Friday, June 7, 2019
Environmental Impacts Essay Example for Free
Environmental Impacts EssayThere is a large gap between developed and developing countries in terms of the attention given to environmental concerns. As a general rule, developing nations place the environment low on their list of priorities. Managing the ecosystem takes a buns seat to economic advancement and industrialization, which atomic number 18 seen as more pressing needs. On the other hand, developed nations generally take a more proactive role in environment management because they have the budget and the technology to do so.They have withal recognized that further economic development contri alonee no longer do without sustainable environmental practices (Organization for Economic Cooperation and Development, 2001). Stemming from this basic difference of priorities is the great disparity between the environments impacts on the wellness of people living in the First World and those living in the Third World. However, it is simplistic to assume that the former are invariably healthier than the latter. plot of ground it is true that developing nations use less environmentally- couthie practices, the sheer level of industrialization and commercialization in developed countries any(prenominal)times means that these countries produce far more pollution and thus create more health problems for their citizens. A comprehensive assessment of the interaction between human health and the natural environment is non possible given the length of this paper. Nevertheless, this essay will explore some differences between First and Third World nations with regards to two selected major public health issues, namely, station pollution and water supply pollution.Air Pollution Palo and Solberg (1999) have identified snow dioxide as the most abundant greenhouse gas produced today, and they cite it as the most critical contributor to international warming, a phenomenon that poses a grave threat to human health and security. Confalioneri et al. (2007) detaile d the exact nature of this threat in the Inter regimenal Panel on Climate Changes Fourth Assessment Report. Global warming first affects humanity by changing weather patterns. original temperature swings, irregular precipitation, rising sea levels, more powerful storms, droughts and heatwaves have all become more common as a direct result of global warming. These phenomena in turn negatively affect the quality and quantity of food, water and air available to human populations. These phenomena inflict a great amount of injury on human settlements and infrastructure as well. The worldwide spikes in malnutrition, infectious diseases, and deaths from utmost(a) weather events are all directly proportional to the increase of carbon dioxide in the atmosphere.The IPCC also warned that developing societies were at the greatest risk to these environmental pressures. Among these developing nations, Douglas et al. (2001) cited coral reef atolls and reef islands as the most prone because their evaluate of land loss are dramatically impacted on by incremental rises in sea level. They cited the rapidly disappearing land of the Maldives, the Marshall Islands, and some low-lying Japanese islands as some of the most alarming manifestations of global warming.They added that rise in sea levels has led not only to escalating land loss, but also to the contamination of underground water sources in nations such as Israel, Thailand and island states in the Pacific and the Caribbean. The combined loss of arable land and potable water caused by global warming does not only lead to malnutrition and disease but also to social pressures such as overcrowding in cities, which increase the emphasis on the human populations health.In addition, developing countries lack the infrastructure to protect their populations from the increasingly negative repercussions of climate change. In nations such as India, Bangladesh and Burma, relief efforts for victims of increasingly destructive storms a re routinely slowed down by the insufficient facilities, resources and personnel. However, it should be noted that developed countries are not immune to these calamities. The odd destruction wrought by Hurricane Katrina on a major U. S.city serves as a grim reminder of the vulnerability of First World nations to extreme weather events. Cooper and Block (2007) are only two of many Americans who have accused the United States Federal Emergency Management Agency (FEMA) of macrocosm prepared for natural disasters on paper, only to be caught flat-footed when Hurricane Katrina struck the city of New Orleans on August 29, 2005. Cooper and Block also blame FEMAs ineptitude for the unsanitary living conditions thousands of survivors had to endure for several weeks after the disaster.To this day, New Orleans has not fully recovered from the hurricane. Carbon dioxide emissions are not the only major source of air pollution. Other chemicals such as sulfur dioxide, nitrogen oxides and volatile organic compounds (VOCs) also pose substantive health problems. As Tang (2004) has underlined, these primary pollutants are doubly hazardous because they can react photochemically to create secondary pollutants, and these secondary pollutants can also support further chemical reactions which result in even deadlier substances.This type of air pollution is one of the most critical problems in China today, especially in the capital of Beijing. As one of the most rapidly developing countries in the world, China has seen an enormous surge in demand for fossil fuels to feed its factories and the equip transport of its citizens. In addition, China has much lower emissions standards for its automobiles compared to other countries, leading to more pollution produced per vehicle. Tang cited Song et al.(2003), who noted the sharp increase in respiratory diseases among Chinese living in urban areas, as well as many residents complaints about the chronic lack of visibility in Beijing. erst while again, these health problems are not limited to developing countries. In fact, this type of air pollution is acutely felt in megacities such as Los Angeles and London, where air quality is severely compromised by the millions of automobiles and the factories located in and around the city limits.However, developed countries are taking definite steps to decrease the pollution, with one guiding light exception. As Al Gore observed in the documentary An Inconvenient Truth (2006), the United States lags far behind its European counterparts when it comes to enforcing more environmentally friendly emissions standards for its automobiles. The discrepancy has reached the point where some American vehicles can no longer be sold in European countries because they no longer meet government environment safety standards.
Thursday, June 6, 2019
Investigatory Project Essay Example for Free
Investigatory Project EssayWe would like to dedicate this experiment we did to every mother, nannies, maids, and the likes who work hard each and every day or our lives. They, who sweat a lot reasonable to give us fresh, newly-washed and sweet smelling clothes. They, who doesnt only sluttish our clothes yet helped us to clean our minds and souls and has been in our journey ever since. This is for them to help in their daily work so that they wont be that exhausted and can still learn a great skin because we all know how doing the slipstream by hand can remove our skins modify. We defy experienced a lot in this experiment. Like, first time doing laundry, working our minds out and lot of things approximately laundry. This is probably one of the greatest experiments we had.I, Shei Solis would like to thank my mother for the support she gave me while I was doing my best in laundry and the help she gave when I dont know what to do at all. Im not usually doing the laundry that s why I had a rough time.I, Ma Get Tan would like to thank my mother who has taught everything t present is to know about laundry and my sister, Ma GellTan who helped us to do the experiment.To every maid, mothers, nannies, and everyone who does the laundry, thank you very much because you have kept our life clean with you washing our clothes. Right now, we have known what it is like to be washing clothes. It hurts your hands because of the friction and then your hands ordain get dry. Weve finally known all the hardships youve done for us. And because of that, here is our little study that might help you to save not only your money but also your time, efforts, and your precious skin. EnjoyIntroduction We conducted the study because we precious to learn more about laundries, about the distinct kind of fabrics, the stains and others that might help us in our future paths that we might take like Fashion, all right Arts, or the likes.Also, we found out how very hard it is to do the l aundry thats why sometimes when the person doing the laundry got carried away their skins get dry or becomes rough. Thats why we conducted this study. We also found out that water can be one factor why doing the laundry can make our skin rough or dry.In doing this, we will be able to answer the questions every mother on what is the right purifying soap to use. We will be able to know what is more effective between the two soaps, namely Champion and Pride. What cleans faster and what whitens better.And from this research, mothers, nannies, maids, and all the ladies who do the laundry will be benefited. Because their work will be much easier if they would know the right detergent to use right from the start. They would save time, money, and energy from thinking and laundering. Just for example, they would use detergent that is very ineffective because they thought that that soap would be the best and when they used it, they already did all things to remove stains but *poof* nothing h appened. So just imagine using the products that are very ineffective, you will just waste time, energy, and money.Our study is not just about clothes. Its also about the different kinds of stains, the different fabrics, the different detergents, how to properly do the laundry and the effect of detergents on people who do the laundry by hand. Its for them to learn more about what they are doing to find the helpful brand of detergent powder.We conducted this study for two weeks. Three days for soaking the stained shirt, one day for washing it with detergent, and trinity days for making it dry. To find out more about our study, you can search the main two brands, the different kinds of stains, the different fabrics, home economics or you can just check our index where we got the information.
