Lean Operations – Dell

Lean Operations Today – Case of Dell Computers Co. – [pic] Instructor: C. Liassides Thessaloniki, 18/5/10 City College, Business 2ab Spring Semester Lean Operations Today – Case of Dell Computers Co. – A corporation is a living organism; it has to continue to shed its skin. Methods have to change. Focus has to change. Values have to change. The sum total of those changes is transformation. ~Andrew Grove There is nothing so useless as doing efficiently that which should not be done at all. ~Peter F. Drucker AbstractAs the lean manufacturing philosophy has gained a lot of attention in the modern industry, this paper will analyze some basic concepts of lean operations and the importance of â€Å"Lean Thinking† in a competitive market. However, besides providing its advantages, the paper will have a close look at some most common managerial mistakes in implementing lean operations. Furthermore, through the real life case of Dell Company we will see how lean operations operate in practice and what difficulties may arise. – Table of Contents – Introduction3Literature Review – Lean Operations3 Dell – Lean to the Bone6 Conclusion8 Reference List9 Appendix11 Figure 111 Introduction For the last few decades there has been a great talk about lean operations. Many companies have decided to implement lean operations as a result of the global competition and the shift from batch production to more personalized, individual production. However, even though the system promises numerous advantages, companies out there still fail to get the best out of it and in most cases experience various losses.The reason for such misfortune lies in the superficial examination of lean operations. To be more straightforward, one thing is to talk about it, and one thing is to implement it. Therefore, throughout the paper we will discus the basic concept of lean operations and some components of lean operations that managers usually tend to oversee. Furthermore, based on the real life company, Dell Computers, we will see what lean means in practice, what are its biggest advantages, but also what are its disadvantages and how it might suffer in the future. Literature Review – Lean OperationsIt all started after the WWII when the competitive Japanese market was recovering from the war crises. At that time the economy was experiencing raw material leakage, fluctuating customer’s demand, and no capital for automation. The need for a different production approach was necessity (Percy and Rich, 2004). The fist ones with a different production approach were Eiji Toyado and Taiichi Ohno of Toyota Motor Company who developed a lean production system ( i. e. Toyota Production System or TPS) or differently known as Just-In-Time (JIT) system (Stuart and Boyle, 2007).The system was nothing secret. It meant find the waste, eliminate the waste, have trucks deliver parts moments before they're needed (no inventor y), and know the demand (Levans, 2006). Further on, as the manufacturing industry grew, many different elements and techniques had started to adding up to the definition of lean, including six-sigma quality, visual display, defect prevention, one-piece flow, Kanban, setup time reduction, quality at source, just-in-time supply, preventative maintenance, value analysis and value stream mapping, etc. (Stuart and Boyle, 2007). According to Womack et al. 1990), depending on the type of manufacturing process, lean includes all these practices, but in different degrees of importance and intensity. Nevertheless, lean system as an operational system also has to manage on how to integrate all the those elements so they can fit and work together in order to attain waste reduction, production and quality improvement, as well as high workforce engagement (Stuart and Boyle, 2007). Regarding to Womack and Jones (1996), this integration of elements in a working cell that reduces waste, improves pro ductivity and quality, and enforces workforce engagements is called: â€Å"Lean Thinking†.Therefore, based on the success of processes used at Toyota, Womack and Jones (1996), proposes five key principles of the lean enterprise approach (see appendix, Figure 1) (Carnes and Hedin, 2005). The fist principle is called Value Stream Mapping (VSM). It is the process of â€Å"mapping the material and information flows of all components and sub-assemblies in a value stream that includes manufacturing, suppliers and distribution to the customer† (Seth and Gupta, 2005; p. 44). Once, we have mapped all wasteful activities[1] we can start the process of elimination of those activities in every value stream (Percy and Rich, 2004).The third principle is making the value flow run constantly (Carnes and Hedin, 2005). In other words, avoiding batch production and inventory queues by keeping things moving. According to Percy and Rich (2004), this is usually done by using modular designs , cellular working, general purpose machines, quick changeovers, multi-skilled operators, etc. The forth principle is basing flow on customer demand (pull). This principle is founded on the Kanban or differently, Work Flow Control system which states that materials are released into production only when the customer demands them ( i. e. nly when needed) (Percy and Rich, 2004). Finally, the fifth principle implies continuous improvement and pursue of perfection (Carnes and Headin, 2004). However, according to Professional Engineering (2005) this is just the first step in the lean process. The important thing is how to â€Å"make it stick† over a long period of time. Regarding to Professional Engineering (2005) the problem is that the companies nowadays are too static. After they implement lean operations, they tend to â€Å"sit† and wait for the things to happen. However, what Vasilash (2000) points out, lean operations are like a â€Å"journey with no end† (p. 3 ). In order to get the positive results, companies need to be constantly committed to the lean operations that they are running. There is no such a thing as â€Å"Whew! We are done. Thank God it’s over. † As Vasilash (2000) states: â€Å"it is never over† – or if it is, than our implementation of lean operations was of no use. But besides being continuous, a company in order to be lean has to have â€Å"lean workforce† (Carnes and Hedin, 2004). This is the part of lean where the importance of management infrastructure comes in place. According to Vasilash (2000), lean is a behavior rather than a product.How a particular machine is being used and weather the machine is lean, depends primarily on the management infrastructure (the way that the manager organizes his workers). For example, if we put our grandmother behind an extra hi-tack computer that can do a billion things at the same time is not the same as if we would have a computer scientist. In the first case we would get much less machine utilization than in the second one. Therefore, we can say that it is the manager and the workers are the ones that makes the process lean. At the same time, it is not true that machines are unimportant.It is just that people within an organization are fundamental part of lean operations. Regarding to Vasilash (2000), comparing to products, information, supplier/customer, and process flow, management/trust and people are weighted as more important ( e. g. 50% comparing to 1. 6, 1. 8, etc. ). Moreover, Vasilash (2000) continues and states that before we start the process of implementation the fist thing that we should consider doing is building trust among the workers and managers and have them functionally organized. It is almost impossible to perform kaizen (Process/Flow) without considering management/trust and people.However, organizing workforce, building trust and commitment is not an easy thing to do. In other words, it is one of t he biggest problems of lean operations (Percy and Boyle, 2005). Regarding to Carnes and Hedin (2004), numerous companies worldwide experience the problem of employees and management resistance. These resistances come from lack of upper management support, poor employee training, resistance to change, etc. After all, we are not all Japanese. Dell – Lean to the Bone As we have already mentioned in the introduction – One thing is to talk about lean operations, and another is to implement them.Therefore, the following discussion will focus on how some major world corporations, such as Dell, have managed to successfully implement lean operations and get the best out of it. Back in 1984, the founder of Dell Computers Company, Michael Dell, came up with an extraordinary and amazing idea: Selling PCs directly to consumers, avoiding retail stores and limiting customer support, thus offering radically lower prices than the competitors (Kharif, 2005). Soon afterwards, the company grew at an amazing speed becoming a multibillion company and a leader in the industry (Chopra and Sodhi, 2004).However, what actually has made the company a leader in the industry is the implication of its â€Å"Direct† approach, mostly being based on the Toyota Production System (TPS). The company takes orders directly and than builds product according to the order (Kharif, 2005). According to Breen and Aneiro (2004), in order to make the built-to-order process run smoothly, Dell relies on its unique supply chain systems. As the orders come directly form the customers (demand pull), Dell is able to know the exact demand for a particular product at any operating market and thus alert the suppliers.The way it alerts the suppliers is by connecting all suppliers and suppliers’ suppliers together, so when the information about sold product arrives, everybody is dealing with it (Pritchard, 2002). By doing this, the company manages to keep its inventory level at the lowest possible points. As Michel Dell argues, when dealing with inventory it is all about flow (Pritchard, 2002). Manufacturing plant in Limerick, Ireland is one of the rare hyper-efficient factories in the world.Regarding to Breen and Aneiro (2004), it has no warehouse, assembles nearly 70,000 computers every 24 hours, has two hours of inventory in its factories, and a maximum of just 72 hours across its entire operation. In other words, by keeping its stock for as little time as possible, the company manages to keep costs to the minimum and makes sure that the customer gets the brand new parts. Furthermore, other characteristics of the Dell business model that goes along with the TPS are employee commitment and continuous improvement (Pritchard, 2002) A key part in the organization is people.According to (inside) â€Å"Dell has a highly skilled workforce and puts a strong emphasis on education. † (p. 16). As a result, workers show more pride in the quality of their work and are w illing to share ideas for further improvements (Kharif, 2005). Therefore, since there exists great employee commitment; continuous improvement in order to gain competitive advantage becomes unproblematic task. Regarding to Pritchard (2002), Dell is constantly working on improving its production process. One of the newer innovations is Dell’s PC cases that do not require any screws (snap shot system).This system simplifies assembly and at the same time improves reliability. At the end we can see that even though the Dell’s Direct Model is based on the TPS, it takes it to the new level. Its financial model is the company’s most powerful weapon on the market. The model creates a â€Å"cash-convention† cycle of 36 negative days by receiving payments from customers right away through credit cards the company is able to pull products directly form the supplier and builds and ships the product within 4 days (Breen and Aneiro, 2004). In other words, Dell is able finance its operation costs through suppliers.Another important aspect of the Direct Model is the management of supply-chain risk. Dell minimizes delay-related risk by using high-cost air transportation to deliver important parts from Far East, while for less expensive parts keeps some inventory that is shipped from the US on the regular basis. Moreover, Dell has some high-value suppliers in Asia on which it can rely on when needed (Breen and Aneiro, 2004). However, nowadays, there are too many academics out there suggesting that the Dell’s Direct Model is actually in crisis. They argue that it may no longer be an asset, but become a liability.One of such critics of the model is Berry Zellen (2004) who states that the biggest problem in Dell model is that the company is forgetting the basics of lean operations. As the years go on and the competition increase, the system is getting more and more complex which may result in terrible consequences. According to Gottfredson and As pinall (2005), in 70% of lean cases with an increase in complexity meant rising costs and hindering the profit growth. The catch is either to keep things simple and target what customers actually need or to raise the prices. In Dell’s case the company is doing exactly what it should not.It increases the complexity but keeps the prices low (Zellen, 2004). This managerial move according to Zellen (2004) may have a detrimental effect on the company’s further growth. The reason why is because slowly in the USA (Dell’s biggest market) computers are becoming a commodity (e. g. Apple) and the market is moving on to the new level leaving all non-followers in a horrible financial struggle. Conclusion As we have seen so far, the bottom line of lean operations is: have flexible technology, break down operations to the basic elements, frequent materials movements, speed, and most importantly Simplicity.Without simplicity, companies like Dell that once where the leaders of l ean operations are expected to experience some profit losses in the near future. The reason is that the company has forgone some of the basic principles of the lean philosophy – Constant Improvement and Keeping things Simple.

