The Economy of China (Globalization Effect) Essay Example for Free

The Economy of chinaw be (Globalization Effect) EssayThe personal effects of globalisation on sparing maturation and the quality of life in China. China holds the scrap largest providence in the world, measured by Purchasing Power Parity (a technique used to determine and compare the relative value of different currencies). From the late(a) 1970s, the Chinese economy has become more market orientated, rather than its former closed and planned political system. This change has played a major(ip) map in the development of their economy and impact of globalisation. At present, it is the worlds fastest growing major economy. Growth rates in the Chinese economy fall in averaged 10% throughout the past 30 years. By utilising Chinas perfect environment for manufacturing with low minimum income levels compared to other(a) countries, and little to no policies surrounding pass place health and safety, in 2010 China became the worlds largest exporter. In 2010, 19. 8% of the worlds manufacturing output was produced by China, and Industry and Manufacturing account for 46. 8% of Chinas GDP. Apart from the thriving Manufacturing industry, China also produces 45% of the worlds steel and is the worlds third largest Automotive Manufacturer.Over invigorated years, Chinas urban wages need received a 13-19% increase to an average of $2472USDp. a. The Chinese Economy has gained both benefit and been dis valued by globalisation trends. One advantage is China has received extensive tallys of high GDP over recent years, although it sometimes due to the over exploitation of their unbelievably cheap labour compared to other countries. China has become almost an essential to the global supply chain because of its cheap labour leading to the massive growth we have seen over recent years.Other Positive effects of globalisation include the improvement of living standards due to higher rent and therefore larger income and contribution to the economy. The amount of function in china has increased due to the rise in growth and creation of TNCs and movement of production due to globalisation. This means that in pose to meet demands, they need to create more jobs which is suited best in China because of low minimum income levels Negative effects of Globalisation on China include environ psychical changes and urbanisation. The Chinese Environment has been modifyd due to rapid pollution and industrialisation consequences.The growth of industries specializing in manufacturing has caused the pollution of the air, ground and permanent damage on the surroundings of these factories due to production processes such as burning or pollution from capital goods. The growth of urbanisation was a result afterward the rapid increase in jobs around cities, but this can also lead to the lowering of standards of living and the amount of jobs and resources available elsewhere. The urban cities are futile to provide necessities and services the population need. By the e nd of 2012 52.6% of the Chinese population had become urbanised, an increase from the former 26% in 1990 . Although currently, the cities cannot provide for the amount of plenty urbanising, the government has aimed to create services, increase availability of necessities and support a range of mass transit around and inside the city as a part of their 5-year-plan for 2011-2015. The creation of low-income apartments is also being accommodated to support the lowest income earners and reduce homelessness. Another problem with this sudden spark in urbanisation is the lowering of workplace safety regulations yet to be created.The people are working in factories with very poor standards which reduce hygiene and can also cause mental issues such as suicides. The Chinese Economy has implemented particular strategies in order to shape up and stabilize the economic growth and development they have received. These policies and strategies are a result of increasing demand because of globalis ation in China. The introduction of the Open door policy (essential opening china into a mass of at once protected foreign direct investment) created a huge utilisation of Chinese labour.Chinese capital and labour resources have become efficiently allocated, which then has greatly boosted economic growth and productivity. The Chinese economy then strategically utilised their obvious comparative advantage in export orientated and labour intensive industries. The Chinese Economys rapid growth is due to creation of particular strategies such us export Incentives and decentralisation of government. Export Incentives are monetary, tax revenue or legal motivations designed to encourage businesses to export certain types of goods or services.This large labour force, huge investments in efficient technology and the introduction of subsidies and incentives have created the perfect environment for mass growth of this emerging economy. Chinese exporting alone has generated up to a staggering 36 per cent of Chinas GDP (2006). Since the decentalisation of authorities (the process of redistributing, powers, people or things away from the government) the Chinese GDP per capita has risen from its previous $674 in 1978 to $5,085 in 2004 (ppp adjusted).That is over 7 and a half times greater than the previous recording. This change in government, liberalization of prices, reduction in agriculture resources, and integration into world markets, had proved to be a major cause of the Chinese economic boom over the past 30 years beginning with the open door policy The use of Special Economic Zones in china created an ability to alter the policies and investments in areas suited. For example, lower taxes and lower tariffs and other protection policies were introduced in order to encourage the exportation of technology.Their immediate succeeder fuelled the way for more specific zones in order to utilise the economic boom they were currently experiencing. The implementations of a practise kn hold as the household responsibility system was a specific quota for agricultural demand created by the government in order to remain self-sufficient in agricultural goods, but hold on to redistribute their resources to other more profitable and efficient areas. The farmers and producers were given compensation for completing these merit goods that compared to other industrialised productions, were not very profitable.These strategies allowed the Chinese people and economy to thrive during economic boom but also increase their standard of living. The Chinese Government has introduced a way to change economic strategies and policies in order to relate to the current economic activities. This plan is called the 5-year-plan, a set of policies that have to remain active for the remaining 5 years until they are reassessed for the new economic activities. This 5 year plan applies for all regions of china, and is used in order to map strategies for economic development, sett ing growth targets, and launching reforms.The 12th 5 year plan (2011-2015) outlines their planned urbanisation amount, GDP growth and estimated output from industries and the building of new low-income apartments to reduce poverty and increase the standard of living for the Chinese Population. The policies can also aim to stabilize their current growth, make incomes more equal and improve social infrastructure. The Chinese government believe that the increase of employment and reduction in unemployed population is the top priority to create stability in their rapidly growing economy.By the end of 2005, the registered unemployment population in urban areas reached 8. 39 million, and the registered unemployment rate in the urban areas was 4. 2 per cent. In order to counteract the growing unemployment, The Chinese Government applied structural proactive employment Policies in order to create incentive and encourage unemployed members of the Chinese population to look, create, or innova te their own employment These practises were used to promote the economic growth but also increase the poor standard of living in China.These included 1. Encouraging the unemployed to start up their own businesses. Reducing taxes and charges, plus small loans with discounted interests created a perfect environment and incentive for the Chinese unemployed to stimulate the economy and its growth. 2. Exempting and reducing taxes on enterprises willing to employ disadvantaged unemployed people. 3. Offering particular insurance subsidies for flexible employment terms. Evaluation of Economic Growth and development StrategiesStrategies used by the Chinese Government are all aimed to create, stabilise and promote growth of the Economy and the quality of life of the Chinese people. The Open Door policy has unlocked the swift growth of the Chinese Economy by allowing the flooding of Foreign calculate Investment. With an increase of Chinas GDP per capita from $153 to $1284 , this single indic ator outlines the success of opening China to Foreign Direct Investment. The open door policy has also created an opening for greater employment, income and therefore better living standards for the Chinese population.This is because the open door policy allows more TNCs and large enterprises to base their factories and outlets around the Chinese population. Export and business incentives have also fuelled a large amount of success though the encouragement of arrive at the technical optimum in economies of scale, and employing more people, once again, creating more jobs and increasing living standards of the Chinese population. The Decentralization from government is a strategy that started the growth they have received and the increase of economic development in China.Through this decentralisation, the redistribution of income and resources has unlocked the flood for foreign direct investment, creation of employment and increased the living standards of the population. The 5 year plan has fulfilled its potential by maintaining the economic stability of china, whilst still creating growth. Through the increase of GDP, employment rates, and living standards of the Chinese population, it is obvious that the ever-changing of political policies and goals have succeeded in guiding the Chinese economies growth.This planning allowed the government to change into a market orientated system whilst still keeping the benefits of planning goals, rates and living standards to predict the future of the Chinese economy. The strategies under the Proactive employment policies are used to create jobs and stimulate the economy, whist also fall unemployment and increasing the living standards of the Chinese population. Not only has the policies reduced the people unemployed, but they also can be used to raise the minimum income.Overall, the effects of globalisation on economic growth and the quality of life in china have been mostly benefiting. Through the introduction of new employment, high income and standards of living, and the decentralization of the Chinese government, China continues to gain expediential growth over any other country in the world. The industrialisation of China has proven to be a of import time for reassessing political strategies and adding policies to benefit the Chinese population.

