Commanding Heights Essay

†¢ Episode 1: The Battle of Ideas begs a comparison between socialism and capitalism. †¢ It traces the world’s economic history from the early 1900’s to the events following 9/11. †¢ Asks the question which is a better and more foolproof economic system government control or free markets? †¢ It delves into how the First World War impacted two brilliant economists, Keynes and Hayek. And then follows both Keynes and Hayek through their respective career paths (Keynes role as an advisor to the British Government on wartime economy and Hayek as an Austrian soldier). †¢ Keynes predicted that the result of the treaty of Versailles and demanding reparations from an already bankrupt Germany and Austria would cause another war, The Second World War. †¢ Meanwhile Hayek and his disciple Zlabinger fought against hyper inflation and encouraged free markets. †¢ Simultaneously the American Economy was booming, till October 24th, 1930 when the great depression hit and unemployment soared and industry stopped and half of the US banks were closed down. †¢ During this time Keynes’s theory of government intervention helped lead the way out of the problem (Keynes wrote about Macroeconomics). †¢ Meanwhile Lenin had introduced the New Economic Policy which consisted of grass root level capitalism but the commanding heights would still be under the government. The reform was met with scrutiny from the left, soon after Stalin took power and employed centralised planning of every economic aspect. †¢ Owing to the recovery from the Great Depression and Keynes’ key role in the Breton Woods Conference, in America Keynesianism took control and Hayek faded into the background. †¢ In Britain a welfare state and socialism built the country back from the bottom up. †¢ Newly independent countries like India also employed Keynesian methods, allowing for State led industry. †¢ One third of the world followed aspects of socialism until Churchill and Margaret Thatcher and Keith Joseph were influenced by Hayek’s book, ‘Road to Serfdom.’ †¢ In Germany, Ludwig Erhard stopped price control and re-started the free market economy to combat hyperinflation. The success of his risky decision led to the German Economic Miracle. †¢ While Keynes’ still had a strong hold over Washington, a Chicago School of Economics was created and it emphasised Hayek’s theory as a measure to battle stagflation. †¢ Finally Thatcher’s election and confidence in Hayek’s theory allowed for free markets to be established again. Thus, after a period of a century came back to where it was at the beginning of the century, back to free markets.

Issues Affecting Communication in the Workplace

This essay will focus primarily on three main issues that can undermine effective communication namely cultural diversity, emotions and language (Robbins et al. 2011 p. 331). The importance of feedback in an organisation to improve communication would also be reviewed (Iyer & Israel 2012 p. 55). Through feedback received, communication unveils opportunities to improve the individual and general performances of the organisation (Daneci-Patrau 2011 p. 496).Communication in an organisation comprises of many dimensions spanning formal and informal means of internal communication and external communications (Iyer & Israel 2012 p. 52). Communication is an ongoing process in which feelings, ideas, values and perceptions are transferred from one person to another through symbols which can be in the form of nonverbal, verbal and graphic communication (Dwyer 2009). Organisational communication refers to the transferring of information among members of an organisation, as well as in correctly u nderstanding the message contained in the information (Daneci-Patrau 2011p. 88). In order for an organisation to function effectively coordination of all aspects of the organisation must be achieved and this can only be done through effective communication which enables the organisation to meet its goals and objectives (Daneci-Patrau 2011). Effective communication is necessary in understanding management behaviour, reducing misunderstanding and building trust in and amongst members of an organisation (Daneci-Patrau 2011).Managers play an important role in ensuring the flow of communication through the organisation by using an effective system whereby feedback is received and acted upon (Daneci-Patrau 2011 496). Dwyer (2009 p. 9) states that leaders and managers with effective communication skills are able to work directly with people thereby minimising direct controls and encouraging more understanding, commitment, motivation and productivity within the organisation.The occurrence o f misunderstanding and inefficiency in an organisation can be attributed to lack of communication (Iyer & Israel 2012). Means of communication has grown significantly with the advancement in technology. Managers now have access to various communication channels such as emails, teleconferencing, computers, mobile phones and fax which speeds up the business of communicating (Alger, Delahunty & Diamantopoulos 1997).Communication channels must be established through appropriate methods and on all levels in an organisation both on an individual and group level between various people in the workplace ranging from clients, who are either internal or external to the organisation, staff members from within and outside it, those in managerial positions and line personnel (Klenk & Hickey 2010). The role of an organisation and management is to facilitate and coordinate communication within the organisation.Klenk & Hickey (2010) states that organisational communication relates to the transaction al and symbolic process that facilitates the coordination of activities through mutual adjustments of behaviour of individual parts to achieve a common goal. Communication in an organisation is not just the mere exchange of information, it is more comprehensive than that and includes constructive meanings between members of the organisation who influence each other in the context of asymmetrical power relationships during which they compete for power, resources and legitimacy (Klenk and Hickey 2010).Managers within organisations are in positions of power and personal influence in their relationships with employees and should be proactive in communicating with staff (White, Vanc & Stafford 2010). A number of studies have linked internal communication and the degree to which employees are given feedback to their job satisfaction and performance (White, Vanc & Stafford 2010).Vos (2009) measures performance in the communication area based on the following criteria: the management must s upport the holistic assessment of the organisation, the assessment must be an integral part of the communication function, the assessment process must be a team activity and those responsible for implementing these changes must be part of the team, the assessment must be well-prepared and well-organised and before commencement, those concerned should be well-informed of the organisation’s communication activities. Communication breakdown occurs when the message is not fully understood by the receiver.Breakdowns occur in situations when messages are distorted or blocked in some ways (Alger, Delahunty & Diamantopoulos 1997). These breakdowns are of major concern to the organisation as it may cost them both time and money (Alger, Delahunty & Diamantopoulos 1997). The first undermining factor we will be looking at is culture. Cultural diversity in the workplace is increasingly growing as most organisations today are multicultural in nature (Robbins et al. 2011). Culture is dynami c and a constantly changing in nature over time (Dwyer 2009).Communication barriers can also arise from different languages spoken, values and customs of individuals from various ethnic backgrounds. (Robbins, DeCenzo, Coulter &Woods 2011, p. 331). Culture refers to the norms, beliefs, customs, ethics, codes, mores, values, sentiments, behaviour and attitudes of individuals in a society (Kumar & Chakravarthi 2009). The more common the culture between two people, the greater the likelihood of achieving mutual understanding and effective communication(Alger, Delahunty & Diamantopoulos 1997).Culture can form barriers in communication when individuals are not aware of each other’s differences in values or customs (Kumar & Chakravarthi 2009). Managers today work with people from different nationalities and it is therefore important for them to be culturally competent through gaining knowledge of the cultural aspects of individual and countries they interact with to ensure effective and efficient communication (Todarita & Ranf 2009). Another issue that can undermine effective communication is one’s emotion.Emotions refer to the physiological and psychological state at the immediate time of communication (Smeltzer & Waltman 1984). Robbins et al. (2011) also defines emotions in regards to communication, as how a receiver feels when the message is received and how he or she interprets it. There are two types of emotional abilities namely managing emotions and the use of emotions to facilitate thinking and communication associated with job performance in an organisation (Lindebaum 2009).Emotional Intelligence (EI) is a term that is used to substantiate personal skills and characteristics that are responsible for the ways in which individuals behave, feel and relate to others in a job context (Dwyer 2009). Emotionally intelligent leaders are able to have the social skills and awareness to associate effectively in different settings (Dwyer 2009). In personal, social and business relationships, managers are able to build satisfying relationships nd make effective decisions based on their EI (Dwyer 2009). When emotions are running high, individuals often disregard rational and objective thinking process and substitute it with emotional judgements (Robbins et al. 2011, p. 331). ‘Learning to recognise emotions and empathise with others, developing high self-esteem, managing emotional upsets and anger are all emotional skills that managers and staff should learn’ (Dwyer 2009). In addition, use of language can affect communication adversely.To communicate effectively managers must learn to be clear and concise and tailor their language at an appropriate level so that their audience understands the meaning (Alger, Delahunty & Diamantopoulos 1997 p. 256). Due to the diverse backgrounds of employees in an organisation, different patterns of speech are formed easily in a specialized environment and this developed technical language i s known as jargon (Robbins et al. 2011).Although jargon may greatly help communication within specialized groups, it can impede communication among individuals who are not conversant with the language (Understanding and Managing Organisational Behaviour 2006). Age, education and cultural backgrounds are variables that influence the language a person uses and the definitions the individual applies to it (Robbins et al. 2011). An example of incorporating a language for better communication can be seen in Denmark where predominantly speaking Danish organisations are obliged to adopt English into their organisation (Tange & Lauring 2009). Language management and social interaction within the multilingual workplace national and corporate languages serve different needs and purposes, which is particularly evident  in  a country such as Denmark, where corporate language planning involves the imposition of an English  lingua franca  on  organisations  that are traditionally Dani sh-speaking’ (Tange & Lauring 2009). Tange & Lauring (2009) provides that language usage within multinational companies has suggested that multilingualism creates a complex managerial situation with great implications for cross-cultural communication. When communicating across cultures, awareness of the meaning of the words and idiomatic expressions in the language of another culture can prevent communication barriers and their consequences’ (Dwyer 2009 p. 41). Furthermore, feedback system is an example of a system that managers can use to improve communication in their respective organisation. Kaymaz (2011) defines feedback as the most important stage in the communication process. Communication is a two way process, and managers must be prepared to give feedback to employees and in return encourage feedback from employees (Hitt, Black, Porter & Hanson 2007).Receiving feedback is important as it indicates to the sender that their message has been received and correctly understood and interpreted (Robbins et al. 2011). Once received, feedback can trigger another idea from the sender, initiating yet another cycle of communication which triggers yet another round of feedback, thereby continuing the cyclical nature of the communication process (Understanding and Managing Organisational Behaviour 2006). The provision of feedback helps reduce the likelihood of misinterpretation to occur in the workplace (Iyer & Israel 2012 p. 2). For example in an organisation that sells goods and services directly to customers, the organisation can evaluate their performance by encouraging feedback from customers based on employee service and conduct. ‘Customer feedback can help to identify problem areas and strengths, and generate ideas for service improvements’ (Wirtz, Tambyah & Mattila 2010). Measuring performance should not be seen as extra work but rather as part of normal business operations. Feedback should be seen as a method for continuous assess ment and improvement.In this sense, it can be seen as a strategic feedback system that improves communication within the organisation in general. Performance measurement leads to transparency and in turn drives innovation and creativity (Vos 2009). In conclusion, organisations do not have independent existence, they associate with many groups and individuals by means of effective communication and feedback to achieve their results and desired outcomes (Alger, Delahunty & Diamantopoulos 1997). Interaction with organisations occurs through different channels of communication and by different methods.All organisations and managers need to be aware of the communication patterns that occur within their environment to ensure effective communication (Alger, Delahunty & Diamantopoulos 1997 p. 117). The complex world of management today presents countless occasions to those in managerial positions to express their ideas and convince or persuade others to accept their ideas (Showry & Manasa 2 012). However, it can be an ordeal if one fails to focus on the critical foundation which is effective communication (Showry & Manasa 2012).Factors such as language, culture and emotions can undermine effective communication in an organisation but through feed-back achieved, communication discloses opportunities to improve the individual and general performances of the organisation (Daneci-Patrau 2011). From this essay we can draw on the significance of effective communication in an organisation and how the lack of it can result in decreased productivity, poor interpersonal relationships between employees and employers and be the cause of other serious workplace issues that could lead to other negative outcomes (Mallet Hammer 2005). ReferencesAlger G, Delahunty, J, Diamantopoulos, A 1997, Business Management, 2nd edn, Oxford University Press. Daneci-Patrau, D. 2011, ‘Formal Communication in Organisation’, Economics, Management and Financial Markets, vol. 6, no. 1, pp. 4 87-497. Dwyer, J 2009, Communication in Business: Strategies and skills, 4th edn, Pearson Education Australia, Frenchs Forest. Hitt,M A, Black J S, Porter, L W, Hanson, D 2007 Management, Pearson Education Australia. Iyer, S, & Israel, D 2012, ‘Structural Equation Modelling for Testing the Impact of Organization Communication Satisfaction on Employee Engagement’,  South Asian Journal Of Management, 19, 1, pp. 1-81. Kaymaz, K 2011,  Ã¢â‚¬ËœPerformance Feedback: Individual Based Reflections and the Effect on Motivation’, Business and Economics Research Journalvol. 2, no. 4, pp. 115-134. Klenk, NL & Hickey, GM 2010, ‘Communication and Management Challenges in Large, Cross-sector Research Networks: A Canadian Case Study’,  Canadian Journal of Communication, vol. 35, no. 2, pp. 239-263. Kumar, M & Chakravarthi, K 2009, ‘Cross-Cultural Communication’,  ICFAI Journal of Soft Skills, 3, 2, pp. 43-47. Lindebaum, D 2009, ‘Rhetoric or Remedy? A Critique on Developing Emotional Intelligence', Academy Of Management Learning & Education, 8, 2, pp. 25-237. Mallet-Hammer, B 2005 ‘Communication in the Workplace’ Research Paper, University of Wisconsin, viewed 14 August 2012 . Robbins, S, DeCenzo, D, Coulter, M & Woods, M 2011, Management: The Essentials, Pearson, Frenchs Forest. Showry, M & Manasa, K 2012, ‘Effective Communication for Professional Excellence’, IUP Journal Of Soft Skills, pp. 39-46 Smeltzer, LR & Wlatman L 1984, Managerial Communication-Strategic Approach, Louisiana State University, John Wiley & Sons.Tange, H & Lauring, J 2009, ‘Language management and social interaction within the multilingual workplace’,  Journal of Communication Management,  vol. 13, no. 3, pp. 218-232. Todarita, E & Ranf, DE 2009, ‘The Necessity and Efficient Usage of Managerial Communication within Organisations during Crisis Situations. Drawing-Up the Content of a Crisis Planningà ¢â‚¬â„¢,  Annales Universitatis Apulensis : Series Oeconomica,  vol. 11, no. 2, pp. 796- 804. Understanding and Managing Organisational Behaviour 2006, Delta Publishing Company, California.Vos, M 2009, ‘Communication quality and added value: a measurement instrument for Municipalities’, Journal of Communication Management, vol. 13, no. 4, pp. 362-377. White, C, Vanc, A & Stafford, G 2010, ‘Internal Communication, Information Satisfaction, and Sense of Community: The Effect of Personal Influence’, Journal Of Public Relations Research, vol. 22, no. 1, pp. 65-84. Wirtz, J, Tambyah, SK, Mattila, AS 2010, Organizational learning from customer feedback Received by service employees: A social capital perspective, Journal of Service Management, vol. 21, no. 3, pp. 363-387.

