Results 51 to 60 of about 24,356 (164)

基于集对分析和综合赋权的电力变压器套管绝缘状态评估

open access: yesGaoya dianqi, 2018
针对当前电力变压器套管绝缘状态评估中各评价参量存在复杂性和不确定性的问题,文中应用集对分析方法对变压器套管进行绝缘状态评估。首先选取用于套管状态评估的指标,对评估结果进行等级划分并制定响应策略,采用层次分析法和熵权法融合的综合赋权法来确定各评估指标的权重,构造联系度数学表达式来描述评估指标与状态等级之间的关联程度,建立起集对分析状态评估模型。实例计算分析表明,基于集对分析方法和综合赋权的状态评估模型能够有效反映变压器套管的绝缘状态,评估结果可为变压器的状态检修提供有效参考。
李志超   +4 more
doaj  

Using the capabilities approach to achieve people‐centered conservation

open access: yesConservation Biology, EarlyView.
Abstract Top‐down interventions carried out by state and nonstate institutions to conserve biodiversity and improve the lives of forest‐proximate people (FPP) in the Global South tend to reflect economistic understandings of human well‐being. More progressive and people‐centered conservation projects are guided by normative visions of how the world ...
Arthur Rodrigues   +4 more
wiley   +1 more source

Optimizing biodiversity offsetting for habitat succession and colonization dynamics

open access: yesConservation Biology, EarlyView.
Abstract Biodiversity offsetting aims to compensate for ecological losses from development through conservation and restoration. However, its long‐term outcomes under repeated impact–offset cycles remain uncertain. Using a conceptual forest succession model, we evaluated how offset outcomes are affected by interactions among compensation scale ...
Konstans Wells   +4 more
wiley   +1 more source

海底油气管道稳定性风险评估技术研究

open access: yesHaiyang gongcheng zhuangbei yu jishu, 2014
为了保证海底油气管道安全运营,实现海底油气田安全生产和可持续发展,需要对海底油气管道进行风险评估.根据国外标准规范和工程经验,阐述了评估海底油气管道稳定性风险的技术思路,就危险辨识,后果评估,频率分析和风险矩阵等4个因素探讨了管道风险的评估方法,重点研究了影响海底油气管道稳定性的风险情况和相应的评估准则.最后结合海底管道的特点总结了影响海底油气管道稳定性的危险因素,使用半定量评估法和定性评估法对海底油气管道稳定性风险进行了评估,给出了稳定性风险评估的主要项目和相应的推荐权重值 ...
周子鹏, 孙国民, 何宁
doaj  

Methodology to identify ecologically matching areas and its applications in conservation planning

open access: yesConservation Biology, EarlyView.
Abstract Identifying ecologically matching areas is both challenging and critical for understanding spatial patterns of biodiversity and advancing conservation planning. However, existing approaches often lack spatial flexibility, overlook shape and size constraints, or rely on limited environmental parameters, reducing their effectiveness in real ...
Pietro Milanesi   +7 more
wiley   +1 more source

基于物元可拓理论的高压断路器状态评估方法

open access: yesGaoya dianqi, 2017
高压断路器的运行状态评估是指导高压断路器状态维修、提高其运行可靠性及保证电力系统安全稳定运行的重要手段。文中依据物元可拓理论和证据融合理论建立了一个高压断路器状态评估模型。首先对高压断路器状态评估进行物元分析,通过构造关联函数并计算评估指标的关联函数值,仅凭关联函数值的正负就能初步确定评估指标是否异常;然后依据集对分析理论对评估指标初步所处状态等级的不确定性进行处理,得到评估指标的等级关联度,并将评估指标的等级关联度进行修正作为信任分配函数 ...
常怡东, 张开轩, 金潇
doaj  

Comparing screening outcomes for private sector nature‐related assessments based on national and global biodiversity datasets

open access: yesConservation Biology, EarlyView.
Abstract In response to demand for better biodiversity stewardship from the private sector, frameworks such as the Taskforce on Nature‐related Financial Disclosures (TNFD) have been developed to help companies assess, manage, and disclose their nature‐related impacts, dependencies, risks, and opportunities.
Takuya Nomura   +3 more
wiley   +1 more source

一种新的多机场终端区容量评估方法研究

open access: yes四川大学学报. 自然科学版, 2010
分析了影响终端区容量的各种因素,提出了一种新的多机场终端区容量评估方法.运用网络规划模型和仿真模型相结合的方法,评估了上海终端区虹桥机场和浦东机场分别在单独运行和联合运行情况下的终端区容量.评估结果分析表明该方法是一种较其他容量评估模型更通用的评估方法,对单机场终端区和多机场终端区的容量评估及其影响因素分析均具有良好的适应性,评估结果准确,符合终端区实际运行情况.
彭瑛, 胡明华, 黄真
doaj  

Early outcomes of England's new biodiversity offset market

open access: yesConservation Biology, EarlyView.
Abstract Nature markets are being operationalized as a tool to address the biodiversity finance gap and achieve global biodiversity targets. However, there is limited understanding of how the outcomes of these markets align with biodiversity targets.
N. E. Duffus   +3 more
wiley   +1 more source

基于模糊理论的高压断路器状态评估研究

open access: yesGaoya dianqi, 2007
结合目前国内外高压断路器的状态监测及评估现状,将模糊数学理论应用到高压断路器的状态评估中。采用模糊层次分析法代替层次分析法对评价因素集进行权重分配,改进了以往模糊综合评估中的判断矩阵一致性问题,确定了各评判因素对象及其计算方法和隶属函数,建立了模糊综合评估模型,利用多种评价因素对高压断路器的工作状态进行了评估。
李宇, 张国钢, 耿英三
doaj  

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