WAN Protocols Case Essay Example for Free

WAN Protocols Case EssayWAN Protocols are the bannerised method of sending data between computers. The communications communications protocol exit determine how the data is compressed, the error checking to be used, how the sending device will indicate that alone data is sent, how the receiving device will declare its authoritative everything.The WAN protocols are found in The Internet Protocol Suite. They are shown below in the diagram showing where they lie in the 4 bed transmission control protocol/IP Model. Sometimes, the TCP/IP protocol will be extended to include the corporeal horizontal surface also, but this is fairly uncommon and all protocols will work over all medias. Just like the OSI feigning, each protocol essential pass the data down the layers to send out breeding and then send up the layer to receive information. So for example, the File Transfer Protocol will pass its data down to TCP which will pass it down to IT, which will pass it down to Ethernet which will place it on a physical media such as coaxial cable.To receive the data back, it must travel back through the stacks back to FTP. Each of the protocols on each stack will have its own set of tasks that it must carry out before sending the data on. Using this set group of protocols ensures that computers are capable of communicating between each other and consequently allows compatibility across devices. It is only when manufacturers stray away from these set protocols that compatibility problems will occur.Figure 1 The Protocols and their Relationship with the TCP/IP ModelThe OSI ModelThe TCP/IP Protocol suite does not directly map to the OSI model as TCP/IP relies on four layers and the OSI model uses 7. The top three layers of the OSI model map straight to the Application, Presentation and the Session layers of the TCP/IP Suite. Most of the protocols mentioned on this information sheet are found at the application layer of the OSI model FTP, HTTP, SNMP, Telnet are all found here.The transport layer, containing UTP and TCP is the same on both models. The ne dickensrk layer is the actual Internet Protocol, as salutary as a few older alternatives such as X.25.The data link layer is the same and are the protocols controlling the actual transfer onto the physical line which is the physical layer that does not appear on the TCP/IP model as it does not care about the physical hardware.The TCP/IP Model squishes the top three layers of the OSI Model onto a single layer.Figure 2 Protocols and their Relationships with the OSI ModelEvaluation of ProtocolsAlmost all of the protocols of the past join of decades are still in use in one way or another. Many have gained favoriteity as they surpass the capabilities of their older equivalents and some are a lot less common than they used to be. As the uses of WANs become more complicated, so must the protocols cosmos used to provide the services expected. In general, older versions of protocols have been phase d out and replaced by updated versions with new capabilities for the WANs they are placed on.HTTP is the standard method of transferring all sorts of webpage across the web. To do this it must reach across to servers to ask for data and then present it using whatever protocol the page is displayed in. For example, a HTML page must be displayed in HTML. A page linking to a zip file will require an unzip based program to handle it.FTP is an unsecured method of transferring files across the network. It is not considered a good method for secure documents to be sent as any security that has been affixed git very easily be decrypted and the contents can easily be viewed. All information sent along with the file, for example passwords or destination are not encrypted and are sent in standard text. This means that anybody with access to the network could pull the file down and check its contents. It sends the file without checking with the other computer if the entire file has been recei ved. Some clients will add an extra level on top of the FTP file that can calculate and check for file completion but this has to be enforced by both clients and is infrequently used. FTP is not really suitable for regular business situations. FTP replaces Simple File Transfer Protocol.Telnet is a method of connecting two computers together via a remote connection. Usually, the connection is aimed at a headless server. Once the connection is established using Telnet software, the user has access as though they are in front of that computer. SSH has vastly replaced Telnet because of its security problems across networks that are untrusted. Telnet is frequently used in troubleshooting situations where the required software is not available on both computers. Telnet is generally not used so much by businesses anymore as it has been superseded by SSH in most secure network situations.SMTP is a text based protocol where everything in the email is bundled together and sent. The email is s ent to a remote server which pushes the email down to the specific DNS. It relies on DNS to find the correct domain name for the recipient and then filters to find the correct username at that domain. As it is a push protocol and not a pull protocol like POP3 or IMAP, it usually requires other protocols to work alongside it. SMPT does not however, have a successor and is considered a staple protocol in the TCP/IP Protocol family.SNMP is the network management protocol. It relies on a systems being managed by other systems. A piece of software called an operator runs on the user computers and this sends information back to the managing systems via SNMP. The system is intentional to monitor available resources and to keep a check on how the users computers are acting. When this protocol was offshoot developed i.e. SNMPv1, its role was simple just to simply monitor the network. It included no security or integrity to ensure that the data being bespeak was from the correct computer s and hadnt been tampered with in transit apart from an unencrypted password and so was constantly criticized for its security problems. SNMPv2 improved slightly on this issue, and enhanced security was also added. The top executive to talk between two managing systems also added the ability to check the integrity of the data being sent as it was possible to check past conduct against new behaviour.The newest version, SNMPv3 which was released in 2004, adds this extra layer of security for managements piece of mind. This means that it is the securest version to date and is therefore considered industry standard with all old versions being deemed obsolete.NNTP is the standard protocol for reading and posting Usenet submissions. The last update was in 2006 and this further improved the protocol and ensures that it stays the standard method of accessing newsgroups. This protocol is popular with the types of businesses that require access the news posting sites these are particularly popular with computing based businesses. The IMAP protocol is capable only reading and so is not a viable alternative.X.25 is a packet switching protocol that predates IP. It is still found in situations where an extremely reliable system is required such as EPOS systems that allow businesses to take debit and credit cards. It is also popular in the developing world where it the cheapest and most reliable method of connecting to the internet. It is much gradual than IP as it requires all of its packets to be received before moving the packets again.IP is the current industry standard packet switching method and was designed in 1981. It is a network level protocol that splits data into packets, addresses them and sends them forward. IP works closely with TCP to ensure that the data packets are received decent as it sends the packets without ensuring they are received. All other protocols will work through IP as it converts upper layer data into packets. IPv4 is the current version in use, but users are being encouraged to move towards IPv6 as it allows more addresses to be used.

Vygotskys Work on the Zone of Proximal Development

Vygotskys Work on the Zone of Proximal ontogenesiscritically evaluate the contribution of Vygotskys flow on the Zone of Proximal DevelopmentVygotskys original ideas on the relationship among kid nurture and stoping, leading to his supposition of the zone of proximal development, have become hugely influential in education and program line practice, spawning much seek in this field in untried-made years. It is important firstly, to situateVygotskys work alongside that of Pi ripent, whose theories have underpinned much of educational thinking and practice for m any decades. The impression of the zone of proximal development (ZPD) has loose up many new ideas, not only to the highest degree the nature of claw development itself, but to a fault about how children may be helped to learn more effectually within the classroom context. Researchers have studied work within the ZPD from a variety of perspectives and there be clearly contrasting views, emanating from Vygotskys work, about the nature of childrens t distributivelying and how it world power best be enhanced through the interrelationships amid children and adults and children and their friction matchs.Vygotsky, a Russian psychologist writing in the 1920s and early 1930s, presented a view of child development and development which was radically different from that of his contemporary, Piaget. Piagets work achieved recognition and subsequently became highly influential in the realm of education and precept practice. However, as highlighted by Schaffer (1996) and Faulkner and woodshead (1999), Vygotsky died in 1934 and his ideas became recognised only more recently, having been translated, during the 1960s and 1970s, into English from Russian.Vygotsky criticised Piagets basic smell that the developmental process begins in infancy with the child progressing through a stop consonant of relative egocentricity, eventually reaching a condition in which his or her thinking and behaviour becom e socialised. He suggests that this burn up precludes the notion that schooling may interpret a role in the course of development or maturation of those functions activated in the course of learning (Vygotsky, 1978, p.79). Whilst Piaget, then, essentially sawing machine the child as initially egocentric, only gradually becoming a social being, Vygotsky turned this view completely around, suggesting that even the youngest baby is profoundly social. In contrast to Piaget, Vygotsky believed that development moves from the social to the individual, the child progressively achieving self-aw beness and a capacity for reflection through his or her interaction with other(a)(a)s.Vygotsky, then, argued that interaction with others is critical for the childs achievement of mental maturity and individuality. He suggested further that this achievement depends upon interactions with those people, within the childs surroundings, who are more cap sufficient and advanced than the child. Pro cesses of interaction, through discussion and argument amongst the child and these others, become the basis for processes which take place within the child at an individual level (Faulkner and Woodhead, 1999). These notions form the basis of what Vygotsky has termed the zone of proximal development (ZPD). Vygotsky (1978) points out that it has been commonly unders besidesd that learning, and instruction, should be matched in some way to the childs developmental level. The teaching of reading, writing and arithmetic, for example, has been traditionalisticly initiated at a specific age level.However, match to Vygotsky, we should not limit ourselves except to determining developmental levels if we wish to discover the actual relations of the developmental process to learning capabilities (Faulkner and Woodhead, 1999a, p.11). Instead, he