Reflection and Reaction Paper Of Human Evolution Essay

INTRODUCTION Planet Of Life: Apes to Man narrated by Stacy Steach, tells us about the origin Of Human Evolution. According to the documentary film, 100, 000, 000 years Ago, the world was first inhabited by the dinosaurs. But, because of the asteroid 6 miles wide That struck the earth; it brought the end of the reign of the Dinosaurs. After being strucked by The Asteroid, the earth became life less. But, insects and plants and some small Mammals would Survive and populate the landscape. And, one of these is the Pregatoria, One of earth’s First Primate. It was an arboreal animal. The Earth regained its life source and bass tropical rainforest For hundreds of generation. This Large Habitat would nurture new families of primates. One of the oldest known signs of our origin and arrival are hominid imprints dating back 3 Million and a Half years ago. Human evolved from primates perhaps the apes that once lived in Southern Africa. This sumptuous forest may have helped to shape human kinds direct ancestors. In Lake Victoria in Kenya, Rusinga Island, The team led by Mary Leakey discovered the partial Skeleton Up a distant relative dating 60 Million Years Ago. Over decades Rusinga became Remarkable evidence of Human origins. There, found a Proconsul, these are earliest known ape. No other fossil ancestor has been reconstructed in such details. With their long fingers they Could grasp the branches firmly. They’ve been said to be related to humans, despite years of Analysis and ongoing scientific inquiry, it is not yet found possible to name all the limbs to Human Family Tree.

Human Resources Management Essay

Activity 1: Understand the knowledge, skills and behaviours required to be an effective HR practitioner 1.1 Explain the knowledge, skills and behaviours required to be effective in an identified HR role The CIPD created an HR Profession Map which provides a framework for self-assessment activity which forms the basis of Continuous Professional Development. The map is suitable for anyone operating anywhere in the world and it has been designed to support HR professionals at every stage of their career. It is a view on how the HR department functions and adds value to any organisation in all sectors no matter the shape or size. Through its simple and flexible structure the HRPM covers ten professional areas and eight behaviours and it is set out in four bands of competence. The HRPM was elaborated starting from two key professional areas: ‘Strategy, Insights & Solutions’ and ’Leading and managing the function.’ ‘Strategy, Insights & Solutions’ is at the core of HRPM because it grows actionable insights and solutions, prioritised against deep business awareness. The ‘Leading and managing the function’ professional area provides activ e, insight-led leadership. The eight professional behaviours that HR practitioners need in order to be effective and make a contribution to the success of the organisation are: decisive thinker, skilled influencer, personally credible, collaborative, driven to deliver, courage to challenge and being a role model. There are different mixtures of behaviours that link to each professional area, but there are no requirements as to what behaviours are required for a certain role; however the four bands of professional competence will position the different levels of performance. The staff at Band 1 level are involved in support with administration providing first line advice, effectively managing information. Mainly customer support focused, they follow agreed methodology and processes and are usually flexible to change when new ideas are agreed. They have knowledge about how to deliver high quality service, handle and resolve complaints and approach difficult customers. At this level of competence staff actively develops understanding of the HR profession both within, and beyond the organisation and work positive with other areas of HR to deliver objectives. They search for advice from team leaders and colleagues in order to achieve objectives  and supply the organisation with ideas, observations and suggestions for improvements when they become apparent. Staff at Band 1 plan and execute personal and professional development and are aware of the organisation structure, culture, values, operations and goals, its range of products and services and its customer base. The technical knowledge required for the role is met in professionals at this level of competence. They perceive the significance of how the component parts of HR combine together to create an overall service for the business objectives. They comprehend how to work with others in HR to prioritise tasks and manage time to reach objectives. Professionals at this level of competence are confident in: asking questions and seeking clarification, pursuing and reflecting feedback on personal performance and using it to modify practice and plan development (curiosity) using previous experience, standards, procedures and common sense to make decisions (decisive thinking) identifying the key points to communicate, selecting the right means for the message and audience (skilled influencer) demonstrating a consistently strong disposition for action and a desire to succeed (driven to deliver) making a positive contribution to the team, supporting and coaching colleagues through their day-to-day work( collaborative) taking satisfaction in being considered trustworthy and reliable by stakeholders and colleagues (personally credible) advocates personal, departmental and company values, processes and behaviour(positive role model) building relationships with colleagues in HR and with customers The staff at Band 2 level has a clear understanding of the evaluation process and has the ability to resolve satisfactory problems, where Band 3 acts as consultants, leading the professional area. They spend their time in understanding the functional and business realities providing solutions. At Band 4 level are leading the function or professional area and are development and performance coaches for the hard issues. They develop the organisation and human resources strategies. Activity 2: Know how to deliver timely and effective HR services to meet users’ needs 2.1 Identify the needs of those using HR services within an organisation and explain how conflicting needs are identified and prioritised In order to deliver excellent customer service there are needed a mixture of both knowledge and skills. There is need of knowledge of the products and services supplied to the external customers for those services and products, the systems and procedures within the organisation and the network of internal customers. The HR department is a service department to a range of customers. These can be external customers such as legal or government agencies, or within an organisation, the internal customers are Employees (current and potential), Line Managers, Senior Managers and Directors. Employees need professional HR support from real people partners and HR must be responsive and clear about what services it offers. HR has to be easy to contact and able to respond quickly and effectively, able to motivate its customers in order to increase their efficiency (bonuses and promotions), because the success of any organization depends on the employees potential. Employees are the main asset of any organisation. They require accurate and on time pay and benefits, to be provided the motivation to work and given the opportunity for training and development. Managers want an HR function which understands the workforce and can help manage the balance between employee and business needs. They need a proactive HR function which identifies issues before they happen and works with managers to address them. They would like HR to help them with their most challenging personnel issues including motivation, change and skills development. Line managers need to be supported by strong organisational values and they also need to feel confident that their own managers will treat them with respect. They need to be encouraged to reflect on their own behaviour and how they are perceived by those they manage and they need to understand their impact on motivation consequently on performance. The needs of employees and managers may sometimes be conflicting. For example, managers require tasks t o be completed as quickly as possible with very good results whereas employees want more time in order to complete certain tasks. An effective HR department must use knowledge, diplomacy and confidence in dealing with both groups to find the right balance. A way of resolving these conflicts is to focus on the overall needs of the organisation by ensuring that employees with the right skill sets are recruited. The skills and abilities of the employee must be aligned to their job role and HR has to honour development  and training to ensure productivity is reached and recognise people effectively with own selected ways of recognition. Despite the best efforts of HR departments there are some times when customers’ needs cannot be met. In this case fair reasons must be provided in a professional and sensitive way. 2.2 Identify different methods of communication and explain the advantages and disadvantages of each Communication plays a very important role in the development of an organisation. Every task in any role in a Human Resources department calls for good communication and is the simplest way to transfer information from one place to another. When a new employee is hired, good communication skills help pick the right person and make sure the person hired knows what the job involves. When training, coaching, or evaluating an employee superior communication will clarify the expectations from that person. When conflicts arise high standard communication skills resolve the issues without creating more. Good communication can help to: improve relationships and teamwork, boost performance and productivity solve problems effectively, create an environment conducive to openness for others. Oral communication is one of the most effective means of communication. Oral communication is very easy and simple. Also it avoids time wasting. Spoken or Verbal Communication is required in situations like: face-to-face meetings, telephone, team briefings, conferences and seminars. Advantages of verbal communication are: the opportunity for instant feedback to make sure the message was understood and the opportunity of making decisions without any delays the occasion to utilize nonverbal clues (tone, body language, inflection) the permission to make specific points in detail and elaborate on any that are unclear points are broken down and clearly understood the offer to the recipients of undivided attention making them feel more important is very useful when it comes to the transmission of very private and confidential information relatively cheaper means of communication it can be achieved without the need of travelling to communicate with people outside the organization is particularly good when one wants to persuade or motivate people into doing something. simplicity in identifying mistakes and correction of the ones already said However, there are several disadvantages and the main one is miscommunication. In other words, whatever the listener hears is often not what is meant. The simplest words, for example, have a different connotation for different people. The most important disadvantages of Verbal Communication are: there is no formal record of transaction which could later cause problems if the verbal message is passed on along the hierarchy, then some distortions can occur during the process. lengthy and distant communications cannot be effectively conveyed verbally receiver may be in receipt of the message in his own perception and thus misunderstand the intent of the message. spontaneous responses may not be carefully thought about. things like background noise could interfere during the transmission of information and render the information ineffective Using non-verbal communication (e.g. body language, gestures, eye contact and posture) is another efficient method of communication. Body language can transfer attitudes toward a speaker even before a word is said and can be used to show the speaker engagement in the conversation. Non-verbal communications include facial expressions, the tone and pitch of the voice, gestures which can give clues and additional information and meaning over and above spoken (verbal) communication. The advantages of non-verbal communication are: possibility to speak with a person who cannot hear it gives the chance to communicate in places where talking audibly is avoided ability to communicate from small distance without needing to raise the voice The disadvantages of non-verbal communication are: impossibility to carry out long conversations the variety from culture to culture particularities of messages cannot be discussed in detail that it is not a useful tool for public communication that it is less influential than verbal communication Written Communication includes: letters, e-mails, books, magazines, the Internet or via other media. Writing skills are an important part of communication. Good writing skills allow the possibility to communicate messages with clarity and ease to a far larger audience than through face-to-face or telephone conversations. The advantages of written communication are as follows: strengthens and clarifies a verbal message allows records to be kept for future reference more reliable than oral communication more precise than any other means of communication can be stored for future analysis can be easily distributed to recipients that are in different locations. Disadvantages associated with the written communication are that can take a considerable amount of time to produce inflexibility feedback is not immediate slows down the decision making process can be very expensive to produce and to disseminate 2.3 Describe how to build and maintain effective service delivery The HR professional ensures that the delivery of HR service and information to leaders, managers and staff within the organisation is accurate, efficient, timely and cost effective. Feedback and complaints are important as they give HR assistants the opportunity to improve themselves, their processes and services. When dealing with complaints in order to obtain a positive result the problem must be clarified and solution options must be identified. By solving customers problems, or fulfilling their needs loyalty and competitive advantage is being built. Activity 3: Be able to reflect on own practice and development needs and maintain a plan for personal development 3.1 Explain the concept and importance of CPD Continuous Professional Development (CPD) is a combination of approaches, ideas and techniques that will help me to manage my own learning and growth. The CIPD CPD principles are as follows: development is continuous in the sense that members actively seek to improve their skills, knowledge and performance members show an active interest in the internal and external environment and in the continuous development and improvement of self and others at both organisation and individual levels development is owned and managed by the individual, learning from all experiences, combined with reflection as a key activity 3.2 Undertake a self-assessment of capabilities as an HR or L&D practitioner and identify development needs Studying CPD is important as it gives me a number of benefits and helps me to build my own confidence and credibility with employers CPD enables me to: take steps to achieve my goals by focussing on my training and development be more productive and efficient highlight my skills and achievements within a framework that is recognised by employers. 3.3 Evaluate options to meet identified development needs Advantages of distance learning are: does not require commuting can study from anywhere while pursuing the education of my choice gain extra knowledge self-paced learning Disadvantages of distance learning are: costly and complex technology requires advance planning and time management to get make sure assignments are done on time the hidden costs does not offer immediate feedback distance learning degrees may not be acknowledged by all employers distance learning does not give the opportunity to work on oral communication skills do not get the practice of verbal interaction with professors and other students social isolation Overall saves you money and time as you can schedule learning around other aspects of your personal and professional life. You do not have to live in the same city or the same country to attend the learning institution of your choice. You can study wherever you have access to a computer and Internet connection. You can transfer the computer and Internet skills that you will gain in the process of your distance learning experience to other facets of your life. However social isolation is lessened with advances and use of communication technologies such as bulletin boards, threaded discussions, social networking, chats, email and video conferencing.

