horizontally-mounted‚ axial‚ ammonia compressor in a nitric acid plant. The compressor has a shaft diameter of 100 mm and generates a thrust of 15kN when operating at 6‚000 rpm. The thrust is negligible at zero speed. a. What type of thrust bearing would you recommend and why? b. What are the physical reasons why a dry‚ PTFE bearing would be unacceptable? c. With the bearing type recommended in (a)‚ produce a detailed‚ professional design report for the bearing. The report should include
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Written Reflection on Reliability and Validity July 24‚ 2014 Written Reflection on Reliability and Validity Educational and psychological testing assessments are one of the most important roles therapists have. The correct use and understanding of tests can provide aid‚ benefit‚ and change the life of examinees. However‚ incorrect use of instrument tools and lack of knowledge pertaining to test development‚ interpretation and improper use of tools can also damage lives. As counselors‚ we must
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The purpose of this article is to summarize‚ integrate‚ and evaluate the many ways interviews can be structured. Reliability and validity are key concepts in the process of selecting among job applicants‚ since the main goal of selection is to make accurate predictions about which individuals will perform well on the job. Reliability is the consistency of measurement‚ or the degree to which an instrument measures the same way each time it is used under the same condition with the same subjects (definition
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Demonstrating Effective Leadership Case # 3 DEMONSTRATING EFFECTIVE LEADERSHIP Complimentary Soda’s for Bus Drivers DEMONSTRATING EFFECTIVE LEADERSHIP Introduction Bill Jefferson‚ the manager at the new outdoor Amphitheatre‚ would give the bus drivers complimentary food and drinks. Representative Sparks who was over the Parks and Tourism Committee in the state legislature found a blog in which one bus driver said “they very nicely give
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Introduction Wrong or inaccurate measurements can lead to wrong decisions‚ which can have serious consequences‚ costing money and even lives. The human and financial consequences of wrong decisions based on poor measurement being taken in matters as important as environmental change and pollution are almost incalculable. It is important therefore to have reliable and accurate measurements which are agreed and accepted by the relevant authorities worldwide. Metrologists are therefore continuously
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Reliability and validity are essential in terms of observation and measurement as it relates to human services research. In order to ensure this particular research has legitimacy it is vital that testing and research is consistent and specific. This paper will define and describe the types of reliability and validity and provide examples of each as it relates to human services research. It will also provide examples of how data collection methods and instruments are used in relation to human services
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Exploring Reliability and Validity Researchers have constructed instruments in attempt to empirically measure values and culture belief systems of people and societies. In order for one to measure what some may consider subjective meanings; concrete definitions were given to the types of values that were examined in the “Values and Motives Questionnaire” (Values and Motives Questionnaire‚ n.d.‚ p.1). The values examined were categorized as interpersonal‚ extrinsic‚ and intrinsic values (Values and
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Demonstrating a Good Life There are various incidents in the story of Gilgamesh that demonstrates the way to live a good life. Throughout the years that in many different things to enlighten your life. For instance‚ "Don’t go where money is go where your heart is‚" Remove negative thoughts‚ and charity begins at home. The Epic of Gilgamesh was always considered to be the greatest work of ancient Mesopotamia and the earliest of the world literature. The main character Gilgamesh went through many
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Theory The first experiment focused on the concept of errors and uncertainties that are obtained during measurements. For an experiment to be successful‚ especially those that involve measurements‚ the number of significant figures must be known. Significant figures are the digits required to express a measured quantity and thus reflect the accuracy of the measurement. Uncertainty is defined as the smallest increment that can be measured and is defined by the instrument used. An error is defined
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problems is a stable characteristic‚ as it is largely genetically determined (Nairne‚ 2009). Test-retest is typically appropriate for measures with stable attributes‚ but this test’s novel nature makes it an inappropriate technique in regard to reliability. In effect‚ its novelty diminishes after the initial testing‚ producing difficulties due to practice effects‚ reactivity‚ or both. Since it has just 20 questions‚ furthermore‚ it is easier for examinees to remember a significant portion of its items
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