suggests that we mustiness take account of at least two developmental levels.Vygotsky acknowledged the existence of the actual developmental level which is the summation of a childs mental functions, as determined through the childs performance on a battery of tests or tasks at varying degrees of obstruction. He argues, however, that, through testing in this way, we tend to try on the level of the childs mental abilities according to those things that children screw do on their own. If the child is offered leading questions or is helped towards a solution in collaboration with other children, thereby perhaps just missing an independent solution to the problem, this is not regarded as evidence for his or her mental development (Vygotsky,1978). We have failed, then, according to Vygotsky, to recognise that what children fag do with the assistance of others could be even more indicative of their mental development than what they can do on their own.The zone of proximal development, then, constitutes those mental functions which are currently in an embryonic state but in the process of maturation. Vygotsky summarises this ide a thus the actual developmental level characterises mental development retrospectively, magic spell the zone of proximal development characterises mental development prospectively (Faulkner and Woodhead, 1999a, p.12). Vygotsky suggested, then, that if we were to seek to discover the maturing functions of a young child, his or her capabilities as shown in collaboration with others, we will be able to obtain an accurate picture of that childs future actual developmental level. In footing of classroom practice, instruction which aims for a new stage in the developmental process, rather than oriented towards learning which has already been mastered, is seen as ultimately more effective for the learning process. Vygotsky essentially argued that the relationship between learning and development is not straightforward with development following school learning in a linear way. Rather, the two processes tend to interact with each other continually in highly complex and dynamic ways (Vyg otsky, 1978).The Vygotskian concept of the zone of proximal development, along with others, such as scaffolding and guided participation, is central to the socio-cultural approach to development. Guided participation, for example, as outlined by Rogoff (1990), is rooted in the idea that cognitive, linguistic and social competencies are developed through childrens active participation in a variety of adult-guided activities. Meadows (1994) describes how the more expert person, whether adult or peer, provides a context or scaffolding within which the child may act as though he or she were able to solve the problem posed and, ultimately, indeed master the problem. The adult, for example, gradually leaves more for the child to do as he or she becomes more familiar with the task and is able to accomplish the whole task successfully and independently. Once the task, together with its associated cognitive competency, is achieved, the child is then able to develop and pass on these skills t o peers.Commentators such as Faulkner et al (1998) and King and ODonnell(1999) have highlighted that Vygotskys concept of ZPD has been commonly understood to imply that neither the task difficulty nor the guidance given to children should be too utmost in advance of their current level of ability. The research evidence, specially that presented by Tudge et al (1996) and Tharp and Gallimore (1998), for example, seems to be in general supportive of this observation.Schaffer (1996) expands on Vygotskys emphasis on the importance of the knowledgeable other for childrens learning and development. He highlights the distinction between vertical and horizontal (also known as asymmetrical and symmetrical) relationships, and the unique contribution that each kind of relationship makes to childrens development. Vertical relationships are those in which partners have unequal power and knowledge, such as that between adult and child or achild and older sibling. The equal status between peers in horizontalrelationships, as Schaffer points out, allows children the opportunityto acquire skills, such as those involving co-operation andcompetition, turn-taking, sharing and leadership qualities morein effect than might be possible through, say family relationshipswhich are not egalitarian in terms of knowledge and power.Many researchers focus on play as an important medium through whichyounger children develop skills in negotiating shared understandingswith each other. Pretend play, in particular, was seen by Vygotsky asproviding opportunities for children to explore role relationships andacquire social skills, perspectives and cultural roles that are far inadvance of their actual developmental level. Pretend play, thus,constitutes a good example of learning within the ZPD since childrenare constructing for themselves many possibilities for learning. Whenwe consider peer collaboration in general, whether inside or outsidethe classroom, the concept of prolepsis, first articula ted byRommetveit (1979), cited in Goncu (1998), has been identified as animportant mechanism through which children construct and communicateunderstandings with each other. gem (1993), for example, describesprolepsis as a communicative finesse whereby children take for grantedthat their partners share their knowledge and, therefore, will leaveimplicit some of the meaning embedded in that knowledge (cited inFaulkner and Woodhead, 1999). This, in turn, is said to motivatepartners to test out assumptions about each others meanings andunderstandings, creating a climate for intersubjectivity to develop.Schaffer (1996), however, points out that simply providing childrenwith appropriate experiences, whether in play or structured multitude workwithin the classroom, is insufficient for effective new learning totake place. In keeping with the concept of ZPD, Schaffer defineseffective tuition as teaching which elicits from the child performanceat a developmentally advanced level. Like Meado ws (1994) mentionedearlier, Wood (1988) and Schaffer (1996) also argue that effectiveteaching involves the gradual transfer of training of responsibility for masteringthe task in hand from adult to child, as the child is able to masterincreasingly complex aspects of that task. Although these lattertheorists focus upon adult-child tuition, these ideas could applyequally fountainhead to the transfer of skills and knowledge between childrenand their peers (Vygotsky, 1978).Vygotsky saw the ZPD as an essential feature of learning,maintaining that learning awakens a variety of internal developmentalprocesses that are able to operate only when the child is interactingwith people in his environment and in co-operation with his peers(1978, p.90). However, as Faulkner and Woodhead (1999) point out,children do not necessarily acquire communicative and social skillsfrom each other. Neither can it be assumed that effective learning isachieved by the strategies teachers use through discussion. I t seemsclear that, for example, in group situations the social dynamicsdictate that individuals tend to take on different roles. Someindividuals emerge as dominant or natural leaders some take on therole of mediator or critic or perhaps adopt a very passive stance. Itcannot be assumed, therefore, that even the most skilled tutor canensure that group discussion and interaction will create an effectivelearning space for each participant (Faulkner and Woodhead, 1999).Researchers such as Wood (1988) and Mercer (1995) have noted thatformal teaching and learning contexts are contrived encounters in thesense that, in contrast to informal, spontaneous gatherings, peoplehave to acquire specific ways of talking and behaving according toparticular ground rules. Edwards and Mercer (1987) have presented adetailed depth psychology of one common teaching strategy, defined as theinitiation-response-feedback (IRF) mode of exchange. In the IRF mode,the teacher initiates by posing a particular questio n or problemassociated with the topic of the lesson and pupils respond and aregiven feedback in terms of the rightness or wrongness of theiranswers. However, it is argued that this reduces learning into asomewhat sophisticated guessing game which renders children as passiverespondents, merely trying to search for the answers required of them,rather than as active participants, through perhaps posing questions oftheir own, in the learning process (Wood, 1988).Mercer (1995) explores this theme further in his analysis of classroomdiscourse and its role in knowledge creation. He describes how jointunderstandings and shared frames of reference between pupils andteachers are established in effective classroom discourse. The aims ofskilled teachers are seen as firstly, to orient students learningactivities to the formal curriculum, secondly, to co-construct with thestudents a shared understanding of educational knowledge and thirdly,to help students commit their learning to memory (Mercer , 1995). Inhis socio-cultural analysis of the teaching/learning process, Mercerhighlights the many ways in which teachers sustain classroom discourseby confirming, reformulating, repeating, elaborating, rejecting orignoring the contributions learners make to classroom discussions(Faulkner and Woodhead, 1999, p.84). Through his extensive experienceof classroom research across different societies, Mercer concludes thatsuch guidance strategies, although commonly used in schooled societies,are underpinned by certain common-sense assumptions about teachingand learning and may, therefore, be questioned and challenged.Mercer and Fisher (1998) argue that scaffolding, as a concept, isuseful for analysing how teachers may actively organise and supportchildrens learning when they in pairs or small groups. However, theymaintain that a focus upon learning within the ZPD is too narrowlyrestricted to the dyadic interactions between adults and children andis therefore less useful within the classr oom context. They suggestthat in terms of analysing the quality of teaching and learning inclassrooms, the ZPD seems to have limited applicability becausepractical circumstances force most teachers to plan activities on thescale of classes or groups, not individuals. The notion of any groupof learners having a common ZPD seems untenable(Mercer and Fisher,1998, p.127).Other researchers, however, such as gun moll and Whitmore (1998), haveargued that the ZPD concept can be useful in classroom contexts. Theysuggest that traditional conceptions of ZPD based on dyadicinteractions are, indeed, too narrow and do not account for thesocio-cultural dimensions of the classroom as a context for learning. moll and Whitmore (1998) use examples of childrens written work todemonstrate how one particular class teacher provided a series ofauthentic social contexts within which her bilingual students wereable to explore the myriad of oral and written conventions of theirlanguages. Moll and Whitmore (19 98), thus, suggest that it isunnecessary to view ZPD simply in terms of the characteristic of eachindividual child but that classrooms can accommodate collectiveZPDs. They redefine the ZPD as a zone where children can beencouraged to participate in collaborative activity within specificsocial (discourse) environments (Moll and Whitmore, 1998, p. 132).They conclude that classrooms should be viewed as socio-cultural systems where, over time, teachers and students build up a history of shared understandings and pay back new knowledge.The idea of creating shared meanings and joint understandings, whilst central to the socio-cultural approach to teaching and learning, has been queried in other circles. Stone (1998), for example, has been concerned to elaborate more precisely the mechanisms pertain in the process of intersubjectivity. He