Ten principles outlined Assignment Example | Topics and Well Written Essays - 750 words

Ten principles outlined - Assignment Example The author defines how meditation encourages a healthy lifestyle and increases awareness among individuals. Indeed, through meditation, individuals can recognize and manage their anger with a clear mind, which calms them down (Crane, 2014). Moreover, the article asserts that meditation increases happiness where various studies have established that meditation increases brain signaling in the left side of the prefrontal cortex that derives positive emotions that increases happiness (Crane, 2014). The author quotes other scholars who confirm that meditation increases acceptance and improves overall well-being. Uniquely, studies establish that meditation also slows aging by changing brain physiology. Moreover, the huge gray matter possessed by meditators slows aging. Ultimately, the article confirms that meditation benefits cardiovascular and immune health by inducing relaxation that increases the nitric oxide chemical, which compels blood vessels to open thus reducing blood pressure (Crane, 2014). Apparently, the article is relevant and reliable to discuss the benefits of meditation. I have therefore found the article to be beneficial since it discusses various benefits of meditation. The article quotes relevant studies and scholars that explain the merits of meditation. Indeed, the article supports all its claims relating to the benefits of meditation. Notably, the article is beneficial since it depicts how meditation can improve our health, well-being, and social lives. The happiness, self-awareness, acceptance, good health, and increased concentration that the article presents are fundamental in human life (Crane, 2014). Moreover, the article is current, relevant, and credible to discuss the research topic, benefits of meditation. The article is equally easy to read and access since it is on an international news media. The paper lists, explains, and summarizes the importance of the ten

Front Line Innovations, Inc Essay Example | Topics and Well Written Essays - 4250 words

Front Line Innovations, Inc - Essay Example Front Line Innovations, Inc. (FLII) provides professional management and alternative and cost effective marketing concepts, programs, and systems requirements that address concerns on customer retention, operational solutions, increased sales productivity, and increase quality of services. Incorporated in 1999, FLII combines the managerial expertise and resources of its proprietors to produce a marketing and management company and an IT company as well that would set the trend in management consultancy and alternative marketing in the industry. Investments in additional capital expenditures and manpower are put up by the shareholders as required on a per project basis. Resource tie-ups such as that with Goldplus, Converge Systems Inc., and Smart Card Solutions Inc. provide the base requirements for one of FLII's major applications involving card-based programs such as co-branded credit cards and loyalty programs. Likewise, this allows FLII to structure marketing incentive programs 'tailor-fit' for its clients. The office software set-up as well the customized software systems required for clients have been developed by FLII's technical group. FLII's current manpower complement is composed of 30 sales and marketing, processing, encoding and admininstration personnel. Industry Background Smart Cards Though a relatively new technology, smart cards have become an increasingly popular solution around the globe. A smart card is a tiny integrated-circuit chip embedded in a credit card-sized piece of plastic. The chip is what makes the card "smart" as it allows a lot more information to be stored and carried in the card compared to the standard magnetic-stripe card (Verifone, 1996). Smart cards have been used to solve a variety of problems ranging from serving as a platform for frequent-shopper electronic loyalty programs, to providing a highly secure and convenient automated currency option, to enabling cost-effective healthcare and entitlement programs. Electronic Loyalty Programs With the intense competition that characterizes retailing worldwide, forward-looking retailers have been turning to card-based electronic loyalty programs to attract new customers and retain their current customer base. Smart cards have the opportunity to play a major role in electronic loyalty programs. Electronic loyalty programs use a retailer's POS system to track purchases made with credit, debit, smart cards or a retailer's proprietary card. Consumers can be rewarded for their continued patronage with discounts, free items, bonus points or other incentives. Experience has shown that such programs encourage repeat business and boost sales for the merchant (Verifone, 1996). The primary business of FLII is developing a loyalty program system integrator to enable the smart card to work with a retailer's POS or any other tracking system. With the system, they are able to capture customer information from pre to post sales operations. Thus, FLII's core value lies on its ability to develop this type of proprietary software which is tailored to the

Hamlet Essay Example | Topics and Well Written Essays - 500 words - 2

Hamlet - Essay Example It seemed to me that he was different from Oedipus or Macbeth in that he did not jump into thoughtless action. I searched for the possible reasons for this and interrogated the differences in the notion of tragedy among these heroes. Apparently, Hamlet was different from the others because he was faced with serious domestic problems soon after he returned home from the University. The learned Prince took the world seriously and tried to comprehend it to the fullest, and to his utter dismay discovered that time was out of joint. I focused on the specific pattern in which Hamlet tried to discover the truth and the ways in which he tried to avoid action. I searched for the possible reasons for his ambivalent relationship with his mother Gertrude and lady love Ophelia, and a specific pattern evolved with which I could argue that Hamlet’s inaction did not show his inability, and that it was part a well thought out plan of action which the Prince had conceived. The paper revolves around the idea that Hamlet’s inaction was related to the careful study of the situation at hand which he had to resolve. It is argued that instead of jumping into thoughtless action like Oedipus or Macbeth, Hamlet took as much time as possible to interrogate the existential questions he was faced with and realized that the state of the world did not adhere to any idealistic notion. Hamlet’s quest for truth is not something that would lead to a happy state of affairs. He realizes that he is doomed to be a tragic hero whose actions can only result in irrevocable sorrow. The paper introduces the psychoanalytic readings that have established the possible reasons for the procrastination of Prince Hamlet and goes on to analyze the Apollonian and Dionysian traditions in the Greek culture. In this section, Hamlet is seen as possessing more of the Apollonian elements in contrast with Oedipus, who

Diversity training manual part 2 Essay Example | Topics and Well Written Essays - 500 words

Diversity training manual part 2 - Essay Example As such, HR managers should be ready to handle and manage a diverse workforce composed of persons from different cultural, as well as racial backgrounds. There is bound to be tensions and conflicts arising from their differences when people from different races and cultural backgrounds converge at one place for a common goal, such as at a workplace. For instance, the racial differences may lead to creation of classes and social status among the workers, even for those in the same level in the organizational structure. The whites tend to look down upon other races, especially the Africans, as inferior. As such, some of these whites will blatantly discriminate against the blacks, as well as those from different races unlike theirs, for feeling superior and more deserving of better job opportunities than the rest. Such cases are particularly rampant in companies incorporated and owned by the whites who are acute racists. These whites carry on modern day slavery by overworking the blacks, and workers from other races who are their juniors or of an inferior race (Jackson, 1992). Discrimination or victimization of any kind against racial, as well as cultural backgrounds is wrong. As such, this should not occur in any organization. This creates tensions and a poor working environment that hampers productivity and efficiency within the organization. Instead of the workers doing their work diligently, cooperating with one another, and coordinating organization activities in order to meet the specific objectives of the organization, they spent most of their time fighting amongst one another. This leads to a grave wastage of important person-hours for the company in which it would be undertaking production activities. Furthermore, if the management of the organization do not active measures to bring this situation under control, then the company risks falling into

Engineering Managment Coursework Example | Topics and Well Written Essays - 1500 words

Engineering Managment - Coursework Example The company was founded by John Cadbury in the year 1824. It is presently headquartered at Uxbridge, London, United Kingdom and operates in more than 50 countries of the world (Prinz, 2012). Since the time of its inception, the company has been growing at a rapid pace and the reason behind its continued success is its clear strategies, plans, goals and objectives. The company has been operating in the market for almost 200 years. Despite economic crises that have affected the world from time to time, the company is still standing strong in the market. Moreover, the company has always also remained focused on its mission, objectives and strategies. However, the company has faced some kind of issues in the form of PR crisis and financial crisis. To deal with this, it is highly recommended that the company should reduce its operating cost and appoint a dedicated public relations officer to oversee any public relations issue. Question 1 1.1 Cadbury’s current mission, objectives, a nd strategies Mission The core purpose of the company is to work together and create a brand which people love. The core mission of the company is to reach the world and become a leading company in the confectionary industry. Cadbury wants to be a part of people's lives through their products. In addition, the company’s mission is to eradicate poverty in the areas of its operation and create a work environment which promotes work force diversity. Objectives The objectives of a company generally depend upon the business situations. Similarly, the business objectives of Cadbury have changed over the years according to the market situations. Cadbury has always relied on short term goals, rather than the long term objectives. However, their short term goals have changed on an average of 10 years. The objectives of the company are as follows: - To open a Cadbury shop and increase its profitability. To use new technology to increase the production. The company has been able to fulf il most of its objectives till now and the current objective of the company is to maintain the level it has already reached. To provide high return to the shareholders. To achieve revenue and sales growth. Strategies The strategy of the company to achieve its goals is very much straight forward. The business strategy of the company is to tap new markets for its products and increase its profitability. Nevertheless, since most of the products of the company are sold all over the world, it has formulated a two-pronged growth strategy, which is dependent upon the cash flow of the company. In addition, the company is also looking forward to new channels of product distribution in order to increase sales. Since, 70 % of the total sales of the company come from impulse purchase that is why the company is also targeting restaurants, pubs and petrol stations to sell their products. Apart from the mission statements, strategies and objective the organizational culture of

