India Shining Essay

It has been projected that by the year 2020, 62% of India’s population will be between the age group of 15 and 59 years. This is what is known as India’s demographic dividend. This means that while the average age of citizens in other countries is on the rise, a majority of India’s population will be in the employable age group. The question that arises here and one that has been on the minds of many Indians is; does the demographic dividend contain in it a ticking time bomb or will we be able to use this as an opportunity to realize our dream of India Shining? There has been a lot of talk about the opportunity divide in India. This Opportunity Divide is that by the year 2022, 800 million people will be in the working age group but out of these only 200 million will be graduates while the remaining will be in the unskilled group. According to research done by NSDC, between the year 2008 and 2022, 347 million jobs will be created across 22 different high growth sectors in India. For example, the jobs available in the construction industry will be about 33 million, in the auto industry about 35 million, in infrastructure 103 million and in retail about 14 million jobs will be available. The interesting fact here is that India will have both the jobs as well as a matching demographic of population that will have the potential to carry out these jobs. The question is will we be able to train so many people? The Indian government has set a target of training 500 million people by the year 2022, but is this target achievable? The target definitely is a daunting number. As an Indian I do hope that this dream is realized and am proud to be working for an organization that has done some exemplary work in this field. Pratham Institute has trained over 70,000 people through its various vocational training programs and is in the process of training more. I hope that people who come across this blog also find a way to contribute towards India’s future. Maybe then we’ll have the answer to the question raised by the title of this blog.

Gap Inc. in 2010: Is the Turnaround Strategy Working? Essay

Executive Summary Gap Inc. is facing the problem of decreasing sales in the family clothing store industry. Included in this paper is a detailed analysis of the family clothing store industry. This external analysis has showed that the industry is extremely competitive and difficult to make a profit due to low profit margins. The internal analysis of the company shows that although sales have decreased, Gap’s financial performance strengthens every year. Their profitability, leverage, and liquidity ratios have improved steadily every year which helps the company maintain a somewhat strong business situation. There are several possible alternatives for Gap Inc. to help increase sales and market share including maintain status quo, create new product lines and segment their target markets, and expand company operated stores in foreign markets which is the suggested course of action. Problem Statement The problem facing Gap Inc. is their decreasing sales and market share in the family clothing store industry due to the decreasing popularity of their clothing. Background and History Gap Inc. has several brands including The Gap, Old Navy, Banana Republic, Athleta, and Piperlime. Gap Inc. was founded in 1969 by Doris and Don Fisher. They started out selling clothing that targeted teenagers in San Francisco and expanded their clothing line to include active wear in 1970. The company went public in 1976. Gap Inc.’s clothing was popular in the 1990s and as their clothes were becoming popular and sales were increasing rapidly, so was their debt due to expansion. As their long-term debt increased, the quality of their clothing decreased. By 2000, their clothing style was not popular. The company had a few CEOs including Millar Drexler who was fired due to decreasing sales, Paul Pressler who resigned due to the company’s weak performance and he was replaced by Glen Murphy. Pressler’s turnaround strategy for Gap included reducing long-term debt. Murphy’s turnaround strategy was to expand business internationally and improve on the style and design of the clothing. PESTE Analysis Political Forces * Foreign governments; can cause delays or stall shipments by imposing new rules. * Better labour standards in foreign countries could cause an increase in textile prices. * The World Trade Organization. Another Multi-Fiber Arrangement could be imposed in the future. Economical Forces * Recession – consumers more cautious of prices * Interest rates will affect a store’s ability to afford loans for expansions * Exchange rates will affect costs to those companies that are importing textiles from foreign countries. Social Forces * Consumer’s tastes change frequently in the fashion industry. * Aging population – as the baby boomers age, their fashion needs will be different. * Obesity rates rising, demand for plus size clothing rising * Sweat shops/poor working conditions for employees of suppliers in foreign countries can cause bad publicity Technological Factors * The internet is becoming a popular way to sell merchandise. * New software and advancements in IT make it easier and more efficient for companies to track inventory and make the ordering process easier. Environmental Factors * People are more environmentally conscious and want to ensure companies are committed to green practices and are being socially responsible. * Clothing manufacturers can be creating a large amount of pollution due to their operations, especially if running a large plant. Porter’s Five Forces Threat of Rivalry Gap Inc.’s competition includes Abercrombie & Fitch, American Eagle Outfitters, Ross Stores, and several small local companies. The threat of rivalry is high due to: * Several competitors; thousands of small local and regional retailers. * No cost to buyers to switch brands. * Low profit margins; estimated to be only 3.4% in 2008. Threat of New Entrants The threat of new entrants is moderate to high due to: * Several possible new entrants, especially those operating specialty clothing stores. These include stores such as Reitmans who target women or H&M and Zara that target young adults. * Product differentiation and brand loyalty will make it more difficult to enter. Threat from Substitutes The threat from substitutes is high due to: * Several good substitutes are available such as: * Make your own clothes * Shop at specialty clothing stores * Buy second hand from flea markets, yard sales, or second hand stores * Department stores/big box retailers such as Sears or Wal-Mart. * No cost to buyers to switching to a substitute. * Prices are comparable or cheaper for substitutes and maintain quality Supplier Bargaining Power Supplier bargaining power is slightly higher than normal due to: * Limited supplies, potential for shortages * Products are differentiated in quality and style, however, could easily be duplicated by another supplier. * No cost to buyers to switch suppliers; however, may not be possible if there are shortages. Buyers Bargaining Power Buyers bargaining power are fairly high due to: * Low cost to switch suppliers * Products are differentiated in quality in style, however, could be easily duplicated. This increases buyers bargaining power. * Buyers are price sensitive – low profit margins and most of their purchases rely on third party suppliers from foreign countries. Overall, the family clothing store industry is not a very attractive industry. With all competitive forces being moderate to high, it would be very difficult for a new entrant to make a decent profit. Factors Driving Change * Entry of foreign companies * Regulatory influences and government policy changes. Regulations for importing textiles from foreign markets could cause an increase in prices for family clothing stores. * Changing social issues – increasing obesity rates * Changes in lifestyle – people becoming health conscious which affects their clothing needs. These factors driving change have the potential to decrease the demand for the family clothing store industry. As demand decreases, competition will become more intense. The combined impact of these factors could lead to lower industry profitability, especially if the companies cannot turnover inventory. Key Success Factors * Location * Brand loyalty * Keeping current with fashion trends These key success factors will determine how successful the companies in the family clothing industry are. Location is important because customers want to shop close to home. Companies must build brand loyalty to keep their customers coming back. Most importantly, if the company is not staying current with fashion trends, their customers will shop at a store that is offering the latest fashions.

Do we have any responsibility to a broader humanity Only to ourselves, Research Paper

Do we have any responsibility to a broader humanity Only to ourselves, family, community, or state - Research Paper Example It is in the context of this global village of a world that this paper examines the scope of responsibility of the individual. In the world of today, is our responsibility only towards ourselves, our families, our community or our state; or should our responsibilities, in whatever aspect of life it may be, be towards broader humanity? Responsibilities are related to various aspects and context of life. Responsibilities can be broadly classified into personal responsibilities, social and political responsibilities and responsibilities related to work or occupation. Personal responsibilities are those which an individual have to carry out for the self or for the immediate family or relatives. A person is responsible for his own good conduct, for the well being of her or his family –children, family partner, siblings, and relatives. It is not that personal responsibilities affect only the self, family or relatives of the person. By carrying out such responsibilities the person contributes towards the community and the state also, albeit indirectly. The orientation of the person entrusted with the responsibility is however limited and do not encompass the broader perspective. Social and political responsibilities are responsibilities that have wider ramifications. These responsibilities are beyond the self or the family and are more directly related to the community, society and the state. Each community or society has its own codes of responsibility which an individual is expected to adhere to. In doing so, the person contributes towards the perpetual sustenance of the community or the society. Similarly, each state has its own constitution, its codes of laws and rules. The constitution of any nation state provides the guidelines to the social and political rights and responsibilities of a person. It is in the case of social and political responsibilities that the perspective of the individual has undergone radical changes in the last decade

Cas study redbull Outline Example | Topics and Well Written Essays - 250 words

Cas study redbull - Outline Example re it takes brand protection very seriously and warns people against buying counterfeit goods since it is against government policies (Red Bull 2014, p. 1). Activities of various professional bodies, trade unions, pressure groups, and voluntary associations influence the market environment. For instance, the action of Morrison to ban the sale of high caffeine energy drinks to kids under 16years in the UK supermarket affected Red Bull since it also posed health fears over kids for having too much caffeine (BBC 2013, p. 1). Market classifications and competition standards influence the market environment and the level of competition in the industry. Monster offers great market competition to represents the Red Bull thus threatening its market share (Passport 2013, p. 6). Political stability affects the market environment as it defines the market conditions and political support on the industry (Team London Bridge 2011, p. 1). Subject to political stability in UK, Red Bull introduced the sugary drink in the country a decade ago and established permanent operations (Team London Bridge 2011, p. 1) and success (Arlidge 2004, p. 1). Government bureaucracy can also affect market environment by initiating customs or regulations to certain products. Indeed, lawmakers, Food, and Drug Administration in US are seeking to impose new restrictions in marketing Red Bull to children (Forbes 2013, p. 1). Market research derives significant market information that derives a better understanding of the market environment (FAO n.y, p. 1). Indeed, good market information helps entrepreneurs to make wise market decisions and establish effective market strategies (FAO n.y, p. 1). Planning also influences the success of a business in any market environment. For example, Red Bull adopted buzz marketing to create a brand image with a sporting culture to dominate the U.K soft drink market despite the eminent competition from established companies (Bized 2012, p. 1). Red Bull 2014, Brand

