Importance of Management and Leadership for an Organization Essay

â€Å"Both management and leadership are needed to make teams and organisations successful. Trying to decide which is more important is like trying to decide whether the right or left wing is more important to an airplane’s flight. I’ll take both please!† (Clemmer, 2005, as cited in McLean, 2005, p.16). The aim of this essay is to answer the age old question as to whether management or leadership is more important to an organisation. Organisations, ranging from professional to social, have been in existence for centuries and the sole purpose of any of these organisations is to grow and succeed. Thus, it is without a doubt that any organisation would accomplish much without a source of management or leadership. Even though it is evident that both management and leadership are both fundamental to a successful organisation, a distinction between the two should be made; although they are both similar in definition and function they do differ in importance in and effe ct on organisations. It is contended that the implementation of good management has a greater benefit, and therefore has more importance, to an organisation than leadership because: leading is considered as an element of the management function; to manage an organisation is to sustain it whereas to lead is to direct it but if there is no management, there is no entity, which leaves nothing for leaders to lead; leadership is focused on the management of people but an organisation is made up of more than just people; and also the value of leadership depends deeply on the structure and size of the organisation in question. The term ‘good’ is often used to describe something of quality and skill; thus, good management simply means management that is of the highest quality and is effective in producing the greatest results for an organisation: â€Å"Excellent results stem from a combination of skilled management, strategic thought and a good dose of general common sense† (Honig, 1999, as c ited in Samson & Daft, 2009, p.14). Every workplace organisation, whether large or small, has a manager or person in charge; whether the appointed person is able to implement good management depends on their skill and capability. Management is the major task of any manager – it involves the use of authority to coordinate and supervise the activities of others and to ensure that tasks are being completed in an effective and efficient manner. More importantly, managers must implement the four key elements of management: planning, organising, leading and controlling in order to attain organisational goals (Bartol, Tein, Matthews & Sharma, 2008). Organisational goals, whether they are sales targets or technological developments, are put in place by managers to set out the purpose and scope of an entity. Without such goals an organisation would cease to exist as there would be no direction to grow or move forward. The process of setting goals and deciding how to achieve them is the planning aspect of the management f unction (Bartol et al., 2008). If effective management is employed, there is a greater likelihood of managers establishing better organisational goals and contingency plans to ensure the future and success of the organisation; because it will not only be goal directed but will also be prepared for unforeseen circumstances that may arise, enabling them to react effectively and efficiently (Samson & Daft, 2009). Good management also assists in the successful implementation of action plans to achieve such organisational goals by organising, allocating, arranging and regulating activities and resources within the workplace (Bartol et al., 2008). Leading and managing are terms often used interchangeably because leading is described as a core activity of any manager (McLean, 2005). Leadership involves managers using influence to motivate employees to engage in plans that work towards achieving organisational goals (Bartol et al., 2008; Samson & Daft, 2009). This suggests that leadership is intertwined within the task of management. So if good management practices are in place in an organisation, leadership is expected to follow in existence. However, the mistake should not be made to describe leadership and management as the same thing – â€Å"leadership is an element of management but is not the same thing† (Lyson cited in Robinson, 1999, p.20). To say that leading and managing is the same would be to ultimately say planning and managing is the same thing; nevertheless, planning is only a function of management, as is leading. Therefore, if an organisation were given a choice between employing either a good manager or a good leader, the good manager would be the safer bet because it would be expected that a good manager encompasses good leadership. Furthermore, the importance of and need for management in a workplace is supported by the idea that organisations are established to succeed and innovate and such is not possib le without the planning and setting of organisational goals and the attainment of these goals by organising, leading and controlling. Once good management is in practice, the four key functions, including leadership, are sure to be carried out effectively and efficiently. The profitability of an organisation is not a result of good management on its own; however, management is a major contributing factor. Every organisation is goal directed, and as ascribed earlier, management is the attainment of organisational goals with the use of planning, organising, leading and controlling (Bartol et al., 2008). The organisational goals act as an entity’s reason for existence, it strives to achieve these goals in order to grow and accomplish. Therefore it can be concluded that the focus of any organisation is to grow and move forward rather than to remain stationary and unproductive and thus there is an assumption that the life of the entity will be on going. The survival of an organisation depends on the ability of the manager to sustain it by utilizing the effective skills of good management. The manager is responsible for making informed decisions about the welfare of the organisation along with the collective resources owned. These decisions aim to not only achieve goals but to sustain and up hold the organisation to ensure its survival in today’s dynamic environment. Thus there is emphasis on an organisation to have good management in order for the entity to survive, which also acts to highlight the importance of effective management. On the other hand, leadership is implemented as the principle dynamic force to guide and motivate subordinates to attain organisational objectives (Burns, 1978, as cited in Shamas & Ofori, 2008) and ultimately bring change to an organisation as more goals are satisfied. If effective leadership is exercised within an organisation, innovation, change and transformation are easily attainable (Bartol et al., 2008). Alternatively, Slap (2010) asserts that although leadership profits and adds value to an organisation by way of innovation, it is not the purpose of introducing leadership. Rather, leadership is used as a tool to share and express important values and experiences to employees in an attempt to bring about an improved change in the workplace environment and in the attitudes held by employees. Leadership in this sense allows leaders to be more easily respected upon employees because they feel more connected with the leader, which also gives the leader greater influence to motivate and encourage hard work. Nevertheless, whichever way leadership is regarded the end result remains the same: innovation of an organisation by way of providing direction to accomplish objectives (Bass, 1990, as cited in Shamas & Ofori, 2008). â€Å"A leader innovates; a manager maintains† (Hollingsworth, as cited in Robinson, 1999, p.20); without effective management to keep the organisation alive it is likely to fail, and consequently leaders will be left taskless – there will be no goals left to achieve, no employees left to motivate and ultimately no organisation left to innovate. This strongly recognises the importance of good management and the added advantage it brings to an organisation; without good management, good leadership will be ineffective and futile. On the contrary, leadership is often considered as a much more pleasant concept in comparison to that of management: â€Å"leaders are seen as charismatic and often are admired and held in high esteem, managers frequently are thought of as the organization’s taskmasters with a whip in one hand and a bullhorn for screaming out orders in the other hand† (Kotterman, 2006, p. 13). Zaleznik (1977) and Burns (1978), as cited in Nienaber ( 2010), portray management as â€Å"mundane, uninspiring and tactical by nature† and in addition, asserting that management alone cannot guarantee the success of an organisation. Consequently, it has been argued that leadership should be favoured at the expense of management in a successful organisation (Spurgeon & Cragg, 2007, as cited in Nienaber, 2010). One of the most important aspects of leadership is the leaders’ followers (Bennis, 1989, as cited in Shamas & Ofori, 2008). Iscoe (2005, as cited in McLean, 2005) argues that people would rather follow a leader than a manger, if given the option; this is not surprising as leaders tend to focus more on the people rather than any other aspect of the organisation because in order for a leader to effectively influence and lead others they must work to gain the trust and respect of their followers. Thus, there are various positive reasons as to why leaders are commended over managers among the people, some of which are highlighted in Maccoby (2000), as cited in Shamas & Ofori (2008)., p.63: â€Å"hope of success, trust in the leader, excitement about a project or mission, or the opportunity to stretch on eself to the limit†. Unlike management, leadership is not an assigned role or title placed on someone. The task of managing a corporation is specific to the teams of managers who are formally appointed the position whereas leaders can stem from any sector of an organisation. Therefore, managers are associated with formal authority (McLean, 2005) which means people secondary to them in the organisational hierarchy may view managers as intimidating and unapproachable which further emphasises why leaders are more favourable in an organisation. Yet in reality, success isn’t easily achievable and so in order to attain it, compromise must occur. An organisation cannot survive on leadership alone, because although a leader may possess few managerial qualities, they are unable to satisfy all the tasks of a manager. Nevertheless, as every workplace organisation involves employees, it is evident that leadership is a fundamental aspect of any entity because leaders are responsible for managing the people. However, organisations are about more than just the workers, which illustrates the prevailing importance of managers to control all the remaining aspects of an organisation such as goals, plans, assets and resources. As previously mentioned, every organisation involves employees. The McDonalds restaurant is the largest fast food chain in the world, operating over 30,000 franchises in over 100 countries worldwide. It was revealed in the 2010 McDonalds annual report that the organisation employs over 1.7 million workers from all age groups across their stores. In enormous corporations such as McDonalds, with such a vast number of employees, it is expected that both leaders and managers are equally essential in running the organisation because there is an equally enormous number of duties to be satisfied. However, in contrast, a small, family-owned, local milk bar may only have, at most, three employees. Clearly leadership is not as important in an organisation of three people in comparison to that of one with over one million people, simply because such a minute organisation does not require such a deep extent of leadership. However, it is not to say that the manager of the milk bar should not possess leadership qualities because even though there are very few employees, motivation and communication of direction must still take place (Nienaber, 2010) in order for the business to thrive. Although both management and leadership are both important functions of an organisation, a number of moderating factors determine the effectiveness and importance of leadership including size of the organisation (Fiedler, 1967; Gardner et al., 2005, as cited in Shamas and Ofori, 2008) whereas, regardless of size or type, every organisation needs a person in charge. In other words, management is important and is needed in every organisation but the extent to which leadership is needed varies among different organisations. Conclusively, although leadership and management are functions that must be applied to any successful organisation, effective management has prevailing importance. Theoretically, management is defined as the attainment of organisational goals through planning, organising, leading and controlling (Bartol et al., 2008). Thus it is clear that leadership is encompassed in the task of management so if a manager can perform their task effectively, leadership is likely to follow. However the reverse is not true, as to lead is to influence, direct and motivate others to achieve goals, not to control so management is not a facet of leadership. Management is often considered as a control mechanism in an organisation which some tend to find intimidating and off putting which is why leadership is usually the preferred, softer option (Kotterman, 2006). However, the focus of leaders is often on the people but people are obviously just one aspect of an organisation which is why managers are more important because there are so many other features of an organisation to be controlled. By influencing people to complete tasks effectively and efficiently, leaders bring about change and innovation in an organisation. However, without management acting to sustain organisations in today’s turbulent environment, there is simply no place left for a leader (Hollingsworth, as cited in Robinson, 1999). Finally, the essentiality of leadership in an organisation depends greatly on the size and type of a corporation whereas management is equally important in any and all organisations. These points clearly demonstrate that good management is more important to a successfully running organisation than good leadership. All in all, if an organisation were given an ultimatum between a good manager and a good leader, the good manager is likely to prevail.

