Global economy Midterm Review Questions Assignment

Global economy Midterm Review Questions - Assignment Example phenomenon in which the business environment in a country is deregulated so as to attract investors, causing low wages, poor environmental protection and poor working conditions. Issues such as minimum wage, political autonomy and workers unions are foregone for the sake of creating a favorable working environment. This is considered to e a problem because countries with poor working conditions and low environmental protection standards are deemed best for investment. Causes of race to the bottom include the pollution problem, poor government policy influenced by MNCs and government instabilities. First, other than free trade, Rivoli argues that there is need to develop strong political policies and reforms to address political barriers. For example, in her book, she argues that having a good political framework to protect the industries in America against the sweatshops that pay their workers 50 cents an hour is a better alternative than the free trade agreement. Secondly, she says that there is need to reform the famous trade agreements that limit or inhibit exports and import. In the US for instance, there are a number of such agreements that in fact limit the importation of t-shirts. If these factors are addressed, fairness in global competition will be introduced. Manufacturers will be able to work and export their products in a fair manner. The apparel industry best captures the history of globalization by showing how a single commodity moves through various processes and markets, thereby highlighting the interconnections between markets. The industry highlights the basic concepts of globalization such as political and cultural process. Arms trade globalization occurs both in the production and consumption. Most countries spend considerable amounts for procurement of arms. This is linked to lower spending by governments on the other areas. In the context of globalization, the arms industry is escalating conflicts and the proliferation of arms has

Cash for comment Essay Example | Topics and Well Written Essays - 1750 words

Cash for comment - Essay Example Equivalently, this is to imply that given liberty of serving personal growth and interests alone without stepping over similar rights of other individuals, one may take pride in earning bucks filthy enough by the quantity and act to the extent of breaching terms of integrity. It is as if the condition imposed by the latter must be absent and related criticisms be relieved of for ‘Cash for Comment’ to prove its state of affairs blameless among involved parties, say of journalists primarily, who could be gaining mass after mass of wealth if allowed the entire freedom from elements of guilt with deliberate immodest advances. This, however, is never the case for the 1999 scandal in the field of mass communication which itself introduced the label phrase ‘Cash for Comment’ through major personalities known to have gone into certain wicked ways running counter to the intended course of noble and responsible journalism. To recall prominent names as John Laws, Alan Jones, 2UE, and the Australian Bankers’ Association is to likewise give key ideas that would in brief concretize depiction of the ‘Cash for Comment’ incident. In particular, the event marked the turning point in history of an industry for which heightened skepticisms were raised following ABC’s Media Watch program exposà © in July 1999 of Sydney’s talkback radio show host John Laws whose positive on-air opinions regarding financial institutions were alleged to have been arranged as merchandise for the sponsoring banks. Laws basically failed to disclose in public the nature of commercial negotiations made with the sponsors, leading thus to serious charges against the station’s licensee 2UE for not complying with suitable regulations set through the Commercial Radio Code of Conduct which by Australian Broadcasting Authority or ABA requires commercial radio licensees to ensure no viewpoints are misrepresented or relevant information is withheld . ABA divulged findings of breaches incurred by 2UE through Laws’s fault of promoting remarkable critique for banks and banking industry on-air which according to ABA was actually made with the objective of reducing negative comments by J. Laws â€Å"from a present average of four a week to nil, concurrently receive positive comments from Mr. Laws, over and above the paid advertisements..† (Johnson, 2000). So, during the incident John Laws, along with Alan Jones whose involvement eventually got dismissed, was in acquisition of massive sum or cash in return after granting affiliates the desired comments within the program and public forum. At this point, the presenter likely gave into a trance-like state of seeing nothing else of significance but his craft while no border distinguished his knowledge of integrity from that of editing a known existing truth. Such shameless deed of crossing the line that resulted to negligence of duty and of respect for responsible broadca sting deserves regulatory sanctions having violated the fourth section of the Broadcasting Services Act of 1992, stating â€Å"to encourage providers of commercial and community broadcasting to be responsive to the need for a fair and accurate coverage of matters of public interest and for appropriate coverage of matters of local significance.† (ABA, 2000). Similarly, the Commercial Radio Code of Conduct expressed agreement to the violation committed by the licensee based upon its requisite of guaranteeing that all advertisements be not

