Results 21 to 30 of about 495,326 (144)
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
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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
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Gaoya dianqi, 2023 均压电极是高压直流输电工程换流阀内冷水系统的重要部件，起到钳制电势和减小泄漏电流的关键作用，但是在运行过程中，均压电极发生腐蚀或者断裂，将导致换流阀阀塔上与内冷水管道接触的金属器件发生腐蚀，内冷水系统发生渗漏、堵塞等，从而使得换流站因设备过热、水管漏水等问题造成的停运事件屡有发生，严重影响直流工程的安全稳定运行。因此，研究均压电极断裂相关机理和原因能够有效减小内冷水系统事故。文中通过分析均压电极在水管内的受力情况，结合铂金材料的特性，首次从剪切强度的角度开展了均压电极断裂分析。文中从材料成分、力学性能 ...
肖凯 +5 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Collaborative writing has attracted increasing attention in English as a Foreign Language (EFL) instruction due to its potential to enhance learners’ writing competence. However, few studies have examined the comparative effects of collaborative versus independent writing on EFL learners’ individual performance, especially in higher‐order ...
Ting Huang, Chenze Wu, Wenkang Zhang
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Finetuning Pre‐Trained Language Models for Automatic Assessment of English‐Chinese Interpreting
International Journal of Applied Linguistics, EarlyView.ABSTRACT Recent years have seen growing interest in leveraging pre‐trained language models (PLMs) for automatic assessment of spoken‐language performance. Contributing to this emerging line of work, the present study offers the first attempt to finetune two PLMs, GTE‐multilingual and mmBERT, for assessing English‐Chinese interpreting, using over 1700 ...
Zhaokun Jiang, Chao Han
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, 2015 利用Openfoam开源软件,基于N-S方程,采用大涡模拟方法模拟湍流流动,结合VOF(Volume ofFluid)多相流模型和Kunz空化模型 ...
王一伟, 余超
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Shuitu Baochi Xuebao, 2011 根据相关水文气象台站的降水、蒸发、气温和流量观测资料,分析了石羊河流域年平均流量的变化特征及原因.研究表明:45 a来,石羊河流域年平均流量总体呈略减少趋势,流域东、中部年平均流量呈减少趋势,流域东部减少幅度最大,流域西部年平均流量呈略增加趋势.石羊河流域年平均流量的年内分配因受补给条件的影响四季分明,四季流量大小依次为夏季、秋季、春季、冬季.流域四季年平均流量都呈减少趋势,变幅最大的是夏季,冬季最小.石羊河流域在不同时段不同区域年平均流量都存在6～7 a和9～10a的长周期和2～3 a的短周期 ...
李玲萍, 刘明春
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Shuitu Baochi Xuebao, 2020 为实现永定河北京段沙质河道生态修复，通过野外径流小区放水冲刷试验，在3种放水流量（0.5，1.0，1.5 m3/h）、坡度10°、5种护岸材料（生态袋、椰丝植生毯、三维土工网、松木桩、卵石）下分析不同生态护岸坡面的水动力学特性、产流产沙状况。结果表明：（1）3种放水流量下5种护岸材料布设坡面的平均流速均小于裸坡，5种护岸材料平均径流流速均表现为卵石 > 松木桩 > 三维土工网 > 生态袋 > 椰丝植生毯。5种生态护岸材料弗劳德数均小于1，雷诺数均小于500。（2）生态护岸措施有效减少产流 ...
郑雪慧 +4 more
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Gaoya dianqi, 2023 随着当今时代电力电子技术的发展，SiC MOSFET在高频、高温、高压以及大电流等场合中得到广泛应用，然而，由多管并联所导致的不均流问题成为了当下SiC MOSFET模块广泛应用中的一大阻碍。针对这一问题，文中提出一种基于动态栅电阻的SiC MOSFET模块并联均流方法，其主要原理是通过利用SiC MOSFET开关瞬间漏极电流在源极寄生电感上感应出的电压来检测电流，并通过动态调节栅极驱动电阻来实现并联模块的电流同步。最后，通过利用多脉冲实验对文中所提出的均流策略的可行性及优势进行了实验验证。结果表明 ...
张瑜, 田鸿昌, 文阳
doaj
Identical Platform, Divergent Publics: Sweden and Finland During the 2022 NATO Crisis
Policy &Internet, Volume 18, Issue 3, September 2026.ABSTRACT Digital platforms are often theorized as universal drivers of political polarization, yet empirical patterns remain inconsistent across countries. Leveraging the natural‐experiment logic of Sweden's and Finland's simultaneous 2022 NATO applications and the NATO–Turkey diplomatic crisis, this study examines how national political cultures ...
Selcen Ozturkcan
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