Piece on “The lake” Essay

My head rested peacefully against the bark of the willow tree, my back floated on a bed of grass and my feet were gliding in the calm water of the lake, occasionally being nibbled by various fish. It was the perfect atmosphere to have a little nap; however I knew that if I fell asleep I would regret getting to admire the lake’s precious beauty on this spectacular day. The sky was as clear as sapphire, the sun was a rosy apricot colour and was surrounded by pillows of clouds and somehow my imagination managed to convince me that there were little angels dancing and prancing above them. The sky looked even more radiant in the lake’s refection; it added a glittery appeal to it, magical. I gazed wondrously towards the other side of the lake where the troop of trees stood, practically hugging each other. I enjoyed watching the giant trees sway with each other as if they were moving towards nature’s music. On my side of the lake, there was a choir of frogs chattering and birds chirping. I sang a little melody too, but the frogs and birds suddenly stopped, they must have disliked my tune. As I was about to rest my eyes a little, nature woke me up. The calming breeze tickled my ear lobes and I could faintly hear it whispering secrets to me. Every time the wind passed by, it left behind a scent of maple and berries so strong that it made my nose twitch. It smelt heavenly organic yet delightfully tasty. When I took a careful look at the lake, it looked similar to a heart shape; just one side was slightly bigger. The colour of the water was like an innocent girl’s eyes, so pure. It was a dark turquoise and if you looked  carefully you could see the luminous scales of various fish. Every now and then a heard of teeny tiny jump fish would be racing across the glowing surface of the lake as if they were being chased by the police. The lake was indescribably beautiful as it was but looking at what was on land around it was just the icing on top of the cake. Flowers bloomed as if they were living the last day of their life; bees flew as if there was no hurry; dears drank water as if there were no predators and birds sang as if they were in a symphony. The wind softly whispers through the trees as I rest on the soft green bed beneath me, peaceful feelings overtake me and my spirits seem to soar from within just like the birds circling above me.

Landlord & Tenant Law in the UK Law Essay Example | Topics and Well Written Essays - 3500 words

Landlord & Tenant Law in the UK Law - Essay Example Hence Lord Jenkins LJ had to assert that relationship was not decided by the label such as licence but by law, in his decision in Addiscombe Garden Estates v Grabbe.1 Later in 1985 Lord Templeman declared in Street v Mountford 2 that giving of exclusive possession for a period created tenancy. When the expiry date of the lease is passed, it is supposed to continue by operation of law facilitating security of tenure. The landlord in this case has not given any quit notice before expiry of the leases. As per section 24 (a) of the Landlord and Tenant Act 1954, Bertrand, the landlord should therefore give notice under section 25 of the said act to quit and in turn the tenants would give their counter notices asserting their rights of security of tenure as afore said and would apply to County Court for new tenancies. Bertrand can refuse security of tenure only on the following grounds. The above last three namely b, c, and d will apply provided the Bertrand is prepared to suitably compensate the tenants to move out. Unless Bertrand is ready to pay compensation as provided for, he can not successfully oppose tenants' applications in the court claiming security of tenure. ... (d)For the landlord's own self use of the premises either for business or for use as his own residence. The above last three namely b, c, and d will apply provided the Bertrand is prepared to suitably compensate the tenants to move out. Unless Bertrand is ready to pay compensation as provided for, he can not successfully oppose tenants' applications in the court claiming security of tenure. However if the lease agreements have already excluded the provisions of security of tenure, the tenants can not remain in the premises. If compensation rights have also been excluded in the lease agreements, they can not also claim compensation if lease renewal is refused by Bertrand. If the landlord is not opposed to new tenancy, he should send notice in Form 1 prescribed by the Landlord and Tenant Act 1954, Part 2 (Notices) Regulations 2004. The notice should state that the landlord is ending the existing tenancy and that he is not opposed to the new tenancy. The notice should contain new proposals for the new tenancy which he should offer to discuss with the tenant and also state that if they do not mutually agree to the proposals either of them can approach court of grant of new tenancy and settling the terms of disagreement between them. In case of the tenants wishing to approach the court, the landlord must set a date on the notice for doing so. The date can be extended by mutual agreement between them as set out in sections 29A and 29 B of the Act. In this case, question remains what happens if the land lord has not sent notice before the expiry of the lease. It appears that tenants should be careful enough to apply in the court by the said of expiry date failing which it will be fatal to their security of tenure right. If on the other hand, landlord does not want

Entreprenuership and small firms. How useful are the concepts of Essay

Entreprenuership and small firms. How useful are the concepts of enterprise 'push' and 'pull' in explaining the factors - Essay Example In developing countries particularly, the economic conditions drive many individuals to become entrepreneurs so as to redefine their economic conditions. The research field of entrepreneurship has been considered to be the major target of the most diverse area of study as presented by the enlarged range of theories and approaches and the trend is developing at a faster rate which is grounded on innovation, risk taking and proactiveness. The field of entrepreneurship has continually experienced attention from scholars leading to various theoretical frameworks being developed; however, new theories that are in line with the contemporary issues in the globe need to be developed (Islam, 2012, p.67). The growth of the business is influenced by the pull and push factors of starting a business. Entrepreneurs who start up a business out of the pull factors, such as desire to expand, will see their businesses growing successfully. On the other hand, entrepreneurs who are compelled into busine ss by, say, unemployment, the situation will not experience much growth. It is important to determine the major factors that influence entrepreneurs and make them start businesses since every business calls for different strategies and drive (Deakins and Freel, 2012, p.32). The growth and success of a business establishment will depend on the commitment made by the entrepreneur which usually differs in accordance to the motivating factors. Individuals with expertise, creative ideas, innovation, and demographic characteristics, including age and education of an entrepreneur, will influence establishment and growth of an enterprise. Young, energetic and highly educated entrepreneurs are served with advanced high-tech and knowledge required in running a business. The study endeavored to identify the concepts of enterprise ‘push’ and ‘pull’ that play a significant role in explaining the factors that influence the decisions of individuals to become self-employed and/or start up a business. This will help in understanding the reasons that motivate to become entrepreneurs and establish business enterprises. The findings from case studies indicates that the need for higher social status, profitability nature of the business, self-employment, need to make money, business tradition of the family and knowledge as well as personal experience are considered to be the pull factors (European Commission, 2012, p.1). Whereas, lack of formal education, dissatisfaction in previous occupation, family pressure and unemployment issues are considered to be the major push factors. Research Questions This paper intends to answer a number of questions including: 1. What motivates individuals to be entrepreneurs or enter into self-employment amongst the gender? 2. Is there a positive correlation between pull and factors and entrepreneurship? 3. Is the decision of starting up a business affected by gender, age, education, risk, finance, information availability and complexities of the entrepreneurship process? 4. Are women and the minority group predisposed to a unique pursuit of self-employment? Main Body The forces that propel individuals to set-up businesses despite the personal, financial and social risks that are associated with new venture are diverse. Individuals will decide to engage in businesses out of several motivations, some of which are positive and others negative. The positive factor â€Å"pull† and the negative factors ‘

Meeting the Customer Needs Essay Example | Topics and Well Written Essays - 3000 words

Meeting the Customer Needs - Essay Example ..8 The relation between the operation management and customer satisfaction†¦Ã¢â‚¬ ¦.8 Chapter 3: Understanding the gaps within the services†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦...9 5 Gap Model†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..10 Chapter 4: Assessment of the customer needs (Research work)†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.11 Questionnaire design†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..12 Chapter 5: Measuring the customer expectations from the survey†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..12 Recommendations†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚ ¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦......17 Conclusion†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.18 Appendix†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦....19 References†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦..22 Abstract: The market is incomplete if the customers are missing. The customers are the revenue generators for the business houses. For any business empire whether it is small or big, the primary focus is how to retain their existing customers and h ow to acquire new customers. To retain the existing customers the in-depth understanding of the customer needs is very important. ... Customer needs are the base of any business. However, the most important question is how to know the specific needs of the customers related to some specific products? The marketing research plays the vital role in this case. The survey design and the questionnaire design play the major role to identify the customer needs. Through the proper data collection and analyzing the data are the most appropriate way to find out the customer needs and to satisfy the needs accordingly. In this particular case the target organization is the McDonald’s. Introduction: Maintaining a great service quality and the product quality are all about understanding the requirements of the customers and delivering the tailor-made services to satisfy them. Understanding the customer behavior is another very important factor to be focused on. However, these are the basic rules to delivering satisfying services. The measurement of the steps taken towards the customer satisfaction is also very important. The primary and secondary data are important to support the outcome of the services related to the customer satisfaction. In regards to this research, the secondary data used are gathered from the Internet, journals and other publications in order to get basic information about the nature of the influences of the customer satisfaction. And the primary data are collected from the survey made from the sample size of 50 people selected randomly. McDonald’s has been taken as the target brand in this case. The whole paper is stratified into five chapters and each chapter has its own relevance to prove the importance of the customer satisfaction to win the customers. Chapter 1: The brief about the selected organization (McDonald’s): McDonald’s is

See Attachment Term Paper Example | Topics and Well Written Essays - 1750 words

See Attachment - Term Paper Example The goal of this essay is to explore the meanings of metaphors of house and used by a range of prominent American authors. William Faulkner, known for his sophisticated method of encoding his intended meaning in specific imagery and metaphors, is particularly keen on using house metaphors. Their meanings differ from one work to another, yet some tendencies may be distinguished. Analysis of the house metaphor in Absalom! Absalom!, William Faulkner’s most famous novel, provides insight into how the author perceives the house metaphorically. In Absalom! Absalom!, the image of a haunted house is clearly metaphorical. It is the dark pretentious house of the novel’s protagonist Sutpen that works as a metaphor of the â€Å"dark† South – obsessed with racial inequality and accumulation of wealth in dynasty. Thomas Sutpen, who was once born in poverty, comes to a town in Mississippi to purchase land, build a house on it, and start his dynasty. The overall sad story of Sutpen’s house is a metaphor for the South. Just as Sutpen and his son Henry despise black people and repudiate them, the white-dominated South does. Just as Thomas and Henry Sutpen lose their lives as obvious pay for their hatred and desire of â€Å"purity†, with their grandiose house set ruins by fire, the South, which hosted the oppressors and the oppressed, gets burnt down for inhumane treatment of its black children. Similarly to how Sutpen’s son Charles, who was born out of wedlock from a mother who had a small proportion of black blood, is murdered at the gates of the mansion, hundreds of black people are made to work to death or lynched on the basis of their skin colour difference. It is this injustice in combination with lack of humanity and excessive self-pride that have led the South to its destruction in the war and has literally set it ablaze. The house and its conceited owner Sutpen together with his â€Å"dynasty† are doomed to fall due to their inherent flaws, as the place where slavery blooms (i.e., the house) and as the source of inequality and racial hatred (i.e., Thomas Sutpen).Thus, house stands for a part of American land, the South, and has a range of negative connotations as a place of racial inequality, injustice, gloom, and decay. It also evolves as a symbol of doomed Southern worldview: anti-slavery, inhumane aims are doomed for ruination. In Tony Morrison’s novel Beloved, house evolves as a metaphor of environment that is supposed to be nurturing and liberating. It also comes as a metaphor of an unfulfilled dream of being free from slavery and safe. In addition, house represents a place where people summon their strength and create their strategies. Also, the house may stand for a hero/heroine’s soul and body, more likely to represent the inner state of the protagonist, though. It is also a symbol of freedom and safety. In the paragraphs to follow, these claims will be explained and supp orted by the evidence from the novel. In Beloved, home becomes the focus of quest by the novel’s protagonist young black woman Sethe. Sethe, as her life chronologically unfolds in the novel, finds herself constantly swaying back and forth between slavery, humiliation, danger, which may be referred to as her house of jeopardy; and freedom, safety, and dignified/happy living in a black community, which is perceived as her home. Sweet Home, the house of Mr and Mrs Garner, is

