Reliability‚ Validity and Accuracy - what do they mean? (To be read in conjunction with an article originally published in Curriculum Support‚ Science‚ 2001 Vol. 6 No. 3) Reliability and validity are two terms that continue to cause problems for teachers and students. Students in Stage 4/5 are required to evaluate evidence for reliability and validity. In Stage 6 they are required to discuss and explain how they would improve the validity and reliability of a first-hand investigation. They could
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Examples: In the User Requirement document (Document No. xxx)‚ 1. The RTD shall be calibratable and its calibration range shall encompass the user’s process range. 2. The accuracy and precision of the RTD shall be acceptable for the user’s process requirements. 3. The RTD
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SPECIFICITY Compound Relative retention time Related sustances From individual solution From blend solution Varation H-GTBRC01 (0.15%) 0.65 0.65 0.00 H-GTBRC02 (0.15%) 0.80 0.80 0.00 H-GTBRC03 (0.15%) 0.43 0.43 0.00 Gefitinib (0.1%) 1.00 1.00 0.00 Observation: No interference was observed due to blank at the retention time of H-GTBRC01‚ H-GTBRC02‚ H-GTBRC03 . The order & relative retention time obtained from individual solution & blend solution were
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Satellite Visibility and Availability A Ganesh and R Narayanakumar The satellite visibility and availability is an essential parameter for precise positioning and surveying. Users of GPS must know where‚ when and what satellites should be tracked to attain the best results. The following are the essential measures a GPS operator is expected to know‚ during positioning. The elevation angle: - is the angle from the antenna between the horizontal and the line of sight to the satellite.
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Communications‚ Navigation‚ Surveillance/ Air Traffic Management (CNS/ATM) Conference 2010 Col Jimmie Schuman‚ Jr. Commander 853d Electronic Systems Group (853 ELSG) Mr. Michael Harrington Division Chief Global Air Traffic Management (853 ELSG/NT) 853 ELSG/NT Table of Contents What is CNS/ATM? CNS/ATM Services CNS/ATM Systems Communications Navigation Navigation Safety Surveillance CNS Capabilities‚ Airspace Applicability & Need Dates Appendix A – CNS/ATM Policy Appendix B - Acronyms
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computer technology. These automated machines can be used to perform homely domestic chores as well as conduct deadly leather wars. Using computer technology in military affairs is also on the rise. this method calls for accuracy ‚tremendous R&D and a high level of precision . Nuclear technology‚ creating cyborgs and wars that are fought in cyberspace are the effects of computer science in the history of our wars presently. Besides it becomes easy to fight a war in cyber space than in the
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________ The quartz thermometer is a high-precision‚ high accuracy temperature sensor. It measures temperature by measuring the frequency of a quartz crystal oscillator[->3]. The oscillator contains a specially cut crystal that results in a linear temperature coefficient of frequency‚ so the measurement of the temperature is essentially reduced to measurement of the oscillator frequency.The high linearity makes it possible to achieve high accuracy over an important temperature range that contains
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Test 1 Review Questions Chapter 2 59-61: 1-6‚ 8-9‚ 13-14‚ 17-19‚ 24-25a‚ 29-30‚ 35-42 63: 1-7‚ 12 Pg. 59-60 1. How does quantitative information differ from qualitative information? Quantitative is numerical and Qualitative is descriptive. 2. What is a hypothesis? An explanation that is based on prior scientific research or observations and that can be tested. 3. a. What is a model in the scientific sense? A pattern‚ plan‚ representation‚ or description designed to show the structure
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I will be explaining the benefits of the health information exchange to express the knowledge that I have learned throughout this course. I will briefly discuss the benefits‚ types of exchange‚ and data quality characteristics that utilized in today’s health system. Health information exchange is used in various health care settings. HIE provides the best benefits for our patients on time efficacy. The benefits are shared securely in the patient’s medical history. During the process of sharing data
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M and 0.0423 M through EDTA titration and AAS respectively. The percent errors for the values were 223% and 231% in that order. The extremely high error indicates either poor techniques or a contaminated unknown. Due to the reproducibility (high precision) of the results‚ one may assume that it was indeed a contaminated
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