All of the bodys chemical courses precede, particular metabolic pathway or route. A Los Angeles freeway system analogy could be applicable in this case. If an accident occurs in Anaheim, traffic may flock in downtown Los Angeles. After a while, substitute roads begin to become operational and the traffic starts to move again but at a slower pace. If the number of cars taking different alternate routes were measured, it would be possible to pinpoint precisely where the accidentoccurred. By use of this analogy, the chemicals eaten as food are the traffic and proceeds along marked major highways known as metabolic pathways until an accident ensues. The accident could bean infectious disease, a mutation, or even a vitamin deficiency. Consequently, after the accident, the traffic courses of molecules are averted onto the slow alternate routes as a substitute of the twelve-lane superhighway. The individual with the slow flow of molecules is alive however, may not be as operational as individuals who has all the metabolic highways are open. The bottleneck with using thi s highway analogy is that; supposing certain freeways were not even registered on the highway map since the people who amassed them were not from town and did not know about them. Overall, analogies are effective strategies for communicating complex materials and concepts and a person with little knowledge of the functionality will easily

Stay at Home vs Working Mothers Essay Example for Free

Stay at Home vs Working Mothers Essay I have been fortunate enough to experience being both a stay at home mom and a work away from home mom. Currently there is a societal debate on which approach raises a healthier and better adjusted child. On that I cannot comment as I have not yet raised a child to adulthood, but having my own mixed feelings on this topic I can clearly see the vast differences to each method. Does working away from home make a more secure and adaptable child? Does staying home form a stronger bond? Does working away from home leave a child to be raised by a daycare provider with different values than your own? Does staying at home compromise social skills and personality? These are the questions that most parents face when they are trying to balance raising a happy and healthy family with paying bills and providing adequate food and shelter. Is one choice really better than the other? I will attempt to use my humble experience to compare these two approaches, not in an effort to decide which the ideal is, but simply to point out what I see to be the differences between each. Each morning as I headed to work, I stopped off along the way to drop my child off at a carefully chosen home daycare facility. From day one, I was fortunate enough to have a child that was easy going enough to leave me for a few hours each day to learn and grow in an environment where learning was first and foremost. I’ve never had to deal with the crying and leg-clinging torture sessions that many children and parents go through almost every-single-day. As a new parent I agonized over the decision to go back to work and send my baby to daycare or stay home and live in poverty because I couldn’t bear the separation. I thought that I was doing my child a disservice by leaving her and creating an insecure environment. On the contrary, I felt that leaving her in the care of someone that I have carefully screened and interviewed has made her a more secure little being. She was secure knowing that mommy leaves her in the morning for a fun filled day of activities and story time and will come back every evening like clockwork to pick her up. She knows that I will always come back. Being a stay at home mom, with all its merits, doesn’t give a child the opportunity to experience his parents leaving and coming back. The routine is not a routine, mommy is always home and there s never a need to worry because she is there to immediately respond to every irrational need and desire. In this scenario a young child never has to experience separation or getting used to a different style of care. Sometimes while at work I get emotional; am I missing out on my little ones formative years? Is she missing out on a mommy that should be there with her at this crucial time? I am! She is! It is me who should be taking her to the park, teaching her to go down the slide and to not let go on the swing. Is she forming a stronger bond with her provider than with his own mommy? Is she feeling so comfortable at daycare that she is not comfortable at home?. Those stay at home moms no doubt have a different kind of bond that working moms don’t have. They are home all day every day to attend to each bump and scrape; to sleep train and potty train on their own terms with a consistency that will foster a strong, unbreakable bond. Oh, don’t get me wrong, working moms have strong bonds with their children too, but they are just following the instructions that someone else is leaving for them. There are six things to consider when deciding whether or not to go back to work or to stay at home with your child or children. They are as follows: 1. Money- Consulting with a financial planner would help you to make a responsible decision because it is important that you are able to afford to stay home if that is your decision. 2. Personal Preference-It is crucial that you understand your own feelings concerning staying at home vs. going back to work because these feelings will affect your children’s lives. 3. Your Significant Other-Your partner’s support in your decision is important and crucial. 4. Social Network- Find a group of friends who are doing the same thing you are doing.  This will be a circle of friends who will provide you with a huge amount of support. 5. Career Workplace-How family friendly is your workplace and your boss? 6. Culture- Think about how your family has raised all the children in the past. How will you let family tradition influence your decision? Above all, it is important to remember that Mother is not spelled p-e-r-f-e-c-t-i-o-n. All our children ask us to do is love them and take care of them. Working vs. staying at home is a decision that you have to make for your whole family keeping everything above in mind. For now, from my stand point there is no right or wrong answer, responsible parents do what they need to do to take care of their children. In this day and this economy being able to stay at home is a luxury and it may not always be the best option. And while being a working mom has definite emotional drawbacks it has strong arguments for being a healthy alternative. In any event there is no reason for one side to bash the other. Either can work if you allow it to . If parents provide love, comfort and security and plenty of quality time, we can be sure that this generation will be just fine.