Consult

Consult Patient Name: Adela Torres Hospital ID: 13246 Consultant: Sachi Kato, M. D. , Dermatology Requesting Physician: Leon Medina, M. D. , Internal Medicine Date of Consult: 06/23/2011 Reason for Consultation: Please evaluate stomatitis, possibly methotrexate related. HISTORY OF PRESENT ILLNESS: The patient is a very pleasant 57-year old female, a native of Cuba, being seen for evaluation and treatment for sores in her mouth that she has had for the last 10-12 days. The patient has a long history of severe and debilitating rheumatoid arthritis for which she has had numerous treatments, but over the past ten years she has been treated with methotrexate quite successfully. Her dosage has varied somewhere between 20 and 25 mg per week. About the beginning of this year, her dosage was decreased from 25 mg to 20 mg, but because of a flare of the rheumatoid arthritis, it was increased to 22. 5 mg per week. She has had no problems with methotrexate as far as she knows. She also took an NSAID about a month ago that was recently discontinued because of the ulcerations in her mouth. About two weeks ago, just about the time the stomatitis began, she was placed on an antibiotic for suspected upper respiratory infection. She does not remember the name of the antibiotic, although she claims she remembers taking this type of medication in the past without any problems. She was on that medication, three pills a day, for three to four days. She notes no other problems with her skin. She remembers no allergic reactions to medication. She has no previous history of fever blisters. (Continued) CONSULT Patient Name: Hospital ID:13246 Page 2 PHYSICAL EXAMINATION: Reveals superficial erosions along the lips, particularly the lower lips, the posterior buccal mucosa, along the sides of the tongue, and also some superficial erosions along the upper and lower gingiva. Her posterior pharynx was difficult to visualize, but I saw no erosions on the areas today. There did however appear to be one small erosion on the soft palate. Examination of the rest of her skin revealed no areas of dermatitis or blistering. There were some macular hyperpigmentation on the right arm where she has had a previous burn, plus the deformities from her rheumatoid arthritis on her hands and feet, as well as scars on her knees from total joint replacement surgeries. IMPRESSION: Erosive stomatitis, probably secondary to methotrexate. Even though the medication has been used for ten years without any problems, methotrexate may produce an erosive stomatitis and enteritis after such a use. The patient also may have an enteritis that at this point may have become more quiescent, as she notes that she did have some diarrhea about the time her mouth problem developed. She has had no diarrhea today, however. She has noted no blood in her stools and has had no episodes of nausea or vomiting. I’m not as familiar with the NSAID causing an erosive stomatitis. I understand that it can cause gastrointestinal upset, but given the choice between the two, I would think the methotrexate is the most likely etiology for the stomatitis. RECOMMENDED THERAPY: I agree with your therapeutic regimen regarding this condition with the use of prednisone and folic acid. I also agree that the methotrexate must be discontinued in order to produce a resolution of this patients’ skin problem. However, in my experience, this stomatitis may take a number of weeks to go away completely if a patient has been on methotrexate, for an extended period of time, because the medication is stored within the liver and in fatty tissue. Topically I have prescribed Lidex gel, which I find works extremely well in stomatitis conditions. It can be applied t. i. d. (Continued) CONSULTATION Patient Name: Hospital ID:13246 Page 3 Thank you very much for allowing me to share in the care of this pleasant patient. I will follow her with you as needed. _________________________ Sachi Kato, M. D. SK:YM D:06/23/2011 T:06/23/2011

A Job Costing System Accumulates Economics Essay

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Hate CrimeAgainst Asian Americans Essay Example | Topics and Well Written Essays - 1750 words

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A Portfolio in Entrepreneurship and Entrepreneurial Characteristics Essay

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Super Bikes Essay Example for Free

