The Pain In Osteoarthritis Health And Social Care Essay Free Essays

Osteoarthritis is a disease of the articulations, impacting 86 % of people over 65 ( Felson, Schaible 2009 ) . Patients with the status frequently complain of hurting within the joint, this hurting frequently worsens when weight bearing. Although, in advanced signifiers of the status there can be pain on remainder excessively. We will write a custom essay sample on The Pain In Osteoarthritis Health And Social Care Essay or any similar topic only for you Order Now Other ailments include progressive stiffness of the articulations and musculus failing ( Chu, Thornhill 2001 ) . Osteoarthritis is caused by loss of the articular gristle in articulations associated with hypertrophy of the bone and thickener of the capsule ( Enohumah, Imarengiaye 2008 ) . A articulation is where two castanetss, covered in articular gristle meet ; the articulation is lubricated with synovial fluid. Figure 1 shows the anatomy of a healthy articulation. Cartilage plays an of import function in leting smooth clash free motion of the joint. If the gristle becomes damaged motion is restricted and pain develops. Bone has an first-class capacity to mend itself nevertheless in degenerative arthritis the castanetss ability to mend itself consequences in chronic hurting. This is because as tissues try to mend, re-growth occurs abnormally doing some countries of bone to go dilutant and others thicker. This means that the two castanetss no-longer fit together every bit good, doi ng motion to go progressively hard and painful. If there was greater apprehension of the mechanisms behind the development of hurting, and why some patients with similar X raies appear to hold different sums of hurting more effectual interventions could be developed. This could pro-long the clip before the patient requires. This essay will look at how hurting is transmitted through the organic structure, the anatomy of articulations and how debasement of the joint can take to trouble in degenerative arthritis to let for the development of effectual interventions. This image shows the anatomy of a articulatio genus articulation and the accessary constituents of the joint that enable the joint to execute its map of clash free comfy motion. It is these constituents that can deteriorate in degenerative arthritis and cause hurting to develop. Although the image is of a articulatio genus articulation all articulations have a similar construction. ( Image taken from Enohumah and Imarengiaye. 2010 ) Figure 1: Diagram to Show the Anatomy of a Knee Joint. Pain is termed as an unpleasant sensory and emotional experience associated with tissue harm ( Merskey, Bogduk 1994 ) and a defense mechanism mechanism associating to weave harm ( Dray, Read 2007 ) . Pain can be described as transient ; this is the direct stimulation of nociceptive centripetal neurones and the ague hurting this causes. Pain of articulations can be chronic ; uninterrupted hurting which makes mundane undertakings progressively hard to set about. Chronic hurting is of small importance as does non mean tissue harm and may go on after the tissue has repaired ( Dray, Read 2007 ) . The hurting can besides be episodic ; this is when hurting intensifies when set abouting undertakings that require increased joint motion or strength, such as mounting stepss or bending over. This hurting can do psychological hurt to the patient and diminish their quality of life as the hurting forces them to go sedentary and stray. Figure 2: The Pain Pathway in Humans This tract illustrates how hurting is transmitted from the stimulation ( in degenerative arthritis this is a joint ) to the encephalon it besides lists some of the chemicals that can be released from damaged cells that affect hurting transmittal and esthesis ( Image taken from Srivastava, 2010 ) . Pain is transmitted form articulations to the encephalon via neurones with bare nervus terminations, see Figure 2. These constructions are known as nociceptors and the functional nociceptive unit is made up of capillaries, nociceptor and mast cell. Joints are innervated by both centripetal and sympathetic nervousnesss. Nociceptors are normally less than 5AÂ µm in diameter and either Type III myelinated with unmyelinated terminations or Type IV unmyelinated. They have a high threshold of activation which means that a larger depolarizing stimulus than normal is required to do activation. The high threshold enables neurones to go selective for noxious mechanical stimulation ( Enohumah, Imarengiaye 2008 ) . The stimulation can be interpreted as dynamic ( motion ) or inactive ( place feeling ) ( McDougall 2006 ) . Pain transmittal is as follows ; the nociceptors are stimulated and primary sensory nerve fibers which fire action potencies doing the release of substance P ( a peptide which increases hurting by leting the spinal nociceptors to be easy stimulated ) ( Enohumah, Imarengiaye 2008 ) . This activates cells in the dorsal horn of the spinal cord where they synapse with spinal neurones and transmit nervus urge to the mesencephalon and cerebral mantle. Chemical go-betweens such as prostaglandins and leukotrienes can be released from the site of tissue harm ensuing in peripheral nociceptor sensitisation ; this is the progressive elaboration of a response followed by perennial disposals of a stimulation. Pain felt in degenerative arthritis can be accounted for by the presence of ‘silent nociceptors ‘ which in a healthy person are non activated by a stimulation. These receptors can go activated following tissue harm or redness ( Felson, Schaible 2009 ) . This means that for person who is already sing an increased sum of hurting the activation of these receptors enhances the grade of hurting felt. Pain can besides be accounted for by peripheral sensitisation caused by a lessening in the activation threshold of nociceptors and afferent neurones, doing them to go hyper-responsive to both normal and noxious types of motion. If nociceptors are more sensitive to motion this besides contributes to both allodynia and hyperalgesia as motion becomes more painful. Two squads of research scientists Coggeshall ( 1983 ) and his colleagues and Schaible and Schmidt ( 1986 ) illustrated that the injection of china clay and carrageenin could do synovitis ; the redness of the synovial membrane, by take downing the activation threshold of type III and type IV nociceptors in articulatio genus articulations. By take downing the activation threshold they made it easier to excite the nociceptors, increasing the figure of action potencies produced per unit clip for noxious and innocuous stimulations, doing hurting. Decreasing the activation threshold and the activation of soundless receptors together increases the hurting felt by degenerative arthritis patients ( McDougall 2006 ) . This suggests that if it was possible to increase the threshold of nociceptors, hurting signalling would be decreased ; this is an thought for possible interventions in the hereafter. A farther proposal for the hurting felt in degenerative arthritis is an addition in intra-articular force per unit area ; the human articulatio genus contains synovial fluid within the joint. After hurt or on redness ( see Figure 3 ) the plasma membrane of blood vass becomes progressively leaky and allows plasma proteins to go forth the vasculature and come in the intra-articular infinite. This causes a alteration in the starling forces which allows fluid to flux into the joint causation localised hydrops, ‘excessive accretion of fluid in the organic structure tissues ‘ ( Oxford Concise Medical Dictionary 2007 ) . This Results in the puffiness of the joint increasing the intra-articular force per unit area, doing hurting within the joint, due to an addition in unstable energizing nociceptors. Figure 3: Illustration of How a Number of Chemicals and Neuropeptides Work Together to Cause Pain, Inflammation and Joint Degradation. The figure above shows how, Iinterleukin-1 ( IL-1 ) , interleukin-6 ( IL-6 ) , and tumour mortification factor ( TNF ) are illustrations of proinflammatory cytokines and direct the matrix metalloproteinase ( MMPs ) to degrade connective tissue. MMPs degrade the connective tissue that make up joint tissues. The loss of joint infinite that develops in degenerative arthritis is due to the activity of the MMPs. Growth factors ( VEGF ) can besides hold a infective function in Osteoarthritis. VEGF promotes the development of blood vass to let tissue growing. Research suggests that VEGF is involved in degenerative arthritis. Blood vas growing is accompanied by an increased nervus supply taking to increased hurting. The chondrocyte produces inordinate free groups that assist in the devastation of the environing joint tissue. Free groups are non pictured above ( Sharif et al. 2000 ) , ( Image taken from: Bonnet, Walsh redness. 2005 ) . To forestall tissue harm to articulations the organic structure has a protective mechanism to halt over extension or flexure of articulations, the joint senses the possible harm and releases hurting signals which prevent farther motion of the joint. In degenerative arthritis this protective mechanism is hyperactive and hurting is felt when the articulation is moved within the normal scope. Recent grounds suggests that osteoarthritic hurting is therefore ; joint motion creates emphasis on the axolemma of the ‘free ‘ nervus terminations, ensuing in the gap of mechanogated ion channels, the inflow of Na ions causes depolarization within the neurone and consequences in an action potency ( See Figure 2 ) . Mechanoreceptors are located in the Type III and IV sensory nerve nervus fibers, these channels have been discovered in articulatio genus articulation sensory nerves by electrophysiology measurings and supply an penetration into the physiological mechanisms which are respons ible for mechanotransduction in articulations ( McDougall 2006 ) . These receptors cause increased ionic conductance and cellular depolarisation, doing an action potency and the hurting esthesis ( Heppelmann, McDougall 2005 ) . To understand hurting in degenerative arthritis it is of import to set up where the hurting originates ( See Figure 4 ) . Cartilage is aneural and avascular so pain must arise from other constructions of the joint ( Felson 2001 ) . Possibly the subchondral bone, which is extremely innervated with postganglionic neurones, or the periosteum, synovial membrane, ligaments or the nervus capsule, All of which have nociceptors, maintain vascular tone, permeableness and bone homeostasis ( Dray, Read 2007 ) , any harm to these countries could do hurting. When articular gristle re-modelling occurs there is compaction of soft tissue and microfilaments in the subchondral bone. There is besides gush and cramp of musculuss environing the joint which could explicate the beginning of hurting in degenerative arthritis ( Enohumah, Imarengiaye 2008 ) . Figure 4: Diagram to Show Causes of Pain and Pain Transmission in Osteoarthritis. T This figure shows how a figure of factors influence hurting in degenerative arthritis some of these are mechanical factors ( MF ) others involve enzymes and biochemical tracts. The diagram besides shows how some factors could be used to increased gristle grows, a possible intervention for degenerative arthritis. ( Image taken from hypertext transfer protocol: //www.fortehealthcare.com/Cartrophen/technical % 20brochure.html ) As mentioned the articulation is made up of a figure of constructions of articulations ( See Figure 1 ) each of which can deteriorate and do hurting during degenerative arthritis ( See Figure 5 ) . First, the subchondrial bone this is a bed of bone below the gristle. During degenerative arthritis blood flow is increased to this country leting subchondrial cysts to develop. This build up of fluid in the bone causes a force per unit area addition, the addition in force per unit area pushes against the bone and activates noticepters which transmit hurting signals. Changes to the capsule and synovial membrane can besides do hurting ; redness occurs which consequences in an increased volume of fluid, increasing the sum of force per unit area on the joint which causes hurting. The sinews and Bursa can go inflamed and cause, tendonitis and bursitis which causes hurting and decreases the scope of motion of the joint. Muscle blowing and failing besides occur which restrict motion, the deficie ncy of willingness to exert can do musculus and ligament wasting which can do hurting ( Enohumah, Imarengiaye 2008 ) . As unexercised musculuss become