The Cocoa Industrys Effects on Ivory Coasts Economy

The Cocoa Industrys Effects on Ivory Coasts Economy Chocolate is a sweet delicacy that is associated with joy, comfort and delight. However most consumers do not consider the origins of chocolate and the process it has gone through before it is purchased and eaten. Chocolate is a highly consumed treat in Canada and the United-States, and it is one of my personal favorite sweets, yet there are many worrisome issues that happen throughout chocolates production. The cocoa bean, chocolates main ingredient, must be grown in tropical climates and it is therefore grown in several countries in Africa, Asia and Latin America. West Africa is the largest exporting region of cocoa beans, with the Ivory Coast as its principle provider, supplying 40% of the worlds cocoa reserves and it comprising one-third of the countries economic revenue (Isern, 2006). The Ivory Coasts economy is therefore extremely dependant on cocoa bean buyers who in turn rely on the consumption of chocolate in North America and Europe. This has not only led to numerous econom ic problems, including an unbalanced economy and high debts, but also several social problems, such as child labour. It is imperative to understand the conditions that have led to this social injustice, because Sub-Saharan Africa has the leading rate of child labour worldwide, and the Ivory Coast is a key contributor to this problem. (Kielland and Nkamleu, 2005). For my research, I will examine how the Ivory Coast has become dependent on cocoa exportations and the role transnational corporations have played throughout this process, resulting in them having increasing amounts of power in the cocoa industry. I will also examine the effects of these changes on the Ivory Coasts economy and on the labour force. My working thesis is as follows: Due to the liberalization of trade policies, the Ivory Coasts economy has become reliant on cocoa exportations. As a result, transnational cocoa buyers have obtained power over social conditions within the country, leading to the unethical practice of child labour. To fully expand on this thesis, I will firstly explain the conditions that led to the implementation of structural adjustment programs (SAPs) by the International Monetary Fund (IMF) and the World Bank in the Ivory Coast. I will secondly examine the consequences of the SAPs on their economy and the increasing centralized power that transnational buyers have obtained. Thirdly, I will examine the effects this has had on child labour and finally the initiatives the Ivory Coasts government and the global community have taken to eradicate child labour. The Historical Context of Liberalization Ever since the Ivory Coast has become independent from France, its economy has been seriously dependant on primary commodities, particularly cocoa (Ahoua 1993). The cocoa industry was regulated by a public organization established by the Ivorian government called the Caisse de Stabilization (Caistab), that offered subsidies, controlled exports in order to protect the Ivorian cocoa market (Losch 2001). However, regardless of the Caistab, the Ivory Coast did not have the economic capacity or stability to deal with the effects of the oil crisis in the 1970s, which resulted in a global drop in cocoa prices. (ibid). The fluctuations of cocoa prices already impacted the countries inner stability and prosperity, causing the beginning of several long-lasting economic issues. Along with the Caistab, the Ivorian government was equally providing funding for infrastructures, such as transportation and energy, and the development of a nationally owned cocoa transforming industry, called SIFCA (Ah oua 1993). All this led to increased lending from banks, amounting to the formation of enormous debts. From 1987 to 1989, the Ivory Coast actively attempted to exert power on the globally dropping cocoa prices by withdrawing from the markets and stopping all exportations. (Losch 2001) However, the Ivory Coasts government was incapable of sustaining such a protest due to their economys dependence on cocoa profits, forcing them to recommence exportations after two months (ibid). This had little effect prices, since corporations had enough stored cocoa to sustain the protest, however it had disastrous effects on the Ivorian economy, pushing their already indebted economy into a crisis (ibid). All these issues created the conditions leading to the liberalization of the Ivory Coasts economy. To amend their problems, the Ivory Coast needed to receive loan from the International Monetary Fund (IMF) and World Bank (WB). To receive these loans, countries needed to implement Structural Adjustment Programs, fulfilling the stipulations dictated to them by these international organizations. Some conditions included the dismantling of the Caistab, a further drop in the prices of Ivorian cocoa, a cutback in government subsidies given to cocoa farmers, a reduction of tariffs on imports and lesser taxation on industries (Ahoua, 1993). These reforms were suppose to allow the country receive funding from transnational corporations, allowing them to repay their debt. Pardoning the countrys debt was not a considered option by the IMF or WB (ibid). Moreover, social reforms were promised, to ameliorate education and health care, however this was to be effectuated without receiving additional funding and by promoting privatization, which rendered no real improvements (ibid). The Increasing Power of Transnational Corporations All these adjustments were meant to decrease government spending in the cocoa industry and encourage privatization resulting in the development of the country. However, the profits coming from these initiatives were used to further develop the cocoa industry, and not other sectors of the country, increasing the countries cocoa dependency (Isern 2006). Initially, cocoa farmers had control over the markets since there were several buyers competing for their beans, however the centralization of cocoa producer and manufacturers rapidly turned the industry into a buyer-driven market (Folds 2001). Three main cocoa bean buyers have subsequently emerged out of this process: Barry Callebaut, Cargill and Archer Daniels Midland (ADM) (Folds 2002). This oligopoly forces farmers compliance with the conditions demanded by the transnational buyers, otherwise famers are incapable of selling their cocoa beans. The Ivory Coasts cocoa bean processor SIFCA was also bought by Cargill, rendering their gov ernments attempts to influence the processing industry ineffective (Losch 2001). To make matters worse, the global demand for cocoa is far inferior to the supply provided by the Ivory Coast and competing countries, such as Ghana and Indonesia (ibid). This is detrimental because the Ivory Coast is obligate to produce the best quality cocoa for the lowest price possible to attract the investment from the limited number of corporations, resulting in a further drop of the global cocoa (Losch, 2001). Due to this, farmers are often forced to resort to child labour to overcome these constraints. Another dimension that limits the power farmers have in the market is the two-tiered nature of the cocoa industry. Folds (2002) distinguishes them into grinders, who transform cocoa beans into butter, powder or liquor, and branders, who then transform the cocoa into finished products. This division can create confusion when trying to designate whose responsibility it is to ensure the use of ethical labour practices (Isern, 2006). For example, in 2005, Nestlà ©, ADM and Cargill were sued by the International Labour Rights Fund (ILRF) for buying chocolate from farmers using child labour. Nestlà © denied its involvement by stating that it has no direct cocoa procurement in Ivory Coast, since the company directly buys transformed beans from ADM or Cargill (Orr, 2006). Additionally, ADM and Cargill buy their beans from middlemen, and not immediately from the cocoa farmers, giving them the opportunity to once again pass off the blame (Parenti, 2008). As a result, consumers are increasing ly disconnected from the process and conditions laborers are subjected to in chocolates production. However, certain initiatives have derived from trade liberalization that have helped empower farmers and strive for better labour conditions. There is a growing consumer demand for products created under ethical conditions, creating special markets that can have positive effects in countries (FLO 2005). For example, the Fair Trade movement has aimed to eliminate child labour in the cocoa industry and allows consumer to demonstrate their support for this cause by buying products under these labels. (ICCO 2006). Specifically, the Fairtrade Labeling Organization (FLO) has set standards to determine what is considered Fair Trade cocoa, and has certified compliant companies and countries, giving consumers the information needed to make responsible purchases (FLO 2005). The Max Havelaar Foundation has also contributed to this cause by providing fair wages to small-scale farmers, and supporting fair trade cocoa. (ICCO 2006). Nevertheless, Fair Trade cocoa has remained unpopular, representin g 0.1 % of the market (ICCO 2006). Furthermore, Fair Trade cocoa is not commonly produced in the Ivory Coast, rendering zero sales in 2004 (FLO 2005). Although these organizations have been created through consumer demand for them, they have been unsuccessful in producing sustainable change in the Ivory Coast. This demonstrates the need for different initiatives coming from within the countries, as well as global initiatives to reduce child labour. The Consequences on Child Labour Several initiatives have been established to eradicate child labour in the Ivory Coast and the cocoa industry. In fact, the Ivorian government has officially prohibited children under the age of 18 from working, and has signed the Harkin-Engel protocol to fully abolish child labour from cocoa farms (Parenti, 2008). The International Labour Organization and transnational corporations, such as Nestle and ADM, also voluntarily signed this protocol to abolish the worst form of child labour (Isern, 2006). Prohibited activities include wielding a machete, spraying pesticides and heavy lifting, since they are deemed as harmful forms of labour (Parenti, 2008). However, even with these attempts, little improvements have been made and issues of blame and responsibility have been created. Does the Ivorian governments failed initiatives warrant an increase in activities by international organizations and transnational corporations within their country? Or is this an infringement upon the Ivory C oasts sovereignty? The global community answer to this is that transnational corporations should be held responsible. For example, in the newspaper article Slave Chocolate, protestors in San Francisco expressed their disproval of Nestlà ©s labour practices, determining that it is undoubtedly Nestlà ©s responsibility (Orr, 2006). A solution to ensure the responsibility of transnational corporations, originally proposed by The Harkin-Engel protocol, was to implement a child labour label on chocolate products, in order to easily inform consumers about the labour conditions involved throughout their production. (Parenti, 2008) Although this seemed like a good initiative to reduce child labour, it could instead have harmful effect on the poorest farmers and likewise the Ivorian economy. Consumers would discriminate against chocolate produced with child labour, further punishing the poorest farmers who necessitate its use (Isern 2006). This would ultimately worsen the problem and increase the rates of child labour. This demonstrates that policies will essentially need to target trade laws and try to establish a more just free market. On the other hand, it can also be argued that child labour in the Ivory Coast is not entirely a product of the economic dependency on cocoa exportations. In Kiellands (2006) study, she remarks that most forms of child labour were in fact seen as a socialization method; giving families the opportunity to teach their children the proper methods of farming cocoa. She also remarks that community involvement is a more prevalent value in the Ivorian culture, and therefore child labour is often seen as the childs contribution to society. However, there are also many dangers with child labour such as trafficking, abuse and harmful labour practices. Additionally, children who worked on cocoa farms were less likely to attend school than those who did not farm cocoa (Kielland 2006). She suggested that more a more effective implementation of governmental policies would be necessary to prevent child labour by, for example, providing social services and ensuring that adult wages were sufficiently high, thus making child labour unnecessary (ibid). A stricter implementation of government policies surrounding school attendance could also help eradicate child labour. Conclusion To conclude, transnational corporations have obtained increasing amounts of power in the cocoa industry and the Ivory Coast because of trade liberalization and the centralization of the cocoa processing industry. This has had several consequences, such as an increased economic dependence on cocoa exports and higher rates of child labour within the country. Although the Ivory Coasts government and international organizations have attempted several initiatives to reduce child labour, none have been successful in creating sustainable change. Therefore, it becomes important to try new initiatives that confront the issues of the free market, because there is a direct correlation between child labour and the liberalization of cocoa trade. Furthermore, it is important to understand the surrounding complexities involving child labour, for example the different power relationships that come into play, in trying to effectively abolish it. More research is necessary to find a solution that will allow the Ivory Coasts economy to develop without negatively impacting human rights.

Stephen Chboskys The Perks of Being a Wallflower Essay -- Chbos

Stephen Chbosky's The Perks of Being a Wallflower The complexities of growing up can be overwhelming, but one must overcome the realities of the wild and poignant roller coaster of youth in order to live a sensible and productive life. The Perks of Being a Wallflower begins as the protagonist Charlie, starting his first year of high school, deals with the suicide of his single close friend named Michael and the lingering feeling of guilt over the death of his aunt. Prone to depression, introverted, and on the fringe of trouble in many aspects of life, Charlie is a wallflower who, with the help of his English teacher and two friends Sam and Patrick, comes to terms with life and learns to interact. It is difficult to come out of one’s shell and accept the reality that one has recently lost two very important people. As an entering freshman, Charlie lives a remarkably passive existence primarily due to the loss of his favorite aunt and best friend Michael. This can be seen as Charlie expresses his thoughts and feelings toward people that revolve around him: I look at people holding hands in the hallways, and I try to think about how it all works. At the school dances, I sit in the background, and I tap my toe, and I wonder how many couples will dance to â€Å"their song.† In the hallways, I see the girls wearing the guys’ jackets, and I think about the idea of property. And I wonder if anyone is really happy. I hope they are. I really hope they are. (23). As the quote indicates, Charlie â€Å"uses thought to not participate in life.† Instead of being an active participant in life, ... ...ing the love we think we deserve. After everything Sam and Bill say, Charlie figures that he should just do what he wants to do. He starts kissing Sam where they lay down on the floor and later attacks the ocean bed. He officially becomes a â€Å"participant†. In order for our lives to be content and effective, we must learn to open up and interact with others so that we can discover who we are and who we are to become. Today, there are many teens who have low self-esteem due to their appearance or timidity. They do not realize that there are chances of being accepted by others and judged by their inner body instead of the outward appearance once they start participating. Though Charlie had the same feeling as these teens at the beginning of his freshmen year, his active participation in life leads him to feeling infinite and grateful without any sensation of terror.

