Results 61 to 70 of about 138,296 (217)
Behavioral interventions to reduce demand for threatened freshwater turtles as pets
Conservation Biology, EarlyView.Abstract Growing demand for freshwater turtles as pets has fueled illegal trade and accelerated wild population declines, underscoring the need for theory‐based demand‐reduction interventions. We conducted a three‐part randomized controlled trial with active turtle keepers (n = 1800) in China to test conservation‐ and legality‐framed messages by ...
Wuji Zheng +9 more
wiley +1 more source
Gaoya 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
, 2012 评估界对于棕地评估的几个要点几乎是完全一致的,但是对于实践中的执业评估师来说,许多问题仍然存在。诸多评估中的价值估计——尤其是在各种方法确定之后,关于许多调整因素的合理性方面——都是基于评估师的判断。然而,却很少有什么指南可用来帮助评估师做出这些判断。当评估师开始将受损的与未受损的物业作比较时 ...
John Kilpatrick +4 more
core
Modeling seed germination data to meet biodiversity conservation needs in the Mediterranean
Conservation Biology, EarlyView.Workflow to assess the availability and quality of germination data and assign species' thermal risk in the Mediterranean. (a) Assessment of data availability, including the phylogenetic distribution of the number of records (i.e. available germination data); (b) data quality assessment; and (c) assignment of climate risk categories for species that ...
Diana María Cruz‐Tejada +2 more
wiley +1 more source
Haiyang 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
Conservation Biology, EarlyView.Abstract Site fidelity is the tendency for animals to repeatedly return to the same locations, either within or between years. Site fidelity enables animals to utilize knowledge of previously visited locations, including assessments of seasonal variations in health and mortality risks (e.g., predation), resource availability, and social benefits such ...
Tobias A. Ross +13 more
wiley +1 more source
Gaoya 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
Conservation Biology, EarlyView.Abstract Modeling species distributions in dynamic pelagic environments remains challenging, particularly for wide‐ranging and highly mobile species when there is limited guidance on model performance. This limitation constrains the effective use of species distribution models (SDMs) in marine conservation, where robust and transferable predictions are
E. Pasanisi +32 more
wiley +1 more source
Gaoya dianqi, 2022 针对变压器本体绝缘状态评估中的状态信息指标的不确定性，文中提出了基于模糊评判理论与DSmT的变压器本体多级绝缘状态评估模型，该模型分为本体绝缘状态等级评估与绝缘缺陷风险等级评估。应用模糊评判理论构建等级评估的隶属度函数模型，选择反映变压器绝缘状态的绝缘类指标参量作为模型的输入，应用熵权法改进的DSmT对指标隶属度进行融合得到最终的等级评估结果，该模型有效克服了等级区间界限值过于绝对化的局限性，解决了传统DST高冲突性证据的融合问题。通过实例验证，该模型的评估结果具有一定的有效性 ...
夏彦卫 +5 more
doaj
Conservation Biology, EarlyView.Abstract Adaptive management of threatened species relies on having ex ante estimates of species’ responses to different interventions. Structured expert elicitation is often used to generate these estimates, but comparisons of these expert‐predicted outcomes with observed results are rare.
Helen J. Mayfield +18 more
wiley +1 more source