The Reciprocating Pump Engineering Essay

The Reciprocating Pump Engineering Essay A pump is a mechanical device which helps to move fluids including liquids or gases. It is basically a hydraulic machine which converts the mechanical energy to the hydraulic energy. The hydraulic energy is been present in form of the pressure energy. There are various types of pumps such as positive displacement pumps, velocity pumps, Buoyancy pumps, Impulse pumps. The various different pumps are also been sub-classified in various other pumps. Positive Displacement pumps are one of the most commonly used pumps. They are sub-divided in to Reciprocating and Rotary pumps. Typical types of the Reciprocating pumps are Plunger pumps and Diaphragm Pumps. The Plunger pump is also known as Piston Pumps. The Reciprocating Pumps are highly efficient pumps which are even suitable for the very high heads at low flows. It is a self priming type of pump as it can draw the fluid from the level below the suction flange if the suction pipe is not evacuated. There should be a smooth flow required for achieving a good efficiency (Chinnuraj, 2009). The complete system is based on the design of the pump. The head of cylinder is been mounted with suction and discharge valves. The fluid enters the pump through the suction valve and goes out threw the discharge valve. In suction stroke, suction valve opens when the plunger retracts. The liquid gets pushes out of the discharge valve in the forward stroke. Reciprocating system has a pulsating discharge and it totally depend on the speed of the pump which can be easily altered. The intake of the fluid in the pump is always at a constant volume. They are often used for slurry and sludge. There are various different designs from rest of the pumps. The design containing single-acting motion discharges fluid from only one side of the piston. There is only one suction and discharge per revolution of the crank shaft. The other design is the double-acting piston design where the suction and the discharge occurs on the either side of the piston resulting in double suction and double discharge per revolution of crack shaft. Classification of PD Pump Positive Displacement pump are been classified as follows: Positive Displacement Pump Rotary Pump Single Rotor -Vane -Piston -Flexible -Member Screw -Simplex -Duplex -Triplex -Multiplex -Simplex -Duplex Double Acting Single Acting Diaphragm Piston Plunger Reciprocating Pump Simplex Multiplex Multi Rotor -Gear Lobe Circumferential Piston -Screw (Gates, 2010) Working Principle of Reciprocating Pump The working principle of the Reciprocating pump is very simple; it operates on the principle that a volume of liquid would be displaced by solid equal to its own volume. The mechanical energy is been converted in to the pressure energy and takes place due to the suction of the liquid into the cylinder in which the piston is having a reciprocating motion (linear motion-threw and fore). This exerts the thrust on the fluid and hydraulic energy gets increased gradually. In single acting reciprocating pumps, a single piston moves forward and backward in a closed tight cylinder. The linear motion of the piston in the cylinder is been given by connecting piston to the crank with the help of a connecting rod. An electric motor is been used to give motion to the crank and the rotary motion is been converted to the linear motion by the help of the connecting rod. The working principle is somewhat similar to the car engines where the piston has the same movement threw some similar kind of motio ns. In Reciprocating Pump, the suction valve allows the fluid to enter where as the discharge valve tends to discharge it from the cylinder (Chinnuraj, 2009). http://www.lcresources.com/resources/getstart/pump.gif Fig 01: Working Principle of Reciprocating Pump (Getting Started in HPLC, 2001) Types of Reciprocating Pumps The Reciprocating Pumps are usually classified as follows: Direct or Indirect acting Simplex (single) or duplex (double) Single   acting   or   double   acting High pressure or low pressure The direct acting pumps are one of the most common type of pump been used. It is been known so as in the particular design the pump rod is a direct extension of the piston rod in which the lower end is been directly connected to the piston in the cylinder. Single and Double action pumps is as mentioned earlier. Single action has a single suction and a single discharge per revolution and Double action pump has two suctions and discharges