Monday, May 25, 2020

The Cold War A Competition Between Two Countries - Free Essay Example

Sample details Pages: 10 Words: 3038 Downloads: 1 Date added: 2019/04/04 Category History Essay Level High school Tags: Cold War Essay War Essay Did you like this example? The United States sought to defeat the communist ideology of the Soviet Union on multiple fronts during the Cold War. Through indirect military interventions, cultural triumphs, and competitions occurring at the national level the two nations would oppose one another. These sorts of competitions proved incredibly effective as a project to help the bankrupting of the Soviet economy and ultimately played a pivotal role in the eventual collapse of the Soviet Union. Don’t waste time! Our writers will create an original "The Cold War: A Competition Between Two Countries" essay for you Create order The Space Race between the two nations was in part merely a strategy employed to laud scientific achievement over the other nation, but the competitive drive instilled in the populations of both countries led to innovations that made voyages into space and onto the moon possible, arguably among mankinds greatest achievements. Ideological superiority was the crux of this battle and the stakes rose for the first time in human history to a global level, meaning that the motivations to compete for individuals rose to meet those stakes as well. The rapid rate of development of technology that sprouted from this period is still fascinating to learn about, if this same rate of development could be achieved without the baggage of a nuclear standoff and ideological confrontation the results would no doubt again be tremendous as well. The Cold War was at its core a clash between two differing ideologies. Dating back to the formal creation of the Soviet Union, the indirect nature of the ideological conflict is observable in the actions of President Woodrow Wilson asserts Trani. Wilson then faced a major decision whether or not to recognize the Bolshevik Revolution of November 1917 and Lenins communist government. Wilson and the United States immediately perceived this new ideologically run government as a potential threat, and took actions to either indirectly oppose or contain it. Both nations had parallels in their origins though, being created amidst a revolution in an attempt to establish a then experimental system of governing. It was almost as if the development of the two nations into superpowers was pushed through a mirror lens though, because they transformed into opposites in every imaginable sense. These opposing manifestations into culture, economics, and systems of government were a result of the two i deologies themselves being the root of the opposition. Whether or not Wilsons decision to greet the newly formalized nation with suspicion was warranted is up for speculation, as a degree of caution in the facing of an unknown entity could either be viewed as a reasonable precaution or a sort of xenophobia. This attitude of suspicion though would continue to exist in the minds of later American presidents, culminating in the nuclear standoff of the Cold War where it is plainly apparent to see. This initial suspicion though became clarified into the identification of an enemy state, as both sides would come to assert that the others form of governing could not produce a functional society that existed as Superpower in the global landscape. The Cold War became framed in a way around the functional utility of the societies and achievements produced by socialist and capitalist ideologies. Both sides felt compelled to produce great feats and accomplishments justifying the existence of their own ideologically propped societies, and revealing the failures of their opponent. On the subject of the Soviet Ideology, Robinson has this to say, If the party could not prove that it was using its power to develop society correctly it became redundant by the terms of its own ideological discourse. While this quote is directly referencing the ideology of the Soviet Union, it can be related to the United States as well. The overall claim being fought over in the propaganda competitions of the Cold War was ultimately which type of governing system could produce the best society, and if one of the two failed in these challenges, by extension this was a failure of the ideology as well. Suddenly something as recreational as a sporting event was in part being used to determine the viability and fidelity of either western or eastern civilization. This suddenly put both societies under a microscope in the examining of all the different ways a society can manifest and be comparatively measured. Education systems, infrastructure, recreational activities and sporting events all became channels of propaganda that had the stakes of the overall global conflict placed on them. This propaganda war was fought on every imaginable front, leading to a multitude of bizarre posturing for dominance