Ab105 Organizational Behavior Critical Thinking

AB105 Organizational Behavior Critical Thinking The Management of Organizational Justice By Russell Cropanzano, David E. Bowen, and Stephen W. Gilliland Summary of the key issues This paper has addressed the organizational justice from various aspects and provided recommendations to enhance the fairness in the managerial activities. Firstly, it has discussed the importance of justice in workgroup from its long-range benefits, social and ethical considerations. Secondly, the authors analyzed the three components of organizational justice, namely distributive, procedural and interactional justice in details to highlight the differences between the three in business activities. Next, the paper summarized the influences of organizational justice and these include enhanced trust and commitment, improved job performance, more helpful organizational citizenship behavior, as well as greater customer satisfaction and loyalty. Lastly, after identifying the critical significance of organizational justice in building a company’s identity, recommendations on how to enhance the fairness in managerial activities are proposed. The authors had cited examples from several past studies and discussed from five angles which are hiring, performance appraisal, reward systems, conflict management and downsizing. Other Theoretical Perspectives on Organizational Justice This paper has mentioned the equity theory which is one of the earliest theories of justice brought by Aristotle. This theory emphasizes that people should be paid in proportion to their contributions. Nevertheless, equity theory focuses more on the distributive justice. Through careful research, there are other perspectives and positions on this issue. Fairness heuristic theory Fairness heuristic theory is concerned with how people react to outcomes of their authorities, and makes some predictions concerning the relationship between perceived fairness of procedures, perceived fairness of outcomes and acceptance of outcomes. This theory highlighted that employees would make decisions about others’ trustworthiness. It also discussed whether one can avoid exploitation by using available information. Uncertainty management theory Uncertainty management theory assumed that people manage uncertainty by using fairness; for instance, receiving information on the reliability of an authority figure may reduce uncertainty about unjust treatment in the future and alleviate doubt about the outcome of a possible figure. Uncertainty theory has explained why people care about justice and how they form justice judgment. This theory has relevant implications as information on managerial decisions should be provided to gain the trust from the employees to enhance procedural justice. Group engagement theory This model explains why and how procedural justice shapes cooperation in groups, organizations and societies. It has established a link between justice and corporation via its several hypotheses, such as the importance of procedures in shaping one’s social identity within a group, and the impact of this social identity on his attitudes, values and behaviors. Group engagement theory has provided insights in organizational justice as managers should treat people fairly to win their corporation. Evidence Assessment In general, the evidence provided in this paper is reliable and well-established. The key issues of the article such as importance of organizational behavior and recommendations on fairness workplace enhancement are thoroughly – discussed. The authors had researched over a wide pool of studies across a time span of 20 years, ensuring the relevance, accuracy and sufficiency of the data. Nonetheless, there are some minor limitations. First of all, little evidence was demonstrated to support the discussion on prescriptive and subjective justice, with mere definition of the two, which in turn affects the completeness of the analysis on organizational justice management. Secondly, the authors mentioned about the external equity in affecting reward system, but no proof was offered to support the claim on the influence on the disparity of salaries from the external marketplace. Lastly, although this paper has detailed coverage on the improved employee organizational behavior by establishing organizational justice, it only focuses on the procedural justice and this coverage is insufficient in my viewpoint. Other research suggest that all the three types of organizational justice have direct relationships on enhancing citizenship behavior as â€Å"trust appears to be an important mediating variable (Konovsky and Pugh, 1994). Organizational justice enhances employee trust, which in turn stimulates the display of citizenship behavior. † Assumption Analysis Several assumptions are identified in the analysis of this paper. This paper assumes that self – interest motives favor equity and people across different age groups, genders, races and education levels will perceive justice similarly (which might not be necessarily valid). Another underlying assumption in the managerial activities is that decision makers will treat the employees with genuineness while undertaking the recommended measures, because the absence of the sincerity will make the employees feel disrespected and manipulated. The influence of different contexts plays a key role in organizational justice as it will affect one’s justice perceptions. Out of all the variables, gender and culture are the main factors. Studies have shown that male’s major concern in reward allocation was protecting their own interests while females’ interests lie on maintaining the welfare of all group members. Furthermore, in a society with emphasis on collectivism, members emphasized more on particularistic principle of need or social status distribution instead of equity, as compared to societies based on individualism. Conclusions, Implications and Consequences This article has provided a detailed understanding of organizational justice. In conclusion, injustice in an organization will create problems, leading to inefficiency and unproductivity while justice acts will provide excellent business opportunities and maintain respect and trust within organizations. Therefore, it is advisable to put in efforts in improving distributive, procedural and interactional justice simultaneously in managerial activities. Furthermore, managers could also apply different organizational justice measures according to employees’ various justice perceptions which vary with genders and cultures, in order to reap the maximum benefits from exercising organizational justice in a workplace. (Word count: 1019 words)

Marijuana Argument Paper

To Legalize or Not to Legalize The question of whether or not to legalize marijuana has been a hot spot for this generation and is something that has enflamed a lot of passion in people. This issue plays a big part in the lives of Americans because marijuana is the most commonly used, and abused, drug in the United States (DuPont par. 3). Some people think it should be legalized because it would be good for the economy, it would help stop the drug wars, and because they believe it’s the right of individuals to smoke marijuana if they so desire.Other people think that it should not be legalized because of its negative health effects, dangers to society, and because they don’t think that marijuana has any benefits to the community of our country. Because of the scope of this issue, there are many strong arguments for and against the legalization of marijuana. However, in my opinion, marijuana should not be legalized due to its harmful side effects, negative impact on our economy, and overall danger to society. The first reason marijuana should not be legalized is that it leads to numerous health concerns for the user and those around him or her.Marijuana will increase the heart rate by 20% to 100% after using it and this can lead to later heart problems. It also affects the lungs and because when smoking marijuana, one inhales more deeply and for a longer time than when smoking cigarettes, so the effect on the lungs is even worse (â€Å"Marijuana† screens 1-2). It can lead to coughing, pulmonary infections, and lung cancer, and marijuana also represses the immune system, which exposes the body to numerous diseases (â€Å"What are the medical dangers of marijuana use? † screens 1-2).Finally, marijuana is very unhealthy for the brain. According to the web page â€Å"Marijuana† written by the National Institute on Drug Abuse, marijuana causes one to have distorted perceptions, impaired coordination, and problems with learning and m emory. These results can last for multiple days. Other extreme mental diseases that smoking marijuana can cause are anxiety, depression, and schizophrenia (screen 1). Not only that, but marijuana can indeed be addictive which leads to further health problems (â€Å"What are the medical dangers of marijuana use? † screen 3).Many people, when arguing in favor for the legalization of marijuana, neglect the negative impact marijuana has on its user, which is an incredibly important part of the argument. Yet marijuana does not only negatively affect the user, it also presents many dangers for society. One of these dangers is all the health risks that come from secondhand smoke. The secondhand smoke of marijuana can cause all of the health problems that smoking it directly does. If children are around smoke from marijuana, it can cause asthma, ear infections, breathing problems, and it can stunt their mental and emotional development (â€Å"Effects of Smoking† par. -2). Anot her concern for the safety of society that marijuana presents is people driving under the influence. If marijuana were legalized, the amount of DUI’s would absolutely increase (â€Å"Arguments For and Against Legalizing Marijuana† screen 1). Currently if a person gets pulled over for driving under the influence, they’re in for â€Å"double trouble,† so to speak, because the officer could arrest them for, obviously, driving under the influence, but they could also arrest them for possessing marijuana since it is illegal.If marijuana is legalized, people will still be given DUI’s, but they won’t be worried about going to jail for possessing marijuana, which might lead to more DUI’s. Marijuana has so many dangerous outcomes on society, which is one more reason why it should not be legalized. Finally, marijuana truly would not have any positive outcomes on our country. Many people argue that if we legalize marijuana, we can put high taxes on it and improve our economy from it. However, marijuana is very easy to get from other sources, so why would people buy taxed marijuana when they can get along just fine with marijuana bought from other locations? DuPont par. 11). People can grow their own marijuana in their backyards, get some from friends, or even get it from another country. In addition, the legalization of marijuana could lead to people advocating for the legalization of other, more dangerous drugs, which would cause of plethora of new problems. In the end, legalizing marijuana would truly do no good for our society. In conclusion, legalizing marijuana would not help at all in our fight to prevent the abuse of this drug.Legalizing marijuana will lead to numerous health problems, will hurt the safety of all people, not just the users, and it will do no general good for society. In fact, legalizing marijuana will simply increase the number of users and abusers. An effective way for controlling our countryâ€⠄¢s use of marijuana would be creating more prevention awareness problems. Many people do not know the harmful effects of marijuana and if they did, the amount of people who use marijuana would most likely drop. We need to take action to educate people about the harmful effects of marijuana so that this issue oes become exacerbated in the future. Works Cited â€Å"Arguments For and Against Legalizing Marijuana. †Pros & Cons of Legalizing Marijuana. University of Missouri at St. Louis. Web. 11 Sept. 2012. DuPont, Dr. Robert L. â€Å"Why We Should Not Legalize Marijuana. †Marijuana & Money. CNBC. 20 Apr. 2010. Web. 11 Sept. 2012. â€Å"Effects of Smoking. †Diseases & Health Conditions. Livestrong. 2012. Web. 11 Sept. 2012. â€Å"Marijuana. †DrugFacts. National Institute on Drug Abuse. Nov. 2010. Web. 11 Sept. 2012. â€Å"What are the medical dangers of marijuana use? † Health Concerns. Harvard. Web. 11 Sept. 2012.

Free Essays on The Breaking Of Enigma

The Breaking of Enigma Enigma, as stated by the Merriam Webster Dictionary, is something obscure or hard to understand. Enigma, pertaining to DC Comics, is the true name of the Riddler, Batman’s most puzzling archrival. Enigma, to historians, is a German mechanical ciphering machine. This particular machine can be said to be one of the greatest secrets of World War II after the atom bomb. The Germans, during the war, crafted the ultimate coding machine called â€Å"Enigma.† The in-depth machine puzzled the opposing world by making their private messages unreadable by anyone beside themselves. The world seemed in the dark; or was it? The theory behind Enigma can be traced back for many centuries, even as early as the 4th Century BC by the Romans4. Even Thomas Jefferson had invented a ciphering machine consisting of numerous rings on the same shaft, which is similar to the design of Enigma. Arthur Scherbius patented Enigma in 1918 for businesses1. The German’s military later caught interest, and stopped commercial production in 1923 and it became for military use only4. Enigma basically functioned by a letter being pressed on a component similar to a typewriter, which would light up a corresponding letter on the lamp board. The main unit is made up of the keyboard, lamp board, and scrambler unit. The encoding process was done in the scrambler unit. The scrambler unit is fabricated by a number of rotors turning on an axis. The rotor had the numbers 1 through 26 marked on the edges. The ingenious machine was electrical, and quite simple. After a letter was typed, the rotors would move and send an electrical impulse to another letter on the lamp board. There were three main rotors, slow, medium, and fast. The fast rotor, the rotor to the right, would turn 1/26 of a turn each time a letter was pressed. After a full rotation from the fast rotor, the middle rotor, the medium rotor, wo... Free Essays on The Breaking Of Enigma Free Essays on The Breaking Of Enigma The Breaking of Enigma Enigma, as stated by the Merriam Webster Dictionary, is something obscure or hard to understand. Enigma, pertaining to DC Comics, is the true name of the Riddler, Batman’s most puzzling archrival. Enigma, to historians, is a German mechanical ciphering machine. This particular machine can be said to be one of the greatest secrets of World War II after the atom bomb. The Germans, during the war, crafted the ultimate coding machine called â€Å"Enigma.† The in-depth machine puzzled the opposing world by making their private messages unreadable by anyone beside themselves. The world seemed in the dark; or was it? The theory behind Enigma can be traced back for many centuries, even as early as the 4th Century BC by the Romans4. Even Thomas Jefferson had invented a ciphering machine consisting of numerous rings on the same shaft, which is similar to the design of Enigma. Arthur Scherbius patented Enigma in 1918 for businesses1. The German’s military later caught interest, and stopped commercial production in 1923 and it became for military use only4. Enigma basically functioned by a letter being pressed on a component similar to a typewriter, which would light up a corresponding letter on the lamp board. The main unit is made up of the keyboard, lamp board, and scrambler unit. The encoding process was done in the scrambler unit. The scrambler unit is fabricated by a number of rotors turning on an axis. The rotor had the numbers 1 through 26 marked on the edges. The ingenious machine was electrical, and quite simple. After a letter was typed, the rotors would move and send an electrical impulse to another letter on the lamp board. There were three main rotors, slow, medium, and fast. The fast rotor, the rotor to the right, would turn 1/26 of a turn each time a letter was pressed. After a full rotation from the fast rotor, the middle rotor, the medium rotor, wo...

