目的检验个体和社会功能量表(personal and social performance scale,PSP)的信度和效度,建立中国精神分裂症患者PSP常模。方法在全国6个精神卫生中心中收集符合DSM-Ⅳ诊断标准的300例精神分裂症患者,其中,住院患者90例,门诊患者210例...目的检验个体和社会功能量表(personal and social performance scale,PSP)的信度和效度,建立中国精神分裂症患者PSP常模。方法在全国6个精神卫生中心中收集符合DSM-Ⅳ诊断标准的300例精神分裂症患者,其中,住院患者90例,门诊患者210例。对所有患者进行阳性和阴性症状量表(positive and negative syndrome scale,PANSS)、大体社会功能量表(global assessment of functioning scale,GAF)、临床总体印象严重程度量表(clinical globalimpression-severity scale,CGI-S)以及PSP评估,分析PSP的内部一致性、PSP与GAF的一致性及其与PANSS、CGI-S等量表的相关性。18例精神分裂症住院患者以及34例精神分裂症门诊及30例住院患者由两名评定者同时做PSP评估并独立完成评分,用以PSP研究者一致性的检验;另外,41例精神分裂症门诊患者及30例住院患者在首次评定后的一周进行再次评定,用以PSP重测一致性的检验。结果 PSP的内部一致性Cronbachα系数为0.814;PSP总分研究者之间的一致性较好(ICC=0.935);PSP重测一致性较好(ICC=0.890);PSP总分与GAF评分呈显著正相关(r=0.91,P<0.01),与PANSS总分呈显著负相关(r=-0.62,P<0.01)。结论 PSP是一个操作简单、稳定性高的评估工具,与住院患者相比PSP用于精神分裂症门诊患者的性能更好,量表中d维度(冲动和攻击行为)占整个量表的权重较大,适合病情严重者(精神分裂症住院患者中d维度与总分相关性好)。展开更多
In order to present a new method for analyzing the reliability of a two-link flexible robot manipulator,Lagrange dynamics differential equations of the two-link flexible robot manipulator were established by using the...In order to present a new method for analyzing the reliability of a two-link flexible robot manipulator,Lagrange dynamics differential equations of the two-link flexible robot manipulator were established by using the integrated modal method and the multi-body system dynamics method.By using the Monte Carlo method,the random sample values of the dynamic parameters were obtained and Lagrange dynamics differential equations were solved for each random sample value which revealed their displacement,speed and acceleration.On this basis,dynamic stresses and deformations were obtained.By taking the maximum values of the stresses and the deformations as output responses and the random sample values of dynamic parameters as input quantities,extremum response surface functions were established.A number of random samples were then obtained by using the Monte Carlo method and then the reliability was analyzed by using the extremum response surface method.The results show that the extremum response surface method is an efficient and fast reliability analysis method with high-accuracy for the two-link flexible robot manipulator.展开更多
动量轮是卫星姿态控制系统的关键部件,对卫星的可靠性及整体寿命有直接影响。针对卫星动量轮的剩余寿命预测问题,提出一种基于Copula函数的多退化量下的寿命预测方法。首先,分析了影响动量轮寿命的关键因素,选择润滑剂剩余量和电流作为...动量轮是卫星姿态控制系统的关键部件,对卫星的可靠性及整体寿命有直接影响。针对卫星动量轮的剩余寿命预测问题,提出一种基于Copula函数的多退化量下的寿命预测方法。首先,分析了影响动量轮寿命的关键因素,选择润滑剂剩余量和电流作为退化量;其次,分别对单个退化量进行退化建模,得到动量轮剩余寿命的边缘分布函数;然后,通过Copula函数族来描述多退化量之间的相关性,并对边缘分布进行融合,得到动量轮剩余寿命的联合分布函数;最后,提出基于赤池信息准则(Akaike information criterion,AIC)模型评价的Copula函数选择方法。展开更多
文摘目的检验个体和社会功能量表(personal and social performance scale,PSP)的信度和效度,建立中国精神分裂症患者PSP常模。方法在全国6个精神卫生中心中收集符合DSM-Ⅳ诊断标准的300例精神分裂症患者,其中,住院患者90例,门诊患者210例。对所有患者进行阳性和阴性症状量表(positive and negative syndrome scale,PANSS)、大体社会功能量表(global assessment of functioning scale,GAF)、临床总体印象严重程度量表(clinical globalimpression-severity scale,CGI-S)以及PSP评估,分析PSP的内部一致性、PSP与GAF的一致性及其与PANSS、CGI-S等量表的相关性。18例精神分裂症住院患者以及34例精神分裂症门诊及30例住院患者由两名评定者同时做PSP评估并独立完成评分,用以PSP研究者一致性的检验;另外,41例精神分裂症门诊患者及30例住院患者在首次评定后的一周进行再次评定,用以PSP重测一致性的检验。结果 PSP的内部一致性Cronbachα系数为0.814;PSP总分研究者之间的一致性较好(ICC=0.935);PSP重测一致性较好(ICC=0.890);PSP总分与GAF评分呈显著正相关(r=0.91,P<0.01),与PANSS总分呈显著负相关(r=-0.62,P<0.01)。结论 PSP是一个操作简单、稳定性高的评估工具,与住院患者相比PSP用于精神分裂症门诊患者的性能更好,量表中d维度(冲动和攻击行为)占整个量表的权重较大,适合病情严重者(精神分裂症住院患者中d维度与总分相关性好)。
基金Project(2006AA04Z405) supported by the National High Technology Research and Development Program of ChinaProject(3102019) supported by Beijing Municipal Natural Science Foundation,China
文摘In order to present a new method for analyzing the reliability of a two-link flexible robot manipulator,Lagrange dynamics differential equations of the two-link flexible robot manipulator were established by using the integrated modal method and the multi-body system dynamics method.By using the Monte Carlo method,the random sample values of the dynamic parameters were obtained and Lagrange dynamics differential equations were solved for each random sample value which revealed their displacement,speed and acceleration.On this basis,dynamic stresses and deformations were obtained.By taking the maximum values of the stresses and the deformations as output responses and the random sample values of dynamic parameters as input quantities,extremum response surface functions were established.A number of random samples were then obtained by using the Monte Carlo method and then the reliability was analyzed by using the extremum response surface method.The results show that the extremum response surface method is an efficient and fast reliability analysis method with high-accuracy for the two-link flexible robot manipulator.
文摘动量轮是卫星姿态控制系统的关键部件,对卫星的可靠性及整体寿命有直接影响。针对卫星动量轮的剩余寿命预测问题,提出一种基于Copula函数的多退化量下的寿命预测方法。首先,分析了影响动量轮寿命的关键因素,选择润滑剂剩余量和电流作为退化量;其次,分别对单个退化量进行退化建模,得到动量轮剩余寿命的边缘分布函数;然后,通过Copula函数族来描述多退化量之间的相关性,并对边缘分布进行融合,得到动量轮剩余寿命的联合分布函数;最后,提出基于赤池信息准则(Akaike information criterion,AIC)模型评价的Copula函数选择方法。