Wednesday, June 5, 2019
Professional development as an occupational therapist
Professional increase as an occupational therapistThe concept of reflection in learnedness is not saucily. It post be traced impale as far as Aristotles discussions of practical judgement and moral action in his Ethics (Grundy 1982 cited in Boud et al 2005a P11).In 1933, Dewy stated that there were two kinds of experiential process leading to breeding. The first process was trial and error and the second was that of wistful activity which baffling the perception of relationships and connections between the parts of the determine.(Boud et al 2005a P12). He explained reflection as a learning loop, continually feeding back and forth between the set about and the postal function. (Boud et al 2005a).In more recent times (1980s), ruminative practice has been introduced and divided into three core components Things that happen to a person, the reflective process that learning has occurred and the action that was flashn from this new perspective (Jasper 2003 p2). These empenna ge be summarised as experience-reflection-action cycle (ERA) and is a way that learning from experience good deal be soundless and developed.Kolb (1984 cited in Jasper 2003) developed an experiential learning cycle which has been suggested to be the most effective way of learning from our experiences by linking surmisal to practiceObservation-Something that has happened to youOr that you ache doneAction Reflection reviewing event or experience in your mindConcept development/theorising-Under rest what happened(Kolbs experiential learning cycle 1984, cited in Jasper 2003 p3)As illustrated, reflection is an important part of the learning loop. other significant part of reflection is that the process of learning continues so that the disciple changes from Actor to Observer, from detail involvement to general analytic detachment creating a new experience to reflect and conceptualize at each stage (Moon 2005 p25).It has been suggested that reflection itself can be identified into two types of ways reflection-on-action and reflection-in-action (Schon 1983). Reflection-in-action is reflecting while doing the action, which occurs subconsciously, instinctively and unconsciously, often seen in the more experienced practitioner who can monitor and adapt their practice simultaneously. Reflecting-on-action involves thought process about action after it has occurred, often seen in novice practitioners who need to step back and think about the situation everyplace in their minds. (Finaly 2004)Another style of reflection is Gibbs reflective cycle. It has characteristics of all other strategies/ frameworks for reflection that stick been developed. However, Gibbs cycle stops at the stage of action and therefore does not generate a way to close the cycle or move to reflective practice in terms of taking action (Jasper 2003). This is beca persona Gibbs framework had its foundations from an education condition as opposed to a practice oneDescription(what happened)Acti on plan Feelings(if it arose a profits (what were you what would you do) thinking and feeling)Reflective cycleConclusion Evaluation(What else could (what was favorable you wear done) bad)Description(what do you make of the situation)Gibbs reflective cycle (1988, cited in Jasper 2003 p77)Chris Johns model of structured reflection was developed in the 1990s. It has gone finished many changes and the 1994 version is the easiest to use when beginning reflective practice. Johns says that the modelconsists of a series of questions which aim to tune the practitioner into her experiences in a structured and meaningful way. It emerged as a natural sequence through which practitioners explored their experience in supervision (Jasper 2003 p84).The focus of Johns model is about do us aware of the knowledge that we use in practice. This is taken as a core question, which is explored through five cue questions, that are further divided into detailed questions description of the experience, r eflection, influencing factors, could I have dealt with the situation better and learning (Jasper 2003 p85). The framework is presented in app devastationix one.Many people have defined reflection, Johns (2009 p3) defined reflection asLearning through our everyday experiences towards realising ones vision of desirable practice as a lived reality. It is a critical and reflexive process of self-inquiry and transformation of being and becoming the practitioner you longing to be.Furthermore, Boud et al (2005a p18) suggested that reflection is a form of response of the learner to experience. Where experience is the response of a person to a situation or event e.g. feelings, thoughts, actions and finishes at the time or immediately thereafter. The situation or event could be a course or an unplanned reason in daily life. It could be influenced by something external or an internal or evolve from discomfort.Reid (1993 p305) proposes that reflection is a process of reviewing an experience o f practice in order to describe, analyse, evaluate and so inform learning about practiceThere are many positive uses to reflecting on practice. Johns (2009 p15) suggests that the positive uses of reflection encourages the expression, acceptance and understanding of feelings .He suggests that feelings of negativity can be looked into and toured into positive ones in order to understand future situations and learn new ways of responding. Furthermore he suggests that reflection is empowering, which in the end will lead to desirable practice.Boud et al (2005b p11) suggested that In the skid of reflecting on learning, firstly only learners themselves can learn and only they can reflect on their own experiences. Boud et al suggest that teachers can support reflection, but only have access to thoughts and feelings by what individuals decide to reveal about themselves. Therefore the learner is in total control.Secondly, reflection is a purposeful activity directed toward a goal and lastly the reflective process where both feelings and thoughts are interlink and interactive. Negative feelings, can form major barriers toward learning. Positive feelings and emotions can improve the learning process, keeping the learner on the task and providing a stimulus for new learning. (Boud et al 2005b p11)Reflection can be used to support occupational therapy (O.T) principles and values, continuous professed(prenominal) development (C.P.D), good, legal and commerceal codes of conducts/standards of practice and it has suggested to be a core process competent, essential to O.T practice (Bossers et al 1999 p116).The College of Occupational Therapist incorporate the benefits of reflective practice in their learning strategies (McClure 2004). Reflection aids professional practice and the importance of this ensures high standards of care and is shown in documents such as A Vision for the Future (Department of Health 1993).This is alike shown in the Professional Standards of manag e (2007) which states that O.Ts should exercise high standards of competence of knowledge, skills and behaviour (standard 4 professional development and lifelong learning and standard 1 service quality and governance)Ethically, lifelong learning and professional competence (standard 5.4 and 5.1) state that O.Ts shall continuously maintain high standards of knowledge, skills and behaviour and be responsible for maintaining and developing their personal and professional competence. (College of Occupational Therapists 2005).Reflection is also an important part of continuous professional development(Fish Twinn 1997, cited in Martin Wheatley 2008) and is now a requirement for registration to practice, as is evidence based practice which is an ethical and professional imperative (Duncan 2006 p8).The O.T Codes of Ethics states that O.Ts shall be responsible for maintaining evidence of their continuing professional development (College of Occupational Therapists Code of Ethics and Prof essional Conduct 2005, 5.3) therefore, this can be done through reflection. New learning and continuous professional development depend on how skilfully you can reflect on your and others practice, to gain new insights, see new relationships, make new discoveries and make explicit the new learning that occurs (Aslop 2004 p114). Any new knowledge learnt from the experience will be saved for future reference for when similar situations arise. (Aslop 2004 p115)To demonstrate reflective practice, In the following reflective account, I am going to use Johns model of reflective structure (1994) mixed with