Results 11 to 20 of about 5,581 (107)

Research on the Interaction Between Multi-Circuit Shared HVDC Grounding Electrodes [PDF]

open access: yes, 2023
[Introduction] Unlike the independent grounding electrode, shared earth electrode is connected to multiple DC (Direct Current) systems, and its parameters and operation mode need to be determined by each system connected to it.
Wen WANG, Yu LIU
core   +1 more source

Discharge characteristics and discharge simulation model of long air gaps containing a floating conductor [PDF]

open access: yes, 2022
Long air gaps containing a floating conductor are common insulation types in power grids. During the transmission line live-line work, the process of lineman entering the transmission line air gap constitutes a live-line work combined air gap, which is a
Gao, Jiachen <1995>
core   +1 more source

Identifying and developing effective post‐2020 conservation bridging leaders

open access: yesConservation Biology, Volume 36, Issue 6, December 2022., 2022
Abstract Effective bridging leaders interact within and outside their group to facilitate collaboration required in multistakeholder contexts. This is particularly crucial to community‐based conservation interventions that strive to achieve both ecological and social objectives by actively engaging or devolving decision‐making and management authority ...
Wayne Stanley Rice
wiley   +1 more source

Women's invisible work in disaster contexts: gender norms in speech on women's work after a forest fire in Sweden

open access: yesDisasters, Volume 46, Issue 1, Page 141-161, January 2022., 2022
The aim of this study is to investigate what women do in disaster situations and how both men and women perceive and discuss the work of women. These patterns were evidenced in the stories that were told following the largest forest fire in the modern history of Sweden in July 2014.
Erna Danielsson, Kerstin Eriksson
wiley   +1 more source

A quest for quality care: Exploration of a model of leadership relationships, work engagement, and patient outcomes 寻求优质护理:领导关系、工作投入和患者结果的模型探索

open access: yesJournal of Advanced Nursing, Volume 77, Issue 1, Page 207-220, January 2021., 2021
Abstract Aim To explore the effects of resonant leadership, leader exchange relationships and perceived organizational support on work engagement and patient outcomes. Design A cross‐sectional survey design. Methods Data were collected in June and July 2016 from 252 nurses and clerical staff and institutional patient safety (falls rates) and patient ...
Jenny M. Parr   +2 more
wiley   +1 more source

International clinical practice recommendations on the definition, diagnosis, assessment, intervention, and psychosocial aspects of developmental coordination disorder – Chinese (Mandarin) translation

open access: yesDevelopmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019
目的 本国际临床指南由欧洲残疾儿童学会(the European Academy of Childhood Disability,EACD)牵头制定,旨在解决发育性协调障碍(developmental coordination disorder,DCD)的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题,通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础,以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类,最终转化为指南建议。并由国际 ...
Jing Hua   +6 more
wiley   +1 more source

Setting goals for pollinator gardens

open access: yesConservation Biology, Volume 39, Issue 4, August 2025.
Abstract In recent years, declines in animal pollinators have stimulated tremendous interest in pollinator‐friendly gardening. There is a widespread notion that pollinator gardens are beneficial, but the specific capacity of pollinator gardens to improve biodiversity conservation and societal well‐being remains unclear.
Nicholas N. Dorian   +3 more
wiley   +1 more source

Engaging youth in biodiversity education through visual narrative

open access: yesConservation Biology, Volume 38, Issue 6, December 2024.
Abstract Engaging youth in early and sustained conservation education has important implications for promoting positive attitudes and behaviors in those who will become the future of conservation and management. Toward this goal, visual narratives (comic books, graphic novels) are an increasingly popular method used by conservation scientists to ...
Kyra Ricci   +3 more
wiley   +1 more source

深井型直流接地极散流机理研究

open access: yesDianci bileiqi, 2020
准确计算直流接地装置的散流性能及接地特性是优化设计直流接地极的基础。提出了基于恒定电场理论的直流接地装置性能有限元数值计算模型,针对求解区域和接地导体截面尺寸的差异导致的剖分困难、计算量大的问题,引入"薄壳"理论,在保证计算精度的前提下大大减小了计算量;通过与文献数据对比,验证了该方法的有效性。建立典型结构的深井型接地极模型,计算深井接地极散流过程产生的地中电流密度、电场强度、接地电阻和最大跨步电压等参数;分析电流注入点个数、接地极导体长度、接地极埋深、导体并联根数以及土壤电阻率等因素对接地性能的影响 ...
李景丽, 冯鹏, 栗超超
doaj  

降阻剂对垂直型直流接地极电气性能参数影响分析

open access: yesDianci bileiqi, 2018
交流接地系统一般只会流过短时故障电流,而直流接地极在单极运行方式下,需要长时间通过几千安培的工作电流,因此对接地极各项电气性能参数(接地电阻、地电位升、跨步电压、电流溢流密度等)的要求更为苛刻,从而对极址选择和极体设计的要求也更高,有鉴于此,结合四川省兴文县万寿极址的土壤模型,采用数值分析的方法,计算分析了不同长度和根数的垂直接地体敷设降阻剂后对直流接地极各项电气性能参数的影响。结果表明,在下层土壤电阻率较高的地区,单纯采用垂直接地体对接地极的影响不大,而在此基础上使用降阻剂后 ...
李腾飞   +5 more
doaj  

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