Results 31 to 40 of about 4,467 (118)
Evolution of research on global amphibian declines
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract In the late 1980s, the scientific community became aware of severe, enigmatic amphibian population declines. These declines triggered a wave of research focused on quantifying their extent and identifying key drivers. We used text‐analysis techniques, including topic modeling and geoparsing, to examine the evolution of research focused on ...
Jordann Crawford‐Ash +6 more
wiley +1 more source
Gaoya dianqi, 1991 真空灭弧室的真空度检测方法主要有脉冲磁控管放电法、高频火花检漏法和工频耐压法。 脉冲磁控管放电法检测真空度的范围一般为5×10-7～1.33×10-1Pa。可以定量分析,具有一定的检测精度。但是它的测量方法比较复杂,对于大多数真空断路器的用户来说不适用。 高频火花检漏法是根据火花放电的颜色来判断灭弧室内的真空度。当真空度低于1.33Pa时 ...
张正庆
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New Directions for Child and Adolescent Development, Volume 2026, Issue 1, 2026.Background Working memory updating is crucial in bilingual children′s second language (L2) reading comprehension. A robust updating ability is a cognitive key for children to successfully master L2 reading comprehension. Objective This study is aimed at investigating the effect of updating ability on the L2 Chinese reading comprehension among Uyghur ...
Guangxin Li +3 more
wiley +1 more source
Latin American Policy, Volume 16, Issue 4, December 2025.ABSTRACT In recent years, video assistant referee systems have been increasingly used to correct unfair decisions in sports. Similarly, I argue that constitutional referendums play a corrective role in hybrid or competitive authoritarian regimes, where the electoral referee is biased and the government enjoys unfair advantages.
Muhammet Derviş Mete
wiley +1 more source
Global Change Biology, Volume 31, Issue 11, November 2025.This study assessed the potential impacts of climate and land‐use change on soil fungal diversity across four North American biomes. We found that climate change typically caused both diversity losses and gains, particularly in coniferous forests and among arbuscular mycorrhizal fungi, whereas land‐use change mainly reduced diversity, especially in ...
Wenqi Luo +5 more
wiley +1 more source
Gaoya dianqi, 2000 介绍了电光法在线检测真空灭弧室真空度的原理和方法 ,在此基础上开发了一套试验系统 ,并给出了部分试验结果 ,为实现真空灭弧室真空度智能化在线检测做了准备工作。
段雄英, 赵子玉, 邹积岩
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The Empty State: Governing the Voids in a Projected Conflict‐Torn Yemen
Politics &Policy, Volume 53, Issue 5, October 2025.ABSTRACT This study introduces the concept of the “Empty State” to explain a form of state dysfunction in Yemen, where state institutions exist but are stripped of their governance authority. While frameworks on fragile or failed states emphasize the weakness or collapse of state capacity, the Empty State highlights the persistence of symbolic ...
Moosa Elayah
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 65, Issue 5, Page 624-632, May 2025.ABSTRACT Objectives Placental insufficiency contributes to many obstetric pathologies, but there is no bedside clinical tool to evaluate placental perfusion. We have developed a method to acquire multiple three‐dimensional (3D) power Doppler (PD) ultrasound (US) volumes of placental vasculature, with infrared camera tracking of the precise spatial ...
A. Xue +5 more
wiley +1 more source
Gaoya dianqi, 2017 基于灰色关联度和TOPSIS法对真空断路器运行状态进行综合评估,根据真空断路器典型故障类型,构建由振动信号、真空度、电寿命、触头温度组成的评估指标体系,采用熵权法确定各项指标权重系数。通过样本与正理想解和负理想解的欧氏距离和灰色关联度描述样本与理想方案的贴近程度,综合灰色关联度和欧氏距离计算评估样本的相对贴近度,并据此对评估样本进行优劣排序。实例论证及与其他方法对比表明,该方法可以客观有效地评估真空断路器运行状态,为合理安排真空断路器检修计划以及指导真空断路器设备维修提供可靠参考。
李济沅 +4 more
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