The Carter and Reagan Years Essay Example | Topics and Well Written Essays - 1000 words

The Carter and Reagan Years - Essay Example It is more reasonable to discuss Jimmy Carter first since he came before Reagan and it was during his presidency that the world faced the after effects of the oil shock (Walsh, 1997). Of course the present state of the world shows that we are going through another energy crisis and while our solution to the problem might be technological, the solutions thought of by Carter were practical. He wanted to handle the situation by asking the American people to make sacrifices and by asking them to make adjustments to their lifestyles (Shoup, 1979). In 1977, Carter used Congress to create the Department of Energy which was supposed to help America get out of dependence on cheap oil. Not only did Carter support the recommendations of the department, he applied them to his own life. To conserve energy, Carter started wearing sweaters to ward off the cold; he installed solar water headers in the White House and even had a wood burning stove in his living area. He also asked Americans to make sacrifices such as conserving energy, using less heating or cooling equipment, turn off Christmas decorations and place measures on how cool or hot commercial buildings could be (Carter, 1995). Comparatively, the use of force and strong-arm tactics that had become the hallmark of Reagan’s administration might have caused Reagan to attack countries with oil to take over their natural resources for American use. Carter also shifted the American viewpoint of allies and enemies through his focus on human rights. In essence, instead of working with a policy of containing ‘the communist threat’ Carter worked with the idea of human rights violations to suggest that some countries were behaving badly and some were behaving fine. Previously, the viewpoint on human rights was largely ignored but by bringing a focus on human rights, Carter was able to give a human touch to the policies of the government (Shoup, 1979). The practical

The resistance in a conductor Essay Example for Free

The resistance in a conductor Essay This will consequently increase the resistance of the wire. However if the wire was shorter, the free electrons will not collide with the atoms as much as it did when it was longer. So now I can conclude that resistance is directly proportional to length and that if the length of the wire doubles its resistance doubles. If I draw a graph representing current against voltage for different lengths of wire, then it will look like this: The shortest wire of these will be the steepest in the graph; this is because it has the least resistance and therefore supplied the least voltage. The longest wire will have the greatest resistance and will be represented by the lowest line on the graph. Material of the wire: Here I use two different materials for the wires and calculate their resistance. I have chosen copper and nichrome. I will use the same procedure as mentioned before to calculate the resistance and I will set up the apparatus as first mentioned while keeping the thickness and the length of the wires same. If I were to draw a graph representing current against voltage, for this experiment it will look sort of like this: Thickness of the wire: Resistance: Resistance and length: If I plot a graph to show how resistance varies with length, it will show me something similar to this predicted graph: The graph passes through the origin, which concludes that , however much I increase the length, the resistance will increase by the same amount. Resistance decreases if the cross-section area is increased. An example can help to get a clearer picture; a narrow wire has fewer paths existing for the electrons to move through. While a larger wire has many more paths they could take. This makes conduction easier. It can be shown that the relationship between the cross-section area, A and resistance is R ? 1/A OR R ? K/A Where k is a constant that depends on the length and type of material. If I plot a graph to show how resistance varies with area, this will be shown: Unlike the graph for length, the line doesnt pass through the origin. However: R ? 1/A means that a graph of R against 1/A will show direct proportion. If I plot a graph to show how resistance varies with 1/Area, I will get this: Free electron conducting in metal Conductors: Conductors ( e. g. copper, aluminum ) are those substances which easily allow the passage of electric current through them. It is because there are a large number of free electrons available in a conductor. In terms of energy band, the valence and conduction bands overlap each other as shown below. Due to this overlapping, a slight potential difference across a conductor causes the free electrons to form electric current. Thus the electrical behaviour of conductors can be effectively explained by the band energy theory of materials. Prior test In order to rely on my results, I take the readings of the current for the increasing and the decreasing currents; giving a prior test. Material: Length: Thickness: Resistance (? ) Average Current (mA) Current (decreasing in voltage) Current (increasing voltage) Voltage (V) Sly. Experiment This first trial is to test the accuracy and the realism of the experiment itself. It also shows us that as the temperature has an effect on resistance. I will use a 100cm long strip of Nichrome wire and attach it to the circuit and the current will be raised and recordings will be taken at different levels. 1. Attach 100cm Nichrome wire. 2. Turn on the power supply and raise the current. 3. Take reading from the voltmeter. 4. Continue raising the power recording voltmeter readings. This above procedure will require the following equipment given below: 1. 100cm Nichrome wire 2. Ammeter 0 to 200 mA 3. Voltmeter 0 to 20 volts 4. Rheostat 5. Crocodile clips 6. Battery 7. Switch with key 8. Connecting wires By adjusting the rheostat the voltage are increasing in steps of 0. 15 V to 0. 50 V. Each time noting down the corresponding ammeter readings. I do this to make sure the readings of the ammeter while increasing and decreasing the voltage are the same almost with a slight variation, therefore making sure that no heating has taken place. I will then note down the ammeter readings while decreasing the voltage in steps of 0. 50 V to 0. 15 V, and Ill take the average current readings as this will improve the reliability of my experiment. I will use a table similarly to the one drawn and record my readings and calculate the resistance. Material: Nichrome Wire Length: 100cm Thickness: 0. 45mm Resistance (? ) Average Current (mA) Current (decreasing in voltage) Current (increasing voltage) Voltage (V). Sly. No Average = 5. 