Scriptural Hermeneutics, Ricoeur's thoughts, and theological method of Essay

Scriptural Hermeneutics, Ricoeur's thoughts, and theological method of Lonergan - Essay Example Ricoeur felt interpreting texts, events, and symbols that showed the human condition was a necessity in order to obtain understanding. He argued that a final explanation, while it is able to complement understanding, â€Å"does not answer the task of understanding† (â€Å"Rocoeur†). By exploring this belief as well as other modern philosophies, Ricoeur made significant contributions and influenced scholarship not just in hermeneutics, but nearly all the human sciences. St. Thomas Aquinas’ theological philosophy was that knowledge is revealed to humans by God and is conditioned by humans in addition to being imparted by God. He believed both reason and faith were means to attaining divine truth. The principles he integrated into his philosophy were based on the philosophies of Aristotle and Plato. Aquinas’ views led to the philosophical school of thought called Thomism (â€Å"Thomas†). Like Aquinas, Bernard Lonergan believed in the philosophy of Thom ism. He strongly advocated that judgment was not subjective but objective. He also believed that reason as well as the proper practice of theology could lead to divine truth and a better life. Also, like Aquinas, Lonergan viewed theology as a science and desired to integrate theology and philosophy (Tracy, 299).

Research on Ecological Education Paper Example | Topics and Well Written Essays - 500 words

On Ecological Education - Research Paper Example This enhances their self-confidence, providing them with positive outlook towards ecology, its protection and improvement (ALPHA, 2000). Ecological education enables individuals to comprehend a wider and composite conservation system, it also signify to stay in harmony. Thus, ecological education creates an wakefulness not only amongst the educated population but also amongst the uneducated population. It assembles those individuals who are well informed and provide support with keenness and dedication. Communication is the chief motive of ecological association. Communication is done by using short and meaningful sentences. It is imperative that appropriate information and desired awareness must be generated through this means of education. It is evident that environment or ecology is a wide term that involves people, their immediate environment, their cultural environment and also the global impact. It is a concern towards our biological as well as non-biological environment, it al so involves a concern about the social environment. It involves protection of the resources.

The Bean Eaters Essay Example for Free

The Bean Eaters Essay Gwendolyn Brook’s poem, â€Å"The Bean Eaters† as depicted in eleven lines, is symbolic to a more mature couple that has endured a journey filled with togetherness, obstacles, and peace. Although, its setting is surrounded with restraints, limitations, and isolation, they have lived their better days and have what’s left of their future together. The image portrayed by the author presents a quiet, sensitive, grim yet humble atmosphere. The author emphasize that the couple is of maturity, â€Å"Two who have lived their days† (6). They live in a small rental with only each others company. It is obvious that they have lived the best of their days working closely together and surviving on a strict budget, â€Å"They eat beans mostly, this old yellow pair† (line 1). The setting portrayed by the author presents restraints, and limitations, â€Å"Plain chipware on a plain and creaking wood† (3), Tin flatware† (4). In this setting, it appears that the couple is conservative and lives with the same routine in their tight rented space. In this poem, there is no other family or friends, â€Å"this old yellow pair† (1), Two who are Mostly Good† (5), â€Å"Two who have lived their days† (6). This is evidence that they were loners. The key word that continued to arise is giving distinction of just a pair. â€Å"Remembering, with twinkling and twinges† (10), they have endures their past together and are holding on for their final destination. In conclusion, Gwendolyn Brook’s poem, â€Å"The Bean Eaters†, is built on the lives of a couple who have lived and laughed throughout their journey together.

