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Bayesian and Multiple Bayesian Analysis of the Reliability Performances for Series System with Cold Standby Units 被引量:2
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作者 许勇 康会光 师义民 《Chinese Quarterly Journal of Mathematics》 CSCD 2002年第2期26-30,共5页
By using Bayesian and multiple Bayesian method, the failure probability, reliability and mean time to failure(MTTF) of series system with cold standby units are estimated. At last, we compare the two estimators by mea... By using Bayesian and multiple Bayesian method, the failure probability, reliability and mean time to failure(MTTF) of series system with cold standby units are estimated. At last, we compare the two estimators by means of Monte_Carlo simulation. 展开更多
关键词 ESTIMATION multiple Bayes reliability performance series system cold standby
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HIERARCHIC GREY QUASI-PREFERRED ANALYSIS MODEL AND ITS APPLICATION
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作者 李炳军 刘思峰 任盈盈 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2005年第1期78-83,共6页
The grey quasi-preferred analysis (GQPA) is one of important methods for realizing system analysis to conquer the limitations of the existing GQPA model, without any considerations to the difference of the different b... The grey quasi-preferred analysis (GQPA) is one of important methods for realizing system analysis to conquer the limitations of the existing GQPA model, without any considerations to the difference of the different behavioral factor′s importance. It could not be used to analyze the complex system with multi-hierarchy correlation factors, the weighted synthetic method for calculating abstract incidence degrees between the system beha-vioral characteristics and correlative factors in different hierarchies is given out,and the hierarchic grey quasi-preferred analysis (HGQPA) model is established. The effectiveness of the HGQPA model is tested by the scientific-technical system of Jiangsu Province. The depth and the range of the application of GQPA are developed, and the HGQPA model is regarded as a new approach to systemically analyze the complex systems with multi-hierarchy correlation factors. 展开更多
关键词 multi-hierarchy quasi-preferred analysis MODEL grey system
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THE "STRUCTURE-STRATIGRAPHY ANALYSIS" METHOD APPLIED IN THE PREDICTION OF SMALLER-SCALED STRUCTURE IN UNDERGROUND MINING
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作者 李增学 魏久传 李守春 《Journal of Coal Science & Engineering(China)》 1996年第1期61-66,共6页
Structure-stratigraphy analysis" is a new method used in the study and prediction of and small-scaled structures in coal mines. The object of this method is coalbed structure that includes the folds and fracture ... Structure-stratigraphy analysis" is a new method used in the study and prediction of and small-scaled structures in coal mines. The object of this method is coalbed structure that includes the folds and fracture occurred in the vicinity of coal-seams. It emphases the analysis on the relationship between structural deformation and stratal lithologic combination.Based on the statistics of a series of related parameters in stratigraphy and structure,comprehensive analysis and drawing, this method may provide a good means for the quantitative evaluation and prediction of small scale structure in coal mines. 展开更多
关键词 structure-stratigraphy analysis small-scaled structure structural prediction
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情感的流动:教师热情对青少年阅读乐趣的影响机制研究——基于PISA(2018)数据的多层次模型探析
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作者 汪茹 《教师教育研究》 CSSCI 北大核心 2024年第3期60-67,共8页
在综合前人研究的基础上,探讨了教师热情对学生阅读乐趣的影响机制,并应用多层次分析的方法重点考察了学校层次因素的调节作用。通过分析PISA 2018数据,发现个体感知的教师学科热情、教学热情与学生阅读乐趣之间存在显著正向关系,异质... 在综合前人研究的基础上,探讨了教师热情对学生阅读乐趣的影响机制,并应用多层次分析的方法重点考察了学校层次因素的调节作用。通过分析PISA 2018数据,发现个体感知的教师学科热情、教学热情与学生阅读乐趣之间存在显著正向关系,异质性分析结果显示此影响效应对于弱势学生群体来说更为凸显,教师支持在教师热情与阅读乐趣间发挥着部分中介作用。而在学校层次,教师学科热情氛围对学生阅读乐趣产生显著正向影响,且进一步分析揭示了学校层次的氛围变量存在着跨层的正向调节效应。为此,培养学生的阅读乐趣需提高教师的学科与教学热情,培育和维护一个充满热情的教师教科研环境,多途径发展教师提供学习支持的能力。 展开更多
关键词 教师热情 情绪濡染 学习情绪 多层析分析
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