Alexander Nevsky - Prince of Novgorod and Kiev

Alexander Nevsky - Prince of Novgorod and Kiev The son of an important Russian leader, Alexander Nevsky was elected prince of Novgorod on his own merits. He succeeded in driving invading Swedes from Russian territory and fending off the Teutonic Knights. However, he agreed to pay tribute to the Mongols rather than fight them, a decision for which he has been criticized.  Eventually, he became Grand Prince and worked to restore Russian prosperity and establish Russian sovereignty. After his death, Russia disintegrated into feudal principalities. Also Known As Prince of Novgorod and Kiev; Grand Prince of Vladimir; also spelled Aleksandr Nevski and, in Cyrillic, Ð Ã »Ã µÃ ºÃ' Ã °Ã ½Ã ´Ã'€ Ð Ã µÃ ²Ã' Ã ºÃ ¸Ã ¹ Alexander Nevsky was noted for Stopping the advance of the Swedes and the Teutonic Knights into Russia Occupations Roles in Society Military LeaderPrinceSaint Places of Residence and Influence Russia Important Dates Born:  c. 1220Victorious in battle on the ice:  April 5, 1242Died:  Nov. 14, 1263 Biography Prince of Novgorod and Kiev and Grand Prince of Vladimir, Alexander Nevsky is best known for stopping the advance of the Swedes and the Teutonic Knights into Russia. At the same time, he paid tribute to the Mongols instead of attempting to fight them off, a position that has been attacked as cowardly but which may have been simply a matter of understanding his limits. The son of Yaroslav II Vsevolodovich, grand prince of Vladimir and foremost Russian leader, Alexander was elected prince of Novgorod (primarily a military post) in 1236. In 1239 he married Alexandra, the daughter of the Prince of Polotsk. For some time the Novgorodians had moved into Finnish territory, which was controlled by the Swedes. To punish them for this encroachment and to bar Russias access to the sea, the Swedes invaded Russia in 1240. Alexander scored a significant victory against them at the confluence of the Rivers Izhora and Neva, whereby he got his honorific, Nevsky. However, several months later he was expelled from Novgorod for interfering in city affairs. Not long afterward, Pope Gregory IX began urging the Teutonic Knights to Christianize the Baltic region, even though there were Christians already there. In the face of this threat, Alexander was invited to return to Novgorod and, after several confrontations, he defeated the knights in a famous battle on the frozen channel between Lakes Chud and Pskov in April 1242. Alexander eventually stopped the eastward expansion of both the Swedes and Germans. But another serious problem prevailed in the east. Mongol armies were conquering portions of Russia, which was not politically unified. Alexanders father agreed to serve the new Mongol rulers, but he died in September 1246. This left the throne of the Grand Prince vacant, and both Alexander and his younger brother Andrew appealed to Khan Batu of the Mongol Golden Horde. Batu sent them to the Great Khan, who violated Russian custom by selecting Andrew as Grand Prince, probably because Alexander was favored by Batu, who was out of favor with the Great Khan. Alexander settled for being made the prince of Kiev. Andrew began to conspire with other Russian princes and western nations against the Mongol overlords. Alexander took the opportunity to denounce his brother to Batus son Sartak. Sartak sent an army to depose Andrew, and Alexander was installed as Grand Prince in his place. As Grand Prince, Alexander worked to restore Russian prosperity by building fortifications and churches and passing laws. He continued to control Novgorod through his son Vasily. This altered the tradition of rule from one based on a process of invitation to institutional sovereignty. In 1255 Novgorod expelled Vasily, and Alexander put together an army and got Vasily back on the throne. In 1257 a rebellion broke out in Novgorod in response to an impending census and taxation. Alexander helped forced the city to submit, probably fearing that the Mongols would punish all of Russia for Novgorods actions. More uprisings broke out in 1262 against the Muslim tax farmers of the Golden Horde, and Alexander succeeded in averting reprisals by journeying to Saray on the Volga and speaking to the Khan there. He also obtained an exemption for Russians from a draft. On the way home, Alexander Nevsky died in Gorodets. After his death, Russia disintegrated into feuding principalities but his son Daniel would found the house of Moscow, which would eventually reunite northern Russian lands. Alexander Nevsky was supported by the Russian Orthodox Church, which made him a saint in 1547.

Clinical reflection Essay Example | Topics and Well Written Essays - 250 words

Clinical reflection - Essay Example From the experience with the Chinese patient, I learnt how to communicate with a non-English speaker patient by use of sign language. I also learnt how to keenly monitor how he swallowed the fluid foods and put great care to turn the patient after every two hours. I also learnt more in listening to the lungs sounds very keenly. My friendliness to the patients never failed me. It made the patient feel at home and feel comfortable on my arms. I think I did great job by ensuring that the patient was comfortable all the times. I also did much by ensuring that the patient never dirtied himself with his excretes since he was unable to handle himself. Throughout the nursing period I ensured close contact with the patient. Today as I attended to the Chinese patient I felt I was very effective and caring to my patient. I went extra mile since the patient was dependent. I felt the pain as the patient swallowed the meals in great trouble. It was sad to see the patient being turned on bed every time. I felt the pain though proved much confident and never indicated any sign of

China Essay Example | Topics and Well Written Essays - 250 words

China - Essay Example Moreover, he also believed that everything in nature has two sides and that opposite sides complement each other i.e. the dialectical nature of things (Hansen, 2000). Therefore, Laozi emphasized on the fact that emptiness or nothingness is not emptiness or nothingness, but complements certain objects. Zhuangzi further emphasized on the issue of dialectic ism that was recognized by Laozi. He recognizes the nature as a movement, which has a different phenomenon in the world that is derived from and manifestations of nature (Hansen, 2000). In addition, Zhuangzi can be described as a renowned philosopher who praised human ambition, as well as imagination, which facilitated everyday thinking in order to understand how things interact in nature. Zhuangzi influenced the development of Daoism by emphasizing further on Laozi’s position on dialectic ism. By doing so, he introduced a new notion of self-transformation as the key precept in the Taoist process (Hansen, 2000). He also stated that it is essential to transcend all the dualities of existence. According to him, the way nature worked and reconciled the opposite sides showed how the Tao dualities were resolved in unity. On the other hand, Laozi influenced the development of Daoism by advocating for humility in leadership. He also promoted the development of anti-authoritarian movements that stressed on giving power to the weak (Hansen,

Black History Disputed Elections in American History Essay

Black History Disputed Elections in American History - Essay Example Nonetheless, some stand out as the ultimate mark of controversy and even legal dispute. With emphasis on electoral discrimination against the African Americans, this paper focuses on the disputed and controversial 1960 and 2004 elections. Despite the serious accusations concerning the 1960 elections, unanimity on the event among historians and experts does not exist. Indeed, most experts and historians tend to support both sides of the claim, but a closer analysis of the data and facts tend to disagree with the viewpoint. Despite the failure of the Republican Party to prove fraud in the elections does not necessarily mean that the election was clean. Despite all the efforts, the issue remains unsolved. Interestingly, the legend leaves out that multiple election boards did not consider overturning the election results, nor federal judges and a special prosecutor from Illinois. Furthermore, numerous academic inquiries concerning the Illinois case conclude that the evident fraud was not substantial enough to challenge the election results (Campbell 87). However, some level of fraud occurred in Cook County. Three people were incarcerated on election-related offences and more than 670 indicted and then acquitted by Judge Karns. Most of the allegations presented involved practices undetectable by a mere recount. According to an article on the issue, nobody clearly knew the winner of the election, and despite the claim by Kennedy that he had won the election, his father cautioned on the vote count in Cook County. Apparently, the close win by Kennedy over Nixon has been a long, contentious debate, with accusations of the former receiving assistance from his father’s mob connections, the powerful Chicago Mayor Daley, and Lyndon Johnson’s connections. In essence, there is no clear evidence that Nixon won both Illinois and Texas, which he had to in order to win the Electoral College Vote, but there was massive voter fraud on behalf of Kennedy in

Marketing Proposal Assignment Example | Topics and Well Written Essays - 500 words

Marketing Proposal - Assignment Example A good formal marketing plan will ensure the business moves forwards and makes profits since it understands the dynamics of the market (Hartline & Ferrell, 2010). The organization has been facing stiff competition in the market which has since been dominated by other players. Some of the company’s competitors include Queensland Wow Sight & Sound, Dick Smith Electronic, Woolworths Limited, David Jones Limited and Myer Holding Limited among others (Hanneley, 2010). Besides this, the macro environment, which may affect the organizational performance relates to economic conditions masking many companies to close their offices as well as many people not able to afford services and products of the company. Political unrest in some nations, cultural taste as well as government regulations may affect the sustainability of the company’s products in other markets. The company main competitive advantage is because of its online stores where clients can order from anywhere within their reach. This makes it possible for the company to contact their clients from wherever place they are hence giving them advantage over other companies. It also has a number of stores which are distributed all lover contributing to increased advantage in the local market. Additionally, it offers one stop shop where clients can get a wide range of products for their office as well as home use. The companies target market includes the real estate developers as the company has an interest in lighting system and electrical. The company targets office as it supplies office furniture, computers and other communication equipments. It targets home owners in the supply of small appliances, furniture, bedding, carpet among other things. In general, the company targets everyone who has room as it has the products and services needed in changing the look of the room by equipping and installing new features. The products to be introduced in the market will meet the customer’s expectation because the