per revolution. Applications Reciprocating Pumps have a very large contribution to the society with plenty of uses. They are been used for no. of small and large applications including irrigation, chemical movement, sewage movement, flood control and marine applications and even many more. Designing factors like size and type of pump depends on the usage. They are been used in various purposes such as: High pressure jets: The purpose of pumps used is producing a direct high jet pressure of the fluid. The inlet flow is at a constant flow and pressure but the discharge at a high velocity and therefore results to high amount of pressure. Chemical Injection: The Reciprocating Pumps are even used in the chemical industry where they need to inject the chemical in a certain flow or pressure. It is been used at very high precise and accuracy Irrigation: The pump is usually used in farms and gardens to distribute water throughout equally and automatically without any sort of manual efforts. Sewage movement: The pump are been used to move the slurry or sewage material in a very easy and automatic way. The main advantage is the time constraint. It takes very less time as well as it is very cheap compared to other techniques. Marine application: The vast amount of usage is being the marine sector where they need to use water movement from one part to other through a pump. The pump is very easy and compact source of product which can be installed very easily and without any maintenance in future. In marine field pump is used for: Lubricating oil transfer Fuel oil transfer Auxiliary circulating and condensate. Domestic uses: Reciprocating pump is even used as domestic purposes. In olden days it was very common to use a hand pump which was a type of reciprocating pump with help of which we can pull the underground water for various purposes such as home usage, irrigation, construction, small scale industry and many more. Discharge and Pressure Characteristics The working principle and the characteristic is been keenly observed earlier. It is been very easy to analyse the discharge and pressure constraints of reciprocating pumps. The discharge of the reciprocating pump is not uniform and stable. The discharge characteristic depends on: Head flow of fluid Fluid density Speed of reciprocating piston Pump size and design The discharge is completely non-uniform and throttling. The pulsating property of the discharge fluid is seen. This is because the piston moves at a high velocity hitting the fluid out wards and the hitting of the piston is not a continuous act which can give a uniform pressure outlet. Despite of vital use, the reciprocating pump still encounter pulsating pressure which is been seen at the suction and discharge lines. This pulsating feature is result of the interaction between unstable flow of fluid and the dynamic characteristics of the fluid particles. Pressure pulsating in the suction line can lead to the cavitation, either in the line itself or in the cylinder chamber. If cavitation is been experienced at the start of the piston stroke than the piston loading and the crank assembly can fail. Because of all this factors it reduces the life of the pump and also affects the safety conditions (K A Edge, 1997) Pump Performance and Efficiency The head of flow against which the pump works is called total head, H. The total head of the pump is the energy imparted to the liquid by the pump. H = hd hg Therefore, the effective head of a pump is expressed by the following equation: H = Equation 1 (Sorensen, 1969) This design principle of the pump work similarly as that of the turbines. The energy of supplied to the pump by the rotating shaft to move the piston inside the cylinder, in terms of bhp: Energy, e = = The capacity of the pump is proportional to its displacement per unit time, D. Assuming 100% of the hydraulic efficiency of the pump, the displacement of the pump is calculated. The displacement is the calculated capacity of pump which is proportional to: Cross-sectional area of piston, A Length of the stroke, S No. of cylinders, n Pump speed in rpm (gallons per minute) D = (A ÃÆ'- S ÃÆ'- n ÃÆ'- rpm) / 231 In case of double acting pumps, the cross sectional area is twice to be taken in to account from which the cross sectional area of piston rod (a) is subtracted. In double acting pumps, D = ((2A a) ÃÆ'- S ÃÆ'- n ÃÆ'- rpm) / 231 The volumetric efficiency of the pump is expresses in terms of percentage. It is directly proportional to the ratio of the total discharge volume to piston displacement. The ratio (r) is equal to (c + d)/d where: D = volume displaced by piston C = Additional volume between the discharge and suction valves. So it is clearly seen that smaller the ratio, the volumetric efficiency is tend to be better. Mathematically it is expressed as: VE = 1 (P ÃÆ'- b ÃÆ'- r ) S Where P is pressure B is the liquid compressibility factor R is volume ratio S is the slip. (Joe Evans, 2004) Losses in Reciprocating Pump There are various losses which are been encountered in the pump such as: Frictional