New Technologies for Gas Turbine Blades

New Technologies for Gas Turbine Blades After second world war, gas turbine became an important technology for its application in aerospace and industrial sectors. At the origin materials used for engine construction are greater incisively. When compared to materials used in compressor and gas turbine- blades. But could not endure more than few hours at then relatively modest temperatures and low power settings; then again reliability and thermodynamics efficiency were comparatively low,so it bringing out some accidents stimulating damage to parts and harms to the people In this report, new technologies for increasing the functioning, reliability and emission in gas turbine blades referable improvements materials, are discussed and executed. Introduction: The gas turbine engine is a machine bearing mechanical energy using gaseous fluent. Its an internal combustion engine as though the reciprocating petrol and disel engines with the major deviation that the working fluent through the gas turbine ceaselessly and not intermittent.the uninterrupted flow of the working fluid needs the compression, heat intake, and expansion to take place in distinguish parts. Since that cause a gas turbine consists of various parts work unitedly and contemporized ready to accomplish production of mechanical energy in caution of industrial purpose, or force, when those machines are used for aerospace purposes.[4],[5] C:UsersSenthilDesktopCapture.PNG Components location of typical gas turbine Throughout gas turbine procedure, air is carried from the atmosphere and is absorbed by the first row of compressor blades. From time to time the working liquid receives mechanical energy from the compressor getting that pressure and temperature increase rapidly. In this special moment ,air accepts proper condition to be send combustion chamber; parts responsible for mixing the incoming air with fuel, producing combustion and high temperature -flue-gases with temperature adequate to 1400 °-1500 °C.the accomplishment of that high window temperature intends that material and design of those components requires special branch; ascribable the area settled between combustion chamber exit and the turbine s intake is considered as the most reasonable and ambitious desire for gas turbine technology.[4],[5] Temperature and pressure profile in gas turbine While flue gases have down from the combustion chamber , they driven to the turbine rows; parts responsible for distilling power from gases in form of mechanical-rotational energy, which drive the compressor and developing extra energy to drive system or generating force. Afterwards, flue gases are freed to the atmosphere through the existing nozzle and its having a temperature about 550 °C.[5] Operating conditions for turbine blades: In gas turbine manufacture, the blade of the high pressure turbine has recede the highest care of the research workers since the challenge it provides. The power to run at growingly high gas temperatures has resulted from a combining of material improvements and the growth of more advanced arrangements for inner and outer cooling system; for example at present high pressure turbine blades experience compressed air bled from the compressor and its came in to the turbine blades although little holes drilled on them, with the aim to establish a covering layer on the border of the blades and assured that hot flue gases fired directly.[4] High pressure turbine blades with internal cooling Material used in gas turbine blades: Advanced gas turbine have the most modern and convoluted technology in all faces; construction materials are not the exclusion referable their extreme operating conditions. Because it has been noted before, the most hard and challenging point is the one settled at the turbine inlet, because, there are various difficulties related to it; like utmost temperature (1400 °C-1500 °C),high pressure, high rotational speed, vibration, small circulation area, and so forth. The aforesaid hasten features produces effects on the blades that are demonstrated on the table.[2] Table shows asperity of the several surface-related problems for gas turbine application Ready to overcome those barriers, gas turbine blades are made using advanced materials and modern alloys (super alloys) that contains adequate to ten significant alloying elements, only its microstructure is very simple; comprised of rectangular blocks of stone piled in a regular align with narrow circles of cement to hold them together. the material (cement) has been changed since in the past,intermetallic form of titanium employed in it, but now days titanium was replaced by tantalum.[3] This change gave afforded high temperature strength, also improved high resistance. Still, the greatest change has happened in the nickel, where high degree of tungsten and rhenium are present. These elements are very efficient in solution strengthening.[3] After 1950 s the evolution from moulded to conventionally cast to directionally solidified to single crystal turbine blades has conceded a 250 °C rise in allowable metal temperatures. On other side cooling developments have repeated this value in terms of turbine entry gas temperature. An important recent part has come from the alignment of the alloy grain in the single crystal blade, which has appropriated the elastic properties of the material to be controlled very closely. so these properties successively control the natural frequency of the blade[2] If metallurgical development can be tapped by reducing the cooling air quantity this is a potentially important performance foil, as for example the Rolls-Royce engine employs about 5% of compressor air to cool its row of high pressure turbine blades. On other side single crystal alloy, is able to campaign about 35 °Chotter than its precursor. Its seem a small increase, but it has permitted the course intermediate pressure turbine blade to stay uncooled[2] : Capture1.PNG CES GRAPH FOR MATERIAL SELECTION DENSITY VS PRICE Capture mcpvs thermal.PNG FATIGUE STRENGTH VS THERMAL CONDUCTIVITY Capture2.PNG Continuing Development: In the past several decades, thermally deposited ceramic coatings on metallic turbine blades have look turbine engine to operate at higher temperature,and agreeing to the law of thermodynamics, higher efficiencies.[6] Ceramic thermal barrier coating have got improved performance in turbines engines for propulsion and also for power generation. Enforcing a coating of refractory insulation ceramic to metal turbine blades and vanes allows the engine to run at higher temperature as belittling hurtful effects on the metal blades.[1] On going, an advance in high-tech materials is allowing even more opportunities in these areas. By mixing these new materials with a adept understanding of coating engineering precepts and application technologies, coating industries will be able to extend an additional performance improvements in the future. To amend coating performance, various engineering concepts must be believed concerning the quality of the ceramic coating. First, the coating material should be selected so that it is refractory enough to protest the higher temperature at the surface and have a low bulge thermal conductivity to derogate heat transfer to the metallic blade below. in adequate ,the thermal expansion of selected material should nearly match that of the metallic substratum to understate potential stresses.Yttria stabilized Zirconia(YSZ) is the manufacture standard first generation coating material are applying nowadays[1]. However, in second generation coating must have grain and pore structure that will minimize thermal-conduction to the metal-ceramic interaction. A low-density coating is normally made using state-of the-art deposition processes and is splendid of allowing an insulating barrier. The coating should have plenty porosity, hence it cuts the thermal conductivity at the same time it adhering to the metal turbine bond-coat layer. Substantial amount of micro structural engineering in thermal barrier coating is ongoing, example of this reality, is the accessibility of double and triple-layered microstructures for special application.[1],[2],[3] At last, the coating should bind to the turbine blade during operation. Failure of the adhesion(spalling) would suddenly disclose the metallic blade to high temperature, doing austere corrosion , settled creep or melting. In general, a metallic bond coat that shows good adhesion to both the metallic turbine and the ceramic coating is enforced. [4] Creation of thermal barrier coatings: It is also significant that the ceramic coating be homogenously used to the surface of the turbine blade. This is accomplished by either ELECTRON BEAM PHYSICAL VAPOUR DEPOSITION (EB-PVD) or ARC PLASAMA SPRAYABLE (APS) powder method. [1] EB-PVD is the process presently advocated for high quality coating. In this proficiency a cylindrical metal bar of the coating, material is vapour with an electron beam, and the vapour uniformly condenses on the surface on the turbine blade. One of the significant advantages of the EB-PVD process is the strain-tolerant coating that is developed. This columnar strain-elastic structure is said to cut down the elastic modulus in the flat of coating to values nearing to zero, thereby raising the lifespan in term of flight hours or cycles of the coating. Early advantages of the EB-PVD ceramic coatings admit fantabulous adherence to both polish and crude surfaces. The final coating is also smooth, requiring no surface finishing. Additionally, the vapour deposition sue could not plug air-cooling holes in turbine blades during deposition. [1], [2], [3] Fig 4 Schematic EBPVD process, the entire fabrication would be under vacuum. Rotation of the electron beam is received by magnetic field vertical to the drawing Fig 5 Schematic microstructure of a thermal barrier coating (TBC)obtained by electron beam physical vapour deposition(EBPVD).the columnar microstructure substantially raises the strain resistance and hence this thermal cycling life. In the APS powder application method, the ceramic material is in the form of a flow powder that is fed in to plasma torch and dispersed molten on to the surface of the metallic substrate. Drops of molten material form†³ splats†³ on the metallic substrate. Sprayed coatings have half the thermal conductivity of the EB-PVD coatings and are hence isolators that are more beneficial. [1],[2],[3] Fig 6 Schematic microstructure of thermal spray coating, it shows only a elite layer of particles The †³splats†³ form a thin plate (lamella) structure of thermal coating of fissures with a non-uniform density and pore size. Fig 7. Schematic microstructure of a thermal barrier coating (TBC) received by air plasma spray (APS). In contrast to EB-PVD coatings, APS coatings need a rough deposition surface for adept adhesion. In addition, thermal sprayed coatings are more prostrate to spalling, cutting the operation lifespan of the coating relative to EB-PVD coatings. Thermal -sprayed parts are also not as reclaimable as part coated by EB-PVD since the wide spalling and extrinsic cracking do the APS coated components to be damaged beyond repair. Still the equipment, movability and lower production cost of APS frequently makes the process more commercially attractive than EB-PVD.[1],[2],[3] Importance of the coating source: In the thermal barrier coating job, is significant to believe the material source (block of metal) associates to the quality of the final coating. For example metal bar for EB-PVD must have a high purity (over 99.5%) and a coherent and uniform density and pore structure. If the ingots are too dumb, they will undergo serious thermal shock when they find electron beam. [4] In a ingot of in homogenous density of porosity, closed porosity may exist. In this case, the release of cornered gas may also do spitting of eruptions. Molten patters, when trapped in the coating, will cause defects and potential failure sites. The optimum density for an EB-PVD barrier coating ingot is usually in the range of 60-70% of theoretical density. If the density is lower than the previously mentioned values, the efficiency of the process is reduced. [4] Arc -plasma spray able powder must have a particle size large sufficiency to flow through the plasma torch but not so prominent that the entire particle is not melted coming out of the plasma gun. Inadequate to the composition, the particle size dispersion and flow ability are major considerations for APS thermal spray powder. [4] While YSZ has been the industry standard first generation coating material, it has a number of retreats that block the improvement of thermal barrier coatings. One trouble is its lack of phase stability at high temperatures. Three commonly formed phases gets out in the zirconia-rich section of the zirconia-yttria binary system: cubic, tetragonal and monolithic. Under operation or making conditions, phase transformations can occur that cause mechanical stress and promote sapling or bond coat failure. In addition, although YSZ has a low thermal conductivity (2.4 W/m K), a refractory ceramic material with a lower thermal conductivity than the YSZ would be suitable. If the coating liberally forms and compactness as in service, the thermal conductivity will slightly increase by thermal shock sensitivity. Hence, materials at least as refractory as YSZ are wanted. It can also be difficult to cope with the thermal expansion of YSZ-comprising coatings to the bond coat layer and the metal subs trate. A great allot of research is currently under way of determine improved materials for thermal barrier coatings. Ready to answer to that requirement, a class of lanthanide zircon ate pyrochlorides(Lnà ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡Zrà ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡Oà ¢Ã¢â‚¬Å¡Ã¢â‚¬ ¡) [1],[4] These materials have lower thermal conductivity than YSZ (1.5-1.8 W/m k), as well as improved phase stability above a broad range of compositions and temperatures. In action they are less liable than YSZ to sintering during operation, hence showing a thermal expansion agree to the bond-coat layer as adept as of better than YSZ. the decreased thermal conductivity of the coating made with these material could admit the turbine to carry at higher temperature and therefore the efficiency should be increased .it could also permit the turbine blade to stay cooler, checking those thermal processes that conduct to coating failure and increasing utile lifespan of the turbine. Fig 8. Micrographs of Laà ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡Zrà ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡Oà ¢Ã¢â‚¬Å¡Ã¢â‚¬ ¡ and YSZ coating 7. Ceramic Matrix Composites (CMCs): Advance increasing in temperature are likely to attain the development of ceramic matrix composites. A number of merely shaped static parts for military and civil applications are in the engine development phase and guide vanes for axial compressors had been produced to demonstrate process potentiality, such proficiencies involve advanced textile handling and chemical vapour infiltration that provide the quality challenge. It will finally appear because the advantages are so high, but it would take much longer to contribute it to an acceptable standard than was anticipated a couple of decades back. [1], [4] Ceramic matrix composites are at cutting edge of advanced material technology since their lightweight, high strength and toughness, high temperature potentialities, and elegant failure under loading. Research work has focused for many years on fibre-reinforced ceramics for this application, as contradicted to monolithic materials, which own enough strength at high temperature but the disable of poor impact resistance. Now commercially available ceramic composites utilize silicon carbide fibres in a ceramic matrix such as silicon carbide or alumina. These materials are able of uncooled operation at temperature up to 1200 °C, hardly outside the capacity of the current best-coated nickel alloy systems. un cooled turbine applications will attain an all oxide ceramic material system, to assure the long-run stableness at the very high temperature in oxidizing atmosphere. An early example of such a system is alumina matrix. To earn the ultimate load carrying capacities at high temperatures, single crystal oxide fibres may be used, giving the opening to operate under temperature of 1400 °C. Higher operating temperatures for gas turbine engines are ceaselessly attempted in order to increase their efficiency. Still operating temperatures increase, the high temperature durability of the components of the engine must correspondingly increase. Substantial advances in high temperatures capacities have been accomplished through preparation of iron, nickel and cobalt-base super alloys. When super alloys have detected broad use for components across gas turbines, options materials have been aimed. Materials holding silicon, particularly those with silicon carbide (SIC) as a matrix material and/or as a reinforcing material are currently being dealt for high temperature applications, such as combustor and some hot section components of gas turbine engines; like combustion chamber, transition duct (which take the combustion products and directs them for the turbine section), the nozzle guide vanes the surrounding cover section and others. CONCLUSION: Gas turbines establish a broad and beneficial choice for power generation used for both, industrial and aerospace applications. This technology calling for better and more reliable materials to use mostly in those section in which temperatures are highly like first row of turbines and combustion chamber. Blades materials for turbine section in gas turbine have encouraged rapidly in last few years. At present, those blades are constructed using special alloys and are protected by some special coats. Those changes are meant to increase the allowed temperature up to 1500 °C without cooling. In this way, overall efficiency increases. Ceramic coating is employed to the surface of the turbine blade using several methods. The most significant ones are ELECTRON BEAM PHYSICAL VAPOUR DEPOSTION (EB-PVD) and ARC PLASMA SPARYABLE (APS) powder method. Like wise the technology aspired to produce better coats, material science is presently working extensile in CERAMIC MATRIX COMPOSITES, organized basically by silicon carbide fibres and special fabrics in order to increase the temperature gap in emplacements specially sensible for gas turbine operation. [1], [2], [3]

Natural Resources And Management Essay -- essays research papers

Natural Resources and Management   Ã‚  Ã‚  Ã‚  Ã‚  Cultural resources are the traces of all past activities and accomplishments of people that includes designated historic districts, archeological sites, buildings, structures, and objects. These also include less tangible forms like aspects of folklife, traditional or religious practices, and landscapes. These nonrenewable resources often yield unique information about past societies and environments, and can provide answers for modern day social and conservation problems.   Ã‚  Ã‚  Ã‚  Ã‚  a ship wreck   Ã‚  Ã‚  Ã‚  Ã‚  an arrowhead a canon   Ã‚  Ã‚  Ã‚  Ã‚  an Indian campsite   Ã‚  Ã‚  Ã‚  Ã‚  Indian rock art   Ã‚  Ã‚  Ã‚  Ã‚  a tin can   Ã‚  Ã‚  Ã‚  Ã‚  a Victorian house   Ã‚  Ã‚  Ã‚  Ã‚  an historic mining town   Ã‚  Ã‚  Ã‚  Ã‚  an irrigation canal   Ã‚  Ã‚  Ã‚  Ã‚  a dam   Ã‚  Ã‚  Ã‚  Ã‚  All of these can be cultural resources. Cultural resources are the physical remains of a people's way of life that archaeologists and historians study to try to interpret how people lived. Cultural resources are important because they help us to learn about our past. These tangible remains help us understand other cultures, appreciate architecture and engineering, and learn about past accomplishments. Furthermore, they offer educational and recreational opportunities and provide links to our past. &nb...