Personal and Professional Development Essay Example | Topics and Well Written Essays - 2000 words - 1

Personal and Professional Development - Essay Example Based on my personality and self-assessment test result, a personal career action plan was presented in this report. Table of Contents Executive Summary ............................................................................................................... 2 Table of Contents ................................................................................................................... 3 1. Introduction ................................................................................................................ 4 2. Application of Theoretical Frameworks to Learning Experiences ............................ 5 2.1 Myers-Brigg’s Test ..................................................................................... 5 2.2 Johari’s Window ......................................................................................... 6 2.3 SWOT analysis ........................................................................................... 7 3. Career Action Pl an .................................................................................................... 7 4. Conclusion ................................................................................................................ ... ...................................................................... 16 Appendix IV – SWOT Analysis Framework ........................................................................ 17 1. Introduction The act of getting to know oneself is important in both personal and professional development. Basically, my future career goal is to become a successful and effective HR manager. To make my future career goal a reality, I take it as a challenge to continuously improve my leadership skills at all times. Managing people is one of the most difficult jobs a person can have. Aside from keeping each employee motivated at work, it is part of the HR managers’ responsibility to handle each corporate employee effectively. By doing so, the HR manager can help the company save a lot of time, money, and effort in training and retaining a large number of highly competitive employees (Jackson, Schuler and Werner, 2012, p. 194). A company is usually composed of a group of diverse empl oyees. The fact that each employee has a unique set of cultural background, religious beliefs, educational attainment, work attitude and behaviour makes the task of HR managers even more complicated than it seems. For this reason, I assume that there is a strong need for HR managers to further improve their leadership skills. Leadership is strongly relevant to my preferred professional career and development. By focusing on the need to improve my leadership skills, I will be able to strongly â€Å"influence, select, equip, and train† employees without the need to use strong force on them (Winston and Patterson, 2006, p. 7). Furthermore, I strongly believe that through the use of a strong charismatic technique, I could easily win the attention and support of each employee. This will make me able to

Leadership Assessment Essay Example | Topics and Well Written Essays - 1750 words - 1

Leadership Assessment - Essay Example Leader’s focus remains on the people and importantly on ways to inspire them to face new challenges and to perform in any state of affairs. Not to panic at any rate is the most indispensable quality of a leader. Every leader has the quality of maintaining the confidence level up and to assure followers that the whole thing is going to be fine. To be humorous and comical with the employees is an additional great quality that differentiates some leaders from others. According to a study, females have more leadership capabilities than males. Traditionally leadership tasks were associated with men only but over a period of time women are increasingly getting involved in the leadership jobs (Eagly & Johannesen?Schmidt, 2001). LEADERSHIP STYLE There are many styles of the leaders which are being followed but three major leadership styles are commonly used in organizations. These common leadership styles are as follows (Eagly, Johannesen-Schmidt, & Van Engen, 2003): Autocratic, also known as ‘authoritarian’ Participative also known as ‘democratic’ Delegative also known as ‘laissez-fair’ Authoritarian (Autocratic): Example of expression for the above style is, â€Å"I want both of you to. . ... . .† In this style, there is a leader and one or more employees are collectively involved in making of the decision (deciding what to do & how to do). This style is a mark of potency to work in a team and not a sign of weakness of leader. This authority is bring into play when knowledge or information of others employees can prove valuable contribution. By using this authority, a benefit of mutual understanding allows every other member of the organization to participate for the betterment of decisions (Sosik & Godshalk, 2000). Delegative (Laissez Faire): Example of expression for the above style is, , â€Å"You two take care of the problem while I go. . .† This style allows the employees to make their contribution and take decisions. The style is used when the employees have enough knowledge about the situation and know what to do and in what manner the work is to be done. Leader’s complete trust on the capability of employees and intentions to develop decision m aking capability in employees results in leader to adopt this style. Leaders increasingly use this style in the current professional world (Sosik & Godshalk, 2000). My manager in the current organization has adopted the combination of the three styles. The collective feature of all three defined style have had significant positive impact on my attitude towards works as well as entire organization. With participative decision making our managers enabled us to work in team and incorporating the best of suggestions for the task completion. This participative style adoption was ordered by leader using his autocratic powers. Hence, the manager enabled all employees including me to make decisions with responsibilities

Marketing Proposal Assignment Example | Topics and Well Written Essays - 500 words

Marketing Proposal - Assignment Example A good formal marketing plan will ensure the business moves forwards and makes profits since it understands the dynamics of the market (Hartline & Ferrell, 2010). The organization has been facing stiff competition in the market which has since been dominated by other players. Some of the company’s competitors include Queensland Wow Sight & Sound, Dick Smith Electronic, Woolworths Limited, David Jones Limited and Myer Holding Limited among others (Hanneley, 2010). Besides this, the macro environment, which may affect the organizational performance relates to economic conditions masking many companies to close their offices as well as many people not able to afford services and products of the company. Political unrest in some nations, cultural taste as well as government regulations may affect the sustainability of the company’s products in other markets. The company main competitive advantage is because of its online stores where clients can order from anywhere within their reach. This makes it possible for the company to contact their clients from wherever place they are hence giving them advantage over other companies. It also has a number of stores which are distributed all lover contributing to increased advantage in the local market. Additionally, it offers one stop shop where clients can get a wide range of products for their office as well as home use. The companies target market includes the real estate developers as the company has an interest in lighting system and electrical. The company targets office as it supplies office furniture, computers and other communication equipments. It targets home owners in the supply of small appliances, furniture, bedding, carpet among other things. In general, the company targets everyone who has room as it has the products and services needed in changing the look of the room by equipping and installing new features. The products to be introduced in the market will meet the customer’s expectation because the

Leadership Assessment Essay Example | Topics and Well Written Essays - 1750 words - 1

Leadership Assessment - Essay Example Leader’s focus remains on the people and importantly on ways to inspire them to face new challenges and to perform in any state of affairs. Not to panic at any rate is the most indispensable quality of a leader. Every leader has the quality of maintaining the confidence level up and to assure followers that the whole thing is going to be fine. To be humorous and comical with the employees is an additional great quality that differentiates some leaders from others. According to a study, females have more leadership capabilities than males. Traditionally leadership tasks were associated with men only but over a period of time women are increasingly getting involved in the leadership jobs (Eagly & Johannesen?Schmidt, 2001). LEADERSHIP STYLE There are many styles of the leaders which are being followed but three major leadership styles are commonly used in organizations. These common leadership styles are as follows (Eagly, Johannesen-Schmidt, & Van Engen, 2003): Autocratic, also known as ‘authoritarian’ Participative also known as ‘democratic’ Delegative also known as ‘laissez-fair’ Authoritarian (Autocratic): Example of expression for the above style is, â€Å"I want both of you to. . ... . .† In this style, there is a leader and one or more employees are collectively involved in making of the decision (deciding what to do & how to do). This style is a mark of potency to work in a team and not a sign of weakness of leader. This authority is bring into play when knowledge or information of others employees can prove valuable contribution. By using this authority, a benefit of mutual understanding allows every other member of the organization to participate for the betterment of decisions (Sosik & Godshalk, 2000). Delegative (Laissez Faire): Example of expression for the above style is, , â€Å"You two take care of the problem while I go. . .† This style allows the employees to make their contribution and take decisions. The style is used when the employees have enough knowledge about the situation and know what to do and in what manner the work is to be done. Leader’s complete trust on the capability of employees and intentions to develop decision m aking capability in employees results in leader to adopt this style. Leaders increasingly use this style in the current professional world (Sosik & Godshalk, 2000). My manager in the current organization has adopted the combination of the three styles. The collective feature of all three defined style have had significant positive impact on my attitude towards works as well as entire organization. With participative decision making our managers enabled us to work in team and incorporating the best of suggestions for the task completion. This participative style adoption was ordered by leader using his autocratic powers. Hence, the manager enabled all employees including me to make decisions with responsibilities