The Effect of RMB Revaluation in the Economy of China Dissertation

The Effect of RMB Revaluation in the Economy of China - Dissertation Example The Effect of RMB Revaluation in the Economy of China Table of Contents List of Tables 4 List of Figures 4 Chapter 1: Introduction 5 1.1Background of the research problem 5 1.2Statement of the research problem 5 1.3Research objectives 5 1.4Research questions 6 1.5Significance of the research problem 6 1.6Definition of terms 7 Chapter 2: Review of Related Literature 9 2.1 Chapter Overview 9 2.2 Currency revaluation and its effects 10 2.3 The fixed vs. ... The director also drew a plan of action if China did not withdraw the control of currency and permit the renminbi (RMB) to gain strength. The central bank of China known as the People’s Bank of China allowed for some relaxation. The bank announced that will abandon the two year old peg. The peg has kept the RMB with the dollar (Yu, 2010, p. 2). It allowed RMB to respond according to the forces of the market. China will now begin to move into the regime of floating exchange rate. The regime will be a tight one which was in practice in the period between 2005 and 2008. The value of RMB will be the base on a basket of currencies within a narrow range (Wharton University of Pennsylvania, 2010). China believed that the stable RMB policy is good for the country from the time of the financial crisis of Asia. The country turned away from the exporters who were reported for violating the standards of pollution. The strengthening of the RMB against the U.S. dollar has continued unabated since 2005. It will follow the stable rising path since the country is under intense inflationary pressure (Wang and Whalley, 2007, p. 3). 1.2 Statement of the research problem The problem this dissertation seeks to resolve is: What effects shall the revaluation of the renminbi have in China’s economy, as well as in the world economy? The principal goal of the dissertation is to identify the impacts of the revaluation of the RMB on the economy of China. 1.3 Research objectives In adopting the research problem specified above, the research undertakes to achieve the following objectives: (1) To examine the necessity of a currency revaluation in

