From 1540 inelastic interactions of 3. 7A GeV 160 projectile with emulsion nuclei, we select samples of 87 and 61 events carefully due to interactions of neutron （n） and singly charged particles （Z = 1）, respectiv...From 1540 inelastic interactions of 3. 7A GeV 160 projectile with emulsion nuclei, we select samples of 87 and 61 events carefully due to interactions of neutron （n） and singly charged particles （Z = 1）, respectively. New results concerning the topology of such events are investigated. The average multiplicities of secondary relativistic particles that appear as shower tracks for n and Z = 1 stay more or less constant when compared with analogous data on p-Em at similar energy. The multiplicity distributions and the average values of the various secondary charged particles are studied and compared with the corresponding predictions by the cascade evaporation model. The results assume that the n or Z = 1 from 16O collide peripherally with an emulsion target and are considered as an expansion to the N-N collisions.展开更多
软件测试中收集的累积出错数据,往往是不完全的,使用它们对软件的可靠性进行分析,将影响到分析结果的精度.解决这一问题的途径有很多,本文试图应用 EM 算法于 NHPP(非齐次泊松过程)类模型的参数估计,以提高估计精度,从而提高软件可靠性...软件测试中收集的累积出错数据,往往是不完全的,使用它们对软件的可靠性进行分析,将影响到分析结果的精度.解决这一问题的途径有很多,本文试图应用 EM 算法于 NHPP(非齐次泊松过程)类模型的参数估计,以提高估计精度,从而提高软件可靠性分析的精确程度.展开更多
目的探讨综合护理干预对内生场深部热疗配合胸腹腔灌注化疗治疗恶性胸腹水患者生活质量的影响。方法选取2015年11月-2016年5月接受治疗的恶性胸腹水患者92例,采用随机数字表法将其分为对照组和研究组各46例。对照组给予常规护理,研究组...目的探讨综合护理干预对内生场深部热疗配合胸腹腔灌注化疗治疗恶性胸腹水患者生活质量的影响。方法选取2015年11月-2016年5月接受治疗的恶性胸腹水患者92例,采用随机数字表法将其分为对照组和研究组各46例。对照组给予常规护理,研究组在对照组基础上给予综合护理干预。采用焦虑自评量表(self-rating anxiety scale,SAS)和生活质量量表(quality of life questionnaire-core 30,QLQ-C30)评估2组患者的焦虑状态和生活质量。并比较2组患者对护理工作的满意度。结果干预后研究组的SAS评分和QLQ-C30各项评分均低于对照组,护理满意率高于对照组(χ2=5.373,P=0.021)。结论综合护理干预可有效减轻内生场深部热疗配合胸腹腔灌注化疗治疗的恶性胸腹水患者的焦虑情绪,改善患者的生活质量,并可提高患者对护理工作的满意度。展开更多
特征提取和健康状态的辨识是复杂系统健康状态评估中的关键问题。提出一种新的健康状态评估方法,该方法分为3个步骤:首先,采用经验模态分解(empirical model decomposition,EMD)和奇异值分解(singular value decomposition,SVD)来提取...特征提取和健康状态的辨识是复杂系统健康状态评估中的关键问题。提出一种新的健康状态评估方法,该方法分为3个步骤:首先,采用经验模态分解(empirical model decomposition,EMD)和奇异值分解(singular value decomposition,SVD)来提取振动信号的特征变量。然后,运用马田系统(Mahalanobis-Taguchi system,MTS)构造马氏空间,并对其进行优化,从而降低特征变量的维度。最后,提出了一种健康度(health index,HI)的概念,并且用来对复杂系统健康问题进行评估。该方法成功地应用在轴承的健康状态评估中。展开更多
文摘From 1540 inelastic interactions of 3. 7A GeV 160 projectile with emulsion nuclei, we select samples of 87 and 61 events carefully due to interactions of neutron （n） and singly charged particles （Z = 1）, respectively. New results concerning the topology of such events are investigated. The average multiplicities of secondary relativistic particles that appear as shower tracks for n and Z = 1 stay more or less constant when compared with analogous data on p-Em at similar energy. The multiplicity distributions and the average values of the various secondary charged particles are studied and compared with the corresponding predictions by the cascade evaporation model. The results assume that the n or Z = 1 from 16O collide peripherally with an emulsion target and are considered as an expansion to the N-N collisions.
文摘目的探讨综合护理干预对内生场深部热疗配合胸腹腔灌注化疗治疗恶性胸腹水患者生活质量的影响。方法选取2015年11月-2016年5月接受治疗的恶性胸腹水患者92例,采用随机数字表法将其分为对照组和研究组各46例。对照组给予常规护理,研究组在对照组基础上给予综合护理干预。采用焦虑自评量表(self-rating anxiety scale,SAS)和生活质量量表(quality of life questionnaire-core 30,QLQ-C30)评估2组患者的焦虑状态和生活质量。并比较2组患者对护理工作的满意度。结果干预后研究组的SAS评分和QLQ-C30各项评分均低于对照组,护理满意率高于对照组(χ2=5.373,P=0.021)。结论综合护理干预可有效减轻内生场深部热疗配合胸腹腔灌注化疗治疗的恶性胸腹水患者的焦虑情绪,改善患者的生活质量,并可提高患者对护理工作的满意度。
文摘特征提取和健康状态的辨识是复杂系统健康状态评估中的关键问题。提出一种新的健康状态评估方法,该方法分为3个步骤:首先,采用经验模态分解(empirical model decomposition,EMD)和奇异值分解(singular value decomposition,SVD)来提取振动信号的特征变量。然后,运用马田系统(Mahalanobis-Taguchi system,MTS)构造马氏空间,并对其进行优化,从而降低特征变量的维度。最后,提出了一种健康度(health index,HI)的概念,并且用来对复杂系统健康问题进行评估。该方法成功地应用在轴承的健康状态评估中。