Gibbs reflective cycle (1988) and will be reflecting-on-action (Schon 1983). I feel both are extremely valuable models and inspection and repair to express contrary ideas/feelings in different ways at different points. Other models I could have used are Goodmans levels of reflection (1984), Bortons development framework (1970) and Fish et al strands of reflection (1991).A mix of both G ibbs reflective cycle with Johns model of structured reflection, will combine theoretical reflection and practice environment. Johns model is helpful in having cue questions. It provides personal awareness of ourselves, our knowledge and actions .It asks what you could do rather than what you will do (Jasper 2003 p98). Gibbs reflective cycle provides a good framework for the reflective process e.g. learning by reflecting on an event and usually off from the scene of practice. It encourages a good description of the situation, looks at feelings and the experience, concludes where other options are considered and if the situation arose again, what you would do other than.The following narrative describes a critical hap that had a significant effect on me which made me stop and think and raised questions. This incident was the role of occupational therapists (O.Ts) within social care and the impact of this upon a service users journey. The names within this narrative have been change d to protect the innocent.The role of O.T and complaisant worker have been combined within social care producing the cognomen Self Directed Support Practitioners (SDS practitioners)Occupational therapy as a new profession is facing new challenges from the introduction of the Health Professions Council. The council want greater integration of health and social care provision and the College of Occupational Therapists is preparing for these changes by seeking to refocus the organisations of the work of the O.Ts by its strategic document from interface to integration (Dimond 2004 P397). Hence the role of an S.D.S practitioner.Brian was a 60 year old man, who lived in a bungalow on his own with no outside help e.g. care packages or adaptations. His female child visited him on regular occasions to take him shopping, to appointments and check on his health. Brian was admitted to infirmary due to a fall last year whilst using the toilet. The nearby hospital released him about 2 month s ago after he spent a few nights there. His daughter reported that Brian was still having problems with self-care, cooking and general mobility.An S.D.S practitioner and myself carried out a home visit on Brian. We received a referral from Brians daughter regarding his health and ability to perform activities of daily living (ADLs). Upon ratement of Brian, we found that he used the sink (which seemed to be coming off the wall) to aid standing from the toilet. His mobility was generally good but had difficulties raising and lowing himself in and out of the toilet and rising his legs over the lip. He had slight problems in the kitchen due to mild arthritis when go-ahead cans and jars, lifting heavy equipment and gripping cutlery. Brians mood and motivation was very low and he seemed angry at life in general. His daughter said she could not distribute with looking after Brian anymore and needed help with this. She also seemed very low in mood and appeared stressed.When we assessed Brian, I was unsure and slightly confused how to assess in an S.D.S way. I was thinking about my O.T values and beliefs and how I could incorporate these within the assessment. This would involve me assessing in a holistic way, promoting independence, empowering and motivating him as healthy as using activity as a therapeutic tool. I was unsure how to implement social work values as they seemed to clash with my own, for voice I found it difficult to establish when it would be appropriate to provide care packages. This made me feel extremely confused and concerned that I was not providing the best service for Brian when carrying out the assessment and going against my professional ethics of respecting autonomy (decision-making of service user), beneficence (benefits of treatment against risks and cost), non maleficence (do no harm) and justice (distributing benefits, risks and be fairly) (Butler Creek 2008)Overall I was trying to achieve independence for Brian with the least amo unt of equipment and help necessary. When assessing Brian in the bathroom, whilst he was sitting on a bath board and using a grab rail, he managed to lift his legs over the side of the bath and had good sitting balance. His toilet transfers needed support, so we offered a toilet frame to aid this. When assessing his kitchen abilities, Brian struggled to lift heavy pots and pans and filling the kettle. He also had difficulty gripping cutlery and standing for periods of time when preparing food. The S.D.S practitioner suggested meals on wheels to overcome the problems Brian faced in the kitchen.Throughout the assessment Brian was not very happy and laughed at his capabilities. He became very angry when we suggested that he used the equipment provided and he mentioned that he wanted a wet room and why could he not have one of these, as his friends had one fitted not that long ago. We explained sensitively that funding would not allow this and he was very capable of transferring safely with the equipment in place. This made me think about funding and O.Ts values and beliefs, which in turn made me feel unhappy as Brian could not have something he wanted and personally I can understand how comforting and aesthetically gentle this would be. However installing a wet room could reduce Brains mobility, as he would no longer need to lift legs over the edge of the bath, maintain unsupported sitting balance and therefore would lose those skill. Therefore this idea would go against my O.T and personal beliefs. as well due to funding he was not eligible for such a major adaptation.The outcome of the event was not very good. Brian refused equipment and care packages and became angry. That made me feel sad as I wanted to help Brian, to live an independent life as possible and reduce the dependence upon his daughter. Due to Brian declining the equipment, we had to record and have him sign that he understood the risks of this.Looking back at the event, I feel maybe I could ha ve convinced Brian further to accept the equipment and care packages suggested. Although the care packages conflicted with my O.T and personal values, as they take away independence, skills and the use of activity as a therapeutic tool I can see a place for these with extremely impaired individuals. In Brians case I would have suggested adapting equipment within the kitchen, such as grips for cutlery, automatic tin openers, a kettle tipper and a perching stool.The emotions I went through during this experience were anxiety, excitement, and strangeness during the start of the event, followed by sadness toward the end. The most important emotion for me was sadness. I feel that I can learn and grow from this, to tackle the situation differently next time.To evaluate, the good aspects of the experience was the enormous opportunities for continuous professional development as the role of O.T continues to grow. I also feel my understanding of O.T, social work, clinical reasoning and inter -personal/professional skills have been developed. I also feel more confident if I were ever to be in this situation again to agitate and air my values and beliefs.However, I feel that the role of an S.D.S practitioner causes confusion, loss of role identity and crossing over of professional boundaries. The S.D.S practitioners themselves were not happy with this title and their role which caused problems within multidisciplinary teams.Although I feel not a lot went well, I believe if I had been more confident to contribute my O.T knowledge it would have aided the situation. The S.D.S. practitioner that I was with managed to balance out the professions well, but I feel provision of adapted equipment should have been encouraged. Her style of reasoning was perhaps due to little knowledge of O.T and herself coming from a social work background.I am now more prepared for the role of an S.D.S. practitioner. If carried out again I would definitely gain more insight into the values and bel iefs of social workers and be more vocal about my O.T ones. I would have tried to encourage Brian to take the equipment and explained more as to why this was important. Perhaps reasoning with him that it was important for him not to lose his existing skills i.e. use it or