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The Foils of Hamlet - Essay Example He has every reason to be mad, since the new King Claudius and now husband to Queen Gertrude happens to be his own brother. The new King Claudius has issues too: He has to contend with a potential war from Norway’s Prince Fortinbras and his nephew and new stepson is being a little bit of nuisance, mostly because he cannot get the fact over that his mother (Gertrude) could not wait even for the dust to settle before marrying the new King. Hamlet’s bud Horatio informs him about the ghost and thus arranges a meeting. The ghost spills it all; that it is his late father’s spirit, proving that it is Claudius who murdered his father by pouring poison in his ear while Hamlet Senior was sleeping in his garden and then orders his son to take revenge. The show is now on and Hamlet’s master plan involves acting like a madman or a clown and the next time we catch a glimpse of Prince Hamlet, his girlfriend, Ophelia claims that he has gone nuts. Polonius notifies the Kin g of this new development and they decide to spy on the youngsters to ascertain if indeed Ophelia is the source of Hamlet’s â€Å"craziness†. At the same time a reprieve comes from Danish ambassadors from Norway with the news that there isn’t going to be any war, after all. ... This is a plan of Hamlet to watch Claudius’s reaction to ascertain if really the ghost is telling the truth. Hamlet’s plan is rolling out very well and he delivers the big â€Å"to be or not to be† speech about suicide. Instead he gets all creepy and gross with Ophelia before watching Claudius get up and shout that he is guilty. Hamlet plots to murder him, but then he doesn’t, he instead ends up accidentally killing Polonius who is his girlfriend’s (Ophelia’s) dad. Claudius gets angry with Hamlet and sends him off to England in front of his mother. However on the way, Hamlet sees Prince Fortinbras of Norway marching across the land to reclaim some lost territories. This inspires him to head back to Denmark to murder his uncle Claudius. Back in Denmark and in the castle, Ophelia has cracked and her brother Laertes is meanwhile very bitter with Hamlet for killing their dad and the current state of his sister. So Claudius persuades him to stage a friendly duel and kill Hamlet by using a sharpened rather than a blunt sword, with of course some poison as backup. Before we realize it, Ophelia is dead, most probably by suicide which means that she doesn’t even get a decent send off. Big scene is created between Hamlet and Laertes when Hamlet randomly stumbles upon this burial and the Hamlet gets Horatio to hasten up on his return: on the boat to England, Hamlet however opened the letter that his companions Rosencrantz and Guildenstern were carrying and found the plot to have him killed. Obviously, Hamlet changed the letter to say â€Å"Please kill Rosencrantz and Guildenstern, thanks,† and escaped on a pirated ship back to his Kingdom. On the last scene, as Hamlet engage

Museu de Arte Contemporânea de Niterói Essay Example for Free

Museu de Arte Contemporà ¢nea de Niterà ³i Essay The Niterà ³i Contemporary Art Museum (Museu de Arte Contemporà ¢nea de Niterà ³i — MAC) is situated in the city of Niterà ³i, Rio de Janeiro, Brazil, and is one of the city’s main landmarks. It was completed in 1996. Designed by Oscar Niemeyer with the assistance of structural engineer Bruno Contarini, who had worked with Niemeyer on earlier projects, the MAC-Niterà ³i is 16 meters high; its cupola has a diameter of 50 metres with three floors. The museum projects itself over Boa Viagem (â€Å"Bon Voyage,† â€Å"Good Journey†), the 817 square metres (8,790 sq ft) reflecting pool that surrounds the cylindrical base â€Å"like a flower,† in the words of Niemeyer. A wide access slope leads to a Hall of Expositions, which has a capacity for sixty people. Two doors lead to the viewing gallery, through which can be seen theGuanabara Bay, Rio de Janeiro, and Sugarloaf Mountain. The saucer-shaped modernist structure, which has been likened to a UFO, is set on a cliffside, at the bottom of which is a beach. In the film Oscar Niemeyer, an architect committed to his century,[1] Niemeyer is seen flying over Rio de Janeiro in a UFO which then lands on the site, suggesting this to be the origin of the museum. The MAC Scandal was a political scandal that occurred when the mayor Joà £o Sampaio inaugurated the Niterà ³i Contemporary Art Museum. The MAC is located on a hill slope that had locked construction rights set by the city council. Therefore in December 1996, the new mayor, Jorge Roberto Silveira sent a project to the city council to obtain the rights to construction in that area. The project was accepted in only two days, giving permission to build buildings up to 40 metres (130 ft). The city council did not know that days before, Zeca Mocarzel, sub-mayor of the Niterà ³is Oceanic Region (of Jorge Roberto Silveiras government) bought the lands at a very low price, claiming to the old owner that the region was locked and nothing could be done there. So he bought the area and, after the inauguration of the MAC which substantially increased the property values of the nearby areas, later sold the land for more than 5 million reals, approximately 1,250,000 US dollars at the time (2,720,000 dollars today). Because the scandal occurred just before Christmas, the people of Niterà ³i said that it was Jorge Roberto Silveira, Zeca Mocarzel and Joà £o Sampaios (long-time Niterà ³is politicians) Christmas present.