Evaluation week 7 discussion 6310 Assignment Example | Topics and Well Written Essays - 250 words

Evaluation week 7 discussion 6310 - Assignment Example al, the best method to evaluate the learning is through demonstrations of the oral methods of drug administration to different types of patients depending on their ages, conditions and instructions from the doctor. I will divide the class into several teams of two people each and then using the simulation dummies (where I will have attached notes on each of the â€Å"patient† to be administered drug to), I will monitor and evaluate on how each team performs its instructions (based on what I have taught in class) and then grade them (Billings and Halstead, 2012). The specific method I will use to evaluate is observation. This is the best in this case since the evaluation is based on demonstration and I will be keenly observing step by step what each team is doing based on the instructions and the notes on the patients’ bedsides about the patient. I will then be recording and making remarks about the observations so that I can analyze and explain to each team about their performance in achieving the learning objectives (Oermann, 2009). For each of the learning objectives of your lesson plan, create at least two test questions (or a comparable, specific means of evaluation, such as instructions for an essay assignment) that will adequately elicit whether the learner has achieved that objective. Offer a brief justification for these test questions or other elements—for instance, explain your choice of specific action verbs, or indicate how the instructions are designed to evaluate higher learning or critical thinking. For the first objective about identifying different ways to inculcate positive attitude during the drug administration, the two questions are: is the student portraying a positive attitude when administering the drug? How is the student being able to do that? Just observing whether the student is portraying a positive attitude during drug administration is not a mere reflection that he or she has been able to inculcate positive attitude and it is

Journal Essay Example | Topics and Well Written Essays - 250 words - 6

Journal - Essay Example When asked about my proposed research topic, which is bilingual education, all respondents, except James, disclosed that they do not know anything about it. James, on the other hand, indicated that awareness on the topic was in terms of recognizing that by being bilingual, you can communicate with the other people easily. When asked if they have any opposition to the topic, all responded none. Likewise, their responses to my question: â€Å"what experience, knowledge, and background do they have in my field including both positive / negative experiences†, they all responded none. The audience analysis thereby revealed that the proposed research topic on bilingual education could provide ample opportunities for the audience to enhance their awareness and knowledge on this. Further, since there were no significant oppositions to the subject matter, it is therefore a viable topic. Their demographic factors further indicated that the topic could generally appeal to various ages, status, and

Below Essay Example | Topics and Well Written Essays - 500 words

Below - Essay Example After deciding I wanted to commit myself abroad, I decided to enroll in the Paris Summer Program. I felt that this program would offer me a hand on opportunity for me to further enhance and test my control of the French language in real life experience, something that could only be achieved by working overseas. I also knew that this would also help me complete the requirements of my French major. Beside just this, I would also become integrated and introduced to a new and exciting culture, as well as the different ideas and thought patterns of the French people. I feel this is invaluable experience, and an experience that can only be truly attained by working with the culture first hand in that very country. This will also help me to expand my horizons as an International Relations major, and will help be learn how to work with other cultures, a valuable experience for one like me who wishers to further become involved in the field of International Relations. One of my aspirations an d greatest dream is to work with an international organization in Switzerland, which is a Francophone country.

Doping in Sport and the AFL Policy on Drugs Essay Example for Free

Doping in Sport and the AFL Policy on Drugs Essay Drugs in sport What is it? Drugs in sport or doping is when an athlete takes performance enhancing drugs or any banned substance. The sports that have the most trouble with drugs are Weightlifting, cycling, badminton, boxing, track and field. These athletes take drugs so they can be the best in there sport. One of the most recent cases was American sprinter Marion Jones who won five gold medals in the 2000 Olympics at Sydney, since then she has been stripped of all her medals after admitting that she took performance enhancing drugs in 2007. She had lied in front of two Judges saying that she never had taken steroids. Another case was Australian Cricket hero Shane Warne who was banned for a year after taking diuretics. Another one was former West Coast Eagle champion, brownlow medallist, and premiership player Ben cousins who was banned from playing football for taking cocaine and other banned substance. What is a drug? A drug is a substance (other than food) that when taken into the body, produces a change in it. If this change helps the body it is referred to as a medicine. If this hange harms the body, it is referred to as a poison. I think drugs in sport is terrible because these are highly paid professionals who are role models to so many kids and they are taking drugs to make them better at there chosen sport. These athletes are respected by there country and in my opinion should never be allowed to compete in there sport again. Some reasons an athlete might use drugs are the effects of the drug, physical dependence, easily available or they might be dissatisfied with there performance or progress, the environment, pressure to win from coach, parent, edia, public, financial reward, unrealistic qualifying standards or performance expectation. This is a list of some prohibited substances and doping methods: Stimulants Anabolic agent Non-steroidal Diuretic Many different sports have different policies on drugs. The AFL policy has been under a lot of scrutiny lately. The policy is as follows test: First positive Players enter treatment/education program coordinated by an AFL medical officer. The result is confidential to those involved in the treatment. Second positive test: Dealt with by and AFL medical officer with a view to further educating, counselling and treating the player. Third positive test: Player is deemed to have breeched an AFL rule and will face the tribunal if found guilty player may be suspended between 0-12 matches Fourth Positive test: Player will face tribunal and be suspended for no less than 6 weeks. I think this policy is way to easy on the players because they have so many chances. I think the player should have one chance and then be kicked out of the AFL for at least a year. Doping in Sport and the AFL Policy on Drugs By amdeep