argues that the quality of the interpersonal relationship between teacher and learner is crucial for the quality of learning that takes place within th e classroom. Stone emphasises the importance of shared understanding between teacher and learner and observes that adults may not always be sensitive enough to the lack of understanding, particularly in younger children, of the pragmatic conventions apparent for effective communication and dialogue. He is particularly concerned to point out that shared understandings and commonly understood frames of reference between teacher and pupils do not occur instantly but take time to develop.The argument for longitudinal studies, such as the research by Moll and Whitmore (1998) mentioned earlier, is therefore a strong one since these provide a richer description over time of teacher/learner relationships than snapshot studies of isolated teaching and learning exchanges which can often produce a skewed and negative view of teachers competence.King and ODonnell (1999) point out that although Vygotsky himself focused more on the benefits of adult-child interactions rather than those of peer co llaborations, his theory has tremendous implications for our understanding of peer collaboration (p.40). Many researchers have explored the ways in which peer interaction impacts upon childrens learning, problem solving and cognitive development. Forman and Cazdan, for example, investigated how the argument strategies of collaborative problem solvers differ from those of solitary problem solvers (1998, p.192). They compared the performance of three pairs of 9 year old children working on a series of scientific reasoning tasks with the performance of three pairs of 9 year old children working alone on identical problems. They found that, when a Vygotskian perspective is adopted, children gained more rich social and linguistic experiences through working collaboratively on the tasks than through working alone on the same tasks.King and ODonnell (1999), along with Light and Littleton (1998),provide evidence that, in some circumstances, peer interaction does not promote individual cog nitive progress. Not all children work well together, and not all tasks are contributive to joint problem solving.King and ODonnell (1999), for example, argue that applying Vygotskys theory to collaborative problem-solving involves more than simply pairing a child with a more competent other and focusing on the interactions between them. They suggest that relying on the ZPD in terms of the interpersonal aspects of interaction is insufficient.What is required instead, according to King and ODonnell, is an interweaving of different aspects of development, involving the individual and the cultural-historical as well as the interpersonal(1999, p.40). They cite evidence which demonstrates that not all social interaction has beneficial effects and, under some conditions, collaboration can, in fact, have detrimental outcomes. Factors such as age, gender and ability level of the child and partner(s) and childrens motivation to collaborate can all affect the quality of learning outcome. The extent to which children are exposed to more sophisticated reasoning by a partner together with willingness to accept and use that reasoning can also play a key role. King and ODonnell, thus, note that individual and contextual factors interact and mutually affect each other (1999, p.46).King and ODonnell (1999) cite other research by Ellis and Rogoff(1982 1986) and Gauvin and Rogoff (1989) which provides support for the idea that a ZPD can be constructed with either an adult or a peer.However, they also point out that this research indicates that pairing with an adult has different consequences (often more beneficial) for childrens learning (King and ODonnell, 1999, p.50). Many researchers have explored the ways in which teachers can guide knowledge construction through promoting effective group work in the classroom. As mentioned earlier, children are apparent to need adult input if they are to work on collaborative tasks productively. Tharp and Gallimore (1998), for example, us e the concept of scaffolding to support their argument that individual self-determined competence in any area may be generated only after successful performance has been achieved by assisted learning in the childs ZPD. They characterise the ZPD not as a distinct, discrete growing point for an individual child but rather as a complex array of growing edges involving all areas of developing competence. They describe in some detail how the adult assistance provided between parent and child is not a linear, step-like procedure but an ongoing process involving a myriad of reciprocal interactions which reflect, monitor and adjust to the childs learning needs at any given time. Tharp and Gallimore argue that attempts by assisting adults to assess a childs readiness for greater responsibility (in the mastery of a task) often are subtle and embedded in the ongoing interaction (1998, p.105).One example of teaching as assisted performance through the ZPD, as delineated by Tharp and Gallimore ( 1998), is the study by Baker-Sennett et al (1998) which explored the relationship between group collaborative processes and the nature of childrens creativity. This study includes a fascinating account of the ways in which the ideas, planning and organisation of a play based on a fairy tale by one group of six girls, aged between seven and nine, changed over a period of one month. The role of the class teacher in structuring the task for her pupils was also discussed. The ways in which this teacher encourages the girls to reflect upon and address the interpersonal dilemmas they encounter are also illuminated in the research report. Baker-Sennett et al (1998) draw out the evidence in the study for the girls movement, collectively, through parallel interpersonal zones as well as literary, fictive zones.Tharp and Gallimore (1998) suggest, however, that the kind of assisted performance commonly evident, and successful, in the interactions of parents and children is rarely found in teac her/student relationships within the classroom. The assistor, if he or she is to work effectively within the ZPD, must remain in close touch with the learners relationship to the task. In short, it seems that commonly in the classroom, there are too many children for each teacher and not enough time available for working closely enough with the ZPD. As Tharp and Gallimore observe, public education is not likely to reorganise into classrooms of seven pupils each (1998, p.107). They do remain optimistic, however, suggesting that small group collaborative working, promoted through innovative instructional practices, together with the increasing use of new materials and technology could create the conditions for assisted performance to flourish in the future.In conclusion, then, Vygotskys work on the zone of proximal development, and its associated concepts of scaffolding and guided participation, has stimulated thinking and research about the nature of child development itself, its rel ationship to childrens learning and the implications for classroom practice. It seems clear that there are contrasting views on the ways in which children relate to the knowledgeable other, the nature and value of peer collaboration, the nature and extent of adult-assisted learning and the implications of all this for the quality of learning achievable. As Tharp and Gallimore (1998), King and ODonnell (1999) and others argue, it seems that working effectively with the ZPD must take account of not only individual factors and immediate interpersonal interactions between children, adults and peers, but also the myriad of cultural-historical influences upon children and adults. This undoubtedly presents a challenge in terms of current constraints on classroom size and organisation in public education. Some research studies, for example the account by Baker-Sennett et al (1998), have shown that through sensitive and creative classroom practice the conditions for optimal learning through working with the ZPD can be created.ReferencesBaker-Sennett, J, Matusov, E, Rogoff, B (1998) Sociocultural processesof creative planning in childrens playcrafting, in Faulkner, D,Littleton, K, Woodhead, M, Learning Relationships in the Classroom,Routledge, London, pp. 237-257Edwards, D, Mercer, N (1987) Common Knowledge the development of understanding in the classroom, Methuen, LondonFaulkner, D, Woodhead, M (1999) Child Development in Families,Schools and Society Study Guide, The Open University, Milton KeynesFaulkner, D, Woodhead, M (1999a) Child Development in Families,Schools and Society Offprints, The Open University Press, MiltonKeynesForman, E, Cazdan, C (1998) Exploring Vygotskian perspectives ineducation the cognitive value of peer interaction, in Faulkner, D,Littleton, K, Woodhead, M, Learning Relationships in the Classroom,Routledge, London, pp. 189-206Goncu, A (1998) Development of intersubjectivity in social pretendplay, in Woodhead, M, Faulkner, D, Littleton, K, Cul tural Worlds ofEarly Childhood, Routledge, London, pp. 117-132King, A, ODonnell, A.M (1999) Cognitive Perspectives on Peer Learning, Lawrence Erlbaum Associates, LondonLight, P, Littleton, K (1998) Cognitive approaches to group work,in Faulkner, D, Littleton, K, Woodhead, M, Learning Relationships inthe Classroom, Routledge, London, pp. 171-188Meadows, S (1994) Cognitive development, in Bryant, P, Coleman, A (Eds) Developmental Psychology, Longman, HarlowMercer, N (1995) The Guided Construction of Knowledge, Multilingual Matters Ltd, ClevedonMercer, N, Fisher, E (1998) How do teachers help children tolearn? An analysis of teachers interventions in computer-basedactivities, in Faulkner, D, Littleton, K, Woodhead, M, LearningRelationships in the Classroom, Routledge, London, pp. 111-130Moll, L.C., Whitmore, K.F (1998) Vygotsky in classroom practicemoving from individual transmission to social transaction, inFaulkner, D, Littleton, K, Woodhead, Learning Relationships in theClassroom, R outledge, London, pp. 131-155Rogoff, B (1990) Apprenticeship in ideateing cognitive development in social context, Oxford University Press, OxfordSchaffer, R (1996) Social Development, Blackwell, OxfordStone, C (1998) What is missing in the metaphor of scaffolding?,in Faulkner, D, Littleton, K, Woodhead, M, Learning Relationships inthe Classroom, Routledge, London, pp.156-167Tharp, R, Gallimore, R (1998) A theory of teaching as assistedperformance, in Faulkner, D, Littleton, K, Woodhead, M, LearningRelationships in the Classroom, Routledge, London, pp. 93-110Tudge, J, Winterhoff, R.A., Hogan, D.M (1996) The cognitiveconsequences of collaboration and feedback, in Child Development, Vol.67, pp. 2892-2909Vygotsky, L.S (1978) Mind in Society the development of higher psychological processes, Harvard University Press, Cambridge, MAWood, D (1988) How Children Think and Learn, Blackwell, Oxford

Criticisms Of Ayers Logical Positivism And Logical Positivism

