Thursday, August 27, 2020
Psychsim 5 Operant Conditioning Free Essays
Old style Versus Operant Conditioning: Classical and Operant contrast in when an occasion happens. Traditional molding includes an occasion, and afterward an adapted reaction, while Operant depends on a choice, comprehending what the accompanying occasion might be. Fortification and Punishment: Reinforcement builds the likelyhood of the conduct rehashing. We will compose a custom paper test on Psychsim 5: Operant Conditioning or on the other hand any comparable point just for you Request Now Giving a pooch a reward for coming in the wake of setting off to the restroom outside. Expelling tasks when a young person complies with their check in time. Discipline diminished the likelyhood of the conduct rehashing. Giving a kid opportunity for hitting a child in class. Nonstop Versus Partial Reinforcement The conduct could almost certainly stop too. Calendars of Reinforcement Giving fortification after a consistent number of reactions. Paying a youngster after they complete 5 errands. Giving support after a reaction, after a consistent measure of time has passed. Letting a youngster enjoy a brief reprieve for each hour of schoolwork they do. Giving support after a changing number of reactions. Speculators at a gaming machine donââ¬â¢t know how frequently theyââ¬â¢ll be strengthened. Giving support after a reaction, after a changing measure of time has slipped by. Anglers donââ¬â¢t have a constent support in the wake of throwing their line. Reproduced Experiment: Variable proportion is the most impervious to annihilation long haul. In any steady circumstance, the subject may see a theme in the quantity of reactions they should give, or to what extent they should sit tight for a support. In a variable stretch senario, itââ¬â¢s genuine they will react more since they donââ¬â¢t know how short the span might be, yet they wonââ¬â¢t be continually reacting. In a variable proportion plan, the subject would need to continue reacting, and after a changing measure of reactions at long last be strengthened. This would keep the subject reacting at a higher rate. Instructions to refer to Psychsim 5: Operant Conditioning, Papers
Saturday, August 22, 2020
Week 6 D-1 Essay Example | Topics and Well Written Essays - 250 words
Week 6 D-1 - Essay Example With respect to pathogenicity, Ebola infection alludes to a forceful pathogen, which prompts high immunosuppression in people and nonhuman primates. The pathogenicity of Ebola is homogenous across types of the sickness since the species partner with hemorrhagic fever flare-ups. Obviously, the Ebola infection enters have cells by means of mucous layers, skin replication, and endocytosis (Centers for Disease Control and Prevention, 2015). The Ebola infection influences diverse host cells, blood coagulation, and safe barrier framework. All things considered, the Ebola infection causes huge immunodeficiency that generally results to fatalities. Ebola has a high destructiveness. To be sure, World Health Organization affirms that the malady can prompt a 90 % case casualty rate (Kloc, 2014). Ebola destructiveness rate relies upon its host factors like cell chemicals that split crucial Ebola infections (Pozos, n.d). By the by, harmfulness is consistently multigenic since Ebola has various stains (Pozos, n.d). This is apparent where Ebola had a 90% casualty rate in Sudan and only 1% in Uganda. Be that as it may, its low infectivity mitigates the high harmfulness rate (Kloc, 2014). This identifies with the way that pathogens that kill has have restricted time to spread. In that capacity, the need to set up balance between Ebolaââ¬â¢s destructiveness and infectivity may prompt a worldwide pandemic (Kloc, 2014). Places for Disease Control and Prevention. (2015). Ebola Virus Disease (EVD) Information for Clinicians in U.S. Social insurance Settings. Recovered from
Friday, August 21, 2020
Social Media Its Not Just For Kids
Social Media Its Not Just For Kids Make Money Online Queries? Struggling To Get Traffic To Your Blog? Sign Up On (HBB) Forum Now!Social Media: Its Not Just For KidsUpdated On 09/01/2016Author : Tim WilsonTopic : Social MediaShort URL : http://hbb.me/1ReSmOA CONNECT WITH HBB ON SOCIAL MEDIA Follow @HellBoundBlogThereâs a myth held by certain business personnel that social media is used mostly by kids and teens and that it has little potential as a platform for promotion for business. This cannot be farther from the truth because statistics speak otherwise. Below are four of the most popular social networking sites on the World Wide Web. Knowing the age groups that tend towards each social network is crucial to your social marketing strategy. And just looking at some of the numbers below will let you know that you do need a social marketing strategy. The statistics mentioned below are subjected to change.FacebookThe mere fact that Facebookâs current worth is approximately $7 billion proves that it is no childâs play. In fact, it is home to more than 900 million active users (as of April, 2012). Surveys show that approximately 52% of the siteâs users fall into the age group of 18-25. 20% of users are between 26 and 34. And those between the ages 35 and 65 comprise of 33% of the user pool. Interesting, only 15% of the users are between the ages 13 and 17.TwitterTwitter is the second most popular social networking site. Given its simple interface, the communication of its users is succinct and effective at the same time. Users from the age brackets 25-44 and 45-54 account for more than 25% and 20% of Twitterâs user pool respectively. And only 20% Twitter users are under the age of 24.LinkedInLinkedIn is the third most widely used social networking site on the web. Given the purpose it is used for i.e. professional networking, it is obvious that it is not for kids. The average age of its users is 44 and this makes it count among social networking websites with the oldest populations. 30% o f LinkedInâs users fall under the age bracket of 35 to 44. 20% of them are between 45 to 54 years old and 15% are between the ages of 55 and 54.READ15+ Best WordPress Video Plugins For Your BlogBeboBebo undoubtedly is for younger people. In fact, the average age of Beboâs users is the youngest when compared to the same of other social networks. However, in spite of having the youngest average age, 60% of Beboâs users are over the age of 17. 35 to 64 year old account to 30% of Beboâs user population.Average Age of Users of the most Popular Social Networking SitesFollowing are the average ages of the users of the most popular social networking sites. They have been arranged in an increasing order of the average age of their users.Bebo : 28 | MySpace : 31 | Xanga : 32 | Hi5 : 33 | Friendster : 33 | Tagged : 34 | Last.fm : 35 | LiveJournal : 35 | Reddit : 37 | Ning : 37 | StumbleUpon : 38 | Digg : 38 | Facebook : 38 | FriendFeed : 38 | Twitter : 39 | Slashdot : 40 | Delicious : 41 | Classmates.com : 44 | LinkedIn : 44These statistics have been considered by businesses to make sure that the market they are targeting on different social networking sites are actually there. The return on their investments has proved that not only are users of these present on the sites, they are responsive too.
Monday, May 25, 2020
John Carrol My Boy Life Essay - 1193 Words
After reading the short story ââ¬Å"My Boy Lifeâ⬠which is the memoir of John Carroll, I was from time to time envious of Carrollââ¬â¢s life but also relieved that I was not born in the 1800ââ¬â¢s. Born just before the war of 1812 in Upper Canada, Carrollââ¬â¢s life was very simple. His prospective future occupations only consisted of a few and were predetermined from birth. How simple is life when everything is already set in stone? From the age of twelve to seventeen, Carroll worked at a tannery and as a currier. Carrollââ¬â¢s job was associated with his fatherââ¬â¢s work, his father being a saddler and harness-maker. Only grinding the bark in the tannery, Carrollââ¬â¢s life was consistent and did not require much effort of having to plan out his future. Sadly, muchâ⬠¦show more contentâ⬠¦Even from a relatively young age, people are more conscious of what is happening around us as we have grown exceedingly intelligent ââ¬â too clever that our stan dards of what we expect from individuals have gone up. All of these factors make it seem like I have a tougher life than Carroll, but some aspects are still harder in his life. As he lives his daily life, Carroll, as a boy is expected to do heavy chores and to earn money for the family. Carroll operated the harrow, a heavy piece of strong wood in the form of the letter ââ¬ËAââ¬â¢. He performed this through the use of two oxen, but even then, it was very wearisome to perform this necessary but draining work. This would be extraordinary to see in the twenty-first century as the chores are relatively smaller and easier to manage. Generation after another, humans grew lazy and all the tasks performed before are replaced by machines that accomplish tasks ranging from the most difficult to the easiest. Carroll regrettably beat the poor oxen when the heavy harrow jerked, giving him a great shock to his slender arms. The oxen tried Carrollââ¬â¢s patience and as he was without grace at the time, it often made him lose his temper. Profani ties were thrown at the pitiable unknowing brutes which Carroll still repents even at the age of seventy. At a young age, it was harder for Carroll to get jobs and less common for fair payment to be received upon child labour. As you were not treated equally with adults, the pay was mostly bare minimum.Show MoreRelatedKing George IIi Of Great Britain2056 Words à |à 9 Pageswanted the British to go away and never come back. On March 5, 1770, Private Hugh White was standing guard on sentry duty in front of the Customs House on King Street in Boston, Massachusetts. A young, local boy came across him, and after an exchanging of words, Private White sent the young boy away into the streets bruised and crying. Moments pass and suddenly a group of roughly fifty to sixty Colonists met outside thee Customs House and began to protest because they were tired of the soldiers andRead More Biography of Robert E. Lee Essay2104 Words à |à 9 PagesBiography of Robert E. Lee Robert E. Lee was born in Stratford Hall, near Montross, Virginia, on January 19, 1807. He grew up with a great love of all country life and his state. This stayed with him for the rest of his life. He was a very serious boy and spent many hours in his fathers library. He loved to play with some his friends, swim, and he loved to hunt. Lee looked up to his father and always wanted to know what he was doing. George Washington and his father, Light-Horse Harry LeeRead MoreDeveloping Management Skills404131 Words à |à 1617 PagesStress-Reduction Techniques 144 SKILL ANALYSIS 147 Cases Involving Stress Management 147 The Turn of the Tide 147 The Case of the Missing Time 150 SKILL PRACTICE 155 Exercises for Long-Term and Short-Run Stress Management The Small-Wins Strategy 155 Life-Balance Analysis 156 Deep Relaxation 158 Monitoring and Managing Time 159 SKILL APPLICATION 161 Activities for Managing Stress 161 Suggested Assignments 161 Application Plan and Evaluation 162 SCORING KEYS AND COMPARISON DATA Stress Management AssessmentRead MoreArticle: Performance Appraisal an d Performance Management35812 Words à |à 144 Pagesothers. This is one of the oldest and most universal practices of management (Tripathi 2005). This is a process which reveals that how well employees perform their jobs when the performance compared with the predetermine set of standards (L Mathis John H. Jackson). Merit rating is used basically for promotion of employees. However performance appraisal is more comprehensive term for such activities, because its use extends beyond ascertaining eligibility for promotion. Such activities may be training
Thursday, May 14, 2020
Wednesday, May 6, 2020
Political And Economic Theory Is An Often Contentious Subject