Minimize Counterproductive Or Deviant Behaviour Management Essay

Minimize Counterproductive Or Deviant Behaviour Management Essay Counterproductive and deviant behaviours can be found all around us, but matter largely in professional fields. When in an organisation, any deviant behaviour is detected; it is an indication toward a serious threat to organisation as well as the staff from different perspectives. In human resources, deviant behaviours of employees and managing them have gained increased attention due to a range of reasons. For the success of an organisation, management of deviant and counterproductive behaviours is very critical. In this essay, the causes behind deviant behaviours, their influence on the employees, the person and organisation as a whole and the ways to manage/ minimise these deviant behaviours will be addressed. Counterproductive behaviours have become a workplace norm and its popularity is rising gradually. It is very obvious that workplace situations vary and therefore, they leave an impact on employees as well. These deviant behaviours by the employees not just harm the organisation but also affect other organisational members (Spector Fox, 2002). Counterproductive Workplace Behaviours are the acts by the members of an organisation, which are against the organisational legitimate interest (Sackett, 2002). These are intentional as well as unintentional behaviours, resulting from different causes and motivations. It has been identified in journal of organisational behaviour (2008) that an estimated 75 per cent of the employees do engage in such deviant harmful behaviours like; unexcused absenteeism, sabotage, theft, and vandalism cooperate (McGurn, 1988; Harper, 1990). Other such behaviours that have been reportedly found are sexual abuse of women (Gruber, 1990), organisational cynicism (Wilkerson, 2002), withholding efforts (Kidwell Bennett, 1993), spreading rumours (Skarlicki and Folger, 1997), physical assault and verbal abuse (Spector and Fox, 2002), lying (Depaulo and Depaulo, 1989), and absenteeism (Johns, 1997). These behaviours violate organisational working standards and can be antisocial (Robinson Bennett, 1995). Also they may affect the overall performance, decision making and even the organisational financials which can be very costly and harmful for the organisations wellbeing. Many researchers have identified a direct link between the personality traits of the employees and the Counterproductive behaviour at workplace (Salgado, 2002; Colbert, Mount, Harter, Witt, and Barrick, 2004; Dalal, 2005; Blickle, Schlegel, Fassbender, and Klein, 2006; Berry, Ones, Sackett, 2007). However, it has also been viewed that many times, even intrinsically honest employees are forced to behave inaptly, if the work environment or management are unjust towards them; or if they have been treated poorly. Managers are also seen to be the ones creating such workplace environment unintentionally where they are basically contributing towards their employees deviant acts (Greenberg, 1997). Therefore only personality is not a sole predictor of deviant workplace behaviour (Robinson and Greenberg, 1998) and many other factors contribute in counterproductive workplace behaviour. The management in turn fires the honest and capable employees so as to diminish these deviant organisational behaviours, but counteractively they need to put in a lot of efforts towards identifying the real causes of these behaviours and should wisely minimise these acts. The focus of this essay throughout the rest of the paragraphs is to critically identify the causes behind counterproductive workplace behaviour, the extent to which these behaviours influence the workplace norm, its overall power and how these behaviours can be minimised. Therefore, in a sequential manner, all of these points will be analysed. Countless factors influence counterproductive behaviour which consists of acts that harm or are intend to harm the organisation or its stakeholders. A vital aspect is to identify the reasons behind that, why employees are involved in these deviant behaviours. There are certain factors that influence counterproductive behaviour, identified by Litzky, Eddleston Kidder (2006), which are under the direct control of manager that may unconsciously force the employees into engaging in deviant behaviours like; unsatisfactory compensation or rewarding structures, unfair employee treatment, negative attitudes, social pressures to conform, job performance ambiguity and violation of employees trust. Competing for financial rewards causes employees to think only for themselves with the belief that nonstandard behaviours are compulsory to get ahead in their career fight (Crossen, 1993; Peterson, 2002). Managers are identified to be often as the main cause behind workplace theft, because many of them ignore such issues in order to conform to the social pressures, and thus encourage other employees to engage in similar deviant behaviours (Greenberg, 1997). These research studies have found that financial rewards are one of the prime reasons behind the counterproductive behaviours of employees. Not only for competing and leaving the colleagues behind, but also in the run of gaining more financial rewards, these employees sometimes do not feel reluctant to take aggressive actions. Deviant behaviours is one such acts that these employees are found to be practicing. Another research study (Fodchuck, 2007) revealed that both the employee characteristics and the workplace environmental aspects are linked with counterproductive behaviour in an organisation. Organisational factors like job design, workplace injustice and perceived stress initiates these behaviours and individual characteristics that helps in triggering CWB consists of self-control, will power, sensation seeking (Marcus and Schuler, 2004), and motives (Rioux and Penner, 2001). All these researchers have argued that these environmental aspects are increasingly linked with the deviant behaviour in the organisation. A management journal, (Robinson OLeary-Kelly, 1998) termed Counterproductive workplace conducts as antisocial behaviour, because these acts are harmful for the organisation. As per this study, the antisocial behaviours of employees are influenced in work groups through social learning and social information processing method. The workgroup largely influence an individual employees antisocial behaviour, and CWB of a workgroup is a significant predictor of the individual employees CWB at work. A study conducted in 2008 (Skarlicki, Barclay Pugh) explain downsizings and layoffs as the major factor behind counterproductive behaviour by the employees because most victims, who lose their jobs, are loyal workers and consider this management decision as an unfair treatment towards them. These employees in turn engage in organisational retaliation as revenge to their wrongdoer. Their negative emotions emerge by bad mouthing about the organisation to the organisational members and others, conveying a strong negative impact of the company. This retaliation is very similar to previously defined antisocial behaviour (Giacalone and Greenberg, 1996), counterproductive behaviour (Fox and Spector, 2005) and organisational deviance (Robinson and Bennett, 1995) thus overlapping with the duskier side of the organisational behaviour theories with potentially negative consequences for the organisation and other individuals. Many times in such situations even the informational justice and supp orting information does not help to be effective in reducing this retaliating behaviour (Dalal, 2005). All of these research studies have discussed that these factors extremely play their role to generate deviant behaviour among employees. Another study by Smithikrai (2008) suggests that personality traits and Counterproductive workplace behaviour have a direct link with each other; however, situational moderators in which counterproductive workplace behaviour takes place can increase the cogency of personality measures in predicting deviant behaviours. Situational factors in relation with personality traits are strong stimulators of counterproductive workplace behaviours. Individual behaviour reflects relevant traits when the situation is week, whereas when the situations are strong then the behaviour of the employees are clear, and they meet the behavioural demand of the situation (Blickle et al, 2006; Robinson Greenberg, 1998; Marcus Schuler, 2004). Therefore situational strength is very much critical in identifying these deviating individual behaviours, and in strong situations the employee performance gets monitored where Counterproductive workplace behaviour is not tolerated (Berry et al, 2007; Greenberg, 1997) . Wilkerson, Evans Davis (2008) conducted a study testing evidence of the co-workers social influence on other employees bad mouthing, organisational cynicism and supervisor assessments of employees organisational citizenship behaviour (OCB). The study suggests that the badmouthing behaviour of close co-workers largely impacts other co-workers, influencing their similar behaviours, due to the result of social information processing. Further the study advises that there also becomes a possibility of a chain reaction effect, where the organisational cynics are likely to engage other in their bad mouthing behaviour, creating other cynics within the organisation. This results in negative performance outcomes, reduction in management trust and further intentions of engaging in OCB (Litzky et al, 2006; Crossen, 1993). Bad mouthing has found to be one of the critical factors behind generating deviant behaviour. Yet another research by Tepper, Henle, Lambert, Giacalone and Duffy (2008) states that abusive supervision consequences in lower level of employee commitment with its employer, leading to little desire of working with the organisation, lower level of attachment with the organisation resulting to greater deviance against the organisation. This explains that effective employee commitment is estimated to facilitate the relationship between abusive management and organisational deviation. Abusive supervision is yet another costly workplace factor impacting negatively on employees, employer as well as organisational performance (Litzky et al, 2006; Crossen, 1993). Research study by jones (2009) have a different viewpoint, stating that there are different relations among different types of injustice, desire toward revenge and counterproductive work behaviours with ones supervisor and organisation separately. The results identified that counterproductive workplace behaviours related with organisation can be minimised through increase in procedural justice whereas behaviours related to supervisors can be minimised when the supervisor treat their employees fairly, with dignity, and respect as well as provide justifications for decisions that influences them (Litzky et al, 2006; Crossen, 1993). There are many factors identified that influence instigate deviant behaviours by the employees (Peterson, 2002). Of all these factors influencing Counterproductive behaviours every aspect has strong and weak impact over the behaviours, depending on the situation and the individual (Crossen, 1993). Age, cognitive ability, self-control, emotional intelligence and personality all correlates and create strong or weak affect over these behaviours by the employees (Fodchuk, 2007). Therefor situational moderator and personality mediator helps in increasing or decreasing the power of these behaviours by the employees (Rioux Penner, 2001). Reduction of these deviating behaviours in an organisation begins with recruitment and selection phase of hiring new employees through the use of personality testing, cognitive ability screening, and integrity screening (Marcus Schuler, 2004). But since situational factors emerge out of routinely day to day operations of the organisation including organisational constraints, illegitimate tasking, lack of compensation and rewards, interpersonal conflicts and lack of organisational/management justice thus organisation needs to involve much more into minimising these behaviours (Robinson et al, 1998). Mangers are equally liable and in a better position to control and minimise these behaviours within the organisation (Giacalone Greenberg, 1996). If the outcome is similar by different employees on a particular position, then this can be termed as a warning for the manager to identify his personal behaviour and management ability (Robinson Bennett, 1995). It is the job of manger to create an ethical working environment so that inherently honest employees do not turn their behaviours into negative and counterproductive ones (Skarlicki, et al, 2008). Apart from this building reliance relationships, creating ethical policies and procedures, setting achievable targets, creating effective supervision and monitoring performance ultimately helps in toning down the deviant behaviours of the employees in the organisation (Depaulo Depaulo, 1989; Smithikria, 2008). Similarly one step that the organisation can take into reducing these behaviours can be through enhancing organisational justice, allowing workplace participation of employees, maintaining communication, and paying close attention to identification of signs for interpersonal conflict (Tepper et al, 2008; David, 2008; Spector, 2005). Besides this lay off, employees needed to be financially supported and should be well informed in advance, or given a notice period so that they may not bad mouth the organisation and put its integrity at stake. Making other opportunities available to them after some time period also helps (Wilkerson et al, 2008; Jones, 2009) In the last, combating deviant and counterproductive workplace behaviours can be costly and very much time consuming but organisations are in a much predicted position of minimising these behaviours through identifying the main factors and taking actions in reducing it, which would thus increase the organisational performance, workplace environment and the overall success.

