Reliability Issues – Centrifugal Slurry Pumps Introduction Pumps were probably the first machine ever developed‚ and are now the second most common machine in use around the world‚ out-numbered only by the electric motor. The very earliest type of pump is now known as a water wheel‚ Persian wheel or “noria”‚ consisting of a wheel of buckets that rotates to pick up water from a stream and dump it into a trough. Another early pump was the “Archimedean screw”‚ similar to the modern screw conveyor
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Discuss the validity‚ reliability and physiological foundations of a test versus a predictive maximal oxygen uptake test. Abstract The aim of this study was to assess the validity‚ reliability and physiological underpinnings of an actual VO2max test in comparison to a predictive maximal oxygen uptake test. Eight male subjects with the following physical characteristics‚ mean and standard deviation age 19.75 ± 0.71 year; weight 72.15 ± 11.93 kg; height 1.77 ± 0.11 m performed an incremental treadmill
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changed in employee selections. First‚ the development of meta-analysis‚ arguably one of the most influential methodological developments in recent decades‚ made it possible to cumulate quantitatively the results of large numbers of small-scale studies‚ resulting in a quasi-massive-scale study. Second‚ the results of large-scale studies of military personnel and others also became available. The results of both kinds of studies provided strong evidence of remarkably general validity for cognitive ability
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Recruitment and selection of a sales and marketing manager ABC biscuit company is a very profitable company which has achieved a remarkable growth during the last two years. They had 55 local customers and 5 foreign customers. One of their objectives were to increase their sales turnover in 20%.in order to do this they were focusing to expand their international customer base. This company has 60 employees and mr.de Silva the finance manager is handling all recruitments. Most of the employees whom
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SPINE Volume 26‚ Number 10‚ pp 1167–1171 ©2001‚ Lippincott Williams & Wilkins‚ Inc. Reliability and Validity of the Active Straight Leg Raise Test in Posterior Pelvic Pain Since Pregnancy Jan M. A. Mens‚ MD‚*† Andry Vleeming‚ PhD‚* Chris J. Snijders‚ PhD‚‡ Bart W. Koes‚ PhD‚§ and Henk J. Stam‚ MD‚ PhD† Pregnancy is frequently complicated by the occurrence of lumbopelvic pain; the reported cumulative 9-month incidence ranges from 48%-56%.2‚4‚8‚12 Posterior pelvic pain since pregnancy (PPPP) is
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In this case discussing both projective and self-report personality tests in terms of their reliability and validity in a social context. These tests are extremely useful in multiple ways such as calculating future behaviour and recognizing future behaviours according to Plotnik (2002). There are so many personality tests available for use but this essay
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how they perceive information‚ how they learn‚ remember and think. The way that an individual functions cognitively directly impacts the eyewitness statement that they give‚ as we all perceive and recall information differently. By questioning the validity of eyewitness testimonies‚ ultimately we are questioning in what way the function of our memory dictates how much‚ and what aspects of what we see are remembered. Within today’s judicial system there are many aspects involved when convicting
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Test Validity 1 Introduction Validity is arguably the most important criteria for the quality of a test. The term validity refers to whether or not the test measures what it claims to measure. On a test with high validity the items will be closely linked to the test’s intended focus. For many certification and licensure tests this means that the items will be highly related to a specific job or occupation. If a test has poor validity then it does not measure the job-related content and competencies
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Internal validity - means that the conclusion which comes from an experiment is valid for the respondents who participated in the experiment. For any experimental design‚ we always require interval validity‚ without which experimental results are not interpretable. Threats to Internal Validity Selection - Subjects bring with them into the investigation unique characteristics‚ some learned and some inherent. Examples include sex‚ height‚ weight‚ color‚ attitude‚ personality‚ motor
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A PRESENTATION ON PERSONNEL SELECTION PSY 409(SEMINAR IN RESEARCH INDUSTRIAL AND ORGANISATION PSYCHOLOGY) Personnel selection Definition Personnel selection is defined as the process used to hire (or‚ less commonly‚ promote) individuals. The term can apply to all aspects of the process‚ recruitment‚ selection‚ hiring‚ acculturation etc. The most common meaning focuses on the selection of workers. In this respect‚ selected prospects are separated from rejected applicants with the intention
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