lose it.I have learnt that theory personal, professional standards, values and beliefs, ethics and legal issues often influence practice. I have learnt the importance of reflecting in order to develop myself professionally and personally. My needs in order to develop my professional practice at this stage of my career are huge. I mainly need to develop my knowledge, communication skills, professional skills and clinically reasoning skills. I have also learnt the role which I play within a team and according to Belbins team roles (2010), I am a monitor-evaluator mixed with team worker. This means I try to see all the options and judge accurately, working co-operatively sensitively and diplomatically (Belbin 2010).In general, looking back over the situation, the role of an S.D.S practitioner promotes big ethical issues. In the code of ethics It states that O.Ts can only provided services in which they have been taught to do so (5.1) and that O.Ts shall fleck the need for multi-professional collaboration but not accept work that is deemed to be outside the scope of O.T. (5.3) (College of Occupational Therapists Code of Ethics and Professional Conduct 2005). Also ethically, are you doing good, doing no harm, promoting autonomy and justice (Butler Creek 2008) by working in such a manner? Am I affecting the service users human rights on freedom of thought, expression or conscience? (article 9 10) (Butler Creek 2008).Other issues that are concerned with S.D.S practitioner work is when working in such a way there is no team liability (every professional is accountable for their own actions and cannot blame the team for negligence which has lead to harm), no defence of inexperience (the patient is entitled to the reasonable standard of care whoever provides the treatment), determination of competence (carried out by competent colleagues or external assessors), refusal to undertake activities outside scope of competence (no O.T should undertake activities which are outside the scope of her professional practice) (Dimond 2004 P112).To conclude, reflection can identify learning needs, and new learning opportunities. It can illustrate ways in which we learn best, differently and new courses of action toward an event. Reflection can help solve problems supporting personal and professional development and offers an escape from general practice. Reflection shows us the cost of our actions, reveals our competences to others and achievements to ourselves. From observations, reflection lets us build on our theory, helping us to make decisions or resolve precariousness and empower or release ourselves as individuals (Jasper 2003).However, reflective practice has been criticised for its lack of definition, modes of implementation and its unproven benefit (Mackintosh 1998 cited in Johns 2009 p22). Platzer et al (2000, cited in Johns 2009 p22) noted that students may be opposed to to reflection that would involve talking about themselves. This was also highlighted by Cotton (2001 cited in Johns 2009 p22) who suggests that reflection becomes a type of surveillance, assessment and control. addendum OneJohns Model of Structured Reflection. Core question what information do I need in order to learn through this experience? inspire questions (Jasper 2003)1. Description of experiencePhenomenonCasualContextClarifying2. ReflectionWhat am I trying to attainWhy did I get involved as I didWhat were the cost of my actions for myself, family, patient, colleaguesFeelings about experiencesPatients feelingsHow do I know how the patient felt3. Influencing factorsInternal influences on decision-makingExternal influences on decision-makingWhat knowledge influenced decision making4 . How differently could I have dealt with the situationChoices availableConsequences of choices5. learningFeeling about experiencesThe sense made of this experiences thinking of past and future practiceHow experience changed my ways of knowing empirics, aesthetics, ethics and personal
Tuesday, June 4, 2019
Impact of Foreign Bank Entry on Host Country
Impact of Foreign Bank Entry on Host CountryLiterature ReviewIn more countries, the opening of remote banks has been increased on a mellow scale during the 1990s especially in the countries which argon less developed. Due to fiscal linearization policies, the entry of orthogonal banks trading operations increased during the early 1990s which in turn allowed orthogonal banks to set up their branches in soldiery arena and performing their operations (Claessens, et al. 2001).This rapid yield has led to legion(predicate) questions that are being raised for their presence in the internal banking markets. The ternary major consequences which led to their tremendous growth are competition which go forth be affected by their presence, the efficiency of house servant banks and the less proof that we be in possession of about this consequences (Liebscher, et al. 2006). The only broad story was based on Claessens, et al. (2001) analysis which focused on the efficiency and comp etition effects of unconnected banks entry. This study had various variables which measured income, profits and costs of domestic banks reflecting changes in any(prenominal)(prenominal) competition and efficiency of domestic banking markets. It was a turn-around i.e. a negative relationship between the presence of extraneous banks and factors like profitability, non- elicit income and extra curricular income of the domestic banking markets. The size of the banks in terms of market share was supported by Claessens, et al. (2001) study referable to only presence of irrelevant banks due to three factors. First, it led more demands for domestic banks to give up their profits and huge income. Secondly, it forces domestic banks to prove them to be more efficient which in turn will reduce costs. And finally, domestic banks will try to portrait few of the banking techniques and practices which will reduce costs.Though many a(prenominal) emerging countries fear about letting unknown b anks enter their host estate, the liberalization of banking policies have made it clear that in an open market, they can face challenges about the entrants of foreign banks in the host country and their efficient working styles (Liebscher, et al. 2006). The entry of foreign banks will lead to two major effects. One, the domestic banks will be in the bad loans section due to attractive power of foreign banks and good practices which they follow. Two, the local banks can benefit from their better technologies that they use for learning. Though there will be competition have by both the domestic and foreign banks, one thing is for sure that domestic monetary market will gain by lowering the interest rates for taking a loan (Mathieson, Schinasi and International Monetary Fund 2000). The authors Caprio and Honohan (2002) has discussed in more details about the factors which led to increase role of foreign banks in emerging markets. They said that the increase in ownership of foreign banks in emerging markets is one of the faces of the ongoing consolidation of banking system in both developed and emerging markets. The globalization of financial services industry, banks are facing more competition from non-bankers for credit and financial services, particularly security markets, which has put wide pressures on the interests rate margins and profits, which in turn has led to a change in the franchise value of banks (Folkerts-Landau and Chadha 1999). In the recent decades, banking has wrick information, communication and computer science intensive industry. There is a decline seen in both domestic and across border to handle these activities (Mathieson, Schinasi and International Monetary Fund 2000).In many less developed countries, there is an inefficiency which is seen in domestic banks and there is a lack of competition among lenders in high borrowing costs and there is a limited financial access for many firms. The entry of foreign banks may increase the sup ply of credit and improve efficiency, by increasing the competition. However many banking theories have found an asymmetric relationship which demonstrates reducing access to credit for some firms by greater competition (Petersen and Rajan 1995). There is a huge essence of money involved in finding information about local firms which may limit foreign banks to cream-skimming, where they lend only to that firms who are more bankable and which adversely affect both domestic banks and firms that rely on them (Gormley 2007). The general liberalization of banking policy, many emerging markets have been