Political and economic theory is an often contentious subject as it relates to how much interference governments should be allowed when it comes to rights and welfare of the public. One of the most debated topics asks the question ââ¬Å"is it a part of the government s role to take wealth away from the rich to give to the poor?â⬠John Rawls and Robert Nozick offer two differing theories about the role of government in distributing wealth. John Rawls argues that a just society must have equal rights for all. He defines a society as an organization of individuals who work together and create a social contract of moral and immoral actions. The goal of any society is to improve the lives of those who inhabit it, contradicting Nozickââ¬â¢s belief thatâ⬠¦show more contentâ⬠¦The second principle is called the difference principle which states that social or economic inequalities are only just if they help the most disadvantaged members of society. In this portion, Rawls does agree that material inequality is a necessity to encourage economic competition, but states that it is only just if it is then used to help those who have been disadvantaged by their social position. Rawls proposes that the difference principle is the core component of distributive justice and therefore justifies the redistribution of wealth from rich to poor at the hands of the state. Rawls develops the idea of an ââ¬Å"original positionâ⬠as a conception point and a justification for this theory of distributive justice. In this original position, an individual is standing behind a veil of ignorance which blocks out social class, economic class, sexuality or natural talents. In this place, an individual is in the position to make the most basic moral decisions because they face no external bias. If one knows no place in society, a rational person will make decisions that help those who are worse off. In the original position, the principles of justice would be agreed to by any rational human. This position supports the idea that while each person might have a different background, they should have a fair chance to pursue goals and the equality of opportunity despite theseShow MoreRelatedHow Social Movements Important For A Democracy Like New Zealand? Essay1601 Words à |à 7 Pagesan issue which challenges the political authority. Tilly describes a social m ovement as a ââ¬Å"sustained challenge to powerholders in the name of a population [â⬠¦] by means of repeated public displaysâ⬠(Tilly, 1993, p 7, emphasis original). It is a space outside formal, institutionalised politics which ââ¬Å"allows political energies to flowâ⬠(Norris, 2002). This alternative space can provide a platform for the voices of those who are disenfranchised and excluded from political institutions. The purpose ofRead MoreThe Civil Rights Movement Of North Carolina Essay967 Words à |à 4 Pagesclaimed. If Raleigh, Greensboro, Winston-Salem and Charlotte generally shunned confrontation over civil rights and mostly avoided violence, their efforts at becoming better were largely token in nature and did not disturb the fundamental social, economic and political order. The university at Chapel Hill and its allies in Raleigh and Greensboro were nationally known for their academic excellence and open-mindedness, but it was well into the 1980s before a ny of them became more than openly integrated. MostRead MoreEssay on Strength and Weaknesses of Classical Realism1037 Words à |à 5 PagesClassical Realism, with its implication that humans are intrinsically evil, is often characterized as a pessimistic analysis of human nature. While this characterization is undeniably true, Classical Realism should not be reduced to merely a cynical view of politics. Philosophically, Classical Realism is the epitome of the modern philosophical departure from ancient Greek philosophy, especially under Aristotle who contends that human nature is a ââ¬Å"tabula rasa.â⬠As our worldview changes, so do ourRead MoreAn Analysis Of Haraway s Manifesto Manifesto Essay1375 Words à |à 6 Pagespopulation emergent opportunities for political alliances based on affinities thrives. She reminds us that cyborgs do not/cannot respect traditional boundaries and are therefore driven by ââ¬Ësurvivalââ¬â¢ (294) imperatives to reach across, to break through, to shatter windows and ceilings, to ultim ately be fluid and flow between hardened boundaries and between worlds of status quo. In other words, to not only create patchwork identities but to construct political understandings and positions through patchworkRead MoreAnalysis Of The Book 23 Things They Don t Tell You About Capitalism ``1638 Words à |à 7 Pagesââ¬Å"95 per cent of economics is common sense made complicatedâ⬠(Chang, 2011, p xviii). In his book, 23 Things They Donââ¬â¢t Tell You About Capitalism, Korean economist, Ha-Joon Chang, assaults economic orthodoxy and questions many theories and empirical facts that we take for granted. Written shortly after the ââ¬Ëcredit crunchââ¬â¢ of 2008, Chang argues that this economic crisis was created by the free-market ideology which has been dominant since the 1980s and attempts to remove our rose-tinted glasses thatRead MoreThe Communist Manifesto Calling On The Workers Of The World2994 Words à |à 12 Pagesevents in history capture the attention of sch olars and the general populace alike more than revolutionary contentious politics. Revolts and social movements have for centuries brought about the most radical of changes to the political order of societies, at times even engulfing entire regions of the world in a contagious, fevered upheaval. Revolutionaries have fought not only against political systems and institutions such as aristocratic and colonial rule; they have also fought for their beliefsRead MorePluralism and Policy Making in New Zealand2593 Words à |à 11 PagesThe political theory of pluralism maintains that political power is not held exclusively by the government, but by a number of diverse groups. Interest groups, pressure groups, trade unions, and informal groups of like-minded citizens are all examples of the types of coalitions which pluralists believe influence the political system. New Zealand is a pluralist society. Our people are diverse and since the introduction of a MMP electoral system there is gr eater opportunity for groups to be involvedRead MoreAnalyse and Contrast Elite, Pluralist and Marxist Theories of the State. Which Interpretation Do You Find Most Convincing?2057 Words à |à 9 Pagespluralist and Marxist theories of the state. Which interpretation do you find most convincing? Intro The aim of this essay is to examine the three major theories of the state before concluding which of them is, in my opinion, most useful when examining the relationship between the state and civil society in the UK. I will first attempt to briefly outline the three theories. Following this I will offer some definitions and distinctions as well as highlighting some of the contentious and problematicRead Moreglobalisation3530 Words à |à 15 Pagesthe entire world has now shrunken into a small global village. Globalization has often been regarded as the ââ¬Ëcradleââ¬â¢ of global economic development. This so called ââ¬Ëworld liberatorââ¬â¢ however has not escaped criticism as opponents claim that it has been the cause of social evils and rising levels of poverty in developing countries. Due to the nature of globalization and in its bid to open up social, economic and political boundaries currently in place, various functions in different countries have beenRead MoreFiscal Federalism in Nigeria2955 Words à |à 12 Pagesone of the most protracted and controversial debates in the political and macroeconomic management of the economy. This debate has its foundations in the history and evolution of the Nigerian federation. ââ¬Å"Revenue allocation or the statutory distribution of revenue from the Federation Account among the different levels of government has been one of the most contentious and controversial issues in the nationââ¬â¢s political life. So contentious has the matter been that none of the formulae evolved at various
Tuesday, May 5, 2020
Significantly On Natural Resources Samples â⬠MyAssignmenthelp.com
Question: Discuss about the Significantly On Natural Resources. Answer: It has been seen that the government of United States depends significantly on natural resources like natural gas, coal, oil and many more fossil fuels that are not at all renewable. That indicates that whether it is extracted in an uncontrolled or controlled manner, eventually the resources will be hard to get and the world will run out of the necessary resources. The major amount of renewable energies is retrieved directly or indirectly from the solar energy. Solar energy might be used indirectly or directly from the sunlight for lighting and heating purposes in domestic houses or in business organizations. Nowadays renewable energy has become an important tool for generating electricity in an environment-friendly manner. There is ocean energy that can be generated from waves of the ocean or from the tidal waves (Ellabban, Abu-Rub and Blaabjerg 2014). Recently there have been significant rise in using geothermal energy extracted from Earths internal heat. The major advantages of renewable energy are that there is no threat of running out of energy and those are in general extremely environment friendly. Using renewable energy requires very less maintenance cost and in most cases, the renewable energy generates no harmful waste products that are harmful for the environment (Twidell and Weir 2015). In various regional areas, the projects related to renewable energy provides economic benefits. There are some disadvantages of using renewable energy too and those are mentioned in this section of this essay. It is significantly troublesome to generate the required electricity for the domestic and business sectors only from the renewable sources and sometimes the reliability of the supply of energy from renewable sources get hampered (Strupeit and Palm 2016). There are some other issues too, like, to generate adequate solar energy, the sky needs to be clear and bright sunlight on the solar panel will be necessary. Thus, it can be said that using both renewable energy and energy from the fossil fuel in a balanced way can become the best solution. Using renewable energy sources can open up various business opportunities and those are mentioned in this part of the essay. It is seen that the business organizations have to pay a significant amount of money each month for their consumption of electricity, where as if they opt for renewable energy, they will certainly be able to lower the cost (Stigka, Paravantis and Mihalakakou 2014). As a responsible business organization the management of the organization can show the people of their operational area that using renewable energy is their contribution for the benefit of environment as a corporate social responsible business organization. This type of initiative can immensely improve the brand image of the organization. Uses of renewable energy can potentially increase job opportunities as it would require modification in infrastructure to generate adequate renewable energy. Thus to conclude, it can be said that though depending solely on the renewable energy can become an issue, b ut, being able to balance the usage of renewable energy with the fossil fuel or generating energy from the natural resources will be much more effective in the current situation. References Ellabban, O., Abu-Rub, H. and Blaabjerg, F., 2014. Renewable energy resources: Current status, future prospects and their enabling technology.Renewable and Sustainable Energy Reviews,39, pp.748-764. Stigka, E.K., Paravantis, J.A. and Mihalakakou, G.K., 2014. Social acceptance of renewable energy sources: A review of contingent valuation applications.Renewable and Sustainable Energy Reviews,32, pp.100-106. Strupeit, L. and Palm, A., 2016. Overcoming barriers to renewable energy diffusion: business models for customer-sited solar photovoltaics in Japan, Germany and the United States.Journal of Cleaner Production,123, pp.124-136. Twidell, J. and Weir, T., 2015.Renewable energy resources. Routledge.