weak and less able to set about strenuous undertakings this can go on to anyone but is more likely in a patient with degenerative arthritis and although this does non straight do hurting, musculus failing does increase hurting. This diagram illustrates that the joint border lessenings and the synovial fluid volume lessening in patients with degenerative arthritis. The Cartilage besides thins. The decrease in joint infinite, synovial fluid volume and cut gristle causes castanetss to rub against each other on motion doing hurting. ( Image adapted from hypertext transfer protocol: //www.mobilitychoices.co.uk/glossarypage.php? uid=46 A ; start=A ) Figure 5: Comparison of the Anatomical Features of a Joint with Osteoarthritis and a Joint of a Healthy Individual. The softening and cutting of gristle can be seen when imaging a joint with degenerative arthritis as there are cavities, it appears unsmooth, and has lesions in the gristle. This causes the gristle to go prone to splitting. This is a secondary cause of hurting in degenerative arthritis as it can take to interrupt castanetss, soft tissue harm and breaks which in bend all cause hurting signals to be transmitted to the encephalon. The organic structure attempts to mend this harm by originating bone re-growth the growing occurs unevenly and causes hurting. A lessening in the joint border and the decrease in volume of synovial fluid cause bone to rub against bone in an Osteoarthritis patient. In a healthy person this does non happen due to the presence of synovial fluid, leting clash free motion ( See Figure 5 ) . The stiffness of the new gristle makes the joint less able to absorb daze, doing motion painful. Osteoarthritis patients frequently complain of hurting non merely when traveling but besides when resting this can be explained by looking at the redness of articulations frequently associated with degenerative arthritis. When a articulation is inflamed a lessening in the hurting threshold consequences, this means that hurting signals that would usually travel unnoticed are transmitted via nociceptors to the encephalon. This is known as allodynia where hurting is felt for a usually innocuous stimulation ( McDougall 2006 ) such as sitting down or walking and hyperalgesia where increased hurting is experienced during an activity. An account for the disagreements between joint harm seen on X raies and joint hurting could be explained by looking at the two hurting transmittal tracts, the sidelong and medinal systems ( for hurting transmittal See Figure 2 ) . The thalamus and cerebral mantle are the countries of the encephalon that are involved in having and covering with hurting signals. The sidelong system, involves the stimulation of thalamic karyon in the ventral sidelong thalamus. The information is transmitted to the somatosensory cerebral mantle for analysis of location, continuance, strength and vicinity. The median system uses the midplane and intralaminar thalamic karyon to convey urges to different parts of the encephalon including the amygala to do affectional responses, attending and acquisition. The country of the encephalon urges are directed to change the hurting felt. If one system is stronger or more prevailing in some patients than others this could impact the sum and type of hurting felt and the class of intervention ( Hunter 2009 ) . Pain experiences are alone and effected by life experiences and genetic sciences. For illustration, a individual ‘s assurance in their ability to set about a undertaking or motion will specify their success in the undertaking. A patient ‘s inclination to catastrophize, or to do the best of a state of affairs will alter the hurting experience. The more hurting anticipated the more hurting felt ( Hunter 2009 ) . Social factors such as if a patient has a supportive environment, if they are stressed, low in liquors or traveling through an emotionally hard experience affect the sum of hurting felt ( Felson, Schaible 2009 ) . Factors that influence hurting but may non hold a scientific or physiological ground are besides of import indexs for the cause of hurting. Physical activity can increase or diminish pain esthesis. An addition in hurting can be felt when exerting particularly flexing and weight lifting, others feel soft exercising decreases hurting. The footwear a patient wears high heels increase hurting as there is increased emphasis on the articulatio genus articulation, whereas supportive flat places tend to do less hurting ( Hunter 2009 ) . If the patient has a past hurt or an hurt occurs and eventually environmental factors some patient ‘s complain of increased hurting during cold and wet conditions with high force per unit areas than on all right just yearss. No scientific grounds has shown these factors to act upon hurting but many patients do see alterations in hurting that can non be explained by imaging or disease provinces ( Enohumah, Imarengiaye 2008 ) . Pain in degenerative arthritis is n’t merely cognitive but there is affectional hurting excessively, this means that many degenerative arthritis patients suffer from depression and anxiousness ( McDougall 2006 ) . This could be due to the deficiency of mobility doing many patients to experience stray. It is hence imperative that the hurting tracts in degenerative arthritis are understood to let the development of effectual interventions to better the quality of life of a patient. Osteoarthritis is characterised by hurting in the articulations on activity which is relieved on remainder, this is episodic hurting. Advanced degenerative arthritis is when hurting can besides be felt at remainder and at dark and is known as chronic hurting. The hurting normally occurs as decreased map of the joint, stiffness or gelling of the joint which is short lived and relieved after inaction. Pain is variable and great differences can be seen in the sensed hurting in patients with similar scans. Pain is transmitted from the site of hurt to the encephalon down specialised neurones know as nociceptors. Nociceptors have a high threshold and hence merely transmit noxious stimulations. Although cartilage re-growth can trip hurting, gristle is avascular and aneurla and therefore research is concentrated on looking at the other construction of the joint that could do hurting. A possible mark for drug action is on the neuropeptides which can heighten the hurting felt by a patient when traveling the joint. Another cause of hurting is ; redness doing a lessening in the hurting threshold and the activation of soundless receptors. A ground for the disagreements between imaging of the joint and the hurting felt could be explained by looking at the two chief tracts of hurting transmittal the sidelong and medinal tracts. These tracts transmit signals to different countries of the encephalon and hence do a different experience of hurting, if these tracts were better understood they could be countries for drug intervention. Pain and redness are linked and hence interventions that relieve the symptoms of the disease may besides better the earnestness of the status. Finally, hurting can besides hold a cognitive cause this is where the patient uses past experiences and the environment to judge the hurting felt. If a patient was more comfy, less stressed, happier and in more agreeable conditions they may see a decrease in hurting despite no alteration in the disease province . This nevertheless is a complex physiological state of affairs and requires more research before it can be used in clinical scenes to cut down hurting. Another possible intervention could be to increase the hurting threshold this would do it harder to originate an action potency and the patient would be able to travel the joint more before hurting was felt. Before advanced and effectual interventions for degenerative arthritis are to be developed it is indispensable that more research on hurting transmittal and causes is undertaken. Word Count: 2,587 How to cite The Pain In Osteoarthritis Health And Social Care Essay, Essay examples

International Business Essays (755 words) - Economy, Transport

International Business Tarhab Motiwala Assignment 5 Critical thinking (page 311) 3. What effect is creation of a single market and a single currency within the EU likely to have on competition within the EU? Why? ANS: The EU with its 500 million consumers has swept away huge numbers of barriers to trade and not least regulatory differences between different countries to bring out common procedures, standards and rules. As a single market and single currency area the degree of competition has become extremely high. The factors that caused this high competition. i ) a single market on competition within the EU is an increase in competition between companies from the EU countries. Trade barriers are swept away which makes it easy for companies to get involved in cross-border trade and extend the number of markets they serve without spending a lot of extra money. This should help to contain inflation and will therefore be beneficial to consumers. ii) a single currency combined with a single market within the EU have on competition is the price transparency across the Europe. 4. Do you think it is correct for the European Commission to restrict mergers between American companies that do business in Europe? (For example, the European Commission vetoed the proposed merger between WorldCom and Sprint, both U.S. companies, and it carefully reviewed the merger between AOL and Time Warner, again both U.S. companies.) ANS: In my opinion, I do not think is right for the European Commission to restrict merger between American companies that do business in Europe. However, I do believe that upholding some legal laws that limit certain restriction to ensure the legality of American business done in Europe. By doing so, Europe Union, creates a positive economy unity throughout Europe. The monetary stability with the use of Euro, the ability to strengthening individual countries, and the free border makes Europe a strong country. The ability to restrict, propose, and review any America business done in Europe gives them the power to control many political and economic within the country. In reality by them limiting the international business sets boundaries on what American business can do in European grounds. Questions (page 313) 1. What are the potential economic benefits of the trucking provisions in the NAFTA treaty? Who benefits? ANS: The potential economic benefits of the NAFTA treaty are transportation costs being cheaper and travel time would be cut down. Both the United States government and Mexican government as well as Mexican truck drivers benefit from this treaty. Both governments would end up saving money from the cut in operation costs and Mexican truck drivers benefit because they are working more, driving to final destinations rather than just the border. 2. What do you think motivated the Teamsters to object to the trucking provisions in NAFTA? Are these objections fair? Why did Congress align itself with the Teamsters? ANS: The teamsters claimed that Mexican truck drivers had poor safety records, that Mexican trucks did not adhere to the strict safety and environmental standards of the US and that the limits on the hours a driver can spend behind the wheel are ignored in Mexico thereby giving the Mexican truck drivers an unfair cost advantage. My opinion that the biggest motivation for the Teamsters objecting to the trucking provisions is the increase in competition from Mexican trucking companies in their market which would undoubtedly result in reduced profits. In 2007, Mexican drivers were followed for 18 months and this proved that the Mexican drivers had a better safety record than the U.S. carriers. That is why I believe the objections are not fair. The pilot program proved they can follow the additional 22 safety standards they were required to pass and have still have a better record than the U.S. I think Congress initially align itself with the Teamsters because of the union and the power of unions. In addition, they were convinced with the statement made by th e Teamsters. 3. Does it make economic sense for the United States to bear the costs of punitive tariffs as allowed for under NAFTA, as opposed to letting Mexican trucks enter the United States? ANS: Mexico s punitive tariffs are justified and

Reflective diary The WritePass Journal