Much Ado About Nothing: An Overview :: essays research papers

Much Ado About Nothing: An Overview It is a beautiful spring afternoon. The air is full of the radiance of freshly bloomed daisies and the energizing chill of the periodic spring breeze. Puffy large cumulus clouds fill the azure sky with gray thunderheads looming off in the distance. Looking down from the clouds, one can see a gathering of finely dressed people. Birds flying overhead hear the murmurs of the crowd gathered for a wedding of gentry. Shakespeare could never have planned the first scene of Act IV in Much Ado About Nothing so well. The serene sky overhead symbolizing the beauty and joviality of the occasion; dark rain clouds looming in the distance foreshadowing the mischief to come. Despite his inability to control weather patterns, Shakespeare developed marvelous scenes which he displayed in his own theater, The Globe. How did Shakespeare portray the emotional aspects of his characters and their strife to his audience? How did he direct the actors and what did the open air stage of The Globe look like? Imagine yourself in London circa 1600, a short year after the completion of the Globe Theater and perhaps a few months after the completion of the play Much Ado About Nothing, Act IV has just begun. Claudio and Hero are facing each other in front of a simple, yet anciently beautiful altar, garbed in Elizabethan costume fit for the occasion. Hero is wearing a long white dress with trailer and high neck which is adorned according to the fashion trends of the time. Claudio has donned a royal looking doublet with silver trim and hose to equally as majestic. Sitting on either side of the couple in ancient pews, shrouded in solemn silence, are Don Pedro the Prince of Aragon, Don John the Bastard, Leonato, Benedick, Beatrice and the attendants of Beatrice and Hero. Facing the couple, positioned in between them so the audience may hear him, is Friar Francis wearing a simple white robe and golden cross, his only posessions. Don Pedro wears a doublet ornately embroidered with golden designs. He is the only person on stage looking finer than Claudio, marking his royal blood to all. The others wear fine doublets and dresses, although not decorated elaborately, to show their respect for the wedding pair. Scene IV actually begins when Leonato stands and makes his brave but respectful request to the Friar to be brief with the ceremonies (IV i,l1). Knowing his duties, the Friar continues square-faced with the wedding by asking Claudio of his intentions to marry Hero (IV i,l5). Without hesitation Claudio responds, "No." (IV i,l6) He means that he does not intend to marry Hero.

Rock and Roll in the Early Fifties Essay -- Music Art Musicians Rock a

Rock and Roll in the Early Fifties Hail, hail rock ‘n’ roll, Deliver me from the days of old. Long live rock ‘n’ roll The beat of the drum is loud and bold, Rock, rock, rock ‘n’ roll, The spirit is there body and soul.† - Chuck Berry (Hibbard and Kaleialoha, 19) An African- American euphemism for making love, rock and roll spurred from all genres of music, but mainly that of folk, country, jazz, pop and rhythm & blues (Yorke, 11). It is a type of music that generally involves heavy pounding of the piano, a loud drum beat, saxophone backgrounds and boisterous shouting by the singer. It was a new blend of music emerging from 1948- 1951 as a result of a generation’s need to express their own identity. Originally, rock and roll was performed by black artists because it was a result of the incorporation of a more upbeat background to rhythm & blues. Examples of such artists would be Little Richard and Chuck Berry; both were coined â€Å"the fathers of rock and roll† even though they started out as rhythm & blues artists (Szatmary, 16). In context of â€Å"Cat on a Hot Tin Roof,† the characters most likely to support rock and roll are Maggie, and Mae’s children. This new upbeat, new- age, gibberish was a sy mbol of independence, escapism, and rebellion for youths of the early1950’s (Brown, 4). Although its initial peak of success occurred in 1956, rock and roll had been developing since 1951. The introduction of the 45 rpm disc, transistor radio, and television; and finally, its lively, upbeat sound all contributed to the success of rock and roll(Peterson, 102- 104). The â€Å"baby boomer† generation after the Second World War, was a major influence on the success of rock and roll. Unlike their parents, this g... ... Roll. New Jersey: Prentice- Hall Inc., 1996. This book provides a very detailed outline on how and where rock and roll originated. It places much emphasis on the transition from Black to White rock artists and how society reacted to this change. Szatmary also presents sufficient information on the many aspects of rock and roll, ranging from what the lyrics are about, to the beginnings of rock and roll and new age rock. - Yorke, Ritchie, Rock- The History of Rock’n’Roll. New York: Methuen/ Two Continents Publications, 1976. In Rock- The History of Rock ‘n’ Roll, Yorke provides a chronological approach to rock and roll from 1877- 1974. Although it is not extremely detailed, a general overview of each year’s music is presented. Throughout the book, many descriptive summaries of individual artists may be found along with classic pictures.

Shadow Divers

Shadow Divers By: Kurson, Robert Shadow Divers by Robert Kurson is a true story of a few ordinary men risking everything to solve a World War II mystery, which even governments had not been able to budge. One is introduced to Bill Nagle at the start of the book. He is given a location of the mystery object from a fisherman. Nagle is the caption to the Seeker and had a feeling that this dive will be a life changer. So he meets with John Chatterton, the only man that he can trust on a dive like this one. Chatterton has been diving for almost his whole life and is known as one of the best divers in the world in 1991.Nagle and Chatterton proposed a plan to take six top divers to the site and see what was down there. On the first dive Chatterton finds out that the object is a submarine and in a later dive finds that the submarine is a German U-boat. They know this because of a peace of china Chatterton found with an eagle and the swastika, the symbol of Hitler’s Third Reich on it. Chatterton also found a knife with the name Horenburg hand carved into the handle. The problem is that they do not know what U-boat they just found. All records show that no German U-boat was sunk in that area.To solve the mystery Chatterton has to bring Richie Kohler on board because Nagle is dying from liver poisoning. Kohler is also one of the best divers, yet Chatterton and Kohler do not get along very well. Kohler tried to steal one of Chatterton’s dive sites a long time ago, when the two first met. Over time Chatterton and Kohler become best friends and spend six years of their lives trying to solve the mystery of the German U-boat. Within the six years they found tons of artifacts that do not get them any closer to finding the name of the U-boat.The only major clue was the name Horenburg, yet there was only one Horenburg and he died in a U-boat 2,000 miles away on another U-boat. After, Chatterton and Kohler had leaped over many hurdles and had lost almost everything t hey had in their lives, Chatterton came up with a plan to resolve their mystery, yet it could kill him in the process. He would go into the submarine and take off his oxygen tank to fit through a tiny hole. On the other side he would look for an old oxygen tank that will have the name of the U-boat on it.Then, push it through the small hole to Kohler and Chatterton while doing all of that with only five minutes of air. Risking his life he goes through with his plan and after it all he and Kohler get their name, U-boat 869. Word: Hurdle /noun /? h? rdl – Difficulty, something that impedes progress or achievement Word: resolved /adjective /ri? zalvd – Settled, find an answer Explanation: The words are important because Chatterton and Kohler feel that it is up to them to resolve the mystery of the submarine for the fallen soldiers and had to go through many hurdles to get there.

Computer Input and Output

Other data is originally recorded in a form that is acceptable to the computer L] Magnetic ink character recognition (MICE) C] Optical character recognition (OCCUR) This approach is called SOURCE DATA AUTOMATION third basic way to enter data into the computer is to key it into an online key driven device. CIA fourth option permits data input in audible form, using a voice recognition unit. Input Options Source data Key to tape Machine Computer readable data OCCUR docs MICE Keyboard Terminals MICE, OCCUR units Card, tape, disk Units Chain Nell Voice Recognition CPU Output offers similar options.Information or data can be recorded on a permanent medium, such as paper, microfilm, or punched cards, or the information can be displayed on a television like screen or resented audibly. OUTPUT options Chain Nell print information Termini al Display Plot Computer Output Microfilm Microfilm Microfilm Im printer Card punch Unit Punch Cards Viewer Channels and Control Snits The control unit conta ins the logic circuitry and storage needed for the control of multiple 1/0 devices. The channel contains the logic circuitry and storage needed to monitor several 1/0 device control units and provide pathways to and from the CPU.Role of Channels and Control Control Units High Speed Control unit Low Speed Jinni 1/0 Devices Channels and Control Units The transfer of data between the 1/0 unit, he control unit, and the channel is serial, or one byte at a time. When this operation is performed, the CPU can process other data in primary storage. The CHIP halts processing just long enough to enter the data from the channel. The interruption of the program in process is very brief because all of the bytes from the channel are transmitted to primary storage at once-?in parallel. The transfer of data from primary storage to an 1/0 unit works in the reverse sequence.Smaller computers have only one channel; larger systems have many. Importance of the channels: 0 Easy to overlook, but without th em CPU reference would be drastically reduced. C] The channel hardware and the operating system permit the multiprogramming that maximizes computer productivity. Without channels, there COUld be no time sharing or distributed processing, and batch processing would extremely slow and costly. SKYDIVER INPUT DEVICES Offline Skydiver Devices The most common input device was the keypunch machine. CLC The first key-to-tape and key-to-disk units used conventional magnetic tape reels and hard disks.Offline skydiver Machines Keypunch disk Punch Cards co Zion magnetic Tape Cassette Hard disk Floppy disk Reader Magnet ICC tape Cassette et ICC disk Floppy disk Magnetic tape cassette Contains 285 Ft. Of polyester. Data can be recorded at the density of 800 bytes per inch. Capacity: approximately 2000 punched cards. Floppy Disk Sizes: 5 1/4 inches and 8 inches in diameter. Capacity: 2000-8000 punched cards. KEYED MEDIA INPUT UNITS Card-reading and punching 0 Card reading speeds of 2000 per minute are not uncommon, but punching speeds are in the range of 100-250 per minute.C] Punched cards are used as turned around documents. Punched cards are also used to track materials as they flow through a plant or a distribution network. Floppy disk, Cassette, and Cartridge readers CLC Cassette, and Cartridge readers tapes are produced as a by-product of another operation Online skydiver devices TWO basic types of keyboard terminal: Displays output on a CRT C] Prints output on continuous paper form. Online skydiver devices CRT terminal- also called an ALPHANUMERIC DISPLAY TERMINAL and a VIDEO DISPLAY TERMINAL, is all – electronic, noiseless, and economical.C] Can display information very rapidly, filling the screen with characters much faster than the characters can be printed on the paper. Special features: CLC Color C] Reverse video 0 Blinking CLC Cursor L] Scrolling C] Paging C] Protected format Hard copy terminal – also known as TELEPROMPTER TERMINAL, is a terminal wi th paper output TWO basic categories of hardcopy terminal: C] Impact -? causes a print â€Å"hammer† to strike the paper to form the character Monomaniac – causes characters to be printed by means of some chemical or heat process, or by spraying the characters on the paper from an ink jet.