Media Streaming Techniques

Media Streaming Techniques Chapter 7 : Media Streaming and Storage In this chapter, we learn about media streaming techniques and typical devices used within streaming. Streaming is the process of media delivery via computer networks, most notably the internet. Learning Outcomes To explain streaming and how media is transmitted via computer networks To give an outline of the encoding and storage of video material. Media Streaming is the process of transmitting audio and video signals via computer networks, most notably the internet. It requires three parts, a source (to encode the stream), a server (to host the streaming service), and a browser or player (to view the stream). Streaming is an increasingly important technology to learn about as content continues to be delivered to a variety of internet connected devices. Internet Protocol Television (IPTV) is effectively streaming programmes (both TV and radio) and movies over the internet instead of terrestrial broadcast. The media streamed may be live (e.g. news) or on-demand (e.g. movies, programmes etc.). IPTV is usually over a ‘closed’ or ‘subscriber’ network e.g. VirginTV (UK) with a specified minimum Quality of Service. This should not be confused with Internet TV (a.k.a. Web TV) which is transmitted using the same protocols but primarily consumed via a web-browser on the ‘open’ internet (eg. BBC iPlayer). 7.1 Stream Creation 7.1.1 Capture The media stream can be pre-recorded or a live feed that is ‘captured’ and run through an encoder. An audio live feed can be used for internet radio; it requires a sound card to capture the audio input. Sound capture devices can be internal (eg sound cards or integral computer motherboard device) or external devices (e.g. audio interface) though it would be wise to review the earlier chapter on professional versus domestic signal levels before assuming that a built-in motherboard can handle your incoming audio signal. Similarly, live video is via a camera (webcam – poor quality, or video camera – higher quality) but the capture device is typically by video capture cards, IEEE 1394 connection (aka Firewire) or for domestic quality, a USB device. Some USB plug-in devices carry both audio and video signals; it is the software in the encoder that is set to look for where the feeds are attached to the computer. Current tablet and smart-phones can be used as internet streaming devices. These, along with some cameras, are already ‘cloud connected’ for storage and sharing while IP-Cameras (viewable and controllable on streaming sites) can be used for home security etc. It is possible that these will become more ubiquitous and have greater streaming functionality in the future. 7.1.2 Encoding Encoding is performed by an encoding software package such as Adobe Flash Live Media Encoder. A ‘live’ feed or pre-recorded media must be compressed and fed into the stream at a suitable bit rate and in a format with which the media server can cope for the purposes of ingest and re-direction. It is necessary for any audio video compression process to have the right decompressor at the play-out destination. Compression (bit-rate reduction) at the transmission end can be in either one or two pass encoding and at a constant bit rate (CBR) or variable bit rate (VBR). Live encoding must be done in real-time ‘on-the-fly’ so it is a one pass encoding i.e. the image data is analysed and compressed once. Pre-recorded data can be a multi-pass (usually two-pass) process so the quality of the encoding is higher, but is not used in live stream encoding. Constant bit rate (CBR) is used for media streaming as the encoding quality and feed to the server remains at the same bit rate, so can be at the maximum level the process will allow. Variable bit rate (VBR) is controlled by the bit rate range (Minimum – Maximum) or the average bit rate (each pass is averaged, and then several averages are re-averaged) to achieve a close to uniform bit rate for the stream. Variable bit rate is used for a multi-pass encoding process. 7.2 Network Connectivity 7.2.1 IP address (Internet Protocol Address) Every computer device that can be connected to the internet requires a unique address so that it can be found, rather like a telephone number. So to host a media stream that can be found on the internet, the media server requires a static IP address. Like telephone numbers in a directory, IP addresses are convertible to meaningful names by a Domain Name Server (DNS) process running on a web-hosting server. Consequently media servers and web-servers are closely coupled, and media is capable of being found using a web-based URL (Uniform Resource Locator) such as www.youtube.com. The source device (the computer or IP enabled camera etc.) needs to be found by the media server. This means the device has to ‘join’ the media server’s network (a more permanent connection) or pass on its IP address for the session (a temporary connection lasting until the session ends). Network Router The link between the source device and the media server may not be a direct connection, but may run through other connecting devices (network servers and routers). A router is a device that redirects data to another connected device either on its own or another network. This is basically how the interconnectivity of the internet works, routing between the server acting as the source device’s internet service provider to other networks and finally being re-directed to the destination. Multiplexer (MUX) Obviously it would be inefficient if the stream of data being passed to a media server is solely dedicated to one source device. This is a poor use of bandwidth, (bandwidth being the range of frequencies available in the data stream), so multiple devices are streamed simultaneously. A multiplexer (MUX) is a device that is used to combine input streams into a single output stream which is then split back into individual streams using a de-multiplexer (DEMUX). Figure 7-1 : Multiplexer to Demultiplexer 7.2.2 Web-Host Servers For a stream to be found it must be made available to web-browsers or stand-alone players (e.g. Windows Media Centre). The web-host server handles the web-site connectivity but need not be the same computer as the media server but both need a connection between them that isn’t prone to interruption. This web site often has a web page (HTML –HyperText Markup Language) with a plug-in media player connected to the media stream being managed by the media server, and contains the web-site in which the page resides. Consequently it must link to the internet and Domain Name Server process to resolve the IP Address from the web-site name, so the routing can direct the end user’s browser to the host. Figure 7-2 : Connection diagram The browser only needs to connect to the internet via its Internet Service provider to link to the media stream’s web-host server (see figure 7-2 Connection diagram). Hence any internet device with media playing capability could view the stream including smart-phones, tablets and PCs providing it has the right decompressing codec and can manage the bit rate of the stream from the media server. This is why it is important to offer various streams of differing quality, bit rate and formats (e.g. a Windows Media Video .WMV format file may not play on an iPad without a conversion app). A further file often created at the time of the stream hosting web page is an announcement file. These are particularly important to make potential viewers aware of the content and set links to the media stream. Podcast and Vodcast Podcasts are audio files that are available for download from a web hosting service (vodcasts are video inclusive podcasts) and differ from media steaming in so much as the content is downloaded then played on the user’s device. Streamed media is viewable but not downloaded to the device. They are often announced by RSS feeds (a short web content file) to which your device has been connected. 7.3 Media Streaming Servers A Media server is additional software that runs on a typical web server (or file server with web-host server connection). It requires a static IP – so its address does not alter on each session). The media server software needs to add additional protocols to those found on a simple web-server. In addition to Hypertext Transfer Protocol (HTTP) which is inbuilt with the web server, these additional protocols differ for proprietary server software. Real Time Messaging Protocol (RTMP) is for Adobe Flash systems along with HTTP Dynamic Streaming (HDS). Microsoft Media Services (MMS) is no longer supported for windows streaming and now uses HTTP and Real time Steaming Protocol (RTSP), and finally there is an HTTP Live Streaming (HLS) protocol which is for Apple iOS based systems. Adaptive streaming (HDS, HLS and Microsoft Smooth Streaming) requires the stream to be fragmented (which is how HTTP delivers content) and may utilise the MPEG-DASH codec. Adaptive streaming is where the content is streamed as fragments in a variety of bit rates with the computer automatically selecting the next most appropriate sized fragment based on its current playback state to minimise buffering. This differs from the older method of providing different dedicated streams at constant bit rates and the client selecting one most appropriate to their computers (or routers) connection capability. 7.3.1Content Delivery Unicast In a Unicast scenario the client connects to the server on a one-to-one basis. The number of clients is limited by bandwidth considerations. Multicast In a multicast scenario the server streams to a multicast IP address (this is a special address on the client’s network). This is a one-to-many basis and is an effective means of reaching many clients with less bandwidth overhead. UDP v TCP All content (including streams) is delivered across a network in packets. In User Datagram Protocol(UDP) the stream is sent without checking the connection and no acknowledgement of receipt is made. UDP is seen as unreliable but it is simpler and quicker. Transmission Control Protocol (TCP) is bi-directional so will check for receipt and retransmit missing packets. TCP is seen as reliable but slower. A good discussion on this is at http://en.wikipedia.org/wiki/User_Datagram_Protocol#Comparison_of_UDP_and_TCP 7.3.2Live Streaming A live stream needs to be seen at the time of broadcast. A live stream needs connection to a publishing point on the media server which connects to an encoding device. This may be another computer or a camera with IP addressable capability. The publishing point provides the connection between the content (live stream or pre-recorded) and the client’s computer which links to it via a web-host request from the internet. 7.3.3 Video on Demand (VoD) If the stream is recorded then it is treatable in the same way as any pre-recorded media file. Note:, it is not advisable to record an encoded stream and then re-encode it as this would severely compromise its quality. Streams and Playlists Media streaming servers can have many pre-recorded files ready for streaming, often collected into separate playlists (one media file plays immediately after another). These playlist or file streams can be on a continuous loop, or awaiting selection by a viewer through the browser. This latter selection method is called video–on-demand, although it equally applies to audio files as well. Bandwidth considerations A media server can manage several streams and be linked to several web-hosts at the same time. This requires careful planning of the number of streams the media server can handle which is a function of its bandwidth connection. The more simultaneous streams being handled then the less the size of the bit rate is available for each of those streams. If a media server has a 1Gbit/second connection then it could only handle 1000 x 1Mbit/second streams. However, full utilization of the bandwidth like this is not normally done; there are recommended bit rates for video streams based on destination image size and aspect ratio, e.g. a 1280* 720 HD video with stereo audio will require around a 2.5 Mbit/sec rate. A good source for this is: http://www.adobe.com/devnet/adobe-media-server/articles/dynstream_live/popup.html Push Pull The relationship between the encoding source device and the media server is based on which device initiates the stream. i.e. it is PULLED from the source device by the media server (needed for video-on-demand), or it is PUSHED to the server by the source device to start the service (a broadcast need). The media server needs to know how the stream is to be initiated for it to start the service. 7.4 Storage 7.4.1 Read Write speed All devices that are used to store data (including audio and video) need to be able to write to the storage device faster than the transmitted data is fed to it, otherwise it must buffer (temporary memory store on a faster device) and then read from the buffer to maintain the data transmission sequence. Consequently if a device is used that cannot cope with the data transmission rate than it will fail or lose data e.g. using a low class SD card in a camcorder. Data is written to storage devices and stored in a binary format but unlike data transmission the Kilo/Mega/Giga/Terra sizes are based on multiples of 1024 (210) not 1000. The speed of data being read from a storage device may be slower than required to play in real-time which would result in its being prone to stutter and freeze. 7.4.2 Simple Storage Devices Considerations Tapes – early tapes (DVCAM, DV) required striping. This was to put a continuous time code on the tape before recording – however later tape devices (including mini-DV camcorders) made this unnecessary, though any discontinuities or repetitions in the timecode could cause problems when ingesting material to an editing workstation. Cards – cards such as SDHC have a class rating which will denote the read/write speed of the card in Megabits per second, and storage size in Gigabytes. Always check to ensure the card will work with the device and check to see if there is a device firmware update, particularly if the device is more than a year old. USB sticks as with cards their read write speeds differ wildly – check using an on-line speed testing application, it is usually better to transfer video files to a hard disk before using the file for playback or editing. CD and DVD disks have a read/write speed depending on the quality of the disk (recording speed), but another consideration is the data rate used in the writing process from such software as the video non-linear editor (NLE). An ‘average’ bit rate (based on Peak and minimum Variable bit rate (VBR)) or ‘constant’ bit rate (CBR) needs to be selected, that will not only write to the disk but allow the disk to be played on the output device. Computers can write to disks comfortably at 9 – 11 Megabits per sec. But this needs to be slower (around 5 Mb per sec) if writing to a DVD that is to be played on an older standard-definition DVD player. You should consider the bit rate as part of your consideration of overall file size and the storage capacity on the disk. A good explanation of data rate calculation is given in:-https://helpx.adobe.com/encore/using/project-planning.html#bit_budgeting Hard Disks – Many older hard disks (often found in laptops) spin at 5400 rpm, this is too slow for video playback and a minimum 7200 rpm disk is needed. Hard disk read write at around 50-150 Mbytes per sec. SSD Solid State Disks are now finding favour due to faster read/write speeds than traditional hard disk technology. SSD read write speed is between 200-500 Megabytes per sec. 7.4.3 Network Storage Connection speed Any network storage has to pass data via the network card (NIC network Interface Controller), this needs to be as fast as possible (preferably a fibre connection of 1Gbits per sec but a minimum of 10 Mbs for Ethernet). Unlike other storage considerations network traffic can be bandwidth throttled (i.e. the bit rate is reduced) and will affect speed. If the NIC card is under your administration always set it on maximum performance. NAS, SAN, Cloud NAS (Network Attached Storage) is what most people think of as network storage- an array of hard disks that allows for file storage remotely from your computer directly accessible via the network. SAN (Storage Area Networks) are a separate network but pretty much do the same job as NAS differing in access protocol. The Cloud is just another remote storage area (uses SAN technology) but accessed via the internet (typified by a URL connection – Uniform Resource Locator) not a local area network LAN connection (typified by a UNC connection – Universal Naming Convention). 7.4.4 Raid RAID (Redundant Array of Independent (or inexpensive) Disks) allows the disk storage to have a measure of redundancy and/or striping to create a secure method of retrieving data should there be a disk failure. For media technology only a few RAID levels (configurations) are used (i.e. Levels 0 and 5 – see figure 7-3 Raid diagram). Level 0 – usually this requires at least two disks and the data is striped across them. (Note: It can be put on one physical disk using two logical drives – but with little advantage). That essentially means data is split into blocks and distributed across the disks. Typically used in video storage applications as it is fast, there is no redundancy (no duplication) so recovery from a disk crash is almost impossible. Consequently if a disk fails then the file may not be fully recoverable. If you have RAID 0 on your disks, always be sure to keep an external copy of your original audio or video files. Level 1 – disk mirroring, requires at least 2 disks but is slow as it writes the same data twice (once to each disk). Data is easy to recover as the system has full redundancy (disk duplicated). This level is good for general data and possibly audio only files. Many video editors feel this level is too slow for working with video files. Level 5 – block striping and parity. This requires 3 disks minimum, data is striped across all the disks (except one) and the block parity is put on the excepted disk. This is done repeatedly using a different disk for parity on each block. One disk can fail and be rebuilt from the others by using the parity blocks on remaining disks. Raid 5 is also popular with video editors as long as the raid controller is fast enough. It is slower than level 0 but faster than Level 1 and has enough redundancy for disk recovery.