Ethics of Solar Laboratory,Hydro Power Laboratory and Wind Power Assignment

Ethics of Solar Laboratory,Hydro Power Laboratory and Wind Power Laboratory - Assignment Example In this regard, the general public and other concerned stakeholders are on a high alert on issues ascribed to ethic on the energy production sector. This discussion will focus on the three forms of energy generation, basically explicating ethical considerations on their production. In as much as there are few ethical issues raised in the field of solar energy production, one of the most evident ethical concerns in this field since the early 1990’s is the cost of production. According to the National Academy of Engineering, production of solar energy is relatively higher, especially when produced on a large scale (Durant, 2012). The high cost of production of this form of energy arises from the fact that the materials used to manufacture solar panels are quite expensive for instance: The National Academy of Engineering noted that most solar panels are manufactured using silicon as a photovoltaic material; silicon is quite expensive thus creating the need for another cheaper alternative photovoltaic material. In this regard, the Academy proposed a number of ways: The first strategy to lower the cost of solar energy generation is to use Cadmium Telluride as a photovoltaic material; this material is relatively cheaper than silicon (Durant, 2012). Moreover, the production of solar energy could also be made cheaper through encouraging mass production of solar energy. The other ethical issue ascribed to the production of solar energy is its impact of environment; environmentalists have asserted that solar energy is one of the best sources renewable energy owing to the fact that it does not pose any environmental threat that could affect nature and human life (Durant, 2012). Perhaps this is one of the reasons this kind of energy is currently gaining global recognition. There are various benefits associated with the use of wind power. One of these benefits is the fact that wind power is renewable and does not have significant negative impact on the

Marketing Report Assignment Example | Topics and Well Written Essays - 1500 words - 1

Marketing Report - Assignment Example McDonalds is one of the leading fast food producing organizations across the globe. The organization is quite popular in Bahrain due to its products of high quality and introduction of differentiated fast food products. Beef Burger has been produced by McDonalds in Bahrain. The organization has gained huge popularity among the people of Bahrain due to the high quality aspect of Beef burger. This assignment will discuss about several marketing and branding aspects of McDonalds regarding its mentioned Beef burger. McDonald’s is one of the largest and leading fast food producing organizations across the globe. The organization has effectively implemented global business expansion strategy in business operation process. Bahrain is another country in which McDonalds has successfully adopted and implemented global expansion strategy. McDonalds has implemented the combination of cost leadership and product differentiation strategy in business operation process. It is true that, each and every leading multinational organization has implemented unique business level strategies in business operation process in order to gain potential competitive advantages. Similarly, the management of McDonalds has adopted and implemented the combination of product differentiation and cost leadership strategy in Bahrain in order to gain potential competitive advantages over its competitors in Bahrain fast food market. Implementation of cost leadership business level strategy has helped McDonalds in Bahrain to reduce the business operation cost in order to offer products in economic price level. It is true that recent financial crisis and economic slowdown has affected the purchasing power of people. Therefore, the cost leadership strategy has helped the organization to support the purchasing power of people in Bahrain (Parameswaram , 2006, p.95). On the other hand, demand for differentiated fast food products among the people of Bahrain is increasing significantly. Introduction of Beef

Assignment 1 Example | Topics and Well Written Essays - 750 words - 1

1 - Assignment Example The private sector, on the other hand, is referred to as for-profit sector. These include businesses and institutions that offer goods and services for sale. Their main aim is to achieve profits in the sale of these products and services. This is quite different from the public sector that majors on service delivery not on a profit. It is through the revenue and taxes that the employees in the private sector fund the public sector. The private sector also through their corporate social responsibility programs help the community to develop. Non-for profit organizations are institutions that are not categorized in the public or private sectors and offers goods and services for free. In some situations, good corporate citizens donate to the public sector in an effort to give back to the community. In disaster situations, these groups are affected interdependently. For a case of a mudslide, the demand for public services is increased. Due to the increase in the demand of these services, the budget of the public sector is strained. Companies and businesses in the private sector are also interfered with due to the damage of the disaster. This results to less tax remittance since their services have been affected (Lyon & Hamlin, 2001). In worst cases scenarios, the staff at these businesses may lose their jobs on either a permanent or temporary basis. The tax remittances and contributions to non-profit organizations have to reduce since the businesses are not running as usual. In this type of scenario, the non-profit organization is faced with a decrease in contributions and sometimes an increase in demand of their services. Depending on the cruelty of the disaster and the strains on the local system, funds from outside of the resident community may be required to support the public in its salvage and go back to its normality. Question #2 Disaster and emergency management has had continual evolution through the years. There exists numerous career opportunities in this field since an individual can be employed in the private, public and non-profit sectors. It is a sophisticated field because it disaster affects any part of the community. This interrelationship between the sectors has affected the skills set for disaster and emergency managers. The careers range from the project managers on the ground to policy makers and executives in the office. Employment, therefore, in this field can be permanent or temporary since the disaster and emergency are not always happening (Haddow et al, 2011). An example of a full time employment is at FEMA. At FEMA, Permanent Full-Time (PFT) staffs are employed through a modest procedure that comprises an interview and application. Recruited employees can gain competitive status after one year of continuous service. Temporary employment at FEMA can be as Cadre of On-Call Response/Recovery Employees (CORE). These are employees hired to labour for a specific limited period. This is usually about two to four years. Em ployment is usually renewed if there is consistent disaster and funding for the program is available. These staffs can be employed under a rationalized method instead of a modest process. They are normally qualified for similar remunerations  as PFT personnel, but do not get modest career or status tenure during their period of employment. Other employment avenues are in the disaster management facilities or offices. These range from administrative, accounts, management to support staff who guarantee smooth running of the facilities.

Business communication Essay Example | Topics and Well Written Essays - 1500 words

Business communication - Essay Example Giving details of how effective messages can be created or directed. I have undertaken several different tasks and assignments in this course. Various oral presentations by using different techniques were done. Use of slides and presentation transcripts were also part of my study activities. Portfolios part comes with two different parts. Part A consists of article review and speech review. Different tasks were performed which improved my capacity and learning towards article and speech review furthermore part B involved self reaction and poster submission. I learned through a workshop that how effectively one can design posters and what should one consider in order to effectively conveying message through poster. The course started with the focus on history of business communication deriving it from different eras and also telling about different developments chronologically, such as the era before 1600 and so on. Furthermore a brief summary of history of communication was presented. We were then told about effectiveness of business communication, definition, need, importance and trends. Later different communication models were put up such as transactional, transformational and basic model. Furthermore barriers and flow of information in an organization were studied. Started with the topic behavioral protocols and ethical communication in which do’s and don’ts regarding how to be professional on jobs were told. Later four views of ethical behavior and their factors were discussed with further emphasis on how ethics in communication should work. Started with one of my favorite topic emotional intelligence and gender communication. In which IQ and emotional intelligence role and importance were explained. Further managing and developing of emotions were highlighted. Different strategies and models were also explained, such as nine strategies for promoting emotional intelligence and Mayer’s and

Native Americans (Subordinate Group) Essay Example for Free

Native Americans (Subordinate Group) Essay One often wonders where the Native North Americans originated from. Some theories have been discussed about the peopling of the Americas. Early theories involving lost tribes and continents were based purely on speculation instead of actual scientific facts. Discoveries made during many archeological expeditions have helped shape the always changing interpretations by adding more questions and more theories. There have been genetic and linguistic studies which raised more understanding and brought new questions. It is theorized that during the latter part of the Cenozoic era, also known as the age of mammals that the Wisconsin glaciation caused enough of the planet’s water supply to turn into ice. This lowered the oceans and exposed now submerged land. This event created a stretch of land that the large mammals of the Ice Age era, along with the natives of that era, could very well have migrated across the newly formed land bridge, which now connected two continents. This land bridge is known as the Bering Strait, or Beringia. During the time that Beringia existed, the Wisconsin glaciers most likely prohibited migration to any southern or eastern regions. Another theory suggests that the early natives may have inhabited the now Alaskan region because it was ice-free due to low precipitation. Several melts over a period of time created passageways, and evidence from archeological site implies that there was an ice-free corridor for thousands of years. It was during another melt approximately ten thousand years ago, that a second corridor was most likely formed farther east along the borders of Saskatchewan and Canada plains. This points to the possibility that the ancient people could have traveled eastward along the rivers in the Great Plains, and down further south. The Indians known to history as the Sioux are also known as Lakota, Dakota, and Nakota, meaning allies. This is my heritage. I am a member of the largest division of Siouan family, otherwise known as Sioux. The name is from a term given to the largest and well- known of the tribal groups. At one time, my people stretched from the west banks of the Mississippi northward from Arkansas and the Rocky Mountains. The Dakotas also inhabited territory east of the river up to Wisconsin and Missouri. They were here to encounter DeSoto on his journey in 1541, when he reached the Indian villages in what is now eastern Arkansas. Another hundred years passed before any mention of Sioux existing, when in 1658 some Jesuit missionaries heard of the existence of about thirty Dakota villages just north of a Potawatomi mission. This was located at about the head of Green Bay, Wisconsin, in St. Michael. It was during the middle 1600’s when the Sioux, along with the Arapaho and Cheyenne had to migrate further westward towards the Great Plains to what is known as North Dakota, Minnesota, and South Dakota. This migration was mainly due to the O jibwa and Chippewa tribes pushing them out of the Great Lakes region. The Ojibwa and Chippewa had been pushed out of their own land that had been further east, by the European settlers of that time. In 1805 Lewis and Clark passed through the center of this region and made contact with the Sioux tribes. After this took place, several more expeditions brought traders that settled among the tribes, and in the course of some time, permanent settlers arrived. This made the area so small that eventually the people of my tribe were forced to live in Indian Territories or confined to Nebraska, the Dakotas, or Montana. This brought on a series of raids and counter raids that lasted from roughly 1850 through 1890 and were known as the Sioux Wars. In the first years of the twentieth century, the Dakotas also known as Tetons began the process of adapting to their new way of life. They still had strong faith in their own traditions, but realized that the old way was gone forever. Numerous changes with the economy and politics were forced on my people by the government. The people strived to establish a life for themselves that used both new changes, but still remained true to their values and beliefs. During the rest of the twentieth century, all of the reservations for the Dakotas, Lakotas, and Tetons lost more land due to ownership passes and inheritances. Division between rural dwellers and people who live in town have grown bigger. Rural residents tend to retain their use of native language, and be involved in cultural events, when townspeople adapt other aspects of the American culture. Most of the Sioux nation and other groups of American Indians live in South Dakota, Oklahoma, New Mexico, and North Dakota at present time on privatized land created by the government many years ago. Wendy Coghill ETH/125 Text Citations: Bonvillain, Nancy. Seeking a New Way. Teton Sioux, Indians of North America, Heritage Edition. Philadelphia: Chelsea House Publishers, 2004. American Indian History Online. Facts On File, Inc. http://www. fofweb. com/activelink2. asp? ItemID=WE43iPin=INATS06SingleRecord=True (accessed May 22, 2011). Text Citations: Waldman, Carl. arrival of humans in North America. Atlas of the North American Indian, Third Edition. New York: Facts On File, Inc. , 2009. American Indian History Online. Facts On File, Inc. http://www. fofweb. com/activelink2. asp? ItemID=WE43iPin=ind5278SingleRecord=True (accessed May 22, 2011). Text Citation: Waldman, Carl. Assimilation. Word Dance: The Language of Native American Culture. New York: Facts On File, Inc. , 1994. American Indian History Online. Facts On File, Inc. http://www. fofweb. com/activelink2. asp? ItemID=WE43iPin=ind2991SingleRecord=True (accessed May 22, 2011). Text Citation: Waldman, Carl. Sioux. Encyclopedia of Native American Tribes, Third Edition. New York: Facts On File, Inc. , 2006. American Indian History Online. Facts On File, Inc. http://www. fofweb. com/activelink2. asp? ItemID=WE43iPin=ind2432SingleRecord=True (accessed May 22, 2011).