Reflective diaryï » ¿ Abstract Reflective diaryï » ¿ ). Focussing on an area of development, namely agriculture was useful at this stage to see how international development can apply in specific regions. Session 6 Looking at transnational migration was interesting but academically challenging. I found the mobility of individuals to be a particularly informative way of understanding international development and also understanding why certain regions, such as the UK, seem to be more prone to migration than others. It did however result in me questioning preconceived ideas of international development and to take a more liberal view of people migrating out of developing regions. This was linked with other theories such as how agriculture impacts on international development (Wedman and Martin, 1986). Conclusions: By looking at the facts associated with transnational migration, it became apparent that this issue was actually much more widespread than I had originally thought, as money was often being remitted back to countries where the workers were not actually working, thus creating a movement of finance which was not readily obvious, yet was potentially crucial to the development of those regions that do not have their own internal finances. Session 7 Session 7 was, to a certain extent, an extension of session 5 which dealt with agricultural policy and considered the way in which climate change can work and is relevant to international developments, which I perceived to be closely linked to any country which relied on the climate or natural resources, to gain income. As this is an area of interest to me I became heavily involved in the discussions and as the actual seminar was run by Oxfam an element of reality was also presented from a practical point of view. This was similar to the ERM seminar and brought the theory together with practice (Winter, 1995). Conclusions: I found this very interesting, as I had not previously thought of climate change as being such an important factor in the developing regions. This encouraged me to think about wider issues when looking at a specific international problem. Session 8 This session was also very enlightening, as it focused on the role of non-government organisations, something which I had previously overlooked. My preconceived ideas relating to international development were very much based on government interference and ideas however this seminar made me think on a wider basis about non government organisations. By listening to a non-governmental organisation, a much more proactive understanding emerged, as it looked at ways in which it was motivating individuals to increase their knowledge and how the project could have a direct impact on the finances of a particular group of individuals. Conclusions: This is the first seminar where individuals were looked at in detail, and this gave it a really good human feeling which I found useful to put previous theory into context (Keenan Gilmore 2011). Session 10 Finally, we had the opportunity to look at all of the above issues, in the context of Malawi, and how poverty in this region is being dealt with, as well as identifying the key factors which affected the wider region, such as financial problems (Mulholland Turnock, 2012). This session was the most interesting I found as I had the background knowledge to put into practice and I fully participated in doing so.. Conclusions: Having studied the previous session, this session enabled me to pull together the ideas and also to use statistical data to analyse the level of poverty, in more detail, with a much broader background understanding than had been gained in the earlier sessions. Conclusions My original expectations of this course was that it would be heavily focussed on economics and trade yet there was in fact a much broader range of issues to be looked at. In particular I enjoyed the area of human interactions such as poverty in Malawi and the work of Oxfam in particular as this enabled me to understand the theories that I had previously grasped. I am looking forward to using these theories in more detail for international development studies in the future and in particular for looking at ways in which these different theories can come together to improve development in the poorer regions. References Brockbank, A. McGill, I. (2007) Facilitating Reflective Learning in Higher Education, McGraw-Hill International. p.169 Carbonnier, G (2012) International Development Policy: Aid, Emerging Economies and Global Policies, Palgrave Macmillan Keenan, F Gilmore, C (2011) International Development: A Casebook for Effective Management, iUniverse. Kolb, D. A. (1984) Experiential Learning: Experience as a Source off Learning and Development. Englewood Cliffs, NJ: Prentice Hall. Moon, J, A. (2000) Reflection in Learning Professional Development: Theory and Practice. Kogan Page Moon, J (2006) Learning Journals: A Handbook for Reflective Practice And Professional Development, Taylor Francis. p.81 Mulholland, J. Turnock, C. (2012)Â   Learning in the Workplace: A Toolkit for Facilitating Learning and Assessment in Health and Social Care Settings, Routledge. p.75 Wedman, J and Martin, M. (1986) ‘Exploring the development of reflective thinking through journal writing’, Reading Improvement, 23, 1, 68-71. Winter, R (1995) ‘The assessment of professional competences:the importance of general criteria’ in The Assessment of Competence in Higher Education, eds A Edwards and P Knight, Kogan Page, London.

The 10 Best Culinary Schools in the US

The 10 Best Culinary Schools in the US SAT / ACT Prep Online Guides and Tips If you want a career as a chef, just trying out new recipes at home isn’t going to cut it. You’ll need to hone your skills through education, experience, or both. One of the ways to become a chef is by attending culinary school. In this article, we’ll outline what culinary schools are, who should attend them, and provide a list of the ten best culinary schools for prospective chefs. What Are Culinary Schools? Culinary schools provide professional, accredited courses related to cooking, creating recipes, decorating food, and more. When you attend culinary school, you’ll learn all aspects of food preparation and service. Culinary schools have different degrees and certificates based on what you studied. What Degree Do You Get at a Culinary School? You may associate culinarycolleges with becoming a chef, but these schools actually offer a range of degrees. But what types of degrees can you get at a culinary school depends on the school you attend and the program you enroll in. Some of the most popular culinary school programs include: Culinary arts Culinary management International cuisines Baking and pastry arts Hospitality management Restaurant management Students with a culinary school degree have many job opportunities. You can become a chef, a baker, a food and beverage director, a resort manager, or something else entirely. That being said, is a culinary school degree necessary to work in the food and beverage or hospitality industries? Do You Need to Go to Culinary School to Be a Chef? In short, no. It’s not mandatory to go to culinary school to become a chef. In the culinary world, experience goes a long way. Many chefs get their start by accumulating industry experience as line cooks or other kitchen helpers. That being said, going to culinary school has its benefits. After graduating, you’ll have a degree that demonstrates your preparation and education. Having a culinary school degree can help open doors for you as you try to get a job as a chef. 10 Top Culinary Schools If you’re looking to get a degree from a culinary school, these ten schools are the best of the best. #1: Culinary Institute of America at Hyde Park The Culinary Institute of America was founded in 1946 and is one of the best culinary schools in the world. With campuses in New York, California, and Texas, it has many options for students across the country. The school offers a number of degree programs, including bachelor’s and associate degrees. There are also professional development programs, as well as certificates for food and wine enthusiasts. #2: Institute of Culinary Education With campuses in Los Angeles and New York, the Institute of Culinary Education is a good option for a culinary degree. The Institute of Culinary Education offers diplomas in hospitality management, pastry and baking arts, culinary arts, and more. ICE has multiple degree programs of different lengths, so you can craft an education that meets your goals. With more than 14,000 graduates, ICE is one of the most renowned culinary degree programs in the United States. #3: L’Academie de Cuisine Despite the French name, L’Academie de Cuisine is located near Washington DC. Founded by fabled chef Francois Dionot, L’Academie is known for its rigorous approach to food education. There are just two degree programs here: pastry arts or culinary arts. Each program has three phases, the final one being a paid apprenticeship at a fine-dining establishment. #4: Johnson and Wales University Johnson and Wales University has locations in Florida, Denver, Charlotte and Providence and offers ten different culinary programs to choose from. Program options include culinary arts, culinary nutrition, culinary science, baking and pastry arts, restaurant, food and beverage management, and more. The breadth of degree programs at Johnson and Wales provides a good option if you want to study the culinary arts, but aren’t exactly sure what you want to specialize in yet. #5: Metropolitan Community College: Omaha, Nebraska Metropolitan Community College in Omaha, Nebraska has one of the best culinary programs in the country. The programs here are focused on helping you become a restaurant manager or a chef through a combination of education and experience. Low tuition prices and the chance to build a strong culinary portfolio make this school a great option. #6: Auguste Escoffier School of Culinary Arts The Auguste Escoffier school teaches techniques developed by the â€Å"King of Chefs,† Auguste Escoffier. This program offers small class sizes, as well as unique opportunities like the three to ten week â€Å"Farm to Table† experience that brings students out of the kitchen and onto the farm. Students learn state-of-the-art techniques and receive valuable paid internship opportunities. #7: Sullivan University National Center for Hospitality Studies Given an â€Å"exemplary† rating by the American Culinary Federation, the Sullivan University National Center for Hospitality Studies offer associate’s degree programs that students can finish in eighteen months. Graduates of the program have gone on to work as chefs, nutritionists, food scientists, and more in a number of different places. #8: New England Culinary Institute The private, for-profit New England Culinary Institute has many options for wannabe chefs, including associate's and Bachelor's degrees. Both degree programs require internships, so students will have plenty of hands-on experience. NECI also offers a number of options for career placement, like career counseling, professional development workshops, and and networking opportunities. Celebrity chef Alton Brown is an NECI alum, so if you're a "Good Eats" fan, you might want to apply here. #9: San Diego Culinary Institute The San Diego Culinary Institute focuses on practical application, with over 80% of the program occurring in the kitchen. Programs are typically completed in eight to eleven months and have both full and part-time options. As part of your work at the San Diego Culinary Institute, you’ll complete a paid internship that helps you get on the ground experience. #10: Culinary Institute of Savannah The Culinary Institute of Savannah caters to students at all stages of their careers, from total beginners to experienced. Students learn both international and American cooking techniques and can earn degrees in Culinary Arts or Culinary Baking and Pastry Arts. All degree programs require extensive time in the kitchen. Culinary Schools: Final Thoughts It’s not necessary to go to culinary school to become a chef, but if you want a culinary degree, there are tons of options for good schools out there. Consider what you want to study and how much hands-on experience you’d like when deciding which culinary school to apply to. What's Next? Not sure if a graduate degree is the right move for you? Then take a look at our in-depth guide on what grad school is and how to determine whether you should go as well as our specific guide to master's degrees. Not that into cooking and more interested in the arts? Then perhaps you'll want to take a look at our picks for the best performing arts schools and the best creative writing programs.