between the two countries. The Cold War came to shape not just military strength and technology, but culture, and became a struggle between two nations attempts at displaying the distinguishability and superiority of their own. Every potential way that the two ideologies could manifest themselves became a new indirect battleground for the two countries. Stone illustrates the extent to which the conflict occurred by saying.how facets of everyday life, from consumption patterns to film, sport or design were all influenced by the Cold Wars ideological strictures. The nuclear stalemate between the two countries kept them from engaging in direct traditional warfare, and limited it to a seemingly petty rivalry. This element of rivalry separated it from other direct wars and conflicts as concerns of mutually assured destruction forced the two nations to resort to compete with one another, but not directly engage as combatants. This posturing placed enormous pressure on anyone unlucky enough to find themself enveloped in a societal activity that had been hijacked for propaganda purposes. While direct engagement was off the table of options, posturing of military and technological strength remained one as one of the most focused avenues for both sides. Scientific advancement of a tremendous scope is one of the only positive effects that came out of the Cold War. This rivalry on a national level led to both incredible achievements but also the constant fear of the deployment of nuclear weapons. The nature of these competitions between the two ranged from sporting events all the way to scientific and industrial achievements like the space race. Again at the root of all these competitions was the desire to prove the superiority of their ideology by producing an Olympic winning national hockey team, or a fully functional aerospace division capable of completing missions into outer space. Slotten maintains precisely this by saying, The nuclear standoff meant that some of the most important battles between the United States and the Soviet Union involved propaganda and symbolism rather than direct armed conflict. While these types of competitions reached to a level that seemed petty from a present day perspective, they were still supremely significant in terms of producing influence by being in the global spotlight. It is rather comical though to consider the global stakes behind the overlying ideological confrontation manifesting into a game of chess between Bobby Fischer and Boris Spassky. There is another aspect to these competitions that reveals the layer of propaganda behind it, the use of mudslinging tactics in televised encounters. A prime example would be Cassius Clays (Muhammad Ali) interview discussed by Wood, in which she remarks, After Clays gold medal match, a Soviet reporter, reflecting Cold War strategies and propaganda, asked Clay how it felt to win gold for a country that practiced racial segregation. Obviously there are very few ways to answer such a loaded question like that without helping create a poor outside image of the United States, and that is the point of such a ta ctic. It is designed in nature to catch the person off guard and sours what should have been a shining moment for Clay and the United States. This tactic perfectly encapsulates the attitudes of both nations towards the other during the Cold War. It is reflective of a genuine resentment that existed in the collective mindsets of both nations. Even channels of dialogue, that were potentially means of peaceful resolution, became utilized in mudslinging efforts by both countries. Individual interactions between opposing members of these societies would have likely been one of the best ways to let the illusion of the iron curtain fall. In interacting as individuals that originate from foreign groups, one can realize that the other is not merely the stereotypical manifestation of said foreign group, but an individual with their own thoughts, traits, and motivations. Unfortunately Cold War societal attitudes on both sides aroused suspicions on individuals who attempted to bridge this gap. In the U.S., being labeled a Socialist or a Communist could subject someone to harassment from neighbors, police surveillance, and other varyin g forms of suspicion. The same could be said of Capitalist labels in the Soviet Union. It was a type of ideological xenophobia that either unified or ostracized individuals because of the all-encompassing nature of the Cold War. The echoes of this type of polarity still exist today in both American and Russian mindsets, as allegations of meddling in the American electoral processes by Russian agents are still currently being investigated. Tensions of Cold War magnitudes have been lowered significantly though due to a combination of things, like the collapse of the Soviet Union, the invention of new dialogue mediums via the internet, and lowering of nuclear arsenals. The ideological conflicts also led to vast