Results 101 to 110 of about 706 (194)

融合粗糙集和信息熵的复合绝缘子污闪状态评估

Gaoya dianqi, 2019
为对恶劣天气频发环境下的在役复合绝缘子进行准确有效的污闪状态评估,针对复杂影响因素的随机性、不确定性和不完备性,提出融合粗糙集和信息熵的复合绝缘子污闪状态在线评估方法。通过构建多维度的绝缘子评价指标体系,在信息熵的观点下确定各条件属性的重要程度,结合粗糙集理论确定属性的相对权重,实现状态评估的定量表示。该方法完全基于数据驱动,能有效避免评估中的主观性问题,并且具有良好的扩展性和容错性。实例分析表明,该方法具有优异的区分度,能够快速可靠地反映复合绝缘子的实际污闪状态 ...
吴胜磊, 温颖, 宋超然, 梁睿
doaj  

The Impact of Data Elements on Narrowing the Urban-Rural Consumption Gap in China: Mechanisms and Policy Analysis

The urban-rural consumption gap, as one of the important indicators in social development, directly reflects the imbalance in urban and rural economic and social development.
Ma, Mingpu
core  

基于改进TOPSIS-RSR法的电能质量综合评价

Gaoya dianqi, 2018
为解决现有电能质量评价模型的复杂性以及分级评价时的随机性和模糊性,提出了基于改进TOPSIS-RSR法的电能质量综合评价方法。采用熵权法客观计算电能质量指标的权重,运用理想解法（technique fororder preference by similarity to an ideal solution,TOPSIS）对电能质量进行综合评价;提出相对贴近距离的概念,对传统理想解法中存在的某些情况不能比较评价目标优劣性的问题进行改进;用相对贴近距离结合秩和比（rank sum ratio,RSR）法 ...
邱玉婷, 李济沅, 邓旭, 邓国军, 周浩   +4 more
doaj  

[Attributable disease burden of low bone mineral density related fractures in people over 50 years old from 1990 to 2023 in China]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Lai Z, Wu Y, Jiang J, Shu X, Zeng Z, Chen W.   +5 more
europepmc   +1 more source

[Shape-aware cross-modal domain adaptive segmentation model]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Liu Y, Qi L, Diao Z, Feng G, Li Y, Jiang Z.   +5 more
europepmc   +1 more source

[Optimized extraction of active components of <i>Paeonia lactiflora</i> and their antioxidant, anti-inflammatory and pigmentation-reducing effects for skin whitening]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Xu Q, Li W, Zhang X, Chen Y, Jiang Z, Li G, Yan M.   +6 more
europepmc   +1 more source

[A coronary artery plaque segmentation method based on focal weighted accuracy loss function]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Xiong F, Lu H, Li L, Jiang R.
europepmc   +1 more source

[Adaptive lesion-aware fusion network for joint grading of multiple fundus diseases]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Zeng W, Guo S.
europepmc   +1 more source

[Diffusion cycle-consistent generative adversarial networks for pelvic active bone marrow segmentation]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Zhuo L, Zeng M, Tan S, Liang T, Xiao W, Zhen X.   +5 more
europepmc   +1 more source

[A GA-BP neural network model based on spectrum-effect relationship for assessing spectrum-effect score and quality evaluation of Cassia seeds extract]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Yan H, Wang H, Zou C.
europepmc   +1 more source