Modeling failures of intermittently used machines (Final Repor)

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[唯一标识符]:CDSITC.AEROSPACE.N88-22367
[文献来源]:美国航空航天数据库(aerospace)
[资源原始索取号]:N1988-22367; Reference AN: N88-22367
[标题]:Modeling failures of intermittently used machines (Final Repor)
[作者]:FOLLMANN DEAN A
[文摘]:This research memorandum presents methodology for analyzing failures of machines that are repeatedly turned on and off. Because a machine can fail both when it is on and off, different parametric models for failure are used for each of these periods. An important issue addressed for such machines is how the intermittent use itself affects failure. Because the models can predict the chance of failure under different usage patterns, less harmful usage patterns can be recommended. As an example, the models are applied to a radar system, and both the immediate and cumulative effects of on-off cycling are demonstrated. (GRA)
[关键词]:FAILURE ANALYSIS; PARAMETERIZATION ; REGRESSION ANALYSIS; SYSTEM FAILURES; WEIBULL DENSITY FUNCTIONS; MATHEMATICAL MODELS; RADAR EQUIPMENT; SWITCHING CIRCUITS; TIME
[出版年份]:1987
[专业领域]:QUALITY ASSURANCE AND RELIABILITY
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[文献类型]:科技报告
[标题]:Food Habits of Some Commercially Important Groundfish off the Coasts of California, Oregon, Washington, and British Columbia.
[作者]:T. W. Buckley; G. E. Tyler; D. M. Smith; P. A. Livingston;
[机构]:National Marine Fisheries Service, Seattle, WA. Alaska Fisheries Science Center.**Washington Univ., Seattle. School of Fisheries.
[关键词]:food habits,marine fishes,pacific ocean, sampling, diets, latitude, depth, season,ground fish, pacific hake, thronyhead, sole, grandier
[出版年份]:1999
[报告号]:NOAA-TM-NMFS-AFSC-102
[报告时间]:Aug 1999,
[页码]:190p
[馆藏索取号]:PB99166563
[总页数]:0


[唯一标识符]:CDSTIC.ISTP.422081
[文献来源]:科学技术会议录索引(ISTP)
[文献类型]:科技会议
[标题]:EFFECTS OF N, P AND K NUTRITION ON GROWTH, YIELD AND NUTRIENT-UPTAKE OF MASHUA PLANTS GROWN IN SAND
[作者]:A RODRIGUEZDELFIN;D GOMEZ;E FERNANDEZ;M CHANG
[出版单位]:INTERNATIONAL SOCIETY HORTICULTURAL SCIENCELEUVEN
[ISSN_ISBN]:90-6605-854-4
[会议名称]:World Congress on Soilless Culture,MAALE HACHAMISHA, ISRAEL,May 14-18, 2000
[来源]:PROCEEDINGS OF THE WORLD CONGRESS ON SOILLESS CULTURE: AGRICULTURE IN THE COMING MILLENIUM,pp 131-137
[系列名称]:ACTA HORTICULTURAE
[编辑者]:EA BarTal;Z Plaut
[主办单位]:ISHS Commiss Plant Substrates;ISOSC, Working Grp Soilless Culture
[地址]:A RODRIGUEZDELFIN,UNIV_NACL_AGRARIA_MOLINA, CTR INVEST HIDROPONIA & NUTR MINERAL, DEPT BIOL, AV UNIV S-N, LIMA 12, PERU
[专业领域]:AGRICULTURE, MULTIDISCIPLINARY,HORTICULTURE