advancements in technology in the West, primarily designed for military focused applications, but still significant advancements nonetheless. This technological advancement and production being demanded by the government for military purposes had its roots in the transformative role of the United States government that occurred during World War II. Schaffer promotes this idea by saying, The success of the war effort, particularly the development and production of various weapon systems and the building of a massive manufacturing in- frastructure, quickly solidified the governments expanded role. Rapid en masse output of tanks, bombers, and other military gear for the wartime effort was something the American people had proved capable of managing. Repurposing that same level of effort towards a singular project like a moon landing with successful results became a possibility in part because of this expanded role of the American government. The goal of landing a man on the moon also reflects a possibility of a shift from simply pursuing endeavors that show off military strength to endeavors of scientific advancement that could have applications that benefit all of humanity. This is monumental because it opens the door for both sides to realize that ultimately their ideological conflict is inane when compared to a transcendent goal of pure scientific advancement for the sake of mankind. Unfortunately this did not happen, as the resentment in both sides continued until the Soviet Unions collapse, but the possibility that it opened still exists today. Whether or not the same rate of technological advancement would occur if this sort of idealism were embraced is purely speculative, but it is a goal truly worth pursuing. American voyages into outer space were largely a response to the Soviet Unions recently developed capability to send satellites (and potentially nuclear missiles) into orbit. The 1957 Sputnik demonstration may have just been a satellite, but the implications behind what was now technologically possible in the Soviet Union loomed over the United States. The Eisenhower administration sought to immediately take action by dramatically increasing access to Federal Aid for students, and by also creating a number of agencies concerning national security and space travel. The most recognizable agency would be N.A.S.A, and although this tactic was expensive and potentially risky, it would ultimately pay off. Kay lists off some of the miraculous inventions produced from this era by saying, From space travel to stealth aircraft and unmanned aerial vehicle technology to the Internet, the by-products of this degree of government planning and strategic vision were extraordinary. Eisenhower saw that the will of the American people was capable but that further education would ultimately be necessary to step forward with new technological innovations that would answer the Soviets. What had started out as a flexing match between the nations was becoming more nuanced, as science played a larger role in the development of weapons. Sheer military might was still a prominent motivator, but as the levels of weaponry became more sophisticated, so too did the strain in creating and operating them. Eisenhower recognized that the demand for scientific advancement could satisfy not just a response to the Soviets Sputnik, but also strengthen American infrastructure, which would lead to all sorts of future innovations that could exist and operate not just for the purpose of displaying military might. This tilting of attitude toward advancing technology for civilian or practical use is part of what kept American infrastructure so sound. It is a combination of evolution of ap plication, and a then sequential shifting of goals. The initial drive to innovate may have come from a desire to establish dominance by the means of the military but, once the new technology was invented, new possibilities were suddenly available. These new possibilities led to the repurposing of goals in what exactly to do with this technology. Compare Eisenhowers foresight with the lack thereof in Soviet leaders toward scientific innovation and it helps illustrate why the United States would go onto advance, and the Soviet Union to ultimately collapse. In discussing the Soviet Unions tactic of replacing officials frequently in an effort to combat misconduct, Sherman has this to say, Specifically, it caused resistance to technological improvements because these improvements are costly and may pay off only in a longer-run period. The Soviets inability to simultaneously solve short-term and long-term problems is primarily what led to their nations collapse. Economic collapse is tragic for the denizens of the nation, but it is ultimatel y better than the looming alternative that almost came to be during the Cold War: nuclear annihilation. Imagine for a moment that a similar level of rivalry from the Cold War existed in a new pursuit towards scientific