Unix Multiprogramming

The computer allocated in UNIX to every process, whether a system task or user task. The choice of task to be executed when the CPU becomes free is based on a formula that penalizes tasks that have used most CPU cycles in the recent past. The process priority which can be set by super user (root) is an important part of this formula. The CPU scheduling algorithm is simple but allows users some measure of control over their workstation performance. The CPU speed defines the capacity of a mainframe for a given release of the operating system. All other hardware components are usually configured so that when the system is fully loaded, the CPU which is by far the most expensive resource becomes the bottleneck. In order to give the user the impression of simultaneous execution, the CPU must be allocated alternatively among the individuals processors. This task is managed by scheduler, a special processor that maintains a list of normal processes and sees to it that the processor handles the next process at certain time intervals. There are various strategies that a scheduler can use to determine which process to handle next, one of these strategies is (round robin) selects the next respective process in the list at regular intervals and puts it at the end of the list after the allocated time if the process is not yet finished. Another strategy assigns each process a priority, whereby processes with higher priority are allocated more CPU time. UNIX employs nice levels, which allow the user to influence the internal priorities of processes. This allows the user to reduce significantly the encumbering of the system by programs running in the background. Likewise the administrator can also raise the priority of important process to ensure faster execution. UNIX does timesharing as well as multiprogramming. Timesharing creates the illusion that several processes execute simultaneously, even though there maybe only one physical CPU.

Fiscal Administration 5 Essays

Fiscal Administration 5 Essays Fiscal Administration 5 Essay Fiscal Administration 5 Essay Name: Instructor: Course: Date: : Fiscal Administration 5 America is faced with the worst fiscal challenge. The fiscal challenges threaten the future of the country and consequently the quality of life those future generations. The country is faced with enormous budget deficits and the public debt stands at 14 trillion dollars. In this sense, the country seems be on its way to bankruptcy. Worse still, the country’s spending patterns are not bound to end any time soon. This will only increase budget deficits in the future and the public debt will continue to grow. It is time that the government reconsiders their budget policy lest the country falls of the ‘fiscal cliff’. The time to initiate fiscal changes is now. While such a move will meet several challenges, cutting spending is the one choice of action that may restore the balance in the country’s budget. However, whatever the choice of action, it must rationally address the fiscal crisis America is facing. The country needs to adopt a budget philosophy that wi ll revamp the economic situation in the country. An effective budget policy that the country should adopt is an annually balanced budget. This is a situation where the government budget policy aims at equating the government spending with the revenue collected (Lee et al 134). In this sense, the government should only use what it has. However, this may meet various challenges that may make it difficult to achieve. For one, the government needs to continue increasing spending despite the fact that revenue coming in is not enough to sustain the spending. This is because that there are an increased number of people depending on government support to sustain their living. Therefore, cutting spending may hurt the economy more that help it. The challenges faced by cutting spending may mean that the budget may not allocate enough for public services such as health an education. Over 55 million Americans receive Social Security benefits. In addition, 50 million of these Americans are on Medicare and about 42 million of them are retired and include their dependants. Again, the notion of ‘Baby Boom’ of those born between 1947 and 1964 reached the retirement age in 2011. In the years to come there is going to be very many retired individuals in America affecting the tax collected on income by the American government. The challenge of cutting spending will mean that this population and the dependants will suffer. To save this situation, borrowing is not an option since the public debt is already high and increasing taxes on the working population may witness a revolt from them. Despite these challenges, a balance budget is the best way out. However, some may argue that it is too late for that since doing so will mean cutting spending and increasing taxes to sustain government programs. This may lead to an economic down turn where people have a reduced purchasing power (Lee et al 59). This may lead to business failures in both corporate and small businesses. Therefore, they would propose that the people weather out the situation and hope for the best in the future. Before the option of cutting spending and establishing a balanced budget is dismissed, the country needs to understand the effects of ignoring the fiscal crisis and letting every thing fall into place. Things may never get better if nothing is done. Therefore, it is necessary to understand where the country stands now and where it will be when the government budget indicates that spending has been cut and an attempt to balance the budget will have us. This situation may create more problems for th e country, but the people need to understand that this meant to ensure the existence of the Union in the future. Lee, Robert D, Ronald W. Johnson, and Philip G. Joyce. Public Budgeting Systems. Sudbury, Mass. [u.a.: Jones and Bartlett, 2008. Print.