losses Head losses Heat transfer losses The various losses occur due to the friction and the movement of the fluid. It depends on the head flow of fluid, density of the fluid, piston speed and the fluid suction capacity as well as discharge. There are lots of constraints been involved here, but it simply can be minimised but not 100% avoided. Advantages Easy in working Inexpensive Compact and Easy to install Low maintenance Works at high speed and at low power Disadvantages The major disadvantage of the reciprocating pump is that it has a discontinuous discharge flow which with variable pressure and hence it adversely affects the potential of the pump usage. There are various techniques been used to minimise the pulsating feature but it still tend to create problems. There are some technical ways used to minimise it by using sensors or throttle valves which keeps the discharge pressure uniform, but it does affect the overall flow and creates a kind of friction to the overall discharge pressure. Secondly, it has a disadvantage that it is prone to flow separation at the lowest pressure point in the system. The design of the system is such that this problem would be there and cannot be solved. The various different tries and practical experiments to minimise it would not work till the design is not thoroughly changed. In spite of all this disadvantages it is still a very useful product and widely used.

Good and Evil in Beowulf Essay -- Epic of Beowulf Essays

Good and Evil in Beowulf   Ã‚  Ã‚  Ã‚  Ã‚  In Beowulf, the conflict between good and evil is the poem's main and most important aspect. The poet makes it clear that good and evil do not exist as only opposites, but that both qualities are present in everyone. Beowulf represents the ability to do good, or to perform acts selflessly and in help of others. Goodness is also showed throughout this epic as having the ability to cleanse evil. Even though evil is presented by Grendel, Grendel's mother, and the dragon, who are filled with a desire to act against people and ultimately destroy them. Even pride, a human quality, is presented in Beowulf as a sign that evil exists.   Ã‚  Ã‚  Ã‚  Ã‚     Ã‚  Ã‚  Ã‚  Ã‚  Beowulf takes it upon himself to announce several great deeds that he will perform to help countries in need. One of these deeds is his offer to King Hrothgar, in which he proposes to slay Grendel. Beowulf states, "Single-handed I'll settle the strife!" In this statement, Beowulf is simply stating that he will kill this evil creature, Grendel. Another selfless act Beowulf states is that he will slay Grendel's mother. Beowulf declares, "And I give you pledge, She (Grendel's mother) shall not in safety escape to cover." Beowulf promises to see to it that Grendel's mother will be killed. After Beowulf becomes king in Geatland, he shows his great ability once more by pledging to kill the fire-dragon. "The ring-prince scorned to assault the dragon," the poet said. Beowulf is said to have pled...

Criticism Ecocriticism

Ecocritics investigate such things as the underlying ecological values, what, precisely, is meant by the word nature, and whether the examination of â€Å"place† should be a distinctive category, much like class, gender or race. Ecocritics examine human perception of wilderness, and how it has changed throughout history and whether or not current environmental issues are accurately represented or even mentioned in popular culture and modern literature.Other disciplines, such as history, philosophy, ethics, and psychology, are also considered by ecocritics to be possible contributors to ecocriticism. William Rueckert may have been the first person to use the term ecocriticism (Barry 240). In 1978, Rueckert published an essay titled Literature and Ecology: An Experiment in Ecocriticism. His intent was to focus on â€Å"the application of ecology and ecological concepts to the study of literature. †(Reprinted in The Ecocritism Reader on p. 107) Ecologically minded individu als and scholars have been publishing progressive works of ecotheory and criticism since the explosion of environmentalism in the late 1960s and 1970s. However, because there was no organized movement to study the ecological/environmental side of literature, these important works were scattered and categorized under a litany of different subject headings: pastoralism, human ecology, regionalism, American Studies etc.British Marxist critic Raymond Williams, for example, wrote a seminal critique of pastoral literature in 1973, The Country and the City, which spawned two decades of leftist suspicion of the ideological evasions of the genre and its habit of making the work of rural labour disappear even though Williams himself observed that the losses lamented in pastoral might be genuine ones, and went on to profess a decidedly green socialism.Another early ecocritical text, Joseph Meeker's The Comedy of Survival (1974), proposed a version of an argument that was later to dominate ecoc riticism and environmental philosophy; that environmental crisis is caused primarily by a cultural