Thursday, April 9, 2020
RMIT International University Vietnam Essays - Linguistics, Culture
RMIT International University Vietnam Master of Business Administration Assignment Cover Page Subject Code BUSM4450 Subject Name: Business Research Design Location Campus (SGS or HN) where you study: RMIT Hanoi Campus Title of Assignment: (In the form of a question) Assessment 3 - Reflection Journal File(s) Submitted: Assessment 3 - Reflection Journal Student name: Le Thanh Thuy Student Number: S3360505 Lecturer and Group number: Dr Matthew McDonald Assignment due date : 10/9/2017 Date of Submission: 10/9/2017 Number of pages including this one: Word Count: (Main Content - excluding appendices reference lists) Table of Contents TOC \o "1-3" \h \z \u 1.Introduction PAGEREF _Toc492507382 \h 3 2.Reflective Journal PAGEREF _Toc492507383 \h 3 2.1.Initial Problem Identification : PAGEREF _Toc492507384 \h 3 2.2.The Concepts and Theory of Research Design Application PAGEREF _Toc492507385 \h 4 2.3.Forward Movement PAGEREF _Toc492507386 \h 4 2.4.Project Team Performance PAGEREF _Toc492507387 \h 5 2.5.Positive and Negative Experiences PAGEREF _Toc492507388 \h 6 2.6.Future Career Application PAGEREF _Toc492507389 \h 6 3.Conclusion PAGEREF _Toc492507390 \h 7 Reference Lists : PAGEREF _Toc492507391 \h 8 Introduction After completing two assessments for the Business Research Design course, the coordinator gave us the formula how to write a Reflective Journal in assessment 3. The reflective writing require us to obtain the deeper thinking of personal experiences and what about the observation during the process in order to make the research proposal. Our research question is : "Why do Vietnamese workers prefer working for a foreign company to a local one?". In the journal, I will report what I have learnt from nine sessions of the course and the process that my team project have been through, what we did well and did not do well. Beside this, I will discuss more about the knowledge what I have gained and evaluate my performance in both myself and team members, clarify clearer about my thoughts and spot the patterns and links of the course, thus, I would be able to purify why things happen the way my project team did and how much successful we achieved after completing the research proposal. Furthe rmore, the reflective journal will also identify the positive experience when working in a team and evaluate the effectiveness of the course which can assist for my lifelong learning, especially for the business research career. Reflective Journal Train J Athl ( 2006 ) identifies the benefits of writing a reflective journal are strengthening personal reflection, making the critical thought become easier and enhancing the feeling expression. Additionally, Walraven V C (2017) emphasizes that the reflective journal is a helpful learning evaluation for many wide range of subjects and this writing is not much requirements for students and do not need e effort for coordinator for any helps. Instantly, reflective journal permits students to reflect on their understanding they have learnt in class by writing on the reflection, students can demonstrate their knowledge and personal experiences after each lesson based on reflective journal and propose their new plan for the next lecture. A journal writing educate students to create new perspectives and allow them to blow their mind, brainstorm many kinds of new ideas, strengthen the skillfulness and optimize their critical thinkings. Thus, for each journal writing regularly after class, students would improve certainly in terms of their writing skills, sentences consistency and their creativity and innovative thinking as well. In the next sections, my reflective journal will emphasize our Sky Team s performance and demonstrate the quality of research proposal throughout four days of intensive class. Also, I will illustrate my critical thinking and personal experiences I have gained when I taking part in my project team during attending the Business Research Design course. Additionally, based on the process of writing a reflective journal in the online RMIT Learning Lab, I will discuss three key points that how to write an effective journal writing are describing the positivity and negativity what things happened, examine and assess the learning experience throughout intensive course and further personal knowledge what I have learnt from this experiences. Initial Problem Identification : The problem our Skyteam focus on is about the high turnover rate of Vietnamese companies compare to foreign ones. Vietnam now is a developing country which high potential for foreign investments, however, there is a large amount of Vietnamese young talents tend to
Monday, March 9, 2020
Woody Guthrie essays
Woody Guthrie essays For my project, I chose to go look at the exhibit, The Life and Legacy of Woody Guthrie, at the J. Wayne Stark University Center Galleries. It told about his life story, and presented many of his famous works of art. Woodrow Wilson Guthrie was born in the small town of Okemah, Oklahoma on the fourteenth of July in 1912. His grandparents moved to Oklahoma trying to seize the opportunity to seize land from the Indian Territory. In his lifetime, Woody experienced and saw much hardship, which he reflected through his artwork, music, and poetry. For example, at the age of only fourteen, Woody was living on his own. Using the hymns and spirituals he learned, Woody added what he learned in the folk tradition from people he met on the road. He also lived during the period of the Great Depression, which presented starving families and much injustice. Woody and many Americans wondered how all of these horrible things could go on in the country proclaimed to be the land of freedom. Many families were starving as plenty of food sat behind the fences in the fields left to rot. All of this, Woody expressed through his work, as he was not merely just an artist, but an avid activist as well. His life p rematurely ended when he was hospitalized being diagnosed with Huntingtons disease, which also was the cause of death to his mother. However, the impact that he laid upon American soil was so significant as to this day he is still acknowledged in every fight, and battle for fairness, and equality. The exhibit showed many of his paintings, poetry, and music he produced in his lifetime. His artworks were direct past events he personally experienced, from the Black Blizzard to Starvation Disease. His artwork was not beautiful, fancy, or done with much detail. However, Woodys ability to directly show the events so blatantly is what makes his works so powerful. For exa...
Saturday, February 22, 2020
Ombudsman in the UK Essay Example | Topics and Well Written Essays - 750 words
Ombudsman in the UK - Essay Example This means that this is an office that is supposed to check on the excesses of the government and it officer as far as handling of the citizens is concerned. It has been formed as the main force that helps the aggrieved parities to deal with the government. In this case it is supposed to check on the way the government and its officers having being given more power by the constitution that the people who they rule deal with the people. This office has an important function as it helps to provide a check and balance between the powers of the government officers and how they are applied to the people. This is one of the most important offices in the UK which has been serving the above mentioned function. In the UK, this office has been formed in the parliament and is called Parliament Commissioner for Administration. Although it has been referred as an imported institution that was formed in the Scandinavian soil, the office has been given the mandate to act on receiving complains from the public and then carrying out investigation and giving the recommendations to the parliament for the implementation of the necessary process. During its formation there were various agreements that surrounded the way the department could function amid the emerging parliamentary democracy and how it could fit to the legal framework. In real sense these earlier fears have been reflected in the functioning of the office as it has not been able to meet the expectations of the people. There have been many concerns about the functioning of the office not only in the UK but also in other places where it has been instituted. There have been claims that the office has not been meeting its mandates to protect the people from the excesses of the government. There has been issue with the way that one can represent their cases to the office. The office in the UK has not put up a framework that make is easy for the aggrieved party.
Wednesday, February 5, 2020
Renaissance in Italy and in Northern Europe Research Paper
Renaissance in Italy and in Northern Europe - Research Paper Example Other factors that contributed to the development of renaissance include the texts brought to Italy when Constantinople fell to the hands of the Ottoman Turks ad the migration of Greek scholars. The following paragraphs provide an exploration of these factors and more. Some historians argue that renaissance had its origin starting from 13th century as depicted by the writings of Francenso Petrarca (1304-1374) and Dante Alighieri (1265-1321), and the painting of Giotto di Bondone (1267-1337). Those who support the view that renaissance started from 1401 point to the rivalry that existed between geniuses Filippo Brunelleschi and Lorenzo Ghiberti as the cause of renaissance. Jensen (1992) reveals that the two people competed to for a contract to construct the bronze doors of the Florence Cathedralââ¬â¢s Baptistery. Other historians hold the view that general competition between polymaths and artists like Masaccio, Ghiberti, Brunelleschi and Donatello for artistic missions caused the explosion of the creativity of renaissance (Jensen, 1992). The socio-political structures in Italy general had a good part to play in the emergence of renaissance. The socio-political structures in Italy general had a good part to play in the emergence of renaissance. This is because there existed a unique political structure in Italy during the Middle Ages. For example, the country did not exist as a political entity. Instead, it was divided into territories and states (Clare and Millen, 1994). Some of the states like the republic of Florence had remarkable merchant Republics for example the Venice Republic. This practice had some features of democracy and the states involved were responsive with belief in liberty and forms of participation in government. Therefore, these states enjoyed a relative political freedom, condition which created conducive environment for artistic and academic advancement. The emergence of renaissance can also be linked to the relative positions of some I talian cities like Venice. These cities were great trading centers and this made them intellectual crossroads. Merchants who came to these cities brought with them ideas from their countries spread over the globe, especially the Levant. Venice was a producer of glass and the gateway for trade between Europe and the East while Florence was the capital of textiles. This brought in much wealth which led to more private and public artistic commissions and people having more leisure time for study (Cronin, 1969). Between 1348-1350, Europe was hit by the Black Plague/Death in Florence. This resulted to a shift in the way the world viewed people and life in general in the 14th-century Italy. For example, familiarity with death caused thinkers to focus more on their lives on earth instead of spirituality and afterlife. The Black Death therefore led to the sponsorship of religious works of art (Clare and Millen, 1994). There was also an unusual social climate in Italy which motivated the dev elopment of rare cultural efflorescence. This situation was more pronounced in Florence because it had a unique cultural life which is though to have caused the emergence of renaissance as a cultural movement (Turner, 2005). In 1453, the Byzantine Empire fell and this was accompanied by the closing of higher learning institutions by the Ottoman Turks. This caused the immigration of many
Tuesday, January 28, 2020
Essay on Administrative Reforms in the Philippiens Essay Example for Free