Care of Cancer Essay Example | Topics and Well Written Essays - 750 words

Care of Cancer - Essay Example Oncologists or physicians perform tests to verify the diagnosis of cancer. However, more tests are recommended by a doctor to find out more on the cancer. This is because most tests are vogue and cannot be relied on for treatment. Additionally, there are types of cancer that are hard to classify. Lymphomas is one of the types cancer that require more than one test to ascertain its existence on the body. Combination of thorough test and evaluation of the patient history of symptoms provides a clear analysis for confirmation of presence or absence of cancer. Additionally, clear and effective diagnosis provides steps of monitoring the disorder and the rightful treatment for the diseases. The most common diagnostic methods of cancer are; biopsy, x-rays, endoscopy, diagnostic imaging and the blood test. According to Regnard and Kindlen (2002), biopsy is one of the diagnostic methods for cancer and it is done by surgically removing the tissue sample and put under microscopic test. The process involves either a short needle or a longer needle with the help of scan guidance such as CT scan or ultrasound. Diagnostic imaging is a technique used to provide internal image of the body. There are various processes performed under diagnostic imaging, such as X-rays, CT scans, positron emission tomography and magnetic resonance imaging (MRI). X-rays is the most common method used for screening lung and breast cancer. The method is effective in determining the spread of cancer to bones. CT and MRI scans are mainly used to ascertain the level of tumour and the results of treatment. The images produced during CT scans are analysed using a computer to produce images with a high number of tissues. However, MRI produces more detailed images than both CT and X-ray. Ultrasound is another diagnostic imaging for cancer. The aspects of ultrasound are not good like CT and

Outsourcing of US Jobs Essay Example | Topics and Well Written Essays - 1500 words

Outsourcing of US Jobs - Essay Example omotes efficiency and cost reduction so companies can maintain their competitiveness, sending American jobs overseas hurts America because our economy depends on jobs at all levels in order to continue functioning. The economy is suffering from this practice and it will continue to do so because Americans are forced to compete for jobs at pay levels well below the standard of living. The secondary problem with outsourcing is that companies can visit abuse on their employees and the workers have no way of protecting themselves. Even some companies have found that outsourcing isn’t as profitable as they had once thought it would be. When American businesses outsource, it seems that everyone loses. As Americans began to raise concerns about job losses, major companies gave their reassurances that this was only happening to the â€Å"low-end† jobs. This would weed out the lower end, highly repetitive and unskilled labor, leaving better jobs for Americans to fill. These early rounds of "globalization" cost millions of U.S. jobs, but various experts assured Americans that this should not be a major concern because these were blue collar "rust belt" jobs. Old technology, they claimed. Manufacturing is passà ©. The U.S. would enter the new global economy with the new technology. Information, services, cutting-edge research and development—these would be the clean, high-paying jobs that would keep America on top. (Jasper, 2006) This promise has been revealed to be an empty one as Americans watch more jobs leave the United States as outsourcers move up the ladder to target higher skilled jobs such as engineering, medicine and legal research. Between 2003 and 2008 finan cial service companies have moved approximately 500,000 American jobs overseas. Seen in the chart below are the companies with the highest numbers of outsourced workers overseas. These 10 companies alone are responsible for outsourcing nearly 200,000 jobs. These certainly aren’t the only companies