Statutory Interpretation Case Study Example | Topics and Well Written Essays - 1000 words

Statutory Interpretation - Case Study Example Alec took a pecuniary advantage by deception of Vera to gain more money from the woman by dishonestly selling to her a computer that is worth 1000 for 2000. When he supplied the computer to her, he insisted that the computer is worth every penny of the 2000 given to him by Vera. There was no reason as to why the old woman would have thought the computer in question was not worth 2000 and we can not say that he was reckless to the representation of the computer. Alec knew very well the actual cost of the computer since they sold the machine at 1000 but she took advantage of the old woman and charge her double the amount the computer is worth. This act is a criminal offence under s 15 Theft Act 1968 for acquiring extra money from Vera dishonestly from the sale of the computer. For this case, Alec if convicted is liable for imprisonment of a term not exceeding ten years. This Theft Act was brought about to protect ordinary citizens from exploitation by people who want to obtain property from them in a dishonesty manner by deception. 1 For the case where Brian, an employed IT technician obtained services by deception is liable for criminal offence under the s 1 Theft Act 1978. ... Brian was a cousin to Bryan and since they share the same surname, there is no way as to why Wendy would have doubted the representation. Brian held both the season ticket that belonged to Bryan and his driving license and since they share the same surname, we can not say the Wendy was reckless to the representation and he failed to verify the two documents. For this case, Brian if convicted is liable for a criminal offence under s 1 Theft Act 1978. The Act was enacted to bring to book those who dishonestly obtain services by deception. Brian deceived Wendy, the gate attendant to believe that the services of attending to the football match has already been paid for and he was entitled to watch the football. For this case, he obtained services of watching football match by deception hence he is liable for criminal offence under s 1 Theft Act of 1978. 2 For the case where Alec advertised for a post of a qualified IT specialist who was to be graduate of BSc degree in IT but he ended up recruiting Brian who had faked that he was a graduate. Brian obtained pecuniary advantages by deception to be hired by Alec where he pretended to have graduated with a Bsc. Degree in IT where else he was using Bryan degree certificate. There is not way Alec would have noted that Brian was not a graduate since he had a degree certificate. The name Brian and Bryan looks similar and one would not note the difference between the two names and this led to Alec being deceived by Brian and recruited him to the position of a qualified IT technician believing that he was a BSc. Degree graduate. Brian was dishonest since he knew very well that he was not a BSc. Degree graduate and yet he went ahead of applying for position of a qualified IT technician with a fake degree certificate. For

Staffing Organizations Part 1 Essay Example | Topics and Well Written Essays - 1250 words

Staffing Organizations Part 1 - Essay Example Thus, terms of employment will entail permanent employment contracts, in which the employees will have secure provisions for their job positions. The permanent employment-terms fosters employee loyalty and keeps the workers settled as they focus on work; hence, it will allow full concentration of workers at work; hence, effective service delivery (Aswathappa, 2005). Additionally, the business will also institute measures of eliminating conflicts among employees and misunderstandings that may arise at the workplace. However, there will be strict corrective action, including facilitation for verbal warnings, as well as, written documentation as warning for misconduct, to facilitate corrective action that follows legal confines of permanent employment guidelines. There will also be employee performance evaluation and awarding of incentives and feedback to motivate the employees accordingly. The support structure for employees will help develop employee relations with the business, creat ing loyalty and motivation to work effectively. Treating employees less favorably or discriminately based on age, religion, race, sex and disability among others are forms of discrimination under various provisions of law. Therefore, in creating a successful working environment in the business to avoid claims of disparate treatment, the first procedure is to review the state laws concerning termination processes as applicable to the permanent employment terms. This will help in ensuring the business follows due process in terminating the employees who fail to meet the working requirements and expectations without claims of disparate treatment arising. The management will file the issued documentation of warning before termination. Additionally, in factor of employment benefits claims, the business will follow due procedures as stipulated in the state laws and bylaws in the location of the business. Thus,

Prototype Modeling of Smart Grid Technology at Ciit Lahore

Prototype Modeling of Smart Grid Technology at Ciit Lahore CHAPTER 1 INTRODUCTION TO SMART GRID 1.1 Introduction 1.1.1 Definition: The smart grid system is vast collection of technologies to provide an electricity network having the ability to solve the major issues related to reliability, cost effectiveness of electric power and decentralization or grid dependency The smart grid technology using renewable energy sources transferred electricity towards user side with the concept of integration of renewable energy sources. 1.1.2 Why Smart Grid Technology Adopted The demand of electricity is increased so much by the passage of time, which creates some major problems related to conventional electricity network. By 2020 energy demand will be doubled from the present demand [1]. Smart grid is the result of such efforts which are performed to make availability of electricity more reliable, economical and user friendly with the concept of decentralized network due to two way communication of electricity through network[2]. The Architectural model of a 21st century power system that interconnects everyone to affordable, abundant, clean, reliable, and efficient electricity anytime, anywhere. The purpose of Smart Grid is also to integrate several renewable resources with our national Grid and enhances the efficiency; reliability and thus providing a hassle free Transmission of electric power. It also contributes to reduce carbon emissions and providing a pollution free environment. 1.2 Back Ground 1.2.1 The European Development in the Area of Smart Grid In the next three decades European member state will expend about 750 billion in power infrastructure. This amount will expend on generation and networks. The European Technology plate form was developed in 2005 to solve the problems of Network Owners, operators and users[3]. 1.2.2 Smart Grid Development in USA In USA the Smart grid developments initiated during first Bush Administration[4]. In 2002 a DOE study describes the hundred of million of Dollar spent In US power systems on transmission practices and results a proposal of construction of transformed national electricity grid upto2030 providing the best and secure transmission of electricity[5]. 1.2.3 Smart Grid Development in Australia Under the Energy Transformed Flagship the Intelligent Grid Program was launched on 19 Aug, 2008. This Program researched in the fields of Control methodologies and economic modeling for distributed generation, Social impact of Intelligent grid, New housing developments and micro grids[6]. 1.3 Design Description 1.3.1 Features of Smart Grid The most important features of Smart Grid Technology are: Integration of Renewable Sources Battery Storage option Provide electric power to both AC and DC loads Advance Monitoring 1.3.2 Proposed Methodology Above figure shows prototype modeling of smart grid system at micro level along with the integration of several renewable energy resources such as small wind plant and solar panels. The charge controllers are special devices used for the purpose to control the abrupt change in voltage and stop the reverse flow of current towards PV or wind turbine systems, and also control the charging and discharging of batteries. An integrator is also one of the most important components of our project. The function of this device to integrate powers from both energy sources in a way that during operating time of the sources loads will directly get power from these sources and at night or the time when these sources are not operating loads are facilitated through battery banks. 1.4 Advantages of Smart Grid A. Motivates and Includes the Consumer Smart Grid is a end user device it motivates the consumer to generate a free source of electricity and to utilize it in household appliances when electricity from Grid is not available. B. Provides Power Quality for 21st Century Needs It provides power free of disturbance, sags, interruptions and spikes. C. Markets Opportunities Smart grid supports energy markets that encourage both investment and innovation. D. Operates Efficiently and Optimizes Assets Smart grid is easy to install infrastructure, transmit more power through existing systems and optimizes easily with present grid. E. Reduction in cost of power infrastructure When renewable energy sources are infused into the power grid, end-use demands can be adjusted to available power supplies. The ability to manage and reduce peak demands demolishes the need for costly peaking and â€Å"just-in-case† power infrastructure. F. Reduced use of polluting plants Some existing powerplants are not environment friendly which is adversely affecting the environment around us. Smart grid can produce pollution free generation of electricity. G. Clean power market During serious air pollution alerts, power plants and heavy industries sometimes shut down. Smart Grid ensures you clean power options. H. Energy storage Smart Grid is also equipped with battery backup options which not only stores energy also used as grid shock absorbers as well. I. Integrate able with Energy Resources and Storage Options The system also enables plug-and-play interconnection to multiple energy resources and storage devices (e.g. solar, wind, battery storage, etc.) 1.5 Brief Introduction to chapters Chapter 2 This chapter is a survey report about renewable energy sources. Also wind and solar characteristics of Pakistan are given in this chapter. Supply and Demand gap also discussed in this chapter. Chapter 3 This chapter is about PV system. Complete introduction and types of PV system are discussed also given here the architecture model of PV system with design description. And the experimental values also mentioned in this chapter. Chapter 4 This chapter defines the wind turbine specifications. Chapter starts from introduction then history discussed and after that design description is completely described. The experimental values also given in this chapter with advantages and drawbacks of wind turbine technology. Chapter 5 This chapter covers the remaining portion of smart grid technology. First of all integrator is discussed with design after that charge controller and power inverters also discussed with there design and circuitry. CHAPTER 2 LITERATURE SURVEY Contents: World Wide Survey of Renewable Energy Demand Supply Gap in Pakistan Depletion in Oil and Gas Energy Sources in Pakistan Wind Energy Solar Energy 2.1 World Wide Survey of Renewable Energy Renewable energy has an essential contribution in world energy generation. So many projects are under consideration regarding to renewable energy. 