reducing barriers to trade in the financial service since the early 1990s. There have been many significant changes in the restrictions of entry of foreign banks which have been motivated for improving the level of competition and efficiency in the banking sector. Mainly they have been triggered just to reduce the cost of restructuring and recapitalization which in turn is building an in stitutional structure in the banking sector which is healthier to incoming domestic and external shocks (Mathieson, Schinasi and International Monetary Fund 2000).Effects of foreign bank entryThere are many effects which have granted a sharp rise in the level pf participation of foreign banks entering a host country. The hosts country in which the foreign banks enter have a clear attest that by entering into emerging markets, there will be an overall positive effect in the banking system in terms of its efficiency and stability of the system. Allowing foreign banks to enter is typically viewed as having the most beneficial effects when such entry occurs in the context of a more general liberalization of trade and production of financial services. It has been argued that general liberalization of trade in financial services induces countries to produce and exchange financial services. This in turn allows the domestic banks to inherit few of its services that are helpful in nature. This would be especially true for foreign branches of international banks since they are supervised on a consolidated basis. For example, the local subsidiary of international banks is an entity on its own Caprio and Honohan (2002). Failure of that will be in turn monitored by the parent bank. The new products and services provided by the foreign banks will give an idea for the domestic banks to follow the same to be more efficient by upgrading the quality and size of its lag. The branches and subsidiaries of major international banks have good practice of disclosure, accounting and reporting requirements that are closely aligned with international best practices. To infuse this into the domestic bank market, the overall quality of the information about the state of the banking system will be improved on a high scale. Also, when crisis arise, foreign banks help the domestic residents to do their capital flight at home, thus, adding stability to the system. On the other hand, many argue that the entry of foreign banks in host country can worsen the banking system. If the domestic banks have weak capital and are inefficient in nature, for example, they may respond opposite to increase foreign entry by undertaking high risks activities in an attempt to earn good returns. It has been seen during the early period of liberalization that foreign banks tend to attract or take less risky customers i.e. cherry-pick the most creditworthy domestic markets and customers, leaving behind more risky customers for the domestic market to serve. This happened during the liberalization period which contain loans with fixed interest rates and had to compete with other financial firms that were lending it on higher rates and offer high deposit interests rates. During this period, many single out institutions got worse few of them undertook high returns with high risk activities (Mathieson, Schinasi and International Monetary Fund 2000). Apart from the impact of foreign bank en try upon the stability of domestic banks, there have been also concerns about the behavior of foreign banks. During the crisis period, it was noted that foreign banks were involved in lending money to cross border financial firms than to lend it to domestic firms who were badly affected. In this way, the behavior turned out to be opposite thus violating the international practice that was followed. Finally, the issue concerning the supervision of foreign banks is of great concern. The entry of foreign banks is a means of importing supervision for at least a portion of the banking system, simultaneously improving the quality of staff and practices of domestic supervising. They site the examples of Banks of Credit and Commerce International which has fallen between the cracks that complex cross-border financial transaction undertaken by international banks may be knockout to supervise by either the host or home country supervisors (Mathieson, Schinasi and International Monetary Fund 2000).Despite worries that foreign firms could destabilize domestic finance, some countries have remained low on admitting the fact that foreign owned financial firms could destabilize the local financial system, thus, putting them out of business. It was seen that the prosperity of foreign banks in the host country tends to be correlated with that of the countries in which it operates it would rather show a long-term commitment to the host countries. There is very little evidence to support these fears, despite the growing presence of foreign owned financial intermediaries, by improving the overall operating efficiency, thus, gaining improvements in both official and close elements on the financial infrastructure and long term growth (Levine, Loayza and Beck 2000).Foreign banks become more than niche player in financial sectors. In high income and upper middle income countries, they represent more that one in five of the banks which usually account for much less than 10 percent of local banking assets. Thus, they become niche player in catering international trade business and foreign companies. Even before the expansion takes place in the host country, foreign owned financial firms have a huge share in poorer countries. Even if they have high operating costs, foreign owned banks are more profitable than local banks which imitate their investment in good quality services. They also have high interest margins and high tax payments. The smaller the country the more likely is to reply on foreign owned banks. But few big countries like India and Indonesia have good amount of share of these foreign owned banks Caprio and Honohan (2002).
Monday, June 3, 2019
Performance Of Wells Turbine Engineering Essay
Performance Of swell Turbine Engineering EssayABSTRACTA rise up turbine has inherent disadvantages in comparison with conventional turbines relative low faculty and poor starting characteristics. In this case, the performance of wells turbine is studied on computational analysis by changing aerofoils and providing antithetic be given of relative incidence for the improvement of the turbines performance.Study is establish on analysing the lean of air on turbine victimization computational analysis at steady condition.1 INTRODUCTIONThe Ozone depletion and global warming have altered the international community and urged the need for more focus on alternative unripe showtimes of energy. Ocean wave energy is one of the renewable forms of energy which back end be utilized in response to the disturbing prospect of an exhaustible source of energy. Several wave energy devices being studied under many wave energy programs make employ of the principle of the oscillating water mains tay (OWC).Potentially the most successful device used in harnessing on wave energy has been the OWC wave energy converter. The OWC chamber, either floating or bottom standing, with the immersed devastation opened to the action of the sea. A reciprocating air precipitate is created by the action of the free surface of the water within the chamber. The conversion of this airflow into mechanical energy may be achieved by a egress of devices like-A. TAPCHAN The TAPCHAN comprises a gradually narrowing channel with wall heights typically 3 to 5 m above mean water take. The waves enter the wide end of the channel and, as they propagate down the narrowing channel, the wave height is amplified until the wave crests expire over the walls to a reservoir which provides a s shelve water supply to a conventional low head turbine. The requirements of low tidal range and come acrossting shoreline limit the world-wide installation of this device. public figure (a) TAPERED CHANNEL1 (TAPCHAN)h ttp//re.emsd.gov.hk/english/other/marine/images/marine_tech_010_2.gifB. PENDULOR The PENDULOR device consists of a rectangular box, which is open to the sea at one end. A pendulum flap is hinged over this opening, so that the action of the waves pay offs it to swing back and forth. This motion is then used to force out a hydraulic pump and generator.http//t2.gstatic.com/images?q=tbnANd9GcQ7yge9ouptnhszDgsXGA_gCvAXKqbo78BeXZHFFtPB89433p0pFig (b) PEDULOR 2C. come up TURBINE The come up turbine is one of the most suitable air turbines for energy conversion from oscillating air flow. . A schematic view of the OWC device with a Wells turbine is shown in Fig. c. The Wells turbine is an axial flow air turbine. It consists of several symmetrical aerofoil blades set around a hub. As waves Impinge on the device, they cause the water column to rise and fall in the air chamber, which alternately compresses and depressurized the trapped air. This air is allowed to flow to and from the atmos phere by a turbine which drives an electric generator.http//www.aussiestockforums.com/forums/attachment.php?attachmentid=9213stc=1d=1180172232Fig (c) WELLS TURBINE3Fig. 1.1 ceremonious of the Three Major shoreline DevicesThe Wells turbine is a self-rectifying air turbine which is expected to be widely used in wave energy devices with the OWC (Raghunathan, 1995) .It can extract power at low airflow rate, when other turbines would be inefficient. The Wells turbines for wave power conversion have less aptitude. To increase the expertness is the major quest all over the world, the flow of air through the wells turbine impeller is carried out in this reckon by using distinct size of it impeller and introducing biplane i.e. two rows of symmetrical aerofoil blades.1.1 WAVE RESOURCEShttp//www.oceanenergy.ie/images/world-map.jpgFig. 