Education in China Essay Example | Topics and Well Written Essays - 1000 words

Education in China - Essay Example And because of the rapidly growing economic sector and global presence of China, it is imperative to understand how the education system works in the country. This essay discusses education in China and the similarities and differences between the Chinese and American education system. Education in China is categorised into elementary school, middle school, and high school. Similar to the United States, twelve years are spent in elementary school and high school, though in China, it is divided quite differently. In China, six years are spent in elementary school, then three years in middle school, and three years in high school, with the initial nine years spent in compulsory education (Peterson, Hayhoe, and Lu 22). One should successfully pass a competitive exam in order to be admitted into high school. High school is offering vocational education and general education. Parents pay for their children’s high school education, and scholarships are granted to those from low-inco me families. High school students are required to stay in school from 8:00 am to 5:15 pm. Generally, a particular school in every city is authorised to offer special education for pupils with impairments (Wang 73). Home schooling is not practised in China, not like in the United States. There are hardly any non-academic extracurricular and sports activities. Nevertheless, numerous students take part in after-school activities to review for examinations, particularly for university admission exams, which they can take once, not like the ACT and SAT Reasoning Test which can be taken several times in the U.S. (Liu 62). In China, a large number of students in elementary school are taught mathematics by a professional math teacher. The math teacher is also allowed to teach Chinese literacy in grades 1 and 2. In several areas, math teachers may also teach science, but science is not a major subject in the elementary school curriculum (Peterson et al. 44). In schools in far-flung or rural places, elementary teachers are also allowed to teach all subject areas, just like in the United States. However, math teachers in elementary schools are usual in China and less usual in the U.S. Moreover, Chinese pupils use a single classroom for their primary classes whilst in the United States students use different rooms for different subjects or classes (Guo and Lamb 75). The major difference between the education system of China and the U.S. is that in the former, the system in general is far stricter with more rules and in the latter there are considerably fewer limitations and greater freedom (Liu 38). For instance, a pupil having the liberty to choose his/her own classes is not common in China. Every class that a student in China should take is fixed. According to Peterson and colleagues, this lack of freedom in China may be attributed to the huge population of students and giving every student the freedom to choose his/her own classes is clearly problematic. Another import ant difference between the Chinese and American education system is the notion of head teacher. The head teacher in China performs an extra responsibility in overseeing their particular classes, providing instruction, and knowing and communicating with the students and their families. The Chinese head teacher will not merely teach his/her particular class that

Impact of Great Depression on British and German Policies Essay

Impact of Great Depression on British and German Policies - Essay Example This was characterized by many detrimental consequences, including a decline in the global industrial output. However, different governments developed ways of dealing with the Great Depression, mainly through policy responses. Nonetheless, as compared to the present times, the policy responses adopted by governments in the Great Depression period are considered to have quite helpless, as compared to what the contemporary governments are capable of. Most of the policy changes undertaken by both Germany and Britain did not turn out to be fully effective in combating the effects of the Great Depression between 1929 and 1932.The Great Depression spread from North America to other European nations, including Britain and Germany, mainly because of the close relationship the United States had with some developed nations in Europe (Wrigley 2008). After the World War I, the United States was a key financier and creditor of most European nations. This was after their economies had been severel y devastated by the war. In the case of Germany, the country had lost in the WWI, thus was required to pay reparations to the European nations that won the war, in accordance with the Treaty of Versailles (1919). Germany also needed to undertake industrial reconstruction, following the devastating effects of the war. This situation forced Germany to borrow money from the United States in order to accomplish the demands. However, when the economy of America experienced the Great Depression.... Germany also needed to undertake industrial reconstruction, following the devastating effects of the war. This situation forced Germany to borrow money from the United States in order to accomplish the demands. However, when the economy of America experienced the Great Depression, the country had to recall its loan from Germany, and this was the major cause for the collapse of the banking system in Germany, which marked the beginning of the Great Depression in the Germany. The Great Depression had major effects on both Germany and the Great Britain. This affected the economic, social, as well as political spheres of these countries. As compared to the Great Britain, Germany was hit most by the Great Depression. In Germany, the rate of unemployment rose sharply. Beginning 1929, Germany started to experience increased unemployment rates, and this was felt until 1932. Overall, it is estimated that by 1932, 6 million of Germany’s workforce was unemployed. This represented 25% of t he workforce. On the other hand, the effect of the Great Depression in Britain was highly experienced in its industrial and export sectors. The effects on these sectors in Britain were felt until the period of the WWII (Wrigley 2008). In order to alleviate the severity of the Great Depression, all the affected countries, including Germany and Britain, adopted various measures, which they considered effective to address the situation. In all those strategies adopted, a major aim was to protect the domestic production of the country. This included the imposition of tariffs, setting quotas on foreign imports, and raising existing tariffs, among others. Nonetheless,

