共查询到19条相似文献,搜索用时 62 毫秒
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The function of the engineering profession is to manipulate materials, energy, and information, thereby creating benefit for humankind. To do this successfully, engineers must have a knowledge of nature that goes beyond mere theory—knowledge that is traditionally gained in educational laboratories. Over the years, however, the nature of these laboratories has changed. This paper describes the history of some of these changes and explores in some depth a few of the major factors influencing laboratories today. In particular, the paper considers the lack of coherent learning objectives for laboratories and how this lack has limited the effectiveness of laboratories and hampered meaningful research in the area. A list of fundamental objectives is presented along with suggestions for possible future research. 相似文献
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采用稳健统计技术对全国59家实验室橡胶密度能力验证结果进行统计分析,结果显示满意的为55家,结果可疑或离群的为4家。并对结果出现可疑或离群的原因进行了分析。 相似文献
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Douglas B. Thomas Edward F. Zalewski 《Journal of research of the National Institute of Standards and Technology》1990,95(5):533-543
A total of fifteen laboratories participated in the CIE detector response intercomparison which was designed to assess the level of agreement among participating laboratories in the absolute measurement (with respect to SI) of photodetector response in the visible spectral region. Most participants were either commercial laboratories or university laboratories with the National Institute of Standards and Technology (NIST) serving as the host laboratory. Each laboratory determined the absolute response of each of two silicon photodiode radiometers which were designed for the intercomparison by NIST. Approximately two-thirds of the laboratories reported response values which agreed with the NIST values to within ±1.0% at the two wavelengths of 488 and 633 nm.3 相似文献
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Increasingly mechanical engineering departments are beginning to incorporate remotely operated laboratories into their laboratory curriculums. Yet very few studies exist detailing the extent to which this new medium for laboratory delivery fulfills the educational goals of traditional in‐person laboratories. This paper describes a comparison of educational outcomes between in‐person and remotely operated laboratories in the mechanical engineering curriculum. The study carried out in the 2001 Fall semester was performed using a remotely operated and an in‐person jet thrust laboratory. The laboratories illustrate the fundamentals of compressible fluid mechanics as part of an undergraduate mechanical engineering curriculum. The results from this study indicated no significant difference in the educational outcomes between students who performed the in‐person or the remote experiment. 相似文献
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"入世"给我国理化检验实验室带来的机遇和挑战 总被引:1,自引:0,他引:1
王滨 《理化检验(物理分册)》2000,36(12):565-566
介绍中国理化检验实验室的现状,讨论“入世”后理化检验实验室面临的机遇和挑战。 相似文献
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Paul J. Atkins Nancy Nyan-Ru Chen William Gorman Ronald W. Hawkinson Soo-Il Kim Nicholas C. Miller Gregory Rullo 《Drug development and industrial pharmacy》1993,19(6):713-727
A test method is described for the quantitative determination of total extractable material from elastomeric aerosol seals, and for the reproducible production of a sample of the extractable material. The method was applied by six different laboratories to rubber samples similar to those found in aerosol valves, using solvent systems which may be found in typical inhalation aerosol products. The reproducibility within laboratories was found to be excellent, and in general the agreement between laboratories was good, but close adherence to the protocol was required. 相似文献
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W. J. Youden 《技术计量学》2013,55(4):409-417
Interlaboratory and round robin test programs can provide information, not only on a test procedure under investigation, but on the participating laboratories as well. A simple graphical technique is proposed to aid in the comparisons between laboratories. 相似文献
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K. I. Nazarov 《Measurement Techniques》1960,3(11):971-973
Summary The above highly-stable transistorized oscillator can be widely used in radio measuring laboratories, and especially in mobile laboratories, for testing equipment in situ. It can be assembled in other ways involving a smaller size and weight. 相似文献