The Mystery Of The Bigfoot Creature English Literature Essay

The Mystery Of The Bigfoot Creature English Literature Essay Bigfoot is a mysterious creature that is characteristic features very large, with feathers that cover the entire body. Bigfoot reportedly found in the regions of Canada and North America since the 19th century. In view of the trail leg is estimated weighed 400 pounds. Bigfoot is also known as Sasquatch or Skunk also sometimes called monkey. Sasquatch is a legend that circulated animals in North America. Bigfoot, which means big feet are huge creatures the remnants of ancient times. Predictably, these animals still live in snowy mountainous areas, including in the United States and the Himalayan mountains of China, and people believe these creatures can be found all over the world with the names of different, like the Yeti in Tibet and Nepal, Yeren in China and Yowie in Australia. Description Bigfoot experts suspect is a gorilla and a half men. Height two until four feet, walking upright on two feet. Fur thin gray with black head reddish. Numbered five toes, similar to humans and apes. Its weight reached 230 pounds. These animals have intelligence on the monkey, but far below the human. Bigfoot does not malignant, and even tend to shy. His face was friendly, as well as tame monkeys. These animals moved quickly away when meeting people. Viewed from the anatomy, the scientists suspected Bigfoot is Gigantopithecus animal species. This huge animal fossils are found in China. But there is also a declared Bigfoot is Homoerectus (apes walked upright). Bigfoot is considered omnivores because he ate the plants wild crops such as mushrooms, fruits, etc, fish, insects and animal flesh. Nickname Bigfoot Bigfoot named because no one had managed to see the original form. So far, people can only find traces of the giant legs. The giant footprints were first discovered a journalist from California, the United States in March 1999. That night he was driving to Oregon. In a lonely place, he stopped at a diner. Suddenly there was uproar. He ran to his car. A printed giant footprints around the car. He looked around, vaguely giant beast of about 2.5 meters tall in the middle of running the thick night. Since then the legend of Bigfoot began. There have been many kinds of names used to refer to a Bigfoot, among others: Bad Idians Mountain Devils Omaha Bushman Sasquatch Yeren Yeti (special for Bigfoot was living in Alaska who has a white fur). Footprints Bigfood Footprints of course very different from other animal footprints, because its much different characteristics, but Bigfoot footprints are very similar to human footprints, except that hers bigger Bigfoot. There have been many cases where people have found the large footprints of what are thought to be from the bigfoot. They are generally found to resemble human footprints, except they are much larger. If the footprints are not man-made for the purpose of hoaxing, then it can be assumed in many cases that the creature that made them are quite large. In 1958 and 1959, Bob Titmus found several tracks in the area of Bluff Creek, California, later to be made famous by the Patterson / Gimlin film footage. In 1988, wildlife biologist John Bindernagel found many tracks, some of them 16 inches long. Most recently, on the Science Fiction channels television show called Destination Truth, host Josh Gates found a large track in the Himalayas. Smells and Sound Many people who claim to have had close encounters with Bigfoot say that there is quite a stench associated with the creatures. The smells have been described as a cross between that of a skunk and rotting meat. In one case a man by the name of Sean Fries claimed to have such a meeting in June of 1988. He said that something woke him up one night while camping, and that when he went outside he was assailed by an unbelievable smell. He says he believes Sasquatch was nearby. Sometimes people claim to have heard the sounds of Bigfoot. They say the noises are not like anything heard in nature. Some people say that the noises are different for different geographical areas. There have also been claims made that people have heard these creatures communicating with one another with a series of whoops and chirps. People around the Himalayan Mountains are often heard roaring sound. KAPPA kappa_mummy_3.jpg In the mythology of Japans Shinto religion, there is a legend about a creature identified as the god of water. The creature called Kappa. However, unlike any other mythological creatures, this time, there are at least 4 mummy Kappa stored neatly in Japan and the Netherlands. Description Kappa story first appeared in the Nihon Shoki ancient records from the year 720 AD. In the document, Kappa called Kawa no kami. In the Edo period, Illustrations of Kappa appeared in anthologies and paintings. In 1910, Kappa started getting popularity after a story titled Tono Monogatari published. In the telling of stories about the legendary creatures, including some Kappa. But at this time, Kappa is described as more of a cartoon character with a funny character. Kappa sometimes described as an evil creature, but many legends told about Kappa as being a good and intelligent treat. If he was captured and asked to promise not to harm people again, he would keep his promise. Nickname Kappa Kappa is often identified as the god of water has a variety of titles. Another name from this creature of them is Kawataro (water boy), Kawaka, Kawaranbe, Kyuusenbou, Masunta, Mu Jima and Ningyo. Characteristics of Kappa Kappa is described as having the shape of a snake, dragon, eels or turtles. Kappa bodied like a child, faced monkey, a shell in the back, long hair and scaly skin is yellow green. Despite its size as a child, Kappa is a great strength. He dared to attack a horse and able to attract prey larger in the water. Some records say this creature can change colours like a chameleon body. This creature also has a smell like fish and hates loud and metal objects. One unique feature of the Kappa is the existence of a cavity without a cap on his head. This round cavity filled with water becomes a source of strength Kappa. Kappa can be found in lakes, rivers, springs and even the irrigation canal. The main habitat in the region spread Kappa Kyushu and Honshu river in Sarugaishi. SHORT PEOPLE (Hominid Mini) 28654_homo_floresiensis.jpg Short people are the most famous creatures in cryptozoology Indonesia. It is said that according to witnesses he had a body like an ape, but walk like a human. Unlike the American Bigfoot, the short person really fit with his name. This creature has only a high less than 1 meter. Description Short People are creatures who believe life cryptozoolgy spread in some areas such as Sumatra, Bengkulu, Palembang and Jambi. Legend of short people began to sound early 20th century. On August 21, 1915, Edward Jacobson found a set of mysterious tracks at the edge of the lake Bento, in the southeastern mountains Kerinci, Jambi Province. Guide called Mat Getoep said that traces of 5 inch long is the property of Short People. In December 1917, a plantation manager named Oostingh Short People met in a forest near Bukit Kaba. When the creature saw him, he stood up and calmly walked a few yards and then climbed into the tree and disappeared. Nickname Short People Other names often associated with short people, among others: Atu Short, Ijaoe, Sedabo, Sedapa, Sindai, Uhang Pandak, People Letjo and People Gugu. Characteristics of Short People This creature has a high only around 70 cm, surrounded by dark fur. But his face was not covered with feathers relative. Sometimes the witnesses heard strange noises coming from his mouth. At first, many researchers suspect that this creature really is a monkey or ape. But the witnesses description of the behavior and way of operation is not in accordance with the behavior of apes or gibbons. Moreover, the footprints are found suggest that these creatures are not classified into the known primates. CADBOROSAURUS dillcaddy3.jpg Cameron Lake is a popular lake located in British Columbia, Canada. The extent of approximately 4.5 km2 and the depth of about 70 meters. In the lake are living different kinds of fish such as salmon and trout. This lake does not freeze during the winter and the lake is also the tourists and residents about reports of mysterious creature that is sometimes visible to the surface. Description Many people say that the creature in the lake is cadborosaurus Cameron. Cadborosaurus is a mysterious creature shaped sea snakes. Its name is derived from Cadboro Bay in Victoria, British Columbia, and the Greek root word sauros meaning lizard or reptile. In 1937, a fisherman found the carcass of a Cadborosaurus in the belly of a pope in Cadboro Bay in Victoria. Characteristics of Cadborosaurus Cadborosaurus is said to resemble a serpent with vertical coils or humps in tandem behind the horse-like head and long neck, with a pair of small elevating front flippers, and a pair of large webbed hind flippers fused to form a large fan-like tail region that provides powerful forward propulsion. Story At that time, a woman and her father who was driving the car at the side of the lake said she saw a long black creature swimming in the lake. But the appearance of the report was not too memorable to the public until other sightings were reported on July 30, 2007. At that Bridgette Horvath was driving his car when he saw a suspicious water turbulence in the lake. He did not see any boats on the lake. So it must have been caused by turbulence in the water something. Horvath pulled over his car and walked toward the lake with camera in hand. Then, he returned to see the turmoil in the water. Without wasting time, Horvath took a picture immediately. Shaped like a snake. He said. The object was not a log, nor the waves because there is no ship at the time. In fact, you could see something like a large fish, the object was a living thing he went again. Photographs taken immediately decorate Horvath headlines-headlines in the media world. Since then, a mysterious lake creature Cameron got a name, Cammy. But according to the opinion of some other Cryptozoologyst, there is a Cammy possibility Cadborosaurus. TENGU mummy10.jpg In Japan, there are legends about a mysterious alien, which is being considered as the devil and the body is described as having half bird and half human. This creature is called by the name of Tengu. Remarkably, a Tengu mummies stored neatly in Aomori prefecture. Museum of Hachinohe in Aomori, northern Japan, is home to a supposedly Tengu mummy was originally owned by Nambu Nobuyori, Nambu clan leader who ruled Hachinohe in the mid-18th century. Tengu who has become a mummy is believed to come from the city of Nobeoka (Miyazaki prefecture) in southern Japan. Some theories say that the mummy was reached northern Japan after a passed to several family members of the ruling Japanese Samurai, until at last reached the Museum of Hachinohe in Aomori. Description Tengu mythology originated from around the 6th century AD in line with the arrival of Buddhism to Japan from China. Tengu considered a goblin who lived in the woods and mountains. They called to have such supernatural powers can be transformed into the human or animal, can talk to people without opening his mouth and capable of moving from one place to another quickly use their wings. Tengu word actually means dog heaven. In Chinese mythology, this creature has its place with the name of Tien Kou (Tiangou) which means the sky dogs. This name is not in accordance with the description of Tengu. This creature has no way as a dog, but more like a bird. Characteristics of Tengu Tengu has a human head, but has hairy legs and wings like a bird. Tengu has two physical forms. The first is called Karasu tengu who has a head and beak like a bird. The second was a Konoha tengu who has a form like men but have wings and a long nose (sometimes called Yamabushi tengu). CRISTAL SKULL mhcs01_5.gif There is a genuine American legend that says the 13 human skulls made of crystal that can talk and sing. According to legend, the crystal skull contains answers to some mysteries of the world and life. The legend also says that one day, when mankind experienced a major crisis, then the 13 skulls will be rediscovered and once again collected to provide knowledge and information vital to humanity. Story Crystal skull was first discovered in the ruins of Maya cities and buried deep in dense forests. In 1924, British explorer, Frederick Mitchell-Hedges and his colleagues are adventurous, trying to find the remains of the legend of Atlantis in Belize, Central America. One day, when they were walking through dense forest, they found a pile of rocks covered with thick grass and bushes. The rest is history. The group found a city that has long Lubaantun lost, which in Mayan language means the city tumbled stone. Throughout the excavations at the site, adopted son of Mitchell-Hedges, who called her said that she had found a skull made of crystal buried under the altar in one of the ruins of a pyramid-shaped temple. Told, when the skull was found, the Mayan workers immediately filled with a leap of joy. They immediately put the skull above the altar, ritual and dance around it. Apparently, an ancient and supernatural power has returned into the lives of these people. The skull is entirely m ade of transparent crystal. Its size just like a human skull size and very accurate in the anatomy shown with a separate jawbone. Anna Mitchell Hedges skull was found died in 2007 at the age of 100 years. He had kept the skull in his life. Anna believes that the skull had given him strength and health until she was 100 years old. Some people who have spent time with the skull was also admitted to having some strange experiences, like the sound of soft, like a humming out of the skull. And sometimes they could see flashes of images of the past and future are reflected from the skull. Surprisingly, the crystal skull of Anna Mitchell Hedges, not only crystal skull was found. Since this discovery, several other skulls had been found as foretold by ancient legends. Currently there are at least six other skeletons that are stored in museums world-renowned. All these skulls are still unknown origin. Most owners believe that the skull came from Middle America, whether it is from the Maya, A ztecs, or even interest from the period before the Maya is a mysterious tribe of Atlantis. MOTHMAN mothman.jpg On September 11, 2001, the WTC twin towers were hit by two airplanes. The twin towers collapsed, flat on the ground. All eyes of the world look at the event. Of course, these events changed the world of terrorism. However, when the collapse of the twin towers, a mysterious creature caught on camera was flying around the building. Description Mothman is the name given to a creature that was reported seen in Point Pleasant, West Virginia among 12 November 1966 until December 1967. Many witnesses stated that the Mothman is a winged creature like the moth, the size of a human high and the most prominent are the two red eyes glowing. Sometimes there are several witnesses who say that the creature had no head and eyes in the chest. Story The first testimony about the Mothman came on 12 November 1966 of 5 men who were in a local cemetery to prepare a burial ceremony. When theyre working, they realize that there is a human-shaped creature that emerged from the dark between the trees and then flew over their heads. Another report came from two pairs of young couple from Point Pleasant named David and Linda Scarberry and Steve and Mary Mallette. One night on November 15, 1966, they are traveling on the night with Scarberrys car. They passed a factory area in western Virginia named TNT. The name was given because during the Second World War, the plant was used as an ammunition manufacturing location. As they passed the area, they saw the two big red eyes in the darkness of the night near the factory gate. They stopped the car and finally realized that both the red light is a single pair of eyes belonged to a strange creature. In the description, they say, The creature has a height and shape as humans, probably about 1.8 meters tall and has wings folded on its back. The next testimony came from Couple Raymond Wamsley and Mrs. Marcella Bennett. When they were about to drive to visit their friend Ralph Thomas, they are aware of a figure appeared behind their car was parked. According to Mrs. Bennett seems the creature was lying and then slowly rose from the ground. Its looks great with a gray pair of glowing red eyes and wings folded on its back. Mrs Bennet was so frightened that she dropped the babys arms. While Wamsley phoned the police, the creature disappeared. Mothman appearance outside Ohio and Virginia that are in the UK recorded along the road near the village of Sandling Park, Kent on November 16, 1963. Four of the farmers see the animals moving from the sky and disappeared behind the trees not far from them. Because of fear, they ran, but stopped after seeing the oval of golden light floating a few feet above the field. They described the object as a UFO. Suddenly, accompanying the appearance of it, a dark shadow walked and went to the breeders. The shadow was the property of a dark black creature, as tall as humans, without a head and wings like bats. They were so scared and could not move, and then the creature vanished. EL CHUPACABRA Bg_chupacabra.jpg Description The most common testimony about the chupacabra is a creature like reptiles, have skin glaucous and flow back from the neck to tail. Height of about 1-1,2 meters and standing or jumping like a kangaroo. At least one appearance reported that he jumped as high as 6 meters. Other testimony said the creature resembled a dog / panther without fur and fangs long and smells of sulfur. History chupacabra According to the reliefs found in Europe, some researchers connect the chupacabra with gargoyles, creatures that are part of European history and associated with evil spirits. Currently chupacabra have a place in the legends of Latin society. In 2005, Isaac Espinoza spent about $ 6 million from his pocket to investigate the chupacabra. He stayed for eight months in Latin America in the woods with her team. Several times they had encounters with strange creatures like chupacabra. They filmed the creature several times and took samples of hair and skin that had obtained to the University of Texas for analysis. The result is that the creature is not of a kind known today. Report Appearance In April 2006, MosNews reported that the chupacabra seen in Russia for the first time. The report mentions the existence of a strange creature that attacks cattle and sucking their blood. The next report came from a neighboring village who said that 30 sheep were killed and their blood becomes dry. On January 2008 chupacabra reported seen in the province of Capiz in the Philippines. Some local residents believe that the chupacabra has been killed eight chickens. The owners of the chickens are seeing an animal resembling a dog that attacked his chickens. NESSIE 293.jpg Nessie is a familiar call for the Loch Ness Monster, which beings are not yet identified, is said to live on a lake in Scotland called the State Lake Loch.Nessie usually categorized as Lake Monster. This monster is one of the estimated beings purabakala can survive the extinction of the dinosaur era and there earth. Nessie also one of the mysteries of animal other than Bigfoot and Yeti Monster. Description Nessie many close relatives associated with Plesiosaur, which is kind of long-necked dinosaur that lived in water. Its including carnivorous species. Because their habitats in the water made them eat fish. Story One set of researchers from the BBC in July 2003 and arrived at the edge of Lake Loch Ness, Scotland. Their presence in the lake area of 56.4 square miles that aims to uncover the mystery that has for too long confused the public, not just the population in Scotland but throughout the world. It was a very long mystery sounds, dozens of sightings have been made the story from the mouths of witnesses, but the actual existence of a giant lake at the bottom of Loch Ness is still the enigma that is not endless. Some time, the researchers enjoy the view of reconciling the lake Loch heart. In silence, they may ask questions, there is really a giant lurking beneath the surface of the lake water? Is a giant lake that is often called Nessie really exist?. He had long been charged inhabit the lake Loch and many local residents claimed to have seen him since his first appearance around the sixth century. However, more often hide Nessie herself. Centuries passed, Nessie eventually become local le gend. The story of the legend that started back when the worlds attention on July 22, 1933, when a man named Spicer and his wife startled to see a huge creature crossed in front of them. They saw the giant long-necked creature moved toward the lake before disappearing in the thick bush on the contrary. The story of the couple is then spread rapidly, not only throughout Scotland but that all over the world. Parties interested in the story of a giant lake, Loch began offering a tempting prize for anyone who can capture the mysterious creature, living or dead. Even a tycoon, Bertram Mills offered a sum of money of   £ 20,000 to anyone who caught and handed over to him. Since then, reports by successive reports made by the witnesses who claimed to come back to see the giant creature Nessie. Among them are reports of a resident named Grant, he claimed to have seen a huge creature figure at 1 am, January 5, 1934. When the area along the lake, Grant recounts seeing a large object ca me from the edge of the lake. However, these creatures then became aware of Grant and immediately headed toward the lake. Grant then rushed off the boat and motorcycle chase him, but he was only able to see the ripples on the lake after the creature dive into it. OGOPOGO 65.jpg Ogopogo is an intimate call for a lake monster named Canadas Lake Okanagan. Topics for discussion about the existence of mysterious creatures Okanagan Lake has been heard the story since 1850, where at the beginning of the year for the first Ogopogo reveal itself to the tourists and local residents. Description According to witnesses who saw it said that a creature with a large build, dark colour and has a long body shape have emerged surface water and swim down the middle of the lake. It happened in a long time, so they can be freer to observe and identify the creature. According to them, the creature is not a snake, even though few have the same shape on his body. That snake has no registration body size and all these creatures. Many people who listened to the witnesses actually booed them, maybe the creature was indeed a snake, but exaggerated the drawing figures, which became a sensational thing. Report Appearance 1872 Ogopogo appears in this year, two American tourists Mr. and Mrs. Allison is a person who reported appearance. 1947 Ogopogo again reveal itself, but its appearance at this year is remarkable because it moves toward the side of the lake to show you how to swim like a moving body, but not until a few moments later the creature back into the bottom of the lake. This incident was witnessed by at least a dozen witnesses FLYING ROD kiri.jpg Rod, sometimes referred to as fishing heaven, is a new interest in the field of cryptozoology. He is a creature who flew and spun at high speed so elusive to the naked eye. The only evidence of the rod is catching images by the camera because the cameras ability to capture a more accurate movement. Rod sightings occurred in almost all the world. Description Rod called because the shape of his body likes a stick. From the observation by the camera, it can be concluded that the long-Rod between 10 cm to 5 meters. And Rod can also control the direction of flight just like birds or insects. Rod has a body like a thin membrane like a jellyfish, including their axis bones. Some claim that Rod is the animal that has not known and probably still flying anomalocarids family. Results Appearance Recorded a pair of Rod clearly flying out of the cave. 48.jpg Rod White is flying near the tree trunk. 44.jpg Human Blue 266.jpg Legend of Blue-skinned man who was recorded in the history of Kentucky, America is a thing that interested me. Especially if associated with a variety of beliefs about the blue people from various parts of the world. Story This happened 6 generations ago, when it was a French orphan named Martin Fugate got a land grant in 1820 and moved to Eastern Kentucky area, known as the Troublesome Creek. Martin married American woman, Elizabeth Smith, who had red hair and very white skin, white as snow. Fugates family has 7 children, and 4 of them blue-skinned. This family grew in number, as fellow members of Fugates family to marry one another. Marriage between cousins is often the case, Fugates family also married with families of their neighbours. These communities live in remote areas that do not have the infrastructure. The children of blue-skinned Martin finally married to the brother of their mother. Zachariah, a blue-skinned son, married to the mothers siblings, and produce combinations of genes that 100 years later became the cause of Benjy Stacys birth with a purplish blue colour! As a family doctor was astonished at Benjys condition, they explain the story of Benjys great-grandmother, the Luna Fugate. Family says, Luna is a woman who very blue, the blue woman who ever lived. Lunas father is a Levy Fugate, son of Zachariah. Levy married a Ritchie girl and family 200 are purchased land in Ball Creek. The couple had 8 children, including Luna. A young man named John Stacy met Luna at worship weekly at a local Baptist church. Stacy Luna then married and they moved to Ball Creek. Stacy still remembers a father figure-in-law, Levy Fugate who has blue skin colour. All men from the blue-skinned were Luna family. And they dubbed The Blue Fugates. Carrie Lee Kilburn, a nurse at the hospital, recalled Home place Centred Luna and his family as the blue-skinned people. Lunas blue-skinned. Colour dark blue lips, like a bruise. Women were blue Ive ever seen . Stacy Luna has a health condition, gave birth to 13 children and died in old age, 84 years old. Luna is known as an energetic and rarely went to the clinic for treatment. Benjy Stacy was born in a modern hospital near Hazard, Kentucky, not far from Troublesome Creek. Benjy inherited the red hair colour of the mother. But, his great-grandfather of skin colour also declined her! Benjys blue skin. The doctor was surprised, but Benjys parents did not. The doctors send Benjy to be tested at the Faculty of Medicine, University of Kentucky. After 2-day inspection, found no cause for the blue colour. After a history of skin Benjys blue in the family is known, the doctors concluded that this condition decreased. However, the blue gene in Benjys body is not as strong as his great grandfather. In a few weeks, the colour of Benjys blue skin began to fade and become normal. However, in a state of anger or too cold, nail and lip colour purple Benjy. OARFISH 20081215-Oarfish3 012 sm.jpg In the past, when cars and airplanes not exist, the travellers explore the world by ship. And since then came the legendary sea monsters extraordinary. Do these monsters really exist? or just a fantasy of a drunken sailor? Although science cannot determine with certainty the identity of these monsters, but at least there are some prime suspects who could be considered. This is one of them, Regalecus Glesne or Oarfish. Description These fish belong to the category of rare and very seldom seen. So rare that the fish is never caught camera alive until the year 2001. He belongs to the family who has Regalecidae four species. One species, Regalecus Glesne, were talking about this, never entered into the Guinness Book of World Records because it has found that living with a body length up to 11 meters. The food is plankton and sea creatures small. He was able to live to a depth of 1000 meters. Strangely, this fish has no scales. His body was covered only by a kind of membrane, called guanine. This fish has a red single fin and includes a loner fish. However, when these fish are sick or dying, like the loner is not want to die in loneliness. So he climbed into the top surface of the sea and stay there until death. Maybe they want to attract the attention of the sailors, or just want to look at the sun for the last time. Oarfish.jpg