Tourism And Economic Development In The Caribbean Tourism Essay

Tourism And Economic Development In The Caribbean Tourism Essay The Caribbean is known for its beautiful islands and breath-taking shores. There are numerous sites in this region of thousands of diverse islands. To list a few reasons as to why its a huge attraction to tourists from all over the world, then the coral reefs, colorful fruits, golf courses, sailboats and the wonderful sunsets at the beach are just the tip of the ice burg. Its the perfect place to relax with the family and a Caribbean holiday is the best place if anyone is seeking for a little adventure. The Caribbean seems to have everything for a great vacation from horse riding to hiking, wildlife tourism and much more. Everything from exploring the beautiful waterfalls, going kayaking upriver and even canoeing gives the Caribbean the top most position in tourism category. The Caribbean has both extinct and live volcanoes. It gives a definite adrenaline rush for tourists seeking it. Its tropical rainforests consists of rare and exotic animal species. It is by all means, absolutely beautiful. The Caribbean region consists of thousands of islands and to name a few that are of great tourists interest and as stated in http://wiki.answers.com/Q/What_are_the_names_of_the_Caribbean_islands: Anguilla UK, Antigua Barbuda, Aruba ~ Netherlands, Bahamas, Barbados, British Virgin Islands, Cayman Islands, Cuba, Dominica, Grenada, Guadeloupe ~ France, Hispaniola, Jamaica, Martinique ~ France, Montserrat ~ UK, Netherland Antilles, Puerto Rico ~ US, St. Barthelemy, St. Kitts Nevis, St. Lucia, St. Martin, St. Vincent Grenadines, Trinidad Tobago, Turks Caicos ~ UK and US Virgin Island. Its not only about the adventures but the Caribbean features cites of its rich heritage and unique architecture. If we were to take a look into the most popular tourist attraction in the Caribbean then this would definitely include the Barbados; a small island also called as little England during the British era. It is called so, because it still contains a part of the thriving British legacy, cricket, Anglo Saxon activity and high tea. We have Antigua Barbuda that has more than 356 beaches (representing one for every year). This too is another popular tourist attraction. Then there is Guyana which is a one of the independent members in the Caribbean. It is also known for its beaches and countless rivers and lakes. The best side to it is that gold deposits and diamonds can be found at the river bottoms and hillsides. This place is popular for yachting and sailing. Another beautiful island is ST Lucida. This island is known for its mountains that are covered with forests and the wildlife in it. Such other marvelous sites in the Caribbeans are St Martin, Trinidad, Cuba, Jamaica, Cayman Islands and much more. Situated in the Caribbean Sea is the Roatan Honduras Island that has brought the economy a constant dramatic increase due to the scuba diving fans. This place offers its visitors everything, ranging from marine wildlife to scuba lessons and even certification. It is know for its coral which is very diverse and can be seen easily. Here, tourism is well developed, hotels are well equipped and the resorts are numerous. This place is even called the Caribbeans best kept secret. It is no doubt one of the most beautiful sites and experiences to have. According to Gmelch, George (Behind the Smile: the Working Lives of Caribbean Tourism. Bloomington, IN: Indiana UP, 2003), the Caribbean governments welcome tourists with warm hearts because they realized that the Caribbean economy is completely dependant on tourism, also being referred to as the engine of their growth. Economic development in the Caribbean has benefited merchants, farmers, fishermen and many more. According to Pattullo, Polly. (Last Resorts: the Cost of Tourism in the Caribbean. London: Cassell, 1996), Tourism is a huge contributor to the economies of all Caribbean countries and the biggest contributor to many of them such as Antigua and Barbuda, Bahamas and the Virgin Islands Yolande Wilson MBA 08 In the Caribbean Tourism Fueled by Hotel Development: The Good and the Bad, explains that the success of Caribbean tourism is probably because people have the thoughts of aqua blue waters, warm sand beaches and luxury images on their minds. It is these precise thoughts that play a large role in the tourism business in the Caribbean. This puts all the focus on the tourism companies, services industries and real estate development. Tourism in the Caribbean is as early as 1862 where Jamaica had health spas and cruises that ran to the island but now, the tourism industries in the Caribbean estimates an anticipated contribution of over 18.7 billion dollars by 2011. Another author named C. James Hospedales wrote about the importance of tourism to Caribbean development in (Healthy Tourism in the Caribbean) Saturday, 22nd September 2007. He explained that 25 billion dollars were the gross output in the Caribbean tourism with more than 12 million tourists arriving for stay in the Caribbean and more than 6 million cruise ships. Hotels