Essay on Administrative Reforms in the Philippiens Essay A study was made by the World Bank about the extent of corruption in the Philippines. The study reveals the existence of a consensus in the government, nongovernmental and international circles that corruption in the public and private sectors in the Philippines is pervasive and deep-rooted, touching even the judiciary and mass media (Chay Florentino-Holifena, 1998). This is collaborated by the data collected in September 1998 by Social Weather Station (SWS). The survey says that nearly two thirds of the respondent thought that corruption exists in the government with 38% saying ââ¬Å"a great dealâ⬠while 34% saying ââ¬Å"some. â⬠Also, according to Transparency International which calculated that Corruption Perceptions Index (CPI) n the Philippines, on a scale of1 (higher perception of corruption) to 10 (negligible perception), the CPI for the Philippines was 3. 6 in 1999. Out of the 99 countries rated, the Philippines was perceived as the Fifty-fifth least corrupt. As a result of the problem of prevalence of corruption in the Philippines, then President Joseph Estrada asked the World Bank to make recommendations to help the Philippine government strengthen its fight against corruption. For its part, the Philippines thought that the need for a stronger anti-corruption program is imperative considering that it is being cited with increasing frequency by international business surveys and anticorruption agencies as a country where corruption inhibit foreign and domestic investment. The need for stronger anti-corruption program by the Philippines is also brought about by the effects of corruption which drains away limited and scarce resources of the Philippine government for development, distorts access to government services by poor communities and undermines the public confidence in the governments determination to help alleviate poverty and fight corruption. In addition, the need for stronger anti-corruption program is made imperative in view of the importance of attracting international aid which is severely hampered by the international image of the Philippines as one of he haven of corruption in Asia. It must also be stressed that the move towards improvement in the public administration is a global trend that has affected even Southeast Asian countries which desire to improve public administration (M. Shamshul Haque, p. 1297). The World Bank then proposed a Nine-Point Approach in fighting corruption in the Philippines as its recommendation for creating a national strategy for fighting corruption in the Philippines. The principle behind the Nine-Point approach is focusing on reducing opportunities and motivation for corruption and making corruption a high-risk and low-reward activity. World Bank therefore recommended nine key elements for the national anticorruption program: a) reducing opportunities for corruption by policy reforms and deregulation; b) reforming campaign finance; c) increasing public oversight; d) reforming budget processes; e) improving meritocracy in the civil service; f) targeting selected departments and agencies; g) enhancing sanctions for corruption; h) developing partnerships with the private sector; and i) supporting judicial reform (ââ¬Å"Combatting Corruption in the Philippinesâ⬠, 2000, viii). In the light of the necessity of implementing reforms in the Philippines, this paper seeks to discuss the three areas of governance that may help in the attainment of the national goals of the Philippines which is to eradicate corruption, minimize the bureaucracy, minimize overlaps in program implementation by government agencies and check the expansion of government activities. These areas are: (1) decentralization and local governance, (2) economic deregulation and privatization and (3) human resource management. Reforms in local Governance and Decentralization The Philippines follows a Unitary form of government in which there is a concentration of political powers and authority in the national government. Legislative power, or the power to make, amend, repeal or alter them is vested in Congress which is composed of the Senate and the House of Representatives. Executive power, or the power to administer and enforce laws, is vested in the President. Judicial power, or the power to settle actual controversies involving rights, is vested in the Supreme Court and ther lower courts. This is unlike the United States which adopts the Federal system of government in which political powers and authority are shared between the national government and the individual states. However, the 1987 Constitution in recognition of the existence of territorial and political subdivisions of the Philippines which are provinces, cities, municipalities and barangays, has given these territorial subdivisions local autonomy for the purpose of making them effective and efficient partners in national building. Thus Article X Section 3 of the 1987 Constitution provides that: ââ¬Å"The Congress shall enact a local government code which shall provide for a more responsive and accountable local government structure instituted through a system of decentralization with effective mechanisms of recall, initiative and referendum, allocate among the different local government units their powers, responsibilities and resources and provide for the qualifications, election, appointment and removal, term, salaries, powers and functions and duties of local officials, and all other matters relating to the organization and operation of local units. (Art X, Sec 3, 1987 Constitution) The constitution also gives the local government fiscal autonomy for them to be able to provide basic services to their constituents, to wit: ââ¬Å"Each local government unit shall have the power to create its own sources of revenues and to levy taxes, fees, and charges subject to such guidelines and limitations as the Congress ma provide consistent with the basic policy of local autonomy. Such taxes, fees and charges shall accrue exclusively to the local governments. â⬠(Art X, Section 5, 1987 Constitution) As a result of the delegation of some powers and authority by the national government, the local government has been important and vital machineries in the attainment of national goals of the Philippines. The national government has learned that delegating some of its powers will enable it to focus on more pressing national concerns. It has also learned that giving communities local and fiscal autonomy will help make them proactive partners by the national government in the fight for corruption and advancement of he country. As a result, the local communities have been able to transform themselves to mini-governments that can to a certain extent sustain the needs of their constituents. The local government units have been able to propose innovations on how to help the national government. These are: a) Taking Care of People and Environment in Negros Oriental which is a project geared towards developing and improving the quality of life in Negros Oriental, a province in the South of P hilippines. The project involves the construction of community hospital that seeks to provide basic health services and information dissemination campaign to inform the people on how to take care of their environment; b) Saving the Mangroves of Kalibo, Aklan is a project geared towards the reforestation of a fifty hectare swampland; c) Saving the Marikina River is a project whose primary goal is to restore the Marikina River for the purpose of making it one of the major tourist destination of the city; d) The Mandaluyong Public Market is a partnership between the private sector and the city for the private sector to built and operate a market on a land owned by the city. This project is now the source of the revenues of the city which it now uses to support its provision of basic services to its constituents; e) Transforming Malalag into a Provincial Agro-Industrial Centre in Davao Del is another example of the effect of empowering local government units as partners with other government agencies in local administration and management, human resource development; f) Acquiring a Complete Equipment Pool in Munoz, Nueva Ecija is a project of the local government unit in acquiring under-utilized equipment from national government and making good use of them in rebuilding the local government unit; g) Floating Bonds for Low Cost Housing in Victorias, Negros Occidental is a project of the local government unit which involve floating of bonds to finance housing projects of its constituents; h) Improving the Productivity in Naga City is a local government unitââ¬â¢s project that focuses on providing services to the constituents, getting optimum outputs wi th minimum expenditures, producing quality results as desired and planned and making services accessible and acceptable based on the principle of greater good for the greatest number; i) Number Code Scheme in Makati City is a project geared towards easing the traffic in the business district of theà Philippines; j) Medical, Dental and Legal Mission in Caloocan City which is a project that seeks to deliver medical, dental and even legal advises to poor residents in Caloocan City; j) Solid Waste Management Program in Bulacan is a project designed to ensure that the people learn to segregate and properly dispose of their garbage. Privatization Program Privatization is essentially the sale or lease of assets of the government. It is done either because the country realizes how efficient the private sector is in business management or because the government seeks to earn additional revenues and that privatizing its assets will be instrumental in the governmentââ¬â¢s economic development program. Privatization of government assets started in 1986 during an era of political turmoil as the country has overthrown the dictatorial rule of the former President Marcos. Th is is the first wave of privatization. At the time the government wanted to dispose the assets which have been sequestered from the friends and relatives of President Marcos (Lauro A. Ortile p. 130). Other properties were also included in the privatization such as those that were foreclosed and taken over by banks. The second wave started in 1990 with the disposition of government properties in the utilities and infrastructure sectors which were formerly state-subsidized (Lauro A. Ortile p. 130). The third wave consists in opening of a wide range of public services such as housing health, postal services and pension funds (Lauro A. Ortile p. 130). According to the Department of Finance, privatization has yielded positive results for the government. It has not only generated additional revenues, but it has also broaden the base of ownership and fostered favorable climate for investors (Privatization Monitor, 2004, p. 1). Since 1987, the revenue generated from the privatization program has reached more than P200 billion for the Philippines. According to United Nation Public Administration Network (UNPAN) (1997), the Philippine Civil Service more than doubled from 430,000 in 1971 to 840,000 in 1980 to almost 1 million in 1985 (Mirshariff Tillah, 2005, p. 27 ) By itself, there is essentially nothing wrong in having a large workforce. It may be argued that having a large workforce aids in the delivery of public services and gives employment opportunities to a large number of people. However, if despite having a large workforce delivery of public service is still slow and the amount allocated given to these civil servants eats away a large percentage of the national budget, then having a large workforce is a serious cause of concern. It must be stressed for a country like the Philippines, cutting down the size of its civil servants is imperative in the sense that money used to pay for the salaries of non-performing employees may be utilized for infrastructure and delivery of public services. As a result, then President Fidel Ramos implemented one of the legislative measures designed to downsize the government and ensure that its existing employees will be more effectively utilized. This is the Republic Act 7430 ââ¬Å"An Act Providing for Optimum Utilization of Personnel in Government Service through a System of Attritionâ⬠which is otherwise known as the Attrition Law. The objective was attained simply by means of freeze hiring and preventing the filling of positions that become vacant due to resignation, retirements or death (Mirshariff Tillah, p. 27). The Attrition Law is still being currently implemented until now. It has been so effective that it has arrested the upward trend in government employment. Though it has not completely stopped the upward trend of the government employment, the same however has caused the increase to slow down. Research shows that the start of the implementation of the Attrition Law in June 1992, the total number of filled positions was 1,237,435. This number was reduced in 1993 and 1994 but increased from 1995 to 1996. The present figure of 1,213,602, however, still remains lower than the 1992 level (ââ¬Å"Administrative Reforms: Country Profiles of Five Asian Countriesâ⬠p. 117). It is also estimated that the five-year implementation of the Attrition Law, has resulted in savings for the Philippine government in the amount of more than six billion pesos (US$ 240 million) (ââ¬Å"Administrative Reforms: Country Profiles of Five Asian Countriesâ⬠p. 117). Conclusion The Philippines has undertaken dramatic changes in the last few decades. These policy changes are manifested in the legislative measures that have been passed which are designed to eradicate corruption, minimize the bureaucracy, and minimize overlaps in program implementation by government agencies. Though there are a lot more changes to be done, the future is bright for the Philippines as these measures are initial steps that have been taken towards national development. This is a sample essay from smartessaywriters. com ââ¬â the leading provider of reliable and affordable essay writing services and research paper writing services in the United States and the United Kingdom.