tradition in the West of separation of culture from nature, and elevation of the former to moral predominance.Such anthropocentrism is identified in the tragic conception of a hero whose moral struggles are more important than mere biological survival, whereas the science of animal ethology, Meeker asserts, shows that a â€Å"comic mode† of muddling through and â€Å"making love not war† has superior ecological value.In the later, â€Å"second wave† ecocriticism, Meeker's adoption of an ecophilosophical position with apparent scientific sanction as a measure of literary value tended to prevail over Williams's ideological and historical critique of the shifts in a literary genre's representation of nature. As Glotfelty noted in The Ecocriticism Reader,[page needed] â€Å"One indication of the disunity of the early efforts is that these critics rarely cited one anot her’s work; they didn’t know that it existed†¦Each was a single voice howling in the wilderness.† Nevertheless, ecocriticism—unlike feminist and Marxist criticisms—failed to crystallize into a coherent movement in the late 1970s, and indeed only did so in the USA in the 1990s. [citation needed] In the mid-1980s, scholars began to work collectively to establish ecocritism as a genre, primarily through the work of the Western Literature Association in which the revaluation of nature writing as a non-fictional literary genre could function.In 1990, at the University of Nevada, Reno, Glotfelty became the first person to hold an academic position as a professor of Literature and the Environment, and UNR has retained the position it established at that time as the intellectual home of ecocriticism even as ASLE has burgeoned into an organization with thousands of members in the US alone. From the late 1990s, new branches of ASLE and affiliated organiz ations were started in the UK, Japan, Korea, Australia and New Zealand (ASLEC-ANZ), India (OSLE-India}, Taiwan, Canada and Europe.Definition[edit] In comparison with other ‘political' forms of criticism, there has been relatively little dispute about the moral and philosophical aims of ecocriticism, although its scope has broadened rapidly from nature writing, Romantic poetry, and canonical literature to take in film, television, theatre, animal stories, architectures, scientific narratives and an extraordinary range of literary texts.At the same time, ecocriticism has borrowed methodologies and theoretically informed approaches liberally from other fields of literary, social and scientific study. Glotfelty's working definition in The Ecocriticism Reader is that â€Å"ecocriticism is the study of the relationship between literature and the physical environment† (xviii), and one of the implicit goals of the approach is to recoup professional dignity for what Glotfelty ca lls the â€Å"undervalued genre of nature writing† (xxxi).Lawrence Buell defines â€Å"‘ecocriticism’ †¦ as [a] study of the relationship between literature and the environment conducted in a spirit of commitment to environmentalist praxis† (430, n. 20). Simon Estok noted in 2001 that â€Å"ecocriticism has distinguished itself, debates notwithstanding, firstly by the ethical stand it takes, its commitment to the natural world as an important thing rather than simply as an object of thematic study, and, secondly, by its commitment to making connections† (â€Å"A Report Card on Ecocriticism† 220).More recently, in an article that extends ecocriticism to Shakespearean studies, Estok argues that ecocriticism is more than â€Å"simply the study of Nature or natural things in literature; rather, it is any theory that is committed to effecting change by analyzing the function–thematic, artistic, social, historical, ideological, theoret ical, or otherwise–of the natural environment, or aspects of it, represented in documents (literary or other) that contribute to material practices in material worlds† (â€Å"Shakespeare and Ecocriticism† 16-17).This echoes the functional approach of the cultural ecology branch of ecocriticism, which analyzes the analogies between ecosystems and imaginative texts and posits that such texts potentially have an ecological (regenerative, revitalizing) function in the cultural system (Zapf, â€Å"Literary Ecology†). As Michael P. Cohen has observed, â€Å"if you want to be an ecocritic, be prepared to explain what you do and be criticized, if not satirized. † Certainly, Cohen adds his voice to such critique, noting that one of the problems of ecocriticism has been what he calls its â€Å"praise-song school† of criticism.All ecocritics share an environmentalist motivation of some sort, but whereas the majority are ‘nature endorsing' (as Kate Soper puts it in â€Å"What is Nature? † (1998)), some are ‘nature sceptical'. In part this entails a shared sense of the ways in which ‘nature' has been used to legitimise gender, sexual and racial norms (so homosexuality has been seen as ‘unnatural', for example), but it also involves scepticism about the uses to which ‘ecological' language is put in ecocriticism; it can also involve a critique of the ways