2.1.1 Global Status Report This report describes the market condition, investment and targets as well as policies. The report doesnt describe analysis or conclusions, though it reveals some extra ordinary facts regarding the renewable energy . By the end of 2005 only 45 countries were included in the achievement of renewable energy targets which are increased up to 76 in 2009. According to this report last year was the best era for renewable energy. Capacity in developing countries grew to 119GW, or 43% of the total. Including Pakistan and magnolia less or more than 8-0 countries has started plantation of wind power plants at commercial measures[7]. Some achievements of the year 2008 are: In just 1 year the capacity of solar photovoltaic plants tripled to 3 GW from 200 KW. Wind power by 29% and solar hot water increased by 15%. Grid connected photovoltaic systems increased up to 13GW, wind energy grew up to 250%, 121GW and total power generation capacity from renewable energy boost up to 75%. Spain becomes the super power in the field of grid connected PV systems with inclusion of 2.6GW. Germany also takes some handy steps and added 1,5GW in their system. Some other developed countries also provide large contributions like USA(3ooMW), Italy ( 300MW) , South Korea ( 270MW) and Japan (240MW) respectively . in total 16GW is the generation of solar including off-grid by 2009 worldwide. Table2.1 Energy Added and Exists in 2009-2010 2.2 Demand Supply gap in Pakistan If we give a look at demand supply graph then we will come to know that the difference between demand and supply is becoming wider and wider by the passage of time .the scenario in 3rd world countries is totally discriminated e.g. Pakistan. Needs are increasing exponentially but we are desperately lacking in finding out a good solution. if we have an eye view we may find 3 reasons of demand supply gap. Increase in prices of oil and gas , increase in population and increase in cost of energy . 2.2.1 Energy Demand With the increase in population energy requirements are also increasing. All the industry and the production of our daily need in dependent upon electricity . 2.2.2 Energy Supply Current eras total production of energy does not meet the current requirement of energy , though the end results are critical in the sense of increase in demand supply gap . Serious steps are needed to be 2.2.3 Energy cost If we have eye view on last few decades we will come to see the highlighted reduction in the reserves of oil and natural gas, which causes the increase in the cost of per unit production of electricity. This is also the reason of widening the demand supply gap. 2.2.4 Sustainability level The systems which are to be used for the generation of electricity must be stable, but unfortunately we have not surety of sustainability level of present system and the graph is gradually decreasing according to our present and future demands . This decrease in sustainability may overcome by using alternative techniques. 2.3 Depletion in oil and gas A large amount of electricity is being produced by fossil fuels and the present value of electricity generated by fossil fuels is increasing. According to the European energy commission and International energy the present reservoirs of oil and gas are not sufficient enough to meet the future requirements. so as the result after 10-12 years we have the depletion in the percentage of Oil using for the generation of electricity as shown in fig 2.2. As from the above it is obvious that from 1930 to one word till 2010 there is continuous growth in both oil and gas reserves but after 2010 there is deep declined. If the above graph follows the same pattern there is near future we will be totally dependent upon alternates of energy generation. 2.4 ENERGY SOURCES IN PAKISTAN The primary energy supplies today are not enough to meet even the present demand. More, a very large part of rural area does not have the electricity facilities because they are too expensive to be connected to the national grid. So, Pakistan like other developing countries in the region is facing a severe challenge in energy deficit. The development of renewable energy sources can play an important role in meeting such challenge. If we see around yourself Pakistan best suits for Solar (PV, thermal), water, wind and Wastes. These are the best renewable sources and Pakistan doesnt lack these. Pakistan can b benefited from these as substitute energy in areas where these renewable sources exist. Renewable energy Fossil fuels Nuclear power 2.4.1 Renewable energy It is energy which is produced by natural sources such as wind rain solar and geothermal heat. 2.4.1.1 Types of renewable Energy Wind Biomass Solar Wave and tidal Geothermal These all sources are best placed in Pakistan and we are not lacking in any at all , thus we can produce great amount of energy using these renewable sources , Capturing renewable energy by animals , plants and humans does not permanently deplete the resource. Fossil fuels are renewable but on a very long time-scale, are exploited at rates that may deplete these resources in the near future. 2.4.2 Fossil Fuels It includes natural gas, oil and coal . fossil fuels are lacking in Pakistan as well the world therefore renewable sources are needed to meet th essential needs 2.5 Wind Energy Wind energy is one of the best of renewable sources and probably suits Pakistan atmosphere at peak. As our project is related to wind energy as well. In Pakistan wind energy projects are working under the Pakistan Meteorological Dept with the financial collaboration of Ministry of Science and Technology which are accomplishing many such projects in Pakistan. About 3% of the total Pakistans land area is termed as good to excellent for utility scale production of electricity. Fig2.3. shows the variations of wind speeds in different areas of Pakistan Average wind speed in Lahore is 3m/s as shown in Fig.2.4 . Therefore for the prototype smart Grid system, average wind speed must exceeds the theoretical values as given in[10]. 2.6 Solar energy Its one of the types of renewable energies, as in our project we are working on solar energy, in photovoltaic system solar cells covert sun radiation to DC electricity. The provinces of Sindh , Punjab and Baluchistan and the Thar desert are specially suited for the utilization of solar energy. The solar statistics in Pakistan is highly favourable for energy generation. According to Fig2.5. the South western province offers perfect condition for utilization of solar energy. Since Pakistan locates near the equator so it has relatively high UV index as compared to other regions of the World. The solar characteristics graph in the Lahore region is shown in Fig. 2.6. Lahore city also offers suitable condition for harnessing solar energy The average sunlight hours lies between 7 to 8 hours per day which is approximately 2700 hours per annually. Graph in Fig. 3 shows the UV index of Lahore during a day time in the month of April. Usually the radiation intensity has its maximum value at noon .And value of solar radiation reaches its maximum value during the mid of summers. Chapter No 3 PHOTOVOLTAIC SYSTEM Contents: Introduction to solar panels History of PV system Photovoltaic Cell Architecture Implementation of PV system Battery 3.1 Introduction: Solar cell or photovoltaic cell is the device use to convert sunlight into electricity. It works on the basic principle of photovoltaic effect. 3.1.1 Photovoltaic effect When the photons of light falls on the semiconductor material. The photons try to knockout the electrons from the conduction bands. As the energy gap between valence and conduction band increases and when a sufficient amount of energy is projected by the light photons .the electrons knocked out from their respective atom and started to move freely. These free electrons moves towards n-side and holes created due to the deficiency of electrons in this region moves towards p-side to recombine themselves .This difference of potential allows the flow of current. The PV cell absorbs incoming light photons in p-type. This p-type layer should be synchronized in such a way that it can absorb as many as photons possible and set free as many as electrons possible, to make a radiant flow of current. In order to make and efficient flow solar cell , the surface of the cell should be kept rough to maximize the absorption of photons while reflection should be minimized in this way maximum conduction can be achieved 3.2 History The photovoltaic cell was developed in 1954 at Bell Laboratories. The first highly efficient solar cell was developed by Daryl Chapin, Calvin Souther Fuller and Gerald Pearson in year 1954 using a diffused silicon p-n junction. Firstly, cells were developed for toys and other minor uses, as the cost of their production was very high. Design of solar cells is improved day by day to utilize it for more applications. The applications for that solar panels are used are different and there are three levels of generation 3.2.1 First Generation: First generation cells are single junction devices and they have large area also having high quality with reduction in production cost 3.2.2 Second Generation: These materials are developed to address energy requirements and production cost. They reduce high temperature processing as vapour deposition, electroplating and Ultrasonic nozzles. 3.2.3 Third Generation: The aimof these technologies is to improve poor electrical performance of second generation technologies with low production cost. 3.3 Photovoltaic cell architecture A PV module consists of a silicon cell .These cell are connected in series or parallel manner in order to produce desired voltage and current .Inside a PV cell a circuit is present that is sealed from the envoi metal protective lamination .A PV panel consists of one or more modules joined together. Finally these panels are combined to make a single PV array which is a complete electricity producing unit. The performance of a PV array or its modules is rated by its maximum throughput power under S.T.C (Standard Test Condition).STC is defined as when a PV modulecell is operated under 25  °C (77F), with an incident solar irradiation of 1000 W/m2 with the spectral distribution of 1.5 air mass. These are the perfect condition for a PV module to operate in , but in actual the performance of a PV module is almost 80 to 90 percent of its STC rating. The operating lifetime of a PV module is between 20 to 30 years .Most of the manufactures offers warranty of 20 or more years of its DC output power to a sustainable amount .PV modules are also lice censed under (UL) qualification test for its reliability checks. 