vera drake :: essays research papers

Vera Drake Vera Drake is a film nominated for several Oscars, and a completely successes for Mike Leigh, who is both director and writer. The film is set in London in the early 1950s. Vera Drake lives with her husband Stan, and her two grown children Ethel and Sid, in a small middleclass flat. Vera is a domestic who cleans the houses of rich women, while Stan works at a mechanic shop run by his brother Frank. Vera has a heart of gold, and is cheerful at anytime, even though she got plenty of work to do, and lots of people to take care of. She sings and smiles anyhow, and has a tremendous care and compassion for others. She also has time to help out women in need, as she calls it. This is her big secret that no one in her family knows of, and a secret that she intends to keep secret. When she says â€Å"help women in need† she means poor pregnant women who are not willing or able to give birth to a child. She works closely with Lily, a friend from her childhood, who sells households goods on the black marked and find women seeking abortions. She charges the women for money, while Vera does not take anything for helping them out. Vera’s secret comes to a brutal end, after one of the girls she has treated gets deadly sick, and the police get involved. Abortions were not legal in the 1950s in England, and therefore Vera is committing a crime. By the time Vera and her family is g athered to celebrate the announced wedding between Reg and her daughter Ethel, the police comes knocking on their door. Vera is taken in to custody and is very afraid to tell her family the truth, but still does not think what she has been doing as anything wrong. The theme of the film is obviously abortion, and those plenty questions concerning abortion. This has been a well debated theme for a long time, but Mike Leigh sees no obstacle in that. The question whether abortion should be legal or not, is still a big political issue, and it does not seem like politicians round the world has come to an agreement just yet. Even though this theme is highly debated beforehand, it does not make this a boring film. It is more opposite, and that is why I feel that Mike Leigh give us viewers a different angle than many others would have.

Clubfoot Essay -- essays research papers

CLUBFOOT   Ã‚  Ã‚  Ã‚  Ã‚  Clubfoot is defined as a congenital foot deformity characterized by a kidney shaped foot that turns inward and points down. The forefoot is curved inward, the heel is bent inward, and the ankle is fixed in planter flexion with the toes pointing down. Shortened tendons on the inside of the lower leg, together with abnormally shaped bones that restrict movement outwards cause the foot to turn inwards. A tightened achilles tendon causes the foot to point downwards. The medical term for clubfoot is talipes equinovarus . It is the most common congenital disorder of the lower extremity. There are several variations, but talipes equinovarus being the most common. Clubfeet occurs in approximately 1 in every 800-1000 babies, being twice as common in boys than girls. One or both feet may be affected.   Ã‚  Ã‚  Ã‚  Ã‚  The history of clubfeet began as far back as 400 B.C. Hipocrates was the first to describe it. He used bandages to treat it. As time progressed so did the treatment methods. In about 1743 gentle stretching was recommended. During that same century, a mechanical device resembling a turnbuckle was used to help stretch the tendons. By this time clubfoot was pretty well known around the world, using the typical stretching and splinting methods. In the 1800’s plaster of paris was first introduced, and later that same century, the introduction of aseptic technique and anasthesia diminished, but not eliminated infection. As...

Comparing William Wordsworths Composed Upon Westminster Bridge and Wil

Compare and Contrast William Wordsworth's Composed Upon Westminster Bridge and William Blake's London William Wordsworth and William Blake wrote poems about London, but they presented their views from different angles. Wordsworth sees the beauty in London and Blake sees only the ugliness. William Wordsworth's "Composed Upon Westminster Bridge" gives a step-by-step look at the awe-inspiring beauty of a London sunrise, whereas William Blake's "London" shows the dreary ugliness of London life by taking a stroll down London's streets. "Composed Upon Westminster Bridge" affects the reader with a sense of wonderment at the beauty that is created with a sunrise. London appears to be the most beautiful place on earth during a sunrise. The sun bathes the city in light and gives the reader a sense of purity and cleanliness. "London" affects the reader with an opposite feeling. The reader sees the unsavory side of London in the faces of its citizens. The citizens of London are unhappy with their lives, but they accept it with resignation. It is appalling how the Church uses the small chimney-sweeping children to clean the soot of London and the poor become soldiers that die for the monarchy. The purity and cleanliness of London is lost when young women become prostitutes. The death that falls upon a marriage is often transmitted through the diseases a prostitute passes on. A sense of anger is felt at a life that allows such sadness and darkness to fall upon the citizens of London. Wordsworth and Blake use different techniques in their poems to present their views. Wordsworth uses personification to bring the beauty of the sunrise to life. London takes on human traits with "This city now doth, like a garment, wear! The beauty of... ...y emphasizing the dreary bondage of the London citizens in "London." Wordsworth's use of imagery and rhythm places the reader in a calm and peaceful situation. Blake's use of imagery and rhythm places the reader in an angry tension filled situation. Wordsworth's readers have the wonders of a sunrise unfold before them and beauty is seen everywhere. Blake's readers become angry at the ugliness and unfairness of life and bondage and resignation are seen everywhere. Both authors achieved their tasks admirably. Works Cited Blake, William. "London." Literature: An Introduction to Fiction, Poetry, and Drama. Ed. X.J. Kennedy and Dana Gioia. 7th ed. New York: Longman, 1999. 729. Wordsworth, William. "Composed Upon Westminster Bridge." Literature: An Introduction to Fiction, Poetry, and Drama. Ed. X.J. Kennedy and Dana Gioia. 7th ed. New York: Longman, 1999. 1157.