Super Bikes Essay John Jones built an excellent business that named JJ Motorbikes five years ago. John Jones uses his initial of his name, JJ, as a brand for his business. Ten years before, he had been the world champion in the â€Å"Super Bikes†. John Jones. By changing an old car showroom, John Jones built a successful business. On the other hand, this business has getting larger and become a new â€Å"Bike City†. Lying on two miles from the near place, this place is being built neighboring to the main motorway on the outskirts of the city. According to the plan, the place and its all the new facilities are being prepared to open in June 2006. II Situation Analysis Because of the good standing and strategic location of JJ Motorbikes, this place has grow to be a reliable place to buy motorbikes, and all at once become a place for the bikers to gather and chitchat in the biking community. The small coffee machine that placed outside of the service centre becomes a place for bikers to meet fellow riders to have a chat and they can browse some accessories in the shop during that time. Become part of this business, the accessory shop is one of the main profit midpoints, although the bikers do not always buy something there. Besides selling good and new motorbikes, JJ Motorbikes is also selling second-hand motorbikes, exclusive with a JJ Motorbikes guarantee. To create good marketing relationship with the bikers that enthusiast in this pastime, JJ Motorbikes must know how to deal this business well and keep it glowing. JJ Motorbikes have to win the customers by making a selection of the newest and most exciting performance bikes. For example, nowadays, customers appreciate the small display of classic motorbikes. These experiences have been built into the plan for the new JJ Motorbikes. II. 1 Macro environment (including PEST Analysis) JJ Motorbikes should make helpful and facilitating macro-environment to achieve the success of their business activity. The place of JJ Motorbikes needs a government and populations that understand well about the enthusiasm of this hobby as a positive activity and key indicator of local development to provide such an environment. JJ Motorbikes need to plan and apply a promotion to create public responsiveness. The highlighting of the promotion should be focus to the customer’s interest. JJ Motorbikes can use radio, television, and newspapers to emphasize the good side of the activity and remind about the negative consequences that identified in customer’s consideration. JJ Motorbikes should make specific activities that connected to the activity within the program they are appraising. Political factors can have a direct impact on the way business operates. Decisions made by government affect our every day lives and can come in the form of policy or legislation (Quick MBA. 2006). In a global industry is an industry, where a company’s strategic position is influenced by their global position as a whole (Kotler, 2000). The political decision in the area is having an impact on JJ Motorbikes businesses. JJ Motorbikes businesses are affected by economical factors too. Interest rate policy and fiscal policy will have to be set as a result. Within the area, the climate of the economy says how consumer may behave within society. Whether an economy is in an explosion, depression or recovery will also affect JJ Motorbikes consumer’s confidence and behavior. Inside people forces such as family, friends, and media affect our attitude, interest, and opinions. These forces figure who we are as people and the way we behave and what we ultimately purchase. Within the people near JJ Motorbikes, attitudes are changing towards their activity of hobby. Consequently, JJ Motorbikes is seeing an increase in the quantity of people joining this interest activity. Changes in technology are changing the way of JJ Motorbikes operates. The Internet is having a deep impact on the marketing mix strategy of JJ Motorbikes. Consumers of JJ Motorbikes can now shop 24 hours a day comfortably from their homes. II. 2 Micro environment JJ Motorbikes should strengthen community involvement by provide a club society in groups to facilitate them to organize the activity better. They also need to make use of local cultural practices whenever possible. JJ Motorbikes can also build in social appreciation programs to give confidence and support individual and community initiatives. JJ Motorbikes have to make other components of the activity program to make sure that every families and communities are able to participate. They may need also to seek additional financial support for this, and with the intention of reach remote, isolated communities and households. II. 2. 1 Competition Differentiation is very important in JJ Motorbikes marketing. JJ Motorbikes have to offer better than their competitors do. They need to continue this differentiation over a period from their competitors. High-grade and in-depth-processed motorbikes, which can compete with international fashionable styles, will have broader market. JJ Motorbikes should redirect their marketing focus to towns and countryside. They started to establish and improve sales and service network in rural areas step by step. II. 2. 2 Market Demographics Demographic segmentation divides the market into groups founded on demographic variables including age, gender, family size, and life cycle. Nevertheless, JJ Motorbikes have set their highlights definitely at the other end of the scale, on the kids and teens market, as they increasingly segment products across all age groups. II. 2. 3 Market Needs This new product of JJ Motorbikes was designed from the ground up to take advantage of motorbike technology. It includes a patented and high performance suspension. The products of JJ Motorbikes are an innovative combination of performance and quality. The design flexibility incorporated into the body of the products allows the motorbike to be customized, branded, and built for specific market needs. This includes hobby, recreation and resorts, security, as well as many others. JJ Motorbikes labeling and packaging may have to alter to comply with the country’s labeling or environmental regulations. Presentation of their product is very important particularly for consumer goods. II. 2. 4 Market Trends In view of the fact that purchasing power in this areas take shape by stages, the demand volume for JJ motorbikes will maintain at about a half of the total output in the future year plan period. In addition, the market of JJ motorbikes will be gradually standardized and related. JJ motorbikes will pay more attention to technological renovation and own products development in the coming several years. The JJ motorbikes’s record of accomplishment and prolonged existence happens from its successful design of innovative consumer products for markets. Consumer can trust in a design, coupled with eagerly commercial awareness of global market trends. II. 3 SWOT II. 3. 1 Strengths Strength is one component of internal analysis. The component describes any resources and capabilities that support a company to achieve its competitive advantage such as patents, excellent reputation, low cost structure and many more (Tutor 2U, 2006). Concerning the JJ Motorbikes the strengths are: Good basic and support services provided by the government Conformity Control In place to handle commercial side II. 3. 2 Weaknesses The second internal factor is Weaknesses. This is simply in contrast to the strength in which the absence of specific strength might be considered as the weaknesses of the company (Tutor 2U, 2006). Concerning the JJ Motorbikes the weaknesses are: Main structure does not feed effective information Ideas good at start Intent/reasoning not always communicated to all customers Poorest families not reached