cultural norms of nature and the environment contribute to environmental degradation.Greg Garrard has dubbed ‘pastoral ecology' the notion that nature undisturbed is balanced and harmonious (â€Å"Ecocriticism† 56-58), while Dana Phillips has criticised the literary quality and scientific accuracy of nature writing in â€Å"The Truth of Ecology†. Similarly, there has been a call to recognize the place of the Environmental Justice movement in redefining ecocritical discourse (see Buell, â€Å"Toxic Discourse†).In response to the question of what ecocriticism is or should be, Camilo Gomides has offered an operational definition that is both broad and discriminating: â€Å"The field of enquiry that analyzes and promotes works of art which raise moral questions about human interactions with nature, while also motivating audiences to live within a limit that will be binding over generations† (16).He tests it for a film (mal)adaptation about Amazonian deforestation. Implementing the Gomides definition, Joseph Henry Vogel makes the case that ecocriticism constitutes an â€Å"economic school of thought† as it engages audiences to debate issues of resource allocation that have no technical solution.

Benefits and challenges of labour migration

Migration of people to other countries in search of employment has occurred all through history and it is by no means a new phenomenon. For many of migration workers, migration is a real lifeline, but all too often, they still face exploitation and abuse. Forced labour, low pay, bad working conditions, virtually no social protection, and denial of freedom of association and trade union rights, discrimination, xenophobia and social exclusion – these are just some of the woes that rob migrants of the benefits they could have gained from working abroad. The countries in question can be classified according to their status as sending or receiving country in correspondence to their level of social and economic development. Workers move between them, cascading from poorer to richer countries. In each of the countries, they mainly take jobs in labour-intensive sectors with low skill requirements and low pay. These are most of all construction, agriculture, hotel and catering as well as domestic services. The United Nations Convention on the Rights of Migrants defines a migrant worker as a â€Å"person who is to be engaged, is engaged or has been engaged in a remunerated activity in a state of which he or she is not a resident†. But there is considerable conceptual difficulty in defining a migrant. Migration of labourer takes different forms. In one end, the place of working and residence of the labourer may be different, and the distance covered by daily commuting. At the other end, the worker’s may move permanently from their places of birth or usual place of residence, maintaining little or no contact with their places of origin. Between these two ends, people move away for differing periods of time. Based on how long they are away from their place of origin, the migrants are distinguished as ‘permanent’, ‘semi-permanent’ and ‘temporary’. Labour migration belongs to temporary migration, which is likely to stay away from their places of origin for more than a few months in a year. The temporary migrants are also known as ‘short duration’ migrants, ‘seasonal’ migrants or ‘circulatory’ migrants. The decision to migrate for economic reasons can have both positive and negative consequences. Migrants may secure a better income, have access to better social services, and be able to provide a better education for their children or benefit from the enrichment of becoming a member of a transnational community at ease in different cultures. However, migration may also cause family disruption when family members have to stay behind, and may involve sacrificing a familiar lifestyle and becoming a â€Å"stranger† in a new country. The complexity of the present day migration stream has intensified with distinctions between migrant workers, trainees, tourists, refugees and displaced persons becoming increasingly blurred. The term â€Å"migrants† appears to be broader than the term ‘migrant workers' and is increasingly used in international discussions of human rights. The traditional explanation of migration as a movement from poor to rich nations is too simplified. There are both economic and non-economic factors affecting these flows. International migration has contributed to growth and prosperity in both host and source countries. Migrant worker remittances represent the second largest international monetary trade flow, exceeded only by petroleum. Migrants also provide a valuable source of semi-skilled and unskilled labour to many industrialising countries and provide a source of highly skilled labour to advanced countries, thereby assisting the latter in maintaining economic competitiveness. Labour migration policies differ from other migration policies directed at migration flows that may also have an impact on labour markets, for example refugee and family reunification, in the sense that they do not have