Monday, January 20, 2020
Moyers vs. Frontline :: essays research papers
Moyers Vs. Frontline à à à à à The difference between the Frontline video and the Moyers video is mainly that the Moyers video deals with normative ethics and the Frontline video deals with discriptive ethics. The Frontline video frightenly describes how George Walker bush came to develope the principles and values which guide his policy making. The Moyers video, on the other hand, dealt with how Sister Joan felt about the president's policies, and what she hoped the conservative Christian right would do to become more succinct with gospel teachings. Both sides have elements of both normative and discriptive ethics, but for the most part, they are polar in motivation. à à à à à à à à à à The Moyers video gives a rather surprising account of the Bush policies from the perspective of a very politically active Catholic nun. Sister Joan criticizes the president for everything from his policies on Iraq to the conservative view on abortion. Sister Joan poigniantly displays Bush as an egotistical, confused absolutist who's own agenda is the only one he relies on. Not that Sister Joan is wrong, but the Moyers video paints him not as coniving, but as misguided. At the end of the Moyers video, one has a sense that he truly believes what he's doing is right. When he makes the comment as governor, that God wants him to be president, I think he really believes it. To make a statement like that isn't just meglomania, it's political suicide...unless you actually believe it and happen to be a member of a faith that believes God does things like pick presidents. à à à à à à à à à à The president's interest in faith-based initiatives, is perhaps best contrasted against Sister Joan's response to the Conservative pro-life argument. Bush went against the constitution to allow religious institutions to recieve federal aid for community service programs, without being subjected to federal regulations. Nowhere, however, did he mention what faith would get the most funding. Bush had stated earlier that he didn't believe you were going to heaven without Jesus. He then showed an obvious favortism towards Christianity when speaking about the new programs in the public forum. If this continues, he will no doubt use his faith over the constitution to begin taking away the rightsof citizens. One of the areas in jeapardy is the women's right to privacy. Sister Joan uses the best response I've heard to the conservative argument I've heard in a
Sunday, January 12, 2020
Kids Need Sports
Kids these days are stuck inside doors just playing video games, doing homework, watching television, and thatââ¬â¢s just wrong. Kids should be outside playing sports, getting some exercise while having fun. There are many reasons nowadays why kids arenââ¬â¢t playing or end up quitting sports, such as their parents donââ¬â¢t want them to play and get hurt, kids feel that they canââ¬â¢t do the sport or wonââ¬â¢t be any good at it. A other reason kids end up quitting sports because they donââ¬â¢t like to lose or be on a losing team but as Muhammed Ali once said ââ¬Å"I never thought about losing, but now that itââ¬â¢s happened, the only thing is to do it rightâ⬠(Ali).This is a good mindset to have. Playing a sport at a young age helps the child become a better leader, team player, and an athlete that will carry on as they get older. Whoever disagrees that kids shouldnââ¬â¢t play sports should consider all the benefits sports bring to a childââ¬â¢s life and the people around them. Kids that play a sport are more likely to be in healthy, and have better socializing behavior. There are reasons why kids donââ¬â¢t playing sports at an early age due to parents not allowing them, and kid end up quitting sports due to injury and the stress of a sport.Sports are a great way for a kid to stay in shape and have fun. Playing a sports at a young age has a lot of health befits. As stated by Family, Youth and Community Sciences ââ¬Å"According to the Womenââ¬â¢s Sports Foundation, girls who participate in sports are less likely to become pregnant as teenagers and are less likely to suffer from depression. There is also evidence that athletic activity can decrease the likelihood of developing breast cancer and osteoporosis. â⬠(ââ¬Å"Benefits of Sports for Kidsâ⬠). Kids that play a sport at a young age are more likely to have better eating habits, and exercise when they grow up to an adult.As told by Academic Search Premier. â⠬Å"Athletes are generally less likely than their nonathlete peers to smoke cigarettes or to use marijuana or other illegal drugs (ââ¬Å"Relationships Between Youth Sport Participationâ⬠). When a kid plays a sport they are often on a team which builds socializing skills and teamwork skills. Routledge ââ¬Å"Around the world, there is evidence of sport/physical activity programmes being used to re-engage young people in education and society more broadly (ââ¬Å"The role of physical activity/sportâ⬠).Kids that play sports learn how to share, be a leader, have great team work, and be a better person in both the sport and everyday life. Kid will also have better obedience, and respect to their elders and parents. Sports are a great way to find close friends to talk to play with and they would have the same interests and hobbies as the child would have this makes finding friends easier on the child. Parents need to be involved in their childââ¬â¢s life making sure they are up to good; a great way in doing that is to enroll them in a sport.Parents are the one that need to make the push in their childââ¬â¢s life to start playing a sport and finding the sports they would like to play. Often enough parents are also the reason why kids arenââ¬â¢t playing any sports. An example would be a mother doesnââ¬â¢t want her kid to play football because they can get injured and she is to overprotective of her child, but parents need to know that they cannot keep their kids in door all the time this could cause socializing problems, and health problems. As said by Steinberg Academic Search Premier ââ¬Å"As a general rule, kids should start playing sports around age 6 (ââ¬Å"Let's play ball! ). There are many reasons why kids quit sports nowadays. Some of the reason are that the kid is under too much stress and got injured and afraid to play again. The kid could be in a great deal of stress with the sports busy work schedule with practices, games, and film . This could be a lot for a kid to handle. Academic OneFile ââ¬Å"If your child is unhappily stuck in a high-stress situation, De Lench advises, allow him or her to quit. ââ¬Å"As adults, we walk away from situations that aren't good for us, and it's a healthy lesson to teach your child (ââ¬Å"Not just fun and gamesâ⬠).Kids also should just play seasonal a sports not a year round sports so he or she is constantly under stress. Youth sports are essential to a kidsââ¬â¢ development to grow and learn. A child without a sport could have health problem when growing up and likely to get into more trouble with drugs. The kids also build social behaviors and leadership traits that well stick with them for the rest of their lives and good friends along so. The things that are stopping kids from playing g sports are parents, cause of injury, and a stressful environment of the sport itself.
Saturday, January 4, 2020
Battle of Stirling Bridge in the Wars of Scottish Independence
The Battle of Stirling Bridge was part of the First War of Scottish Independence. William Wallaces forces were victorious at Stirling Bridge on September 11, 1297. Armies Commanders Scotland William WallaceAndrew de Moray300 cavalry, 10,000 infantry England John de Warenne, 7th Earl of SurreyHugh de Cressingham1,000 to 3,000 cavalry, 15,000-50,000 infantry Background In 1291, with Scotland embroiled in a succession crisis following the death King Alexander III, the Scottish nobility approached King Edward of England and asked him to oversee the dispute and administer the outcome. Seeing an opportunity to expand his power, Edward agreed to settle the matter but only if he were made feudal overlord of Scotland. The Scots attempted to sidestep this demand by replying that as there was no king, there was no one to make such a concession. Without further addressing this issue, they were willing to allow Edward to oversee the realm until a new king was determined. Assessing the candidates, the English monarch selected the claim of John Balliol who was crowned in November 1292. Though the matter, known as the Great Cause, had been resolved, Edward continued to exert power and influence over Scotland. Over the next five years, he effectively treated Scotland as a vassal state. As John Balliol was effectively compromised as king, control of most state affairs passed to 12-man council in July 1295. That same year, Edward demanded that Scottish nobles provide military service and support for his war against France. Refusing, the council instead concluded the Treaty of Paris which aligned Scotland with France and commenced the Auld Alliance. Responding to this and a failed Scottish attack on Carlisle, Edward marched north and sacked Berwick-upon-Tweed in March 1296. Continuing on, English forces routed Balliol and the Scottish army at the Battle of Dunbar the following month. By July, Balliol had been captured and forced to abdicate and the majority of Scotland had been subjugated. In the wake of the English victory, a resistance to Edwards rule began which saw small bands of Scots led by individuals such as William Wallace and Andrew de Moray commence raiding the enemys supply lines. Having success, they soon gained support from Scottish nobility and with growing forces liberated much of the country north of the Firth of Forth. Concerned about the growing rebellion in Scotland, the Earl of Surrey and Hugh de Cressingham moved north to put down the revolt. Given the success at Dunbar the previous year, English confidence was high and Surrey expected a short campaign. Opposing the English was a new Scottish army led by Wallace and Moray. More disciplined than their predecessors, this force had been operating in two wings and united to meet the new threat. Arriving in the Ochil Hills overlooking the River Forth near Stirling, the two commanders awaited the English army. The English Plan As the English approached from the south, Sir Richard Lundie, a former Scottish knight, informed Surrey about a local ford that would allow sixty horsemen to cross the river at once. After conveying this information, Lundie asked permission to take a force across the ford to flank the Scottish position. Though this request was considered by Surrey, Cressingham managed to convince him to attack directly across the bridge. As Edward Is treasurer in Scotland, Cressingham wished to avoid the expense of prolonging the campaign and sought avoid any actions that would cause a delay. The Scots Victorious On September 11, 1297, Surreys English and Welsh archers crossed the narrow bridge but were recalled as the earl had overslept. Later in the day, Surreys infantry and cavalry began crossing the bridge. Watching this, Wallace and Moray restrained their troops until a sizable, but beatable, English force had reached the north shore. When approximately 5,400 had crossed the bridge, the Scots attacked and swiftly encircled the English, gaining control of the north end of the bridge. Among those who were trapped on the north shore was Cressingham who was killed and butchered by the Scottish troops. Unable to send sizable reinforcements across the narrow bridge, Surrey was forced to watch his entire vanguard be destroyed by Wallace and Morays men. One English knight, Sir Marmaduke Tweng, managed to fight his way back across the bridge to the English lines. Others discarded their armor and attempted to swim back across the River Forth. Despite still having a strong force, Surreys confidence was destroyed and he ordered the bridge destroyed before retreating south to Berwick. Seeing Wallaces victory, the Earl of Lennox and James Stewart, the High Steward of Scotland, who been supporting the English, withdrew with their men and joined the Scottish ranks. As Surrey pulled back, Stewart successfully attacked the English supply train, hastening their retreat. By departing the area, Surrey abandoned the English garrison at Stirling Castle, which eventually surrendered to the Scots. Aftermath Impact Scottish casualties at the Battle of Stirling Bridge were not recorded, however they are believed to have been relatively light. The only known casualty of the battle was Andrew de Moray who was injured and subsequently died of his wounds. The English lost approximately 6,000 killed and wounded. The victory at Stirling Bridge led to the ascent of William Wallace and he was named Guardian of Scotland the following March. His power was short-lived, as he was defeated by a King Edward I and a larger English army in 1298, at the Battle of Falkirk.