70 And now I will draw a graph representing current against voltage, and then I will take the line of best fit from which I will take the gradient and check whether the results I have obtained graphically matches the results in the table. Obtaining Evidence In this part of my task, I will show all my graphs and results that I have obtained after carrying out the experiments. I have done the same process as I have planned earlier. My experiment will be based on these:   Length (same thickness and different lengths)   Thickness (same length and different thickness). Resistors in series Resistors in parallel Different Lengths Material: Nichrome Wire Length: 100cm Thickness: 0. 45mm mA Resistance (? ) Average Current (mA) Current (decreasing in voltage) Current (increasing voltage) Voltage (V) Sly. No Material: Nichrome Wire Length: 75cm Thickness: 0. 45mm mA Resistance (? ) Average Current (mA). Current (decreasing in voltage) Current (increasing voltage) Voltage (V) Sly. No   Average = 6. 49 Material: Nichrome Wire Length: 50cm Thickness: 0. 45mm mA Resistance (? ) Average Current (mA) Current (decreasing in voltage) Current (increasing voltage) Voltage (V) Material: Nichrome Wire Length: 25cm Thickness: 0. 45mm mA Resistance (? ) Average Current (mA) Current (decreasing in voltage) Current (increasing voltage) Voltage (V) Sly. Resistance = 1/440 = 0. 00227 x 1000 = 2. 27 Different Thickness Material: Nichrome Wire Length: 100cm Thickness: 0. 90mm mA Resistance (? ) Average Current (mA) Current (decreasing in voltage) Current (increasing voltage)Voltage (V) Sly. No Material: Nichrome Wire Length: 100cm Thickness: 0. 45mm mA Resistance (? ) Average Current (mA) Current (decreasing in voltage) Current (increasing voltage) Voltage (V) Sly. No Average = 8. 40 Material: Nichrome Wire Length: 100cm Thickness: 0. 56mm mA Resistance (? ) Average Current (mA) Current (decreasing in voltage) Current (increasing voltage) Voltage (V) Sly. Average = 4. 86 Material: Nichrome Wire Length: 100cm Thickness: 0. 32mm mA Resistance (? )Average Current (mA) Current (decreasing in voltage) Current (increasing voltage) Voltage (V) Sly. NAverage = 8. 73 Resistance from graph Thickness: 93 Material: Nichrome Wire Length: 100cm and 50cm Thickness: 0. 45mm mA Resistance (? ) Average Current (mA) Current (decreasing in voltage) Current (increasing voltage) Voltage (V) Sly.   Average = 12. 79 Resistance from graph 100cm and 75cm Gradient = y/x = 25. 15/0. 40 =62. 87 Resistance = 1/62. 87 = 0. 01590 x 1000 = 15. 90 100cm and 50cm. Gradient = y/x = 23. 55/0. 30 = 78. 5 Resistance = 1/78. 5 = 0. 012738 x 100 = 12. 73 Parallel Material: Nichrome Wire Length: 100cm and 75cm Thickness: 0. 45mm mA Resistance (? ) Average Current (mA) Current (decreasing in voltage) Current (increasing voltage) Voltage (V) Sly. Average = 3. 69 Material: Nichrome Wire Length: 100cm and 50cm Thickness: 0. 45mm mA. Resistance (? ) Average Current (mA) Current (decreasing in voltage) Current (increasing voltage) Voltage (V) Sly. No Resistance   Analyzing Evidence. Here in this part of my experiment I will prove that my hypothesis and my obtained results obey the ohms law. This is where the results from my graphs and the results I have already obtained earlier will be compared; talking about its proportionality. Variation in length: When the length of the wire boosts, the amount of atoms present in it also boosts. The variation of these atoms block the passage of electrons passing through the wire. A slower flow of electrons will therefore lead to less current passing through the wire hence the longer the wire, the longer the electrons have to travel, so they come across more collision. From this statements I predict that the resistance increases with the length of the increasing wire. Hypothesis: It is expected that the resistance should increase in proportion to the length. The resistance should be considerably higher for the 100cm length than it is for the 50cm length. Theoretically the resistance for the 100cm length should be 2 times that of the 50cm length. The reason for this was explained earlier. Resistance will increase with length. Resistance is proportional to length. In this table below I will show the results I have obtained from the graph and the table: ? R/L = constant Average R (graph)R (table) Length of wire (cm). From the above table I have concluded that resistance increases with length and as the length doubles, the resistance doubles about with it. The column R/L is roughly constant. This supports my hypothesis that resistance of a wire is directly proportional to its length. The even increase of resistance with length can be explained by the clashes that take place in a wire as current flows through it. When the current flows through a wire, the free electrons collide with the atoms of the wire. The longer the wire the more collisions occur. And this will result in an increase in the resistance. However, the shorter the wire, less the collision, hence less resistance. I will show the relationship between length of a wire and its resistance on a graph, from the values of the above table. And this will confirm my conclusion that length is directly proportional to its resistance. Results The resistance is clearly increasing as the length of the wire increases. And when the length of the wire doubles, its resistance also doubles. The results shown in graph is exactly what is anticipated to happen as stated in the hypothesis. From the table above we can see that as the length doubles, the resistance also approximately doubles. In the last column R/L if found to be constant somewhat, therefore making it obey the ohms law R ? L The predicted graph drawn between R and L looks like this: Variation of thickness This experiment is needed to confirm that the resistance of a wire is inversely proportional to its diameter. If the cross-section of a wire is enlarged this means that the area on which the electrons move will be enlarged. Thus suggesting that there will be no clouds of electrons and atoms. The current can travel easily with nothing increasing the resistance. Likewise if the wire is narrower the obstruction will be crossed by the electrons will be lesser and therefore the current will decrease. Hypothesis It is expected that the thinnest wire will have the highest resistance because a thicker wire offers less resistance to current than a thinner one of the same material. This is because current consists of electrons flowing through the metal of the wire. The electrons hop from atom to atom in the metal in reaction to the electric field in the circuit. A conductor with a larger cross-section allows more electrons to intermingle with the fields.