3.3.1 Types of Solar Cell Now a days there are various types of cell materials are developed. Multi junction PV cells are made in order to increase the cell efficiency while decreasing its volume and weight. But they are far more expensive then an ordinary silicon cells. The maximum efficiency of a PV cell is achieved almost to 30 percent by doping different intrinsic material together .Example of the exotic materials are Gallium arsenide and Indium serenade etc. However silicon cells are the most common and widely used PV cells. There are three major types of Silicon cell: Amorphous silicon solar Cell or Thin Film Cell Mono-crystalline Wafers Poly crystalline Cell Amorphous Silicon Solar Cell Amorphous technology is often seen in small devices, such as those in garden lamps or calculators, although amorphous panels are also increasingly used in other larger applications. They are formed by depositing a thin film of silicon onto a sheet of different material such as steel. The panel formed as one piece and each cell is not as visible as in other types. Efficiency of an amorphous solar cell is between 6 and 8%. The Lifetime of an amorphous cell is however shorter than that of crystalline cell. Amorphous cells have current density of about 15 mA/cm2,and the voltage of the cell without any connected load is 0.8 V, which is more as compared to crystalline cells. The efficiency of amorphous solar panels is low as those made from individual solar cells, although improvement has been made over recent years to a point where they can be use as a practical alternative to panels made with crystalline cells. Crystalline silicon solar cell The maximum efficiency of silicon solar cell is around 23 %, by adding some other semi-conductor materials it can increase up to 30 %, it depends on wavelength and semiconductor material being used. Crystalline solar cells are made up of wafers like stuff, which has about 0.3 mm thick and diameter of 10 to 15 cm. They can generate approximately 35 mA of current per cm2 of area at voltage of about 550 mV at full illumination. Crystalline solar cells can be wired in series or parallel to produce a solar panel. As each cell produces a voltage of between 0.5 and 0.6 Volts, 36 cells equipped in series are needed to produce an open-circuit voltage of about 20 Volts. This is enough to charge a 12 Volt battery under certain conditions. Although the efficiency of mono-crystalline cells is slightly higher as compared to that of a polycrystalline cells, but there are some practical difference in their performance. Crystalline cells have longer lifetime than that of amorphous solar cells. In our project we have used crystalline silicon cell because they are more efficient yet lesser in volume as compared to other types of solar cell, easily available in market and it is more economical. Polycrystalline Cell Polycrystalline silicon, also called poly silicon , consists of small silicon crystals of Polycrystalline cells which can be recognized by a visible grain, a â€Å"metal flake effect†. Semiconductor grade (solar grade) polycrystalline silicon then form to single crystal silicon, that is randomly associated crystallites of silicon in polycrystalline silicon are converted to a large single crystal[11]. Single crystal silicon is used in manufacture most of Si-based microelectronic devices. Polycrystalline silicon can be available up to 99.9999% pure. 3.4 Implementation of PV system: 3.4.1 Types of PV system There are three types of PV system being implemented around the world depending upon its function and integration with other energy resources. Standalone PV system Grid Connected PV system Hybrid Systems Stand alone PV system This type of system is usually present in our wrist watches, calculators and in space crafts also. These are dependent totally on its self generated power through solar panels and are directly used by DC loads or AC loads through inverter. In some system battery bank is also available to store the unused power to facilitate loads during night or under low light conditions. Further more a charge controller is also required in order to avoid battery from over charging and deep discharging. An inverter is also employed to provide power to AC loads. Grid Connected PV system In grid connected type the PV module has also backed up with WAPDA line or Grid connection. In this way if load is not getting enough power from the PV module or its battery, it will switch to the WAPDA line. This type of system is most commonly used around the World. Its applications are found mostly in small industries and homes. Hybrid System In this type the PV system is also integrated with two or more type of energy resources which may or may not be renewable resources .For example a wind turbine, steam engine or a small hydro plant etc. Other energy sources can also be integrated depending upon climate, geographical location of the place and several other perspectives. These systems are more appropriate for remote applications such as military installation, communication stations and rural villages. 3.4.2 Design Methodology Our project is based on a Hybrid System Consisting of a PV module and a windmill as two renewable energy resources, we have chosen these sources keeping in mind the climate and terrain of Lahore. 3.4.2.1 Components of Photovoltaic system: Solar cell Panel Inverter Charge Controller Batteries Integrator The major component of our system is the integrator .The function of this device is to integrate powers from both energy sources in a way that during operating time of the sources loads will directly get power from these sources and at night or the time when these sources are not operating loads are facilitated through battery banks. A controller is placed in the integrator circuit that is continuously monitoring the voltage level being provided by the sources. If the load can operate single handed by either of the sources the rely will build its connection from load with that source while the energy generated by the second source is being stored in the batteries .If both sources are required to derive a certain load rely opens up its connection of both sources with the load. When both sources are not providing a sufficient amount of power to the loads the controller will check whether batteries could provide sufficient amount of voltage so, it will start delivering power to load from the battery bank otherwise an LED blinks indicating that system cannot provide sufficient amount of power and will shutdown eventually. 3.4.2.2 Solar Panel Characteristics Table 3.1. Solar Panel Characteristics 3.4.2.3 Experimental Values This table shows the experimental results of output voltage and output current with respect to different timings and temperature variations in a day. Table 3.2. Solar Panel Throughput 3.4.2.4 Factors Affecting Output Power STC(Standard Test Condition) The electricity produce by solar cell is in DC, the DC output of solar panel is Tested under the STC that is Cell Temperature= 25 °C Solar Radiation Intensity= 1000 W/m2.. Air Mass= 1.5 These are the standard test condition at which Solar cell gives its Maximum Efficiency, in other conditions there is almost 10 to 15 percent of decrease in the efficiency of cell with respect to its STC rating. Temperature Output power of the solar cell is inversely proportion to the increase in temperature of the cell. For a crystalline module , a typical temperature reduction factor proposed by CEC is 89 percent which means †95 watts† module will typically provide 85 Watts (95watts*0.89=85watts) under sunlight conditions during summer seasons. Mismatch and wiring Losses The performance of the system can be affected due to mismatch of module connections. The loss in power also depends upon the increase in length of wire between source and load. As the distance between source and load increases losses also increases. Therefore the distance should be kept minimal to get maximum power throughput. DC To AC conversion Losses Since our system Prototype Modeling of Smart Grid Technology at Ciit Lahore Prototype Modeling of Smart Grid Technology at Ciit Lahore CHAPTER 1 INTRODUCTION TO SMART GRID 1.1 Introduction 1.1.1 Definition: The smart grid system is vast collection of technologies to provide an electricity network having the ability to solve the major issues related to reliability, cost effectiveness of electric power and decentralization or grid dependency The smart grid technology using renewable energy sources transferred electricity towards user side with the concept of integration of renewable energy sources. 1.1.2 Why Smart Grid Technology Adopted The demand of electricity is increased so much by the passage of time, which creates some major problems related to conventional electricity network. By 2020 energy demand will be doubled from the present demand [1]. Smart grid is the result of such efforts which are performed to make availability of electricity more reliable, economical and user friendly with the concept of decentralized network due to two way communication of electricity through network[2]. The Architectural model of a 21st century power system that interconnects everyone to affordable, abundant, clean, reliable, and efficient electricity anytime, anywhere. The purpose of Smart Grid is also to integrate several renewable resources with our national Grid and enhances the efficiency; reliability and thus providing a hassle free Transmission of electric power. It also contributes to reduce carbon emissions and providing a pollution free environment. 1.2 Back Ground 1.2.1 The European Development in the Area of Smart Grid In the next three decades European member state will expend about 750 billion in power infrastructure. This amount will expend on generation and networks. The European Technology plate form was developed in 2005 to solve the problems of Network Owners, operators and users[3]. 1.2.2 Smart Grid Development in USA In USA the Smart grid developments initiated during first Bush Administration[4]. In 2002 a DOE study describes the hundred of million of Dollar spent In US power systems on transmission practices and results a proposal of construction of transformed national electricity grid upto2030 providing the best and secure transmission of electricity[5]. 1.2.3 Smart Grid Development in Australia Under the Energy Transformed Flagship the Intelligent Grid Program was launched on 19 Aug, 2008. This Program researched in the fields of Control methodologies and economic modeling for distributed generation, Social impact of Intelligent grid, New housing developments and micro grids[6]. 