Short Duration Voltage Variations Engineering Essay

Short Duration Voltage Variations Engineering Essay For long time, the main concern of consumers in power system was the reliability of supply which means that the continuity of electricity. However, it is not only the reliability that consumers want these days, quality of electricity supply is also very important for consumers. The term, electric power quality, broadly refers to maintaining a nearly sinusoidal bus voltage at specified magnitude and frequency in an uninterrupted manner from the reliability point of view. For a well-designed generating plant, which generates voltages almost perfectly sinusoidal at rated magnitude and frequency, power quality problems start with transmission system and stay applicable until end users in distribution system. The power quality in power system are categorized as temporary phenomena and steady state phenomena The power qualities are characterized in the power system by different terms suggested by Padiyar, K.R.,(2007) under these two categorizes are summarized as follows: 1.2. TEMPORARY PHENOMENA Transients: Transients are short-duration, high-amplitude pulses superimposed on a normal voltage waveform. They can vary widely from twice the normal voltage to several thousand volts and last from less than a microsecond up to a few hundredths of a second. Transients can be classified as impulsive transients and oscillatory transients. Impulse transients are mainly caused by the impact of lightning strikes to the power system. The typical causes of oscillatory transients are capacitor or transformer energization and converter switching. While impulsive transient is a sudden and has non-power frequency change in voltage and current with a fast rise and decaying time, oscillatory transient has one or more sinusoidal components with frequencies in the range from power frequency (50Hz) to 500 kHz and decays in time. Short Duration Voltage Variations: Short Duration Voltage Variations are defined as the variations in the supply voltage for durations not exceeding one minute and caused by faults, energization of large loads that having large inrush currents or rapidly varying large reactive power demands of the loads. These are further classified as voltage sags, voltage swells and interruption. Long Duration Voltage Variations: Long Duration Voltage Variations are defined as the rms variations in the supply voltage at fundamental frequency for exceeding one minute, such as overvoltage, under voltage and sustained interruption. The causes of overvoltage (or under voltage) may be the switching off (or on) of a large load having poor power factor, or the energization of a large capacitor bank or reactors. Voltage Unbalance: Voltage Unbalance is the condition in which three phase voltages of the supply are not equal in magnitude and may not be equally displaced in time. The primary causes are the single phase loads, open circuit in any one phase of a balanced 3phase loads and unequal loads connected in each phase of a poly phase systems. Waveform Distortion: Waveform Distortion is defined as steady-state deviation in the voltage or current waveform from an ideal sine wave. These distortions are classified as dc-offset, harmonics and notching. The causes of dc offsets in power systems are geomagnetic disturbances, especially at higher altitudes and half-wave rectifications. These may increase the peak value of the flux in the transformer, pushing it into saturation and resulting in heating in the transformer. Power electronics equipments like UPS, adjustable speed drives injects harmonics in the power systems. Notching is a periodic voltage distortion due to the operation of power converters when current commutates from one phase to another. Voltage Fluctuations: Voltage Fluctuations are defined as the rapid, systematic and random variations in the supply voltage. This is also called as Voltage Flicker and is caused by rapid and large variations in current magnitude of loads having poor power factor such as arc furnaces. These large variations in load current causes severe dip in the supply voltage unless the supply bus is very stiff. Power Frequency Variations: Power Frequency Variations are the variations that are caused by rapid changes in the load connected to the system, such as the operation of draglines connected to a comparatively low inertia system. Since the frequency is directly related to rotational speeds of the generators, large variations in power frequency may reduce the life span of turbine blades on the shaft connected to the generator. Although these above terms are not new, customer awareness on power quality has increased. In recent times, power quality issues and custom solutions have generated tremendous amount of interest among power system authorities and engineers. International Electro technical Commission (IEC) and Institute of Electrical and Electronics Engineers (IEEE) have proposed various standards on power quality. This led to more stringent regulations and limits imposed by electricity authorities although they differ from one country to another in a limited extend. Although terms of power quality are valid for transmission and distribution systems, their approach to power quality has different concerns. An engineer of transmission system deals with the control of active and reactive power flow in order to maximize both the loading capability and stability limits of the transmission system. On the other hand, an engineer of distribution system deals with load compensation either by means of individua l or group compensation in order to maintain power quality for each load in the distribution system (Sankaran.C, 2002, John J.Paserba et al, 2000). The utilization of power electronic based power conditioning devices brought the solution for these power quality issues in distribution system. 1.2 FACTS CONTROLLERS In recent years, many multinational software companies and automobile industries established their units in India. In turn, it initiates many other small industries to supply their needs. The growth of these industries is found to be very fast and it pollutes the power system by injecting harmonics into it. These industries need electrical power for its operation. Establishing new power generation unit is not so easy in India due to the initial cost. In addition it has many constraints like fuel constraints, political constraints, economical constraints and technological constraints. This makes to think an alternate solution for the scarcity of power by improving the quality of existing power. Reducing the wastages and improving the quality of available power is equivalent to generation of power. To improve the reliability and deliver energy at the lowest possible cost with improved power quality, power supply industries require increased flexibility in the transmission and in the di stribution systems. The power industries are handling these challenges with the power electronics based technology of Flexible AC Transmission systems (FACTS). This term covers the whole family of power electronic controllers, some of which may have achieved maturity within the industries, while some others are yet in the design stage. As Higorani et al (1999) described the various VSC based FACTS controllers are available for power quality improvement. FACTs has been defined by the IEEE as follows. Power electronics based system and other static equipment that provide control of one or more AC transmission system parameters to enhance controllability and increase power transfer capability. In general, FACTs controllers can be classified as follows Series Controllers Shunt Controllers Combined series and shunt Controllers Combined shunt and series Controllers Based on the power electronic devices used in the controller, the FACTS controllers can be classified as: (A) Variable impedance type FACTS Controller (B) Voltage Source Converter (VSC) based FACTS Controller The variable impedance type controllers include: (i) Shunt connected- Static Var Compensator (SVC) (ii) Series Connected-Thyristors Controlled Series Capacitor or Compensator (TCSC) (iii) Combined shunt and series connected Thyristors Controlled Phase Shifting Transformer (TCPST) of Static PST The VSC based FACTS controllers are: (i) Static synchronous Compensator (STATCOM) (shunt connected) (ii) Static Synchronous Series Compensator (SSSC) (series connected) (iii) Interline Power Flow Controller (IPFC) (combined series-series) (iv) Unified Power Flow Controller (UPFC) (combined shunt-series) The VSC based FACTS controllers have several advantages over the variable impedance type. VSC based STATCOM response is much faster than a variable impedance type SVC. STATCOM requires less space than SVC for same rating. It can supply required reactive power even at low values of the bus voltage. In addition, a STATCOM can supply active power if it has an energy source or large energy storage at its DC terminals. It can also be designed to have in built, short-term overload capability. The only drawback with VSC based controllers is that it requires use of self-commutating power semiconductor switches such as Gate Turn-off (GTO) thyristors, Insulated Gate Bipolar Transistors (IGBT), Integrated Gate Commutated Thyristors (IGCT). However, the VSC based controllers build with emerging power semiconductor devices using silicon carbide technology will lead to the wide spread use of VSC based controllers in future. Among FACTs controllers, the shunt controllers have shown feasibility in terms of cost effectiveness in a wide range of problem solving from transmission to distribution levels. For more than a decade, it has been recognized that the transmittable power through transmission lines could be increased and the voltage profile along the transmission line could be controlled by an appropriate amount of compensated reactive power. Moreover, the shunt controller can improve transient stability and can damp power oscillation during a post-fault event. Using a high speed power converter, the shunt controller can further alleviate the flicker problem caused by electrical arc furnaces. .1 SERIES CONTROLLERS Static synchronous series compensator (SSSC) is series reactive power compensation devices used in transmission level. The series compensation is obtained by controlling the equivalent impedance of a transmission line, to regulate the power flow through the line. The SSSC can be considered as a static synchronous generator that acts as a series compensator whose output voltage is fully controllable, independent of line current and kept in quadrature with it, with the aim of increasing or decreasing the voltage drop across the line, thus controlling the power flow. The basic structure of a SSSC connected with the network is shown in Figure 1.1. Line C VSC TF Figure.1.1 Series Connected SSSC The SSSC injects a voltage Vq in quadrature with line current. It can provide either capacitive compensation if Vq leads the line current by à Ã¢â€š ¬/2 rad or inductive compensation if Vq lags line current by à Ã¢â€š ¬/2 rad. A relatively small active power exchange is required to compensate for coupling transformer and switching losses, and maintain the required DC voltage. 1.2.2 SHUNT CONTROLLERS STATCOM The schematic diagram of a STATCOM is shown in Figure.1.2. In principle, all shunt type controllers inject additional current into the system at the point of common coupling (PCC). VSC that uses charged capacitors as the input dc source and produces a 3à Ã¢â‚¬ ¢ ac voltage output in synchronism and in phase with the ac systems. The converter is connected in shunt to a bus by means of the impedance of a coupling transformer. A control on the output voltage of this converter is either lower or higher than the connecting bus voltage, controls the reactive power drawn from or supplied to the connected bus. The impedance of the shunt controller, which is connected to the line causes a variable current to flow and hence represents an injection of current into the line. As long as the injected current is in phase quadrature with the line voltage, the shunt controller can either supply or consume variable reactive power. Line C VSC TF Figure.1.2 Shunt Connected STATCOM A six pulse Voltage Source Converter (VSC) with suitable controller, the phase angle and the magnitude of the AC voltage injected by the VSC can be controlled. The Phase Lock Loop (PLL) ensures that the sinusoidal component of the injected voltage is synchronized (matching in frequency and required phase angle) with the AC bus voltage to which VSC is connected through a coupling inductor. Often, the leakage impedance of the interconnecting transformer serves as the coupling inductor. It also serves as harmonic filter for the voltage injected by the VSC. The injection of harmonic voltages can also be minimized by multi-pulse (12, 24 or 48), and/or multilevel convertors. At low power levels, the pulse width modulation (PWM) technique is sufficient to control the magnitude of the fundamental component of the injected voltage. The high voltage IGBT devices can be switched at high frequency (2 kHz and above) of sinusoidal modulation enables the use of simple LC-low pass filters to reduce harmonic components. 1.2.3 COMBINED SHUNT AND SERIES CONTROLLERS (a). Unified Power Flow Controller (UPFC): The Unified Power Flow Controller (UPFC) is the most versatile FACTS controller for the regulation of voltage and power flow in a transmission line. It consists of two-voltage source converters (VSC) in which one connected in shunt and the other one connected in series. The DC capacitors of the two converters are connected as shown in Figure.1.3. the shunt connected converters work as STATCOM and controls the reactive current injected in to the line. Series connected converter work as SSSC and control reactive voltage injected series with the line. The combination of these two converters enables to exchange active power flow between the two converters. The series connected converter can supply or absorb the active power. VSC Line VSC C STATCOM SSSC Figure 1.3 Schematic of UPFC The controllable power source on the DC side of the series connected converter, results in the control of both real and reactive power flow in the line at the receiving end of the line. The shunt-connected converter provides the required reactive power and injects the reactive current at the converter bus. Thus, a UPFC has 3 degrees of freedom whereas other FACTS controllers have only one degree of freedom or control variable. The concept of combining two or more converters can be extended to provide flexibility and additional degrees of freedom. A Generalized UPFC refers to the use of three or more converters out of which one shunt connected while the remaining converters are series connected (b). Interline Power Flow Controller (IPFC): An Interline Power Flow Controller (IPFC) refers to the configuration of two or more series connected voltage source converters sharing a common DC bus as shown in Figure 1.4. The Interline Power Flow Controller (IPFC) is used reactive (series) compensation of each individual line. In addition to this, the IPFC is capable of exchanging real power between the two or more compensated lines. To achieve this AC side of the series connected VSCs are connected in different lines and on the DC side, all the DC capacitors of individual converters are connected in parallel. This is possible because all the series converters are located inside the substation in close proximity. VSC1 Line-1 VSC2 C SSSC1 SSSC-2 Line-2 Figure 1.4 Schematic of IPFC for two transmission line using two VSC An IPFC is similar to a UPFC in that the magnitude and phase angle of the injected voltage in the line (main system) can be controlled by exchanging real power with the second line (support system) in which a series converter is connected. The basic difference with a UPFC is that the support system in the UPFC is the shunt converter instead of a series converter. The series converter associated with the main system of one IPFC is termed as the master converter while the series converter associated with the support system is termed as the slave converter. The master converter controls both active and reactive voltage within limits while the slave converter controls the DC voltage across the capacitor and the reactive voltage magnitude. 