Criticisms Of Ayers system of logical Positivism And lawful PositivismAyer published Language, Truth Logic in 1936 when he was only 26 years of age. He was a part of the Vienna Circle who were nonoriously known for their philosophy of logical logical positivism. Logical positivism is a philosophical theory that holds meaty only those non-tautological propositions that place be analyzed by the tools of logic into elementary propositions or atomic number 18 through empirical ceremonial occasion verifiable. It and so rejects metaphysics, theology, and sometimes ethics as meaningless1. In Language, Truth Logic, Ayer puts forth his own version of the impediment belief. It is by this principle of verification in which these philosophers, including Ayer, assess whether or not propositions argon meaningful. Further more(prenominal) it is by the principle of verification and the idea of the uninflected-synthetic tuberosity in which the heart Ayers philosophy rests. Analytic prop ositions are propositions that are true or false in virtue of their meaning alone and synthetic propositions are propositions that are true or false in virtue of how the world is. Ayers logical positivist position and principle of verification is faulty and unreliable as shown by many criticisms ranging from self-refuting nature of the principle of verification to the collapse of the analytic-synthetic distinction by Quine.To begin with, Ayers principle of verification goes as followsa sentence is factually signifi guttert to any given person, if, and only if, he knows how to vagabond the proposition which it purports to express that is, if he knows what observations would lead him, under certain conditions, to accept the proposition as be true, or reject it as being false. If, on the other hand, the putative proposition is of such a character that the assumption of its truth, or falsehood, is consistent with any assumption whatsoever concerning the nature of his upcoming experi ence, and whence, as far as he is concerned, it is, if not a redundance, a mere pseudo proposition. The sentence expressing it whitethorn be emotionally significant to him scarcely it is not literally significant.2In other words, a proposition is factually significant if it is a tautology or if it is possible to be empirically observe under conditions that would allow it to be rendered true or false. By wording it this say Ayer allows propositions such as there is oxygen on the planet Uranus to necessitate factual significance because it could be possible under the right conditions to riddle that claim. However a claim such as God is omniscient does not claim any factual significance and is non genius in Ayers view, because it could never be verified due to God being outside of our experience. The same stack goes that of ethics and aesthetics by following Ayers principle of verification. By following this principle, one cannot say that the Mona Lisa is beautiful or that Mur der is wrong because you cannot verify those things empirically. in like manner by assuming the Verification Principle it follows that scientific laws are meaningless statements, and are empty of informational content. The Verification Principle rules out all scientific laws, and therefore the whole of science. However Ayer tries to allow for such things as scientific laws by making a distinction between strong verification and weak verification. tight verification refers to statements which are directly verifiable, that is, a statement can be shown to be correct by flair of empirical observation. Weak verification refers to statements which are not directly verifiable nevertheless instead highly probable by means of empirical observation. However, the phrase highly probable introduces a sense of subjectivity. If one can allow for such things as scientific laws as meaningful due to them being highly probable then one can allow for such things as ethics as meaningful depending on whether you think the evidence at hand is enough to deem it highly probable. An redundant criticism can be made here in regards to what is meant by empirically observable. By observable do we mean with the naked eye? If so, the construct of cells must then fall to weak verification. However even if what was meant by observable allowed for such things as microscopes so that we did actually observe cells then what virtually the things in which we cannot observe at all such as black holes? We all believe there are such things as black holes but we cannot actually observe them but quite we observe the effects of black holes. Therefore, so to must black holes then fall to weak verification. Furthermore it is only by seeing what follows from this principle of verification that one would desire to reject it. The greatest objection to the principle is that it is too much of a double stabbing sword it cuts more good out of the world than it does bad.American philosopher and mathematici an, Hilary Putnam, puts forth the argument that making a strong and weak distinction or an empirical and theoretical distinction is meaningless. Putnam argues that making such a dichotomy is a problem from the start with four objections something is referred to as observational if it is observable directly with our senses. An observation term cannot be applied to something imperceptible. If this is the case, there are no observation terms. So to use the term observational in regard to anything we try to verify indirectly is in itself a mistake. The term is being applied inappropriately and the result is the conclusion of there being no observational terms. Some unobservable terms are not even theoretical and belong to neither observation terms nor theoretical terms. Some theoretical terms refer primarily to observation terms. This is to say that there is no clear distinction always. Reports of observation terms frequently contain theoretical terms. Again he is collapsing the disti nction here. A scientific theory may not contain any theoretical terms.3 In conclusion Putnam states that following the previous objections there cannot be a distinction of observational (strong) and theoretical (weak) verification.A more moderate criticism to be made of Ayers principle of verification specifically comes from Karl Popper in his essay Science as falsification. iodine important fact to know about Popper is that Popper believed that scientific knowledge is provisional. That is to say, it is the best we can do at the moment. While Ayers principle of verification holds that meaningful statements are only those non-tautological propositions that can be analyzed by the tools of logic into elementary propositions or are empirically verifiable Popper argues that such a order of verification is too strong a criterion for science and instead argues that the criterion of the scientific status of a theory is its falsifiability, or refutability, or testability.4 rather of the rule of verification being whether or not a statement is empirically observable, the method instead is whether or not it can be falsified. One should not try to confirm a theory as the logical positivists try to but one should try to falsify it. Instead one should lock away by a method of deductive reasoning. Popper states, Every good scientific theory is a prohibition it forbids certain things to happen. The more a theory forbids, the punter it is.5 Following from Poppers theory of falsifiability, the more predictions a theory makes, the better it is. The strength of Poppers method is solely that it did not use inductive inference as the positivists method of verification did and therefore Poppers method did not accompany the philosophical problems that come with the positivists method and Poppers method, while being riddled with its own problems, did not claim statements to be meaningless but instead unscientific for the time being.Another means of criticism features Ayers princ iple itself is its own demise. When considering the principle of verification a question comes to mind. How is it that the principle of verification is verified? The answer cannot be. The principle cannot verify itself. We could test the principle empirically but to do so we make an independent test for meaningfulness. If we dont have an independent test for meaningfulness then we cant test the verification principle to see if the possibleness fits the data. Therefore, nothing verifies the principle of verification. If the principle itself cannot be verified then it is of no importance. It is nothing less than self-refuting and the whole of logical positivism collapses upon itself. A popular rebuttal to this objection is that the verification principle is more of a meta-theory rather than a theory and does not need to be verified as it is on a different level than that of theories. Any theory could be called a meta-theory just by saying so and then avoid self refuting criticism. B y saying a theory is above other theories and does not need verification does not make it so. This is nothing short of a bias for the principle and not true inquiry. Carrying on from this idea that the verification principle is more of a meta-theory is the rebuttal to be made by the logical positivists that argues logical positivism is a philosophy of science and not an axiomatic system that can prove itself. However while it may not be presented as an axiomatic system that can prove itself, it is still an axiom. It is an assertion of a way to determine meaning that is not able to be proved correct. The principle of verification requires other axioms to establish the criteria of experiential proof as a previous condition, and they cannot be proven experientially or otherwise either without begging the question. Therefore, the principle of verification is meaningless.One of the strongest criticisms to be made, if not the strongest criticism to be made, against Ayers logical positivis m was made by W.V.O. Quine in his essay Two Dogmas of Empiricism. Quines Two Dogmas is often cited as one of the most important works of twenty century philosophy. Quine argued that testing a meaning were holistic and by holistic what is meant that you cannot test ideas alone by themselves. When one tests one idea you test every idea that is committed to that idea also. For example, if one tested a certain hypothesis and the data that returned was not that was to be expected that would not conclude that the hypothesis is false because something may have went wrong in testing the hypothesis. The method by which one is testing may itself be flawed and not the hypothesis. However we assume that the methods by which we are testing by are correct. These assumptions could very well be incorrect and not the hypothesis. One might argue that we can then test these assumed ideas that we have but there is no practical way that we could test all of our assumed ideas that we have while testing a hypothesis without running into an infinite regress. Quine argues that there is no scientific way to make sense of the analytic-synthetic distinction and this is the first of the two dogmas. If Quine is correct in this holism then we also test our analytic belief. However analytic beliefs are supposed to be immune from empirical testing according to Ayer Quine argues that we have a weather vane of beliefs in which all of our beliefs make contact with the world through experience which is to say our analytic beliefs are indeed subject to falsification. For example when testing a hypothesis such as Grass is green, we are not just testing that, we are testing everything that this idea is connected to. If it turns out that grass is not green we might revise one of our other hypotheses such as are our eyes working properly or are we looking at grass. Even analytic beliefs may be revised as such has happened in modern physics with quantum physics and non-Euclidean geometry. It is not i mpossible to revise our analytic beliefs and if we are testing these and they are not true by definition and are by experience then the analytic-synthetic distinction collapses which is fatal for logical positivists such as Ayer.To summarize, as a logical positivist, Ayer held to a principle of verification that stated a proposition is factually significant if and only if it is a tautology or if it is possible to be empirically observed under conditions that would allow it to be rendered true or false. This principle of verification is not only an verbose philosophy to follow due to its renouncement of ethics, aesthetics and science but it is also a self-refuting one due to the principle of verification being unable to be verified and not being a tautology. It is because of these reasons that Ayers principle of verification and logical positivism as a whole be rejected.