1.3 Design Description 1.3.1 Features of Smart Grid The most important features of Smart Grid Technology are: Integration of Renewable Sources Battery Storage option Provide electric power to both AC and DC loads Advance Monitoring 1.3.2 Proposed Methodology Above figure shows prototype modeling of smart grid system at micro level along with the integration of several renewable energy resources such as small wind plant and solar panels. The charge controllers are special devices used for the purpose to control the abrupt change in voltage and stop the reverse flow of current towards PV or wind turbine systems, and also control the charging and discharging of batteries. An integrator is also one of the most important components of our project. The function of this device to integrate powers from both energy sources in a way that during operating time of the sources loads will directly get power from these sources and at night or the time when these sources are not operating loads are facilitated through battery banks. 1.4 Advantages of Smart Grid A. Motivates and Includes the Consumer Smart Grid is a end user device it motivates the consumer to generate a free source of electricity and to utilize it in household appliances when electricity from Grid is not available. B. Provides Power Quality for 21st Century Needs It provides power free of disturbance, sags, interruptions and spikes. C. Markets Opportunities Smart grid supports energy markets that encourage both investment and innovation. D. Operates Efficiently and Optimizes Assets Smart grid is easy to install infrastructure, transmit more power through existing systems and optimizes easily with present grid. E. Reduction in cost of power infrastructure When renewable energy sources are infused into the power grid, end-use demands can be adjusted to available power supplies. The ability to manage and reduce peak demands demolishes the need for costly peaking and â€Å"just-in-case† power infrastructure. F. Reduced use of polluting plants Some existing powerplants are not environment friendly which is adversely affecting the environment around us. Smart grid can produce pollution free generation of electricity. G. Clean power market During serious air pollution alerts, power plants and heavy industries sometimes shut down. Smart Grid ensures you clean power options. H. Energy storage Smart Grid is also equipped with battery backup options which not only stores energy also used as grid shock absorbers as well. I. Integrate able with Energy Resources and Storage Options The system also enables plug-and-play interconnection to multiple energy resources and storage devices (e.g. solar, wind, battery storage, etc.) 1.5 Brief Introduction to chapters Chapter 2 This chapter is a survey report about renewable energy sources. Also wind and solar characteristics of Pakistan are given in this chapter. Supply and Demand gap also discussed in this chapter. Chapter 3 This chapter is about PV system. Complete introduction and types of PV system are discussed also given here the architecture model of PV system with design description. And the experimental values also mentioned in this chapter. Chapter 4 This chapter defines the wind turbine specifications. Chapter starts from introduction then history discussed and after that design description is completely described. The experimental values also given in this chapter with advantages and drawbacks of wind turbine technology. Chapter 5 This chapter covers the remaining portion of smart grid technology. First of all integrator is discussed with design after that charge controller and power inverters also discussed with there design and circuitry. CHAPTER 2 LITERATURE SURVEY Contents: World Wide Survey of Renewable Energy Demand Supply Gap in Pakistan Depletion in Oil and Gas Energy Sources in Pakistan Wind Energy Solar Energy 2.1 World Wide Survey of Renewable Energy Renewable energy has an essential contribution in world energy generation. So many projects are under consideration regarding to renewable energy. 2.1.1 Global Status Report This report describes the market condition, investment and targets as well as policies. The report doesnt describe analysis or conclusions, though it reveals some extra ordinary facts regarding the renewable energy . By the end of 2005 only 45 countries were included in the achievement of renewable energy targets which are increased up to 76 in 2009. According to this report last year was the best era for renewable energy. Capacity in developing countries grew to 119GW, or 43% of the total. Including Pakistan and magnolia less or more than 8-0 countries has started plantation of wind power plants at commercial measures[7]. Some achievements of the year 2008 are: In just 1 year the capacity of solar photovoltaic plants tripled to 3 GW from 200 KW. Wind power by 29% and solar hot water increased by 15%. Grid connected photovoltaic systems increased up to 13GW, wind energy grew up to 250%, 121GW and total power generation capacity from renewable energy boost up to 75%. Spain becomes the super power in the field of grid connected PV systems with inclusion of 2.6GW. Germany also takes some handy steps and added 1,5GW in their system. Some other developed countries also provide large contributions like USA(3ooMW), Italy ( 300MW) , South Korea ( 270MW) and Japan (240MW) respectively . in total 16GW is the generation of solar including off-grid by 2009 worldwide. Table2.1 Energy Added and Exists in 2009-2010 2.2 Demand Supply gap in Pakistan If we give a look at demand supply graph then we will come to know that the difference between demand and supply is becoming wider and wider by the passage of time .the scenario in 3rd world countries is totally discriminated e.g. Pakistan. Needs are increasing exponentially but we are desperately lacking in finding out a good solution. if we have an eye view we may find 3 reasons of demand supply gap. Increase in prices of oil and gas , increase in population and increase in cost of energy . 2.2.1 Energy Demand With the increase in population energy requirements are also increasing. All the industry and the production of our daily need in dependent upon electricity . 2.2.2 Energy Supply Current eras total production of energy does not meet the current requirement of energy , though the end results are critical in the sense of increase in demand supply gap . Serious steps are needed to be 2.2.3 Energy cost If we have eye view on last few decades we will come to see the highlighted reduction in the reserves of oil and natural gas, which causes the increase in the cost of per unit production of electricity. This is also the reason of widening the demand supply gap. 2.2.4 Sustainability level The systems which are to be used for the generation of electricity must be stable, but unfortunately we have not surety of sustainability level of present system and the graph is gradually decreasing according to our present and future demands . This decrease in sustainability may overcome by using alternative techniques. 2.3 Depletion in oil and gas A large amount of electricity is being produced by fossil fuels and the present value of electricity generated by fossil fuels is increasing. According to the European energy commission and International energy the present reservoirs of oil and gas are not sufficient enough to meet the future requirements. so as the result after 10-12 years we have the depletion in the percentage of Oil using for the generation of electricity as shown in fig 2.2. As from the above it is obvious that from 1930 to one word till 2010 there is continuous growth in both oil and gas reserves but after 2010 there is deep declined. If the above graph follows the same pattern there is near future we will be totally dependent upon alternates of energy generation. 2.4 ENERGY SOURCES IN PAKISTAN The primary energy supplies today are not enough to meet even the present demand. More, a very large part of rural area does not have the electricity facilities because they are too expensive to be connected to the national grid. So, Pakistan like other developing countries in the region is facing a severe challenge in energy deficit. The development of renewable energy sources can play an important role in meeting such challenge. If we see around yourself Pakistan best suits for Solar (PV, thermal), water, wind and Wastes. These are the best renewable sources and Pakistan doesnt lack these. Pakistan can b benefited from these as substitute energy in areas where these renewable sources exist. Renewable energy Fossil fuels Nuclear power 2.4.1 Renewable energy It is energy which is produced by natural sources such as wind rain solar and geothermal heat. 2.4.1.1 Types of renewable Energy Wind Biomass Solar Wave and tidal Geothermal These all sources are best placed in Pakistan and we are not lacking in any at all , thus we can produce great amount of energy using these renewable sources , Capturing renewable energy by animals , plants and humans does not permanently deplete the resource. Fossil fuels are renewable but on a very long time-scale, are exploited at rates that may deplete these resources in the near future. 2.4.2 Fossil Fuels It includes natural gas, oil and coal . fossil fuels are lacking in Pakistan as well the world therefore renewable sources are needed to meet th essential needs 2.5 Wind Energy Wind energy is one of the best of renewable sources and probably suits Pakistan atmosphere at peak. As our project is related to wind energy as well. In Pakistan wind energy projects are working under the Pakistan Meteorological Dept with the financial collaboration of Ministry of Science and Technology which are accomplishing many such projects in Pakistan. About 3% of the total Pakistans land area is termed as good to excellent for utility scale production of electricity. Fig2.3. shows the variations of wind speeds in different areas of Pakistan Average wind speed in Lahore is 3m/s as shown in Fig.2.4 . Therefore for the prototype smart Grid system, average wind speed must exceeds the theoretical values as given in[10]. 2.6 Solar energy Its one of the types of renewable energies, as in our project we are working on solar energy, in photovoltaic system solar cells covert sun radiation to DC electricity. The provinces of Sindh , Punjab and Baluchistan and the Thar desert are specially suited for the utilization of solar energy. The solar statistics in Pakistan is highly favourable for energy generation. According to Fig2.5. the South western province offers perfect condition for utilization of solar energy. Since Pakistan locates near the equator so it has relatively high UV index as compared to other regions of the World. The solar characteristics graph in the Lahore region is shown in Fig. 2.6. Lahore city also offers suitable condition for harnessing solar energy The average sunlight hours lies between 7 to 8 hours per day which is approximately 2700 hours per annually. Graph in Fig. 3 shows the UV index of Lahore during a day time in the month of April. Usually the radiation intensity has its maximum value at noon .And value of solar radiation reaches its maximum value during the mid of summers. Chapter No 3 PHOTOVOLTAIC SYSTEM Contents: Introduction to solar panels History of PV system Photovoltaic Cell Architecture Implementation of PV system Battery 3.1 Introduction: Solar cell or photovoltaic cell is the device use to convert sunlight into electricity. It works on the basic principle of photovoltaic effect. 