Results 21 to 30 of about 89,101 (151)

Weaving knowledges to support wildlife health surveillance in Kenya's pastoral rangelands

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract In wildlife–livestock–human interfaces, pathogens capable of spreading between wild and domestic animals and humans have important implications for conservation outcomes, economics, and public health. Robust wildlife health surveillance can help address these risks.
Brock Bersaglio   +4 more
wiley   +1 more source

Impact of fetal and maternal characteristics on the accuracy and precision of sonographic fetal weight estimation: population‐based study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 66, Issue 6, Page 747-753, December 2025.
ABSTRACT Objective Ultrasound‐based fetal growth assessment is an essential part of clinical decision‐making in modern obstetric care. This study aimed to evaluate the impact of maternal and fetal characteristics on the accuracy and precision of sonographic fetal weight estimation.
M. Granfors   +4 more
wiley   +1 more source

强风作用下复合空心绝缘子的电场计算

open access: yesGaoya dianqi, 2020
高压断路器进出线的复合空心绝缘子主体长约8~10 m,弹性模量远小于瓷绝缘子。复合空心绝缘子在强风下会产生风偏,风偏量受风速大小和工作自身弹性模量影响。大幅风偏是否会引起复合空心绝缘子内外电场强度的畸变,劣化内外绝缘鲜有研究。由于高压复合空心绝缘子成本高,投运时间短,退运下来的样品较少。文中采用有限元分析的方法模拟强风工况,进行电场计算。针对750 kV断路器复合空心绝缘子在强风下振动的1阶模态振型,计算绝缘关键区域的电场强度,阐明风偏对接地屏蔽电极附近的电场畸变的危害最大,并给出了风速阈值 ...
张楠   +7 more
doaj  

Video Assistant Referee(ndums): A Populist Weapon or Effective Tool to Stop Autocrats in Competitive Authoritarian Regimes in Latin America?

open access: yesLatin 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

后悔倾向、后悔反应与风险偏好的关系研究

open access: yes, 2007
后悔和风险认知均是行为金融学的研究热点。本研究将后悔区分为后悔倾向和后悔反应,编制了《后悔倾向问卷》,考察了被试在人格层面上的后悔倾向与风险偏好的关系,同时探讨了被试在行为层面上后悔反应与风险偏好的关系。结果发现,后悔倾向与风险偏好呈负相关 ...
赖志刚, 时勘
core   +1 more source

110kV、220kV大风区防风偏复合绝缘子

open access: yesDianci bileiqi, 2012
针对新疆110 kV、220 kV架空线路引流跳线在大风区特殊地段发生风偏闪络问题,介绍一种适宜于大风区使用的110 kV、220 kV防风偏复合绝缘子研制、设计情况及生产工艺的控制过程。该形式的防风偏复合绝缘子风偏摆动有限,有效控制了导线与杆塔的空气间隙,解决了大风区引流跳线风偏闪络问题,其连接方式安装可靠,具有通用性,还有利于已运行线路的技改。
马钢, 谢金华
doaj  

Profiles of parental reflective functioning and mind‐mindedness in first‐time parents of 4‐month‐old infants

open access: yesInfant Mental Health Journal: Infancy and Early Childhood, Volume 46, Issue 6, Page 870-885, November 2025.
Abstract Profiles of parental reflective functioning (PRF) may offer valuable insights into individual differences in PRF. Previous studies have identified PRF profiles; however, further validation is needed. This study aimed to investigate the convergent validity of the identified PRF profiles by examining their association with a related measure of ...
Eva Back Madsen   +6 more
wiley   +1 more source

典型高压绝缘子串风荷载体型系数的试验研究

open access: yesGaoya dianqi, 2022
随着中国输电网电压等级的逐渐提高,对线路绝缘的要求也在提高。高压绝缘子串往更长、联数更多的方向在发展。绝缘子串的风荷载也随之增大。更易发生风偏和风振的现象。文中通过风洞试验,采用测力天平技术,对目前南方电网常用的两种玻璃绝缘子和一种伞形复合绝缘子的体型系数开展了深入研究。系统考察了不同湍流度、风速、风偏角、风攻角作用下单联及双联绝缘子的体型系数的变化规律和影响因素。试验表明,湍流度对体型系数影响不大;单联绝缘子体型系数随风速的增大而逐渐稳定在0.8~0.9之间;风偏角下体型系数有显著变化 ...
张志强   +5 more
doaj  

Reproductive outcome after frozen embryo transfer with hormone replacement therapy according to luteal‐phase support protocol: systematic review and network meta‐analysis of randomized controlled trials

open access: yesUltrasound in Obstetrics &Gynecology, Volume 66, Issue 4, Page 422-432, October 2025.
ABSTRACT Objective To compare reproductive outcome between luteal‐phase support (LPS) protocols for frozen embryo transfer (FET) cycles with hormone replacement therapy (HRT). Methods A search was conducted in MEDLINE, Scopus, LILACS, EMBASE, Scielo.br, PROSPERO, CINAHL, PsycINFO, AMED, ClinicalTrials.gov, ICTRP, the Cochrane Library and conference ...
A. Etrusco   +11 more
wiley   +1 more source

城市居民近郊休闲场所风格偏好研究——以长沙市为例 [PDF]

open access: yes, 2010
城市居民近郊休闲场所风格偏好研究对于近郊休闲企业场所建设、市场开发等意义重大。本文通过抽样调查获取了丰富的基础数据,进而对城市居民近郊休闲场所风格偏好进行了系统分析。通过单一样本T检验与均值比较,得出城市居民对近郊休闲场所风格偏好排序,发现城市居民对绿色、生态、清新、悠闲与优美等近郊休闲场所风格表现出特别的偏好,而对于现代、古老、私密、神秘与刺激等近郊休闲场所风格偏好相对较弱;通过探索性因子和验证性因子分析,发现城市居民近郊休闲场所风格偏好可分为乡村田园风格、现代时尚风格、古老神秘风格 ...
黄福才, 粟路军, 许春晓
core  

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