Characterization Of A Glycerol Based Polymer Environmental Sciences Essay

In oleochemical industry, glycerin ( 1,2,3-propanetriol ) is ever produced as a byproduct in the fabrication of acids, soaps, methyl esters, intoxicants or nitrogen-containing derived functions. It can besides be made from propene via epichlorohydrin ( 1-chloro-2,3-epoxypropane ) . However, the petrochemical supply path is less of import due to the increasing supply of glycerin from oleochemical industry, the high monetary value of propylene and the demand for epichlorohydrin for other intents ( Gunstone & A ; Henning, 2004 ) . Figure 1.1 Glycerol Glycerol possesses a alone combination of physical and chemical belongingss which are utilized in many commercial merchandises. It is hygroscopic, colourless, odorless, syrupy, sweet-tasting, low boiling point, non-toxic, demulcent, a good dissolver, and H2O soluble. Besides, it is easy biodegradable ( Gunstone & A ; Henning, 2004 ) . Furthermore, it is really stable under normal storage conditions, compatible with many other chemical stuffs, non-irritating in its assorted utilizations, and does non hold negative effects on the environment ( Pagliaro & A ; Rossi, 2008 ) . The glycerin market is presently undergoing extremist alterations, driven by really big supplies of glycerin originating from biodiesel production. The attempt to cut down the dependance on foreign oil has increased the production of biodiesel and glycerin is the major co-product from the transesterification procedure used to bring forth biodiesel. Hence, there is a demand to happen new utilizations for glycerin. Polymerization is one of the methods which big sum of glycerin can be used ( Wyatt et al. , 2006 ) . There two types of polymerisations. First, soluble merchandises are obtained irrespective of the extent to which the reaction is carried toward completion. The merchandises formed are chiefly additive polymers. The 2nd type of polymerisation is those that lead to gelled or indissoluble merchandises, provided that the reaction is carried far plenty. The reactants are capable of bring forthing big three dimensional molecules ( Flory, 1941 ) . Harmonizing to Flory ( 1941 ) , gelation occurs merely when there is the possibility of limitless growing in three dimensions. It is a important feature of polymerising systems to hold a aggressively defined gel point at a certain critical extent of reaction which is independent of temperature, sum of accelerator and so on. Through polymerisation of glycerin, the pre-polymers synthesized could be farther reacted to bring forth longer ironss of hyperbranched polymers. Hyperbranched polymers belong to the household of supermolecules known as dendrimers. Dendrimers are extremely branched monodispersed molecules produced by multistep syntheses. Preparation of dendrimers requires a high grade of pureness of the get downing stuff and high outputs of the single man-made measure. On the other manus, hyperbranched polymers are indiscriminately branched molecules prepared by a simple one-step reaction ( Wyatt et al. , 2006 ) via polyaddition, polycondensation, extremist polymerization, and so forth, of an ABn monomer ( Vogtle et al. , 2009 ) . Due to their alone combination of low viscousness, first-class solubility, and facile synthesis, hyperbranched polymers have received important attending ( Lin, Q & A ; Long, T.E. , 2003 ) . Chemical reaction of the functional A groups with the functional B ( matching ) groups of a 2nd monomer molecule gives rise to randomly branched molecule. Since the C groups are present in surplus ( n a†°? 2 ) , crosslinking are avoided from the beginning. Chemical reaction can be brought to a standstill by addtion of stopper constituents. Since the synthesis of hyperbranched polymers does non affect matching to core molecule, but merely ABn monomers react with one another. Both bifurcate molecules and additive sequences possibly formed ( Vogtle et al. , 2009 ) . Hyperbranched polymers produced from diacids ( A2 ) and glycerin ( B3 ) are an illustration of the AB2 system. AB2 monomers are non readily available and kinetic computations show that the first condensation reaction, which produces an AB2 species, is faster than the subsequent polymer extension. Therefore, the balance of the reaction progresses as polycondensation between AB2-type species prior to the gel point. Several methods have been used to avoid gelation in A2+B3 systems, including executing the reactions in dilute solutions or responding them in the absence of dissolvers while monitoring. This glycerol-based polymer is expected to demo similar belongingss and features as polyalkylene ethanediol ( PAG ) . A polyalkylene ethanediol holding the general expression: HO- [ R-O- ] n H in which N has a value of at least 2 and R is an alkylene extremist containing at least 10 C atoms. PAG liquid are used as man-made lubricators in many diverse applications. Therefore, glycerol-based polymers could besides hold the possible to be use every bit high public presentation lubricator, coolant or as a lubricant additive ( such as viscousness qualifier ) . Materials with polymeric constructions can be used in lubricator to heighten its belongingss, such as viscousness, pour point and so on. It can be used as get downing stuff for certain types of additives. These polymeric additives can be viscosity modifier, pour point sedatives, emulsifiers and demulsifiers, and foam inhibitor in lubricators ( Totten, G.E. et al. , 2003 ) . Oils can be effectual lubricators at low temperature. However, at higher temperature, they become less effectual. To get the better of this job, viscousness qualifiers are utile in minimising viscousness fluctuations with temperature. Viscosity qualifier is a polymer with mean molecular weights of 10000 to 150000. At all temperatures, viscousness qualifier is able to increase oil ‘s viscousness. The thickener of oil at lower temperature is less than that at higher temperature. At low temperatures, the polymer molecules busying a little volume have a minimal association with the majority oil. The state of affairs is reversed at high temperatures as the polymer ironss expand due to the increased thermic energy. Besides, at higher temperatures, polymers are more soluble and hence do the viscousness to increase ( Totten, G.E. et al. , 2003 ) . There are two types of viscousness qualifiers available commercially: olefin-based polymers and ester polymers. Polyisobutylenes ( PIBs ) , olefin copolymers ( OCPs ) , and hydrogenated styrene-diene ( STDs ) polymers. Ester polymers include polymethacrylates ( PMAs ) and styrene ester polymers ( SEs ) ( Totten, G.E. et al. , 2003 ) . Literature Review In a research done by Wyatt and his colleagues ( 2006 ) , fresh oligomeric prepolymers were synthesized by acid-catalyzed condensation of glycerin with iminodiacetic. The prepolymers were obtained after purification by chromatography in an mean output of 62 % . The compounds were characterized by utilizing 13C NMR, 1H NMR, matrix assisted laser desorption ionization-time of flight-mass spectroscopy, and gel pervasion chromatography. It was discovered that additive merchandises bearing cyclic urethane constructions were obtained in the reaction between iminodiacetic acid and glycerin. Qi Lin and Timothy E. Long ( 2003 ) studied the polymerisation of A2 with B3 monomers to bring forth hyperbranched poly ( aryl estrer ) s. A dilute bisphenol A ( A2 ) solution was added easy to a dilute 1,3,5-benzene tricarbonyl trichloride ( B3 ) solution at 25A °C to fix hyperbranched poly ( aryl ester ) s in the absence of gelation. The molar ratio of A2: B3 was maintained at 1:1. The maximal concluding monomer concentration was ~0.08 M. The phenol functionalities were quantitatively consumed during the polycondensation. This was showed in 1H NMR spectrometry and derivitization of terminal groups. Two theoretical account compounds were synthesized to place 1H NMR resonances for additive, dentritic, and terminal units. The concluding grade of ramification was determined to be ~50 % . The hyperbranched polymers exhibited lower glass passage temperatures compared to their parallels. J.F. Stumbe and Bernd Bruchmann ( 2003 ) besides used the A2+B3 attack to fix hyperbranched polyesters with controlled molecular weights and belongingss. The procedure was carried out by responding glycerin and adipic acid without any dissolvers. Tin accelerators was used. The merchandises were evaluated by size exclusion chromatography ( SEC ) analysis and NMR spectrometry to find molecular weights and grades of ramification. A survey was besides carried out on the glycerin esters from reaction of glycerin with dicarboxylic esters. The glycerin esters were synthesized by the base catalyzed reaction of glycerin with aliphatic dicarboxylic acid esters ( such as dimethyl oxalate, dimethyl glutarate, dimethyl adipate, etc ) . Assorted parametric quantities that may impact the transesterification were studied in order to optimise the output of merchandises. The reactions were carried out by changing the glycerol/ester molar ratios. The optimal ratio was 4:1, whereby the measure of the monoester was 60 % after 8 h. The transition decreased somewhat when the grinder ratio exceeded 4:1. At higher temperatures, the sum of monoester in the reaction mixtures increased and it reached a maximal degree after 6 H when the reaction was carried out at 100 A °C to 120 A °C. It took 8 H at a lower temperature. However, the overall output at the terminal of the reaction was non affected by the temperature. The formation of both monoester and diester were produced in an overall output of 80 % after 15 H of reaction clip ( Cho et al. , 2006 ) . Sunder et. Al. ( 1999 ) carried out a controlled synthesis of hyperbranched polyglycerols by pealing opening multibranching polymerisation. Hyperbranched aliphatic polyethers with controlled molecular weights and narrow molecular weight distribution were prepared via anionic polymerisation of glycidol with rapid cation-exchange equilibrium. Glycidol which represents a cyclic AB2 monomer was polymerized in a ring-opening multibranching ( ROMBP ) . The anionic polymerisation was carried out under slow add-on conditions with partly deprotonated ( 10 % ) 1,1,1-tris ( hydroxymethyl ) propane ( TMP ) as the instigator. 