Comparison of Crime and Punishment and Julius Caesar Essay Example for Free

Comparison of Crime and Punishment and Julius Caesar Essay William Shakespeares famous play Julius Caesar written in 1608 is here compared with Crime and Punishment written by Fyodor Dostoyevsky in 1866. Whereby the two authors lived in completely different times, both texts had similarly established their storylines around protagonists who committed crimes based on theories they believed in. For example, Brutus from Julius Caesar commits murder because of his patriotism; while Raskolnikov commits murder with his belief in the à ¯Ã‚ ¿Ã‚ ½bermensch theory. This similarity has then brought further realization of similar depiction of protagonists between the authors. Such similarities are prevalent by the manner the protagonists conceal their emotions from interfering with their paths to greatness. This ultimately leads to each protagonists act of digging their own hole, whereby they alienate themselves from those they love. Hence this allowed for the ambiguous response from the audience, as we are shaped into the capability of hating and loving the protagonist from both texts. Thus, though these internationally-acclaimed texts were written by authors of different eras, a similarity exists in the fashion they have portrayed their protagonists. Primarily, both protagonists suppress their love for others in their search for greatness. The protagonist of Julius Caesar, Brutus, describes his suppression to his friends, not that I loved Caesar lessas he was ambitious, I slew him. There is tears for his love. (Shakespeare, 3.2.26-27) The first sentence of this quote affirms the protagonists inevitable love for his friend Caesar, whom Brutus paradoxically ends up murdering after emotional debates. Shakespeare has interestingly employed paradox in this quote to further corroborate Brutuss dominant characteristic of nobleness, when Brutus declares his true patriotic motives in murdering Caesar. Tears in the last sentence conveyed a sorrowful and regretful tone. This suggests Brutuss inner conflict, which is his attempt to suppress his affection toward his friend in order to kill Caesar. The protagonist of Crime and Punishment, Raskolnikov, also strives to suppress his compassion. Raskolnikov questions himself after helping a drunken girl, Is it for me to do that? And how could I ever have gone and given away those twenty copecks? (Dostoyevksy, 62) This quote demonstrates a sudden shift of mood, as Raskolnikov just shows his angelic side by helping others and now his demonic side takes over. These actions reflect the motif of dual personalities. The above three elements illustrate Raskolnikovs inner turmoil in suppressing his angelic side. Thus it is ironic that he exclaims he shouldnt have given away money, yet later gives money to Sonyas family. Raskolnikovs failure in suppression foreshadows his failure as a superhuman. Although both protagonists share the characteristic of suppressing their love for others, they suffer different consequences. In Julius Caesar, Brutuss suppression of love for Caesar isnt clearly interpreted by Antony, who tells all, how dearly Caesar lovd him (Brutus)! This was the most unkindest cut of allThenall of us fell down. (Shakespeare, 3.2.180, 181, 189) Antonys such realization reveals his shrewdness and true, open love to Caesar, in contrast to his foil, Brutuss, suppressed love. Ironically, Antonys manifestation of his love for Caesar foreshadows Brutuss tragic downfall. Through this, Shakespeare is able to criticize the suppression of emotions. In Crime and Punishment, the protagonist Raskolnikov has a better fate than Brutus. He confesses his crime to Sonya, who he had sought a human being, when he needed one. (Dostoyevsky, 621) This quote reveals the theme of common suffering and understanding. Raskolnikovs suppression of compassion has resulted in his physical and psychological suffering. As Sonya is also subject to poverty, Raskolnikov knows she may understand his torment and help him find salvation. In both texts, the authors depicted how protagonists are forced to suppress emotions for others despite the differences in the consequences of their actions. Theres no permission or prohibition involved (for the extraordinary people). he (the ordinary person) will suffer when he realizes the error of his ways Secondly, the protagonists both choose to abandon their families and isolate themselves. In Julius Caesar, Portia questions Brutuss behaviour, And when I askd you what the matter was, / You stard upon me with ungentle looks. / Yet I insisted, yet you answerd me not. (Shakespeare, 2.1. 241, 245) Through this quote, readers are introduced to the protagonists alienation of wife Portia due to his patriotism. Brutuss insistent isolation denies the motif of emotional weakness, which is possessed by his foil Caesar when Calpurnia persuades him to stay home. The sharp contrast between these characters illustrates Brutuss honourable and heroic characteristics. The theme of lack of communication proves to be a tragic fallacy for both Brutus and Portia. If theyd openly shared the problem, the tragic downfall of both characters mightve been avoided. The protagonist of Crime and Punishment, Raskolnikov, tells Sonya (Dostoyevsky, 291) that [He] deserted [his] family today, so [He] shant see them a nymore. This quote highlights the theme of isolation, caused by his belief in the à ¯Ã‚ ¿Ã‚ ½bermensch theory. Raskolnikov chooses to desert his family because of his superhuman pursuit. However, his speech often reflects irony. His deep trustful relationship with Sonya foreshadows his incapability of achieving the superhuman state. Furthermore, Raskolnikov shows strong concern when Svidrigailov, Raskolnikovs foil and a round antagonist, attempts to harm Dunya, his sister, in Part V of the novel. Contradictory to his words, Raskolnikov reveals the motif of psychological uncertainty, which is closely related to his punishment. In both novels, the protagonists have attempted to isolate themselves from their families to achieve greatness. However, they regard their family and friends differently. Brutus is accompanied by friends throughout the play. The flat character, Lucilius, aids with Brutuss escape by impersonating him (Shakespeare, 5.4.7-8). This loyalty affirms Brutuss well association with his friends and reveals Brutuss nobleness in the eyes of his countrymen. On the other hand, Raskolnikov takes the isolation to a higher level by deserting his friends. He tells Razumikhin, I dont needanyoneIll manage by myselfon my own (Dostoyevsky, 136) The use of ellipsis again depicts the motif of psychological uncertainty. Raskolnikov wants to isolate himself, but his stumbling speech portrays his doubts in his ability to alienate himself. Thus, its quite ironic that he eventually seeks help from Sonya, for redemption, and Razumikhin, for taking care of his family. Shakespeare and Dostoyevsky illustrate the theme of isolation as one of the major themes in their text which contribute to the protagonists tragic downfalls. Lastly, we find that Shakespeare and Dostoevsky use both good and evil qualities to characterize their protagonists. Through this, they are able to successfully provoke the readers empathy despite the characters misjudgements. In the final scene of Julius Caesar, Mark Antony makes a concluding remark about Brutus after he has died, This was the noblest Roman of them all:/[Brutus] only, in a general honest thought/And common good to all, made one of them./This was a man! (Shakespeare, 5.5.68-75) Here, Antony demonstrates his admiration and respect for Brutus even though he was part of the conspiracy. The irony is revealed when Antony compliments the murderer of Caesar as noble even though he had previously aroused the crowds against Brutus in Act III. Antonys shrewdness also reflects the motif of nobleness, demonstrated by Brutuss patriotic reason in committing the murder. Using iambic pentameter, Antony praises Brutuss nobility sincerely. His speech reminds the readers of Brutus unselfish sacrifice for his country, simultaneously provoking empathy, enabling readers to associate Brutus more as a hero than that of a sinful criminal. Whereas in Crime and Punishment, in Raskolnikovs confession to Sonya, he says, Id started to search my conscience and ask myself whether I had any right to assume power over someone else like that meant that I didnt have any such right(Dostoyevsky, 500) This quote from the climax of the novel reflects a milestone in the plot development. By admitting this mistake, that he had no right to commit the murder, is the protagonists first step towards redemption, a major theme of the novel. Also, the novel is written in a third person limited omniscient point of view, thus readers are able to feel Raskolnikovs sorrow and intense emotions in his confession. Readers cant help but sympathize with Raskolnikov and his psychological torment caused by belief in the Ubermensch theory his tragic fallacy. Although the protagonists in the texts, Brutus and Raskolnikov, are murderers, the reasons behind their crimes are different. Brutus contemplates whether or not to kill Caesar and finally decides, It must be by his death. And for my part/I know no personal cause to spurn at him/But for the general (Shakespeare, 2.1.10-13) This quote again illustrates the motif of nobleness. In this quote, Brutus reveals his patriotic and unselfish reason for murdering Caesar in order to benefit the greater good. Shakespeare skilfully employs iambic pentameters here to reveal Brutuss nobility and determination in committing such crime. This quote also helps with plot development as it foreshadows Caesars death. Raskolnikov on the other hand, also commits murder but he has his own intentions. Raskolnikov confesses to Sonya, I didnt kill in order to help my mother! I didnt kill in order get money or power and thus be able to become a benefactor of mankind. I simply killed for no one but myself what I needed to knowwas whether I was a louse or a man. (Dostoyevsky, 500) This quote signifies Raskolnikovs motive in committing murder was not based on utilitarianism but personal needs. The anaphora used for rejecting his previous justification of the crime reflects his self-realization. Pride is a motif in the novel. By admitting his misjudgement, Raskolnikov demonstrates his wounded pride. This highlights his psychological growth from the crime. By combining positive and negative characteristics, Shakespeare and Dostoevsky have successfully portrayed the protagonists like real people, possessing flaws and merits. Thus, in the end, both authors have created protagonists who attempt to achieve greatness yet face difficulty in terms of overcoming relationships with important characters in their lives. Such difficulty halt their paths to greatness as it forces Brutus to find motivation to kill Caesar; and as it brings Raskolnikov to realize his inability to follow the à ¯Ã‚ ¿Ã‚ ½bermensch theory for hes unable to overcome human compassion. However, both also fight their battles before realizing they were not meant for greatness; Brutus and Raskolnikov alienate their loved ones, but discover they cannot endure their absence. This portrayal of the protagonists illustrates how though their deeds are evil, they are still human and suffer as humans do thus earning our empathy where it was first nonexistent. In conclusion, therefore, with such similarities present in each protagonist throughout both stories of radically different timeframes, the authors William Shakespeare and Fyodor Dostoyevsky had evidently shared an ability to establish similar yet effectual protagonists; in this case, Shakespeare and Dostoyevsky with their distinctive great minds thought alike indeed. Bibliography Dostoevsky, Fyodor. Crime and Punishment. Trans. David McDuff. London: Penguin Books, 2003 Shakespeare, William. Julius Caesar. Ed. Roma Gill. Oxford: Oxford University Press,