Thursday, December 26, 2019
Bullying Victimization And Its Effects - 1446 Words
The definition of bullying victimization is most often attributed to Daniel Olweus; who defined bullying victimization as an act in which a person is exposed to negative actions that are intended to inflict physical, mental or emotional distress (Olweus, 1994). One of the most significant consequences of bullying victimization is the observation that it occurs most often in repeated cycles that can affect the long-term emotional stability of the victim (Nansel, Overpeck, Haynie, Ruan, Scheidt, 2003 ). Studies indicate that bullying victimization experiences often leave victims prone to defiant or delinquent behaviors, poor school performance, and anger or aggression problems (Nadel, Spellman., Alvarez-Canino, Lausell-Bryant, Landsberg;â⬠¦show more contentâ⬠¦Recognizing the complex variables, researchers have modified existing psychological inventory tools such as the Rutter scales and the Child Depression Inventory, to better measure and assess the long-term victim outcomes (Vaillancourt, Hymel, McDougall, 2003). One area of increasing concern among researchers is the inadequacy of the survey tools that may be impeding our understanding of the scope of the victimization, most prior research efforts have relied on survey based models that were either self-reported or provided by educators or parents, this may have diminished the sample quality and reduced the validity of the measurements (Hawker Boulton, 2000). Acknowledging that bullying victimizations extend across a wide spectrum of the population and is not merely limited to adolescent experiences; researchers are striving to explore a number of overlapping social environments, including the workplace and social media where these types of victimizations also occur. Bullying victimizations represent a large class of victims that deserve the attention and efforts of researchers to minimize the effects of past abuse and help prevent future or continual abuse. The next paragraph introduces three spec ific theories of victimology as they are applied to bullying victimizations. Since the
Wednesday, December 18, 2019
The Trafficking Of Human Trafficking Essay - 1752 Words
In this essay, the history of human trafficking will be examined, followed by who is affected by trafficking. Next the scope and types of exploitation will be discussed. Human trafficking is an issue that affects countries all over the world. Governments have made an effort to curb trafficking, however these efforts have been very narrowly focused. American ignorance has led to poor handling of the issues by policy makers. Finally the essay will discuss a proposed solution and set some goals for society to work on in the future. When examining the traditional definition of slavery, it focuses on one human being taking ownership of another. Traditionally slaves were transported by lengthy sea voyages. However, with advancements in transportation human trafficking victims can be quickly and easily moved around the world (Kara 67). According to Robert Uy, ââ¬Å"Trafficking, prostitution, and slavery have existed since the beginning of civilization and, while at times have been prohibited, have continued to existâ⬠(215). Slaves can be exploited virtually forever with a form of slavery known as bonded labor, which has existed for centuries. Individuals involved in this type of slavery are often loaned money with the agreement to work of the debt; unfortunately, the pay is so low the debt is almost never repaid (Kara 67). Despite legislative efforts to pass effective anti-trafficking and anti-forced labor laws, the overwhelming focus has been on preventing sex trafficking. This coupledShow MoreRelatedThe Tr afficking Of Human Trafficking1061 Words à |à 5 Pagesare approximately twenty to thirty million slaves in the world today. Unfortunately due to trafficking being a fast growing crime it is very difficult to identify and locate these organizations and victims. Although there are many groups created to support victims, not enough awareness is being made and not enough action is being applied to stop human trafficking. Sex trafficking is a form of human trafficking that has been a worldwide issue since ancient times, but regularly forgotten, due to it beingRead MoreThe Trafficking Of Human Trafficking886 Words à |à 4 Pages(Attention catcher)What if somebody came into your life and guaranteed a better lifestyle, but instead you were enslaved into human trafficking? Human trafficking is when a person is abducted from their current situation and mostly likely used for sex slavery. Furthermore, did you know human trafficking increased over the years? (Listener relevance) Although you may not be as aware in your comfortable surroundings, you should always be aware of suspicious vehicles and people. Even though we enjoyRead MoreThe Trafficking Of Human Trafficking930 Words à |à 4 Pagesman. Regardless of the reasons, there are nearly 30 million victims of human trafficking globally. There are more slaves now than ever before. Trafficking of persons is not a subject that should be ignored or tak en lightly. In order to fully understand the enormity of this crisis, we will examine the root causes, facts, and the impact of human trafficking throughout the world. There are several factors to why human trafficking exists: poverty, governmental instability, natural disasters, addictionRead MoreThe Trafficking Of Human Trafficking3494 Words à |à 14 Pagesended, never to return, they go back and sneak into our communities in severe forms by human trafficking crimes. When humanity eliminated the phenomenon of human slavery, it returned in different pictures and forms, combining them enslaving people, through the recruitment, transportation, transfer of people by force and threat, and using and exploiting them in different ways. Among the victims of human trafficking crimes, there are those who are subjected to sexual exploitation, labor exploitationRead MoreThe Trafficking Of Human Trafficking1287 Words à |à 6 PagesHuman Trafficking Human trafficking is the modernized version of slavery that involves force, fraud, and/or a type of labor in a sexual act. The United States government defines it to be ââ¬Å"In which a sex act is forced in which the person induced has not yet been attained eighteen years of ageâ⬠(National Institute of Justice). Human trafficking is a threat to all nations and promotes breakdown of families and can support organized crime. Trafficking can occur everywhere. Human trafficking and humanRead MoreHuman Trafficking And The Trafficking901 Words à |à 4 PagesHuman Smuggling and trafficking continues to be a worldwide plague that has been, thus far been largely ignored by the international community. The paramount reason human trafficking and smuggling has festered and grown roots and spread globally. It started as a grassroots effort on the local level where women and girls (it affects boys as well) would be used and sold for sex. Eventually, greed and corruption tagged along for the ride and at that point the crimes became an organized enterprise. AtRead MoreSex Trafficking And Human Trafficking Essay1243 Words à |à 5 Pages Human trafficking brings in billions of dollars into the U.S and all around the world. ââ¬Å"The prime motive for such outrageous abuse is simple: money. In this $12 billion global business just one woman trafficked into the industrialized world can net her captors an average $67,000 a yearâ⬠(Baird 2007). The laws around human trafficking are not strict and vary depending on what country it is happening in. Human trafficking is not something that is strictly foreign, itRead MoreThe Trafficking And Forms Of Human Trafficking Essay1317 Words à |à 6 Pages2.1.2 The concept of Human Trafficking and forms of Human Trafficking Human trafficking is a complex phenomenon hence difficult to conceptualize (Maclnnis, 2012). Scholars, nations and international organizations have individually or collectively tried to define human trafficking and, not surprisingly, they disagree with one another. United States (US) for instance does not consider organ trade as human trafficking whereas the United Nations (UN) and Canada do (United States Department of StateRead MoreHuman Trafficking And Sex Trafficking1264 Words à |à 6 PagesA challenge that I took interest in is the horrifying problem that women and young girls face as victims of human trafficking and sex slavery. Women and young girls make up 98% of victims of trafficking for exploitation. Human trafficking and sex slavery is a form of modern slavery, in which traffickers profit from the control and exploitation of others. It is a multi-billion industry. Traffickers use control of others for the purpose of engaging in sexual activities and or forcing others to provideRead MoreHuman Trafficking And Human Sex Trafficking1850 Words à |à 8 Pagesof human sex trafficking come to one s mind. The United States of America is not immune to this type of horrific behavior. America is the land of the free and yet something as awful as human sex trafficking occurs in our very own backyard each and everyday. According to the Department of Homeland Security the definition of human trafficking is ââ¬Å"modern day slavery that involves the use of force, fraud, or coercion to obtain some type of labor or commercial sex actâ⬠(ââ¬Å"What Is Human Trafficking?â⬠)
Tuesday, December 10, 2019
Economy Of Australia Considered Developed â⬠Myassignmenthelp.Com
Question: Discuss About The Economy Of Australia Is Considered As One Of The Developed? Answer: Introduction: The economy of Australia is considered as one of the developed and largest mixed economies in the world having a GDP of AUD $1.67 trillion for the year 2016. The total wealth of Australia is AUD $8.9 trillion for the year ended June 2016 (Taussig, 2013). In the year 2016, Australia was regarded as the 12th largest economy in terms of the nominal GDP and regarded as the 19th largest measured by the PPP adjusted GDP standing approximately around 1.0% of the world economy. Australia is considered as the 25th largest exporter and 20th largest importer. The economy of Australia is dominated by the service sector consisting of 73% of GDP. The mining sector on the other hand comprises of 7% of the GDP along with services to mining and attaining a height of mining boom in the year 2009-10. The total amount of value added of the mining industry stood 8.4% of the GDP (Frank et al., 2015). The economy of Australia is mainly reliant on the mining and agriculture sector, which is relative to the other developed countries as the products are exported to the eastern Asian market. In spite of the recent decline, the economy of Australia has been resilient and stable since July 1991. Production Output Performance Analysis: Real GDP: Real GDP is understood as the macroeconomic measure of the value of economic output adjusted for the changing prices. The adjustment transforms the monetary value measurement and the nominal GDP into the index for the quantity of total output (Sloman et al., 2013). The real GDP of Australia stood 1204.62 billion US dollars in 2016. The GDP value of Australia stood 1.94 percent of the world economy. The GDP of Australia averaged 4.1.44 USD Billion from 1960 until 2016 and reached an all time high of 1567.18 USD billion in the year 2013. Figure 1: Real GDP of Australia (Source: Tradingeconomics.com 2017) Real GDP Growth Rate: The Real GDP Growth Rate measures the economic growth concerning the gross domestic product (GDP) from one period of to another period adjusted for inflation (Bernanke et al., 2015). The Real GDP Growth Rate is expressed in the real opposed to the nominal terms. The economy of Australia rose by 0.3 percent in the month of March quarter 2017 in comparison to the 1.1 percent growth in the quarter of December 2016. Positive assistance was made from final domestic demand and alterations that were made in the inventory were unable to counterbalance the feeble net trade and dropped in dwelling investment (Georgellis et al., 2015). At present Australia has recorded 103 quarters with only two succesive quarters of depressing growth that is regarded as the longest extend of any urbanized nation. The GDP growth rate of Australia for the year ended 2016 stood around 0.86. Figure 2: Australia GDP Growth Rate (Source: Tradingeconomics.com 2017) Real GDP per capita Analysis: The gross domestic product per capita of Australia that was last recorded for the year 2016 stood 55670.90. On analysis, it is understood that the GDP per capita in Australia is equivalent to the 441 percent of the worlds average GDP (Tradingeconomics.com 2017). The GDP per capita in Australia averaged 35885.61 USD from 2000 to 2016 and attained an all time high of 55670.90 USD in 2016. Figure 3: GDP per Capita (Source: Tradingeconomics.com 2017) Performance trend of the economy: The Australias domestic gross domestic growth of 2.8 percent in 2015-16 and reported a lower rate of unemployment of 5.6 percent and the places the country in the good position for the future. Considering the performance trend the Australian economy has continued to shift away from the resources. Australias current economic strength has depended heavily on the resource boom, which is presently transitioning into its production phase (Tradingeconomics.com 2017). From the year, 2012-13 and 2015-16 the volume of iron ore and concentrates produced stood 66.3 percent higher from 2008-19 and 2011-2012. However, the increase in the volume of commodity and lower amount of international demand have contributed in the reversing the appreciation of the Australian dollar from the mining investment boom. The GDP growth can be broken down under the constituents drivers of household consumption, government spending, business investment and trade., Therefore, the real GDP of Australia rose to 2.8 percent in 2015-16 which was primarily driven by the household consumption. In contrast to this, the business investment declined by 1.7 percent points from GDP growth. This was primarily caused by the continuation declining business investment. Government measures to achieve production output performance: The Australian government has adopted investment in physical capital with the objective of improving labour productivity since the capital productivity is relatively slow to the change. This helps in providing direct link between the physical investment and production output (Tradingeconomics.com 2017). The Australian government is also embodied in the capital stock by undertaking initiatives to improve the technological aspects. The government have adopted measures in the areas of research and development in which the growth rate of technological progress largely dependent on the present level of technology on the quantity of resources that is devoted to the generation of new ideas and inventions. The government makes investment in human capital with the