Tesco: Management in Malaysia

Tesco: Management in Malaysia Tesco is the third largest grocery retailer in the world after Wal-Mart and Carrefour. It is headquartered in Cheshunt, United Kingdom. Tesco was founded by Jack Cohen from a market stall in Londons East End in 1919. (Tesco PLC About us Our history) The name of Tesco came from the initials of T.E Stockwell, who as a partner in the firm of tea suppliers, and CO from Jacks surname in the year 1924. Under the leading of Jack, its business has grown over the years and now operates in 14 countries around the world, employ over 500,000 people and serve tens of millions of customers every week. Tesco operate in Malaysia by having alliance with local enterprise group, Sime Darby, who hold a 30% shares in the business. Since Tesco opened its first store in Malaysia in May 2002, Tesco has opened 46 stores across Peninsular Malaysia. Tesco has a strong track record of supporting local small and medium-sized enterprise (SMEs) and small traders. In 2007, Tesco Malaysia offers a special ClubCard which is the Green ClubCard Points for business customers to specially meet the needs of local operators. To help small retailers develop and compete, Tesco also support them by offering technical advice, training and support, as well as preferential access to the Tesco supply chain and reduced rates to Tesco malls. (Tesco PLC About us Our businesses) Planning is the function of management that involves setting objectives and determining a course of action for achieving those objectives. It is also often called the primary management function because it establishes the basis for all the other things managers do. Managers should be able to plan and be aware of the environmental conditions that the organization facing and forecast future conditions. Strategic planning This is the highest position in the company example board of directors. It involves SWOT analyses in determining how to position the organization to compete effectively in their environment. Tescos strategic planning is based on the organizations mission, which is its fundamental reason for existence. Managers of Tesco require information from both internal and external sources. Survey and interview carried out by the managers are crucial in order to understand well about the companys direction. Tescos strategy is to make their shopping trip as easy as possible for their customers. Besides that, the management of Tesco is constantly seeking for ways to reduce the price in attention to attract more customers. They utilize shopper insight to deliver ease of shop at anywhere around the world. Tactical planning It is the planning that is designed to develop relatively concrete and specific mean to implement the strategic plan. It is the middle level of managements. Tescos tactical planning includes qualitative and internal sources of information. Besides, routine information is also needed in the tactical planning. Managers in Tesco should have the ability to develop contingency plans to make sure category growth is within the expected parameters. Creation and execution of annual category plan to identify gaps and opportunities for retailer to exploit is also fundamental for Tescos management. Operational planning It support the operational managers by keeping track of elementary organization activities and transactions. Systems answer routine questions and track the flow of transactions through the organization such as: systems to record bank deposits or track the number of hours worked each day. Operational planning is the lowest level of management in an organization. Daily, frequent and regular information are needed in order to perform any task. Tescos operational managers usually use internal sources of information to carry out tasks. Besides, qualitative information is also essential in the operational planning. By going through the quantified analysis, managers in Tesco are able to create retailer specific promotional programs. Workforce planning It is the process of analyzing an organizations future needs for people in terms of numbers, skills and locations. Workforce planning in Tesco allows the organization to plan how those needs can be met through recruitment and training. As a Workforce Planning Manager, he or she should be able to provide accurate call forecasts, shrinkage patterns and productivity reports to maximize Contact Centre activity. Monitor ongoing service level performance, escalating quickly to identify and manage emerging service issues are part of the managers responsibilities. Tesco is growing, therefore it needs to recruit on regular basis for both the food and non-food based of the business. Hence, workforce planning is vital for the company in order to expand its business. Customer planning Customer planning manager in Tesco will have to drive category growth make use of this household brand and retailer brand portfolios through a combination of research, merchandising, planning and working with category development and buying contacts within accounts. Creation of branded and own brand solutions is needed to support the category growth within the retailer. Besides, Tescos manager is playing an important role in manage and support retailer category reviews. They have to drive category benefit in order to achieve the objectives of the company. Leading Leading in an organization is directing the work activities of others. Leadership in Tesco is about influencing, motivating and inspiring people. People at each levels in Tesco organization, from administrators and customer assistants to directors have their own responsibilities and timescales. Each people will face different types of decisions.This influences the most appropriate leadership styles for a specific work and for a given project. Tesco managers have responsibilities for front of house (customer-facing) staff as well as behind the scenes employees, such as office staff. Before making a decision, the manager will consider the task in hand, the people involved and those who will be affected (such as customers). Various internal and external factors may also affect the choice of leadership style used. Internal factors include the levels of skill that employees have. Large teams may have members with varying levels of skill. This may require the manager to adopt a more direct ive style, providing clear communication so that everyone knows what to do to achieve goals and tasks. On the other hand, team leaders may take a more consultative approach with other managers of equal standing in order to get their co-operation for a project. External factors may arise when dealing with customers. Qualities of leaders in Tesco According to Tesco Management a leader needs to exhibit certain qualities in order to effectively exercise their leadership functions. These are: Group Influence a leader must generate willingness to achieve desired goal or objective. Command a leader must decide upon a course of action as quickly as the situation demands and to carry through with a firmness and strength of purpose. Coolness a leader must remain composed under testing or trying conditions. Judgment to produce effective results, a leader must possess the ability to arrange available resources and information in a systematic and commonsense way. Responsibility a leader must demonstrate sustained effort combined with a degree of dependability in order to complete a task or achieve an objective (Kermally 2005). Management styles and leadership used in Tesco Tescos tend to use autocratic leadership style. Autocratic leadership style is characterized by decision making fully by the manager. This is because the company needs to and the tasks need to be done quickly or else they would not be done. For example, a task that is set for a shelf filter to put the milk out but has not been told to put the milk out because the management is still deciding who is going to put what out, so the milk still will be in the storage and the customers cannot buy it. To run the Tesco sufficiently, the management uses autocratic leadership style. Besides that, Tesco also uses management by objective. They use this because the management states to each employee in their decision analysis what their objectives are for a certain period. Also each manager is set objectives by their line manager for their team. For example, the sales team objective that has been set is to increase the amount of customers rising Tesco by 25%. This is how Tesco is structured and managed. Organization Organizational is a deliberate arrangement of people brought