Distinktion Between British and American English Essay Example for Free

Distinktion Between British and American English Essay Abstract In this paper, distincion between British English and American English on the phonetic aspect will be discussed. The whole paper is going to be devided into several parts, in the first part various of English accents and the outline of the differences between these two variants of English will be introduced in biref ; In the second part, the representative of British English – Recerved pronunciation will be presented in detail on the aspect of sound system; in the thirt part, the phonetic peculiarities of American English will be discussed; in the last part, the sound system of British English and American English will be compaired in detail, thus the differences will be presented minutely. DIFFERENCE BETWEEN BRITHS ENGLISH AND AMERICAN ENGLISH ON THE ASPECT OF SOUND SYSTEM Outline: The fanous American author and humorist Mark Twain had said that :English and American are separate languages,..when I speak my native tongue in its utmost purity an Englishman cant understand me at all. (The stolen White Elephant) It is ture, we have already heard the concept of American English and British English when we started to learn this language, although we didnt know and cannot distinguish their differences at that time, we knew, at least, they are different. As an English majoring student, now I know they have distinctions in several aspects including vocabulary, pronunciation, spelling, intonation, etc. and it is my horner and pleasure to write on this theme: distinction between American English and British English on the phonetic aspect. Various accents: One thing which should be mentioned at the very begining is that, in fact,there are various accents in English, in general, linguistists devide  them into two groups: American varient of English and British variant of English, which can also be subdevided as in following graphic: Each of the above mentioned accents has their owen features thus different from each other, in this paper, not all these acctents are going to be discussed, only two representatives will be researched, they are the representative of American Enlish : General American English (GA), and the representative of British English: Received Pronunciation (RP), In general, one of the most siginificant parcularities of Brithish accent is it is cadenced, almost every sylable is pronounced clearly, long vowels and short vowels are distinguished obviously. However in American accent it is kind of ambiguous and vague, most of the long vowels are cutted short. For instance, the vowel a in class belongs to long vowel, British always pronounce it intactly, whereas Americans often enunciate it as a short one, it sound like a in the word bad. An other example can be the word aunt, almost all American pronouce it as ant with out expception, which makes it confusing whether they are reffering to their aunt or the ant creeping in front of their house. British accent invariably enunciate voiceless consonant in unstressed sylables clearly, yet Americans pronouce voiceless consonants as voiced ones, as a result, the word Battery was enunciated as Baddery by Americans. In most countries the English learning materials of schools use British standard English. The English channel of China Central Telivision as well as the dialogues between the spoke men of the Ministry of Foreign Affairs and foreing journalists use British English too. Among foreign meida, the accent used by BBC is considered to be acknowledged model of British English. Within Movie stars, Hugh Grant (acted the leading role in Four Wedding and a Funeral) graduated from Oxford University and speaks in standard upper class British accent.. RP: authentic British accent In China, there are various accents in different origins, among them mandarin is the officially stipulated as standard official language, however, although there are also various accents in different origins in Britain, there is no official stipulation on which is the standard one, but in the history of the development of English language, one accent formed its  importance and acknowledged to be the most stand British English, that is: Received Pronunciation, shorter form of which is RP. Retrospect its history, Received Pronunciation formed from an accent used in South Central England. That region extended toward southeast from Midlands to London, among which includes the two famous University towns Oxford and Cambridge. In the 14th century, Received Pronunciation was widely used among traders, and with the rise of Oxford and Cambridge University, this accent is also used by students of the two universities, thus, Received Pronunciation turned into the accent used by people who hav e received good education. From 19th to 20th century, Received Pronunciation became the education language use in British public schools, it was also used by British Broadcasting, and as a result, it is as well named as Public School English and BBC English. The concept of Received English was previously proposed by the English linguistic Daniel S. Jones in his monograph in 1918. To sum up, Received Pronunciation has the following general features: 1. Received Pronunciation is a kind of standard neutral accent, it is deemed to have no definite regional accent character. Whereas, in the British Isles, Received Pronunciation is only used in England, in addition it does not limit area. 2. Received Pronunciation has specific social demarcation. In Britain, RP is regarded as reflection of having received good education, that is, well educated. Hence, it is always connected with upper class of society, sometimes it is termed as Oxford English and King’s/Queen’s English. A coalmine worker frkm Welsh won’t understand and speak elegant Received Pronunciation. 3. Received Pronunciation is always closely bounded together with some particular professions. The main occupations use RP are: lawyers, politicians, diplomats, bond traders, teachers of universities or public schools, as well as announcers of national Broadcasting and Television studios. Evidently, those professions at the same time reflect ‘elegant’ and ‘distinguished’ social positions. What is worth mentioning is that as Received Pronunciation is standard orthodox British English, it is widely used in foreign language education. Therefore, the English learned by non-English first language countries is Received Pronunciation, the English pronounced by some of the excellent learners among them is even more normative than local British people. The principle character of RP is to protrude the sound ‘r’. When two words are connected together, if the  previous one ends with a non-high vowel while the second one starts with a vowel, the RP enunciation will add a non-existing r. By comparing the following two phrases we can see the peculiarities of RP: Regular enuciating situation (ending with a non-high vowel + starting with a consonant): The idea for it saw him in the room. Adding the non-existing r'(ending with a high vowel + starting with a vowel): The idea(r) of it, saw(r) it in the room. Peculiarities of American accent: 1. Abdominal pronunciation: When we listen to American people speak, it is noticeable that their timber is very abundant, the time of resonation sounds very long, even with strong nasal. In fact this is the first peculiarity of American accent abdominal pronunciation. The so called abdominal pronunciation refers to the habit of producing sound from the abdomen in American accent, which is very different in Chinese where the process of sound production is in the chest. More specifically, when we produce vowels, we need to draw in our bellies, then enunciate with vocal cord vibration, only in this way the produced vowels can sound resonant and full. If you want to practice most standard and pure American accent, you must form the habit of producing voice from the abdomen, pronounce with the back of vocal organs, this is the first thing we need to do. 2. Literally pronunciation: The second peculiarities of American accent is literally pronunciation, in general, they are pronounced just as they are spelled., enunciation is more regulated, which exactly match the peculiarity of English language as a kind of phonogram. For instance, the most significant distinction between American accent and British accent is the disposing of the retroflex consonant r. someone always finds it difficult to decide when should he/she roll his/her tongue and when not. It seems very complicated, in fact it is easy when you get it: in American accent, as long as there is letter r in the spelling, you should retroflex when you enunciate the word, on the contrary, if there is no letter r in the word, avoid rolling your tongue by all means. Therefore, we need to retroflex in words like letter, butter,  whereas in words like idea, China we mustn’t roll our tongue. Moreover, American English sounds different from British English mainly because in AE pronunciation tends to agree with spelling. For example, the word vase, according to the rule of ‘if there is a non-pronunced e at the end of the word, then the vowel of that word pronounce its letter sound’, British people pronounce it as [va:z], however, it is enunciated as [veiz] in American English. 3. The third peculiarity of American English is there is clear distinction between stressed and unstressed syllables. When we speak Kazakh and Chinese, every word can be stressed, so our tone sound constant and forceful, but when we speak AE, we have to get rid of this habit. The rhythm of AE comes from alternation of stressed and unstressed syllables, so if we want to make what we say rhythmist, we have to abbey the role of differentiating between stressed and unstressed syllables, also, we should pay attention to stressed syllables of words, firstly, we cannot shift stresses, then we should weaken the syllables without stresses, hence the word industry, the stress falls on the first syllable, but some people may have the habit of putting stress on the second syllable, this is a wrong habit, we must get rid of it. In order to make clear distinction between stressed and unstressed words or syllables, the most important thing to do is to weaken the unstressed syllables, once we can pronounce the unstressed syllables and words correctly, the stressed can be reflected out. Some general differences between American English and British English: 1. The resonance focus of American accent, i.e. where muscle moves most frequently, is on the back of mouth cavity between tongue and palate. That is the so called ‘pronounce rearwardly ’; in British accent the resonance focus is in front of teeth and between the lips, lips and facial muscles moves more frequently, which is so called ‘pronounced forwardly’. 2. In American accent the pitch changes between the syllables rather than within the syllables. There is no pitch glide within the syllables; however, in British accent, they try to emphasize the logically important words by gliding the pitch (The so called pitch glide is to lengthen the syllable and raise the pitch.). 3. There are 3 main vowels pronounce differently in British accent. /o/ in AE is two-stage-enunciation, while in BE a sound / ÊÅ' / is added before /əʊ/ which makes it a three-stage-enunciation. British /É’/  sound brief and powerful, lips glide fleetly, the degree of lip-rounding become smaller. Whereas when pronounce /É”:/ in BE, lips protract forward far away and bend into a round shape, leaving only a small opening. 4. Some sound in British English is different at times. When the sound /i:/ is at the end of a word (especially when spelled as y or ly ), it is weekend to /i/, for instance, in words like pretty, mostly. In American English, the syllables in the end with sound /sri/, /ori/ are always stressed, however, in British English those sounds are weekend to /É™ri/, and stresses are moved forward. For example in words like necessary, ordinary, category, the sound /à ¦/ in British English may change to /É‘:/ when it is in American English, In general, it would change under the following circumstances: * Before /f/, such as after, laugh, half, calf; * Before /s/, such as fast, last, rascal, repast, pass, glass (except for passenger, passage); * Before /th/, such as bath, path, rath, rather, lather (except for gather) * Before /nc/, /nk/ , such as dance, chancellor, lance, france; * Before /nt/, such as advantage, plant, chant, can’t; * Before /nd/ such as commander, demand, slander (except for and, hand, grand, stand) Irregular situations: the sound a does not change in bat, cat, can, changes in banana, example, sample, ranch, branch. Although the sound /u/ in American English might as well not change, but it is common to change to /ju/, for instance, duke, dual, due, neutral, nuclear, news, Tuesday, tune, tunic, lubricate, ludicrous, lunatic. 4. The letter r will drop when it is after a vowel, only when they are followed by another vowel. 6ï ¼Å½In American English sound t at the end of a word is incomplete plosive, while in British English it is complete plosive. 7. There are also a lot of irregular sound changes, for example: (American English→British English)

