Results 31 to 40 of about 1,186 (123)
Dianci bileiqi, 2016 110 k V同塔六回输电线路易受雷击,且已有防雷措施不能有效降低反击跳闸率,为提高同塔六回输电线路反击耐雷水平,基于目前输电线路防雷方法提出一种可显著提升反击耐雷水平的组合措施。首先,基于表征输电线路反击耐雷性能的关键参数计算方法,建立110 k V同塔六回输电线路反击耐雷性能仿真研究模型。然后,对未采取防雷措施、架设耦合地线、配置避雷器、同时架设耦合地线与配置避雷器,这几种不同措施分别进行仿真分析。结果表明:兼顾考虑维护难易和经济成本 ...
王育飞 +5 more
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, 2012 《个人番号》(又译《死亡倒计时》)与《密码疑云》塑造了“邦德斯基“的形象,试图颠覆007电影中的“俄罗斯坏蛋“刻板形象。“邦德斯基“可以视为对好莱坞东方主义观念的反击,但是,这种反击是表面化的,并没有触及产生东方主义观念的思维模式。“邦德“与“邦德斯基“看似相反,实则诞生于相同的“敌人/我们 ...
周湘鲁
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Review of Policy Research, Volume 42, Issue 4, Page 1050-1075, July 2025.Abstract This paper analyzes the causal relationship between the carbon tax's revenue recycling measures and political acceptability. The Irish carbon tax reform of 2019 forms the basis of the study. The findings are based on deductive content analysis and semi‐structured, elite interviews with key politicians, climate policy advisors, and other ...
Daniel Muth
wiley +1 more source
Dianci bileiqi, 2018 220 kV及以上线路常用防雷措施是安装避雷器,需要分析线路遭受雷击后避雷器能量吸收情况以达到合理防护效果。利用EMTP软件搭建220 kV输电线路模型,考虑杆塔接地装置冲击特性,比较线路发生雷击反击和绕击时避雷器的残压与通流,讨论改变杆塔接地装置尺寸、线路档距、线路工作电压相位角等因素对避雷器吸收能量的影响。分析结果表明:线路发生反击时,避雷器残压与通流波形振荡不如绕击时剧烈,吸收的能量也远低于绕击;反击时,避雷器吸收的能量随着接地棒长度的增加而降低,而绕击时,吸收的能量随着接地棒长度的增加而增大 ...
曹冰, 任全会, 肖扬
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Policy Studies Journal, Volume 53, Issue 2, Page 463-479, May 2025.Abstract Policy process theories posit that focusing events can trigger significant shifts in public attention and policy preferences, thereby reshaping public agenda setting. Prior studies, however, have not clearly defined the scope of public opinion changes induced by these focusing events, leading to inconsistent empirical findings. This study aims
Youlang Zhang, Xinsheng Liu
wiley +1 more source
国际金融危机背景下中国遭受反倾销及其应对特征研究 [PDF]
, 2011 受国际金融危机影响,国际贸易保护主义抬头,中国遭受反倾销形势严峻,严重影响中国的出口贸易。本文应用引入执行率,反倾销对称率及反倾销强度指数三个指标,从中国遭受反倾销及其应对反击的总体特征、产品结构及其国别结构三方面进行了分析,发现国际金融危机下,国外对华实行有针对性集中贸易反倾销攻击,借以转嫁国内经济危机。相对而言,中国没有充分对等地运用反倾销贸易保护手段。本文还提出了相应的政策建议 ...
周辉莉
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Social protection and resilience in protracted crises
International Social Security Review, Volume 78, Issue 2-3, Page 173-190, April-September 2025.Abstract This article critically examines perspectives on social protection’s role in strengthening resilience capacities in protracted crises – contexts where conflict and displacement persist for five years or longer. These crises shape how stakeholders navigate their mandates to provide support, while influencing how affected communities seek to ...
Carolina Holland‐Szyp, Jeremy Lind
wiley +1 more source
Dianci bileiqi, 2015 采用ATP/EMTP软件对猇亭地区220 k V输电线路建模,通过软件仿真,分析了避雷器安装方式及工频相位角对线路反击耐雷性能的影响。利用两者对线路反击耐雷性能的影响,提出了两种新方案,并针对雷击杆塔这种情况,仿真分析了原方案及两种新方案的反击耐雷性能及高电位转移后对相邻杆塔的影响。结果表明:方案二的反击耐雷性能好,而且高电位转移现象轻微,不威胁相邻杆塔的安全运行。
高广德 +4 more
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European Policy Analysis, Volume 11, Issue 1, Page 114-137, Winter 2025.Abstract In Europe, and specifically in countries bordering the Baltic Sea, preparedness issues have moved up the policy agenda since Russia's 2014 and 2022 invasions of Ukraine. “Ordinary people” are encouraged to prepare for crises—be it through stockpiling food at home, fact‐checking information, or signing up for military training.
Alexandra M. Friede
wiley +1 more source
Dianci bileiqi, 2019 雷击是引起输电线路跳闸的主要原因之一。加装线路避雷器是根治输电线路雷击跳闸的有效手段。以福建电网220kV卓旧I路为例,建立了反击计算模型,对比了不同避雷器安装方式对典型杆塔及其相邻杆塔反击耐雷水平和反击跳闸率的影响,得到了线路避雷器的保护作用范围,并据此提出了避雷器安装布点策略:优先考虑连续多基杆塔反击跳闸率为C级或D级的情况,结合线路档距制定不同的安装方案;对于杆塔反击跳闸率为C级和D级,相邻杆塔未达到C级或D级的情况,C级杆塔安装一相避雷器,D级杆塔安装两相避雷器。基于提出的避雷器安装布点策略 ...
许军 +4 more
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