Shes Come Undone: Female Voice :: Shes Come Undone

She's Come Undone:   Female Voice  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚     Ã‚  One of the most interesting aspects of She's Come Undone is the fact that it is written by a man but is told from a female's point of view. Because of his gender, it is impossible that Lamb could have experienced many of the hardships that Dolores must deal with in his novel. However, Lamb writes with a certain understanding of Dolores and her pain. In She's Come Undone, Lamb addresses issues often avoided by male authors, including female friendships and abortion. His convincing female voice has been critically acclaimed. Lamb writes about female friendships as if he has experienced them first-hand. His knowledge of the extreme trust that exists in these relationships is exemplified through the friendship between Dolores and Roberta. Dolores tells Roberta of her rape even before she tells her own mother (Lamb 112). It is only through Roberta's companionship that Dolores experiences true happiness. When Roberta comes to live with her, Dolores finally feels secure with herself and her surroundings (419). Roberta and Dolores each provide much needed encouragement for the other (422-423). Dolores takes care of Roberta during failing health, and Roberta provides Dolores with encouragement to continue her education and move on with her life. On the other hand, Lamb addresses the negative aspects of female friendships. This is best exemplified in the relationship between Dolores and Kippy, her college roommate. Dolores feels the need to impress Kippy. She writes a letter that presents a false but seemingly more attractive persona (146). She is too insecure to comfortably present her real self. Dolores is rejected by the other girls at college because of her physical appearance. The first person to befriend Dolores is the dorm janitor, Dottie. When Dolores realizes that the other girls in her dorm do not approve of Dottie, Dolores abruptly ends their friendship (201). Dolores and Roberta's friendship also has its negative points. After a petty argument, Roberta falls and is hospitalized. Dolores feels that she is solely responsible. Lamb realistically describes the guilt that can accompany some female relationships. Another area in which Lamb exhibits a certain expertise on womanhood is abortion. Many argue that women react differently to such an event than men do. Dante says that he is in mourning, but he can still go about his day everyday activities. His life does not alter in the slightest (340).