1.3 APPLICATION FACTS CONTROLLERS IN DISTRIBUTION SYSTEMS Although the concept of FACTS was developed originally for transmission network, later on this has been extended since last decade for improvement of Power Quality (PQ) in distribution systems operating at low or medium voltages. In the early days, the power quality referred primarily to the uninterrupted power supply at acceptable voltage and frequency. In the modern context, power quality problem is defined as any problem manifested in voltage, current or frequency deviations that result in failure or malfunctioning of customer equipment. However, the increase in the use of computers, microprocessors and power electronic systems has resulted in power quality issues involving transient disturbances in voltage magnitude, waveform and frequency. The nonlinear loads not only cause power quality (PQ) problems but also very sensitive to the voltage deviations. The unbalanced load in the distribution system like single-phase railway loading creates power quality problem at the distributio n level. The highly inductive load like arc furnace is a major source of creating power quality problems in distribution network. Hingorani et al (1999), was the first to propose FACTS controllers for improving power quality in distribution systems. They have called it as Custom Power Devices. These are based on VSC with appropriate controller. Based on the types of connection with the distribution network the custom power devices classifications are given below; 1. Series connected Dynamic Voltage Restorer (DVR) 2. Shunt connected Distribution STATCOM (DSTATCOM) 3. Combined shunt and series connected Unified Power Quality Conditioner (UPQC). The Dynamic Voltage Restorer (DVR) is a series connected custom power device in the distribution systems. The DVR is analogous to a SSSC in the transmission system. The main function of a DVR is to reduce voltage sags seen by sensitive loads such as semiconductor manufacturing plant or a paper mill. They have been designed to compensate three phase voltage sags up to 35% for duration of time less than half a second (depending on the requirement). If the voltage sag occurs only in one phase as in the case of Single Line to Ground (SLG) faults then the DVR may be designed to provide compensation for sags exceeding 50%. The capacitor is designed to store energy in the range of 0.2 to 0.4 MJ per MW of load served. A DVR is connected in series with the distribution feeder through a transformer. The low voltage winding of the transformer is connected to the converter. If a DVR is used mainly to regulate the voltage at the load bus, it injects a series voltage of the required magnitude if i t detects a voltage sag else remains in stand-by mode during which the converter is bypassed or it is not injecting voltage. It is necessary to protect the DVR against the fault currents as in the case of a SSSC. A DVR with IGBT/IGCT devices can be controlled to act as a series active filter to reduce the voltage harmonics on the source side. It is also possible to balance the voltage on the load side by injecting negative and/or zero sequence voltages in addition to harmonic voltages. The distribution STATCOM (DSTATCOM) is similar to a STATCOM in transmission system that it uses a VSC of the required rating. However, the VSC used in a DSTATCOM is a 6-pulse converter with SPWM or Space Vector Modulated PWM (SVPWM) control over the magnitude of the injected AC voltage while maintaining a constant DC voltage across the capacitor. In DSTATCOM, faster power semiconductor devices such as IGBT or IGCT are used instead of GTO as in STATCOM. The rapid switching capability provided by IGBT (or IGCT) switches enables the use of DSTATCOM for balancing, active filtering and flicker mitigation. The unbalanced system is balanced by injecting negative sequence current to the system. The active filtering is done by injecting harmonic currents in the system. A DSTATCOM can be viewed as a controlled variable current source. If more power that is reactive is required for compensation in distribution system, dynamic capacitor rating is increased. To increase the dynamic rating in the capacitive range, a fixed capacitor can be connected in parallel with DSTATCOM. By connecting energy storage device such as a Superconducting Magnetic Energy Storage (SMES) or a battery charged by a separate charging system on the DC side, it is possible to exchange real power with the network for momentary interruptions or large voltage sags for a limited time. The combination of shunt and series active filters which are connected on the common DC side as shown in Figure.1.5 used as Unified Power Quality Conditioner. This configuration is inspired by the UPFC in the transmission system. Akagi.H (1996), suggest the possibility of a centralized UPQC at the distribution substation that will provide harmonic isolation between the sub-transmission system and distribution system. The series branch of UPQC provides this harmonic isolation in addition to voltage regulation and imbalance compensation. The shunt branch provides for harmonic and negative sequence current compensation in addition to DC link voltage regulation. A UPQC can be considered as the combination of DSTATCOM and DVR. A DSTATCOM is utilized to eliminate the harmonics from the source currents and balance them in addition to providing reactive power compensation to improve power factor or regulate the load bus voltage (Padiyar.K.R. 2007). DVR DSTATCOM Load VSC1 Line VSC2 C Vs PCC I_AF VL +VAF Figure 1.5 Schematic of a Unified Power Quality Controller (UPQC) The terminology is yet to be standardized. The term `active filters or `power conditioners is also employed to describe the custom power devices. Irrespective of the name, the trend is to increasingly apply VSC based compensators for power quality improvement. LITERATURE REVIEW Development of gate turn off capability of semiconductor switches opened a way to second-generation FACTs controller using voltage source converter (VSC). This VSC can be operated at high switching frequency to provide a faster response. The STATCOM is a shunt connected power converter based compensating device. Van Zyl. A, et.al proposed an idea for Converter based solution to power quality problems on radial distribution lines (1996). This is a first power converter based shunt compensator. The concept of STATCOM was disclosed by Gyuayi,.L (1988). The concept gives the characteristics of VSC that are suitable for grid connected FACTS controller application. In the older version of reactive power compensation device, the reactive power is drawn from energy storage devices such as capacitor in the case of Static Var Compensator (SVC), but in STATCOM power is circulated within the connected network. The energy storage components used in the STATCOM is much smaller in capacity than tho se used in the SVC. In 1995, the first +100MVA STATCOM was installed at the Sullivan substation of Tennessee Valley Authority (TVA) in northeastern Tennessee. This device is mainly used to regulate 161kV bus during the daily load variation to reduce the operation of the tap changer of a 1.2GVA 161kV/500kV transformer. The VSC used in this STATCOM is made up of eight two level VSC resulting a 48 pulse VSC. The output of each VSC is integrated by a complex interface zigzag connected interfacing transformers, because this is a two-level VSC, a series connection of five of gate-turn-off (GTO) thyristor is used as a main switch. The staircase type switching scheme at fundamental frequency (60Hz) was used as a control scheme for this STATCOM. Due to slow switching speed of the GTOs; the firing angles of the output wave form are fixed. Therefore, the amplitude of each output waveform is controlled by exchanging real power of the DC-link capacitor with the power grid. The power quality problem at distribution level like voltage regulation, harmonics reduction, power factor correction, reactive power compensation and unbalance compensations need to be carried out at distribution level. The DSTATCOM, connected to the grid through the coupling inductor at the point of common coupling (PCC) is controlled in such a way that it exchanges only reactive power with the grid. This is achieved by injecting current in quadrature with the grid voltage. The DSTATCOM is developed from the STATCOM used in transmission system for voltage regulation. Hingorani, N.G,. et al (1999) explored the concept and technology of Flexible AC Transmission Systems. The detailed modeling and average modeling of DSTATCOM and its performance for voltage regulation application is studied by Pierre Giroux et al (2000). This gives the concept of PWM controlled DSTATCOM in dq coordinate system. Sen Sarma. P.S., et al (2001) Analyzed and evaluated the performance of a distribution STATCOM for compensating voltage Fluctuations. Sao, C.K et al (2002) proposed the application of DSTATCOM from voltage regulation to reactive power compensation, power factor correction, mitigation of voltage sag and swell in distribution system and created a benchmark system to test all these performance. This DSTATCOM is controlled by PI controller in dq coordinate using parks transformation matrix. This work reduced the computation time of the controller by avoiding Inverse Parks transformation. The application of DSTATCOM is extended to compensate the reactive power for isolated induction generator by Bhim Singh et al (2003). This gave the mathematical modeling of induction generator and DSTATCOM. As the DSTATCOM is suitable for distribution system and stand alone system researcher focused to increase the performance of the controller. The concept of using DSTATCOM as a shunt active filter to reduce the current harmonics in the industrial application and gradually extended to power systems application by Georges, S. et al (2006) and Kannan, H.Y. et al (2008). The concept of Generalized Instantaneous Reactive Power Theory for Three-phase Power Systems is exploited by Akagi, P., et al (1984) and Fang Z heng Peng et al (1996). The concept of instantaneous reactive and real power is brought by them in to the design of controller for closed loop operation of VSC. A Survey of Current Control Techniques for Three-Phase Voltage-Source PWM Converters is brought by Marian P., et al (1998). These current control techniques provided a path way for direct control of VSC output current. Design and Implementation of DSTATCOM for fast load compensation of unbalanced loads was implemented by Wei-Neng Chang et al (2009). The controller for unbalanced system was built by phase sequence method and pulses are generated by current regulated PWM method. The Space Vector Modulation (SVM) PWM technique was an emerging control technique used in Voltage Source Converter (VSC) for controlling its output voltage by Atif Iqbal et al (2010). A New Vector-Based Hysteresis Current Control Scheme for Three-Phase PWM Voltage-Source Inverters was developed by Mansour Mohseni et al (2010). This thesis tries to appl y Vector-Based Hysteresis Current Control Scheme for DSTATCOM for power factor improvement. This research is focusing to use the SVM based PWM technique for DSTATCOM operation in addition to PI controlled SPWM in dq coordinate systems. This also extends the application SVM based HCC from inverter to DSTATCOM. 1.5 PROBLEM STATEMENT The voltage at distribution systems need to be maintained at 1pu at all conditions. The reactive power control plays an important role in maintaining the bus voltage at 1pu in the distribution bus.Classical reactive power controllers like fixed capacitors, switched capacitors, TCR, SVC etc have slow response and bulky. A DSTATCOM, though a costlier device it has faster response. Hence it is preferred when faster correction of voltages is required. It is required to design specific controllers for voltage regulation, power factor correction and unbalanced system compensations. All the above problems can be solved by installing a DSTATCOM with proper controllers. 1.6 OBJECTIVES The main aim of this thesis is to design and implement the controller for DSTATCOM to improve the power quality namely voltage regulation, voltage sag or swell, reactive power compensation, power factor improvement and unbalance compensation. The controllers presented in this work will aid the design engineers to develop an integrated controller with multiple control objectives. The main objectives of this thesis include To study the concepts of DSTATCOM and bring out the design procedure of it. To understand the controller principle for various applications and explore it for novel controller design. To design the new control algorithm namely PI controlled Space Vector Pulse Width modulation method and Study the performance of DSTATCOM for this controller to improve the power quality issues such as voltage regulation, power factor improvement and reactive power compensation. To compare this SVPWM controller performance with the performance of existing Sine Pulse Width Modulation (SPWM) method. To modify the basic SVPWM method so as to extend its controller to directly control the flow of current of DSTATCOM. This method of controller is called SVPWM based Hysteris Current Controller (HCC) method. To suggest a new control techniques for unbalanced system compensations using sequence analyzing method and validate its performance for power quality improve improvement. To explore the design of DSTATCOM components. To identify the controller for compensating balanced and unbalanced systems. 1.7 THESIS ORGANISATION This thesis contains seven chapters summarized as follows: In Chapter 1 need for improving the quality of power is discussed the power quality issues and various Flexible AC Transmission System (FACTS) controllers available for the power quality improvements in the transmission systems and distribution systems. This chapter also includes the review of the literature, outlines the research objectives and the organization of the thesis. Chapter 2 describes the general method for designing a DSTATCOM for power quality improvement. The DSTATCOM consists of a DC capacitor, a VSC, a coupling inductor and the controller. This chapter gives a method of designing the coupling inductor, the DC capacitor and selecting the power electronic switches for the VSC. It also focuses on analyzing the controllers of DSTATCOM for power quality improvements. In Chapter 3, the mathematical modeling of a two-level VSC based DSTATCOM is described. This Chapter also presents the PI controlled Sine Pulse Width Modulation (SPWM) and Space Vector PWM (SVPWM) switching techniques for voltage regulation applications. The comparative performance of these switching techniques is carried out. The control logic is developed from the power invariant property of the Parks transformation of