achievement, but instead of the ultimate goal being the annihilation of the enemy, it was the betterment of mankind. Consider again the leaps forward made in this era and how although they were in all likelihood created with motivations similar to the former goal, dozens of the innovations had practical applications resembling the latter goal. Similar to the sporting matches or other shows of force, technological breakthroughs were a sort of high stakes competitive game between sworn enemies. Ironically, by bringing new technology into fruition and displaying it on a global scale, both nations were guaranteeing the eventuality that the other nation would be able to produce and improve upon the same kind of technology. On the subject of generational improvements, Jones had this to say, Rather than consensus, the Cold War spawned competing visions of what caused unreliabil ity in electronics, and how this unreliability might be eliminated. If this same rate of high tech improvements could exist today without being overshadowed by nuclear arsenals, the universal applications of all the innovations produced would be unimaginable. The privatization of tech companies has already produced astounding pieces of technology that is continually improving, but to imagine the same national level of unity that existed in the Cold War aimed at a more benevolent goal is dizzying. The Cold War brought the world to the brink of nuclear destruction, and in the ensuing stalemate also created a rivalry that encompassed almost every conceivable battleground. This rivalry went on not to just create world champions in sporting events, but also create innovations that decades later we still rely on today. An optimistic person would look forward to seeing a friendlier resurfacing of this nature of rivalry, intended only to move human achievements forward, not just national agendas. Modern titans of industry like Elon Musk certainly have made an impact in attempting to keep the rate of innovation and advancement moving forward, but one longs to see a renewed interest in space travel and access to quality education coming from the federal government, not just the private sector. History has proved that incentivizing citizens to receive higher educations ultimately produces a better-equipped and driven workforce. The other lesson that Cold War history has taught is that the lack of foresight in the Soviet Union to invest in projects and educating their people ultimately played a role in their stagnation and decline. Although the military industrial complex attitude ultimately drove the demand of advancement in technology, individuals like Eisenhower saw the benefit of allowing this technology to be fully realized beyond its initial wartime designations. Part of the reason such astounding results came out of the Cold War era technological fields was due to the insane nature of the stakes. Threats of societal collapse, nuclear destruction, and ideological defeat were ultimately what drove the competitors so hard to succeed. When an individual truly believes his or her life and world to be at stake, they will compete harder than ever before to achieve success. It is doubtful that the world will ever see this rate of development again without the accompanying baggage of Cold War stakes. A valuable lesson from this period in history to realize though is that competition of a much friendlier nature can still produce unexpected results, and some think this can be achieved while simultaneously removing the world ending stakes of the Cold War. Bibliography Jones-Imhotep, Edward. Disciplining Technology: Electronic Reliability, Cold-War Military Culture and the Topside Ionogram. History Technology 17, no. 2 (2000): 125. Kay, Sean. Americas Sputnik Moments. Survival (00396338) 55, no. 2 (2013): 123-146. Robinson, Neil. What was Soviet Ideology? A Comment on Joseph Schull and an Alternative. Political Studies 43, no. 2(1995): 325-332. Schafer, Todd and Paul Hyland. Technological Policy in the Post-Cold War World. Journal of Economic Issues (Association for Evolutionary Economics) 28, no. 2 (1994): 597. Sherman, Howard. Rise and Fall of the Soviet Union. International Journal of Political Economy 24, no. 1 (1994): 5-18. Slotten, Hugh Richard. The International Telecommunications Union, Space Radio Communications, and U.S. Cold War Diplomacy, 1957-1963. Diplomatic History 37, no. 2 (2013): 313. Stone, D. Cold War Ideas. Contemporary European History, 22(4) (2013): 675-686. https://dx.doi.org/10/1017/S0960777313000416 Trani, Eugene P., and Donald E. Davis. Woodrow Wilson and the Origins of the Cold War: A Hundred Years Later and Still Relevant. World Affairs, 180, no. 4 (2017): 25-46. Wood, Molly M. Spanning the Globe to Bring You the Constant Variety of Sports: Teaching the United States and the World in Cold War. Journal of American History 103, no. 4 (2017): 1004-1011.

Thursday, May 14, 2020

Using Teacher Evaluation Tools For Teaching And Learning...