Current Air Quality Trend In Malaysia

Current cause feeling Trend In MalaysiaDimitriou and Christidou (2007) mentions business pollution is one of the most pressing global environmental problems that threaten the wellbeing of living organisms, hold ining to a loss of biodiversity or disrupting the function of the environment as a system. Air pollution occurs as a consequence of natural processes as well as man activity (anthropogenic). Examples of natural causes of straining pollution allow vol spateic eruptions, forest fires and windblown dust. anthropogenetic distribute pollution from sources like motor vehicles and industries continues to be a serious harm to human health and welfargon is more likely, namely the more thickly populated urban aras. The health effects of gloriole pollution dumb order been describe in look studies everywhere the past 30 years. These effects include respiratory diseases such as asthma, cardiovascular diseases, changes in lung function, and death.Colls (1997) reported pinp oints in the atmosphere primary or secondary, solid or liquid. They come into the atmosphere, and leave it over again by a wide variety of routes. Particulate enumerate is characterized by its somatogenetic and chemic properties Nader (1975). In addition, jot size and particle composition atomic number 18 characteristic that play a significant role in the assessment of health effect. In response to this information, regulatory agencies with a mandate to protect popular health must now consider how to implement supervise ne twainrks that will allow measuring the particulate matter matter matter concentration.In recent years, a increase of egress of supervise system for particulate matter (PM) atomic number 18 available and ar wide ranging in type, cost, flexibility and accuracy. fit to Kingham et al. (2006), accurate and reliable monitor of PM aerosol in the respirable size fraction (In 2001, Chung et al pointed nearly traditional monitoring networks (Continuous Aero sol Mass Monitor, Integrating Nephelometer, taper element Oscillating Microbalance) for airborne particulate matter. A pocket-size proceeds of past studies eat up evaluated the tapered element oscillating microbalance (TEOM) and a series of manual of arms hydrometric methods (Allen et al., 1997, Ayers, 2004, Cyrys et al., 2001, Hauck et al., 2004, Williams et al., 2000) but fewer still have comp ard other(a) commercial monitors (Baldauf et al., 2001, Chung et al., 2001, Heal et al., 2000, Monn, 2001, Salter and Parsons, 1999).CURRENT AIR QUALITY TREND IN MALAYSIAThere are 52 National Air Quality Monitoring Stations (AQMS) in Malaysia, function to monitor continuously 5 major(ip) pollutants, namely Particulate outcome (PM10), Ozone (O3), Sulphur Dioxide (SO2), Nitrogen Dioxide (NO2) and Carbon Monoxide (CO). For the Yankee region of Malaysia (Perlis, Kedah, Pulau Pinang and Perak), the overall air quality trainwas lies surrounded by tidy to domesticise. However, there are curtain places (Tanjung Malim, Alor Star and Sungai Petani) enter asthmatic level of the day especially in the mid of the day till late afternoon due to high concentration of ground level ozone (O3). In tanjung Malim, one unhealthy day was recorded due to high level of particulate matter (PM10)Air Pollutant Index (API) system were used in reporting the air quality status in Malaysia. The API compute from the monitoring of Ground level Ozone (O3), Carbon Monoxide (CO), Nitrogen Dioxide (NO2), Sulphur Dioxide (SO2) and Particulate Matter of s sluttish than 10 microns in size (PM10). Air quality status can be categorized in five main level (good, moderate, unhealthy, very unhealthy and hazardous as in Table 1.1.Table 1.1 Malaysia Air Pollution Index (API)(Malaysia Environmental Quality Report 2011, vigor)APIAir Quality StatusDoE in Malaysia Environmental Quality Report 2011 highlights the annual average of PM10 was 43m3 , but was slightly increased compared to 2010 (39m3 ). Howev er, for both year (2010 and 2011) value still below the Malayan Ambient Air Quality Guidelines value (50m3 ). The trend of the annual average levels of PM10 concentration in the ambient air between 1999 and 2011 complied with the Malaysian Ambient Air Quality Guidelines as shown in Figure 1.1 and Figure 1.2 shows the trend based on land use categories (Urban, Sub Urban, Background and Rural).MONITORING METHODS AND INSTRUMENTSThe underway monitoring of airborne particulate matter in the ambient atmosphere is mainly for determination of the mass of the particle. The methods used for monitoring of concentration of PM can take issue and are very dependent upon the aim of monitoring, sites, monitoring problem and resource that available during monitoring period. Usually, monitoring is to determine the concentration of total hang up particulate (TSP) and suspended particulate matter (SPM) have become outdated with the awareness that PM effects varies depending on sizes of the particle. QUARG (1996) pointed that the latest method of monitoring (gravimetric and direct interpret method) are designed to determine the concentration of particle in the different sizes (PM10 and PM2.5). Table 1.2 displays the examples of the instrument for PM10 monitoring and the detection methods.Table 1.2 Examples of instruments used in PM monitoringInstrumentPrinciple of detection important Attenuation Monitor (BAM)The beta ray sources used in BAM are 14C. Directly measured the particle based on relationship between beta ray attenuation to particle mass.Depends on the near exponential decrease in the total make sense of beta particle transmitted through a thin sample as the density increase (William et al., 1993)The gravimetric method that only the mass of particle can be take up the detector not by the size of distribution, physical size, shape or either by chemical composition (Chow et al., 1996)Tapered Element Oscillating Microbalance (TEOM)Tapered hollowed channel will act as a gateway where the particles are collected on a filter.For minimum caloric expansion that occurred at the tapered channel, the sample area is maintained at 50C. Thermal expansion may affect the oscillation frequency and cleverness be reduce the total amount of particle bound water.DustTrak 8520Hands carry instrument and highly portable direct reading monitor. Using light scattering laser to detect the particles.Particles scattered the light which is from laser diode drawn through a constant stream. Liu et al., (2002) mentions the amount of light scatter go back out the particles mass concentration.PROBLEM STATEMENTIn Malaysia, PM10 monitoring was conducted by Alam Sekitar Malaysia Sdn. Bhd. (ASMA). Md Yusof et al (2010) lists two instruments used for monitoring are high hatful sampler (HVS) and beta attenuation monitor (BAM). BAM is the standard instrument used by Department of Environment (DoE) to measure particulate matter in 51 monitoring station in Malaysia.Air quality of th ese pertly areas cannot be monitored and observed due to the lack of monitoring stations of air quality. To develop these hot monitoring stations, definitely it will be costly and need good maintenances. Additionally, air quality at the rural areas overly cannot be monitored. Therefore, a new alternative instrument such as Direct Reading Monitors (DRM) will enable air pollutants to be monitored more comprehensively. Even though DoE has move(p) up their monitoring station, the number of monitoring stations is limited. With the use of simple instruments and cost effective, the air quality in areas without monitoring stations can be monitored and assessed.For this study, direct reading monitor (DRM) was used to monitor PM10 concentration at selected stations. However, PM10 concentration recorded using DRM and BAM was different. This is due to different detection method between both instruments (DRM used laser and BAM used beta ray) and response time for DRM was set to one minutes, while BAM records hourly PM10. In addition, the mobile factor that is own by DRM is also affecting the reading. Therefore, an appropriate coefficient needed to make sure the reading obtained from the DRM is the same as the reading derived from the BAM.OBJECTIVESThe objective of this project is-To estimate coefficient that relates DRM and BAM by using regression techniques.To investigate the best coefficient based on procedure indicator.To determine the influence of meteorology on PM10 concentration.SCOPE OF STUDYIn Malaysia, Beta Attenuation Monitor (BAM) is the standard instrument used by DoE to measure particulate matter in 52 monitoring stations. This instrument mechanically measures and records hourly particulate mass concentration in ambient air. It uses beta ray attenuation to calculate collected particle mass concentration units of g/m. For this study, Direct Reading Monitor (DRM) was used to monitor PM10 concentration at Air Quality Monitoring Station (AQMS) conducted by A lam Sekitar Malaysia (ASMA). The station selected for this research is Prai and Seberang Jaya. Both stations are situated in the north part of Peninsular Malaysia.They are many researches comparing the mass concentration results of the BAM and gravimetric methods. Salminen and Karlsson (2003) reported the agreement between PM10 concentration measured by BAM and gravimetric method. PM10 concentration recorded by the DRM was compared with data monitored using BAM provided by DoE.Three method of analog regression was used to investigate the relationship between the DRM and BAM monitoring record which is method of ratio, method of quartile and method of quantile. Performance indicators were used to evaluate the goodness of fit for the ratio,quartile and quantile method to determine which method is the best.THESIS OUTLINEThis thesis has a five important parts and brief outlines of this thesis follows. Chapter one gives an introduction about air quality monitoring in Malaysia, sources of air pollution in Malaysia. This thesis also stated the problem statement, objectives, scope of study and concludes with thesis outline.Chapter 2 discussed about the literature review of the research area (particulate matter 10, criterion for PM10), and also review that determines to what extent the issues or research part has been investigated. From this chapter, a good view and knowledge about research area can be undertaken.Chapter 3 describes the methodologies that have been used in this research. The area of study, setting and sitting of instrument, monitoring of PM10 using DRM and BAM, and method to analyzing the monitoring records also discussed in this chapter.Chapter 4 presents the result from data analysis in the form of graphical techniques and table, for all three methods, performance indicator and meteorological effect with the discussion.Chapter 5 gives a general discussion of this research. The comparison of three methods was discussed and to determine which method i s the best using performance indicator. This chapter also discussed the best conclusions of this research and listed of recommendations for future research.CHAPTER 2LITERATURE REVIEW2.1 INTRODUCTIONSherman (2003) defined air pollution as the presence of undesirable levels of physical or chemical impurities. Many organization such as the World Health Organization (WHO, 1999) recognized particulate matter (PM), degree Celsius monoxide (CO), nitrogen dioxide (NO2), ozone(O3), lead (Pb) and south dioxide (SO2), as classical pollutants presenting a hazard to sensitive populations. Air pollution now becomes an increasing source of environmental degradation in the developing nations of eastbound Asia (Alles, 2009).The air pollution in Malaysia has not reached a critical level as in other metropolitan areas in Asia, like Jakarta or Manila. (Malaysian German Technical Cooperation, 2000). However even outside extreme haze periods, pollution levels increased despite tight regulations and th is is