objective of raising productivity with evident changes in the production process. Labour Market Analysis: Unemployment trend based on unemployment rates: The seasonally adjusted rate of unemployment for Australia remained unaffected at 5.6 percent in June for the year 2016 from an upward modification of 5.6 percent in the month of May and it is reliable with the marketplace evaluations. The unemployment rate of Australia remained at the least possible level since the October 2016 as the Australian economy added 14,000 jobs however the number of unemployed person increased by 13100 (Richardson, 2014). In the month of June, the rate of seasonally adjusted labour force participation increased to a 17th month high of 65.0 percent from 64.9 percent in the earlier period that was beyond the market anticipations of 64.9 percent. Employment rose to 12,566,900, which was marginally lower than the market projections of 15,000 increases. The full time employment increased by 62,000 to 8,356,000 whereas the part time employment fell down by 48,000 to 3,810,800 (Tradingeconomics.com 2017). Unemployment increased by 13,100 to 728,100. The total num ber of unemployed person searching for full time work rose to 500,600 and the number of unemployed person looking for part time work augmented to 227500. Definition of unemployment and types of unemployment in an economy: Unemployment can be defined as the scenario where number of people willing to work or able to work is unable to discover work at the prevailing rate of wage. Types of unemployment: Cyclical unemployment: Cyclical unemployment occurs when an economy enters in the phase of recession and with loss of large number of jobs. Frictional unemployment: Frictional unemployment takes place due to the normal turnover in the labour market and the time taken by the workers to discover new jobs. Structural unemployment: Structural unemployment arises due to the absence of the demand for a certain type of worker. This is particularly due to the mismatches of necessary skills required by the employers and the skill possessed by the workers. Advancements made in the technology majorly leads to unemployment. Types of unemployment in Australia: The main types of unemployment suffered by the Australian economy are the cyclical and structural unemployment (Pigou, 2013). The cyclical unemployment in Australia is caused by the contraction of the economic activity of aggregate demand. With fall in aggregate demand, the derived demand for labour also falls. These results in loss of jobs and workers are laid off because of the falling demand of labour. In the year 2006, a shortage of skill rose because of the mismatch between the required skills by the employers and the skill offered by the employees. A majority of those rose due to the mining boom states of the Western Australia and Queensland. Government measures adopted to achieve full employment: The Australian government adopted the policies of increasing workforce training and educations under the Apprenticeships Centre to promote the skills creation of the employees. The government also implemented the policies of school based apprenticeship systems in order to develop the apprenticeship skills in school (Argy Nevile, 2016). Funding related to vocational and school educations comprised of National Education Framework for School to increase literacy and the standards of numeracy with the Australian national training authority to enhance the skill development of Australian workers. To address the long term unemployment, the government has made several changes in the welfare and system of taxation with the objective of strengthening the incentive and obligations of welfare recipients to seek the payment of casual workers. Price level analysis: The consumer prices in Australia increased by 1.9 percent in the quarter of June 2017 from 2.1 percent in the first quarter and below the market consensus of 2.2 percent rise. The rate of inflation edged lower from 2-1/2 high in the first quarter primarily because of the slowdown in the cost of housing and transport. The annual cost increased at a slower rate for housing and transport (Ormerod et al., 2013). Cost increased further in the food and non-alcoholic beverages to 1.9 percent from 1.8 percent. Based on quarterly basis the consumer price increased by 0.2 percent, which is below 0.5 percent in the first quarter and below the market anticipations of 0.4 percent increase. It is considered as the lowest amount ever since the march quarter of 2016. The most vital rise in price in this quarter is the medical and the hospital services tobacco and bear (Tradingeconomics.com 2017). This rise was particularly offset by the falling domestic holiday travel and accommodation and -2.5 perc ent fall in the automotive fuel. Figure 4: Inflation of Australia (Source: Tradingeconomics.com 2017) Definition and typical causes of inflation: Inflation can be defined as the rise in general level prices that are paid for goods and services over the period. The main causes of inflation are either demand-pull or cost-push inflation. The major causes of demand-pull inflation are the depreciation in the exchange rate resulting in increase in the price of the imports and reduce the cost of domestic exports in the overseas nation (Barros et al., 2015). Another cause of inflation is the higher demand from monetary stimulus such as lower direct and indirect taxes due to the higher government spending. Cost-push inflation simultaneously arises due to the increase in the cost of raw materials and other components. This may be due to the rise in the price of commodity such as oil and agricultural products. Rising cost of labour is also one of the cause of inflation as the cost of wages regularly increase when the unemployment is low since skilled workers become more scarce and this drives higher level of pay. Causes of inflation in Australia: The demand side factors have influenced the degree of aggregate demand in the Australian economy. With national spending running head of the production, wide amount of shortage in goods and service appears unsold with firms cannot access the additional resources so that it can lift the total output (Cumming Johan, 2016). This results in demand side inflation. The cost-push inflation in Australia has resulted in rise wages paid to the workers. During the year, 2013 and 2014 under the new enterprise wage agreement has added cost pressure and ultimately accelerating inflation. Government measure to achieve stable price: The Australian government has adopted the policy of contraction that involve higher rate of taxes by changing the rate of interest as the method of creating an impact on the degree of national spending or aggregate demand in the economy (Azad et al., 2014). Furthermore, the Australian government has also adopted the budgetary policy involving higher taxes and reducing the government outlays. This helps in reducing the spending by raising income collected from the personal and company taxes. Conclusion: To conclude with from the analysis it is found that the Australian economy has achieved growth at a rapid pace. In spite of the global financial crisis the economy of Australia has made significant impact with lower degree of recession. The GDP per capita and GDP has been relatively high which represents that the economy has expanded at a faster rate. The Australian economy is successfully moving the direction of achieving full employment since the rate of unemployment has been relatively lower for the economy. Being an open economy the government of Australia has also attracted foreign direct investment to attain the economic expansion with successful government policies of reducing aggregate demand. Reference List: Argy, V. E., Nevile, J. (Eds.). (2016).Inflation and Unemployment: Theory, Experience and Policy Making. Routledge. Australia GDP Growth Rate | 1959-2017 | Data | Chart | Calendar | Forecast. (2017).Tradingeconomics.com. Retrieved 11 August 2017, from https://tradingeconomics.com/australia/gdp-growth Australia GDP per capita | 1960-2017 | Data | Chart | Calendar | Forecast. (2017).Tradingeconomics.com. Retrieved 11 August 2017, from https://tradingeconomics.com/australia/gdp-per-capita Australia Inflation Rate | 1951-2017 | Data | Chart | Calendar | Forecast. (2017).Tradingeconomics.com. Retrieved 11 August 2017, from https://tradingeconomics.com/australia/inflation-cpi Australia Unemployment Rate | 1978-2017 | Data | Chart | Calendar. (2017).Tradingeconomics.com. Retrieved 11 August 2017, from https://tradingeconomics.com/australia/unemployment-rate. Azad, A. K., Rasul, M. G., Khan, M. M. K., Omri, A., Bhuiya, M. M. K., Hazrat, M. A. (2014). Modelling of renewable energy economy in Australia.Energy Procedia,61, 1902-1906. Barros, R. P. D., Corseuil, C., Mendona, R., Reis, M. C. (2015). Poverty, inequality and macroeconomic instability. Bernanke, B., Antonovics, K. and Frank, R., 2015.Principles of macroeconomics. McGraw-Hill Higher Education. Cumming, D., Johan, S. (2016). Ventures economic impact in Australia.The Journal of Technology Transfer,41(1), 25-59. Frank, R. H., Bernanke, B. S., LUI, H. K. (2015).Principles of economics. McGraw-Hill Asia. Georgellis, Y. (2015, January). Regional unemployment and employee organizational commitment. InAcademy of Management Proceedings(Vol. 2015, No. 1, p. 12430). Academy of Management. Ormerod, P., Rosewell, B., Phelps, P. (2013). Inflation/unemployment regimes and the instability of the Phillips curve.Applied Economics,45(12), 1519-1531. Pigou, A. C. (2013).Theory of unemployment. Routledge. Richardson, J. R. (2014). Can we sustain health spending.Med J Aust,200(11), 629-31. Sloman, J., Norris, K., Garrett, D. (2013).Principles of economics. Pearson Higher Education AU. Taussig, F. W. (2013).Principles of economics(Vol. 2). Cosimo, Inc..
Tuesday, December 3, 2019
Welding Process free essay sample
Energy beam welding methods, namely laser beam welding and electron beam welding, are relatively new processes that have become quite popular in high production applications. The two processes are quite similar, differing most notably in their source of power. Laser beam welding employs a highly focused laser beam, while electron beam welding is done in a vacuum and uses an electron beam. Both have a very high energy density, making deep weld penetration possible and minimizing the size of the weld area. Both processes are extremely fast, and are easily automated, making them highly productive. The primary disadvantages are their very high equipment costs (though these are decreasing) and a susceptibility to thermal cracking. Developments in this area include laser-hybrid welding, which uses principles from both laser beam welding and arc welding for even better weld properties. Electron Beam Welding Introduction: Electron Beam Welding (EEW) is a unique way of delivering large amounts of concentrated thermal energy to materials being welded. We will write a custom essay sample on Welding Process or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page It became viable as a production process in the late 1950s. At that time, it was used mainly in the aerospace and nuclear industries. Since then, it has become the welding technique with the widest range of applications. This has resulted from the ability to use the very high energy density of the beam to weld parts ranging in sizes from very delicate small components using just a few watts of power to welding steel at a thickness of 10 to 12 inches with 100 Kilowatts or more. However, even today most of the applications are less than 1/2 in thickness, and cover a wide variety of metals and even dissimilar metal joints How it works: The most common Electron Beam systems used in manufacturing today are of the high vacuum design. The other machine types are: 1- Partial vacuum equipment. 2- Non-vacuum equipment. These two types are used in mass production where high output is important. The diagram shown shows the classic triode gun and column assembly. The triode gun design consists of the cathode (Filament), Bias cup (Grid) and Anode. Other sub-assembly components that contribute to the triode are: High voltage insulator Feed-through, high voltage cable and deflection coils. All these components are housed in a vacuum vessel called the upper column. The column assembly is held under a high vacuum by an isolation valve positioned below the anode assembly. The vacuum environment provides several benefits: â⬠¢Removes the bulk gas molecules necessary for a stable triode. â⬠¢Provides protection for the incandescent filament against oxidization. â⬠¢Provides a controlled environment to protect the gun against welding by product. BeamFormation:UpperColumn The beam formatting begins with the emission of electrons from the incandescently heated tungsten filament. During this process the filament is saturated by a determined amount of the electrical current. Electrons boil off the filament tip as it reaches operating temperatures and gathers in the grid cup assembly. A negative high voltage potential (acceleration voltage) is applied to the filament cathode assembly with the cathode assembly charged at 150 kV the only force preventing the electron beam from propagating is a secondary negatively charged voltage that resides on the grid cup or bias assembly. This voltage respectively lower than the accelerating voltage acts as a valve that controls the volume of electron energy that can flow from the cathode emitter to its attracting target. The anode at a positive potential is one of the attracting targets in the triode but its role is more of a beam formation device rather than a collector of electrons. The secondary target is the work piece which is usually metallic and offers a conductive path to earth to complete the circuit. The electron gun assembly design is a result of some extensive engineering studies and experimentation. Some of the early triode designs were mathematically modeled and their designs still produced today. Beam Delivery: Lower Column Other important components of the beam delivery column are the focus and deflection coils and isolation valve. The magnetic focus coil located beneath the anode assembly provides the means for squeezing the beam into a tightly focused stream of energy or can be used to widely dispersed energy resource. The deflection coil is another important component that will contribute to the latter discussion of beam control parameters but for now we will simply say that it is a steering device. The focus coil is circular in design and is concentric with the column. An electrical current is passed through the coil which produces the resultant magnetic fluxes that act to converge the electron beam. The deflection coil is configured with four separately wound coils positioned at right angles to the column. The four coils are segmented as sets (x and y) each axis becomes a separate control allowing the energizing