Results 31 to 40 of about 22,745 (142)
Gaoya dianqi, 2021 工程应用中,案例推理是设备故障分析的重要手段之一。针对将传统案例检索技术应用于变压器故障分析时,会发生因其待诊数据向量残缺,而导致检索结果不理想的问题,文中提出了一种基于集对分析的变压器故障案例检索方法,通过集对分析中的联系数定义案例间的相似性,配合"案例级"的指标权重设计,一方面计及了针对不同故障模式时同一指标权重的变化;另一方面解决了数据缺失、指标权重变化情况下案例相似度可比的问题。实例分析的结果表明:文中方法在变压器故障诊断中的有效性更具优势。
罗颖婷 +7 more
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Language Learning, EarlyView.Abstract Measurement of interactional competence (IC) has attracted increasing interest in language assessment research. One key question is whether proficiency sufficiently accounts for IC, making separate IC assessment unnecessary. This study examines the IC–proficiency relationship using a test that assesses Chinese speakers’ ability to manage ...
David Wei Dai, Carsten Roever
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Gaoya dianqi, 2014 在传统的变压器状态评价方法中,常权无法客观反映变压器部分参数偏离正常值时对整体评价影响。基于此,笔者提出了基于变权重的变压器模糊综合状态评价方法。首先采用层次分析法确定变压器各影响因素指标的权重,然后考虑实际情况对各影响因素权重进行变权处理,减少评价的主观性,使变压器的状态评价结果更为合理。应用文中方法对实际变压器进行状态评价,验证了该方法的合理性和可行性。
李磊, 熊小伏, 沈智健
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There Is Always a Bigger Fish. Determinants of Power Perceptions in Swiss Biodiversity Policy
Policy Studies Journal, EarlyView.ABSTRACT The Advocacy Coalition Framework (ACF) views power as crucial in policy processes, but the nature of coalition power, its determinants, and how to empirically measure it remain understudied. In this article, we use a mixed method approach and social network analysis to explore power relationships in the biodiversity policy subsystem in ...
Alix d'Agostino +2 more
wiley +1 more source
Gaoya dianqi, 2009 根据高压断路器状态信息的多层次性和多因素性,建立高压断路器状态评估的层次型指标体系。利用模糊综合评判法,建立高压断路器运行状态评估模型,通过对各层评判因素的评估,综合得出断路器的具体运行状态。指标的权重先由层次分析法确定常权权重,然后引入基于均衡函数的变权模式,对常权进行修正得到变权,以提高状态评估的准确性,为高压断路器状态评估提供了一种新的思路。
陈伟根, 魏延芹, 廖瑞金
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Designing Integrated Policies for the Twin Transition: Challenges and Tradeoffs
Policy Studies Journal, EarlyView.ABSTRACT Democratic governance faces the intertwined imperatives of managing the transformative risks and opportunities of digitalization, particularly stemming from artificial intelligence (AI), while achieving environmental sustainability within planetary boundaries.
Martino Maggetti
wiley +1 more source
Guangtongxin yanjiu, 2018 骨干光通信网链路容易受到破坏而失效,从而导致通信故障,因此对骨干光通信网链路重要度进行识别,并根据链路重要度等级确定链路的防护等级具有重要意义。文章针对骨干光通信网拓扑层,首先计算网络的自然连通度,将拉普拉斯矩阵零特征根重数作为自然连通度的权值,定义了加权自然连通度;然后基于加权自然连通度来分析链路失效对网络抗毁性的影响,定量计算链路拓扑重要度,实现对骨干光通信网链路重要度的识别;最后,对算法流程进行说明,并以具体电力通信骨干光网络模型为例,通过仿真对比分析算法的有效性和准确性,仿真结果表明 ...
何玉钧, 高晗星, 周生平
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Gaoya dianqi, 2020 针对目前中压断路器评估中存在的结果模糊度较高、确信度较差的不足,采用相对熵组合赋权思想提出一种中压断路器运行状态的灰云—模糊熵评估模型。该模型采用直觉层次模糊分析法确定评判参量的主观权重,基于分析信息量差异的交叉熵法得到客观权值,采用相对熵求得最优组合权重;同时,运用云模型改进灰色白化权函数;引入模糊熵理论来刻画评估的复杂不确定程度,并作为辅助参评量。实例分析表明,该方法可行有效,为中压断路器状态评估研究提供了可行思路。
杨凡 +5 more
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World Food Policy, Volume 12, Issue 2, November 2026.ABSTRACT This study explores environmental justice issues in coastal food systems, focusing on conflicts between small‐scale fisheries and the energy sector due to differing goals in managing food and energy sources. It does so by examining the interdependence between institutions, policies, and different types of knowledge; key elements in building ...
Mateus Henrique Amaral +6 more
wiley +1 more source
Shuitu Baochi Xuebao, 2004 利用构建AHP评判矩阵计算各评价指标的权重,根据对专家建议值的统计,确定4个分时期对整个坡面植被恢复群落质量的影响权重,并计算出坡面植被质量的最终值,然后根据给出的值域进行植被恢复群落质量等级划分。
胥晓刚 杨冬生 胡庭兴 白史且
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