added by the increase in the number of vehicle, distance travelled and growth in industrial production.Air quality in Malaysia is a major concern as the nation forged forrard to become an industrialized nation by the year 2020. The Malaysian Air Pollution Index (API) is obtained from the measurement of PM10 and several toxic gases such as SO2, CO, NO2, and O3. The air quality status in Malaysia is determined accordingly to API which indicates the level of pollution in the atmosphere. The API system of Malaysia closely follows the Pollutant Standard Index (PSI) system of the United States of America.According to Department of Environment, based on the Air Pollutant Index (API), the overall air quality for Malaysia in 2010 was between good to moderate levels most of the time. The overall number of good air quality days increased in 2010 (63 percent of the time) compared to that in 2009 (56 percent of the time) while remaining 36 percent at moderate level and one percent at unhe althy level. However, peatland fires resulting in transboundary air pollution that occurred in the Southern Asean region in the month of October resulted in a short spell of haze episode in the southern part of Peninsular Malaysia (DoE, 2009 DoE, 2010)DoE also reported that the overall air quality of the northern region of the West Coast of Peninsular Malaysia (Perlis, Kedah, Pulau Pinang and Perak), was between good to moderate most of the time. However, Tanjung Malim and Tasek recorded four unhealthy days and one unhealthy day, respectively. The pollutants of bear on were ground level Ozone (O3) and PM10.2.2 AIR QUALITY MONITORING IN MALAYSIAIn order to ascertain the quality of the environment in Malaysia, the Department of Environment (DoE) on a regular basis monitor the air quality. The air quality monitoring, which necessitates measurements of total suspended particulates, atmospheric lead and dust fallout, are conducted at 52 monitoring stations (Figure 2.1 and 2.2) categor ized as industrial, urban and sub urban areas (DoE, 2010). In addition to the 52 stations in the National Continuous Air Quality Monitoring Network, manual air quality monitoring stations using High Volume Samplers were also established at 14 different sites for measuring total suspended particulates, particulate matter (PM10) and heavy metals such as lead.A continuous automatic monitor which gives instantaneous measurements of gaseous pollutants such as CO, SO2, oxides of nitrogen and ozone, as well as suspended particulate matter and total hydrocarbon used as the monitoring equipments by the DoE to assess air quality (Abdullah, 1995).The air quality status is reported in terms of Air Pollutant Index (API). The air pollutants used in computing the API are ground level ozone (O3), carbon monoxide (CO), nitrogen dioxide (NO2), sulphur dioxide (SO2) and particulate matter of less than 10 microns in size (PM10). The API is categorized as good, moderate, unhealthy, very unhealthy and ha zardous.2.3 SOURCERS OF PM10The US EPA defines particulate matter (PM) as a mixture of solid particles and liquid droplets found in the air. PM can be in sizes or colors large or dark enough to be observed or it can be so small that an electron microscope is required to distinguish it. According to Fierro (2000), coarse particles (PM10) have an aerodynamic diam between 2.5m and 10m. They are organise by mechanical disruption (e.g. crushing, grinding, abrasion of surfaces), evaporation of sprays, and suspension of dust. PM10 particles are small enough to be inhaled and accumulate in the respiratory system (Colls, 1997).Particulate matter can come from many sources. Generally, any activity which involves burning of materials or any dust generating activities are sources of PM. whatever sources are natural, such as volcanoes and water mist (Bates, 1995). PM is introduced to the air through both natural and human causes (Harrisonu Yin, 2000). PM from specific sources typically follo w short term and long term (seasonal) trends (Yatin et al. 2000). For example, space heating generates more combustion related PM emissions during the nippy seasons while, at the same time, snow cover can inhibit PM emissions from the soil.Quality of Urban Air Review Group (1996), published the report in which they describe that primary particles are those right away emitted to the atmosphere from sources such as road affair, coal burning, industry, windblown soil and dust and sea spray. On the other hand, secondary particles are particles formed within the atmosphere by chemical reaction or condensation of gases, and the major contributors are sulphate and nitrate salts formed from the oxidation of sulphur dioxide and nitrogen oxides respectively.The primary sources of PM in Malaysia, are motor vehicles diesel trucks, industrial emissions, agricultural, slash and yard waste burning, and even expel from lawn mowers and boats (Department of Environment, Malaysia, 2010). PM concen trations tend to be especially high in area with greater population density, nearby industries or agriculture, or where local topography or stomach conditions contribute to air stagnation.2.3.1 TrafficVehicular particle emissions are the result of a great many processes, an example combustion products from fuel and oil, wear products from brake linings, tyres, bearings, car body and road material, and the resuspension of road and soil dust (Laschober et al. 2004). Traffic is an effective source of both fine and coarse mode primary particles, condensable thoroughgoing gases, and a major source of nitrogen oxides that then form secondary nitrate aerosols. Particles of condensed carbonaceous material are emitted mainly by diesel vehicles and ailing maintained petrol vehicles (Vardoulakis et al. 2003). Diesel assoil particles have been shown to display a multimodal size distribution (Kerminen et al. 1997) and are mainly carbonaceous agglomerates below 100 nm in diameter, whereas pa rticles emitted by gasoline vehicles are also mainly carbonaceous agglomerates but considerably smaller, ranging from 10 to 80 nm (Morawska and Zhang 2002). Particulate matter originating from traffic can be present at elevated concentrations especially during high traffic density and poor dispersion conditions, e.g. in street canyons, which can lead to high human exposures to traffic-related pollutants (Vardoulakis et al. 2003). Identification of traffic related particulate matter in source apportionment studies has become difficult due to phasing out of Pb as an additive to gasoline. Elements that have often been associated with vehicular emissions include Cu, Zn, Pb, Br, Fe, Ca and Ba (Huang et al. 1994, Cadle et al. 1997, Kemp 2002, Morawska and Zhang 2002, Sternbeck et al., 2002). Emissions of many metallic elements from vehicular sources are mainly due to non exhaust emissions, examples from the wearing of tyres, brakes and other parts of vehicles (Sternbeck et al. 2002, Adach i and Tainosho 2004, Laschober et al. 2004, Lough et al. 2005). In addition to road traffic, emissions from the main and auxiliary engines of ships can be a significant source of particulate matter and associated elements such as V and Ni (Lyyrnen et al. 1999) at certain locations (Ohlstrm et al. 2000, Colvile et al. 2001, Isakson et al. 2001).2.3.2 Stationary sourcesThe most significant stationary combustion sources include energy production facilities such as municipal provide plants, waste incineration, and residential combustion. Several industrial processes, such as iron and steel production, also involve combustion of fossil fuels or biomass for generating power and heat needed for the process. Most of these sources are considered point sources, although smaller and more widespread sources such as residential combustion could also be considered as an area source. Physical and chemical characteristics of the particles emitted from these source categories depends on the combus tion process itself, and the type of fuel burnt (solid, liquid, or gas). Combustion processes and properties of particulate matter emitted from these sources have been comprehensively reviewed by Morawska and Zhang (2002). The major industrial processes include factories processing metals and chemicals, materials handling, construction and mining. Particulate matter from these sources are partially released as fugitive emissions, which are not collected and released in a controlled manner, but emitted from a variety of points and areas connected to a process (Seinfeld and Pandis 1998). Chemical and physical properties of fugitive emissions depend on the processes by which they are emitted. Since the loudness of most take after metals are nowadays emitted from industrial processes, their concentrations are spatially heterogeneous and subsequently, their measurement is quite sensitive in terms of location however, the reported concentrations of trace metals in major cities demonstra te rather similar levels of trace metals (Harrison and Yin 2000).PM10 CHARACTERISTIC.PM is characterized by its physical, chemical and optical properties. The quality of air that we breathe in every second determine by the amount of particulate matter in it. These particulate matters measure by their particles size. Those with the particles size less than 10 micron (PM10) is used to monitor the air quality which in turn is related to the health problems of the workers or public at large (Alias et al., 2007). The most important characteristic of particulate matter (PM) is the particle size. This property has the greatest impact on the behavior of particulate matter in control equipment, the atmosphere, and the respiratory tract. Particles of importance in air pollution control span a broad size range from extremely small (0.01 micrometer) to more than 1,000 micrometers (US EPA, 2010). As a frame of reference, a human hair has a diameter of approximately 50 micrometers.The suspended particles vary in size, composition and origin. It is convenient to classify particles by their aerodynamic properties because, (a) these properties govern the transport and removal of particles from the air, (b) they also govern their deposition within the respiratory system and (c) they are associated with the chemical composition and sources of particles (WHO, 2003).2.4.1 Physical CharacteristicThe physical attributes of airborne particulates include mass concentration and size distribution. the size is from a few nanometers (nm) to ten of micrometers (m) in diameter. Size is the single most important determinant of the properties of particles and it has implications on formation, physical and chemical properties, transformation, transport, and removal of particles from the atmosphere. Ambient levels of mass concentration are measured in micrograms per cubic meter (g/m3), size attributes are usually measured in aerodynamic diameter. Particulate matter (PM) exceeding 2.5 microns ( m) in aerodynamic diameter is slackly defined as coarse particles, while particles smaller than 2.5 microns (PM2.5) are called fine particles (World Bank Group, 1998). Particles of any substances that are less than 10 or 2.5 micrometres diameter. Particles in this size range make up a large proportion of dust that can be drawn deep into the lungs. Larger particles tend to be trapped in the nose, mouth or throat. The concentration and other characteristics of suspended particulate matter are determined by the presence and activity of sources. formerly formed, particles change their size and composition by condensation or evaporation, by coagulating with other particles or by chemical reactions (Seinfeld and Pandis 1998). Pohjola et al., (2000), found that meteorological factors such as wind speed and direction, temperature, amount of precipitation, and the height of the atmospheric boundary layer, are most important in governing the concentration variations of particulate matter. T he