1.2 Global Distri entirelyion of Deep Water Wave power levels in kW/m crest length4 scorn the climate change phenomena, the world imagery for wave remain s very much as shown in fig. 1.2 by Dr Tom Thorpe 5. The full(prenominal)est energy waves ar strong off the western coasts in the 40o-60o latitude range north and south. The power in the wave fronts varies in these atomic number 18as between 30 and 70kW/m with peaks to 100kW/m in the Atlantic SW of Ireland, the Southern Ocean and off Cape Horn. The capability to supply electricity from this resource is such that, if harnessed appropriately, 10% of the current level of world supply could be provided 4PERIODAMPLITUDEPOWER DENSITYVELOCITY (m/s)WAVELENGTH( sulfur)(m)(kW/m)(m)Storm1414170023320Average93.56015150Calm5.50.51950Fig 1.3 Tthe nautral and technical wave energy resource for the north and west side of the UK6The techinical resource is dependent on the nautral conditions like the shape of the rock and location i.e beaches and gullies. The wave energy at calm sea is considered in this project.1.2 WELLS TURBINEThe monoplane Wells turbine i.e. the basal Wells turbine consists o f several symmetrical aerofoil blades (NACA four digit series) set around a hub at 90 details with respect to the airflow. Since its an invention by Prof. A.A. Wells in 1976, most researchers have focused on improving its efficiency and its range of efficient operation. In fact, compared to other conventional air turbines (e.g. Francis turbine) the Wells turbine has a lower efficiency and a narrow operational region. Nevertheless, it can extract power at low airflow rate, when other turbines would be inefficient.Fig. 1.4 Schematic of the Monoplane Wells Turbine7A schematic diagram of a Wells turbine is shown in Fig. 1.4. At first sight the arrangement might seem to be unlikely elbow room of energy conversion. However, once the blades have attained design speed the turbine is capable of producing a time-averaged positive power output from the cyclically reversing airflow with a fairly high efficiency. Wells turbine has low efficiency and poor starting characteristics.The Biplane We lls turbineMuhammad Mamun in the Study on the Hysteretic Characteristics of the Wells Turbine in a Deep Stall specification says the pressure drop across a mono-plane Wells turbine above is proportional to the straightforwardly of the tip speed which has to be limited if transonic effects are to avoided. For wave energy devices which call forth significantly larger pressure drops than the limit for a single plane turbine a biplane turbine can be usedFig. 1.5 Schematic of the Biplane Wells 7It has certain advantages over the conventional monoplane Wells turbine as followsI. It can operate under high loading.II. It can absorb higher wave power than the monoplane turbine if the diameter and rotational speed of the turbine are kept constant.III. The design speed is lower than that of the monoplane for the same loading.IV. It avoids the use of guide vanes and therefore the turbine would require less support and repairs. 71.3 PRINCIPLE OF OPERATIONThe principle of operation of Wells t urbine is based on the classical aerofoil theory. According to the classical aerofoil theory, an aerofoil which is set at an tap of incidence in a fluid flow generates a lift force L normal to the free stream. The aerofoil also experiences a drag force D in the statement of the free stream (relative velocity). These lift and drag forces can be resolved into tangential (in the plane of rotation) and axial (normal to the plane of rotation) components FT and FA respectively.Fig. 1.6 Notation for determining lift, drag, and axial and tangential forces onAn aerofoil7Resulting expression for axial and tangential forcesFA = Lcos + DsinFT = Lsin DcosThe axial force is absorbed but the turbine while the tangential force causes the turbine to revolve. For a symmetrical airfoil the direction of tangential force is the same for both positive and negative values of . Therefore, the direction of rotation of the rotor coil is independent of airflow direction.2 AIMS AND OBJECTIVES OF THE PROJE CTSimulation of air flow through wells turbine impeller by means of numerical rule using a CFD (Computational fluid dynamics) called unstable and check the flow process of different parameters and the factors affecting the differences. Since wells turbine is a low efficiency turbine to increase the efficiency of Wells turbine is the other aim. Path followed to meet the requirements is first calculation of efficiency theoretically. Simulating a modified design by using different angle of incidence and making biplane i.e. two rows. Comparing the results of different model and selecting the suitable design.3 LITERATURE REVIEW3.1 Types of CFD PROCESS USEDCommercial CFD code FLUENT, Star-CD, FLOW-3D, CFX/AEA, and so on interrogation CFD code Self-developedPublic domain software (PHI3D, HYDRO, and WinpipeD, etc.)Other CFD software includes the Grid extension software (e.g. Gridgen, Gambit) and flow visualization software (e.g. Tecplot, FieldView)Commercial CFD code FLUENT is used in t his project.3.2 General working on CFDTable3.1 CFD working layoutThe Processes shown in the table 3.1 is divide into pre- process and post- process viz. GAMBIET AND FLUENTGeneral grade of GAMBIT operationsInitial setupSolver selection, profit size, Defaults, etc.Geometry creation (ACIS, IGES or Mesh import)Create full geometryDecompose into take-able sectionsMeshing local anaesthetic web Edge and Boundary layersGlobal meshing Face and/or VolumeMesh examinationZone assignmentContinuum and Boundary attachmentMesh exportGeneral sequence of FLUENT operationsSelection of appropriate models.Turbulence, combustion, multiphase, etc.Define material propertiesFluidSolidMixturePrescribe operating(a) conditionsPrescribe boundary conditions at all boundaru zonesProvide and initial solutionSet up solver controlsSet up convergence monitors3.3 Grid generationGrid generation is one of the key elements in Computational Fluid Dynamics (CFC). It has now become a fairly common tool for use in the n umerical solution of partial differential equations on arbitrarily shaped regions. The numerical solution of partial differential equations requires some discretization of the field into a collection of points (nodes) or elemental volumes (cells). The differential equations are approximated by a set of algebraic equations on this collection, and this system of algebraic equations is thensolved to produce a set of discrete values which approximates the solution of the partial differential system over the field. The practice of discretizing the physical domain into a finite number of elements is called as grid generation.3.4 Grid topologiesGenerally, the governing equations may be transformed into finite element, finite difference, or finite volume equations. The cell types supported by FLUENT are followed as triangular and quadrilateral cells in 2D are accepted, and in 3D, tetrahedral, hexahedral, wedge, and pyramid cells can be usedFIG3.2 Different types of grids organise versus Un incorporate GridsThe section presents a brief description of grid generation. The grid generation techniques available at present fall into two categories, namely a) organize grid generation and b) unstructured grid