13C NMR, MALDI-TOF spectroscopy, vapor force per unit area osmometry ( VPO ) , and GPC were used to qualify molecular weights and polydispersities of the polyols formed. The 13C NMR spectra used to measure the grade of ramification ( DB ) ranged from 0.53-0.59. A complete fond regard of hyperbranched polymers to TMP instigator and the absence of macrocyclics were showed in M ALDI-TOF spectra. There was no macrocyclics or hyperbranched supermolecule obtained, due to decelerate addtion. T.J. Mulkern and N.C. Beck Tan ( 2000 ) studied a series of blends of hyperbranched polyester with high molecular weight polystyrenes. The processability and compatibility in the blends were investigated as a map of volume fraction of hyperbranched polyols ( HBP ) added and responsiveness of the matrix stage. Due to its low viscousness and high responsiveness, HBP polymers are suited for reactive polymer blending. Through processing and rheological surveies, it was found that HBPs are effectual processing AIDSs. A important bead in the blend viscousness occurs instantly on add-on of HBP, even at degrees every bit low as 2 vol. % . In 1934, Herman Bruson discovered a man-made oil additive when he was researching the synthesis and possible applications of longer alkyl side concatenation methacrylates. Bruson ‘s innovation, polymethacrylates ( PMAs ) was found to hold the possible to work as thickening or viscousness index humanitarian for mineral oils. It increases viscousness at higher temperature more than at lower temperatures ( Kinker, B.G. , 2009 ) . The alkly group in the ester part of the polymer can be altered to obtain merchandises with better oil solubility and viscosity-improving belongingss. It besides have good compatibility with a big figure of refined and man-made basestocks. In a survey by Duncan and Turner ( 1997 ) , blends of lubricant basestocks with high viscousness complex intoxicant esters were produced. The blend comprises of a polyhydroxyl compound R ( OH ) N, a polybasic acid and a monohydric intoxicant. The complex intoxicant ester showed a pour point of less than or equal to -20A °C and a viscousness in the scope about 100-700 Central Time at 40A °C. The lubricating oil harmonizing to Duncan and Turner ‘s innovation has first-class prurience as determined by engine public presentation, vane pump trial, Yamaha Tightening Test, and reduced valve lodging. Besides, it has good stableness as evidenced by the consequences of RBOT and Cincinnati Milacron trials. The lubricator has besides unexpected biodegradability as measured by Sturm trial ( Duncan et al. , 1997 ) . Hunt et Al. ( 1993 ) carried out supercritical fluid extraction to analyze liquid poly ( alklene ethanediol ) ( PAG ) lubricators and sorbitan ester preparations. The PAG matrix was adsorbed onto silicon oxide and the selectivity obtained by this method was compared with that obtained by the direct extraction of adsorbed and unadsorbed PAG. Extraction was besides done for unadsorbed PAG through the in-line column and it was successful in dividing additives from all but the lowest molecular mass PAG oligomers. This extraction process enabled fractional process of the merchandise and could be used as a sample readying technique for farther spectroscopic analysis. It is hard to bring forth polymers with narrow molecular weight distributions by traditional methods. Supercritical fluid engineering is applied to get the better of the conventional methods. The solubilty parametric quantity of supercritical fluid can be tailored. Selective extraction and fractional process are possible from multi-component mixtures. The key to doing high quality polymers is to guarantee precise control of molecular weight and polydispersity at high output while maintaining residuary contaminations below acceptable tolerance degrees. Hernandez et. Al. ( 2005 ) tested the turn overing weariness of three polyglycols ( PAG-9, PAG-12 and BREOX-B-135X ) . Polyglycols ( besides called PAG or polyalkylene ethanediols ) are widely used in the lubrication industry. These compounds have really high viscousness indexes, really low pour points, a high thermic conduction with regard to mineral oils, hydrolytic stableness, etc. Rolling fatigue trials were carried out utilizing IP-300 criterion in order to obtain the word picture of the fluids. A four ball trial machine was used and 10 % life ( L10 ) and 50 % life ( L50 ) were obtained. The stress-time curves for L10 and L50 were besides determined. All polyglycols were tested under boundary lubrication government ( I » & lt ; 1 ) where in turn overing contacts the surface manner of failures prevails. In oils of the same household, the pressure-viscosity coefficient is comparatively changeless. An addition in viscousness improved the minimal movie thickness with the attendant addition of the I » ratio. Fatigue life is mostly a map of the ratio of lubricating movie thickness to composite surface raggedness ( I » ratio ) . Differences in I » ratio for the three polyglycols resulted in different grimness interactions and turn overing contact weariness lives. With respect to turn overing contact weariness, the pick of viscousness category should avoid grimness interaction, so that the lone manner of failure will be subsurface failure. Although mean force per unit area in the contact was the same, increase in viscousness from PAG-9 to BREOX-B135X improved the I » ratio from 0.18 to 0.34. At less I » & lt ; 1, operation is in the boundary lubrication government where turn overing contact fatigue life is short, but an addition of I » ratio cut down the grimness interactions a nd hence rolled contact weariness improved. An probe was so carried put by Garcia and colleagues on PC-SAFT volumetric and stage behaviour of C dioxide + PAG or POE lubricant systems. The densenesss of man-made PAG oil was measured from 283.15 K to 333.15 K while the solubilities of CO2 in this oil was measured from 253 K to 333.15 K. Molecular weight of the lubricator was estimated utilizing fast atom barrage ( FAB ) . Molecular weight and experimental densenesss were used to cipher characteristic parametric quantities of PC-SAFT theoretical account for several commercial PAG oils. Movable characteristic parametric quantities were used for POEs. The thermophysical belongingss and phase behavior of CO2-lubricant oil mixtures is of import for the design of infrigidation and air-conditioning. The go arounding fluid comes into contact with the lubricator used in compressors and a part of the oil is transported into the infrigidation circuit with assorted effects in footings of public presentation. If the oil is non-miscible with the refrigerant, the compressor may be damaged due to hapless oil return to the compressor. Oil may roll up inside the heat money changer tubings cut downing heat transportation capablenesss, enthalpy alteration and ensuing in an overall decrease of the infrigidation capacity and rhythm public presentation. In add-on, high solubility of the refrigerant in the lubricator may cut down the viscousness of the oil-rich stage and consequences in lower lubrication belongingss which gives rise to dislocation of the compressor mechanical parts. Hauk & A ; Weidner ( 2000 ) studied the thermodynamic and fluid-dynamic belongingss of C dioxide with different lubricators in chilling circuits for car application. The information of the binary mixture were measured at temperatures between 5 and 100 A °C under force per unit area of up to 150 saloon. The stage behaviour was observed qualitatively in a hugh-pressure position cell and was determined in an sterilizer based on a static-analytical method. The viscousness of the lubricator saturated with C dioxide was measured with an integrated vitreous silica viscometer. The pertinence of lubricators in car-climatization systems can be evaluated with the cognition of stage behaviour and the resulting viscousness of gas-saturated lubricantsThe stage behaviour of oils with C dioxide can be divided into three different types which are binary systems with closed miscibility spreads, systems with unfastened miscibility spreads, and systems that show barotropic phenomena. Oils that show barotropic behaviour in contact with tight C dioxide are non recommended as lubricators. Oils with complete or limited miscibility with C dioxide may be used. Firdovsi & A ; Yagoub ( 2006 ) investigated the man-made heat bearer oil composings based on polyalklene ethanediols. Thermal stableness, mass loss on vaporization at 250 A °C, 350 A °C and altering the specifications after heating at 300 A °C for 10 Hs were besides studied. The prepared PAGs have been taken as basic constituents for heat bearer oil composings. It was discovered that the specifications of PAGs such as viscousness indices, pour points, acerb figure and brassy points changed dramatically upon heat handling. In order to better the thermic stableness and viscousness indices, anti-oxidant and anti-foaming additives were added to the base stuff to make optimal composings. The obtained heat bearer oils showed comparable improved belongingss in comparing with commercially available heat bearers. Methodology This undertaking will be divided into 2 phases as listed below. Poly ( glycerol-diacid ) polymer will be prepared by utilizing different hydrocarbon concatenation length of diacids ( such as azelaic, succinic and adipic acid ) . The merchandises will be analysed in order to analyze their chemical and physical belongingss. Phase 1: Chemical reactions of glycerin with different hydrocarbon concatenation length of diacid compounds ( e.g. azelaic, succinic or adipic acid ) at different mole ratios, are carried out under N2. The mixtures were charged to a reaction vas equipped with distillment setup. The reaction merchandise is allowed to respond at the coveted temperature and clip. Acid value ( AV ) , hydroxyl value ( OHV ) and glycerin content will be measured to keep the reaction advancement. Optimization of the reaction parametric quantities will be studied by changing different reaction parametric quantities such as type and sum of diacid, reaction clip, temperature and force per unit area. The concluding merchandise will be washed, dried and characterised. Phase 2: The merchandises obtained will be analysed by utilizing both High Performance Liquid Chromatography ( HPLC ) and Gas Chromatography-Mass Spectrometry ( GC-MS ) . Other instrumentality such as Fourier Transform Infrared Spectroscopy ( FT-IR ) , Nuclear Magnetic Resonance ( NMR ) and Gel Permeation Chromatography ( GPC ) will besides be utilised to further corroborate their molecular construction. Physical belongingss of the merchandises obtained such as viscousness, solubility, brassy point, fire point, denseness, specific gravitation, biodegradability, and oxidative stableness will be performed. Expected consequence: Polymers ensuing from the copolymerisation of glycerin with diacids of changing C concatenation length, molecular construction, and composing will be obtained. Structures holding more than two free acid functionalities at the end-terminals can happen merely after ramifying. As the clip of reaction returns, the viscousness increases which limits the interaction between the reactants and the turning polymers. The H2O solubilty of the oligomers decreases with increasing concatenation length of the diacid monomers of the diacid monomers used in fixing the oligomers. This glycerin based polymers are expected to possess broad scope of applications such as cosmetics and lubricators.