A Comparative Study of Evolution and Religion in Education in the United States and China :: Compare Contrast Religious Essays

A Comparative Study of Evolution and Religion in Education in the United States and China Buddhism does not believe in a creator god. It accepts modern ideas about the universe. Hinduism believes that the universe existed first, and then the divine spirit awoke within it and seeded itself and formed Brahma, who is the God. Hinduism, similar to Buddhism, has an evolutionary perspective of life. Both religions accept Darwin’s evolution theory. Islam, Christianity and Judaism all share the same Mesopotamian mythologies (http://www.bbc.co.uk/schools/gcsebitesize/sosteacher/re/37690.shtml). Over half of the world’s population believes in these religions. They believe the world was created by God in six days, which was recorded in the first chapter of Genesis of the Bible. God created the heaven and earth in the beginning and He created day and night on the first day. Then He separated water from the sky on the second day. On the third day God created vegetation, and on the fourth day He created the Sun, the moon and stars to govern day and night. On the fifth day, God created living creatures that live in the water and fly in the sky. One the sixth day, God made the land to produce living creatures on land, and He said â€Å"let us make man in our image, in our likeness, and let them rule over the fish of the sea and the birds of the air, over the livestock, over all the earth and overall the creatures that move along the ground.† God created man in his own image, and He told man to be fruitful and multiply. On the seventh day, God rested from all the creation he had done. What is evolution? The Merriam-Webster Dictionary has many definition of the term â€Å"evolution† (http://www.m-w.com/). The one definition that this paper is mainly referring to is as follows: â€Å"a theory that the various types of animals and plants have their origin in other preexisting types and that the distinguishable differences are due to modifications in successive generations.† Evolution is tightly associated with Charles Darwin. The British naturalist was under the influence of Charles Lyell, who argued in his book Principles of Geology that the Earth was shaped by accumulative, gradual changes instead of great catastrophes. Darwin traveled with the Beagle around the world and collected specimen. He published his book Origin of species in 1859. The two major themes or Darwin’s theory are â€Å"Descent with Modification† and â€Å"Natural selection and adaptation. A Comparative Study of Evolution and Religion in Education in the United States and China :: Compare Contrast Religious Essays A Comparative Study of Evolution and Religion in Education in the United States and China Buddhism does not believe in a creator god. It accepts modern ideas about the universe. Hinduism believes that the universe existed first, and then the divine spirit awoke within it and seeded itself and formed Brahma, who is the God. Hinduism, similar to Buddhism, has an evolutionary perspective of life. Both religions accept Darwin’s evolution theory. Islam, Christianity and Judaism all share the same Mesopotamian mythologies (http://www.bbc.co.uk/schools/gcsebitesize/sosteacher/re/37690.shtml). Over half of the world’s population believes in these religions. They believe the world was created by God in six days, which was recorded in the first chapter of Genesis of the Bible. God created the heaven and earth in the beginning and He created day and night on the first day. Then He separated water from the sky on the second day. On the third day God created vegetation, and on the fourth day He created the Sun, the moon and stars to govern day and night. On the fifth day, God created living creatures that live in the water and fly in the sky. One the sixth day, God made the land to produce living creatures on land, and He said â€Å"let us make man in our image, in our likeness, and let them rule over the fish of the sea and the birds of the air, over the livestock, over all the earth and overall the creatures that move along the ground.† God created man in his own image, and He told man to be fruitful and multiply. On the seventh day, God rested from all the creation he had done. What is evolution? The Merriam-Webster Dictionary has many definition of the term â€Å"evolution† (http://www.m-w.com/). The one definition that this paper is mainly referring to is as follows: â€Å"a theory that the various types of animals and plants have their origin in other preexisting types and that the distinguishable differences are due to modifications in successive generations.† Evolution is tightly associated with Charles Darwin. The British naturalist was under the influence of Charles Lyell, who argued in his book Principles of Geology that the Earth was shaped by accumulative, gradual changes instead of great catastrophes. Darwin traveled with the Beagle around the world and collected specimen. He published his book Origin of species in 1859. The two major themes or Darwin’s theory are â€Å"Descent with Modification† and â€Å"Natural selection and adaptation.

Music Appreciation and the Auditory System :: Biology Essays Research Papers

Music Appreciation and the Auditory System Have you ever come home after an exhausting day and turned on music to relax your nerves? While you are taking it easy, your auditory cortex is not. It works hard to synthesize the several musical elements of rhythm, pitch, frequency, and timbre to create a rich auditory experience. First, a discussion of the ear physiology is needed. Vibrating air moving at different frequencies hits the eardrum which causes the middle ear's three bones to move accordingly. The stapes, one of these inner ear bones hits on the oval window of the inner ear, and because the inner ear is filled with fluid, the bulging of the oval window causes this fluid to slosh around. The round window, also in the inner ear, compensates for the increased pressure by bulging outward. The inner ear has two functions, to transduce sound via the cochlea and to maintain a person's vertical position with respect to gravity via the vestibular system (1). . But here, we will only consider the transduction of sound. The cochlea is filled with hair cells that are extremely sensitive and depolarize with only slight perturbations of the inner ear fluid. At the point of depolarization, a neural signal is transmitted and on its way to the brain. This nerve impulse travels to the auditory nerve (8th cranial ne rve), passes through the brainstem, and then reaches the branched path of the cochlear nucleus: the ventral cochlear nucleus or the dorsal cochlear nucleus. The nerve signal that passes through the ventral cochlear nucleus will reach the superior olive in the medulla where differences in timing and loudness of sound are compared, and location of the sound's origin is pinpointed (1). The nerve signal that crosses the dorsal cochlear nucleus ultimately is analyzed for sound quality. As seen in the final step of sound transduction, the information relayed by the neural signal branches and processing occurs at different sights. No consensus has been reached as to where music is processed in the brain. Most researchers agree that the different components of music are processed in different parts of the brain, as exemplified by the branching pathway of the cochlear nucleus which facilitates the separation of sound timing and loudness with the sound quality analysis. But this information is not sufficient to answer the question of where our sense of music originates. Frackwiak has supplied a small part of the puzzle.