Find the concentration of sucrose in a potato cell - Plan :: GCSE Biology A2 A-Level Coursework

Find the concentration of sucrose in a potato cell - Plan Plan For Osmosis/Plasmolysis Experiment AIM In this experiment, I am trying to find the concentration of sucrose in a potato cell. Also I can observe when a cell is totally plasmolyised. PLAN I plan to complete this experiment within an hour. Firstly, I will cut 15 potato chips, 3 each for 5 different solutions, each weighing 1.2grams, cut with a 4mm corer to approx (full word) 4cm. I will measure weight, as length is less accurate. The weight of the chip may vary as much as 0.02 g each way, which will make it a lot easier to do, but may provide me with less accurate results. I will use 5 different molar solutions of 20 cm3 each, shown to the right. 0M (water), 0.5M, 1M, 1.5M and 2M. I will create 0.5 molar solutions by mixing 10cm3 of water and 10cm3 of 1 molar solution. I will use 3 of each solution to ensure that my results are correct, and to prevent any anomalies disturbing my result graphs. One of each solution will be dropped into the solution at 10-second intervals. They will be taken out 30 minutes after precisely, to ensure a reliable result. They will then be dried on a paper towel, and quickly weighed, and recorded in a pre-written table. RELIABILITY/ FAIR TEST I must control many variables in this test. I will control the time that they are left in the solution, as this will greatly affect results if they are left in for different amounts of time. Also I must control how much I dry the chips before weighing them, because if I leave some excess water on one of them, it will be an unfair test, as ill be weighing the water as well as the chip. Another point is simple, but just to make sure that the scales I am weighing the chip on are at 0 before weighing the chip, as it may add some mass to the chip. I will use 5 different solutions, starting at 0 molar and going up in 0.5 molar concentrations. I have chosen this because they are equidistant, allowing for easy graph drawing, and also because from the preliminary experiment, I know that this will give me results that can show me the concentration of sucrose in the cells sap, and also go on to show me the concentration that the cell will plasmolyise at. I will also control the variety of potato- I will only use 1 brand, as