together to accomplish some specific purpose. Management is the process of getting things done, effectively and efficiently, with and through other people (Stephen P.R,DavidA. DeCenzo, Mary. C, p. 26 -27). Managers are responsible for arranging and structuring work to accomplish the organizations goals. Tesco divides its employees into departments in order to achieve a better performance, effective and efficiency. The functional departments inside the Tesco are as below. Administration: It is to create an ordered way of working which enables the business to function smoothly. It provides the proper controls and methods of supporting the people within the organization. The admin managers would make an ideal administration system to have proper procedures for controlling and monitoring work. Hence, there would have to be a high level of supervision and well-motivated staff. Administration system is a very important department as well as they are the backbone of the organization, and without them the business  would not be organized enough to reach their objectives. Distribution: It helps Tesco to maintain the most competitive prices and improve customer service and always striving to make life better for customers, simpler for staff and cheaper for Tesco. The distribution managers are responsible to develop, promote and sell central distribution services to Tesco suppliers. They also work closely with Tesco Distribution Centers and suppliers in ensuring agreeable distribution service level and cost. This program offers a wealth of opportunity and provides customers with a chance to make big changes in how they operate. Finance: The management is responsible for the transactions of Tesco. This team provides management information to measure and monitor the business, either in the form of corporate steering wheel, five-year plans, operating budgets, forecasts or weekly/monthly financial results. The finance managers should be able to set budgets and forecasting resources needed and drive action plan to achieve the budget. They have to ensure financial reports are created, updated and distributed to the management team on timely basis. Human Resource: Nowadays, human resource developing is a key activity in today organization. (Beardwell, I., Holden, L. Clayton, T 2004:266) The organization is training and development of employees, communication and consultation, and rewards and benefits linked to achieving steering-wheel targets. This way is used to measure the performance management (Anonymous, 2003). The Human Resource Managers are responsible to make a complete and feasible human resource management plan by using different strategies to manage those employees. They also ensure to across the business have world-class skills and tools to meet the needs of people and ultimately Tescos customers. ICT: ICT works to improve communications between business areas to improve stock availability and streamline processes. Every aspect of their operation such as stock, distribution, payroll, communication methods are controlled by ICT. ICT managers have to ensure that customers experiences the checkout process which mean the system and processes at the tills need to be simple and smart. They also have to get new ideas like Self Scanning Checkout which the customers love. Therefore, ICT is truly a business partner which integral to all business operations. Marketing: It consists of a number of areas including local and stores marketing, price and promotions and brand marketing. It works closely with the Customer Research and Analysis team to understand the customers and their trends. The marketing managers are responsible for seeing that basket size regularly increased, that the journey for customers is simple and effective, as well as planning for the future. All in all, marketing acts as the voice of customers which means they not only communicate with customers through eye-catching advertising campaigns, but influence the rest of Tesco to meet customer needs. Customer Service: The aim is to try harder for Tesco customers than anyone else and to treat them as they would like to be treated. Thus, Tesco Customer Service Centres is set up as a place that serves up excellent customer service. Customer Service managers would be responsible to ensure the customer service options are managed effectively. They also manage a competent after sales service, extended warranty and credit service for customers. Now, they are making customers experience with them which is where Every little Helps comes from, as its something they strive to every day. Research and Development: It is focus on delivering major improvements to Tescos Store Ordering and Supply Chain systems to deliver better product availability, reduce stock holding and lower waste. This department covers four major areas of the business such as Sales Forecasting and Ordering, Depot Ordering, Optimization and Simplification and Business Insight. The project managers are able to lead multiple high-profile projects and deliver major improvements across the supply chain through redesigning systems and processes. In a nutshell, much of work relies on their ability to combine in depth analysis with practical recommendations and the perseverance to get ideas implemented. Controlling Control is the management function that involves monitoring activities to be secured that being accomplished as planned and correcting any significant deviation. Control is important in any management this is the only way that managers know whether organizational goals are being met. If managers did not control, they have no way of knowing whether their goals and plans were being achieved and what future actions to take. Control is sales department Tesco management experiences the improvement of sales over sometimes. Tesco management make sure their employees understand all the sales products, this is to take advantage of the opportunities presented by the organization and the management increasing sales can be trough special offers to customers, in addition to make customers to buy more and increase their products. Control of quality of products Tesco management make sure all the products are very good quality and the management make sure all the products are used from their community trade. In addition the management provided a good quality of products and met the needs of customers. Control and monitor resources Taking appropriate care from variation resources are very vital for Tesco management, it will help to save them in financial issues. Tesco management make sure all the equipment regular check and replace them as soon they are damaged and update latest software this to make sure their employees feel happy and make ease in their job. There is critical need to service the customers around clock. Tesco as a global retail business that span many time zones, the management gave flexible working option to some employees this can improve morale and help retain people within business and promote diversity as a key improving performance. Tesco management provided professional and skills training through programs technical skills development. Tesco has long-term established policy on promoting an equal opportunities and diversity across the global business. The most important things leading to the success of Tesco There are four most important things that leading to the success of Tesco. Firstly, Tesco is giving great value for their customers. They never ever compromise on their customer services. They are having a motive that customers are always first and right. Tesco train their employees in such a way that they give the best services to the customers. They also have good behavior with their customers. This is one of the important things that are leading to the success. Secondly, Tescos giving importance to their employees. They are giving good facilities and best services to their employees. The management make the strategies in such a way that employee feel like their job is secure and enjoy their work. The employees also have given the discount cards. Tesco gives friendly environment in the working place to their staff. They give good rate and respect compare to the other big organizations. Thirdly, the Tesco give main focus to control the cost and price of the products. To attract the customers and to be successful organization, they give the customers low prices of products and offer them high quality products. Although Tesco always negotiate their prices as compared to the general market, the main products of the Tesco are their own. So there are