Motivation Theories And Techniques A Manager Can Incorporate In An Orga

Motivation Theories And Techniques A Manager Can Incorporate In An Organization Introduction Motivation is difficult to explain and practice. However motivation is still the one thing that makes people productive in their jobs. Whether the motivation is tangible or not it all depends on the individual and how management takes the information and applies it. There are many theories and practices that can be studied and applied to any situation. Motivational theory are studied and practiced by theorist and companies to increase productivity. According to Jerald Greenberg (1999) scientist have defined motivations â€Å"as the process of arousing, directing and maintaining behavior towards a goal†. The act of arousing is related to the desire and vigor to produce. Directing is the election of behavior, and maintenance is the inclination to behave a certain manner until the desired outcome is met (Greenberg 1999). Much of the motivation theories will be related to the definition provided. All major motivation theory along with the method to successfully motivate your employees will be introduced. The theory and method that a manager may choose to use will depend on the environment and on the individual. There are two types of motivation theories content and process. The Content theories are based on the basic need and drives. The other theories focus on the process by which people are motivated (Auth, 1999). Content Theories Content theories of motivation focus on this question: What causes behavior to occur and stop? The answers usually center on (1) the needs, motives or desires that drive pressure and forces employees to action and (2)employees' relationships to the incentive that lead, induce, pull and per... ...es Accel Team. (1999) Team Productivity Improving Resources. Web 15 April 2015 http://westrek.hypermart.net Auth, M. (1999) Lecture on Motivation- 2/24/99 & 3/1/99. Carson: CSUDH Cook, M. (1991). 10-Minute Guide to Motivating People. New York: Alpha Book Greenberg, J. (1999) Managing Behavior in Organizational (2nd Ed.). New Jersey: Prentice Hall Learning, Reinforcement, Reward System and Self-Management Teams. Web 15 April 2015 www.emporio.edu Nelson, B (1997). 1001 Ways to Energize Employees. New York: Workman Publishing Norwood, G (1999). Maslow's Hierarchy of Needs. Web 15 April 2015 www.conect.net/georgens/maslow.htm Pepitone, J. &Bruce, A. (1999) Motivating Employees. New York: McGraw Hill Spitzer, D. (1995). Super Motivation. New York: AMACON. Wheaton & Cameron.(1998) Developing Management Skills 4th Ed. Addison –Wesley Inc