were completely booked and tourism became very important to the Caribbean economy. Tourism in the Caribbean is even compared to oil in the Middle East. They have also made it a motto Caribbean development through quality tourism which made it clear that the economy will be completely dependant on tourism for the coming years. With the arrival of the internet on 1995 which made it possible to spread the word of all the good and bad news. It was an effective tool in informing the world about this ravishing country. There was also the European tour operators whom made it easy for the tourists to get to the Caribbean from the European countries. However, with the success of increasing arrivals of tourists that helped boost the countrys economy, it also brought in the possibility of diseases being imported from different parts of the world. Yet this did not stop the Caribbean tourism organization from making sure that such issues along with injuries are minimized to its lowest. Their vision was that the Caribbean to be the safest, happiest, and healthiest of comparable destinations in the world Its obvious that tourism has affected the economy of the Caribbean region. These effects are mainly due to the travel and tourism industries. Through Paul McDaniels point of view, an eHow contributing writer in The effects of Tourism in the Caribbean, the economy was affected both positively and negatively. From these effects, wed notice that it includes the Caribbeans utmost and complete reliance on tourism and travel industries. But because, most of these tourism companies are never usually based in a particular Caribbean island, much of the money made does not stay on the Caribbean. This may also appear as a disadvantage for the Caribbean. However, without the competing companies, the economy could also be highly affected. However, David Jessop wrote about Grasping the full economic impact of Caribbean tourism Sunday | September 23, 2007 and questioned if the governments truly understood the importance of tourism, which in his words is the industry that now underwrites the regional economy. He provided reports that were produced over the last 2 years that explained the positive impact tourism had on the economy. These reports were based on the studies produced, supported and encouraged by the Caribbean tourism organization and Caribbean hotel association. It was a clear demonstration to the government that tourism has become the dominant force in the Caribbean. In these reports, the Caribbean tourism is expected to get over 56.1 billion dollars economically with about 15% increase in tourism employment from 2007 to 2017. Basically these earnings are expected to grow over 3 percent per year. Therefore, from these readings its pretty clear that the Caribbean region is economically dependent on the touris m industry. However, if these industries do not remain competitive, then the economic boost could come to an end. The problems that face the Caribbean tourism industry are those of globalization as well as interdependence. Therefore the beauty and nature of the country will not be enough to make the regions case. It requires the government to play a role in supporting it to the fullest. Whether its decreasing the taxes, providing public health education or even changing the policies to fit the countrys increasing economy. In a pacific islands report written by Sir Ronald Sanders in the Benefits of Caribbean tourism must be shared, he wrote about another problem that could affect the tourism industry in the Caribbean which is surprisingly the racial division notion in the island. This existing problem causes constant discomfort among many hotel owners that are expatriates, managers and the citizens yet they dare not deal with it. These problems are being left depressed like the racial division between the ownership on one side and the workers on the other. This problem is expected to worsen in the future if not dealt with now. Given the growing size of tourists coming into the country every year, it would keep requiring a large size of financial investments for the resorts and hotels in the Caribbean. These investments are primarily funded by the white expatriates that own tourism companies and can build or own resorts and any other tourism aspects in the business. This may seem as a problem because th e profits in this case are sent abroad. The country does not benefit and the balance is disturbed. In an abstract written by Harry G. Matthews, 6 May 2009 Radicals and third world tourism: A Caribbean focus, he talks about the metropolitan tourism in third world countries that have brought to question the tourist industries in a more political and social way. He talks about how it could affect the country and in this case, the Caribbean. He believes that tourism is an intrusion which is of metropolitan type, developed by the white people into the world of non-white. He also believes that these are merely fantasies sold to the tourists, causing the rise of cultures in countries like the Caribbean. Therefore the solution lies with the government of these countries where they are trying to bring