different cost centers in Tesco like labor cost, product cost, direct cost, indirect cost, maintenance cost and delivery cost. Lastly, Tesco have new technologies to manage their business. Every year they are changing the strategies and operations. The whole business is computerized with new and advanced technologies. They handle their stock, cash, inventory and staff wages and account of the company. They also introduced their CCTV cam recording for the customers and staff safety, this is to prevent stealing. Major challenges facing by Tesco over the next five years Tescos major challenge is to overturn failure to become a player in the US market. Tescos target is to break record in the US market by 2013. To achieve the goal, Tesco have to look for developing markets such as Asian country where there is a large proportion of the population is underserved by quality supermarkets. Apart from that, lack of consumers confidence towards the products is also one of the major challenges. To survive the plunge, Tesco should start diversifying operations and to invest more on Tesco bank, insurance and mobile communication portfolio. Moreover, Tesco is also facing another challenge in technological advancement. Software have to be kept updated all the time in order to make ease to their employees. Tesco should design an application or website to create convenience for the customers to look for sales and to check for points accumulate. In order to make their brand product as a strong brand is also part of the major challenges. The product made by Tesco must be in good quality and innovative. However, to maintain and improve the freshness of the product is also accounted in the challenges. Critical review Tesco sells daily necessary things such as food, nonfood, electronic, house equipment and others items. Tesco sells more than 23,000 items. Tesco have been critiqued good and bad review from customers, employees and managers. The practices that Tesco using for maintain their sells are PESTLE analysis. Political Factors Tesco operates around the globe. Tesco performance is highly influenced by political and conditions of these countries (ivory research ltd, 2005). Tesco provided mix of job opportunities from flexible, such as lower-paid and locally based jobs and highly-skilled, higher-paid (Balchin, 1994). For example, without the flexible system, their financial will be affected due to the difficulties in finding employees with highly-skilled but lower-paid. The flexible system can insure people factors work with them without compromised with their objectives. This will make the employees can improve their skilled and loyalty with their companies. Recommendations: provide more motivation and training Economic factors Economic is one of the concern to Tesco, they are likely influence demand, costs, prices, and profits (Ivory research ltd, 2005). With highly unemployment, which the decreases the effective demand required to produce such a good products. For example, if someone is to demand with his work this will affected his job performance. Due to working in large scale and few employees. This mean the management need to hire a unemployment, this can make the jobs more easy and the demand can be negotiate. Recommendation: offering a jobs and benefits to the employees, find a good suppliers with good production and loyalty, give opportunities to their employees to improve their performance. Social factors This has a significant influence in business managed the organization is made up of people. The fact that it determines the people environment of business. For example; without social with people Tesco will not know what the customers needed and wanted. Social communication need to build up among them and customers. Recommendation; need to change the communication skills to all employees, make them be professional in their tasks. Technology factors Nowadays, technology is helping us with everything. Tesco make sure all the electronics and software are up to date with technology update. This will provide good environment for both customers and Tesco employees. This will give better benefits service, and more personalized and shop with more convenient. For example; nowadays smartphone have taken our lifestyle, so everyone needs to be in hurry and fast. Now various type of application has been invented and software also has been updated. With the smartphone we can easily access to buy our items or groceries at the tip of fingers. Tesco has made application for that Clicks Bricks Recommendation; always make sure the equipment is on the maintained, always update the software, update with the customers. Conclusion It is not a coincidence for Tesco to last and even become one of the top grocery retailer until today, but it is needed to thank to the management system in Tesco. Although there is a geographically diversify due to decentralized basis, the management systems in different countries are still more or less the same. Tesco has a pretty complete organization by having different department to smoothen operation of daily routine, every single employee knows about their specific duty and could perform it well. While a comprehensive planning by the manager is essential to acquire the maximum output from the employees, manager also playing a vital role in leading the employees to approach the objective in a more effective and efficient way. The controlling of employee by managers also make sure that thing wont go wrong and even it does, rectify can be done spontaneously to prevent unwanted loss. Upon doing this assignment, we learned that management principle is not only related to business and commercial activities only, but, its also applicable in our daily life. For example, the autocratic leadership style that is being practicing by Tesco, although it seem that that is a lot of restriction under the autocratic system, yet, the applying of this system can ease us in doing our task that is being assigned. We can reduce the time on figuring new way and method to solve it but just simply follow the conventional procedure. This can help us to save time and at the same time ensure the quality of our work.

never say never :: essays research papers

"Ok, so let me see if I've got this straight." I was on the phone with my friend Bob. I've known Bob for years. He's a former Navy guy who now does electrician work at Disneyworld. He's seriously bright, but doesn't know squat about computers. And he was trying, once again, to figure out what the heck I was doing with my life. "You're starting another Notes publication?" He stretched out the word "another" so it seemed that he was entirely incredulous of my actions. "Well, yeah," I responded with some enthusiasm. "But this one's on both Notes and Domino." "I think I understand Notes. It's this kinda email, database, group-think thing from IBM, right?" I hadn't heard it described exactly like that, but he was certainly in the ballpark. "But what the heck is Domino? Didn't Kim Basinger play Domino in Never Say Never Again? You're writing about a Bond girl?" I shook my head. Of course, he couldn't see that through the phone. "Uh, no Bob. We're not doing a journal on James Bond, as cool as that might seem. We're doing a journal on Lotus Domino, a very cool server technology, and on Notes. They work together." "So you're not writing about Claudine Auger, who plays Domino Derval in Thunderball. And you're not writing about Kim Basinger, who pretty much remakes the character as Domino Petachi in Never Say Never Again," Bob was spouting Bond flick facts with a scary degree of finesse. "You're just doing another techy journal on this Lotus Domino thing?" "Yep." "But haven't you done this before?" Bob was right. We had done this before. In fact, we'd created no less than four Lotus journals, and a book. Back in 1993, I wrote a book called Lotus Notes 3 Revealed! It was the second book ever on Notes and was quite popular. Based on the success of the book, we did our first journal, Workspace for Lotus Notes. Since we were new to the whole journal publishing business, we partnered with The Cobb Group division of Ziff Davis. Ziff, as you probably know, is the largest independent publisher of computer magazines, and Cobb is their division that produces journals and newsletters. The other part of the "we" in this, by the way, is Managing Editor and Vice President of Publishing, Denise Amrich. While I've been responsible for the overall direction and technical vision of the publications (the editor-in-chief), Denise has been responsible for making it all happen.