Gaining And Maintaining Airworthiness Engineering Essay

Aircraft design procedure involved in varied subjects such as aeromechanicss, constructions, flight mechanics etc. Therefore, for an aircraft to go operational it is indispensable to show that the building and design of the aircraft can follow with the demands applicable and such confirmation and proof grounds required to be delegated to the relevant governments. This study introduces ‘Airworthiness ‘ and provides the reader the model involved in deriving airworthiness and how to keep it later.IntroductionConsideration of airworthiness policies has its beginnings since the early yearss of military flight. But aircraft design informations has been recorded prior to 1910 for balloons and the Royal Aircraft Factory has produced a design demand papers in 1916. The Aerial Navigation Act that is countenance by the Home Office in 1911 to censor winging in populated countries is an early illustration of safety ordinance. Airworthiness Department has been established decennary subsequently by the Royal Aircraft Factory ( as portion of the Air Ministry ) , which is the beginning of processs for company design blessings and approved informations. Aircraft airworthiness means conformity with applicable air power governments ordinances that defines the minimal safety degree of the aircraft, of the riders transported and the over flown districts. When designed and built harmonizing to applicable demands ‘ , When operated within its ‘ intended environment and within its ‘ quantified and declared restrictions, And maintained in conformity with processs acceptable to the responsible Authority. The European Aviation Safety Agency ( EASA ) Regulation 216/2008, Article 5, 2 ( degree Celsius ) defines the airworthiness as ; â€Å" Each aircraft shall be issued with an single certification of airworthiness when it is shown that it conforms to the type design approved in its type-certificate and that relevant certification, reviews and trials demonstrate the aircraft is in status for safe operation † The Airworthiness is a corporate duty of operators, governments, industries and care administrations. An airworthy aircraft is one where the likeliness of any incident or accident as a consequence of malfunction, public presentation or handling of the aircraft is kept to acceptable degrees. The lone existent step of airworthiness in usage is given by tracking and analysing incidents and accidents. The staying subdivisions will discourse the kernel of â€Å" Gaining and Maintaining Airworthiness † .Figure 01: Airworthiness – Corporate DutiesExecution of AirworthinessAuthority ( EASA ) assurance that the design of a merchandise complies with the applicable demands based on Certification of the administration ( IR 21 – DOA ) & A ; Certification of the design of merchandises ( CS 25 – Technetium )DO ApprovalHarmonizing to European Aviation Safety Agency ( EASA ) , Design Organisation Approval ( DOA ) demands Implementing Rule ( IR ) portion 21 ( published as e xtension to European Commission Regulation ( EC ) No 1702/2003 ) includes procedural demands applicable either to the industry ( Section A ) or to the Competent Authorities ( Section B ) but Part 21 does non include commissariats to depute EASA authorization and / or signature to persons. â€Å" Certification of aircraft and related merchandises, parts and contraptions, and of design and production administrations † Administrations must show following cardinal elements in order to obtain DO Approval. Design Assurance System Handbook Right Peoples Footings of Blessing Duties of the holderFigure 02 – DOA Key ElementssDesign Organisation Approval ( DOA ) – Administration StructureFollowing diagram illustrates a simplified administration construction showing the indispensable elements in an aircraft design and fabrication administration.Figure 03: Design Administration StructureChief Executive Officer ( CEO ) : Responsible for appropriate operation of the work topographic point by guaranting handiness of needed resources. Designated Certification Specialist ( DCS ) : Airworthiness specializer nominated for a given subject ( ATA or Sub-ATA degree or for Approved Manuals ) to transport out the enfranchisement undertakings, in peculiar to pull off the conformity presentation activities for their sphere. Part of the airworthiness map and act under the control of Product Integrity. Certification Manager ( CM ) Certification panel leaders for their country of competency, Participate in the development of new enfranchisement schemes The CM is the interface with Aviation Authorities at panel degree for primary TC, foreign enfranchisement / proof activities and for allocated major alterations. Chief Airworthiness Engineer ( CAE ) Responsible for taking and organizing the enfranchisement and airworthiness activities for the programme. Supported by a squad normally called the CAE squad composed of: A Type Certification Manger ( TCM ) An Individual Aircraft Certification Manager ( IACM ) A Continued Airworthiness Manager ( CAM )Type CertificationType enfranchisement is the procedure showing that the design of an aircraft complies with the applicable air power demands. Certification procedure could be a new type certification new aircraft ( ex. Airbus A380 ) , Amended Type enfranchisement theoretical account or derivative ( antique: Airbus A350 – 1000 ) and important major alterations to the type design ( antique. A330-200 Passenger to Freighter ) To allow and EASA Type Certificate, aircraft industry shall obtain foremost a DOA ( Design Organisation Approval ) covering the relevant merchandise ( aircraft type ) and besides shall show its capableness to plan, attest and guarantee the continued airworthiness of its merchandises in conformity with the enfranchisement specification ( CS-25 ) and Environmental protection ( CS-34, CS-36 ) demands. To industry and release to service series aircraft, industry must so obtain a POA ( Production Organisation Approval ) and set up relationship between DOA & A ; POA.Flight TrialFlight proving procedure could be potentially really hazardous and highly expensive due to unanticipated job s consequence in loss of life ( both crew and people on the land ) and harm to the aircraft. Due to this grounds modern flight testing is one of the most safety witting operations. Typically there are two types of flight trial plans, military and commercial. There is a important difference between military and commercial flight proving where commercial trial plans are carried out to attest the aircraft meets all needed safety and public presentation demands where as military plans involved in aircraft industries planing and edifice aircraft to authorities contracts to run into specific mission capablenesss. Initiation of flight trial readyings for both commercial and military aircraft commence good befo re the aircraft is ready to wing, although due to the fact that the authorities is funding the military undertakings, engagement of military flight proving is commence much early-on in the design and proving procedure.Historical Data AnalysisHarmonizing to historical grounds, operational and airframe related hazard of a serious accident causes is about one per million flight hours but failure jobs occurred by aircraft systems jobs is about 10 per centum of this entire sum. Therefore, it is sensible to reason that systems mistakes should non allowed serious accidents and it is therefore possible for a new design to alter the chance of such a serious accident non to be greater than one per ten million flight hours ( 1 x 10-7 ) . But it is non possible to place whether the mark can be met until all the aircraft systems has been numerically jointly analysed. Due to this ground it ‘s assumed that there are about 100 possible failure conditions present randomly which could forestall safe flight and landing of the aircraft. By sharing out every bit the mark allowable hazard ( ten 10-7 ) every bit among these conditions risk allotment consequence in non greater than 1 ten 10-9 to each. Therefore the upper hazard bound for failure conditions would be 1 ten 10-9 for each hr of flight which approximates chance value for the term â€Å" Highly Improbable † .Analytic techniquesAssorted analytical techniques have been developed in line with the above subject to help Airworthiness Authority and the applier to transport out a safety analysis, which could profit systematic qualitative analysis. This technique besides of import for analyst to execute quantitative appraisal when required. The Advisory Material Joint ( AMJ ) identifies both qualitative and quantitative analytical attacks which could used to back up JAA personal or assist applier to find the conformity with the demand. And it besides provides counsel for finding if or when a peculiar analysis to be conducted. The intended demand of the analytical tools is supplement but non to replace operational and technology opinion.Legal IssuesTo hold a basic apprehension of the legal demand is critical for air power professionals such as pilots, mechanics, air traffic accountants and executives. National and international Torahs or ordinances regulate all facets of civil air transit. To guarantee the effectivity of the legal model and enforceability of safety facets, the undermentioned basic groups of ordinances have been developed. Airworthiness Regulations to specify: Applicable processs, and Minimum safety, proficient and public presentation demands to be realised and maintain in the aircraft design. Ex-husband: EASA Part 21 ( aircraft enfranchisement processs ) , Part M and Part 145 ( aircraft care ) & A ; CS-25 ( design codification for big aircraft ) Operational ordinances: to specify the basic regulations air traffic has to follow and the lower limit demands for certain sorts of operations, for the aircraft and the individual or the administration. Ex-husband: EU-OPS1 Commercial Air Transportation After an accident there is two chief probes ( proficient & A ; legal proceedings ) will be conducted. Legal proceedings consist with ; Civil proceedings which involved in civil claims for amendss by victims and/or their relations, Commercial proceedings which involved in claims for amendss by client and/or its insurance company ( Aircraft fix / loss, Reduction in aircraft residuary value, Loss of gross ) and eventually Criminal prosecution, in instance of decease / serious hurt, in certain legal powers ( ex: France, Germany ) .Continued AirworthinessHarmonizing to ICAO Doc No 9760-2001 continued Airworthiness defined as ‘The procedures that guarantee, at any clip in its life, an aircraft complies with the proficient conditions fixed to the issue of the Certificate of Airworthiness and is in a status for safe operation. ‘ And recommends ‘Contracting provinces are required to hold a system that ensures aircraft are in a status for safe operation. ‘ F. Florio ( 2006 ) stated that safety is the most of import thing which has to be guaranting every clip in every flight operations and all the aeroplanes must be in an air worthy province which is suited for fly. In other words all the aircrafts must accomplish and execute all the processs in the Airworthiness Directive manuals. Furthermore, Florio ( 2006 ) besides mentioned that continued airworthiness can be rely on two factors Administration operators CareCareCare can be explained as changes, reviews, replacings of parts of the aircraft. This can be done by taking a record entry for each event such as replacing of LRUs ( Line replacement units ) . Harmonizing to Florio ( 2006 ) , Maintenance refers to as ‘preventive care, changes and fixs and debut of airworthiness directive ‘ and besides he stated that airworthiness is rely on the care programmes, which besides set up the replacing of clip alteration points, the inspection and repair engines, propellors and assorted parts of contraptions. Florio mentioned that as the portion of the merchandise type enfranchisements of aircraft airworthiness governments requires instructions for continued airworthiness therefore these instructions can be identified as the cardinal tools of the care because they are the basic care programmes. These care programmes must provide the demands of operational and care criterions. Harmonizing to EASA Maintenance programme ; Every aircraft shall be maintained in conformity with the care programmes approved by the competent authorization, which shall be sporadically reviewed and amended consequently. The care programme and any subsequent amendments shall be approved by the competent authorization The care programmes must set up conformity with ; Instruction manuals for go oning airworthiness issued by the type certification and the auxiliary type certification holder Instruction manuals issued by the complement authorization Instruction manuals issued by the proprietor or the operator and approved by the competent authorization.RepairsRepair procedure involves different administrations where, when the merchandises are non with aircraft industry, go oning airworthiness is governed by the province of register or the duties are spread out in administrations. Part 21A subpart M states the fix procedural demands for enfranchisement. Under Part 21 subpart Meter: Elimination of harm ( 21A.431 B ) Unrepaired amendss ( 21A.445 a ) Out of Part 21 subpart M Replacement without design activity ( 21A.431c ) Repairs design from an approved manual ( GM 21A.431 a ) Following diagrams illustrates the Airbus mending procedure.Figure 04: Airbus Repairing ProcedureThe Structure Repair Manual ( SRM ) describes general fix patterns, stuffs and typical fixs, allowed amendss, which are considered applicable to standard fixs. It ‘s approved by aircraft industry under DOR privilege.AlterationsChanges made to a peculiar aircraft after the issue of the airworthiness certification is a alteration. This could include alterations to the constructions, systems, powerplants, propellors etc†¦ Furthermore, permutation of one type for another besides considered as a alteration. Any alteration requires blessing from the Civil Aviation Authority straight or via an sanctioned administration. During a design alteration, inside informations of the alteration must be given to the authorization at early phase where so the alteration is classified as child or major medicine harmonizing to the nature of the probe. If the result of an probe requires amendments to the Certificate of Airworthiness or Flight Manual, authorization may necessitate following major alteration processs.Incidents and AccidentsFlight safety experts believe that series of events leads to incidents and accidents.Accidents – During the operation of an aircraft, consequence in happening associated with a individual being fatally or earnestly injured from the clip any individual boards to the aircraft with purpose of flight until the clip all individuals disembarked. Incidents – Other than accidents incidents besides occurrences which relate to the operation of the aircraft or could impact the safety of its operation.Aging AircraftCivil Aviation authorization has defined Aging aircrafts as ‘An operational aircraft nearing the terminal of its design life premises ‘ ( Alder P. 2005 ) . Aging aircraft can besides be called as an older aircraft every bit good. Since the aircraft are industry to supply long permanent services for so many old ages, all the aircraft must be in an airworthy province and have to be safe to wing. Thus care programmes must be carried out to keep the aircraft and besides aircraft must be operated harmonizing to the makers ‘ recommendation. Florio F. ( 2006 ) stated that, older aircraft require extra attention and the care programmes must be carried out in a more specific manner than the late manufactured aircraft. And besides he stated that due to the weariness, inadvertent harm and besides due to the environmental impairment more review in the constituents of the construction must necessitate in care programmes. So to keep airworthiness in older aircrafts makers of the flight has to supply operators with the specific plans. In older aircrafts usually each of the airplane constituents have to undergo some of the fixs, inspection and repairs, review care, preventative care and some replacings of constituents of the aircraft. Care records have to be update on a regular basis by the operator. Florio F. ( 2006 ) states that between operator of the aircraft, maker and besides the authorization there should be an unfastened communicating system. Furthermore he states that one time a job occur the operator or the proprietor of the aircraft must inform it to the maker and so maker has to fix the recommendations and has to update the appropriate programmes of continued air worthiness. After scrutiny of those care programmes the governments will O.K. those.Role of the RegulatorAirworthiness programmes consist of three chief functions. Regulator Implementer Research worker Civil Aviation Authority ( CAA ) , European Aviation Safety Agency ( EASA ) and Federal Aviation Regulations ( FAR ) are illustrations for the ordinance governments. These governments generate and distribute the ordinances for aircraft operations for air power industry. Civil Aviation Authority is the UKs independent specializer regulator. Their chief duty is to supply universe taking air safety environment in the air power industry. Aircraft licensing, care of specific airworthiness direction systems and economic ordinances, consumer protection, policies for air space and puting up national safety criterions can be taken as cardinal function of CAA. Regulators involved in few or many functions as follows: Puting up the civil air power criterions and guarantee they are achieved. Regulates and encourages air hoses, airdromes and national air traffic services economic activities etc†¦ Manages the chief travel protection strategy. Ensure the air space is a common topographic point for all users by conveying civil and military involvements together. Rede the authorities on air power issues. Represents consumer involvements Conduct scientific and economic research. Provide specializer services by bring forthing statistical informations.Conclusion & A ; RecommendationAircraft airworthiness means conformity with applicable air power governments ordinances that defines the minimal safety degree of the aircraft, of the riders transported and the over flown districts and when designed and built harmonizing to applicable demands, when operated within its ‘ intended environment and within its ‘ quantified and declared restrictions and maintained in conformity with processs acceptable to the responsible Authority. Therefore, The Airworthiness is a corporate duty of operators, governments, industries and care administrations.