Plc Programmable Logic Controller

AUTOMATIC CONTROL OF HYDRAULIC SYSTEM USING PLC * Company Products & Services * Abstract * Hydraulic System * Bow Compression Machine * Circuit Diagram * Description * Chiller Unit * Solenoid valve * Introduction To PLC * Software * Advantages Of PLC * Introduction To PLC * Existing System * Proposed System * Ladder Logic Diagram * Ladder Logic Description * Energy Saving Calculation * For Existing Method * For Proposed Method * Advantages & Applications * Conclusion * References ABSTRACT :One of the challenging factor in factories, for the proper functioning of the machine for the long duration with efficiency is to keep certain parameters within a specific range. Thus, in this paper, we have designed a ladder diagram for running PLC with the objective to automatically control the hydraulic system. Our main requirement is to design a PLC which can be connected to hydraulic system to implement the parameters and operations like Temperature detection, Pressure detection, Lubrication, Automatic machine operation and Oil level detection.The mentioned parameters and operations can be sensed and operated through PLC without any manual checking and operation. This saves more power to industries by reducing the power consumption. INTRODUCTION In the last decades, the machines used in the industries were operated manually. So keeping its certain important parameters in a specific range was difficult. Also they can not be checked out frequently. This results in improper functioning of the machine. Also, the machines cannot work efficiently for a long time.For example, if the temperature of the oil goes beyond the desired value it will affect the machine function. Hence the machine accessories cannot withstand this high temperature. This leads to the damage in machine and the durability of the machine also gets reduced. Thus, the working machine requires frequent checking of certain parameters to maintain the value within the specified range for proper operation. The var ious parameters to be checked frequently are: 1. Temperature detection 2. Lubrication 3. Automatic machine operation 4. Oil level detection . Pressure Thus we are using a PLC to control all these parameters. We are designing a ladder diagram to control all the parameters automatically. In this paper, we are describing about the hydraulic drive system in which PLC is used to control its working. An introduction of PLC is provided and also the ladder diagram overview. We will be discussing about the advantages of PLC and also the power saving estimation in the industries by using PLC. The machine which we have taken under consideration for implementation is BOW CORRECTION MACHINE.Also, the chiller unit is described as it plays a major role for the power saving purpose. HYDRAULIC DRIVE SYSTEM : A  hydraulic drive system  is a drive or  transmission  system that uses pressurized  hydraulic fluid  to drive  hydraulic machinery. The term hydrostatic refers to the transfer of energy from flow and pressure, not from the  kinetic energy  of the flow. Principle of a hydraulic drive Pascal's law  is the basis of hydraulic drive systems. As the pressure in the system is the same, the force that the fluid gives to the surroundings is therefore equal to pressure ? rea. In such a way, a small piston feels a small force and a large piston feels a large force. For an understanding of how a hydraulic system works, we must know the basic principles, or laws, of hydraulics, that is, of confined liquids under pressure. This will be made easier, however, if we first examine the somewhat simpler laws governing the behavior of liquids when  unconfined, that is, in open containers. 1. Liquids in open containers. a. Density and specific gravity. The first characteristic of an unconfined liquid which interests us is its density.The density of a fluid is the  weight of a unit volume of it. The unit of volume normally used in this text is the cubic foot; the unit o f weight normally used is the pound. The standard of density, to which the densities of all other liquids are referred, is that of pure water at zero degrees centigrade (32 degrees Fahrenheit), and at sea-level atmospheric pressure. b. Force and pressure. A liquid has no shape of its own. It acquires the shape of its container up to the level to which it fills the container. However, we know that liquids have weight.This weight exerts a force upon all sides of the container, and this force can be measured. Therefore, for unconfined liquids, that is, liquids in open containers, the pressure in pounds per square inch exerted by the liquid on the bottom of the container is equal to the weight of the liquid on each square inch of the bottom of the container. It must be emphasized that the  weight  of the liquid is here thought of as a  forceexerted on the bottom of the container. Expressed as a formula, we have: Pressure = Force per unit areaIt is understood that the word pressure , when not otherwise qualified, means  pressure in pounds per square inch. This is called the total force and is obtained by the formula: Total Force = Pressure X Area The pressure exerted by a liquid on the bottom of a container is independent of the shape of the container, and depends only on the height and density of the liquid. 2. Liquids in enclosed systems. a. Liquids are practically incompressible. The following two basic principles will help to explain the behavior of liquids when enclosed: a) Liquids are practically incompressible. ) The applied pressure is transmitted equally in all directions at once. b. Increase of force with area. The ratio between the  force applied to the smaller piston  and the  force applied to the larger piston  is the same as the ratio between the  area of the smaller pistonand the  area of the larger piston. Expressed as a proportion, then, we have: Force on larger piston/Force on smaller piston = Area of larger piston/Area of small er piston This means that the mechanical advantage obtainable by such an arrangement is equal to the ratio between the areas of the two pistons.Since the area of the larger cylinder is 10 times as great as that of the smaller cylinder, pushing the smaller piston downward a distance of 1 inch will move the larger piston upward only 1/10 of an inch. The ratio between the displacement of liquid in the smaller cylinder and the displacement of liquid in the larger cylinder is once again equal to the ratio between their areas. so that the amount of work (force X distance) done by the larger piston is exactly the same as the amount done by the smaller piston. c. Multiple units.It is not necessary to confine our system to a single line from the source of hydraulic power. Hydraulic power may be transmitted in many directions to do multiple jobs. PUMP – In practice we usually need some device which will deliver, over a period of time, a definite volume of fluid at the required pressure , and which will continue to deliver it as long as we desire it to do so. Such a device is called a  pump. Basic principles of pumps. A hydraulic pump is a mechanical device which forcibly moves, or displaces, fluids.Various pumping principles are employed in the different types of hydraulic pumps, but one fundamental principle applies to all: a volume of fluid entering the intake opening, or port, is moved by mechanical action and forced out the discharge port. Hydraulic fluids. Almost any free-flowing liquid is suitable as a hydraulic fluid, as long as it will not chemically injure the hydraulic equipment. For example, an acid, although free-flowing, would obviously be unsuitable because it would corrode the metallic parts of the system. a. Basic units of a hydraulic system. 1.A reservoir, or supply tank, containing oil which is supplied to the system as needed and into which the oil from the return line flows. 2. A pump, which supplies the necessary working pressure. 3. A hydra ulic cylinder, or actuating cylinder, which uses the hydraulic energy developed in the pump to move the door. 4. A cut-out valve, by means of which the pressure in the actuating cylinder may be maintained or released as desired. 5. A check valve, placed in the return line to permit fluid to move in only one direction. 6. â€Å"Hydraulic lines,† such as piping or hose, to connect the units to each other.The supply tank must have a capacity large enough to keep the entire system filled with oil and furnish additional oil to make good the inevitable losses from leakage. The tank is vented to the atmosphere; thus atmospheric pressure (14. 7 pounds per square inch) forces the oil into the inlet, or suction, side of the pump. The tank is generally placed at a higher level than the other units in the system, so that gravity assists in feeding oil into other units. The pump is the hand-operated, reciprocating piston type. SOLENOID VALVE : A  solenoid valve  is an  electromechan ically  operated  valve.The valve is controlled by an  electric current  through asolenoid: in the case of a two-port valve the flow is switched on or off; in the case of a three-port valve, the outflow is switched between the two outlet ports. Multiple solenoid valves can be placed together on a  manifold. Solenoid valves are the most frequently used control elements in  fluidics. Their tasks are to shut off, release, dose, distribute or mix fluids. They are found in many application areas. Solenoids offer fast and safe switching, high reliability, long service life, good medium compatibility of the materials used, low control power and compact design.There are many valve design variations. Ordinary valve can have many ports and fluid paths. A 2-way valve, for example, has 2 ports; if the valve is  closed, then the two ports are connected and fluid may flow between the ports; if the valve is  open, then ports are isolated. If the valve is open when the solenoid is n ot energized, then the valve is termed  normally open  (N. O. ). Similarly, if the valve is closed when the solenoid is not energized, then the valve is termednormally closed. [1]  There are also 3-way and more complicated designs.A 3-way valve has 3 ports; it connects one port to either of the two other ports (typically a supply port and an exhaust port). Solenoid valve are also characterized by how they operate. A small solenoid can generate a limited force. If that force is sufficient to open and close the valve, then a  direct acting  solenoid valve is possible. An approximate relationship between the required solenoid force  Fs, the fluid pressure  P, and the orifice areaA  for a direct acting solenoid value is: Where  d  is the orifice diameter. A typical solenoid force might be 15  N (3.   lbf). An application might be a low pressure (e. g. , 10 pounds per square inch (69  kPa)) gas with a small orifice diameter (e. g. ,  3? 8  in (9. 5  mm) fo r an orifice area of 0. 11  sq  in (7. 1? 10? 5  m2) and approximate force of 1. 1  lbf (4. 9  N)). When high pressures and large orifices are encountered, then high forces are required. To generate those forces, an  internally piloted  solenoid valve design may be possible. [1]  In such a design, the line pressure is used to generate the high valve forces; a small solenoid controls how the line pressure is used.Internally piloted valves are used in dishwashers and irrigation systems where the fluid is water, the pressure might be 80 pounds per square inch (550  kPa) and the orifice diameter might be  3? 4  in (19  mm). In some solenoid valves the solenoid acts directly on the main valve. Others use a small, complete solenoid valve, known as a pilot, to actuate a larger valve. While the second type is actually a solenoid valve combined with a pneumatically actuated valve, they are sold and packaged as a single unit referred to as a solenoid valve.Piloted valv es require much less power to control, but they are noticeably slower. Piloted solenoids usually need full power at all times to open and stay open, where a direct acting solenoid may only need full power for a short period of time to open it, and only low power to hold it. A direct acting solenoid valve typically operates in 5 to 10 milliseconds. The operation time of a piloted valve depends on its size; typical values are 15 to 150 milliseconds. Solenoid valves are used in  fluid power  pneumatic and hydraulic systems, to control cylinders, fluid power motors or larger industrial valves.Automaticirrigation sprinkler  systems also use solenoid valves with an automatic  controller. Domestic  washing machines  and  dishwashers  use solenoid valves to control water entry into the machine. Solenoid valves are used in  dentist chairs  to control air and water flow. In the  paintball  industry, solenoid valves are usually referred to simply as â€Å"solenoids. â €  They are commonly used to control a larger valve used to control the propellant (usually compressed air or CO2). In addition to this, these valves are now been used in household water purifiers (RO systems).Besides controlling the flow of air and fluids, solenoids are used in pharmacology experiments, especially for patch-clamp, which can control the application of agonist or antagonist. Many variations are possible on the basic, one-way, one-solenoid valve described above: * one- or two-solenoid valves; * direct current  or  alternating current  powered; * different number of ways and positions; INTRODUCTION TO PLC : A  Programmable Logic Controller, or PLC, is more or less a small computer with a built-in operating system (OS). This OS is highly specialized to handle incoming events in real time, i. . at the time of their occurrence. The PLC has input lines where sensors are connected to notify upon events (e. g. temperature above/below a certain level, liquid level reached, etc. ), and output lines to signal any reaction to the incoming events (e. g. start an engine, open/close a valve, etc. ). The system is user programmable. It uses a language called â€Å"Relay Ladder† or RLL (Relay Ladder Logic). The name of this language implies that the control logic of the earlier days, which was built from relays, is being simulated.The PLC is primarily used to control machinery. A program is written for the PLC which turns on and off outputs based on input conditions and the internal program. In this aspect, a PLC is similar to a computer. However, a PLC is designed to be programmed once, and run repeatedly as needed. In fact, a crafty programmer could use a PLC to control not only simple devices such as a garage door opener, but their whole house, including switching lights on and off at certain times, monitoring a custom built security system, etc.Most commonly, a PLC is found inside of a machine in an industrial environment. A PLC can run an automatic machine for years with little human intervention. They are designed to withstand most harsh environments. When the first electronic machine controls were designed, they used relays to control the machine logic (i. e. press â€Å"Start† to start the machine and press â€Å"Stop† to stop the machine). A basic machine might need a wall covered in relays to control all of its functions. There are a few limitations to this type of control. * Relays fail. * The delay when the relay turns on/off. There is an entire wall of relays to design/wire/troubleshoot. A PLC overcomes these limitations, it is a machine controlled operation. PLCs are becoming more and more intelligent. In recent years PLCs have been integrated into electrical communications  networks  Ã¢â‚¬â€œ i. e. , all the PLCs in an industrial environment have been plugged into a network which is usually hierarchically organized. The PLCs are then supervised by a control center. There exist many propri etary types of networks. One type which is widely known is  SCADA  (Supervisory Control and Data Acquisition).The PLC is a purpose-built machine control computer designed to read digital and analog inputs from various sensors, execute a user defined logic program, and write the resulting digital and analog output values to various output elements like hydraulic and pneumatic actuators, indication lamps, solenoid coils, etc. Scan cycle Exact details vary between manufacturers, but most PLCs follow a ‘scan-cycle' format. Overhead Overhead includes testing I/O module integrity, verifying the user program logic hasn't changed, that the computer itself hasn't locked up (via a watchdog timer), and any necessary communications.Communications may include traffic over the PLC programmer port, remote I/O racks, and other external devices such as HMIs (Human Machine Interfaces). Input scan A ‘snapshot' of the digital and analog values present at the input cards is saved to an i nput memory table. Logic execution The user program is scanned element by element, then rung by rung until the end of the program, and resulting values written to an output memory table. Output scan Values from the resulting output memory table are written to the output modules. Once the output scan is complete the process repeats itself until the PLC is powered down.The time it takes to complete a scan cycle is, appropriately enough, the â€Å"scan cycle time†, and ranges from hundreds of milliseconds (on older PLCs, and/or PLCs with very complex programs) to only a few milliseconds on newer PLCs, and/or PLCs executing short, simple code. ADVANTAGES OF PLC: * PLC’s have flexibility (i. e. ) it is possible to use just one model of PLC to run any one of the 15 machines. * In a PLC program circuit the PLC program can be used from any keyboard sequence in a matter of minute and rewriting is required. PLC has a large number of contacts for each coil in its programming. * I ncreased technology makes it possible to compact move functions into smaller and less expensive packages. * A PLC programmed circuit can be pre-un ad evaluated in the officer or lab. The program can be typed in tested observed and modified if needed. * PLC circuit operation can be seen during operation directly on a CRT screen. * The operation speed for the PLC program is very fast. * PLC is more reliable. * A PLC programmer who works in digital or Boolean control system can easily perform PLC programming. PLC’s program can’t be made unless the PLC properly unlocked and programmed. LADDER LOGIC DIAGRAM : What is a Ladder Diagram? A Ladder Diagram is one of the simplest methods used to program a PLC. It is a graphical programming language evolved from electrical relay circuits. Each program statement is represented with a line, called the rung, that has all relevant