generation. The structured grid generation techniques are based on the transformation of the complex physical domain into a simple computational domain, which is often chosen to be rectangular in shape (quadrilateral and hexahedron).The unstructured grid generations have been used with FEM (finite element method) procedure only, whereas structured grids have general applicability.7.3.5 Types of structured gridIn FLUENT, both single-block and multi-block structured meshes are acceptable, as well as hybrid meshes containing quadrilateral and triangular or hexahedral, tetrahedral, pyramid, and wedge cellsMultiple BlockSometimes, it is possible to combine several structured computational meshes together to fit the physical domain. Multi- locking has the advantage of the spe ed of a structured solver, without as many mapping constraints apparent in single block meshes.Single BlockIn this technique, one computational grid is mapped to fit the whole physical domain. For even moderately complex shapes, it may be practically impossible to define a transformation which will map the outer(prenominal) surface of the computational domain to the required physical shape, while ensuring that the resulting grid has desirable attributes of smoothness.73.6 Mesh qualityThe quality of mesh plays a significant section in the accuracy and stability of the numerical simulations. The attributes associated with mesh quality are density of node, cell shape, smoothness and flow-field dependency. In many cases, poor resolution in critical regions can dramatically alter the flow characteristics.3.7 The Capabilities of FLUENTThis section provides a brief introduction to FLUENT and an explanation of its capabilities 10.FLUENT used in this project is a commercial code and a stat e-of-the-art computer program for manikin single and multiphase flows, agitate and mass transfer, chemical reaction phenomena, and etc. in complex geometries. This code includes following components FLUENT, the flow solver GAMBIT, the pre-processor for geometry modelling and mesh generation pre-PD, and etc. FLUENT solver utilizes a finite-volume, pressure-based, multiphase infinite marching method (SIMPLE algorithm), for solving the governing integral equations for conservation of mass and momentum, and for energy and other scalars such as turbulence and chemical species. It has the following modelling capabilities Flows in 2D or 3D geometries using triangular/tetrahedral, quadrilateral/hexahedral, or mixed (hybrid) grids that include prisms (wedges) or pyramids In compressible or compressible flows Steady-state or transient analysis Laminar and turbulent flows Newtonian or non-Newtonian flow Convective heat transfer, including natural or forced convection Coupled conduction/con vective heat transfer Radiation heat transfer Inertial (stationary) or non-inertial (rotating) reference frame models Multiple moving reference frames, including sliding mesh interfaces and mixing planes for rotor/stator interaction modelling Chemical species mixing and reaction, including combustion sub models and surface deposition reaction models Arbitrary volumetric sources of heat, mass, momentum, turbulence, and chemical species Flow through porous media One- symmetryal fan/heat-exchanger performance models Two-phase flows, including cavitations Free-surface flows with complex surface shapesFLUENT can provides a number of boundary conditions, including Velocity or Pressure set Inlets/ subjects Stationary or Moving Walls, with or without Friction Periodic Boundary Conditions Symmetry Boundary Conditions Pressure Far-filed Boundary Conditions Outflow Boundary Conditions Inlet/Outlet Vent Boundary Conditions Intake/Exhaust Fan Boundary ConditionsAs the Well turbine has a complex geometry for modelling, a large number of modelling capabilities are required of the CFD code for the turbine. FLUENT can incorporates all of these capabilities, and is most suitable for modelling the Wells turbine.104 ANALYSIS OF TASK4.1 Theoretical calculationThe dimension used in this project is of prototype obtained from others experimental work, the model is designed and simulated by using the two different models shown in the table below.a 8 b9Table 4.1 Dimension of wells turbineThe theoretical calculation of efficiency is done using the above two different dimension, the method used to calculate the efficiency is shown below.CALCULATION FOR EFFICIENCYSimilarly,CALCULATION AT 4 peak ANGLE OF ATTACKAt = 4 degreeThe table below shows a work out efficiency at different angle of onrush calculated using the format shown above.(degree)(radians)W(relative velocity)(rads/sec)ReClCd4.000.07143.3642.451221641.450.400.0121.865.000.09114.7442.39977760.010.500.0123.816.000.1095.6742.32 815255.460.600.0125.187.000.1282.0642.24699252.150.700.0126.028.000.1471.8542.14612312.290.800.0126.449.000.1663.9242.03544748.240.900.0126.7310.000.1757.5941.91490747.451.000.0126.7811.000.1952.4141.77446611.021.100.0126.9612.000.2148.1041.62409873.061.200.0226.9713.000.2344.4541.46378826.411.300.0226.8914.000.2441.3441.29352251.701.400.0226.9015.000.2638.6441.10329254.751.300.0223.38Table 4.2 Efficiency at different angleUsing the values of efficiency and the angle of glide path from the above table (4.2) a direct relation between efficiency and the angle of attack is obtained which can be seen in the graph below (fig 4.3). Usig a Trendline option in Microsoft Excel an equation of direct relation between angle of attack and efficiency is obtained. The equation shown in the graph is a sixth order equation which is difficult to differentiate to obtained the angle at which the efficiency will be maximal,so a 2nd order equation is obtained from trendline option. Differentiating the equation gives the value of an angle at which the efficiency is max. From this procedure 12 degree is the calculated angle obtained at which the efficiency is max.Fig 4.3 Efficiency Vs. Angle of Attacky = -0.00026 + 0.00785 0.10484 + 0.70883 2.70462 + 6.5617x + 17.369when x = 12y = = 25.98 %After substituting the value on angle obtained for maximum efficiency a difference between the two values is found and it is due to the R squared value. More closer the value of R square to unity more accurate results can be obtained.Equations obtained from Microsoft Excel at different orders are shown below- distinguish 2y = -0.12842 + 1.8889x + 20.336R = 0.8797Order 3y = -0.00383 0.05482 + 1.4909x + 20.851R = 0.8848Order 4y = -0.00524 + 0.13263 1.22762 + 5.2125x + 17.578R = 0.9636Order 5y = -0.0015 + 0.02864 0.26813 + 0.86162 + 0.6489x + 20.649R = 0.9869Order 6y = -0.00026 + 0.00785 0.10484 + 0.70883 2.70462 + 6.5617x + 17.369R = 0.9945Similarly using the dimension in table 4.1 (b) the calculated efficiency is show below(degree)(radians)W(relative velocity)(rads/sec)ReClCd4.000.07143.3678.24916231.000.400.0153.725.000.09114.7478.13733319.930.500.0158.496.000.1095.6778.00611441.530.600.0161.877.000.1282.0677.85524439.060.700.0163.938.000.1471.8577.67459234.170.800.0164.969.000.1663.9277.47408561.140.900.0165.6810.000.1757.5977.24368060.551.000.0165.8011.000.1952.4176.99334958.231.100.0166.2412.000.2148.1076.72307404.761.200.0266.2813.000.2344.4576.42284119.781.300.0266.0714.000.2441.3476.10264188.751.400.0266.1015.000.2638.6475.76246941.041.300.0257.46TABLE 4.4 Efficiency at different anglesSimilarly in this case a graphical representation of Angle of Attack Vs. Efficiency is obtained which can be seen below and the equation represents a direct relation between efficiency and angle of attack.Fig 4.5 Efficiency Vs. Angle of AttackOrder 6y = -0.00066 + 0.02925 0.62024 + 6.85633 42.0712 + 139.39x 138.43R = 0.9945when x =12y = = 64.24%Similarly using the order 2 equation to find the angle at which the efficiency will be maximum. The calculate angle using the same procedure as above is 12 degree at which the efficiency is maximum.. 