Analysis of the Doppler Effect

Analysis of the Doppler Effect Assignment 3: topics and themes in physics- oscillations and waves Doppler radar A Doppler radar is specialized radar that uses the Doppler Effect to produce data about an objects velocity at a given distance. Doppler radar works by bouncing microwave signals at the desired target and then listening to its reflection, then the returning frequency is analysed to see how it has changed from the original signal. This variation gives direct and highly accurate measurements of the radial component of a targets velocity relative to the radar. The Doppler effect (or Doppler shift), named after the famed Austrian physicist Christian Doppler who proposed it in 1842 and is the difference between the observed frequency and the emitted frequency of a wave for an observer moving relative to the source of the waves. It is commonly heard when a vehicle sounding a siren approaches, passes and dulls from an observer perspective. When a wave with angular frequency ω and phase velocity c propagates in a medium, an observer moving with velocity v parallel to c experiences a shifted frequency ω1 = ω (1 − v/c) (1). They do not depend on the relative velocity as other circumstances do occur. Electromagnetic waves share with sound the same property which is propagation velocity. It is independent of the motion of the source . Einstein formulated his extended principle of relativity stated that all physical and electromagnetic forces should depend on relative velocities. From this he created Lorentz transformation. Sound vs. Light There are three differences between acoustical (sound) and optical (light) Doppler effects: The optical frequency change is not dependent on which is moving the source or observer either is it affected by the medium through which the waves are moving, but acoustical frequency is affected by these things. Optical frequency changes are affected if the source or observer moves at right angles to the line connecting the source and observer. Observed acoustical changes are not affected in such a situation. Applications of the Doppler phenomenon include the Doppler radar and the measurement by astronomers of the motion and direction of celestial bodies. Light itself travels at 186,000miles a second (, but unlike sound light doesn’t need to travel through a medium. Whereas sound cannot be transmitted into space light can be in the form of radiation and also a form of energy that is put through a vacuum. The Doppler effect of light is more commonly known as the relativistic Doppler Effect. The Doppler Effect In Astronomy In astronomy, the Doppler Effect was originally studied in the visible part of the electromagnetic spectrum. Today we can the see the use of the Doppler shift(Doppler effect) applies to all parts of the electromagnetic spectrum. Also, because of the inverse relationship between frequency and wavelength, we can describe the Doppler shift in terms of wavelength. Radiation is red shifted when its wavelength increases, and is blue shifted when its wavelength decreases. Astronomers use Doppler shifts to calculate very accurately at what rate stars and other astronomical objects are moving towards or away from Earth. For example the spectral lines emitted by hydrogen gas in distant galaxies is often observed to be considerably red shifted. The spectral line emission, normally found at a wavelength of 21 centimetres on Earth, might be observed at 21.1 centimetres instead. This 0.1 centimetre redshift would indicate that the gas is moving away from Earth at over 1,400 kilometres per second (over 880 miles per second). The red shift As an object moves further away from an observer the light waves emitted are affected by the Doppler Effect. In 1923, American astronomer and physicist Edwin Hubble (1889-1953) observed that the light waves from distant galaxies were shifted so much to the red end of the light spectrum that they must be moving away from the Milky Way, the galaxy in which Earth is located, at a high rate.(10) After these finding he then furthered his studies and came up with a mathematical formula in which he could determine how far away and at what rate they were moving away from the galaxy and how far towards the red shift. This formula is known as Hubble’s constant. From this a lot of other astronomers have come together and came up with the theory that the universe emerged instantly in a sort of bang, therefore coming amount the big bang theory. My research of galaxies the sun itself contains helium. This is proven as on the spectrum scale there are black lines in which the sun has absorbed light through the helium The Doppler Effect in aerospace Sonic booms, usually produced by airplanes passing through the sound barrier, are another example of the Doppler Effect. As a plane approaches the sound barrier the sound waves become increasingly compressed at the front of the plane. Pilots have also reported that they feel noticeable wall or barrier as they approach the speed of sound, and this is due to this intense compression of the sound waves. When the plane reaches the speed of sound, and passes through, it is said to go supersonic. There have been high speed photos taken of high velocity objects such as planes and bullets approaching, then breaking through the sound barrier. In these, the compression of the sound waves are clearly shown in the front, with the concomitant lengthening at the rear, just as would be expected by the Doppler Effect. Doppler Navigation System uses the Doppler effect to measure an aircrafts ground speed and heading. The Doppler radar functions by continuous measurement of Doppler shift and converting the measured values to groundspeed and drift angle. In early systems the aircrafts departure point was loaded into a navigation computer, which then converted the aircrafts heading and Doppler ground speed/drift inputs into a continuous display of aircraft position; this was then displayed as latitude and longitude, and/ or as distance to go along track and position left or right of track, in nautical miles. Aircraft navigation systems such as these are very important because they are key in getting the aircraft from one location to another safely. Doppler navigation is also one of the systems that air traffic controllers use, its allows then to see an aircraft’s exact heading, air speed and altitude. This allows the aircraft controller to give keep aircraft in clear and uncongested air which s ignificantly reduces the chances of in air collisions. DOPPLER RADAR The police also utilise the Doppler Effect in the form of Doppler radar to calculate the speed of passing car and to check whether they are obeying the speed limits. This technology is not only used by the police but also by meteorologists. The change in frequency experienced as a result of the Doppler effect is exactly twice the ratio between the velocity of the target (for instance, a speeding car) and the speed with which the radar pulse is directed toward the target. From this formula, it is possible to determine the velocity of the target when the frequency change and speed of radar propagation are known. The police officers Doppler radar performs these calculations; then all the officer has to do is pull over the speeder and write a ticket. The development in Doppler radar has also helped to helped to eliminate aviation crashes associated with microburst. A microburst is a very localized column of sinking air caused by a small and intense downdraft within a thunderstorm. The crash Delta Air Lines Flight 191 , which a microburst was the primary cause for the crash of the Lockheed L1011 Tri-Star was key factor in the push for developing microburst detection system. As a result of the crash, planes are now fitted with Doppler radar as standard. It allows pilots to prepare for microburst and allows then to increase power to the engines to stop the plane from crashing. The Doppler radar system of the plane is usually located in the planes ray dome. Meteorology Meteorologists use Doppler radar to track the movement of storm by detecting the direction and velocity of raindrops or hail, for instance, Doppler radar can be used to determine the motion of winds and, thus, to predict weather patterns that will follow in the next minutes or hours. But Doppler radar can do more than simply detect a storm in progress: Doppler technology also aids meteorologists by interpreting wind direction, as an indicator of incoming storms. Meteorologists use a similar principle to read weather events. In this case, the stationary transmitter is located in a weather station and the moving object being studied is a storm system. This is what happens: Radio waves are emitted from a weather station at very specific frequency. The waves are large enough to interact with clouds and other atmospheric objects. The waves strike objects and bounce back toward the station. If the clouds or precipitation are moving away from the station, the frequency of the waves reflected back decreases. If the clouds or precipitation are moving toward the station, the frequency of the waves reflected back increases. Computers in the radar electronically convert Doppler shift data about the reflected radio waves into more useful pictures which show wind speeds and direction. Doppler radars are also a lot more sensitive to movement of targets in general, whether they are moving towards or away from the radar site which things such as birds, insects, or just clouds when they are operated in certain modes. Doppler radars measure a targets velocity, which both is the speed of movement the direction that its moving. These types of radars allow meteorologists to see a lot of the in detail movements that go on inside thunderstorms, this then allows the meteorologists to predict how those thunderstorms will behave in the future. Doppler Echocardiogram A traditional echocardiogram uses sound waves to produce fairly accurate images of the heart. In this procedure, a radiologist uses a transducer to transmit and receive ultrasound waves, which are reflected when they reach the edge of two structures with different densities. The image produced by an echocardiogram shows the edges of heart structures, but the down side it cannot measure the speed of blood flow as it makes its way through the heart. In a Doppler echocardiogram, sound waves of a certain frequency are transmitted into the heart. The sound waves bounce off blood cells moving through the heart and blood vessels. The movement of these cells, either toward or away from the transmitted waves which then results in a frequency shift that can be measured. This helps cardiologists determine the speed and direction of blood flow in the heart which is the most significant difference between the traditional echocardiogram and a Doppler echocardiogram. Transverse and longitudinal waves A transverse wave is a moving wave that consists of oscillations occurring at right angles to the direction of energy transfer. If a transverse wave is moving in the positive x-direction, its oscillations are in up and down directions that lie in the y–z plane. For transverse waves in matter the displacement of the medium is at 90 degrees to the direction of propagation of the wave. A ripple in a pond and a wave on a string are easily visualized forms of transverse waves. Examples of transverse waves include S (secondary) waves, and the motion of the electric (E) and magnetic (M) fields in an electromagnetic plane wave, which both oscillate perpendicularly to each other as well as to the direction of energy transfer. Conclusion In conclusion this reports through my many hours of research, talks in detail about the history and the useful applications of it. Aircraft and aerospace engineering as they use Doppler radar is a very interesting and a wide range of applications and I have toughly enjoyed researching about it especially since these are topic areas which i am particularly interested and other practical uses with the speed guns used in the police force and also the sirens on the motor vehicles. The application of the Doppler Effect and its applications in aerospace are a very interesting subject and something which i very much look forward to looking and working on in am going into university.