A Story of Three Progressives

A Story of Three Progressives Three classic theorists, Karl Marx, Emile Durkheim, and Max Weber have discussed and analyzed the complexity of modernization. Modernization is a broad concept that refers to major social changes which occur when a pre-industrial society develops economically and the workplace shifts from the home to the factory (industrialization), people move from farms into cities where jobs are available (urbanization), and large-scale formal organizations emerge (bureaucratization). Each of these sociologists have developed major theoretical and methodological statements on the topic of modernization and many of their theories that were made a century or two ago still hold true today. Beginning with Karl Marx, an extreme revolutionary of the 19th century, he argued that modernization is an ascendancy of industrial capitalism. His idea of modernity was shaped by three developments in history: the French revolutions of 1789 and 1848, the industrial and agricultural revolutions in Britain, and the collapse of the church's intellectual credibility. Despite living his life when most of Europe was still agricultural and artisanal; most European states were still dominated by monarchical power; and most Europeans still went to church, Marx understood industrial labor and some of its future effects. Marx depicts modernization as a capitalist society working as a system, in which each group or individual works to fulfill the need of another. As soon as an individual enters a capitalist society, he is socialized into a certain role or behavior which fulfills the needs of that society (role meaning either a proletariat or a capitalist). For instance, if an individual is a proletariat he must work for a capitalist to satisfy the needs of the society. (cite communist manifesto somewhere). This division between the proletarians and the capitalists are enforced for the benefit of the owners so that they can exploit the working class for their own means, but the working class does not resist because this system has become normalized. The two classes work as a â€Å"team† and through a hierarchy create a productive society. Overall, Marx thinks of modernization as a world where individuals rely on each other to function, and each individual is assigned a role. Next, Emile Durkheim stressed that modernization involves an increased division of labor (specialized economic activity), and a shift from mechanical to organic solidarity. This academic discusses division of labor as a necessary tool for a productive society, but it is also a natural occurrence. Durkheim proceeds from the concept that the division is an organic outgrowth of a society in which different people have different interests and skills. Therefore, a society in which individuals specialize in producing a good or service will be more efficient than a society that is generalized. Durkheim’s view of modernization explains that iindividuals no longer perform the same tasks, have the same interests, nor necessarily share the same perspectives on life. But, Durkheim makes it clear that this does not cause a society to fail or disintegrate, instead organic solidarity is formed. Similar to the organs within a body, individuals perform certain specific functions, but rely on the well-being and successful performance of other individuals. If one organ fails, the rest of them fail as well. A body, or in this case a society, cannot function at all if one part crumbles. This reliance upon each other for social (and even physical) survival is the source of organic solidarity and the modern world’s interdependency in a society. Lastly, Max Weber analyzed modernization as the replacement of tradition with rationality. He felt that society will become more complicated, specialized, professionalized, and stratified in the modern world. Prayer and religion will no longer be aspects that fix and/or help solve problems. Science will be the rational way of thought and will be the dominate way of finding a solution. Specialization will result in professionalism, which in turn will bring more order to the modern world as every segment of every job will have a â€Å"specialist†. In general, modernization to Weber meant society will be controlled by managers and experts, and rationality will dictate the way of life. Each of these theorists have strong opinions on modernization and developed what they believe will be the effects of it in the future. Between Marx, Durkheim, and Weber, various theoretical arguments have been made, each being extremely progressive thoughts for the time period they lived in. Karl Marx thinks modernization leads to both good and bad outcomes. One outcome modernization leads to is alienation. Marx believed that alienation is a systematic result of capitalism, in which both the capitalist and proletariat become isolated. This theory is based upon his observation that, in emerging industrial production, under capitalism, workers inevitably lose control of their lives and selves in not having any control of their work. Thus, workers never become autonomous, self-realized human beings in any significant sense. Karl Marx attributes four types of alienation in labor under capitalism. The first type is when the worker becomes alienated from his own human potential. The workplace is no longer a place of fulfillment, but instead where the worker feels the least human and the least like himself. Ultimately, the worker becomes a machine that is controlled. The next type of alienation occurs between workers. This happens because capitalism reduces labor to a commodity to be traded on the market, rather than a true social relationship. Even if a worker is side by side another worker, he is unlikely to communicate with him due to the nature of capitalism (e. . an assembly line using technology does not allow one to speak with a fellow worker). Thirdly, the worker becomes alienated from the product itself. This occurs because the capitalist class controls the worker and in turn owns the product. In fact, a worker must buy the product he makes for the same price as anyone else. Lastly, a worker becomes alienated from the entire production process. This means that the actua l work becomes mindless, meaningless, and more than likely offers little or no intrinsic satisfactions. Similarly, a worker who performs a very specialized task may not even know what the final product will be. Another outcome Marx believes modernization leads to is social stratification. Social stratification means that working class people are not likely to advance socioeconomically, while the wealthy people may continue to exploit the proletariat generation after generation. Marx identified that the social classes are stratified based on their connection to the means of production and therefore the ruling class, bourgeoisie, and proletarians, maintain their social positions by maintaining their elationship with the means of production. This maintenance of status quo is achieved by various methods of social control employed by the bourgeoisie within many aspects of social life (e. g. religion). Marx also strongly believed modernization would cause products and/or commodities to have exchange value. This meant that instead of products being used immediately, they would be exchanged in the market for money or other objects. This use value is connected to the relationship between human needs and tangible objects that can satisfy those needs. For instance, shoes have the purpose of protecting ones feet and bread has the use value of satisfying hunger. If an individual chooses to trade one of these objects for the other than he has given each an exchange value. According to Marx, the various exchange values of commodities reflect the various amounts of labor, measured in time, that their production requires. Commodities and their use value lead to Marx’s idea on the â€Å"fetishism of commodities. † This is when the commodity takes on its own form. This can be something an individual produces or even one’s own labor. One’s own labor can even become a commodity, as it bought and sold and therefore requires an exchange value. This idea also relates to alienation mentioned above. A workers labor is used by the capitalist to make the objects that ultimately come to dominate the workers. Hence, commodities are the source of alienation because workers produce for the sake of others instead of for their own purposes and needs. Similarly, the fetishism of commodities can be interpreted into the concept of reification. Reification is the process of coming to believe that humanly created social forms are natural, universal, and absolute things. This implies that people believe that social structures are beyond their control and unchangeable. Marx believed capitalism would cause reification to occur and create a self-fulfilling prophecy in which structures actually do become the character others believe they are. This concept demonstrates that capitalism will not only lead to objects given value, but people as well. Marx also feels that modernization leads to wants becoming needs, and needs reating more needs. In other words, the satisfaction of one’s needs can lead to the creation of new needs. Ritzers example for this is how the production of cars satisfied the need for long-distance travel, but led to a new need for highways. Also, at one time people did not feel they needed cars when the car was first invented, but nowadays most people feel they need them. Therefore, Marx concluded that la bor occurs in response to needs, but the labor itself transforms needs, which can lead to new forms of productive activity. One final thought Karl Marx thought capitalism would create was a proletariat revolution. Because the capitalist exploit the workers, Marx believed that sooner or later the proletarians would fight back. As capitalism progresses more and more people become workers, and less people become capitalists. Marx thought that with increasing numbers of workers, more resistance to exploitation and oppression would occur, ultimately leading to a confrontation and revolution. Despite these thoughts, Marx felt that capitalism was a step in the right direction. The birth of capitalism opened up new possibilities for freedom of workers and provides possibility for freedom from the traditions from previous societies (pre capitalism). Though, Marx was an advocate of Communism and believed this was the answer to a change in mode of production. Next, Emile Durkheim has theories on the effects of modernization as well. First, Durkheim believes modernization leads to dynamic density. Over time, societies go through a transition from being more primitive/mechanical, to being more modern/organic; the difference lying in the source of their solidarity, or what holds them together (Ritzer, 2007). The cause of this transition is an increase in dynamic density. One may think the solution to this problem is to have a growing or increasing population, but this is not sufficient enough to create change in the division of labor. The reason for this is that individuals and small groups of people can live in relative isolation from one another and still perform most of the tasks necessary for survival themselves, no matter how big the overall population gets (Ritzer, 2007). Therefore, a growing population must also increase the frequency with which people interact within and between social groups. This increase in dynamic density is likely to cause a division of labor and the transformation of social solidarity. As mentioned above, Durkheim developed two terms: mechanical and organic solidarity. A society characterized by mechanical solidarity means a unified one in which every person is a generalist. This society is held together because each individual is engaged in a similar activity as the another, and can therefore relate with each other. Contrasting, organic solidarity is held together by the differences among people and the fact that each individual has a different job or task. Durkheim believed that modern society was one in which there are a narrow range of tasks and many people must work in order to survive. Therefore, modern society is held together by the specialization of people and their need for the services of many others. Unfortunately, according to Durkheim, this means that modern societies have weaker shared understandings, norms, and beliefs than primitive ones, but are more likely to be cohesive from the division of labor. Along with dynamic density, Durkheim was concerned about the moral â€Å"health†of modern society. He felt that morality was connected with society and therefore society could not be immoral, but it could possibly lose its moral force if the collective interest of society became nothing but self-interests of individuals. Durkheim also felt that people were in risk of a â€Å"pathological† loosening of moral bonds (Ritzer, 2007). Without this, people would be in search of more and more gratification, leading to more and more needs. Every human being will want more and society will start to not limit these needs. Durkheim called this the â€Å"insatiable desire† that modernization would endure. In summary, Durkheim debates in The Division of Labor that moral solidarity has changed in modern society and that modern society allows for more interdependence and closer, less competitive relations. Lastly, Max Weber thinks modernization leads to a variety of outcomes. The first outcome of modernization is bureaucracy.