forth an increase in sophistication. However, it is uncertain of how this action would actually take place. A critique; Tom Womeldorff analyzes the Caribbean tourism in an interesting way in Caribbean tourism: A Critical analysis 10/14/2009. He writes about the western mentality of escaping to tropical islands with exotic animals, plants and warm sunsets. This fantasy is offered by the Caribbean tourism resorts and travel agencies that aim to fulfill the western dream. And recently, the market has included the catering of tourists whom want to experience the exotic island to the fullest. These tourism agencies are expanding to provide whatever desires that could have tourist dollars following it. Therefore these tourist industries carefully construct the hotels and resorts to meet the conceptions and needs of tourists. This perception to perfection however comes with a cost. Although it provides as a source of income to the Caribbean people, it has made them completely commoditized because it requires that they put all their focus in the tourism programme, to make every thing possible. In The state and tourism: a Caribbean perspective by Hilton McDavid, Diaram Ramajeesingh, the abstract mentions an important something to think about and its how the tourism industries are now the center of attention. This is because the country is now tourism dependant. But does the government do what it takes to make sure that the social and environmental needs are taken care off? In this journal, the writers believe that the government have to work harder in order to shape the tourism industries in a way that every sector in the Caribbean benefits. The Stabroek staff  | February 5, 2010 in  Business the Caribbean tourism industry raise an important question Will the 2009 nightmare push regional tourist destinations towards diversification. It is true that the Caribbean got caught up in the economic crisis that took away jobs, homes, savings and much more. The Caribbean people were beginning to wonder if they have to shift towards diversification for their economic incomes. The number of tourists drastically changed and Caribbean development bank activities showed a significant decline. Sharply declining tourist arrivals according to the CDB with other investments, the main transmission channels of the crisis to regional economies. However it appears that the Caribbean has settled down from all the economic problems and found its comfort zone where its reassured that the tourists will keep coming in. the CDG even reports that the growth is expected to return and is likely to become the same by 2011. Although the whole economy of the country, peoples jobs and welfare cannot wait till the crises associated with the whole world is recovered, diversification for a better economy should be considered. In Caribbean tourism looking toward an improvement in 2010 by Linda Hutchinson-Jafar, Jan 28, 2010, after the economic crises that effected the countrys economy due to the decline in tourists rate, the Caribbean tourism industry began improving despite criminal and tax problems in some of the islands. And the earthquake that hit Haiti did not affect the islands economy much. Chastanet said, during and annual event in the Caribbean We will probably end the year 5.6 percent down but were looking for a strong rebound in 2010 And a hotel owner Rene Seepersadsingh The economic situation globally impacted negatively on Tobago. Hotels reported as much as a 40 percent decline in stayover, particularly from the British and the German markets As for Jamaica, it was seeing a 4% increase in arrivals while the other islands were reporting a decline in 2009. This is probably because it was running ads on television across North America, tempting them to join the warm summers. They were very successful with their ads as Barlett who works at the airlines said For this winter season now beginning, we have a record 1 million (airline) seats which is the largest number we ever had. The unusual part is that Jamaica continues to attract tourists even though it is categorized as one of the most violent countries in the world. The murder and crimes rates were 1,680 last year alone. Barlett believes that Its a contradiction. The most iconic attraction in Jamaica is the people. It belies the crime statistics Finally the most spoke about topic in the Caribbean tourism is HARPOONING CARIBBEAN TOURISM: SWALLOWING A DEAD RAT by Sir Ronald Sanders Sunday, March 14, 2010. The new attractions that require full support by the Caribbean governments are the whale watching activities. There was an international meeting held in Martinique from February 18 to 21 on what they call Sustainable Blue tourism in the Caribbean, specifically urging the Caribbean government to not only support this attraction but to protect the marine wildlife and mammal population by providing sustainable jobs to the fishermen. This new attraction is bound too boost the economy situation and the exotic fantasies keep getting better. Thus the Caribbean keeps finding ways to attract tourists and its economy although highly dependant on tourism yet, very rich.