Seedling Production Of Mud Crab Scylla Serrata Biology Essay

Seedling Production Of Mud Crab Scylla Serrata Biology Essay Seedling production of mud crab Scylla serrata has the potential to be an effective tool to support the demand of mud crab due depleted seed stock from the wild. Moreover, there is high consumer demand on the global production of mud crab Scylla serrata from 1999 to 2000. Generally, consumer for mud crab Scylla serrata is Chinese communities which particularly at China, Vietnam, Singapore, Taiwan, Hong Kong and also Malaysia (Liong, 1993). Further, Malaysia aquaculture only practices a growth out of mud crab until the marketable size. Malaysia is currently in progress to develop mud crab industry by not relying on seed stock from Thailand. The crab production is relatively small about 650 tonnes per year (Liong, 1992). In Malaysia, not many studies have been done on mud crab culture. Studies on the larvae culture by Jamari (1992) shows that the high mortality of the megalopa and crablet stages cause by cannibalism among the larvae. Several studies of rearing mud crab larvae had been reported in Indonesia (Marjono and Arifin ,1993), Philippine (Quinitio, 1997) ,Vietnam (Hoang, 1999) and Japan ( Hamasaki,2002 ) that shows the high percentage of survival rate were 3.2 % , 3.7 % ,24 % and 30%-40%. However, the survival rate is still low ranged from 1% to 30% from zoea to megalopa. Current status In Malaysia, the production of mud crab has been decreased begin 1995 to 2005 (625 tonnes to 162 tonnes). However, the production of mud crab in other countries such as Indonesia, Philippines and china were increased significantly. Recently, the market demand for mud crabs has exceeded wild harvest. Mostly, mud crabs were imported from India, Sri Lanka, Indonesia and Bangladesh. The present improvised status of mud crab stock in Malaysia is also compounded by other factor. These included a recent increasing interest in soft-shell and growth out mud crab framing .In addition, more conventional culture method were invented such as compact crab farming system for growth out mud crab. Further, this new breeding system has been widely implemented by Perlis state community under the Perlis State Economic Development Corporation. In addition, the most factors that contribute interest to the mud crab culture is due to high demand and fetches a good price compare to other crabs species such as blue crab (Callinectes sapidus). During this time, the price has increased from RM 10.00/kg in 2009 to RM 30.00/kg in 2010 (Khalidah, 2009).It seem that the increasing of mud crab price has encourage many coastal fishing communities to initiate trials in floating cage, in specially designed earthen ponds and more recently in pen enclosures in mangrove forests. Other factor that contributed to increase of mud crab farming is the physical characteristic of mud crab itself which is high tolerance to both nitrate and ammonia. High tolerance is beneficial for mud crab culture due to ammonia is often the most limiting factor on closed aquaculture systems. Their high ammonia tolerance may be attributed to various unique physiological responses which may have arisen due to their habitat preferences (mangrove forest). However, the larval survival is low and need to further investigate using alternative approaches. The first studies of crab seed has been done in Malaysia since 1995 by the Inland Fisheries Branch, Department of Agriculture, Sarawak (Tan, 1997) but the survival rates of megalopa are low. Since there is still no commercial-scale hatchery production of S.serrata, all forms of mud crab culture depend on natural seed supply. Currently, we still do not have any mud crab stock enhancement in Malaysia such as habitat improvement and restocking. However, there are studies has been made by Kosuge(2001) in brief assessment of stock of mud crab Scylla sp. in Matang forest, Malaysia and proposal for resources management. He proposed to the management plan of Matang Mangrove forest by provided separate fishing restrictions area and other indirect effect and basis information for management of mud crab resources. Broodstock management Berried S.serrata female were caught in open sea by using Trawl net. The broodstock were migrated to the shore for their spawning. The broodstock are commonly scrubbed to remove mud, encrusting algae, infestations and detritus before introducing the wild broodstock into the hatchery. Selection of good quality of broodstock has been discussed by several researchers in term of captive spawning pattern, environment manipulation, fecundity, egg size, egg quality, nutritional status, broodstock husbandry and stress and microbial influence. Mating process occur when the female is in soft shelled state just after moulting .While the female in soft shelled, the male of S.serrata were inseminated to the female for mating(Phelan et al,2007). Maturing and spawning in S.serrata species for tropical country shows high incidences of maturation in females appear to be associated with seasonal rain fall. During the spawning, the female mud crab were migrates to the sea to spawn and release their planktotrophic larvae (Vay, 2001). Normally, the duration of eggs to hatch may take 30 to 40 days. Factor that contribute to hatching success are environmental control such as salinity, temperature and photoperiod. Normally, the broodstock were kept in salinity at range of 30-35 g/L for captive maturation and spawning of S.serrata in the hatchery (Mann et al., 1999).Salinity is a one of the factor that can stimulate the hatching rate of mud crab S.serrata. A high hatching rate (93.6 %) of mud crab at salinity of 35 ppt was reported by Rusli et al. (1994) when incubated at water temperature of 29-30 oC. This report also indicated low hatching rate achieved when incubated at salinity 20 ppt to 30 ppt which is hatching rate dropped to 65. 9%-69.6 % .Moreover, Salinity at 15 ppt were lowered the hatching rate (15.2%) and the larvae died within 4 hours after hatching. In the mud crab, egg incubation period is stimulated by temperature in the range of 25 oC and 35 oC. A shorts period of egg incubation of broodstock is 10 days were recorded by Hamasaki (2003) .The temperature were varied seasonally as the broodstock were incubated. Different season has different range of temperature and as increasing temperature in the ranges 20.3-30 oC, the egg incubation period were decreased from 30 day to 10 day. In addition, lower temperature in the range of 18- 22 °C (Mann et al., 1999) has higher hatch rate and larger egg. It seems that temperature can affect the period of egg incubation and hatch rate of mud crab S.serrata. In term of fecundity, mud crab at large size has high fecundity (7.98  ± 1.79 million eggs) with crab size between 146 and 181 mm carapace width (Churchill, 2003).To get a good quality egg ,many factors have been study to determine the egg quality of mud crab. Effect of colour egg and diet were observed by Churchill (2003) to determine a good egg quality. However, the egg colour varies at pale yellow, orange and orange red are not an indicator of egg quality due to indifference of hatch rate. In addition, there is no difference on female size and fecundity was reported on egg quality. Moreover, there have been few studies of diet for mud crab broodstock in effects on larval health and reproductive performance. Millamena et al. (2001) highlighted the importance diet feeding for mud crab broodstock on egg development and larval production. Three difference diets were tested (natural food (mussel and fish), mixed diet (natural food and formulated diet) and formulated diet), each diet is capable to improve maturing and spawning of broodstock mud crab S.serrata. However, Broodstock performance and larval quality were improved when fed with mixed diet. In all treatment, all zoea larvae were successful reared to megalopa when fed mixed diet and the female were ablated. In addition, High fecundity and total zoea were obtained when the female are performed eyes stalked ablation method. Low survival rate of larvae may occur due pathogen and disease from the broodstock. Broodsrtock mud crabs are usually infested with ectoparasite, fouling organism, fungal and bacteria. Leaňo (2002) identified two species of Haliphthoros, namely H. philippinensis and H. milfordensis .Normally, Haliphthoros spp. were founded among broodstock which aborted their eggs prior to hatching. They reported that H. milfordensis was pathogenic to spawned eggs of S.serrata and it was observed the infection rate of H. milfordensis is 2-5 % at two day after inoculation of zoospores with increasing infection rate ( reaching up to 10% ) at five days. While, H. philippinensis is not pathogenic to spawned eggs of S.serrata. Other research on the ectoparasite is Lagenidium. The parasites may infest the recently hatched zoea of mud crab and ended in mass mortality (Prastowo and Wagimsan, 1996) .According to Zafran et al. (1993), Lagenidium grew best at 35oC and tolerated temperatures from 20-40oC and pH from 4 to 11. Fungus can be killed by exposure to 10 ppm formalin for 24 hours and it safe for zoea compare to 20 ppm formalin for 5 hours. To improved survival rate of larval, research on control Lagenidium in mud crab larval rearing has been conducted by Zafran and Taufik (n.d) and Prastowo and Wagiman (1996). Five kinds of fungicide (treflan, malachite green, formalin, potassium permanganate and caltocyn) have been studied in controlling the fungus and their toxicity to mud crab larvae. The minimum effective concentrations of treflan, malachite, formalin and permanganate to inhibit zoospore production were 0.1 ppm, 0.2 ppm 14 ppm and 9 ppm. High survival rate and hatching rate were reported by Prastowo and Wagiman (1996).Healthy zoea were recorded when zoea where treated with mixtures of caltrocyn (1.3 ppm) and treflan (0.02 ppm) in combination with water exchanged at the rate of 50% every three days. Effect of antibiotics (Penicillin G and Polymixin-B) in feeding treatments (rotifers and Artemia nauplii) has been tested by Kasry (1986).From his experiment, Kasry (1986) found that higher larval survival (52.1 %) at zoea 5 were obtained when the larval fed with combination of antibiotics (35 ppt Penicillin G and 7 ppm Polymixin-B), rotifer and artemia at density of 15 individual per ml. Previous studies on the luminescent vibriosis were originally reported in culture shrimp (Penaeus vannamei larvae).It is also a devastating disease in crab larvae. The experiment on the vibrios to zoea of mud crab were reported by Parenrengi et al (1993).They conclude that V. catch, V. alginolyticus and V. Parahaemolyticus are pathogenic to zoea but considered moderate compared to V.harveyii (Boer et al. ,1993; Parenrengi et al.,1993). It seems that zoea is very sensitive to luminous bacteria and it may contribute to the high mortality during early larval stage. Larval rearing Several studies were done in various aspects such as feed, stocking density, feeding protocol, disease and cannibalism to improve the survival of mud crab larvae. Moreover, others species of crab such as Chinese mitten crab (Eriocheir sinensis) in China (Zhang et al. ,1998; Li et al. ,2001), and blue crab (Callinectes sapidus) in Chesapeake Bay (Secor et al. ,2002; Zmora et al. ,2005) has been successful culture at the hatchery scale. Studies on the hatchery scale larval cultures of mud crab were conducted extensively by Australia country begin 1992. Seed stock of mud crab in Australia is dependent on hatchery while the wild seed stock is banned under their management plan in order to control mud crab fisheries. Low survival of mud crab larvae cultures for zoea to megalopa were recorded by Quitino (2001), Fortes (1999) and Nguyen Co Thach (1997) and had survival rate of 10%, 25 % and 1.5% respectively. Feeding and nutrition During the growth and moulting of mud crab larvae, the larvae are going through 5 zoea stages from zoea 1 to zoea 5 and metaphases to megalopa and crablet (Phelan et al., 2007). The hatched larvae leads a planktonic life and when they moult to megalopa