inputs to the left and the output to the right. The output device of a rung is energized if electric powe r can conceptually flow from the left side of the rung to the right side.Input devices are assumed to block the flow of power if they are not activated. During the execution of a ladder diagram, the PLC reads the states of all inputs, then determines the states of all outputs starting from the rung at the top side, going down to the last rung, and finally updates the state of the output devices. * Naming Convention During the development of a PLC program, we must use specific names to identify the inputs, outputs, memory flags, timers and counters. PLC manufactures use a variety of approaches in naming the inputs, outputs and other resources.A typical naming convention is to identify inputs with the letter â€Å"I† and outputs with the letter â€Å"O†, followed be a 1-digit number that identifies the slot number and a 2-digit number that identifies the position of the input or output in the slot. For example: I1:00 refers to the first input of slot 1 O2:00 refers to th e first output of slot 2. Some manufactures number the inputs or outputs starting from 00, while others use the number 01 to identify the first input or output. It is also common to use numbers like 400 e. t. c. The state of an output can be also used as an input in a ladder diagram.In such a case the PLC uses the state of the specific output device that is stored in the output image memory. * Relay Logic Instructions (XIC and XIO) Examine if Closed (XIC) —–[ ]—— Use the XIC instruction in your ladder program to determine if a bit is On. When the instruction is executed, if the bit addressed is on (1), then the instruction is evaluated as true. When the instruction is executed, if the bit addressed is off (0), then the instruction is evaluated as false. Examine if Open (XIO) ——-[/]—— Use the XIO instruction in your ladder program to determine if a bit is Off.When the instruction is executed, if the bit addressed is off (0), the n the instruction is evaluated as true. When the instruction is executed, if the bit addressed is on (1), then the instruction is evaluated as false * Relay Logic Instructions: Input Transition Sensing Positive Transition Sense (PTS) The condition of the right link is ON for one ladder rung evaluation when a change from OFF to ON at the specified input is sensed. Negative Transition Sense (NTS) The condition of the right link is ON for one ladder rung evaluation when a change from ON to OFF at the specified input is sensed. * Output Instructions Output Energize (OTE) —-( )—– If the condition of the left link of the OTE is ON then the corresponding bit in the output data memory is set. The device wired to this output is also energized. Negative Output Energize (NOE) ——(/)—– If the condition of the left link of the OTE is OFF then the corresponding bit in the output data memory is set. The device wired output is also energized. Output L atch/Set (OTL) and Output Unlatch/Reset (OTU) If the condition of the left link of the OTL is momentary ON then the corresponding bit in the output data memory is set, and remains set even if the condition switches to the OFF state.The output will remain set until the condition of the left link of the OTU is momentary ON * Basic Logic Functions (OR, AND) Two Input OR Function The output is ON only if the two inputs are OFF. Two Input AND Function The output is ON if both of the two inputs are ON. * Basic Logic Functions (NAND,NOR) Two Input NAND Function The output is ON if any of the two inputs is OFF. Two Input NOR Function The output is ON if both of the two inputs are OFF. * Basic Logic Functions (EXOR, EXNOR) Two Input EXOR Function The output is ON if any of the two inputs is ON, but not both. Two Input EXNOR FunctionThe output is ON if both of the two inputs are either OFF or ON. * Set/Reset Latch Set/Reset Latch using a Hold-in contact Set/Reset Latch using Latch/Unlatch out puts Notes: O1:00’ means that the output is unchanged If both inputs are ON then normally the output is OFF, since the Unlatch rung appears last in the ladder diagram. * Timer Instructions Timer Instructions are output instructions used to time intervals for which their rung conditions are true (TON), or false (TOF). These are software timers. Their resolution and accuracy depends on a tick timer maintained by the microprocessor.Each timer instruction has two values (integers) associated with it: Accumulated Value (ACC): This is the current number of ticks (time-base intervals) that have been counted from the moment that the timer has been energized. Preset Value (PR): This is a predetermined value set by the programmer. When the accumulated value is equal to, or greater than the preset value, a status bit is set. This bit can be used to control an output device. Each timer is associated with two status bits: Timer Enable Bit (EN): This bit is set when the rung condition to t he left of the timer instruction are true.When this bit is set, the accumulated value is incremented on each time-base interval, until it reaches the preset value. Done Bit (DN): This bit is set when the accumulated value is equal to the preset value. It is reset when the rung condition becomes false. * Timer On-Delay (TON) Instruction The TON instruction begins count when its input rung conditions are true. The accumulated value is reset when the input rung conditions become false. Timer ladder diagram example. Typical timing diagram (Assume that Preset = 07). * Timer Off-Delay (TOF) InstructionThe TOF instruction begins count when its input rung makes a true-to-false transition, and continues counting for as long as the input rung remains false. The accumulated value is reset when the input rung conditions become false. Timer ladder diagram example. Typical timing diagram (Assume that Preset = 07). * Retentive Timer (RTO) Instruction The RTO instruction begins count when its input rung conditions are true. The accumulated value is retained when the input rung conditions become false, and continues counting after the input rung conditions become true. * Counter InstructionsCounter Instructions are output instructions used to count false-to-true rung transitions. These transitions are usually caused by events occurring at an input. These counters can be UP (incrementing) or DOWN (decrementing). Each counter instruction has two values (integers) associated with it: Accumulated Value (ACC): This is the current number of the counter. The initial value is zero. Preset Value (PR): This is a predetermined value set by the programmer. When the accumulated value is equal to, or greater than the preset value, a status bit is set. This bit can be used to control an output device.Each counter is associated with two status bits: Counter Enable Bit (EN): This bit is set when a false-to-true rung condition to the left of the counter instruction is detected. Done Bit (DN): T his bit is set when the accumulated value is equal to the preset value. It is reset when the rung condition becomes false. The maximum count value is 9999*. After a maximum count is reached, the counters reset and start counting from zero. * Count-up (CTU) Instruction The CTU instruction increments its accumulated value on each false-to-true transition at its input, starting from 0. Counter ladder diagram example.Typical timing diagram (Assume that Preset = 10). * Count-down (CTD) Instruction The CTD instruction decrements its accumulated value on each false-to-true transition at its input, starting from 0. Counter ladder diagram example. Typical timing diagram (Assume that Preset = -10). * The Reset (RES) Instruction The RES instruction resets timing and counting instructions. When the RES instruction is enabled it resets the following. Counters:Accumulated value, Counter Done Bit , Counter Enabled Bit. Timers: Accumulated value, Timer Done Bit, Timer Timing Bit, Timer Enable Bit.R eset ladder diagram example. ADVANTAGES ; APPLICATION: * Automatic control of machine. * Free from manual operation and frequent checking. * Machine fault is reduced. * Energy consumption is reduced. * This method can save more power. * Industrial application mainly used for boiler production. * Drilling and boring applications. * This applications can be implemented for all machines in BHEL. BOW CORRECTION MACHINE : These are the specifications of the bow correction machine currently in use. MACHINE| BOW CORRECTION MACHINE| CAPACITY| 600 TONS| CYLINDER BORE| 550 MM| RAM DIAMETER| 520 MM|DAYLIGHT| 3000 MM| THROAT| 1700 MM| STROKE| 500 MM| CONNECTED LOAD| 60+1+5 HP| TOTAL WEIGHT| 80 TONS| BOLSTER SIZE| 1500*2000*200 MM| SPEEDS OF OPERATION| 15mm/sec – APPROACH6mm/sec – PRESSING60mm/sec – RETURN | PURPOSE. In the pipes used in boilers, small pipes are attached using welding. This welding makes the pipe to bent. Thus its surface becomes uneven and makes it imperfec t to be used in boilers. In this case this machine is used. Using this machine the bents and bows can be straightened and makes the pipes perfect to be used in the boilers. CIRCUIT DIAGRAM : OPERATION.The hydraulic circuit is designed to achieve fast approach speed, slow pressing speed and fast return speeds by use of a single pump. The fast approach speed is achieved by ensuring that the cylinder ram moves down through its self weight or what is termed as gravity fall. To achieve gravity fall of the cylinder of the cylinder it is important to ensure that at all times the pressure in return line is minimum 5 kg/ cm2. On starting the motor the pump delivery is directed to the tank through unloading type relief valve no. 4. The same flow is directed to the Z1 lines of catridge valves 5 ; 7, which ensures that the valves are closed.On operation of solenoid S1 of main relief valve the pump flow is directed to the catridge valves, however due to differential areas the catridges are still closed and pump reaches system pressure and unloads to tank through relief valve 4. On operation of solenoid S2( valve 6) along with S1, Port A of solenoid valve no. 6 is connected to tank Y1 which facilitates opening of catridge valve 5 and hence the oil flows into the forward line of the cylinder resulting in downward movement. At the same time the oil in the return line of the cylinder is connected to tank at the set pressure through valve no. 11.Hence the cylinder moves down with slow pressing speed. On operation of solenoid S4 ( valve 8) along with S1 ; S2 the X port of catridge valve 10 is connected to tank through valve 8, 6 and port Y1 that ensures the opening of the catridge valve 10. Opening of the catridge valve ensures that the return line is connected directly to tank and hence the cylinder oves down with its self weight and fast approach speed is achieved. At the same time prefill valve 14 opens to fill the cylinder forward area with oil. To set the maximum fast appro ach speed valve 10 is provided with a stroke adjustment setting.On operation of solenoid S3(valve 6) along with S1, port B of solenoid valve no. 6 is connected to tank Y1 which facilitates opening of catridge valve 7 and hence oil flows into the return line of the cylinder. At the same time since A port of solenoid valve no. 6 is connected to pump port X4 is also connected to pump, ensures the opening of prefill valve no 14 and that the forward line of the cylinder is connected back to tank. This results in reverse movement of the cylinder. Pressure relief valve 9 is provided to ensure smooth deceleration of the cylinder from fast approach to pressing.The valve ensures that the pressure in X port of the cartridge valve does not exceed set pressure therby ensuring that the valve closes slowly reducing jerks. The hot oil from the machine is then sent to the chiller unit to reduce its temperature. CHILLER UNIT: In the chiller unit, the refrigerant is used to cool down the hot oil from the machine. REFRIGERATION: A liquid whose Saturation temperature at normal atmospheric pressure is below the temperature that is to be produced by refrigeration is chosen as the working liquid in the refrigerant.Such a liquid will evaporate at lower temperatures and will absorb hear as it does so. This heat is extracted from the surroundings. The vapour formed in this way is compressed in a compressor. After compression the refrigerant may be in the vapour state or, in the liquid state if its temperature after compression is not greater than the saturation temperature at that increase pressure. The low temperature vapour is condensed in a condenser, in doing so it lowers its temperature below the surroundings . Now the condensed liquid is expanded to a lower pressure and the cycle of refrigeration is repeated.REFRIGERATION CYCLE: * Compressors are used in vapour compression cycles. It is the heart of the system and it sucks low-pressure refrigerant vapour from the evaporator and co mpresses it to a pressure corresponding to the saturation temperature that will be higher than continuously re-circulate the refrigerant through the system. * Air-cooled condensers are heat exchangers,which reject heat from the condensing refrigerant to the atmosphere. * The function of condenser in a refrigerated system is to de-superheat and condense the compressed discharge refrigerant vapour.High-speed fans are mostly used to speed up the process. * At the exit of the condenser the refrigerant loses temperature but still is in high-pressure state. The temperature falls down a little high to the ambient. * Dryers are mainly used to capture the moisture content if any mixed with the refrigerant. When the refrigerant passes through its thin filter mesh the moisture gets trapped on the silica gel and clean refrigerant flows through. * Throttle valve(also called as Expansion valve)is also a very important component of the vapour compression refrigeration system.The function of an exp ansion device is to expand the liquid refrigerant from the condensing pressure to the evaporating pressure. Also it throttles the required flow into the evaporator depending on the load conditions. Commonly used expansion devices are capillary tubes, thermostatic expansion valves and constant pressure expansion valves. * Any liquid when evaporate creates a cooling effect. Same applies here, when the refrigerant exists expansion valve it is partly in vapour state at low temperature and pressure. It flows through the evaporator and exchanges heat with the surroundings. After existing the evaporator it has gained heat from the surrounding media, thus lowering the temperature in the freezing compartment. This superhead vapour passes further and is drawn by the compressor, which compresses it,and delivers to condenser, thus, completing the refrigeration cycle. The ladder diagram used in this machine is : CNT_ON CNT_OFF MEM_1 MEM_1 MEM_1 MOT_ON MOT_ON MOT_OFF VAL4_ONVAL4_ON VAL4_ON MEM _2 MEM_2 S1 S2 S3 S4 S5 FAST_APP FAST_APP S1 S2 S3 S4 S5 PRESS_ON TIMER T1 PRESET 15 ACC 0 PRESS_ON S1 S2 S3 S4 S5 HOLD_ON HOLD_ON HOLD_MEM HOLD_MEM S1 S2 S3 S4 S5 RET_ONRET_ON VAL4_ON COMPARE TEMP_ON;45 TEMP_ON MEM_4 MEM_4 CHILLER_ON TEMP_ON CHILLER_OFF COMPARE TEMP_ON;45 LOW_SEN ALARM_ON V_LOW_SEN TANK_ONPRES_ON VAL14_ON EXISTING SYSTEM : * There is no temperature detection system. Hence, the chiller unit has to function continuously irrespective of hydraulic oil’s temperature. * Possibilities of machine can run due to friction since there is no Indication of oil in tank. * The chiller unit is running continuously hence there is a possibilities of lot of Energy consumption losses. * There is no automatic control for the whole machine. * There is no automatic function for declamping and lubrication. There is no oil level sensor in the hydraulic tank to sense the oil level in the tank. * Relays are used which is not automatic and inefficient. HORIZONTAL BORING MACHINE HY DRAULIC TANK CHILLER UNIT PUMP SOLENOID VALVE PROPOSED SYSTEM: * In this method there is a temperature sensor which is used to sense the temperature of the oil in the hydraulic tank. * The chiller unit will be turned on only when the oil temperature gets increased with the specified value of oil temperature * Friction of the machine can be reduced by implementing the lubrication function. Oil level in the hydraulic tank can be detected by using an oil level sensor . * Two types of oil level sensor is used. I. Low level sensor II. Very low level sensor So that we can avoid the machine running in dangerous condition. * All the operation in one axis (x or y or z) can be operated by a single push button switch. * Declamping and lubrication function takes place automatically. ENERGY SAVING CALCULATION: * WITH CHILLER UNIT WORKING CONTINUOUSLY: For continuous running of chiller unit the motor consumes 18KW. Per day: morning -4hrs night -8hrs so chiller unit runs totally 12hrs a day. 8KW*1 2hrs=216 KWhr The chiller unit consumes 216KWhr per day. For electricity: 1unit= Rs. 5 Therefore 216*5= 1080 So for 216 unit it costs Rs. 1080 per day. 1080*30=Rs. 32,400 For 1month it costs Rs. 32,400 32400*303= Rs. 98,17,200 For 1year it costs Rs. 98,17,200. * WITH PLC: For automatic on/off of chiller unit the motor consumes 10KW. Per day: morning -4hrs night -8hrs so chiller unit runs totally 12hrs a day. 10KW*12hrs=120KWhr The chiller unit consumes 120KWhr per day. For electricity: 1unit= Rs. 5 Therefore 120*5= 600 So for 120unit it costs Rs. 600 per day. 600*30=Rs. 8,000 For 1month it costs Rs. 18,000 18000*303= Rs. 54,54,000 For 1year it costs Rs. 54,54,000. CONCLUSION : This project mainly focuses the oil temperature and oil level detection and also the automatic control of machine. Implementation of this project is simple and very economical. This applications can be implemented for all machines in BHEL. All the functions can be achieved through a single PLC program. The adv antage of our project is used to eliminate manual checking and operation. The above mentioned parameters and operation can be sensed and operated through PLC.This project saves more power to industries by reducing the power consumption. REFERENCES : 1. â€Å"Allen bradely Instruction Set user manual† by Rockwell Automation. 2. Programmable Logic Controllers: Programming Methods and Applications by John R. Hackworth and Frederick D. Hackworth, Jr 3. â€Å"Ladder logic fundamentals† industrial control system fall 2006. 4. DOE FUNDAMENTALS HANDBOOK â€Å"INSTRUMENTATION AND CONTROL Volume 2 of 2†- U. S. Department of Energy Washington, D. C. 20585. 5. â€Å"Automating Manufacturing Systems with PLCs† (Version 5. 0, May 4, 2007) -Hugh Jack