It is possible for accurate feedback to be a powerful resource in efforts to improve teaching and learning. Nevertheless, feedback that classifies the observed practices incorrectly is likely to involve a considerable opportunity cost for teachers as well as students (Iqbal, 2013). Notably, in 2009, a report by the name The Widget Effect was released by The New Teacher Project (TNTP). The report exposed the prevailing teacher evaluations as both infrequent and largely subjective (Jerald, 2012). Similarly, the attention towards the effectiveness of teacher evaluation is fairly new after decades of using teacher evaluation tools that have been noted to provide little or no useful information regarding the technical core of teaching (Harris, Ingle and Rutledge, 2014). Consequently, the tools often yielded inflated performance ratings that would not be taken with the seriousness necessary to inform basic personnel decisions (Jerald, 2012). It was observed that, despite relying mostly on direct observations made on teachers’ practices, they provided little, if any, useful feedback that can inform teachers’ improvement (Jerald, 2012). Thus, in adopting new evaluation system, there is a common problem in school systems as to the way to ensure that the observers’ coaching and feedback are free from significant classification errors and are largely based on judiciously accurate judgment regarding a lesson. Evidently, the national educational policy has been giving emphasis toShow MoreRelatedThe Importance Of Teacher Quality And Promote Learning1728 Words   |  7 PagesThe purpose of teacher evaluations is to ensure teacher quality and to promote learning. The Framework for Teaching, by Charlotte Danielson, has effectively identified 4 domains reflecting the responsibilities of teachers. The domains of teacher responsibility outlined in this evaluation tool are: Planning and Preparation, The Classroom Environment, Instruction, and Professional Responsibilities. Within each of the 4 domains, there are descriptive elements exemplifying the characteristics of theRead MoreThe Danielson Framework For Teaching1378 Words   |  6 PagesThe Danielson framework for teaching is described by the Danielson group as â€Å"a research-based set of components of instruction, aligned to the INTASC standards, and grounded in a constructivist view of learning and teaching. The complex activity of t eaching is divided into 22 components (and 76 smaller elements) clustered into four domains of teaching responsibility† Each component defines a different aspects of its respective domain. Levels of teaching evaluation tools provide rubrics that describeRead MoreThe Two Purposes Of Teacher Evaluation1347 Words   |  6 Pagestwo purposes of teacher evaluation are to ensure teacher quality and promote professional learning. In order to thoroughly address how the instruments and protocols offered in the book support and align with the two purposes of teacher evaluation evidence of practice must be first taken into consideration. The framework uses evidence in order to evaluate teacher performance. According to Danielson (2008), â€Å"the term evidence is intended to convey the conversations about teaching and must be groundedRead MoreHistory Of Administrator Evaluation Instruments : The Michigan Council For Educator Effectiveness1595 Words   |  7 Pages Comparison of Ad ministrator Evaluation Instruments The Michigan Council for Educator Effectiveness (MCEE) recommended administrator (Principal) evaluation instrument and the Marzano Principal Evaluation Instrument have several similarities. Principally, they both seek to ascertain the competence of instructors to ensure excellent performance among learners. In addition, they both have one of their key objectives that an evaluation of principals on a strong foundation guided by current researchRead MoreTechnology And Modern Contemporary Schools1654 Words   |  7 Pagesopinion regarding the use of technologies in teaching in modern contemporary schools. It describes how technologies help teachers in educational process, in what ways they are useful and beneficial for more effective learning, and what should be done to obtain the best possible results when technologies are implemented. The paper also mentions disadvantages, which may prevent teachers and school administrators from introducing technologies in their teaching, as well as barriers, which should be conqueredRead MoreEvaluation of Two Preschool Classrooms Using Early Childhood Environment Rating Scale682 Words   |  3 Pages According to our textbook Student teaching, â€Å"A quality program is one that exceeds rather than meets minimum standards for licensure.† To help us determine if a preschool classroom/program provides quality and to help us understand what quality means we were asked to evaluate and compare two preschool classrooms using the Early Childhood Environment Rating Scale. The classrooms I chose to evaluate and compare using the ECERS evaluation tool were the 4year old classroom at Naples ChristianRead MorePlan for Evaluating and Improving Formative and Summative Teacher Evaluation 1393 Words   |  6 Pagesparadigm for teacher evaluation requires identification and understanding of the key issues involved in these evaluations. Evaluations meet state mandates, teacher development, identification of ineffective teachers, and promotions. Many states mandate the career teachers are required to be evaluated once per year. This evaluation generally is in the form of a summative evaluation. A summative evaluation is