Results 21 to 30 of about 915,728 (156)
Emerging applications of large language models in ecology and conservation science
Conservation Biology, EarlyView.Abstract Large language models (LLMs) mark a major development in artificial intelligence, with potentially transformative implications for ecology and conservation science. Built on advanced deep‐learning architectures, these models can support a wide range of tasks. We reviewed emerging applications of LLMs, drawing on the wider scientific literature
Christos Mammides +5 more
wiley +1 more source
Dizhen xuebao基于震源运动学模型，采用宽频带混合模拟方法，对2014年鲁甸MW6.1地震开展了考虑复杂震源破裂过程的地震动模拟，将代表性场点的模拟结果与实际观测的强震记录进行对比，分析了不同震源模型对场点强地面运动特征影响的差异。结果表明：就震源尺度有限的中等地震而言，地震矩相近的不同震源破裂模型对震中距稍远场点的地震动影响差异相对较小，而对近震源区场点的地震动特征影响差异则较为明显。此外，不同震源模型模拟的地震动参数空间分布结果显示，不同震源模型对地震动的空间分布形态具有显著影响。
Yijun Liu +4 more
doaj +1 more source
Algorithm of the modified iterative process for nonexpansive mappings(非扩张映像不动点的一种变形迭代算法)
Zhejiang Daxue xuebao. Lixue ban, 2009 在Hilbert空间的框架下,用一种变形的迭代格式xn+1 =αnf(xn) +βnxn + γnTxn,研究一闭凸集合C上的非扩张映像的不动点问题,当满足适当的条件,且n→∞时,{xn}强收敛至T的一个不动点,并且此点也是某变分不等式的解.去掉了一些作者提出的相应条件,其结果改进了相应文献的一些近代结果.
WANGYuan-heng(王元恒), XUWei(徐卫)
doaj +1 more source
Evaluating the use of taxonomy in the IUCN Red List
Conservation Biology, EarlyView.Abstract Taxonomy defines the units that conservationists strive to preserve for future generations. However, the discovery of new species and the taxonomic revision of existing species affect conservation efforts. Despite the importance of taxonomy for a species’ conservation, there is currently no overview of how those leading species extinction risk
Stephen T. Garnett +8 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2021 为研究冲击荷载下节点刚度和冲击速度对焊接球节点动力响应的影响,对缩尺节点试件进行不同高度下的冲击试验;采用ANSYS/LS-DYNA软件中的Shell163壳单元模拟焊接球和杆件,采用Solid164实体单元模拟冲击物,建立焊接空心球节点精细化有限元模型。将试验结果和有限元分析结果进行对比,验证有限元模型的有效性。通过改变钢球冲击高度、球节点壁厚和直径,从节点的动应力、动应变、动位移、冲击力以及冲击能量5个方面,对焊接球节点开展动力响应分析。研究结果表明:动力响应随冲击能量的增加而增大 ...
吴长, 刘家乐, 王仁红
doaj
Scientists’ warning on the global destruction of rock outcrop ecosystems
Conservation Biology, EarlyView.Abstract Rock outcrops are geological formations that harbor a highly specialized biota adapted to harsh environmental conditions that differ from their surrounding landscapes. They are globally distributed, especially in old, highly weathered landscapes, and can function as habitat islands containing high levels of endemism and distinct evolutionary ...
Luiza F. A. de Paula +19 more
wiley +1 more source
四川大学学报. 自然科学版, 1980 设E是完备的距离空间,设{Si}i∈I是映E到E的映象族,这里I表指标集,它可以是有限集,也可以是可数或不可数的无限集。x*∈E称为{Si}i∈I的公共不动点,如果Six*=x* （?）i∈I.关于完备距离空间中映象的公共不动点问题,最近以来有不少的作者进行过研究.Chi Song Wong在[1]中讨论过两个映象的公共不动点的问题;在T.Mitchell和T·Lau Anthony,Chi Song Wong中分别讨论过映象半群的公共不动点的问题.最近,R·E·Bruck,Anuradha ...
张石生
doaj
Effects of restoration practices on biodiversity in temperate and boreal forests
Conservation Biology, EarlyView.Abstract Several restoration practices are used to mitigate and compensate for the negative effects of large‐scale forestry on biodiversity in temperate and boreal forests. A comprehensive synthesis of the benefits of these practices across taxa is missing. We conducted a systematic review and meta‐analysis on this topic.
Malin Tälle +2 more
wiley +1 more source