4.2 Gambiet (Pre Processing)-The figure below shows an impeller of wells turbine designed with blades at 0 degree angle of incidence and using the dimension from the table 4.1 (a).Fig 4.6 Impeller of wells turbineCreating a model using gambiet and then meshing the geometry for which meshing size is selected based on the Reynolds number. Since the Reynolds number lies in the transational flow at the angle in which the efficiency is maximum,using turbulence boundary layer formula =0.00269The thicknes of boundary layer is 0.003 m. The mesh size comes to be 0.001m to get three elements in one layer to get fine meshing. In case of 3-Dimensional model the mesh elemet used is Tet/Hybrid. Checking the meshing quality the Aspect Ratio lies between 1 to 4. Boundary conditions is given for impeller is moving wall and interfa ces is decided so that the fluid can be go around within this volume. The mesh is exported for post processing in Fluent4.3 Fluent (Post Processing)Steps used in fluent is as followsStep 1 source the case fileStep 2 Defining the grid interfacesStep 3 Grid checkStep 4 Defining model as viscous and using K-epsilon (2 equation )Step 5 Defining boundary conditionIn boundary condition fluid within the impeller is made to rotate at 40 rads/sec.The impeller is a moving wall rotating relative to cell zone at 0 rads/sec.Inlet velocity is 10 m/sec and the turbulence method selected is intensity and hydraulic cylinder.Step 6 Solution is converged after ilteraion5 RESULTS AND DISCUSSIONThe results shown below contains pressure contours, velocity vectors and pathlines at different cros-section of the models designed using the dimension from table 4.1 (a).Model with blades at 0 degree angle of incidence and time out flow from topModel with blades at 0 and 2 degree(+) angle of incidence a nd portal flow from topModel with blades at 0 and 2 degree(+) angle of incidence and inlet flow from bottomModel with blades at 2 degree(+) angle of incidence and inlet flow from topModel with blades at 2 degree(+) angle of incidence and inlet flow from bottomBiplane modelsModel with blades at 0 degree angle of incidece and inlet from topModel with blades at 0 degree angle of incidence and inlet flow from bottomModel with blades at 2(+)and 2(-) degree angle of incidence and inlet flow from topModel with blades at 2(+)and 2(-) degree angle of incidence and inlet flow from bottomModel with blades at 0 degree angle of incidence and inlet flow from topModel with blades at 0 and 2 degree(+) angle of incidence and inlet flow from topModel with blades at 0 and 2 degree(+) angle of incidence and inlet flow from bottomModel with blades at 2 degree(+) angle of incidence and inlet flow from topModel with blades at 2 degree(+) angle of incidence and inlet flow from bottomBiplane modelsModel wi th blades at 0 degree angle of incidece and inlet from topModel with blades at 0 degree angle of incidence and inlet flow from bottomModel with blades at 2(+)and 2(-) degree angle of incidence and inlet flow from topModel with blades at 2(+)and 2(-) degree angle of incidence and inlet flow from bottomComparing the above graphical results under a range of 0-400 for comparison except the last two model. The table below shows the value of dynamic pressure (max) in Pascals of above design.From the table it can be seen that the introduction of two rows provides a better result in terms of dynamic pressure. After giving the installatoin angle the maximun dynamic pressure obtained is 1176 pascals by which we can say that the two rows impeller with and an installaition angle is better than the single rows .Assumptions non-homogeneous assumptions made to carry out the simulation is as followsPATHLINES OF PARTICLES ON IMPELLERAOA 0 recess FROM assoilAOA 0 AND 2 DEGREE INLET AT TOP AOA 0 AND 2 DEGREE DEGREE INLET AT BOTTOMAOA 2 DEGREE INLET AT TOP AOA 2 DEGREE INLET AT BOTTOMTWO ROWSAOA 0 DEGREE INLET AT TOP AOA 0 DEGREE INLET AT BOTTOMAOA +2 -2 DEGREE INLET AT TOP AOA +2 -2 DEGREE INLET AT BOTTOMThe results shown below is of the dimension used from table 4.1 (b).modelling of the wells turbine is divided into two parts theoretical and practical
Sunday, June 2, 2019
Habit of mind :: essays research papers
A habit of caput is a way of opinion that one acquires over time. It is a type of thought that involves thinking beyond what society considers right or wrong, but acknowledging through complex thought, what is morally right. It is not easily achieved and is somewhat like a muscle, in that you have to build it up over time through intellectual work and hardship. Not everyone can achieve a healthy habit of mind, in fact most dont. The habit is a way of thinking that allows one to communicate with knowledge when the answer is not initially apparent. In order to think in this complex manner a person has to be well educated in all subjects of intelligence. Having a practised education goes hand in hand with having good habits of mind, because in order to have positive functioning habits, a person has to be well locomote enough to considered every possible solution to the problems or questions posed. Being able to use a habit of mind also requires a type of thinking where others nor any outside force constrains any ideas or solutions . This by definition is a habit of mind. The characteristics of a good philosopher are someone who possesses the qualities to use their habits of mind and be able to think on a higher level than most do. Though everyone has their own unique habits of mind, philosophers are trained to think at a level where their habits of mind are stronger, and thus are always looking for, and usually come up with the best solution to questions, or problems posed. Plato is an display case of a philosopher he wrote a book, The Republic, which is a novel outlining the steps in order to become a good philosopher. Plato speaks through Socrates in the book, and Socrates gets involved in many challenging debates and philosophical conversations with people along his journeys, allowing him to strengthen his habits of mind. Philosophers are posed with the challenge of attempting to solve many of lifes unanswerable questions. One example would be the quest ion as to whether abortion is right or wrong. Both sides can be argued, pro life or pro choice, and both have commensurate evidence supporting its side. Although it would make sense that the person whos fully informed on the subject and has the best ability to argue their contention testament prevail in the conclusion of the argument, a solution is not usually possible.
Saturday, June 1, 2019
Good Sports Equal Aggressive Men? Essay -- Article Review
In sporting activity participation and televised sports, there is a discernible difference between male and female interest and involvework forcet. In the article Center of Attention The Gender of Sports Media Michael A. Messner discusses the issues that involve all aspects of sports strictly being a mans affair. Messner expresses ideas that men are not only the forefront of sports participation, but sports media as well. A argue is made in the article closely the leaders in sports being those who are the most aggressive. This point is the reasoning behind why men are the superior figures in sports. The aggressiveness of men causes there to be more interest into male sporting activity which makes men a dominant figure in sports.Messner uses the idea Aggressive players reward the prize nice guys finish last (480). The athletes who show the most aggression, are more likely to be acknowledged than those viewed as being weak or soft. Aggressiveness has been associated with toughness and fleshlyity as if one balances the others. To be considered aggressive in professional sports means to not be afraid to get physical with opposing players, having a very large competitive streak, assertiveness, and being fearless. No matter how many times it is denied, men are the ones who are the most aggressive. in that respect is a natural factor that falls into the aggression of men, that there is a shortage of in women. Societal influence has the most affect on the differences of men and women. Men being superior in not only sports but all aspects of live hadnt just one day been set in stone as Messner makes it out to be. He doesnt include the reasoning necessary to explain how sports became male dominant. The article Becoming Members of society education... ...port both contend by men. Aggression doesnt always explain the large difference in male and female sporting activity. Author Micheal A. Messner does have a point that male aggression does affect the response of an audience but it is only valid for sports that involved the need to be aggressive. Still, there is clearly more agreeable aspects of male sporting events than women sports.Works CitedMessner, Michael A. Center of Attention The Gender of Sports Media. Rereading America Cultural Context for Critical Thinking and Writing. Ed. Gary Colombo. Et al. Boston, MA Bedford/St. Martins, 2004. 477-487. Print.Devor, Aaron H. Becoming Members of Society Learning the social Meanings of Gender. Rereading America Cultural Context for Critical Thinking and Writing. Ed. Gary Colombo. Et al. Boston, MA Bedford/St. Martins, 2004. 424-431. Print.
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