not the recommended evaluation to improve teacher performance. Formative evaluations are the preferredRead MoreIct And The Appropriate Instructional Design Of Tools For Ict1562 Words   |  7 PagesThe learning and teaching process which should be supported by ICT process in developing countries like Tanzania is inevitable (Sanga et al., 2013). Although PSS in Tanzania have poor environments for teaching and learning, limited number of teaching staff, limited number of text and reference books as well as large number of students in classrooms but ICT can solve some of these prevailing problems (Table 7).By using different ICT tools for teaching and learning will enable teachers and studentsRead MoreAssessment And Evaluation Is Important Tool On Finding Out What Students Know And Their Experiences849 Words   |  4 PagesAssessment and evaluation is an important tool on finding out what students know and their experiences, among different styl es of learning in which has many methods on discovering what changes are made for supporting the student’s needs. Lesson plans, learning input and outcomes, and learning goals are where student performances are designed to support their learning styles and knowledge for reassessing and reevaluating throughout the year. As educators we need assessment to improve the qualityRead MoreUsing Group Activities As Formative Assessment Essay1474 Words   |  6 PagesUsing Group Activities as Formative Assessment in Mathematics Classroom The modern educational system is characterized by an increase demand for accountability and high-stakes testing. The demand for such accountability and testing is demonstrated in the quest for the use of summative assessments that provide a summary of the learning progress of students. Generally, the push for increased accountability and high-stakes testing has contributed to the use of different kinds of assessments that

Wednesday, May 6, 2020

Homeless Child Education Homeless Children - 1678 Words

Homeless Children Education Several factors severely compromise the ability of homeless children to succeed in school, as I discovered in interviews with 277 homeless families in New York City in 1988. Barriers to the success of these children include health problems, hunger, transportation obstacles, and difficulty obtaining school clothes and suppliesà ¢Ã¢â€š ¬Ã¢â‚¬ all of which are linked to low attendance rates (Rafferty and Rollins 1989). Other factors are associated with the nature of the emergency shelter system, the mobility that follows the loss of the home, and barriers that inhibit access to schools and to various school services. Sadly, there is no right to shelter in the United States. Even when families successfully obtain emergency shelter, other obstacles prevail. Placements are often made without regard to community ties or educational continuity. For example, the 1989 study by Rafferty and Rollins showed that 71 percent of homeless families with school-age children were sheltered in areas far removed from their original homes. Many had been frequently bounced between facilities. In many cases, each transfer to a different shelter requires a transfer to a new school, and each transfer means the loss of valuable school days. In addition, the noisy environment and constant flow of traffic typical of many shelters make it difficult for children to do their homework or get enough sleep. Project SAFE does not stop there. Family assistants continue to monitor children sShow MoreRelatedThe Effects of Homlessness Essay1221 Words   |  5 Pagesbecome homeless endure countless moves between friends and realatives homes trying to stay together. they are moved into shelters where ultimately they end up separated and children are put into foster care, this separation only adds to the agony which latter leads to these children in turn ending up homeless as adults. do to emotional and behavior issues stemming from childhood Homeless children and families suffer many hardships such as poor health and increased sickness. many of these homeless childrenRead More Homelessness in Public Schools998 Words   |  4 Pagesbackground. According to the National Association for the Education of Homeless Children and Youth (NAEHCY) reported that the U.S. Department of Education collected data stating â€Å"during the 2008-2009 school year that 954,914 homeless children and youth were e nrolled in public schools.† This problem affects the child socially, mentally, and most importantly academically. The National Association for the Education of Homeless Children and Youth (NAEHCY) defines Homelessness â€Å"is a lack of permanentRead MoreThe McKinney-Vento as amended by S. 896 the Homeless Emergency Assistance and Rapid Transition to1500 Words   |  6 Pages896 the Homeless Emergency Assistance and Rapid Transition to Housing (HEARTH) Act of 2009 also known as McKinney-Vento Homeless Assistance Act, signed into law in 1987, covers many aspects of homelessness. The National Coalition for the Homeless states that the â€Å"McKinney-Vento Homeless Assistance Act was the first—and remains the only—major federal legislative response to homelessness† (NCH). Originally, this act contained fifteen different programs that were included to aid the homeless populationRead MoreEssay on Poverty in Gwinnett County, Georgia1120 Words   |  5 Pageslearning, how to recognize children of poverty and how to help those students, and what rights those children have to an education. Poverty and Childrens Education In Gwinnett county the average homeless person is 6 years old (Family Promise of Gwinnett County, 2013). As an educator, this is worrisome because these children in poverty will encounter many difficulties relating to their education. What difficulties are these children facing with and their education? According to Donald HernandezRead MoreWhy Children Alone Or With Their Families Become Homeless?1108 Words   |  5 PagesSurprisingly, â€Å"[a] staggering 2.5 million children are now homeless each year,†countless innocent children and their families are impacted by a destitute life style (â€Å"National Center†). Fortunately, efforts are being made to address homelessness constructively. Statewide organizations such as Covenant House and local organizations like The Maslow Project are hoping that through their support service they can make a difference by providing help with shelter, food, education, mentoring, and overall major supportRead MoreHomeless in Ameri ca1684 Words   |  7 Pagesvast cities of United States. Less attention are shown to those who are homeless, people focus more on bigger issues when this is a major problem that has occurred for years. Statistics shows that 1.6 million youth run away from home each year between the ages of 12 and 17. The predominant race for runaways is White non-Hispanic (57%), Black non-Hispanic (17%), Hispanic (15%), and Other (11%) follow (Blaha). Homeless children most likely leave their original homes because of the way of life and theRead MoreThe Emotional, Social, And Academic Effects Of Homelessness On Children1291 Words   |  6 Pagesemotional, social, and academic effects of homelessness on children Hardly a day in life goes by without seeing a homeless child trying to survive, especially in developing countries. Unwanted sightings of homeless children happen every day both in developed and underdeveloped countries. The increase in divorce and trend in cohabitation has led to an increasing number of children being homeless. As stated in the â€Å" Homeless Facts Children and Homelessness - Some Facts conducted by the Committee onRead MoreThe Problem Of Homeless Children963 Words   |  4 Pagespeople think about what kind of individuals are homeless, they often conceive of a shabbily dressed, elder male sitting in the front of a random doorway, with a wine bottle in a brown paper bag. However, homelessness for the past years has begun to be more visible. Homeless children are portrayed in welfare and academic literature as a category of children at risk. Whatever transpires in early childhood can affect a child s lifestyle. In young children, the results are harsh. Stress can result fromRead MoreThe Homeless Are Homeless : A Middle Class Lifestyle After Marriage1654 Words   |  7 PagesBy the time their child was one year old their house was foreclosed, cars and valuable possessions were sold for money just to be able to eat for the next month. Living on the streets moving from shelter to shelter they were barely getting the nutrition that is needed to survive. So many people can end up homeless from children, to adults, and even veterans. According to Doran, fifteen percent of America’s homeless are chronically homeless, which means the person has been homeless continuously forRead MorePoverty And Poverty1619 Words   |  7 PagesThe Effects of Poverty on Education and Success Poverty affects a family in a number of ways, and a large portion of a child’s life that is directly affected by poverty is the child’s education. Education starts at home, and it is heavily researched and proven that poverty decreases a child’s preparation for school. Poverty increases risk factors and decreases opportunities. Low-income households often have problems with parental consistency, supervision, and support both within their family microsystem

Tuesday, May 5, 2020

Operating system free essay sample

Lightweight process; this is the unit of dispatching also known as thread. Multithreading; this refers to the ability of an os to support multiple, concurrent paths of Execution within a single process. Kernel-level thread; this is a type of threading in which all of the work of thread management is done by the kernel. Thread; this is a single execution path, with an execution stack, processor stack, and scheduling information. Review Questions 4.1 Table 3.5 lists typical elements found in a process control block for an unthreaded OS. Of these, which should belong to a thread control block and which should belong to a Process control block for a multithreaded system? Identifiers will appear in both thread and process control blocks, because both need to be identified. Processor State Information should belongs to process control block. Kernel will only interact with process not threads. Process Control Information: Thread control block should handle scheduling and State Information. We will write a custom essay sample on Operating system or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page 4Data Structuring should also be handled by thread control block (mostly). Memory Management and Resource ownership should belong to process control block. Privileges and Inter-process communications can probably be divided between the 2 process blocks depending on the system. 