A new method in making judgment matrix is proposed based on a basic value of “importance” and a relative measure level of “importance”. Factors affecting petroleum exploration are analyzed and Experts’ judgment m...A new method in making judgment matrix is proposed based on a basic value of “importance” and a relative measure level of “importance”. Factors affecting petroleum exploration are analyzed and Experts’ judgment matrix on a geologic formation is given. Expected value of each factor is computed and the volume of recoverable oil is estimated.展开更多
The basic standpoint of the substantive interpretation of the criminal law is to explore the ontological basis of the theories of the criminal law interpretation and the basic routes of the substantive interpretation ...The basic standpoint of the substantive interpretation of the criminal law is to explore the ontological basis of the theories of the criminal law interpretation and the basic routes of the substantive interpretation of the criminal law from the perspective of practice. As far as the practicality of the substantive interpretation of the criminal law is concerned, it emphasizes the connection of the theories and the basic routes,and the practicality comes from the philosophical dimension of the criminal law,which interprets problems from a higher level.展开更多
由于半透明光伏窗中的太阳能电池对太阳辐射光谱有选择作用,光伏窗建筑的能耗和室内光热环境与普通白玻建筑均有差异。在建筑物应用光伏窗时,需有特定的热工参数设计值进行参考,但目前缺少相关依据。因此,文章以太原某办公建筑为例,建...由于半透明光伏窗中的太阳能电池对太阳辐射光谱有选择作用,光伏窗建筑的能耗和室内光热环境与普通白玻建筑均有差异。在建筑物应用光伏窗时,需有特定的热工参数设计值进行参考,但目前缺少相关依据。因此,文章以太原某办公建筑为例,建立基准建筑和设计建筑模型,探究传热系数(Heat Transfer Coefficient, U-value)和太阳得热系数(Solar Heat Gain Coefficient, SHGC)对光伏窗建筑能耗的影响,并采用权衡判断法得出光伏窗U值和SHGC值的推荐范围。结果表明:在太原地区应用光伏窗时,较小的U值和较大的SHGC值更有利于建筑节能;当光伏窗建筑窗墙比大于0.60、透过率等于0.46时,U值的最大限值是现有节能标准限值的1.9倍;通过对比不同窗墙比时SHGC值的推荐范围,发现随着窗墙比的增大,SHGC下限值减小了25%。研究结果对于光伏窗建筑热工设计与优化具有一定的指导意义与参考价值。展开更多
针对变转速、变负载条件下的电机故障诊断问题,提出了一种基于自相关矩阵奇异值分解(Singular Value Decomposition,SVD)的特征提取和迁移学习分类器相结合的诊断方法。对于Hankel矩阵提取的奇异值向量,设计了平均曲率区分度指标来描述...针对变转速、变负载条件下的电机故障诊断问题,提出了一种基于自相关矩阵奇异值分解(Singular Value Decomposition,SVD)的特征提取和迁移学习分类器相结合的诊断方法。对于Hankel矩阵提取的奇异值向量,设计了平均曲率区分度指标来描述特征差异性,迁移学习TrAdaBoost算法通过迭代过程中调节辅助振动数据的权重来帮助目标数据学习,提升了分类正确率,同时利用向量夹角余弦进行可迁移度检测从而避免负迁移。试验结果表明,SVD无需利用故障先验知识,具有通用性,且迁移学习相比传统机器学习在目标振动数据较少条件下性能得到显著提升。展开更多
文摘A new method in making judgment matrix is proposed based on a basic value of “importance” and a relative measure level of “importance”. Factors affecting petroleum exploration are analyzed and Experts’ judgment matrix on a geologic formation is given. Expected value of each factor is computed and the volume of recoverable oil is estimated.
文摘The basic standpoint of the substantive interpretation of the criminal law is to explore the ontological basis of the theories of the criminal law interpretation and the basic routes of the substantive interpretation of the criminal law from the perspective of practice. As far as the practicality of the substantive interpretation of the criminal law is concerned, it emphasizes the connection of the theories and the basic routes,and the practicality comes from the philosophical dimension of the criminal law,which interprets problems from a higher level.
文摘由于半透明光伏窗中的太阳能电池对太阳辐射光谱有选择作用,光伏窗建筑的能耗和室内光热环境与普通白玻建筑均有差异。在建筑物应用光伏窗时,需有特定的热工参数设计值进行参考,但目前缺少相关依据。因此,文章以太原某办公建筑为例,建立基准建筑和设计建筑模型,探究传热系数(Heat Transfer Coefficient, U-value)和太阳得热系数(Solar Heat Gain Coefficient, SHGC)对光伏窗建筑能耗的影响,并采用权衡判断法得出光伏窗U值和SHGC值的推荐范围。结果表明:在太原地区应用光伏窗时,较小的U值和较大的SHGC值更有利于建筑节能;当光伏窗建筑窗墙比大于0.60、透过率等于0.46时,U值的最大限值是现有节能标准限值的1.9倍;通过对比不同窗墙比时SHGC值的推荐范围,发现随着窗墙比的增大,SHGC下限值减小了25%。研究结果对于光伏窗建筑热工设计与优化具有一定的指导意义与参考价值。
文摘针对变转速、变负载条件下的电机故障诊断问题,提出了一种基于自相关矩阵奇异值分解(Singular Value Decomposition,SVD)的特征提取和迁移学习分类器相结合的诊断方法。对于Hankel矩阵提取的奇异值向量,设计了平均曲率区分度指标来描述特征差异性,迁移学习TrAdaBoost算法通过迭代过程中调节辅助振动数据的权重来帮助目标数据学习,提升了分类正确率,同时利用向量夹角余弦进行可迁移度检测从而避免负迁移。试验结果表明,SVD无需利用故障先验知识,具有通用性,且迁移学习相比传统机器学习在目标振动数据较少条件下性能得到显著提升。