of each axis on command, thus steering the beam. Many industrial applications require the precise manipulation of the beam energy so as to provide a pattern for processing. This is usually accomplished by superimposing an AC signal onto the four coils simultaneously therefore creating a specific pattern. The isolation valve serves to isolate the vacuum environment in the upper column from the lower. After the electron beam has passed through the lower column, it enters the chamber cavity. Another important part of the lower column of the (EBW) machine is the viewing optics, the optics are arranged in the lower column in such a manner that when viewing the beam energy through a video camera or magnified optics it gives the view from a parallel plane, giving the viewer the perception of looking down the column. Beam Interaction in Chamber Cavity: As the beam enters the chamber cavity it is aimed onto a target material placed at a determined height representative of the actual work piece. This procedure is typical in most pre-weld set-up requirements. The welding technician would then follow a process of beam alignment and beam parameter calibration. Unlike laser, the preparation is quite different in the fact that the technician must view the actual beam through the optical system in order to verify the beam alignment and focus. With a laser beam, the technician could not view the beam quality and therefore must rely on instrumentation to profile the beam energy. Once the beam has been tuned and calibrated the equipment is now ready for part processing. The focused beam of electrons is impinged at a targeted location on the weld joint at which point the kinetic energy of the electrons is converted to thermal energy. The work piece can either be stationary and the beam energy deflected or the work piece can be traversed along a desired axis of motion. This motion can be computer controlled such as a CNC table or simply a rotating mechanism can be employed. As the beam energy is applied to the moving part several physical transformations take place. The material instantly begins to melt at the surface and a rapid vaporization occurs followed by the resultant coalescence. Two welding modes are used in the (EBW): 1) Conductance mode: Mainly applicable to thin materials, heating of the weld joint to melting temperature is quickly generated at below the materials surface followed by thermal conductance throughout the joint for complete or partial penetration. The resulting weld is very narrow for two reasons: a) It is produced by a focused beam spot with energy densities concentrated into a . 010 to. 030 area. b) The high energy density allows for quick travel speeds allowing the weld to occur so fast that the adjacent base metal does not absorb the excess heat therefore giving the E. B. process its distinct minimal heat affected zone. 2) Keyhole mode: It is employed when deep penetration is a requirement. This is possible since the concentrated energy and velocity of the electrons of the focused beam are capable of subsurface penetration. The subsurface penetration causes the rapid vaporization of the material thus causing a hole to be drilled through the material. In the whole cavity the rapid vaporization and sputtering causes a pressure to develop thereby suspending the liquidus material against the cavity walls. As the hole is advanced along the weld joint by motion of the work piece the molten layer flows around the beam energy to fill the hole and coalesce to produce a fusion weld. The hole and trailing solidifying metal resemble the shape of an old fashion keyhole. Both the conductance and keyhole welding modes share physical features such as narrow welds and minimal heat affected zone . The basic difference is that a keyhole weld is a full penetration weld and a conductance weld usually carries a molten puddle and penetrates by virtue of conduction of thermal energy. Advantages: 1. Deeper and narrower: Ability to achieve a high depth-to-width ratio eliminating multiple-pass welds. 2. Low heat input: Minimal shrinkage and distortion as well as ability to weld in close proximity to heat sensitive components. 3. Superior strength: Vacuum melt quality can yield 95% strength of base material. 4. Versatility: From . 001 to 3 deep penetration welds, each performed with exceptional control and repeatability. 5. High purity: Vacuum environment eliminates impurities such as oxides and nitrides. 6. Superior process: Permits welding of refractory metals and combinations of many dissimilar metals not easily weld with conventional welding processes. Disadvantages 1. All metals which can be welded by arc processes can be also welded by Electron-Beam-Welding, including exotic ones. Equipment tends to be expensive though, but there are joints which cannot be economically welded by any other process. Finally Electron-Beam-Welding is successfully applied for repair, overhaul and maintenance of expensive items, because it has almost no influence on nearby material. . On the sides of disadvantages of Electron-Beam-Welding one must include the elevated cost of equipment, the relatively high pump-down time, the need for properly designed joints, special fixtures and expert personnel. Laser Beam Welding Introduction: Laser Beam Welding (LBW) is a modern welding process; it is a high energy beam process that continues to expand into modern industries and new applications because of its many advantages like deep weld penetration and minimizing heat inputs. The turn by the manufacturers to automate the welding processes has also caused to the expansion in using high technology like the use of laser and computers to improve the product quality through more accurate control of welding processes. Major Difference: The main difference between traditional electric arc welding processes is in the mode of energy transfer. Unlike electric arc energy transfer, laser energy absorption by a material is affected by many factors like the type of the laser, incident power density and the base metalââ¬â¢s surface condition. Two important factors to help characterizing laser welding are: ) The energy transfer efficiency, -The ratio of the heat observed by the work piece to the incident laser energy. b) The melting efficiency -The ratio of the heat to just melt the fusion zone to the heat observed by the work piece. The laser output is not electrical because does not require electrical continuity. It is also not influenced by magnetism and not limite d to electrically conductive materials. It can contract with any material and its function doesnââ¬â¢t require a vacuum nor does it produce x-rays. How it works: The focal spot is targeted on the work piece surface which will be welded. At the surface the large concentration of light energy is converted into thermal energy. The surface of the work piece starts melting and progresses through it by surface conductance. For welding, the beam energy is maintained below the vaporization temperature of the work piece material because hole drilling or cutting vaporization is required because the penetration of the work piece depends on conducted heat. The thickness of the materials to be welded is generally less than 0. 80 inches if the ideal metallurgical and physical characteristics of laser welding must be realized. Concentrated energy produces melting and coalescence before a heat affected zone is developed. When the materials to be welded are thick and have high thermal conductivity like aluminum. The advantage of having a minimal heat affected zone can be seriously affected because the heat source in this type of welding process is the energy of light, the work piece will be welded purely which means the fatigue strength of the welded joint will be excellent. Energy distribution across the beam is generated by the design of the resonant cavity, including mirror curvatures or shape and their relative arrangement. This combination results in photon oscillation within the cavity specific output beam energy patterns, these patterns are called Transverse Energy Modes (TEMs). The function of all laser beam welding processes whether they be gas (carbon dioxide, helium, neo, etc. ) or other lasing sources is based on the principles of the excitation of atoms using intense light, electricity, electron beams, chemicals and etc. The role of focusing lenses in this process is really important because it concentrates the beam energy into a focal spot as small as 0. 005 in diameters or even less. Like mentioned above there are many types of Laser Beam Welding (LBW) but the most popular types in the industry are: 1. Nd:YAG (neodymium-yttrium aluminum garnet) Laser: The Nd: YAG laser uses a man-made crystal as its active medium and produces light with a 1. 06-micron wavelength. 2. Carbon Dioxide Lasers: The CO2 laser uses a mixture of gases including CO2 as the active medium and produces light with a 10. 6-micron wavelength. 3. The Diode Laser: The diode laser uses a semi-conductor diode material as its active medium can be manufactured to produce one of several wavelengths. Industries Served: 1- Aerospace. 2- Defense/military. 3- Electronics. 4- Research development. 5- Medical. 6- Sensors instrumentation. 7- Petrochemical refining. 8- Communications energy. Advantages: 1) Deep and narrow welds can be done. 2) Absence of distortion in welds created. 3) Minimal heat affected zones in welds created. 4) Excellent metallurgical quality will be established in welds. 5) Ability to weld smaller, thinner components. 6) Increased travel speeds. 7) Non-contact welding. Laser-hybrid Welding It is a new type of welding process that combines the principles of laser eam welding and arc welding. Introduction: The combination of laser light and arc into an amalgamated welding process is known since the 1970ââ¬â¢s, but for a long time thereafter no further research and development was undertaken. Recently, researchers have turned their attention to this topic again and attempted to unite the advantages of the arc with those of the laser in a hybrid weld process. W hereas in the early days, laser sources still had to prove their suitability for industrial use, nowadays they are standard technological equipment in many manufacturing enterprises. The combination of laser welding with another weld process is called ââ¬Å"hybrid welding processâ⬠. This means that a laser beam and an arc act simultaneously in one welding zone, they influence and support each other. Laser: Laser welding not only requires high laser power but also a high quality beam to obtain the desired ââ¬Å"deep-weld effectâ⬠. The resulting higher quality of beam can be exploited either to obtain a smaller focus diameter or a larger focal distance. For the projects that are currently underway, a lamp-pumped solid state laser with a laser beam power of 4 kW is used. The laser light is transmitted via a 600? m glass fibre, in which the beginning and the end is water-cooled. The laser beam is projected onto the work piece by a focusing module with a focal distance of 200 mm. Laser Hybrid process: For welding metallic work pieces, the Nd:YAG laser beam is focused to obtain intensities of more than 106W/cm2. When the laser beam hits the surface of the material, this spot is heated up to vaporization temperature, and a vapor cavity is formed in the weld metal due to the escaping metal vapor. The extraordinary feature of the weld seam is its high depth-to-width ratio. The energy-flow density of the freely burning arc is slightly more than 104 W/cm2. Unlike a sequential configuration where two separate weld processes act in succession, hybrid welding may be viewed as a combination of both weld processes acting simultaneously in one and the same process zone. Depending on the kind of arc or laser process used, and depending on the process parameters, the processes will influence each other to a different extent and in different ways. The combination of the laser process and the arc process, there is also an increase in both weld penetration depth and welding speed (as compared to each single process). The metal vapor escaping from the vapor cavity acts upon the arc plasma. Absorption of the Nd:YAG laser radiation in the processing plasma remains negligible. Depending on the ratio of the two power inputs, the character of the overall process may be mainly determined either by the laser or by the arc. Absorption of the laser radiation is substantially influenced by the temperature of the work piece surface. Before the laser welding process can start, the initial reflectance must be overcome, especially on aluminum surfaces. This can be achieved by starting welding with a special start program. After the vaporization temperature has been reached, the vapor cavity is formed, and nearly all radiation energy can be put into the work piece. The energy required for this is thus determined by the temperature dependent absorption and by the amount of energy lost by conduction into the rest of the work piece. In Laser Hybrid welding, vaporization takes place not only from the surface of the work piece but also from the filler wire, so that more metal vapor is available, which in turn facilitates the input of the laser radiation. Advantages Laser hybrid process provides a fast welding speed and large gap capability. Other benefits include the penetration properties of laser welding and the addition of consumables and bridge-building properties of MIG. The use of consumables in the hybrid method means that the metallurgy of the joint can be influenced. This makes the method suitable for use with high-strength steels, with which consumables are needed to get the required properties out of the joint. Duplex stainless steel, employed widely by the offshore industry, can only be welded with a consumable, making it suitable with the hybrid method, but not with conventional laser welding. Conclusion The arc welding processes are cheap and reliable, but in light of the demands from modern society certain important limitations have become crucial. Many properties such as speed, heat input, and environmental aspects may not be improved further due to the limitations caused by the physics of the processes and the distortions observed in arc welding. Of equal importance are the large difficulties met in robotizing the processes where control of the individual weld-pass geometry is a key issue. Substituting with energy beam welding results in many advantages such as low distortion, high speed, and natural automation. Especially introduction of laser/MAG (GMAW) hybrid welding instead of pure laser welding increases the ability to bridge a gap and provides a significant increase in speed when welding a wide gap, and excellent weld properties are obtained. Thus, energy beam welding has bring a lot of advantages to mankind especially in manufacturing sector which then catalyst the progression of economic of one country.
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