The Prince and the Pauper :: Essays Papers

The Prince and the Pauper The three main ideas of this book are (1) two boys' wishes become true but later they don't enjoy it (2) Be careful what you wish for(3) Always think about what you're doing first. The two major characters were Tom Canty and Edward, the Prince of Wales. The conflict was between John Canty, Tom's father, and the prince. The other conflict was between Tom and the lords, servants, the King, and all the royal people in the castle. John Canty, the lords, the servants, the King, and all the royal people in the castle opposed Tom and Edward. Tom and Edward opposed them also. The characters deal with the situation that they find themselves in by telling the truth. They never stopped telling everyone one who they really were. They insisted saying that there were not who everyone really thought they were. Everyone thought Tom and Edward were both mad. The reason why no one believed them is because they both looked alike and they both had exchanged outfits. They exchanged outfits because Edward wanted to feel how it was to be a pauper and how to live like one and Tom wanted to feel how it was to be a prince, the son of the King, and how to live like one. First Tom was enjoying it because he didn't have to beg anymore, he ate good food, and he slept in a nice, cozy bed in the King's palace, but later he didn't enjoy it because he wanted to go back home to his original family and live the way he used to live. The Prince of Wales, son of the King, Edward was then living like a Pauper. He was treated badly and never ate anything at all. He was beaten by John Canty, Tom's father and was always forced to beg. Tom's mom tried to stop John but John and Tom’s sisters watched in just slapped her horror. Edward didn't even enjoy being a pauper at least once. Everyone just thought that Tom and Edward were both mad. They solved the confusion, though. After the King had died and Tom was about to be crowned King of England Edward ran in and said that he was the true King.

Effects Of Deforestation :: essays research papers

Effects of Deforestation The subject of deforestation and the effects that it has on the environment have been heavily debated for a long time; particularly over the last few years. Governments and large lumber companies see large profits in the mass deforestation of forests and state that their actions are having few, if any, harmful effects on the environment. Most people disagree with this and think that the environmental effects are devastating and will become irreversibly disastrous in the very near future. Whether or not the pros outweigh the cons will be hotly debated for years to come but the fact is that deforestation is harmful to the environment and leads to declining wildlife populations, drastic changes in climate and loss of soil. The loss of forests means the loss of habitats for many species. Current statistics show that as many as 100 species become extinct every day with a large portion being attributed to deforestation (Delfgaauw, 1996). "Edge effects" are the destruction or degradation of natural habitat that occur on the fringes of fragmented forests. The effects for the animals include greater exposure to the elements (wind, rain etc†¦), other non-forest animals and humans (Dunbar, 1993). This unnatural extinction of species endangers the world's food supply, threatens many human resources and has profound implications for biological diversity. Another negative environmental impact of deforestation is that it causes climate changes all over the world. As we learned in elementary school, plant life is essential to life on earth as it produces much of the oxygen that is required for humans and other organisms to breathe. The massive destruction of trees negatively effects the quantity and quality of the air we breathe which has direct repercussions on the quantity and quality of life among both humans and animals alike. With this reduced amount of vital plant life comes the increase of carbon dioxide levels in the earth's atmosphere. With these increased levels of CO-2 come unnatural changes in weather patterns both locally and globally. "The removal of forests would cause rainfall to decline more than 26%. The average temperature of soil will rise and a decline of 30% in the amount of moisture will evaporate into the atmosphere" (Delfgaauw, 1996). This leads to the global warming phenomenon which is also directly related to the declining amounts of forest areas on the earth. Soil erosion caused by deforestation is also a major concern among even the most amateur environmentalists: "When rain falls, some may sink to the ground, some may run off the surface of the land, and flowing down towards the rivers and some may evaporate.

Concern Over Electromagnetic Fields Health And Social Care Essay

Our usage of electricity on a day-to-day footing is now taken for granted in Britain. We live and work surrounded by an of all time increasing array of electrical power public-service corporations, yet over a decennary ago concern over electromagnetic Fieldss ( EMFs ) exploded after Paul Brodeur wrote a series of articles in the New Yorker Magazine in June 1989. Because of Paul Brodeur ‘s repute his articles had a catalytic consequence on scientists, newsmans and concerned people throughout the universe, taking in November 1989 to the Department of Energy coverage that â€Å" It has now become by and large accepted that there are, so, biological effects due to field exposure. † Prior to the commercial handiness of manmade electricity, worlds were exposed to merely natural EMF forces, viz. the magnetic field of the Earth, electric Fieldss caused by charges in the clouds, sudden electric and magnetic Fieldss caused by buoy uping or by the inactive electricity of two objects rubbing together. The last century has seen Britain become progressively surrounded by semisynthetic EMF. In our society, where the usage of electricity is extended, exposure to EMF from the huge array of electrical contraptions and equipment, constructing wiring, distribution lines, and transmittal lines is common and for sustained periods of clip. There has been considerable research carried out on assorted facets of EMF and it ‘s consequence on human wellness, top outing with the Californian Department of Health bring forthing an EMF survey bing over $ 7Million and 8 old ages to finish. EMF frights have generated survey after survey and sparked a demand for a modern set of statute law and directives for employers climaxing in the drafting of a European directive. I work in the Power Utilities Sector on Power Generation Plant. Does EMF present a echt day-to-day wellness hazard to me? Against the context of the abstract and background in this papers. Working in the power public-service corporations industry within the electrical, instrumentality and control field, this possible injury is of both involvement and significance to me. I feel hence this topic should turn out both motivation and educational to reexamine. The information and decisions will finally be used for personal development and presentation of personal competency. Each reappraisal article must run into the following standards to be considered for reappraisal: Be a research article or study Primary or Secondary Research Contain Research Methodologies where possible.5. Search FootingsThe undermentioned initial hunt footings have been drafted to supply a footing to bring forth this critical literature reappraisal: EMF, EMF Exposure, EMF Health, EMF Safety, EMF Human Health, EMF biological, EMF malignant neoplastic disease, Electro Magnetic Health, Electromagnetic Adverse Health, Electromagnetic Fields Human Health4. Literature ReappraisalPulling initial ideas on the construction and research paradigm this reappraisal will take are that with my EIC background and industry cognition it would be unlogical that the research worker and the investigated are wholly divorced. I am and will be influenced by my experience and old interactions with electrical theory and experimentation when reexamining EMF literature. This cognition suggests a positivism attack utilizing an Epistemic stance necessitating the apprehender and the known to be independent is dismissed. All research requires a starting point and for this subject the most suitable attack to utilize is the Interpretivist attack utilizing an Epistemology stance. The apprehender and the known influence each other ; ( Lincoln & A ; Guba, 1985 ) There have been a big figure of surveies into the factor EMF exposure may play in the wellness and unwellness of populations referred to in medical nomenclature as Epidemiology ; the basis of public wellness research. Meta-analyses and other more complete reappraisals of leukemia and encephalon malignant neoplastic disease are summarised in this reappraisal with peculiar attending to exposure assessment methodological analysiss utilised by these surveies. Breast malignant neoplastic disease ( see Reference 1 for reappraisal ) and non-cancer results such as Alzheimer ‘s disease ( 2, 3 ) , amyotrophic sidelong induration ( ALS ) ( 4,5 ) and cardiovascular disease ( 6,7 ) have non been sufficiently studied, but face similar challenges in footings of exposure appraisal. These surveies are non considered any farther in this paper. One of the four known basic natural forces, EMF is defined as â€Å" The cardinal force that is associated with electric and magnetic Fieldss and is responsible for atomic construction, chemical reactions, the attractive and abhorrent forces associated with electrical charge and magnetic attraction, and all other electromagnetic phenomena. It is carried by the photon. † ( English Dictionary, 2009 ) In 1992 S.Richardson published ‘Occupational Risk Factors for Acute Leukaemia: A Case-Control Study ‘ in the International Journal of Epidemiology vol 21. This Journal is a equal reappraisal papers which gives grounds there is a procedure of self-regulation by a profession or a procedure of rating affecting qualified persons with this related field giving an early feel of research credibleness to research farther. Although no formal statements are made as to the writer ‘s certificates, the publication is written by members of the International Committee of Epidemiology and so an premise can be drawn that he is both qualified and respected in this field being portion of an elective commission. The survey uses a quantative methodological analysis, clearly saying his aims, variables, case-controls and informations aggregation methods, utilizing a questionnaire and a standard interview format to roll up statistical informations. As the rubric suggests the research metho d is a corporate instance survey, utilizing chemical and toxin exposures aswell as EMF to look into the phenomena of AL. The information collected and it ‘s trust on human remembrance will necessarily hold some defects and this human fallibility factor with the modified experimental factor utilizing instance controls and blind analysis to better on past contradictions, suggests a Postpositivism attack. The information does back up the belief that EMF is an occupational factor for acute leukemia. A really similar method to this is described by the writer ( M.Gerin et al 1985 ) for obtaining occupational exposure histories and is celebrated as a sucessful theoretical account by ( Inter-rate understanding in measuring occupational exposure in a case-control survey, Goldberg M et Al 1986 ) nevertheless it is earlier acknowledged ‘that however a questionnaire merely provides a foster step of exposure with possible misclassifications which cut down the power of the survey to observe a difference in the exposure of instances and controls ‘ ( Kleinbaum D Lifetime larning 1982 ) . ‘Risk of Cancer among Danish Utility Workers – A Nationwide Cohort Study ‘ ( C. Johansen 1998 ) was one of the largest representative research surveies, conducted by Christoffer Johansen who is the MD of the Institute of Cancer Epidemiology, Danish Cancer Society. The writer appears good respected and extremely qualified in his field of expertness keeping both PhD and DMSc awards. The survey informations is for 32,006 employees of 99 Danish public-service corporation companies covering both private and province owned installings. C.Johansen uses an intrinsic instance survey to supply a greater apprehension of power public-service corporation occupational exposure compared to the general public malignant neoplastic disease degrees.4. DecisionsEpidemiologic probe of possible associations of EMF exposure with hazard of chronic disease is an remarkably hard endeavor. Certain decisions can be drawn nevertheless: a ) The epidemiologic surveies conducted on possible wellness effects of EMF have improved over clip in edification of exposure appraisal and in methodological analysis. Several of the recent surveies on childhood leukemia and on occupational exposures in relation to grownup malignant neoplastic disease are near to the bound of what can realistically be achieved by epidemiology, in footings of size of survey and methodological asperity, utilizing soon available measuring methods. B ) Exposure measuring is a peculiar trouble of EMF epidemiology, in several respects: aˆ? The exposure of involvement is unperceivable, omnipresent, originates from multiple beginnings, and can change greatly over clip and over comparatively short distances. aˆ? The relevant exposure period, for malignant neoplastic diseases at least, is before the day of the month at which measurings can realistically be obtained and is of unknown continuance and initiation period. aˆ? The appropriate exposure metric is unknown, and there is no substantiated biological mechanism or carnal theoretical account from which to ascribe it. degree Celsius ) In the absence of grounds from cellular or carnal surveies, and given the methodological uncertainnesss and in many instances incompatibilities of the bing epidemiologic literature, there is no chronic disease result for which an aetiologic relation to EMF exposure can be regarded as established. vitamin D ) A big organic structure of high-quality informations exists, with measurings of exposure, strong methodological analysis, and big survey sizes, for childhood leukemia and encephalon tumors and for occupational exposure in relation to adult leukemia and encephalon tumors. Among all the results evaluated in epidemiologic surveies of EMF, childhood leukemia in relation to postpartum exposures above 0.4 I?T is the 1 for which there is most grounds of an association. The comparative hazard has been estimated at 2.0 ( 95 % assurance bounds ( CL ) = 1.27-3.13 ) in a big pooled analysis. This is improbable to be due to opportunity but may be partially due to bias. This is hard to construe in the absence of a known mechanism or consistent experimental support. In the big pooled analysis, merely 0.8 % of all kids were exposed above 0.4 I?T. Further surveies need to be designed to prove specific hypotheses such as facets of choice prejudice or exposure. On the footing of epidemiolog ic findings, there is grounds for an association of ALS with occupational EMF exposure although confounding is a possible account. Whether there are associations with chest malignant neoplastic disease, cardiovascular disease, and self-destruction and depression remains unsolved. Overall, despite 20 old ages of extended epidemiologic probe of the relation of EMF to hazard of chronic disease, there are still epidemiologic inquiries that need to be resolved. To be of value, nevertheless, future surveies of these inquiries must be of high methodological quality, of sufficient size and with sufficient Numberss of extremely exposed topics, and must include appropriate exposure groups and sophisticated exposure appraisal. Particularly for childhood leukemia, small is to be gained from farther repeat of probe of hazards at moderate and low exposure degrees, unless such surveies can be designed to prove specific hypotheses, such as choice prejudice or facets of exposure non antecedently cap tured. In add-on there is a demand for surveies in worlds of possible physiological effects of EMF that might associate to hazards of chronic disease.