stage, they migrated to the estuarine area and grow into adult in estuaries as a benthic juveniles (Vay,2001) .Moreover, early zoea stage shows the digestive system is not well develop and lack of enzyme to support the process of breakdown of food particle (Kumlu, 1999). The early zoea is 1 mm long (Phelan et al., 2007) and occupied with forked tail. The forked tail of larvae is used to capture food and transfer to their mouth (Zeng et al., 1991). During the megalopa stage, the pincher are developed and this development can causes the increasing of cannibalism by grasping among the larvae as survival rate is low (1.55-8%) recorded by Quinitio et al. (2004). Effects of feed and feeding on growth and survival of mud crab larvae have been tested by  several researchers. Yunus (1992) and Wang (2005) found that a higher density of rotifer at 60 ind/mL and 40 ind/ml are required to attain higher survival rates. A study on early feeding has been tested by several researchers such as live Artemia, cryst Artemia, copepod and rotifer. They found that, the early larval stage (Z1 and Z2) were physically weak to search food comparing to Z3, Z4, Z5 and megalopa due to physically active searching food. Currently, survival rate during Z1 and Z2 were improved when larvae fed rotifer. Further, decapsulated cyst of Artemia were tested by Jerome et al. (2005) to improve survival larval at early stage but the result were reported poorly. It seem that a high mortality at Z1 and Z2 due to unsuitable diet size where the size of SS type rotifer (147 ±11  µm) is bigger than size of the mouth opening of Z1 (100  µm) (Setyadi et al. ,n.d). Instead of live feed, there is a development of microbound diets for larval culture of mud crab S.serrata. Currently, the research on the nutritional requirements of S.serrata is limited. May-halen et al. (2006) tested three different microbound diets (fish meal, dried rotifer and dried artemia).The survival rate of megalopa to crablet stage showing lower survival those fed microbound containing dries rotifer and dried Artemia compare to microbound containing fish meal or squid (46.7% to 60.0%). The highest survival of megalopa to crablet was fed live Artemia (80%).Other studies on microboud diet were tested from zoea 3 to zoea 5, a high survival rate and development rate at the zoea 3 to zoea 5 stage (66%) were recorded for larvae fed the 50%:50% combination of microbound diet and Artemia from his experiment .They concluded that the microbound diet particle has a great potential for both zoea and megalopa diet and it is cost-effective for seedling production of mud crab S.serrata. Another factor that contributes to mortality in mud crab larva culture is due to poor nutritional, especially in highly unsaturated fatty acids (HUFA) in live food and cannibalism among megalopa and crablet (Truong, 2008). A study conducted by Suprayudi (2004) showed that the effects of Artemia enriched with eicosapentaenoic and docosahexaenoic acid on survival and occurrence of molting failure in megalop larvae .The larvae were fed enriched Artemia with different type of oil. Enriched Artemia appears to be superior to unenriched Artemia. High survival of larvae can be maintained and accelerating intermolt by provided an optimum EPA and DHA at 0.71-0.87% and 0.49-0.72% for larvae feeding. Further, the finding result on the level of EPA and DHA for survival larval were supported by Mann et al. (2001) as his found there were no significant improvement in larval survival as the mud crab larvae fed enriched Artemia at the levels of EPA (39 mg/g) and DHA (15 mg/g) .Moreover , Mann et al. (2001) found that the phospholipid is one of the nutritional component need to study in effect of survival of mud crab larval .Currently ,there are no study on phospholipid in the diet of mud crab larvae. Another report by Suprayudi et al. (2002) where indicated that survival rate of S.serrata increase with the increase of the total (n-3) highly unsaturated fatty acid (ÃŽ £ (n-3) HUFA) content of rotifers. From his experiment, Suprayudi et al. (2002) found that the total (n-3) highly unsaturated fatty acid (ÃŽ £ (n-3) HUFA) in rotifer can be increase from 3-5 mg/g to 7.6-8 mg/g. In term of survival for each larval stage, Suprayudi et al.(2002) found that high mortality through the moult to megalopa to first crab were recorded after fed boosted rotifer at 31 mg/g ÃŽ £(n-3) HUFA. Other research on the boosted rotifer indicated that a high mortality at metamorphosis to megalopa with fed boosted rotifer containing ÃŽ £(n-3) HUFA levels above 6 mg/g(Hamasaki et al. ,2002 ) .It seem that the specific (n-3) HUFAs may be more important for growth mud crab of mud crab larvae To improve survival rate of zoea and larvae nutrition, Suprayudi et al. (2004) examined the effect of essential fatty acids (EFA) on the survival, development and bioconversion of fatty acids in mud crab S.serrata larvae. From his experiment, he found that the content of EFA in Artemia were strongly influenced the survival of mud crab larvae compared to rotifers. They found that EFA deficiency were reported at each larvae fed unenriched Artemia, enriched Artemia and enriched rotifer, indicating that DHA was superior to that of EPA. They conclude that mud crab larvae have a limited or negligible capability to convert C18 unsaturated fatty acids to highly unsaturated fatty acids. Disease of mud crab larvae Bacteria infestations are major problem for rearing larvae and contribute high mortality. Studies on the bacteria profile in rearing water with Scylla serrata larvae was noted high mortality from zoea 5 to megalopa due to the increase in luminescent bacterial load in the larvae (Quitino, 2001). Further, protozoa can contribute high mortality during egg and larval stages. This protozoon has an ability to interfere with gas exchange that blocked respiratory surfaces of the egg and larvae (Lavilla-Pitogo et al., 2004). Although these organisms do not invade the underlying tissues, they make it difficult for the affected larvae to move and to feed. Cannibalism Cannibalism behaviour of mud crab larvae indicated high mortality when metamorphosis from megalopa and crablet stage. Study by Juliana (1999) showed that high survival at crablet stage when reared with mud substrate and without shelter. Crablet were tested with different treatment such as coconut leave, mangrove twigs and mud substrate. In addition, asynchronous moulting of mud crab larvae is a one of the factor that contributed to the increased mortality during zoea 4 and zoea 5 (Quinitio, 2001). Water quality parameter The optimal condition in rearing mud crab larvae has been conducted in China, Vietnam, South Africa and Australia. Parameters that have been studies are temperature, salinity and total ammonia. The early larvae has a ability to tolerate with range temperature between 25 oC to 30 oC but shorten their development time when reared at a upper temperature ( 29-30 oC) (Dat ,1999; Li et al. ,1999; Quinitio et al. ,1999; Mann et al. ,2001; Quinitio et al. ,2001). In addition, the highest survival rate and growth rate were recorded when the larval reared at higher temperature ranged 28.5 oC to 31 oC and the minimum were recorded when the larval reared at low temperature ranged 22-24 oC (Marichamy, n.d). The optimal salinity for all larval stages larvae are 27 ppt to 31 ppt (Gui-Zhong, 2005).Other experiment on the optimal salinity for larval rearing was observed by Marichamy (n.d).From his experiment, he found that the optimal salinity for larvae rearing was 35 ppt with the highest production of larval and poor survival when reared at the lower salinity (32-33 ppt).However, high salinity at 36 ppt were not suitable for larval growth. To improve survival of zoea, Baylon (2001) were investigated the effect of salinity on survival and metamorphosis from zoea to Megalopa of the mud crab S.serrata. Each of larval stages (Z1, Z2, Z3, Z4, and Z5) of Scylla Serrata was tested with different salinity (12, 16, 20, 24, 28 and 32 ppt) and different salinity regime. In all treatment, highest metamorphosis to megalopa occurred where salinity was constant at 32 ppt. Further, there is no significant difference on the duration of development of the surviving larvae in all salinity regimes. Other factor that contributes to high mortality is ammonia. However, there is a few research has been conducted on the ammonia tolerance in mud crab larvae. Churchill (2003) tested concentrations of total ammonia ranged (NH3 and NH4 +) ranged from 25 ppm to 450 ppm at 25 ppm intervals. They concluded that S.serrata larvae are highly tolerated with high levels of nitrogenous waste. From the stress test ammonia, the optimum concentrations of total ammonia for zoea mud crab are 20 and 30 mg/l where the zoea activity was remained normal during total ammonia test. Currently, there is no research has been conducted on the tolerance of Scylla larvae to extremes in pH and oxygen concentration. Culture systems Attempt to develop techniques for mud crab (S.serrata larvae) culture system has been made since 1999. Most of the culture systems were adapted from culture shrimp (Penaeus vannamei larvae) system. Currently, there are three different culture system have been used in larvae rearing ranged from exchanged of water system, mesocosm system and green water culture system. To control water quality during the larvae rearing, exchanged of water were done by either a constant flow-through basis, or by draining or siphoning 50-85% of the tank volume daily and replacing it with clean seawater, or by recirculation a biofilter (100% every 2-3 hours) (Nghia et al. 2001).Under green water culture system ,the water were not exchanged for the first three day .Thereafter, water exchange is slowly increased from 10-20% per day for Z2-Z3 to between 40 and 50% per day at the end of the rearing cycle (Z4-M) (Mann et al. ,1999 ;Quinitio et al. ,2001). For the mass culture,mesocosm system has been used in Japan where the tank are partially filled with green-water at Z1 (20-25% volume. As the larvae metamorphosis to Z2 and Z3 stages, clean seawater were used instead of green water and the water exchanged on flow-through basis (Hamasaki et al., 2002) during the Z4 and M stages. To improve water quality on the bottom of tank, dead larvae and uneaten food that accumulate on the tank bottom are daily siphoned out of rearing vessels (Quinitio et al., 2001; Baylon and Failaman, 2001) and care must be taken to avoid siphoning out larvae which have sunk to the bottom of the container. Another problem during larvae rearing is a development of biofilm on tank sides .A high survival were achieved when the biofilm was removed daily (Williams et al., 1998).In addition, improper cleaning the biofilm can release large amounts of bacterial flock into the water column. Green water culture system is functioned by provide the larvae with microalgae such as Tetraselmis, Skeletonema, Chlorella, Nannochloropsis, Chaetoceros and Isochrysis at densities ranging from 5104 to 5105 cells/ml (Djunaidah, et al. ,1998; Dat ,1999; Mann et al. ,1999; Williams et al. ,1999; Zeng and Li ,1999; Mann et al. ,2001; Quinitio et al. ,2001) in order to increases survival and to serve as food for rotifers and Artemia. However, there is not scientific study on the effect of background algae on larval survival and growth of mud crab S.serrata. Basically, the mud crabs inhabit a turbid estuaries and it seems to require phase. However, there is no significant effect on survival between 12 and 18 hour photoperiods (Nghia et al. ,2001).Further, there is a experiment on the effect of tank colour (black, dark green, maroon, sky blue and white) on larval survival and development of mud crab Scylla serrata .From his experiment, Abed Golam et al.(2005) found that a higher survival and shorter development of zoea were recorded in darker colour background compare to white background .Moreover, the larvae where reared with black background have more efficient feeding as reduced settlement on the bottom of rearing tank. They concluded that background colour was significantly affecting larval survival.