Brita Case Essay

The Brita Products Company began in 1988 under the recommendation of Charlie Couric, a marketing executive with the Clorox Company. Optimistic of its capability to be profitable, Clorox acquired the right to market the home water filtration system. Clorox, citing the overriding long-term benefits of continuous filter sales, initially engaged in deficit spending. Such measures paid off and Clorox not only created a $350 million market, but also captured 70% of the market revenue. Brita enjoyed success in the market by creating a perception of better tasting water. However, as ater purification technology improved and consumer awareness increased, taste alone was no longer enough to sustain its massive market share. Consumers are demanding more in terms of health benefits and Brita needs to respond to their growing needs and wants. The market environment is characterized by fast growth. As consumers are becoming more health-conscious, bottled water and water- filtration systems are becoming a necessity for most, with a Brita pitcher in 1 out of 7 homes – 103 million households. Brita’s competitors were unable to effectively rival Brita in pitcher sales. Brita dominated despite many new entrants to the market. However, a small competitor, PUR, launched a different water filtration product. PUR’s faucet-filter system offered added health and convenience benefits that Brita’s pitcher couldn’t provide. Now suddenly, our competitors came up with the first mover product. Thus Couric is considering allocating resources to launch a faucet-mounted filtration system in response to these emerging competitors. Many think Brita needs to capitalize on this opportunity to gain new consumers while their name still remains synonymous with quality and taste. Thus raising the question, how should Brita attempt to further penetrate the market with their products? Lets take a look at the Pros and Cons of each option: Option 1: Implement the new faucet mount filtration system The Purpose This writing aims to present one possible solution to the dilemma that Clorox Company faces. The Clorox Company was the market leader in water filtration in the USA with the Brita Pitcher (one of the Clorox’s most important product), but in 1999 they faced the threat of a new product ‘ the faucet mounted filter. Clorox already had its own version of this new product ready to launch into the market, so the issue was to decide the best of the following strategies: 1 . Continue selling only the current product; 2. Introduce their new faucet mounted filter in addition to the pitcher into the market 2. The Analysis Market Summary Clorox launched in 1988 the Brita Pitcher and after a decade they were the market leaders of water filtration systems with a market share of 69%. After the Brita pitcher launch, the water quality became a growing concern to consumers. This new attitude about the quality of drinking water allowed the purified water market to grow in both bottled water and filter systems. This growing on the water market, allowed Clorox Has not defined product Market segmentation

Gender Discrimination in the Workplace

Discrimination Against Women in the Workplace Unfair treatment of women has been prevalent throughout time. Although there have been many movements to attempt to terminate this tendency, it is still ubiquitous in today’s society. Sex discrimination in the workplace occurs when women are treated differently because of their gender. Many factors influence employers and coworkers to display prejudice against women. Gender bias in the workplace is an unfair practice that results in lower payment, disrespect, and an overall bad occupation experience for victims.Gender discrimination is not necessarily a new issue, but it remains to be a major struggle despite the attempts that have been made to stop it through legal manners. In a report by The Institute for Women’s Policy Research’s Ariane Hegewisch, Cynthia Deitch, and Evelyn Murphy, the results of these attempts are summarized on both simple and complex levels. â€Å"The 1964 Civil Rights Act prohibits employers fr om discriminating in their employment practices on the basis of race, color, religion, sex, or national origin.Although Title VII banned employment discrimination, it did not require specific actions to achieve this objective. † Because the Act lacks such a critical detail, employers are able to avoid obeying it very easily. Laws besides the Civil Rights Act have been put into place in order to reduce unjust treatment in the workplace. For example, in 1963 the Equal Pay Act was passed. This act was supposed to end â€Å"the practice of paying men more than women when performing the same jobs and duties. Despite these protections, many women still feel gender biased discrimination is a problem† (Gluck).The effects of both the Equal Pay Act and the Civil Rights Act have obviously been minimal, seeing as women are still very much looked down upon in the workplace. One of the most direct effects of sex discrimination in the workplace is the stereotyping that occurs. The mas s overrepresentation of men in â€Å"senior management positions† is a sub-result of discrimination (â€Å"Sex Discrimination and Sexual Harassment†). The favoring of the selection of men over women for promotions has had a dramatic effect in the workplace over time. â€Å"Stereotypical views regarding gender can cause supervisors to engage in the llegal practice of passing a person over for promotion due to gender. Supervisors most often pass over women due to preconceived notions about their roles and abilities† (Gluck). Stereotypes about women come not only from their under representation in the workplace, but from preconceived notions about their family roles. Even If a woman is hired without being asked about her family responsibilities, once she takes the position, her boss can â€Å"view her employee file to see that she has young children† and then will be able to â€Å"give her less responsibility or assign menial tasks to her that do not fit he r job description.Although illegal, this practice still exists in offices today† (Gluck). Once again, employers ignore the laws put in place to stop discrimination because of stereotyping. The only way gender bias will disappear is if stereotypes disappear as well. One of the reasons sexual discrimination is so prevalent today is that sexual harassment has become so accepted in society and in places of employment. â€Å"Women have long been exposed to workplace harassment which involves conduct of a sexual nature or is premised on the sex of the victim† (McCann).Because of the wide range of behaviors that are considered sexual harassment, it is difficult to identify some action as harassment, which means rules against it are easy to ignore. Sexual harassment has terrible effects on the morale of victims. A loss of motivation â€Å"necessary to perform their jobs effectively† is one of the most notable results of bias (Gluck). â€Å"Offensive jokes of a suggestiv e or sexual nature and jokes implying that an employee’s work is sub-par due to her gender† are one of the major causes for the loss of motivation that victims experience.Sexual discrimination is obviously an extremely negative practice, but one of the most devastating effects of the prejudice is the payment gap between men and women. According to the Institute for Women’s Policy Research (IWPR), â€Å"in 2011, female full-time workers made only 77 cents for every dollar earned by men, a gender wage gap of 23 percent† (â€Å"Pay Equity & Discrimination†). IWPR predicts that â€Å"if change continues at the same slow pace as it has done for the past fifty years, it will take almost another fifty–or until 2056–for women to finally reach pay parity. Such inequality in payment is absurd, especially since â€Å"women compromise 47% of the total U. S. labor force† (â€Å"Women’s Bureau†). Throughout history, women have battled gender discrimination inside and outside of the office. The difference in payment of men and women is a significant problem that needs to be paid more attention to. Once stereotypes are dissolved, problems with gender bias will dissolve as well and the payment gap will become easier to close. Until then, the laws that have been imposed need to become enforced more strictly and individuals need to pay more attention to sexual harassment norms.Women deserve every right that men have and vice versa. Sexual discrimination affects all of society in some way or another, so it is important that society’s members work towards ending it. Works Cited Gluck, Samantha. â€Å"The Effects of Gender Discrimination in the Workplace. † Small Business. N. p. , n. d. Web. 11 Mar. 2013. Hegewisch, Ariane, Cynthia Deitch, and Evelyn Murphy. Ending Sex and Race Discrimination in the Workplace: Legal Interventions That Push the Envelope — IWPR. Rep. N. p. , 2008. Web. 24 Mar. 2013. McCann, Deirdre. Sexual Harassment at Work: National and International Responses, Conditions of Work and Employment Series No. 2. † Sexual Harassment at Work. N. p. , n. d. Web. 03 Mar. 2013. â€Å"Pay Equity & Discrimination. † — IWPR. N. p. , n. d. Web. 24 Mar. 2013. â€Å"Sex Discrimination and Sexual Harassment. † Knowledge Center | Catalyst. N. p. , 1 July 2012. Web. 11 Mar. 2013. â€Å"Women's Bureau (WB) – Quick Facts on Women in the Labor Force in 2010. † Women's Bureau (WB) – Quick Facts on Women in the Labor Force in 2010. N. p. , n. d. Web. 24 Mar. 2013.

The Effect of Employee Training and Development as a Human Resource Essay

The Effect of Employee Training and Development as a Human Resource Practice on Productivity - Essay Example Emphasis on the different theories and the merits and demerits of the theories will be discussed. Since the aim of the dissertation is to understand the effects of training and development on employee productivity it is essential that a case is taken into consideration. The study conducted in this dissertation uses data from a company – British American Tobacco Ltd. UK., to discuss and understand the effects of training and development on the employees and how the productivity of employees is affected by these human resource practices. The Human Resources departments of various companies and corporations who are actively working on improving the performance and productivity of employees or are preparing proposals to the management on implementing different training and development processes to improve the productivity of employees. The key issues that will be discussed in the dissertation are the effect of training and development programs on employee productivity. The merits and demerits of including the training programs for graduate employees will also be discussed. As the company spends a lot of its resources in training of employees it is essential that the results got from these programs are beneficial for the company. Also, a brief discussion about why training programs might not be useful in certain cases will also be discussed. Recommendations for the company will include steps the company can take to ensure positive results in the form of better productivity of employees will also be discussed. The companies website states a lot of different programs that BAT offers for new starters, this will also be discussed in detail to analyze the usefulness and appropriateness of the programs. Another issue that will be discussed is the effectiveness of the theories that have been derived over the past years. A detailed explanation of the different theories will be discussed and an analysis of the theories will be made.