Insomnia and Its Causes

Insomnia is a symptom, not a stand-alone diagnosis or a disease. By definition, insomnia is† difficulty initiating or maintaining sleep, or both†or the perception of poor quality sleep. It is also a common sleep problem that can affect your quality of life. Poeple with insomnia have trouble falling asleep or staying asleep. They wake up during the night or wake up too early next morning. Insomnia may therefore be due to inadequate quality sleep. Insomnia is not defined by a specific number of hours of sleep that one gets, since individuals vary widely in their sleep needs and practices.Although most of us know what insomnia is and how we feel and perform after one or more sleepless nights, few seek medical advice. Many people remain unaware of the behavioral and medical options available to treat insomnia. Insomnia is generally classified based on the duration of the problem. These are the transcient, short-term and chronic insomnia. Insomnia affects all age groups. Among adults, insomnia affects women more often than men. The incidence tends to increase with age.It is typically more common in people in lower socioeconomic (income) groups, chronic alcoholics, and mental health patients. Stress most commonly triggers short-term or acute insomnia. If you do not address your insomnia, however, it may develop into chronic insomnia. Some surveys have shown that 30% to 35% of Americans reported difficulty falling asleep during the previous year and about 10% reported problems with long standing insomnia. There also seems to be an association between depression, anxiety and insomnia.Although the nature of this association is unknown, people with depression or anxiety were significantly more likely to develop insomnia. Insomnia may be caused by a host of different reasons. These causes may be divided into situational factors, medical or psychiatric conditions or primary sleep problems. Insomnia could also be classified by the duration of the symptoms into t ransient insomnia generally last less than seven days; short-term insomnia usually lasts for about one to three weeks, and chronic insomnia lasts for more than three weeks as mentioned earlier.The various causes of insomnia are elaborated in the paragraphs below. Many of the causes of the causes of transient and short-term insomnia are similar and they include: jet lag, changes in shift work, excessive or unpleasant noise, comfortable room temperature(too hot or too cold),stressful situations in life(exam preparation, loss of a loved one ,unemployment ,divorce ,or separation),presence of an acute medical or surgical illness or hospitalization and withdrawal from drug, alcohol, sedative, or stimulant medications.Also insomnia related to high altitude (mountains), uncontrolled physical Symptoms (pain, fever, breathing problems, nasal congestions, cough, diarrhea, etc. ) can also cause someone to have insomnia. Controlling these symptoms and their underlying causes may lead to resoluti on of insomnia. Furthermore, majority of the causes of chronic or long-term insomnia are usually linked to an underlying psychiatric or physiologic (medical) condition. Again, the most common psychological problems that may lead insomnia include:anxiety,depression,stress(mental,emotional,situational,etc. ,schizophrenia,and/or mania(bipolar disorder). Nevertheless, insomnia may be an indicator of depression. Many people will have insomnia during the acute phases of a mental illness. As mentioned earlier, depression and anxiety are strongly associated with insomnia. Out of all the other secondary medical and psychological causes of insomnia, anxiety and depression are the most common. Also, physiological causes span from circadian rhythm disorders (disturbances of the biological clock), sleep-wake imbalance, to a variety of medical conditions.The following are the most common medical conditions that trigger insomnia: chronic pain syndromes, chronic fatigue syndrome, congestive heart f ailure, night time angina(chest pain)from heart disease, acid reflux disease(GERD),Chronic Obstructive Pulmonary disease(COPD) and nocturnal asthma(asthma with night time breathing symptoms). Others include: obstructive sleep apnea, degenerated disease, such as Parkinson’s disease and Alzheimer’s disease(often insomnia is the deciding factor for nursing home placement. and brain tumors, strokes, or trauma to the brain. In addition to people with the above medical conditions, certain groups may be at higher risk for developing insomnia: travelers, shift workers with frequent changing of shifts, seniors, adolescents or young adult’s students, pregnant women, women in menopause, people who use abuse drugs and alcoholics. Another area worth mentioning is the medication related to insomnia. Certain medications have also been associated with insomnia.Among these are: certain over-the-counter cold and asthma preparations, the prescription varieties of these medications may also contain stimulants and thus produce similar effects on sleep, some medications used to treat high blood pressure have also been associated with poor sleep and some medications used to treat depression, anxiety and schizophrenia. Other causes of insomnia are common stimulants associated with poor sleep include caffeine and nicotine. You should consider not only restricting caffeine and nicotine use in the hours immediately before bedtime but limiting your total daily intake.Also, people often use alcohol to help induce sleep, as a nightcap. However, it is a poor choice. Alcohol is associated with sleep disruption and creates a sense of non-refreshed sleep in the morning. Lastly, a disruptive bed partner with loud snoring or periodic leg movements also may impair your ability to get a good night’s sleep. In spite of the above stated points doctors associate a variety of signs and symptoms with insomnia. Often, the symptoms intertwine with those of other medical or men tal conditions.They are: some people with insomnia may complain of difficulty falling asleep or waking up frequently during the night. The problem may begin with stress. Then, as you begin to associate the bed with your inability to sleep, the problem may become chronic. Also most often daytime symptoms will bring people to seek medical attention. Daytime problems caused by insomnia include the following: poor concentration and focus, difficulty with memory, impaired motor coordination (being uncoordinated), irritability and impaired social interaction and motor vehicle accidents because of fatigued, sleep-deprived drivers.Other symptoms may include: having trouble falling asleep, waking up during the night and having trouble going back to sleep, waking up too early in the morning, feeling tired when they wake up(like didn’t get enough sleep) and feeling grouchy, sleep, or anxious and be unable to get things done during the daytime. People may worsen these daytime symptoms by their own attempts to treat the symptoms; alcohol and antihistamines may compound the problems with sleep deprivation. Others have also tried non prescription sleep aids.Many people with insomnia do not complain of daytime sleepiness, and in fact, they may have difficulty falling asleep during intentional daytime naps. In diagnosing insomnia, the health practitioner will begin an evaluation of insomnia with a complete medical history. As with most medical examinations; a complete medical history and physical examination are import aspects of assessment and treatment of insomnia. The health care practitioner will seek to identify any medical or psychological illness that may be contributing to the patient’s insomnia.A thorough medical history and examination including screening for psychiatric disorders and drug and alcohol use is paramount in evaluation of a patient with sleep problems. Physical examination may particularly focus on heart and lung examination, and measuremen t of size of the neck and visualizing oral and nasal air passages(to see whether sleep apnea needs to be assessed in more detail). Treatment for insomnia focuses on the reason why you don’t sleep well. In general, transient insomnia resolves when the underlying trigger is removed or corrected.Most people seek medical attention when their insomnia becomes chronic. The main focus of treatment for insomnia should be directed towards finding the cause. Once a cause is identified, it is important to manage and control the underlying problem, as this alone may eliminate the insomnia without addressing the main cause is rarely successful. If you have a medical problem, such as stress, treating that problem may help you sleep better. You may be able to sleep better by making some small changes.It may help to: go to bed at the same time each night, get up at the same time each day, avoid caffeine and alcohol for several hours before bedtime, get regular exercise (but make sure you fin ish the exercise at least 3 to 4 hours before you go to bed) and avoid daytime naps. Some people may need medicine for a while to help them fall asleep. Doctors often prescribe medicine for a short time if other treatment isn’t working. But medicine doesn’t work as well over time as lifestyle and behavior changes do. Sleep medicine can also become habit-forming.Medicine works best as a short-term treatment combined with lifestyle and behavior changes. Your doctor may also recommend counseling, which can help you learn new habits that may help you sleep better. Talk to your doctor about your sleep problems and any other health issues you may have. This is important, because lack of sleep can lead to depression, accidents, and problems at work, marital and social problems, drinking more alcohol than usual and poor health. Treatment may help you avoid these problems and feel better. Generally, treatment of insomnia entails both non-pharmacologic (non-medical) and pharmaco logic (medical) aspects.It is best to tailor treatment for individual patient based on the potential cause. Studies have shown that combining medical and non-medical treatments typically is more successful in treating insomnia than either one alone. In a nutshell, I would advise that if you have insomnia caused by jet lag, your symptoms will generally clear up within a few days. If you are depressed and have had insomnia for many months, it is unlikely that your symptoms will go away on their own. Your outcome will also depend on coexisting medical conditions, which may include congestive heart ailure, chronic obstructive pulmonary diseases (COPD), and chronic pain syndromes. Synonyms and keywords Sleeplessness, stress, anxiety, depression, sleepless, chronic insomnia, acute insomnia, mental illness, sleep habits, insomniac, insomnia, difficulty sleeping, sleep, disorders that disrupt sleep, difficulty falling asleep, primary insomnia, sleep test, obstructive sleep apnea, insomnia m edications, daytime sleepiness, melatonin, jet lag, shift change. Authors and Editors Author: Siamak T. Nabili(2010),MD,MPH Editor: Melissa Conrad Stoppler, MD Reference: eMedicine. Com. Insomnia. http://emedicine. edscape. com/article/1187829-overview Previous contributing authors and editors: Author: Mary E. Cataletto, MD, Associate Director, Division of Pediatric Pulmonology, Winthrop University Hospital; Associate Professor, Department of Clinical Pediatrics, State University of New York at Stony Brook, et al. Other works consulted: * Littner M, et al. (2003). Practice parameters for using polysomnography to evaluate insomnia: An update. Sleep, 26(6):754-760. * Ropper AH, Samuels MA (2009). Sleep and its abnormalities. In Adams and Victor’s principles of Neurology, 9th ed. , pp. 374-396. New York: McGraw-Hill.