3.1.1 Photovoltaic effect When the photons of light falls on the semiconductor material. The photons try to knockout the electrons from the conduction bands. As the energy gap between valence and conduction band increases and when a sufficient amount of energy is projected by the light photons .the electrons knocked out from their respective atom and started to move freely. These free electrons moves towards n-side and holes created due to the deficiency of electrons in this region moves towards p-side to recombine themselves .This difference of potential allows the flow of current. The PV cell absorbs incoming light photons in p-type. This p-type layer should be synchronized in such a way that it can absorb as many as photons possible and set free as many as electrons possible, to make a radiant flow of current. In order to make and efficient flow solar cell , the surface of the cell should be kept rough to maximize the absorption of photons while reflection should be minimized in this way maximum conduction can be achieved 3.2 History The photovoltaic cell was developed in 1954 at Bell Laboratories. The first highly efficient solar cell was developed by Daryl Chapin, Calvin Souther Fuller and Gerald Pearson in year 1954 using a diffused silicon p-n junction. Firstly, cells were developed for toys and other minor uses, as the cost of their production was very high. Design of solar cells is improved day by day to utilize it for more applications. The applications for that solar panels are used are different and there are three levels of generation 3.2.1 First Generation: First generation cells are single junction devices and they have large area also having high quality with reduction in production cost 3.2.2 Second Generation: These materials are developed to address energy requirements and production cost. They reduce high temperature processing as vapour deposition, electroplating and Ultrasonic nozzles. 3.2.3 Third Generation: The aimof these technologies is to improve poor electrical performance of second generation technologies with low production cost. 3.3 Photovoltaic cell architecture A PV module consists of a silicon cell .These cell are connected in series or parallel manner in order to produce desired voltage and current .Inside a PV cell a circuit is present that is sealed from the envoi metal protective lamination .A PV panel consists of one or more modules joined together. Finally these panels are combined to make a single PV array which is a complete electricity producing unit. The performance of a PV array or its modules is rated by its maximum throughput power under S.T.C (Standard Test Condition).STC is defined as when a PV modulecell is operated under 25  °C (77F), with an incident solar irradiation of 1000 W/m2 with the spectral distribution of 1.5 air mass. These are the perfect condition for a PV module to operate in , but in actual the performance of a PV module is almost 80 to 90 percent of its STC rating. The operating lifetime of a PV module is between 20 to 30 years .Most of the manufactures offers warranty of 20 or more years of its DC output power to a sustainable amount .PV modules are also lice censed under (UL) qualification test for its reliability checks. 3.3.1 Types of Solar Cell Now a days there are various types of cell materials are developed. Multi junction PV cells are made in order to increase the cell efficiency while decreasing its volume and weight. But they are far more expensive then an ordinary silicon cells. The maximum efficiency of a PV cell is achieved almost to 30 percent by doping different intrinsic material together .Example of the exotic materials are Gallium arsenide and Indium serenade etc. However silicon cells are the most common and widely used PV cells. There are three major types of Silicon cell: Amorphous silicon solar Cell or Thin Film Cell Mono-crystalline Wafers Poly crystalline Cell Amorphous Silicon Solar Cell Amorphous technology is often seen in small devices, such as those in garden lamps or calculators, although amorphous panels are also increasingly used in other larger applications. They are formed by depositing a thin film of silicon onto a sheet of different material such as steel. The panel formed as one piece and each cell is not as visible as in other types. Efficiency of an amorphous solar cell is between 6 and 8%. The Lifetime of an amorphous cell is however shorter than that of crystalline cell. Amorphous cells have current density of about 15 mA/cm2,and the voltage of the cell without any connected load is 0.8 V, which is more as compared to crystalline cells. The efficiency of amorphous solar panels is low as those made from individual solar cells, although improvement has been made over recent years to a point where they can be use as a practical alternative to panels made with crystalline cells. Crystalline silicon solar cell The maximum efficiency of silicon solar cell is around 23 %, by adding some other semi-conductor materials it can increase up to 30 %, it depends on wavelength and semiconductor material being used. Crystalline solar cells are made up of wafers like stuff, which has about 0.3 mm thick and diameter of 10 to 15 cm. They can generate approximately 35 mA of current per cm2 of area at voltage of about 550 mV at full illumination. Crystalline solar cells can be wired in series or parallel to produce a solar panel. As each cell produces a voltage of between 0.5 and 0.6 Volts, 36 cells equipped in series are needed to produce an open-circuit voltage of about 20 Volts. This is enough to charge a 12 Volt battery under certain conditions. Although the efficiency of mono-crystalline cells is slightly higher as compared to that of a polycrystalline cells, but there are some practical difference in their performance. Crystalline cells have longer lifetime than that of amorphous solar cells. In our project we have used crystalline silicon cell because they are more efficient yet lesser in volume as compared to other types of solar cell, easily available in market and it is more economical. Polycrystalline Cell Polycrystalline silicon, also called poly silicon , consists of small silicon crystals of Polycrystalline cells which can be recognized by a visible grain, a â€Å"metal flake effect†. Semiconductor grade (solar grade) polycrystalline silicon then form to single crystal silicon, that is randomly associated crystallites of silicon in polycrystalline silicon are converted to a large single crystal[11]. Single crystal silicon is used in manufacture most of Si-based microelectronic devices. Polycrystalline silicon can be available up to 99.9999% pure. 3.4 Implementation of PV system: 3.4.1 Types of PV system There are three types of PV system being implemented around the world depending upon its function and integration with other energy resources. Standalone PV system Grid Connected PV system Hybrid Systems Stand alone PV system This type of system is usually present in our wrist watches, calculators and in space crafts also. These are dependent totally on its self generated power through solar panels and are directly used by DC loads or AC loads through inverter. In some system battery bank is also available to store the unused power to facilitate loads during night or under low light conditions. Further more a charge controller is also required in order to avoid battery from over charging and deep discharging. An inverter is also employed to provide power to AC loads. Grid Connected PV system In grid connected type the PV module has also backed up with WAPDA line or Grid connection. In this way if load is not getting enough power from the PV module or its battery, it will switch to the WAPDA line. This type of system is most commonly used around the World. Its applications are found mostly in small industries and homes. Hybrid System In this type the PV system is also integrated with two or more type of energy resources which may or may not be renewable resources .For example a wind turbine, steam engine or a small hydro plant etc. Other energy sources can also be integrated depending upon climate, geographical location of the place and several other perspectives. These systems are more appropriate for remote applications such as military installation, communication stations and rural villages. 3.4.2 Design Methodology Our project is based on a Hybrid System Consisting of a PV module and a windmill as two renewable energy resources, we have chosen these sources keeping in mind the climate and terrain of Lahore. 3.4.2.1 Components of Photovoltaic system: Solar cell Panel Inverter Charge Controller Batteries Integrator The major component of our system is the integrator .The function of this device is to integrate powers from both energy sources in a way that during operating time of the sources loads will directly get power from these sources and at night or the time when these sources are not operating loads are facilitated through battery banks. A controller is placed in the integrator circuit that is continuously monitoring the voltage level being provided by the sources. If the load can operate single handed by either of the sources the rely will build its connection from load with that source while the energy generated by the second source is being stored in the batteries .If both sources are required to derive a certain load rely opens up its connection of both sources with the load. When both sources are not providing a sufficient amount of power to the loads the controller will check whether batteries could provide sufficient amount of voltage so, it will start delivering power to load from the battery bank otherwise an LED blinks indicating that system cannot provide sufficient amount of power and will shutdown eventually. 3.4.2.2 Solar Panel Characteristics Table 3.1. Solar Panel Characteristics 3.4.2.3 Experimental Values This table shows the experimental results of output voltage and output current with respect to different timings and temperature variations in a day. Table 3.2. Solar Panel Throughput 3.4.2.4 Factors Affecting Output Power STC(Standard Test Condition) The electricity produce by solar cell is in DC, the DC output of solar panel is Tested under the STC that is Cell Temperature= 25 °C Solar Radiation Intensity= 1000 W/m2.. Air Mass= 1.5 These are the standard test condition at which Solar cell gives its Maximum Efficiency, in other conditions there is almost 10 to 15 percent of decrease in the efficiency of cell with respect to its STC rating. Temperature Output power of the solar cell is inversely proportion to the increase in temperature of the cell. For a crystalline module , a typical temperature reduction factor proposed by CEC is 89 percent which means †95 watts† module will typically provide 85 Watts (95watts*0.89=85watts) under sunlight conditions during summer seasons. Mismatch and wiring Losses The performance of the system can be affected due to mismatch of module connections. The loss in power also depends upon the increase in length of wire between source and load. As the distance between source and load increases losses also increases. Therefore the distance should be kept minimal to get maximum power throughput. DC To AC conversion Losses Since our system