Results 11 to 20 of about 25,407 (149)
Wildlife Letters, EarlyView.We used spatially explicit capture‐recapture to estimate jaguar densities in a private reserve in the Colombian Llanos and quantified land cover change in and around the reserve from 2014 to 2024. Densities increased 22% since 2014, while disturbed land cover increased by 39%–54% around the reserve depending on buffer distance. Our study indicates that
Valeria Boron +7 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2023 在不进行量子色动力学（quantum chromodynamics，QCD）整体分析的情况下，估算新数据对部分子分布函数（parton distribution functions，PDF）的影响，以及用更新的部分子分布函数预测其他可观测量不确定度的贡献是一项非常有用的工作。首先，用更新和优化的部分子分布函数软件ePump（error PDF updating method package）研究由CMS 8 TeV顶夸克对产生的微分散射截面1/σdσ/dytt¯、1/σdσ/dmtt¯ 、1/σdσ ...
木沙江·卡得尔(MUSAJAN Kadir) +3 more
doaj +1 more source
Wildlife Letters, EarlyView.We conducted a grouping study on 52 adult musk deer to investigate whether group sex composition modulates aggressive behavior and stress response in captive musk deer. We found that the conflict interactions of all‐male groups were significantly more than those of mixed groups, and compared with the mixed groups, the conflict interactions of all‐male ...
Xiaolong Wang +5 more
wiley +1 more source
四川大学学报. 自然科学版, 2007 多方程线性模型系统的贝叶斯预报分析是贝叶斯线性模型理论的重要组成部分.作者利用模型系统的统计结构,证明了矩阵正态-Wishart分布为模型参数的共轭先验分布.利用贝叶斯定理,作者根据模型的样本似然函数和参数的先验分布推得了参数的后验分布,然后从数学上严格推断了模型的预报分布密度函数,证明了模型预报分布为矩阵t分布.研究表明由于参数先验分布的作用,样本的预报分布与其原统计分布有着本质性差异,前者服从矩阵正态分布,而后者服从矩阵t分布.
朱慧明, 韩玉启, 吴正刚
doaj
Wildlife Letters, EarlyView.The study explores how beavers (Castor spp.) affect endangered freshwater pearl mussels (Margaritifera margaritifera) in European rivers. Beaver dams can harm small, fragmented mussel populations by reducing flow, increasing sediment, and potentially limiting host fish movement, while larger populations may benefit from improved bed stability and ...
Louise Lavictoire +2 more
wiley +1 more source
Gaoya dianqi, 2015 绝缘子串表面污秽分布不同,影响绝缘子串电压分布。用有限元法,在ANSYS软件中建立污秽绝缘子串三维模型,改变污层位置、污秽参数等条件模拟不同污秽物分布形式,采用准静态谐分析法研究污秽分布对污秽绝缘子串电压分布的影响。计算结果表明均匀湿润污秽绝缘子串电压分布比洁净绝缘子串均匀,周向分布不均的污秽绝缘子串湿润后两侧电位分布不一致,而两端污秽较重的绝缘子串中间部位分布电压最高;污秽干燥时对绝缘子串电压分布影响甚小。
叶丽莎 +4 more
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
wiley +1 more source
四川大学学报. 自然科学版, 2014 本文作者考虑了独立同分布情形下广义logistic分布和混合广义logistic分布最大值的渐进分布及其赋范常数,并得到了相应的最大值收敛到极值分布的点点收敛速度.
黄建文, 陈守全, 李文兴
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A new skew Laplace distribution(一种非对称拉普拉斯分布)
Zhejiang Daxue xuebao. Lixue ban, 2014 讨论一种新的非对称拉普拉斯分布，研究了该分布的性质、数字特征、参数估计、应用等，并将该分布与拉普拉斯分布在实际应用中的效果进行了对比.
ZHANGGuofen(张帼奋), DINGNing(丁宁)
doaj +1 more source
The collective application of shorebird tracking data to conservation
Conservation Biology, EarlyView.Abstract Addressing urgent conservation issues, such as the drastic declines of North American migratory birds, requires creative, evidence‐based, efficient, and collaborative approaches. The abundance of over 50% of monitored North American shorebird populations has declined by over 50% since 1980. To address these declines, we developed a partnership
Autumn‐Lynn Harrison +71 more
wiley +1 more source