Media Law Privacy: A study on its impact on journalists in HK

Great Britain was a powerful empire back in the days. It boasted of large areas of lands she colonized and conquered – with territories ranging from the Americas to the Far East and the pacific. For so many years England has conquered these territories and left a considerable influence on their cultures, such as newspapers and the media. Two of the best examples of these territories would be Hong Kong in the Far East and Australia in the pacific.IntroductionThese two countries were once the colony of the most powerful country back then the British Empire. But now as the time would have it, the two were given their independence by Britain, Australia in 1939 and Hong Kong’s turnover to the Chinese Government in 1997. Now you may ask, what is the significance of the past activities of these two countries in relation to their media laws? Let’s look on how www.asiawind.com describes the difference. First, both have considerable influences from Britain in the freedom o f expression, the media for example, and the other laws that go by it. Second, the turnover to two different cultures sets the difference for their journalism and media laws. The second reason will be discussed in detail in the next few paragraphs.When Britain handed over Hong Kong to china in 1997, the pre-colonial journalism style was different. Journalists were given full access to whatever news they can go into, in short full independence on the freedom of speech. The post colonial journalists now have a dilemma in their hands. With the pre colonial freedom that they’ve enjoyed now partly gone, its almost impossible for them to write something which may be of raging influence or may be detrimental to many authorities or the mainland politicians will call as propaganda against them.   It would then be taken to assumption that there had been evidences with regard to invasion of their privacy or political plans (Workshop).Media Law in Hong KongIn a survey taken from the si te of Media Law as adhered to by the government, such is evident that disclosing private issues if will not be detrimental to ones health or safety or for a person’s well-being, its better to let the persons concerned or organizations know.   Given such standpoint, in this case I think the Chinese Central Party will disagree with me. Considering the fact that any leak into the private affairs of the big bosses’ there and may be in fact, be detrimental to their   health if the media will get their hands on it (â€Å"Inmedia†).Most of the news that go against the tide of the mainland politicians will either be ignored or a big possibility will not be published at all by China News Agency, the news agency that is controlled by the Chinese Mainland communist party. The above mentioned is indeed a big difference on the media styles, laws and certain freedoms that are practiced back in the days of the British Empire controlling Hong Kong.   Certain news whether be beneficial to the communist party could either be not published for the sake of secrecy laws that are imposed by the communist party. Hence, Secrecy laws which are based from the interests of the ruling party in Mainland China.Hong Kong media as seen from the eyes of its neighboring countries and the world reflect somewhat a negative view. Media in Hong Kong is the under the repressive arms of the Chinese mainland. The journalists in Hong Kong have to bear with the overly protective policies of the mainland. But the repression that the journalists go through in Hong Kong puts them in a somewhat feisty approach towards expressing their views and puts them in a delicate political situation. In terms of expression, the privacy laws and policies that the mainland imposes indirectly on to the journalist’s possess a different view and approach to a media that others may think is in dire need of air from an already tight squeeze from the mainland’s hands.However, media in Hong Kong still give some respect to the big bosses in the mainland. Prior to the turnover in 1997, the central party was used to the distinctively quiet atmosphere of the media there. Now as the feisty and active reporters of Hong Kong are becoming often aggressive in bringing out the truth, in reference to Taiwan, they do still maintain a high level of respect for the state’s privacy laws in expressing views over the issue.Media Laws in AustraliaThe media laws of Australia on the other hand, propose and show a different approach to how the state allows its journalist to practice their crafts. State laws passed by the House of Commons states that it allows journalists to practice under such media regulations, freedom of speech and other policies that follow governing laws. In terms of privacy, the state does allow journalists certain protocols in regard to privacy ((OLDP)).Take for example, state provisions that allow foreign nationals to take certain control of certain perc entages of media institutions.   It does in a way grant private or corporate individuals to express the freedom of speech. The freedom must be exercised according to state laws and specifically, privacy related. The state itself does value the freedom to exercise that right but it has to coincide with certain ethics just to make sure that no privacy issue will be exposed that may be detrimental to one’s or an organizations well being.True that such freedom exercised in Australia has pointed out and brought great deal of scandals and corruptions hiding within the bureaucracy. If we look at the past, the Australian press has served their country well. Corruptions and misbehaviors from both the private sector and the government have been brought up by investigative journalists in response to needs of the people to know what is going on and their mission to bring out press freedom to a higher level of information dissemination.  Ã‚   As a matter of fact, this sort of freedom allows investigative reporters to practice press freedom to a much higher extent. But certain details have to be polished first before any publication gets out exposing such private issues which investigative journalists may deem necessary to let the public know.Complications in PressCertain hindrances may affect Australian press’ freedom. Take for example, the Trade Practices Act, which in a much broader sense is likely to be violated with the inclusion of press and cross- media ownership puts the credibility of Australian press on the line. With a lot of publications competing for sales in the Australian market. With various highly unlikely that the freedom may be jeopardize as more publications may go a bit extreme to bring out privacy related issues in the news for the sake of creating a stable share in the market (Smartt).Moreover, the degrading factor that some laws come in a variation of issues that rise in the field of obscenity, regional censorship and the other medi a restraints imposed by the laws crafted by the legislating individuals.   Aside from that it had been noted that consequently, one of the most striking deprivation of Press Freedom are the extent of regulations falling on the surface of morality.   This then stresses the standpoint that there had been certain instances wherein the Media advocates believe that the skill they have acquired for the pursuance of such projects in disseminating information to the contemporary society is stringed on the desires of those who are in office (Tugendhat and Christie).ConclusionIn conclusion, I believe with all these facts brought up the privacy issues of the press between Hong Kong and Australia. In my view Australian journalists enjoy a more subtle freedom in expressing their views in relation to private issues as compared to Hong Kong’s journalist who experiences a tight grip when it comes to details in press freedom. Culture differences, I also believe play a vital role in defini ng media privacy issues between these two countries’ journalists.   The arena of media may be not of that which entails absolute freedom as well as with the point of divulging on the creativity of the aforementioned individuals.   Thus, issues on privacy which were sought to be degrading in a form of nuisance and surveillance, is a point of fact that democracy is not well established in the society of today.References:(OLDP), Office of Legislative Drafting and Publishing. â€Å"Australian Communications and Media Authority Act 2005.† ComLaw – Federal Register of Legislative Instruments, 2005.â€Å"Inmedia.† IDEA 2007, 2007.Smartt, Ursula. Media Law for Journalists. Sage Publications Ltd 2006.Tugendhat, Michael, and Iain Christie. The Law of Privacy and the Media: First Cumulative Updating Supplement. Oxford University Press, USA, 2004.Workshop, New Media. â€Å"Hong Kong–Inmedia.† University of Hong Kong ‘s Journalism and Media Stu dies Centre, 2007.