Slavery and the Mississippi Secession Essay Example | Topics and Well Written Essays - 1750 words

Slavery and the Mississippi Secession - Essay Example Using that as the basis, they argued that the Union was taking away their right to own said property and land; and taking the ability to succeed in commerce with the property owned. They felt the Union had interfered with their ownership by allowing escaped slaves to take fugitive in the Free states, by denying protection to the slave ships on the high seas, and removing the ability to acquire more land. In President Lincoln's inaugural address, he specifically addressed the slavery issue with this statement: "I have no purpose, directly or indirectly, to interfere with the institution of slavery in the States where it exists. I believe I have no lawful right to do so, and I have no inclination to do so." In fact, the emancipation proclamation did not necessarily free all slaves but those who lived within the Union States. President Lincoln was much more interested in preserving the Union of the United States and felt the South had no right to just arbitrarily seceded: "Again: If the United States be not a government proper, but an association of States in the nature of contract merely, can it, as a contract, be peaceably unmade by less than all the parties who made it One party to a contract may violate it-break it, so to speak-but does it not require all to lawfully rescind it" There is particular irony between the reason statement: "It advocates negro equality, socially and politically, and promotes insurrection and incendiarism in our midst." and the further reason statement: "It has enlisted its press, its pulpit and its schools against us, until the whole popular mind of the North is excited and inflamed with prejudice." followed by the announcement: "Utter subjugation awaits us in the Union, if we should consent longer to remain in it." (Readings # 109, p. 406) In the first statement, written as one of the reasons for the declaration of secession, they claim that the Union was promoting equality among the slaves, and promoting the slaves to violence if necessary. Within the same document the authors cite their own personal freedoms as reason to secede. But the majority of the document is about how the north (or the Union) is treating the south (or the Confederate States) as non-equal members telling them what they may or may not do. The document descri bes that the result of following the Union dictates would be utter social ruin and complete loss of property, valued at 4 billion dollars. Looking at the value only, one could understand their desire to remove themselves from the Union and by the same token, one could understand the desire of the north not to lose such value. Abraham Lincoln summed it up better in his Gettysburg address, which was written after the start of the Civil War: "All men are created equal." "This nation, under God, shall have a new birth of freedom; and that government of the people, by the people, for the people, shall not perish from the earth." November 19, 1863 "A Declaration of the Immediate Causes which Induce and Justify the Secession of the State of Mississippi from the Federal Union" Reading 109. Third Edition. Readings in U. S. History to

Exemption(s) for Certain Conveyances of Family Farms or Family Essay

Exemption(s) for Certain Conveyances of Family Farms or Family Business - Essay Example For exception of land transfer tax for conveyance of farmed land from individual (i.e. Father, Part 'A') to Family farm corporation (i.e. Son, Part 'B' (Owner of a Farm Corporation)) regulation 697 specifies the following requirements: First the transfer of land should me made between family members in which part 'B' is the owner of a farm corporation. Second requirement is that after transfer of farmed land the farm corporation will use the land for farming purpose only. No other use of the land is permitted. The first & second requirements of regulation 697 are similar to both individual to individual & individual to Family Farm Corporation. The Third requirement of regulation 697 is different in transferring the farmed land from individual to family farm corporation. In this all share holders of family farm corporation should be related to individual (Part A) who is transferring the land. Family Farm Corporation should have 95 % farming assets. During determination of farming asse ts the value of interest in the land being conveyed shall be included as an asset of the corporation. According to this regulation 697- there are some exemptions in land transfer tax that belongs to the same family it means if an individual transfer business land to its family member

Difference between Noir and Neo-Noir Assignment Example | Topics and Well Written Essays - 750 words

Difference between Noir and Neo-Noir - Assignment Example All the films of this type had similar idea and topic. Often they described difficult situations that had to be overcome by the antihero. The introduction of antihero is a very important characteristic of noir style. The main hero was not noble and positive, he had many drawbacks, but still managed to make readers like him. The key element of this type of films was portraying the life of people with negative characteristics or bad reputations. The lives of criminals and gangsters were often used as central theme. The noir films were created in 1940 -1950 until the new term was introduced. In the 1970s the term â€Å"neo-noir† appeared. The difference between the genres was in the technologies that were used in the 1970s. Another peculiarity of the neo-noir films was their modernization, as they commonly depicted events, which happen at the time when they were created. Such type of movies appeared due to the great number of social attitudes. The noir films managed to change the views of people. The possibility to have any kind of relations with the antiheroes and not just to reject them was the main idea of the noir films. The noir films made people like and admire the main heroes. The position of the neo-noir films where one had just to observe and not to be a part of the performance was quite different. The theme of the film predetermines such attitude of the watchers. A number of new topics were presented by neo-noir films (Difference between Noir and Neo-Noir). The Double Indemnity is the classical noir film that was created in the 1914 by Bill Walder. The film was based on the play by James Keyne, which had the narrative character or technique. The Double Identity was included in the list of films of the National Register by the Congress Library in 1992. According to the critics, this picture is the most completed and recommended tutorial on the noir films. One of the brightest femme fatale images in the history of filmmaking was create by the Barbar a Stenwick. Experts state that film by Walder had become the model for a number of films about vamp women, who ruinously influenced the honest men. In the 1981 the movie was re-shoot under the title Body Heat. The title of the movie depicted the traditional state of the insurance policy of that time that provided the guarantee of the double payment in case if insured person died from the accident. A handsome insurance agent Walter Neff, the hero of Fred Murrey, met the fatal blonde Fillis Dietrichson that was played by the Barbara Stenwick. Dierichson easily charmed the main hero Neff. The name and the manners of the main heroine remind us about Marlen Dietrich. Dietrichson manipulated Neff and persuaded him to get rid from her husband and in order to guarantee the prosperous life in future gave the insurance policy with the double indemnity for signature to her doomed husband. The criminals had realized their plan skillfully. The next day the coworker and the friend of Neff Barton Kiz intervened. Not even suspecting Neff he turned the life of the murderer into nightmare. Keyne’s narrative was based on the real crime that was committed in the 1927 and stirred up the whole America. First drafts appeared in the 1935 but they were banned by the advocates of the Heise Code who considered the story to be immoral. The isolated detached houses of 1920s build in the colonial style were chosen for shooting. You can notice the script writer Raymond Chandler who had accidently been in the

Using Your Manager Skills Research Paper Example | Topics and Well Written Essays - 1000 words

Using Your Manager Skills - Research Paper Example Most companies are using sustainability as a key component in their business strategies. Consumers have also increased their demand for companies to be attentive to their environment of operation. The price of petroleum-based packaging plastics has continued to rise leading to a decline of its competitive advantage over biodegradable packaging material. The Energy Information Administration (EIA) foresees a continued increase in the prices of the plastics in the coming year (Pekhtasheva, & Neverov, 2012). This will boost the marketability of the biodegradable material. Simply Green Products Company has capitalized this market trend and established product chain of biodegradable packing materials. Valued at $10 million, the company produces packing material for pears, apples and peaches that orchards use in the Shenandoah Valley. For its marketing, Simply Green Products has adopted the name SafePack to imply the biodegradability of the material. The eco-friendly agricultural that is e mphasized by lobby groups has contributed to the market advantage of SafePack over the non-biodegradable packing material. However, there have been recent internet campaigns that argued that SafePack is not biodegradable. The environmental group, SafePack Materials Pollute, which is behind the campaign, argues that SafePack materials cause environment pollution due to seepage into surface waters. The group campaign is done on the internet where fruit producers are discouraged from buying SafePack materials. The issues raised by the group touch on the Clean Water Act (CWA) and Solid Waste Disposal Act (SWDA). It is necessary to assess the environmental concerns raised by the environmental group against the relevant laws so that the company can devise strategies to safeguard its market. The claims made by the lobby are critical to the reputation of Simply Green Products. However, for such claims to be considered valid under the law, they

Homework Case Study Example | Topics and Well Written Essays - 250 words - 5

Homework - Case Study Example The employees think that they will have lesser control over their functions and that the new way of doing things is posed to lessen their influence on strategic operations of the organization. Finally, and obvious resistance to change is the lack of skills especially in computer technology. Most employees are wondering how they will cope with information systems that they barely understand. The first step in dealing with resistance to change is awareness creation among all employees. Awareness creation should take place early enough so that the employees can understand the urgency and need for the proposed change. After creating awareness, it is imperative to train employees in the necessary skills for handling computer programs. In this case, Martin should develop training programs that focus on fully equipping employees with the computer skills. Another way of dealing with resistance to change is diversifying job functions since computers will render some staff jobless. There should be initiative to encourage task diversification so that employees can handle more than one function within the

Management and Organisation individual report Essay - 2

Management and Organisation individual report - Essay Example These two are derived from the set textbook by Mullins, Essentials of organisational behavior, 3rd Edition. Further, competitive advantage will also be explicated with inputs of strategy and structure on the management process, and lastly, a conclusion will be drawn as the researcher’s overall perception regarding the nature of management and the integration of strategy and structure. Management is the method consists of modelling and supporting of a particular ambience wherein entities are effectively working together in one purpose (Koontz & Weihrich, 2008, p. 5). The management of activities is usually held by a manager or a supervisor to ensure the effectiveness of operations. The management of it is integrated with strategies, following the organisational structure of the organisation. As defined by James Brian Quinn (1980, p. 3), strategy is the model that incorporates an entity’s principal aims, policies, and series of operations into a coherent entirety (quoted in John & Gilles, 1997, p.176). Strategy is usually long term in nature as compared to tactics that are also formulated to achieve a specific goal but in a short period of time. Organisational structure pertains to the formal flow of organisational knowledge, precise sectioning of various business operations, and the model of frameworks to assure the effectiveness and efficiency of business activities across different units (Daft, 2010, p. 90). This includes precise organisational levels, concise departments, and optimum system to achieve the highest degree of efficiency towards job performance. The disposition of management is derived from the notion that what it is inculcated in the minds of the managers that are required to be understood (Stewart, 1984, p. 324). In specific terms, the nature of management can be depicted as the things that managers should do in order to create an effective strategy. Another notion in understanding the disposition of management depicts the certain