4.2 List reasons why a mode switch between threads may be cheaper than a mode switch between processes. Switching process requires OS to process more information. Memory is shared by threads, so theres no need to exchange memory or data during thread creation or switching. Thread switching does not require kernel to get involved, which in turn saves time on switching user to kernel mode. 4.3 What are the two separate and potentially independent characteristics embodied in the concept of process? Resource ownership: A process includes a virtual address space to hold the process image; recall from Chapter 3 that the process image is the collection of program, data, stack, and attributes defined in the process control block. From time to time, a process may be allocated control or ownership of resources, such as main memory, I/O channels, I/O devices, and files. The OS performs a protection function to prevent unwanted interference between processes with respect to resources. Scheduling/execution: The execution of a process follows an execution path (trace) through one or more programs (e.g., Figure 1.5 and Figure 1.26). This execution may be interleaved with that of other processes. Thus, a process has an execution state (Running, Ready, etc.) and a dispatching priority and is the entity that is scheduled and dispatched by the OS. 4.4 Give four general examples of the use of threads in a single-user multiprocessing system. Foreground and background work: For example, in a spreadsheet program, one thread could display menus and read user input, while another thread executes user commands and updates the spreadsheet. This arrangement often increases the perceived speed of the application by allowing the program to prompt for the next command before the previous command is complete. Asynchronous processing: Asynchronous elements in the program can be implemented as threads. For example, as a protection against power failure, one can design a word processor to write its random access memory (RAM) buffer to disk once every minute. A thread can be created whose sole job is periodic backup and that schedules itself directly with the OS; there is no need for fancy code in the main program to provide for time checks or to coordinate input and output. Speed of execution: A multithreaded process can compute one batch of data while reading the next batch from a device. On a multiprocessor system, multiple threads from the same process may be able to execute simultaneously. Thus, even though one thread may be blocked for an I/O operation to read in a batch of data, another thread may be executing. Modular program structure: Programs that involve a variety of activities or a variety of sources and destinations of input and output may be easier to design and implement using threads. 4.5 What resources are typically shared by all of the threads of a process? All of the threads of a process share the state and resources of that process. They reside in the same address space and have access to the same data. When one thread alters an item of data in memory, other threads see the results if and when they access that item. If one thread opens a file with read privileges, other threads in the same process can also read from that file. 4.6 List three advantages of ULTs over KLTs. 1. Thread switching does not require kernel mode privileges because all of the thread management data structures are within the user address space of a single process. Therefore, the process does not switch to the kernel mode to do thread management. This saves the overhead of two mode switches (user to kernel; kernel back to user). 2. Scheduling can be application specific. One application may benefit most from a simple round-robin scheduling algorithm, while another might benefit from a priority-based scheduling algorithm. The scheduling algorithm can be tailored to the application without disturbing the underlying OS scheduler. 3. ULTs can run on any OS. No changes are required to the underlying kernel to support ULTs. The threads library is a set of application-level functions shared by all applications. 4.7 List two disadvantages of ULTs compared to KLTs. 1. In a typical OS, many system calls are blocking. As a result, when a ULT executes a system call, not only is that thread blocked, but also all of the threads within the process are blocked. 2. In a pure ULT strategy, a multithreaded application cannot take advantage of multiprocessing. A kernel assigns one process to only one processor at a time. Therefore, only a single thread within a process can execute at a time. In effect, we have application-level multiprogramming within a single process. While This multiprogramming can result in a significant speedup of the application, there are applications that would benefit from the ability to execute portions of code simultaneously. Discussion 4.2 In the discussion of ULTs versus KLTs, it was pointed out that a disadvantage of ULTs is that when a ULT executes a system call, not only is that thread blocked, but also all of the threads within the process are blocked. Why is that so? User process functions separately from Kernel processes. That is, thread structure of a process is not visible to the OS/kernel, which schedules on the basis of processes. The kernel continues to schedule the process as a unit and assigns a single execution state (Ready, Running, Blocked, etc.) to that process once one thread is blocked, the whole process is blocked and consequently all threads in that process are blocked. 4.5 If a process exits and there are still threads of that process running, will they continue to run? LEWI96-42 No, threads of the process will no longer run once the process is terminated. This is because all threads in a process share the same address space, all threads are suspended at the same time. Similarly, termination of a process terminates all threads within that process