Letter Assignment Draft

The cell is the biological basic unit to life .Every existing animal or plant owes its life to the cell. Cells cannot be seen with naked eyes but with the help of equipment called the microscope.   It is the environment that surrounds different, other existences that are in many ways autonomous, merely, independent but also as well as dependant of each other; oop! Let’s avoid the contradiction and go through this basic† Life The entire body of humans is made up of cells-very different many cells- In fact millions and millions of them each with a distinct purpose. It is important for an official of health for instance to understand some, if not all of these cells. [1] The nucleus; the whole make-up of the cell, every single function and set-up is â€Å"coded for† or dictated by this system.   Amazingly the system uses a diverse nature in the name of genes.   Depending on species each individual has a different number of them (genes), each responsible for a different nature or set up; loading to the formation of a specific cell structure/organelle. As a senior health officer, the understanding about genes is of help in solving problems such as DNA tests. To some extent, such an understanding on genes is also essential in ascertaining and analyzing blood samples before transfusion takes place. The Mitochondria is the energy power.   For every single process there is the energy required.   The source of this energy is the mitochondria.   This organelle breaks down the food through its myriad set of enzymes and packs the product, energy, as pockets of potential power.   Power that will in times of need be converted to Kinetic energy in motion/activity. The endoplasmic reticulum.   Some rough, some smooth.   The rough has the ribosomes, hair like structures in the formation of proteins.   Proteins that make-up the other structural cell existence.   These proteins will also be used in repair of worn out parts of the cell.   Simply; the whole cell has a protein make-up.   The smooth endoplasmic reticulum; they are involved in lipid fats and ions transport. Heavy convoluted branched throughout the cell they leep the cell well stacked in the lipid supply. The Golgi apparatus; they pack processed proteins. Packaging them ready for delivery via the cell and settings them to wherever they are required. [2] Then there are the assembly units in the form of tiny microscopic cylinders called the ribosomes. These are units that form/ manufacture proteins from simple forms (raw materials) in the form of amino acids. These ribosomes are hinged on the endoplasmic reticulum. They give it the appearance of a rugged structure hence the name rough endoplasmic reticulum The lysozymes are a set of enzymatic organelles. They break-down/ digest complex material that has been ingested by the cell. The ingestion of food particles is done by the micropinocytatic vesicle; it engulfs or surrounds a â€Å"palatable substance† and practically makes it â€Å"part of the cell† The lysozymes later on leak the enzymatic content, which digests the engulfed particle. The cell has a sound and dependable character. Integrity. The above unit structures can and will be found in a living cell. [3] The distinction however is slight depending on whether it is a plant or animal cell; 1. The cell membrane is common to plant and animal cells, aquering the organelles; into a defined environment. Acting as the skin 2. The plant cell however has the additional protection of a cell wall. A â€Å"skin† covers to the outermost. This affords plants the rigid nature. The plant cell also has other unit structures like;- a.Chloroplasts; responsible for the trapping of light rays and channeling this energy to the manufacture of food. They give plants that distinction color. b.Food vacuole; the food store in plant cells. c.The water vacuole; a distinct store for water. [4] The cell has it all the organizational set-up each structural unit being a department that functions on its own, as well as one that condinates with the other departments. As a government health officer therefore it is important to ensure that all cells of a human body are functioning properly as the malfunctioning of only one cell might affect the whole body. There is a catch however, that the nucleus; that structural unit that has genes which code/ demand for specific roles to be played by different structural units of the cell. The genes dictating what happens in the cell, fostering both individual talent (departmental autonomy) and team-work (between departments) are the management. The top tier of the cell that does the â€Å"decision† making. The departments/units that form the crux of this cell industry are not far from many existing department especially in the government sector. In function at least. The powerhouse of energy; mitochondria the system that fuels the assembly is likened to the accounts department. The paymaster and motivator. What about the other assembly points, ranging from the â€Å"energy reactions† like the chloroplasts that will provide energy for carbohydrates, protein and vitamin formation. The reticulum system playing the role of transportation and Logistics. The micropinocytotic vesicle doing the sourcing of raw materials. The sublime procements officer. The golgi apparatus; ever packaging and branding processed material. Like any other industry; there is always a better way to present product to the client. The security system cannot be understated. Setting up the perimeter. Defining the limits off the area covered by the industry in the form of the cell membrane and cell wall. You stare at that life so invisible to the naked eye, but surprise is all you have got when that simple nature of life typifies our complex organizational nature. [5] xxxxxxxxxxxxxxENDxxxxxxxxxxxxxxxxxxxxxxxx This letter should be addressed to a senior government official in the health sector like the Medical Officer of Health. These are the paramedics on the ground on whose fingers and skills hundreds of thousands of people depend for the health to be something to reckon with. They are the researchers, policy makers, the trainers etc. The nature, components and functions of the cell will help him in effecting his roles in a more efficient and effective manner. References Campbell, N. (2004): Biology 7th edition, Benjamin-Cummings Publishing Company, New York Mashburn, L. M and Whiteley, M. (2006): Special Delivery: Vesicle Trafficking in Prokaryotes. –   Mol Microbial 61 (4): 839 – 46.                         [1] Campbell, N. (2004): Biology 7th edition, Benjamin-Cummings Publishing Company, New York [2] Mashburn, L. M and Whiteley, M. (2006): Special Delivery: Vesicle Trafficking in Prokaryotes. –   Mol Microbial 61 (4): 839 – 46. [3] Mashburn, L. M and Whiteley, M. (2006): Special Delivery: Vesicle Trafficking in Prokaryotes. –   Mol Microbial 61 (4): 839 – 46. [4] Campbell, N. (2004): Biology 7th edition, Benjamin-Cummings Publishing Company, New York [5] Mashburn, L. M and Whiteley, M. (2006): Special Delivery: Vesicle Trafficking in Prokaryotes. –   Mol Microbial 61 (4): 839 – 46.

Anthropogenic and natural factor associated with high GHGs concentration in the atmosphere

Anthropogenic and natural factor associated with high GHGs concentration in the atmosphere In the Atmosphere, there are many chemical compounds that are described as greenhouse gases due to their characteristics. These gases allow solar radiation (shortwave radiation) to penetrate freely through the Earth’s atmosphere thereby heating the land surface and oceans. When the earth’s surface is heated and warms up, it releases the heat in the form of infrared light (longwave radiation), invisible to human eyes. Some of the infrared light released by the Earth passes through the atmosphere back into space. However, greenhouse gases will not let all the infrared light pass through the atmosphere. They absorb some and radiate it back down to the Earth. This phenomenon, called the greenhouse effect, is naturally occurring and helps to regulate and maintain the warmth of the earth’s surface. It is vital to our survival on Earth. Without the greenhouse effect, the Earth’s average surface temperature would be about 15Â ° Celsius cooler, and life would be u nbearable. Human activities, however, have contributed greatly to an increase in the number of greenhouse gases in the atmosphere. Emissions started to rise dramatically in the 1800s due to the Industrial Revolution and changes in land use. Although greenhouse-gas-emitting activities are essential to the world economy and a fundamental part of modern life, they have majorly contributed to climate change and the increase in the average global temperatures. Anthropogenic Factors Contributing to High GHGs Human activities result in emissions of four principal greenhouse gases: carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) and the halocarbons (a group of gases containing fluorine, chlorine, and bromine). These gases accumulate in the atmosphere, causing concentrations to increase with time. Significant increases in these gases have occurred in the industrial era and the increase is attributable to human activities; The following are some of the contributors of increased Greenhouse Gases in the atmosphere from anthropogenic activities; Agricultural Activities The increase in Methane concentration is attributable to human activities in agriculture, natural gas distribution, and landfills. In agriculture, it is estimated that Rice cultivation releases methane roughly one-fifth to one-quarter of global methane emissions from human activities. Accounting for over 90 percent of all rice production, wetland rice is grown in fields that are flooded or irrigated for much of the growing season. Bacteria and other micro-organisms in the soil of the flooded rice paddy decompose organic matter and produce methane. Domesticated animals especially cattle emit methane. Methane is produced by cattle, dairy cows, buffalo, goats, sheep, camels, pigs, and horses. Most livestock-related methane emissions are produced by enteric fermentation of food by bacteria and other microbes in the animals digestive tracts; another source is the decomposition of animal manure. Livestock account for about one-quarter of the methane emissions from human activities, which total to about 100 million tonnes annually. Carbon Emissions Carbon dioxide has increased from fossil fuel use in transportation, building heating and cooling and the manufacture of cement and other goods. Deforestation releases CO2 and reduces its uptake by plants. Carbon dioxide is also released in natural processes such as the decay of plant matter. Carbon dioxide from the burning of fossil fuels is the largest single source of greenhouse gas emissions from anthropogenic activities. Most emissions associated with energy use result from the combustion of fossil fuels. Oil, natural gas, and coal (which emits the most carbon per unit of energy supplied) furnish most of the energy used to produce electricity, factories, in-vehicle engines and houses heating. If fuel is burned completely, the only by-product containing carbon would be carbon dioxide. But combustion is often incomplete, so carbon monoxide and other hydrocarbons are also produced. The supply and use of fossil fuels account for about three-quarters of human carbon dioxide (CO2) emissions, one-fifth of the methane (CH4), and a significant quantity of nitrous oxide (N2O). It also produces nitrogen oxides (NOx), hydrocarbons (HC), and carbon monoxide (CO), which, though not greenhouse g ases themselves, influence chemical cycles in the atmosphere that create or destroy other greenhouse gases, such as tropospheric ozone. Nitrous Oxides emissions Nitrous oxide and other nitrogen oxides are produced because fuel combustion causes nitrogen in the fuel or air to combine with oxygen in the air. Nitrous oxide is also emitted by human activities such as the use of fertilizer which increases nitrous oxide emissions. The nitrogen contained in many fertilizers enhances the natural processes of nitrification and denitrification carried out by bacteria and other microbes in the soil. Human Induced Ozone Ozone is a greenhouse gas that is continually produced and destroyed in the atmosphere by chemical reactions. In the troposphere, human activities have increased ozone through the release of gases such as carbon monoxide, hydrocarbons, and nitrogen oxide, which chemically react to produce ozone. As mentioned above, halocarbons released by human activities destroy ozone in the stratosphere and have caused the ozone hole over Antarctica. Halocarbon gas concentrations have increased primarily due to human activities. Principal halocarbons include the chlorofluorocarbons (e.g., CFC-11 and CFC-12), used extensively as refrigerants and in other industrial processes.