Short stories Essay Example for Free

Short stories Essay Traditional detective stories fall into three groups, whodunit murders,mysteries with a twist in the tale and locked room stories.  A whodunit mystery is a story where the detective has to find out who commited the murder by unravelling a series of clues that will eventually lead him to the murderer.There are usually a group of characters who are potential suspects because they have either a method or a motive for the crime.As the story moves on the detective slowly eliminates all the suspects in his mind until only one remains. The detective then usually calls all the suspects together and reveals the perpetrator.When the villain is taken away the detective them goes on to explain how he assembled all the clues and how they led him to the murderer. An example of how Conan Doyle exploits this is in the Cardboard Box when a cardboard package is sent to Miss Susan Cushing with a pair of preserved human ears in it and no-one knows why or who the ears belong to.Conan Doyle exploits this by removing the elimination process and turning it into a hunt for who the ears belong to and who must have killed the owners. After using his powers of observation, I percieved that her ear corresponded exactly with the female ear which I had just inspected. The matter twas entirely beyond coincidence.There was the same shortening if the pinna,the sam broad curve of the upper lobe,the same convolution of the inner cartilage.In all essentials it was the same ear. He comes to the conclusion, that one of Miss Cushings sisters, who is mentioned at the beginning of the story, and her lover were killed by her jealous husband.He was driven back to drinking by the rumours spread about him by the third of the Cushing sisters. The Mystery with a twist is a story that appears to follow the traditional lines of a murder or a crime story but then has an unexpected twist at the end.An example of how Conan Doyle exploits this is in the Silver Blaze story.In Silver Blaze a prize winning horse has been stolen and its trainer murdered.Sherlock Holmes is then called in and after following a series of clues he comes to the startling conclusion that Silver Blazes trainer,John Straker was not murdered but was kicked in the head by his horse when trying to sabotage its chances in its next race. The horse had then run away from its stables and was picked up by a rival stable owner; then kept hidden by painting it brown and passing it off as one of his own horses.A long series of clues were pieced together to lead to this conclusion.So the twist in this tale was that there was no murder when from the start all the evidence make it appear so. The locked room story type is a story where a murder has been commited in a locked room but there is no murderer,no murder weapon and no evidence of a suicide.In the Speckled Band a murder was commited two years ago but no-one knows how or why the girl died because she was in a locked room with barred windows and there was no evidence to show how she died apart from fright.Conan Doyle exploits this by having Holmes be visited by the sister of the murderd girl and say that she is afraid that the same thing will happen to her. Yet if the lady is correct in saying that the flooring and walls are sound,and that the door,window,and chimney are impassable,the her sister must have undoubtedly been alone when she met her mysterious end. Holmes is trying to find out from the beginning how a murder could take place in a locked room with no way to enter. After visiting the house, Holmes and Watson decided to stay in Ms.Stoners room and while they are there a snake drops through the ventilation shaft, which was intended to kill Ms.Stoner.The snake then retreats back through the ventilation shaft and bites Dr.Gimesby Roylott the owner of the snake.It can seem very obvious from the beginnning of the story that Dr.Roylott has something to do with the murder but there is no evidence to prove this.Holmes then using his powers of deduction and observation uncovers Dr.Roylotts plans but inadvertantly causes his death. The genre used in the Red Headed League is that of a simple mystery.At the beginning it is not obvious that a crime is being commited but it is obvious that something very strange is happening.Conan Doyle exploits this by not giving us a target to point our suspicions at because there is no murderer that needs to be found or stolen property that needs to be recovered.There is just a simple mystery that leads on to a much larger one. The mystery is that a Mr.Wilson had been admitted to this organisation called the Red Headed league who would pay him four pounds per week to copy out the Encylopaedia Britannica. He thought this a bit odd but carried on with it for a number of weeks until one day the offices of the League were closed.He then went to see Sherlock Holemes,who after investigating the mystery found out that a much larger plot was at work. Mr.Wilsons apprentice pawnbroker Vincent Spaulding is really a wanted criminal who set up the League with a friend as a way of getting Mr.Wilson to leave his shop for a few hours a day.During that time they were digging a tunnel from the basement of the shop to a nearby bank.This kind of mystery cannot be solved from the start and readers can only suspect that the apprentice has anything to do with the mystery. This kind of plot could be called a Hidden-crime mystery. In conclusion I would say that Arthur Conan Doyle exploits many different kinds of traditional detecitve stories and gives them his own unique twist.He uses logic mixed with intricate plots and a sometimes a few red herrings, as in the Red Headed League.Some devoted readers prefer his earlier stories when Sherlock Holmes performed his observational miracles,however,one can only say that which ever you prefer Conan Doyles work is still read and admired today.

Investigation into transition metals as catalysts Essay Example for Free

Investigation into transition metals as catalysts Essay Hydrogen peroxide decomposes slowly to form water and oxygen gas. Transition metal oxides will catalyse this reaction. A catalyst speeds up a reaction without being used up. The best catalyst for a reaction increases the rate of reaction the most. The rate of reaction can be measured by the amount of product formed divided by the time of the reaction. If 40 ml of oxygen were produced in 30 seconds (0. 5min), then the rate of reaction would be 80 ml/min. Planning- the apparatus available will be: 20 volume hydrogen peroxide solution (irritant), copper dioxide (harmful), iron oxide, manganese dioxide (harmful), spatulas, ele4ctronic balance, measuring cylinder, trough (water bath), stop watch, thistle funnel, delivery tube, bungs to take funnel and tube, boiling tubes. Safety Precautions   Wear goggles.   Make sure that the hydrogen peroxide does not make contact with skin and/or hair.   Wipe bench thoroughly after experiment. Variables Each catalyst should be tested twice, however the catalyst should be altered after each experiment. Constants. Volume/concentration of hydrogen peroxide (10cm3 of 20 vol. hydrogen peroxide + 10cm3 of water).   Amount of each catalyst (1g).   Time left for/intervals at which gas is measured (every 5 seconds for 50 seconds).   Same general apparatus. NB. Wash apparatus after each experiment. Measurements The volume of gas (oxygen) produced will be measured during each test at 5-second intervals- this will be done by measuring how much water is displaced in the measuring cylinder by the gas. Each catalyst will be tested twice, and the test will last for 50 seconds on each occasion. Results Manganese. Time (secs) Experiment 1 (vol. of Oxygen cm3) Experiment 2 (vol. of Oxygen cm3) Average (vol. Of Oxygen cm3) Copper Time (secs) Experiment 1 (vol. of Oxygen cm3) Experiment 2 (vol. of Oxygen cm3) Average (vol. Of Oxygen cm3)   Iron Time (secs) Experiment 1 (vol. of Oxygen cm3). Experiment 2 (vol. Of Oxygen cm3) Average (vol.Average rate of reaction Average rate= volume/time=.. cm3/sec Manganese dioxide= 96/40= 2. 4 cm3/sec. Copper oxide= 27/50= 0. 54 cm3/sec. Iron dioxide= 27/50= 0. 54 cm3/sec. 20 vol. of hydrogen peroxide means that each cm3 gives off 20 cm3 of oxygen gas. We diluted it to 10 vol. Using water and so we would have expected 100 cm3 of oxygen. Hence manganese dioxide as well as being the best catalyst also caused more hydrogen peroxide to break down. Evaluation Although the results obtained were fairly good, there were quite a few problems during the experiment, which affected them. These were:   It was difficult to fill the measuring cylinder with water, as well as insert it into the trough (water bath) without any escaping and creating difficulties in measuring the gas produced.   The largest measuring cylinder was only 100 cm3. This was very relevant as one of the tests for manganese dioxide exceeded 100 cm3 in gas produced, therefore a larger cylinder was needed. The catalysts were very fine powders, which made it difficult to measure out exactly 1g.   When gas was being produced and coming off fast, it was difficult to read the measurements accurately as the surface of the water wasnt steady. (It was also difficult when a gas bubble came up while the gas volume was being measured). In act to improve the experiment and thus make the results more accurate, the following could have been done: A wider measuring cylinder used so that gas being produced rapidly would not disturb the water surface as much, making the volume of gas easier to measure. A larger measuring cylinder used so that gas volumes exceeding 100 cm3 could be measured and therefore the results not interrupted with.   Repeat testing (i. e. 3 tests for each catalyst) carried out so that there is less room for error whilst obtaining results. This would also make them more reliable. When the results were obtained, there were some noticeable abnormalities i. e. anomalous results. These were; the measurement of gas after 5 seconds when testing iron dioxide, and the tests when using manganese dioxide. This was because when manganese dioxide was being tested, there were large differences in measurements at each time interval, therefore experimental errors must have occurred (after 40 seconds on the first test, the gas volume also exceeded 100 cm3, whilst in the second test this did not happen until after the 50 second limit). The other anomalous result was when testing iron dioxide, as after the first 5 seconds, there was a large difference in the volume of gas between the 2 tests carried out (30 cm3 : 20 cm3). The cause of these anomalous results is most likely related to the surface area of the catalyst in correlation with each test carried out i. e. the powdered catalyst may have been slanted up the boiling tube during one test, but not on the other, resulting in different surface areas. Shaking the boiling tube before each test and/or using a wider testing tube, could have however prevented this. From the results obtained, you can also not definitely state the best catalyst for his reaction, as all 31 transition metals were not tested. Therefore to extend this investigation to find the best catalyst for producing oxygen gas from hydrogen peroxide solution, all the transition metals could have been tested as well as repeat tested for verification. This, in conclusion, would have found the best catalyst for this particular reaction.   Daniel Powell. 10k. Show preview only The above preview is unformatted text This student written piece of work is one of many that can be found in our GCSE Patterns of Behaviour section.