Results 11 to 20 of about 1,605,470 (149)
Guangtongxin yanjiu, 2006 针对光码分多址多用户干扰问题,主要研究两种减小多用户干扰的方法（引入两个光硬限幅器法和多比特传输法）中哪种方法对多用户干扰的抑制效果更强。推导了上述方法的误码率性能,并进行了仿真。仿真结果表明,引入两个光硬限幅器的方法对多用户干扰的抑制效果比多比特传输的方法要好,当接收功率>-52 dBm时,前者比后者的误码率可改善5个数量级。
李晓滨
doaj +2 more sources
Social media governance and strategies to combat online hatespeech in Germany
Policy &Internet, Volume 15, Issue 4, Page 627-645, December 2023., 2023 Abstract Concerns over online hatespeech have prompted governments to strengthen social media governance. However, claims by policy‐makers and political activists regarding the effectiveness and likely consequences of legal regulations remain largely untested.
Daniela Stockmann +2 more
wiley +1 more source
Wildlife Letters, Volume 1, Issue 2, Page 59-70, June 2023., 2023 We used three robust modeling approaches and the largest empirical dataset yet collected for Sunda pangolin to investigate their habitat associations and the likelihood of spatially and temporally overlapping with humans. We found the species has an inconsistent response to disturbances across multiple scales, expected to be driven by Singapore's ...
Ilyas Nursamsi +4 more
wiley +1 more source
Methods in Ecology and Evolution, Volume 14, Issue 6, Page 1443-1456, June 2023., 2023 Abstract Successful use of stable isotopes (δ2H and δ18O) in ecohydrological studies relies on the accurate extraction of unfractionated water from different types of soil samples. Cryogenic vacuum distillation (CVD) is a common laboratory‐based technique used for soil water extraction; however, the reliability of this technique in reflecting soil ...
Bin Yang +14 more
wiley +1 more source
Global effects of forest modification on herpetofauna communities
Conservation Biology, Volume 37, Issue 1, February 2023., 2023 Abstract As the area covered by human‐modified environments grows, it is increasingly important to understand the responses of communities to the novel habitats created, especially for sensitive and threatened taxa. We aimed to improve understanding of the major evolutionary and ecological processes that shape the assemblage of amphibian and reptile ...
Maider Iglesias‐Carrasco +2 more
wiley +1 more source
, 2001 采用高精度差分格式求解非定常可压缩N-S方程,对激波－单涡／双涡相互干扰产生的声场进行了直接数值模拟.详细研究了波－涡干扰声场结构的早期发展阶段,将激波－单涡的计算结果和相应实验进行了对比,并给出近场声压的衰减规律.在此基础上模拟较为复杂的激波－双涡干扰 ...
马延文, 胡国庆, 傅德薰
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Wildlife Letters, EarlyView.We staged dyadic interaction trials between two kangaroo rat species threatened by habitat loss to test whether one species dominates in direct interactions in the field. We found that Stephens’ kangaroo rat (Dipodomys stephensi) residents and intruders were dominant over Dulzura kangaroo rat (Dipodomys simulans). These results suggest that D. simulans
Janine N. Straughan +2 more
wiley +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Atmospheric nitrogen deposition disrupts plant–herbivore interactions, but its impact on leaf volatile organic compounds (VOCs)‐mediated multi‐trophic herbivore resistance remains unclear within the context of plant invasion. In this study, we initially investigated the
Wanci He +7 more
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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
Measuring Governance or Wealth? Construct Validation of AI Readiness Indices
Policy &Internet, Volume 18, Issue 3, September 2026.ABSTRACT Many are the promises of artificial intelligence and the indices claiming to measure government readiness for it. This study provides the first construct validity investigation of the Oxford Insights Government AI Readiness Index, the Tortoise Global AI Index, and the IMF AI Preparedness Index, using a nine‐test battery and drawing on ...
Anis Ben Brik
wiley +1 more source