Results 1 to 10 of about 1,590 (65)
全球能源互联网, 2022 在全球努力实现碳中和目标的背景下，以气候资金为核心的气候援助日益重要。发达国家试图以气候援助作为扩展对外影响的政策工具，寻求碳中和时代的全球权势地位，为本国低碳产业开拓海外市场。近年来，发达国家的气候援助出现以下显著进展：扩大气候资金规模；支持受援国重大的能源转型与电力互联项目，引导发展中国家弃用煤电，塑造区域乃至全球能源秩序；开展气候安全治理，防范由气候变化引发的安全风险；加强性别关怀，提升女性的适应能力。同时，发达国家的援助存在行动缺乏必要力度、内涵界定缺乏规范、贷款比例过高 ...
张锐 +5 more
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Relationships among patient market cognition, hospital dynamic and service capabilities, patient satisfaction, and hospital competitive advantages [PDF]
, 2023 The market environment in which aesthetic hospitals operate is intensely competitive, with patients frequently switching service providers. Understanding factors that affect patient satisfaction and perceived hospital competitive advantage is crucial ...
Xu Wei
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Gaoya dianqi, 2022 输变电设备运行状态评估是电网企业技术管理的重要内容，针对目前电力变压器健康状态评估模型中存在的对状态量单一赋权不合理、实现步骤较为繁琐、算法性能不稳定等问题，文中采用加权秩和比WRSR(weighted rank sum ratio)模型对电力变压器健康状态进行评估，该模型原理简单，易于实现。通过选取电力变压器运行中典型状态量，采用组合赋权的理论对各状态量赋予权值大小，进而计算评估对象的加权秩和比。利用加权秩和比确定待评估对象的概率单位，并将概率单位作为自变量代入回归方程中得到状态评估结果 ...
咸日常 +5 more
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基于不同扩散模型的扩散加权成像在脑胶质瘤分级和预测
Zhongshan Daxue xuebao. Yixue kexue ban, 2021 目的对比分析基于不同扩散模型的扩散加权成像（扩散张量成像：DTI，扩散峰度成像：DKI，和神经突起方向离散度与密度成像：NODDI）在脑胶质瘤术前预测脑胶质瘤级别和异柠檬酸脱氢酶-1（IDH-1）突变的诊断效能。方法回顾性分析中山大学附属第一医院2014年5月至2019年12月经手术病理证实的胶质瘤患者66例（WHO Ⅱ级28例，Ⅲ级10例，Ⅳ级28例），其中IDH-1基因表型明确的患者64例（IDH-1突变型34例，野生型30例）。采用德国西门子Magnetom Verio 3.0T ...
黄颖倩 +6 more
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Developing of the evaluation of water inrush risk from coal seam floor [PDF]
Reviews the development process of the evaluation of water inrush risk from coal seam floor. Then the system of risk evaluation is put forward: indexes (establishment of index system), methods (selection of evaluation methods) and tools (innovation of ...
Enke HOU +7 more
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Gaoya dianqi, 2020 高压开关柜作为配电网络中应用最广泛、使用数量最多的配电设备之一,为保证高压开关柜稳定运行及电网安全,需要对其状态进行准确评估。文中提出了一种综合赋权与加权秩和比（WRSR）相结合的新的开关柜状态评估方法。首先根据高压开关柜的绝缘状态、电气状态、机械状态和历史记录等信息,建立状态评估体系,运用层次分析法和熵权法相结合分别计算指标主客观权重并实现综合赋权;其次建立基于加权秩和比（WRSR）的开关柜状态评估模型,该模型构建简便,且具有强大的信息统计分析功能,可以实现状态分类及定量评估 ...
吴晗 +5 more
doaj
Summary and Prospect of Comprehensive Evaluation Methods of Power Quality [PDF]
ObjectivesWith the continuous development of China's new power system, there is a growing integration of new energy sources such as photovoltaic and wind power into the grid.
DONG Guangde, XIAO Bai, ZHAO Xuechun
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Assessing the potential and suitability of geothermal resources using Monte Carlo simulation and game-based combination weighting method [PDF]
BackgroundGeothermal energy in porous sandstone reservoirs is recognized as stable, efficient clean energy. However, these reservoirs feature heterogeneity and exploration uncertainty, posing serious challenges to probabilistic resource assessment and ...
Lei ZHU +4 more
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60 years of investigation on water inrush coefficient: Challenges faced and development directions [PDF]
Since the birth of the water inrush coefficient in 1964, in spite of it has undergone many improvements and changes in the past 60 years, its main body has always been the main method for predicting and evaluating the danger of bottom water inrush in my ...
Enke HOU +8 more
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Disaster-causing mechanism and prevention and control vision orientation of different types of coal seam floor water disasters in China [PDF]
China’s coal-forming conditions are harsh, the coal-bearing environment is complex and changeable, and the resources are distributed in a global, multi-geological type and scattered distribution, resulting in frequent occurrence of mining-associated ...
Houzhu WANG +11 more
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