Fundaments Operations of Aircraft Propellers

Contents Abstract Introduction Pitch Blades Forced Acting on a Propeller Propellers Types Fixed-Pitch Propeller Ground-Adjustable Variable-Pitch Propeller Constant-Speed Propeller Appendix 1 References Abstract: _This text outlines the fundaments operations and aspects of aircraft propellers. It details the components, forces and workings of a propeller as well as discussing the difference between the different propeller types. _ Introduction: Propeller types are defined by blade pitch as being fixed or variable which will be further detailed later in the text. To fully appreciate the differences and understand the advantages of different pitched propellers we must first consider the fundamental characteristics of propellers. Usually propellers have two, three, or four blades; for high-speed or high-powered airplanes, six or more blades are used. In some cases these propellers have an equal number of opposite rotating blades on the same shaft, and are known as dual-rotation propellers. Small single engine aircraft have the propeller mounted on the front as multi-engine aircraft have them set on the wings. Pitch: What is pitch? Pitch is important as it is the main differential from propeller type to propeller type. Essentially pitch relates to the angle of the blade in respects to a flat plane. It is the helical blade path or simpler the distance the propeller blade covers during a full rotation and the cut it has on the air. Pitch is referred to in two ways, fine and coarse. A fine pitch propeller has a low blade angle, will try to move forward a small distance through the air with each rotation, and will take a ‘small' bite of the air. It requires relatively low power to rotate, allowing high propeller speed to be developed, but achieving only limited airspeed. This is like having a low gear in your automobile. (Brandon 2008) A coarse pitch propeller has a high blade angle, will try to advance a long distance through the air with each rotation, and will take a big ‘bite' of the air. It requires greater power to rotate, limiting the propeller speed that can be developed, but achieving high airspeeds. This is like having a high gear in your automobile. (Brandon 2008) The Blades: The propeller blades are in fact aerofoils producing lift and drag. As the propeller spins the leading edge of the blade cut through the atmosphere and accelerates a tube of air or_ relative airflow _the diameter of the propeller moving the aircraft forward. This rotation is able to work because the propeller blades are designed slightly different to wing aerofoils as they have a small twist in them so that the greatest angle is at the blade root and the smallest at the top, due to the different angle and speed that each section of the blade travels. These _blade _elements are in place at different angles because the linear velocity increase towards the tip of the blade as it has a greater distance to travel, the_ _angles prevent bending making each section advance through the air at the same rate. The blade angles combined with the forward motion and the circular rotation of the propeller keep constant the best angle of attack (AOA). The twist causes the blade path to follow an approximate helical path easiest seen in a linear form. This action is similar to a screw being turned in a solid surface, except that in the case of the propeller a slippage occurs because air is a fluid. Forces Acting on the Propeller: Aircraft that are not jet powered use a propeller which converts the rotational power from an aircrafts engine into aerodynamic forces; thrust power moving the aircraft forward through the atmosphere and propeller torque which acts in the plane of rotation. The plane of rotation is perpendicular to the propeller shaft. Propellers are conventionally placed in front of the engine on the engine drive shaft. During cruising flight the propeller torque balances the engine torque and the thrust balances the aircrafts drag force. The propeller rotates clock wise and when the forces are not balance the torque reaction increases a rolling friction on the aircraft. As the blades produce a thrust force, the thrust force pulls on the thinnest section of the blade attempting to bend the tips. For single engine aircraft with the propeller mounted on the front the clockwise rotation creates a vortex of air or slipstream that flows around and down the fuselage to the rudder which affects the lateral movement of the aircraft or a slight yaw to the left during cruising flight Variable-pitched propellers can have their blade angles/pitch altered and will be further explained. Two different forces experienced in these propellers can affect the blade angle. Centrifugal twisting moment (CTM) Aerodynamic twisting moment (ATM) CTM causes pulling stress at the base of the blade and a twisting force at the pitch change axis produce a finer pitch angle. The blade will want to align itself with the plane of rotation. The relative airflow over the blades produces a total reaction, an ATM where the total reaction is ahead of the pitch change axis, tempting the blade to twist, increasing the blade angle producing a coarser pitch. Windmilling propeller – Occurs when the propeller drives the engine. Caused by; steep dive with no power, sudden reduction in power, engine failure, causing the blades to twist to a finer pitch. Propeller Types: As stated earlier pitch is a main component between propeller functions. Under the classification of fixed and variable pitch propellers there are four common types, fixed-pitch, ground-adjustable, variable-pitch and constant-speed propeller. The first two are fixed propellers as the other two are variable. There are a few versions of variable-pitch propellers that may be seen in the aviation industry, two-position propeller, in flight-adjustable propeller, automatic propeller and the constant-speed propeller. The most commonly used at present will be concentrated on, elaborating on fixed through to the variable propellers and the enhancements of pitch control. Fixed-pitch propeller:_ _ The cheapest and crudest propulsion aero-device is the fixed-pitch propeller. Although it has been superseded many a time it is the most common type of propeller used in sport aviation. The fix-pitch means that the pitch of the propeller is decided by the manufacture, there is only one setting and the performance of the aircraft is confined by the constraint of that one setting. This means to reach the optimum RPM/airspeed the propeller has to function through inefficient speeds. Normally there are two versions, a climb propeller with a fine pitch setting or a cruise propeller with a coarse pitch setting. Ground-adjustable propeller: The pitch for a ground-adjustable propeller is able to be set for the condition of flying the aircraft will be doing but only before the flight. However it is still a