highest PM concentrations are often reported during stable meteorological conditions such as inversion with low wind speeds (Pohjola et al. 2004). Also the physical and chemical processes affecting the particles are set to a great extent by meteorological factors.2.4.2 Chemical CharacteristicThe chemical composition of the particulate matter is also important. The chemical composition of PM is highly variable due to pollution sources, chemical reactions in the atmosphere, long-range transport effects and meteorological conditions. Absorption and heterogeneous nucleation of vapor phase pollutants onto real particles can create toxic particulate matter (US EPA, 2010). The chemical properties vary depending on sources of particles. It is important to note that particulates are not one particular chemical substance but a classification of particles by size rather then chemical properties.The acid component of particulate matter, and most of its mutagenic activity, are generally con tained in fine particles, although some coarse acid droplets are also present in fog. Particles interact with various substances in the air to form organic or inorganic chemical compounds. The most common combinations of fine particles are those with sulphates (World Bank Group, 1998). The relative abundance of the major chemical components, termed as bulk chemical composition and also about trace element and strong acid contents was reviewed in the studies of Harrison and Jones (1995) and Harrison and Yin (2000). In addition to the bulk composition, Harrison and Yin (2000) also discussed trace element and strong acid contents. In the United States, sulphate ions account for about 40% of fine particulates and may also be present in concentrations exceeding 10 g/m3 (US EPA, 1982).2.5 PARTICULATE MATTER HEALTH EFFECTThere are a very limited number of studies that relate air pollution to its health impact in Malaysia. The lack of data gathering for environmental epidemiological analysi s makes it difficult to estimate the health impact of air pollution (Afroz et al., 2003). Whilst epidemiological studies have consistently demonstrated adverse effects of particulate matter exposure on human health, the mechanism of effect is soon unclear (Harrisonu Yin, 2000).The US Environmental Protection Agencys 1996 Air Quality Criteria for Particulate Matter reviewed the physiologic, toxicology, and epidemiologic studies related to the inhalation, deposition and health effects of PM exposures (US EPA, 1997). Some research has identified several plausible biological mechanisms for both the initial pulmonary injury and the consequent systemic effects (Neas, 1999). The respiratory system is the major route of entry for airborne particulates. The deposition of particulates in different parts of the human respiratory system depends on particle size, shape, density, and individual breathing patterns (mouth or nose breathing) (World Bank Group, 1998).In adults, PM exposure was asso ciated with increased incidence of respiratory symptoms, transient decrements in pulmonary function levels, and the onset of chronic pulmonary disease in adults (Neas, 1999). Seaton (1995), has identified several plausible biological mechanisms for both the initial pulmonary injury and the consequent systemic effects following PM exposure and the initial pulmonary injury may be related to one or more properties of PM and its constituents including physical, chemical and biological characteristics. Several hypotheses have been proposed to explain the path physiology of PM induced health effects. The most obvious mechanism involves the reduction in pulmonary function in response to the pulmonary inflammation. In the hypoxia hypothesis, the susceptible population consists of individuals with severe respiratory disease whose pulmonary reserve aptitude is already near the minimum compatible with life. Exposure to PM further lowers their pulmonary function levels and results in emergency hospitalization and death (Neas, 1999)Children are especially susceptible to particulate matter pollution for several reasons, their respiratory systems are still developing, they breathe more air (and air pollution) per pound of body weight than adults and theyre more likely to be active outdoors. Older adults are also more likely to be affected by particulate matter pollution, possibly because they are more likely to have chronic core or lung diseases than younger people. In addition, people who have heart or lung disease, such as congestive heart failure, angina, chronic obstructive pulmonary disease, emphysema or asthma, are likely to experience health effects earlier and at lower particulate matter pollution levels than healthy people (American Lung Association, 1996).The capacity of particulate matter to produce adverse health effects in humans depends on its deposition in the respiratory tract. Particle size, shape, and density affect deposition rates. The most important c haracteristics influencing the deposition of particles in the respiratory system are size and aerodynamic properties. In Malaysian Ambient Air Quality Guidelines (MAAQG), the level of PM10 concentrations are, 150 micrograms per cubic meter (g/m3) for 24 hour and 50 micrograms per cubic meter (g/m3) for the annual (Department of Environment, Malaysia, 2010).Some tiny pieces of particulate matter, PM10, are small enough to pass from our lungs to our bloodstream. PM can alter the bodys defense systems against foreign materials, damage lung tissues, aggravate existing respiratory and cardiovascular disease, and can lead to cancer. In some cases, PM exposure can even lead to premature death. Adverse health effects have been associated with exposures to PM over both short periods (such as a day) and longer periods (a year or more). The people who are most at risk are people with asthma, influenza, lung, heart, or cardiovascular disease, the elderly, and children. The human immune system h ighly-developed in a time and environment where dust was made of large particles. Humans have developed a means of protecting themselves against these large particles. Particles larger than 10 microns generally get caught in the nose and throat, never making it as far as the lungs. Unfortunately, more recent human activity has created many particles that are much smaller, which can make it past our natural defenses, and can enter our systems (Fierro, 2000).The size of particles is directly linked to their potential for causing health problems. Most concerned about particles that are 10 micrometers in diameter or smaller because those are the particles that generally pass through the throat and nose and enter the lungs. Once inhaled, these particles can affect the heart and lungs and cause serious health effects. EPA groups particle pollution into two categoriesInhalable coarse particles, such as those found near roadways and dusty industries, are larger than 2.5 micrometers and smal ler than 10 micrometers in diameter.Fine particles, such as those found in smoke and haze, are 2.5 micrometers in diameter and smaller. These particles can be directly emitted from sources such as forest fires, or they can form when gases emitted from power plants, industries and automobiles react in the air. (U.S Environmental Protection Agency).2.6 MEASUREMENT FOR PARTICULATE MATTER (PM10)2.6.1 Reference MethodThe US Environmental Protection Agency (EPA) has designated a smattering of instruments as Federal Reference o

Intel The Corporation :: essays papers

Intel The CorporationA partnership is a business that, although owned by one or much investors, legally has the rights and duties of an individual. Corporations have the right to buy, sell, and own property. Corporations may make legal contracts, hire and fire workers, set prices, and be sued, fined, and taxed. A business must drive a charter of internalization from a state legislature or Congress to be legally recognized as a corporation.(Watson, p211) While corporations didnt equal until the mid to late 1800s, the idea of the corporation had existed since the early 1600s. It all started with English merchants who started trading companies to help fund the early colonies. If the colonies thrived, the stockholders reaped in the profit. (Watson, p211)A corporation is started when a sole proprietorship, a one-owner business, that is the most common form of business institution in the US, or a partnership, an association of two or more deal in order to run a business, nail dow ns that they dont want to be personally responsible for any loss the company might have. (Watson, p211) Or they might decide that they want the company to live on after they die, that is for the business to have unlimited life. Since neither of these goals can be reached with a sole proprietorship, or a partnership, the owner (or owners, as the case may be) decide that he (they) want to convert their business to a corporation. The owner(s) file a charter of incorporation from the government to be legally recognized as a corporation. (Boyd, March, 99) The owner(s) then sell shares of stock, documents representing ownership in the corporation, to investors. These investors buy and sell the stock to small investors, or stockholders. Since there is no limit to the number of shareholders to a company, the investors vote (for every share you own you get one vote) on a age of directors. The board of directors are in charge of hiring the people responsible for the every-day running of the corporation. These positions include, but are not limited to the president, vice president, and other chief administrators. (Watson, p211-212)If a corporation reaps a profit, investors may receive a dividend, or a share of the monetary gain made by the company. The elected board of directors choose whether the currency will go towards profit, expansion of the company, modernization of the company, or research and development.

ip addressing :: essays research papers

Repeater operates at physical layers of osi model. Digital signals or analog signals that carry digital data can only be transmitted over a limited distance. After a certain distance attenuation or noise endangers the integrity of that data. Repeaters reproduce and transmit the authoritative digital data. This new signal is the exact duplicate of the original signals. Repeaters offer simple means to extend a lucre, increased traffic on the lootwork is introduced. This increased interlock congestion may not be acceptable in some situations.Switch Communication networks may be categorized by the architecture and techniques they use to transfer data. The following types of networks are in common.Broadcast communication networks. Local area networks.Packet radio networks.Satellite networks.In institutionalize communication networks, there are no intermediate switching nodes. Each node in the network is attached to share communication medium. Ethernet and Arc net are examples of bro adcast communication networks.Switched communication networksCircuit switched networksMessage switched networks.Packet switched networks.In switched communication network networks there may be multiple paths linking transmitter and receiver. Data is transmitted from source to destination by being routed through the networks nodes. This is called switching.Bridges are limited to extend the network distance up to the network limitations. Bridges are useful to extend the network when dealing with one network. Also bridges limit entire company to use one network. At last when using bridges a failure in the network affects the entire network and thus the entire company.Routers can extend the network beyond the limitations of a network by connecting two or more networks. Routers allow extending the network by dealing with many networks. Routers also allow you to use a backbone network for faster transfer of information across the different networks.