humanitarian objectives but apply economic criteria with a view to responding to labour market needs. Governments at all points on the migration spectrum increasingly recognize the potential of regulatory mechanisms to maximize the positive impact of labour migration. Many sending and receiving countries are developing their regulatory capacities to manage labour mobility by considering the interests of respective governments, societies, and the migrant. Positive tensions for receiving countries: raise total output and incomes in the rich, host countries; increase efficiency in the use of the world’s resources all around, in rich and poor countries; increase the supply of entrepreneurship and stimulate the creation of small business; increase savings, investment, and human capital formation in the rich countries; accelerate the pace of innovation; increase the flow of remittances to poor countries; alleviate the economic problems associated with the aging population in rich countries. Globalization is a major driving force of international labour migration. Globalization has made migration much easier through better communications, dissemination of information through mass media and improved transport. Countries are at different stages of demographic transition, with developing countries typically having younger populations than developed countries. One of the most frequently cited costs of migration is so-called ‘brain drain’ — the loss of educated workers with valuable skills, which can impose large losses on governments that bear the costs of education and training. Brain drain is potentially a concern for all economies, both developing and developed, with some developed economies experiencing significant rates of skilled emigration. The greatest global concern in the area of international labour migration is the unprecedented rise in irregular forms of migration that has occurred in recent years. The numbers of unauthorized migrant workers are increasing in virtually every part of the world. A large proportion of labour migration occurs illegally, aided and abetted by a clandestine and often criminal industry. Increasingly, governments of both sending and receiving countries are developing regulatory mechanisms to manage labour migration. These include selective recruitment policies by countries needing labour, and strong marketing and overseas employment strategies by countries supplying labour. Migrant workers benefit host countries in a number of ways. The overall economic impact of all migrant workers to the UK for example suggests that they make a positive net contribution of around  £2.5 billion to the public accounts. There are huge implications for sending countries as a result of out-migration, the most crucial of which are the loss of expertise and skills. This brain drain is particularly acute in developing countries, especially where the move abroad is permanent. Public services, such as health, education and social services, are losing large numbers of skilled workers to migration. Structural changes and decreasing investment in the public sector has increased the pressure on public sector workers to migrate, as shown by trends in the health and education sectors. Although many economic migrants work in relatively low-paid jobs they regularly send money home to their families and relatives. However, it is difficult to estimate the scale of these remittances to sending countries because of the often informal manner in which they are returned, but there is little doubt that they contribute to the national income of the countries involved, and act as a stimulus to longer-term economic growth. Migrant workers who return home bring experience and knowledge from working in another country. This benefits the home country as a whole by adding to its pool of talented workers, particularly where the skills are relevant to the needs of the home economy and the migrant workers are willing to use them upon return. It also benefits the individual worker who will have developed through contact with people possessing a range of human, intellectual and professional skills. Access to educational and language courses in the host country should open up opportunities for career promotion at home and assist the personal development of each worker. Bibliography International Organisation for Migration. 2005. World Migration 2005. Costs and Benefits of International Migration. Kothari, U. (2002). Migration and chronic poverty. Chronic Poverty Research Centre. Institute for Development Policy and Management. University of Manchester. Working Paper No. 16. Linard, Andre. (1998). Migration and globalization: The new slaves. Brussels: ICFTU, July. Stalker, Peter. (2000). Workers without frontiers: The impact of globalization on international migration. International Labour Office, Geneva. World Economic and Social Survey. (2004). International migration trends Chapter11. World Health Organisation. Health and Human Rights Publications Series. Issue No.4 (December 2003). International Migration, Health and Human Rights.