fixed propeller as once the pitch is set in cannot be changed during the operation of the aircraft. These propellers are mainly installed on ultra light and experimental aircraft. More usually they are used as a low cost way to try out various pitches to determine the propeller pitch that best suits an aircraft. Variable-pitch propeller :_ _ A variable-pitch propeller is exactly what the name implies; the pitch can be controlled and adjusted in flight to the most efficient setting for a certain phases of flight. Simply during take-off the propeller would be set to a fine pitch allowing the engine to develop reasonable revs and then to a coarser pitch during cruising flight speed. The engine will be ticking over comfortable while the propeller cuts through more air. Combine this with throttle control a wide variety of power settings can be achieved maintaining airspeeds with the limits of the aircrafts engine speeds. This feature of a variable-pitch propeller will provide you with performance advantages, including: Reduced take-off roll and improved climb erformance. Fine pitch allows the engine to reach maximum speed and hence maximum power at low airspeeds. Vital for take-off, climb, and for a go-around on landing. (Brandon, 2008) Improved fuel efficiency and greater range. Coarse pitch allows the desired aircraft speed to be maintained with a lower throttle setting and slower propeller speed, so maintaining efficiency and improving range. (Brandon, 2008) Higher top speed. Coarse pitch will ensure your engine does not over speed while the propeller absorbs high power, producing a higher top speed. (Brandon, 2008) Steeper descent and shorter landing roll. With a fine pitch and low throttle setting, a slow turning propeller is able to add to the aircraft's drag, so slowing the aircraft quicker on landing. (Brandon, 2008) Constant-speed propeller : The constant-speed propeller is a special case of variable pitch, which is considered in a family of its own, and offers particular operating benefits. A constant-speed propeller allows the pilot to control the power just by the throttle once the propeller/engine speed has been optimally selected (actually controlling the absolute pressure of the fuel/air mix in the intake manifold [MAP] which then determines power output). This is controlled by a governor or constant speed unit (CSU) which detects the propeller speed and acts to keep it at the selected engine/propeller speed selected by the pilot and vice versa. If the propeller speed increases then the CSU will increase the pitch a little to bring the speed back within the limits. Thus creating vastly efficient running components during phases of flight (The governor or constant speed unit [CSU]_ may be an electronic device that detects the rotational speed of a slip-ring incorporated in the propeller hub, and controls operation of a servomotor/leadscrew pitch change actuator in the hub assembly. Or, it may be an hydraulic fly-ball governor attached to the engine, using engine oil to operate a hydraulic pitch change piston in the hub assembly. In the first case, the cockpit control device is likely to be knobs and switches. In the hydraulic system, the governor is likely to be cable operated from a cockpit lever — JB. _ (Brandon, 2008) While allowing the pilot to ignore the propeller for most of the time, the pilot must still choose the most appropriate engine/propeller speed for the different phases of flight. Take-off, go-around and landing. A high speed setting is used when maximum power is needed for a short time such as on take-off. The high speed setting may also be used to keep the propeller pitch low during approach and landing, to provide the desired drag and be ready for a go-around should it be required. (Brandon, 2008) Climb and high speed cruise. A medium speed setting is used when high power is needed on a continuous basis, such as during an extended climb, or high speed cruise. (Brandon, 2008) Economic cruise. A low speed setting is used for a comfortable cruise with a low engine speed. This operation produces low fuel consumption and longer range, while the advantages of low noise and low engine wear are also enjoyed. (Brandon, 2008) *Appendix 1: – *Description*s* (ThaiTechnics) Leading Edge of the airfoil is the cutting edge that slices into the air. As the leading edge cuts the air, air flows over the blade face and the camber side. {draw:frame} Blade Face is the surface of the propeller blade that corresponds to the lower surface of an airfoil or flat side, we called Blade Face. {draw:frame} Blade Back / Thrust Face is the curved surface of the airfoil. {draw:frame} Blade Shank (Root) is the section of the blade nearest the hub. Blade Tip is the outer end of the blade farthest from the hub. Plane of Rotation is an imaginary plane perpendicular to the shaft. It is the plane that contains the circle in which the blades rotate. {draw:frame} Blade Angle is formed between the face of an element and the plane of rotation. The blade angle throughout the length of the blade is not the same. The reason for placing the blade element sections at different angles is because the various sections of the blade travel at different speed. Each element must be designed as part of the blade to operate at its own best angle of attack to create thrust when revolving at its best design speed {draw:frame} *Blade Elements* are the airfoil sections joined side by side to form the blade airfoil. These elements are placed at different angles in rotation of the plane of rotation. The reason for placing the blade element sections at different angles is because the various sections of the blade travel at different speeds. The inner part of the blade section travels slower than the outer part near the tip of the blade. If all the elements along a blade is at the same blade angle, the relative wind will not strike the elements at the same angle of attack. This is because of the different in velocity of the blade element due to distance from the centre of rotation. {draw:frame} Relative Wind is the air that strikes and passes over the airfoil as the airfoil is driven through the air. Angle of Attack is the angle between the chord of the element and the relative wind. The best efficiency of the propeller is obtained at an angle of attack around 2 to 4 degrees. Blade Path is the path of the direction of the blade element moves. {draw:frame} Pitch refers to the distance a spiral threaded object moves forward in one revolution. As a wood screw moves forward when turned in wood, same with the propeller move forward when turn in the air. Geometric Pitch is the theoretical distance a propeller would advance in one revolution. {draw:frame} Effective Pitch is the actual distance a propeller advances in one revolution in the air. The effective pitch is always shorter than geometric pitch due to the fact that air is a fluid and always slips*. *