Results 131 to 140 of about 38,634 (210)
Policy Studies Journal, EarlyView.ABSTRACT Forums play an important role in addressing interdependent policy issues, and their effectiveness depends on the continuous adaptation of forum rules. Yet, it remains unclear whether rules are exclusively used and adapted to improve forum effectiveness.
Ingo Bousema +3 more
wiley +1 more source
Gaoya dianqi, 2019 电力变压器绕组受短路电磁力作用后,可能出现可恢复的弹性变形或不可恢复的塑性变形。文中通过电磁-结构耦合有限元分析,对短路电流冲击作用下的变压器绕组弹、塑性变形特性进行理论分析和三维数值模拟,以揭示绕组弹性和塑性变形机理。首先通过有限元电磁计算分析了绕组内部短路电磁力分布,其中绕组线饼的周向电磁力分布不均是导致绕组变形的重要原因。在弹性变形计算的基础上,依据材料学的弹塑性变形分析理论,构建了绕组累积变形的量化分析模型,能够反映多次短路电磁力作用后绕组变形的累积效应。最后,以一台110 kV/25 000 ...
张海军 +4 more
doaj
Preparation of PDC-SiCNO ceramics with micro / nano structures [PDF]
, 2016 微/纳结构陶瓷如微执行器、微传感器、分子筛及催化剂载体等在军工航天、微电子、医疗设备、生物细胞学等各个领域获得了广泛的应用，并朝着精密化、图案化和微型化的方向发展。最近，国际上发展出一种新型有机聚合物前驱体热解法制备陶瓷的工艺(PolymerDerivedCeramics，简称PDC陶瓷)，具有分子可设计性、液相成型和低温烧结成型等特点，是制备微/纳米陶瓷结构的优良选材。嵌段共聚物自组装技术能构建出形态多样且长程有序的复杂微观结构，是制备高精度微观结构的主流技术。因此，本文以嵌段共聚物F127 ...
刘逾
core
There Is Always a Bigger Fish. Determinants of Power Perceptions in Swiss Biodiversity Policy
Policy Studies Journal, EarlyView.ABSTRACT The Advocacy Coalition Framework (ACF) views power as crucial in policy processes, but the nature of coalition power, its determinants, and how to empirically measure it remain understudied. In this article, we use a mixed method approach and social network analysis to explore power relationships in the biodiversity policy subsystem in ...
Alix d'Agostino +2 more
wiley +1 more source
Development and Optimization of a Cylindrical Laminated Methanol Steam Reforming Microreactor with Porous Metal as Catalyst Support [PDF]
, 2016 摘要 以低碳醇为燃料的制氢微反应器可为燃料电池等微小型电子装置提供安全可靠的在线氢源，从而引起世界各国研究者的广泛关注。本文以多孔金属材料为载体，设计制造了一种新型层叠式柱形甲醇水蒸气重整制氢微反应器，可获得较佳的制氢效果。论文主要研究内容如下： （1）载体结构甲醇水蒸气重整制氢微反应器设计 利用Solidworks软件设计了一种新型层叠式柱形甲醇水蒸气重整制氢微反应器。其中蒸发腔设计栅板结构，可有效增强反应溶液的汽化效果以及重整腔入口流体分布的均匀性。载体板采用多孔金属材料，降低加工成本 ...
张军鹏
core
Leveraging an Unhappiness Lens for Smarter Policies
Policy Studies Journal, EarlyView.ABSTRACT Traditional policy research has largely focused on enhancing happiness or well‐being, privileging positive outcomes as the primary metric of success. We argue that a systematic focus on the drivers of unhappiness—rather than solely on happiness—offers a complementary analytical framework that can uncover hidden societal deficits and broaden ...
Marine Coupaud +2 more
wiley +1 more source
An integrated framework for pull production control systems [PDF]
, 2009 Thesis (Ph. D. in Engineering)--University of Tsukuba, (A), no. 4937, 2009.3.25Includes bibliographical references (p.
Khojasteh Ghamari Yaghoub
core
Governing by Ambiguity: Sociotechnical Imaginaries of Platforms in China
Policy &Internet, Volume 18, Issue 2, June 2026.ABSTRACT Besides clear policy directives, the unresolved and open‐ended elements in policy communication also create discursive politics. This article argues that ambiguity in policy communication reflects the state's exercise of power within a fractured sociocultural landscape.
Fangyu Qing, Ngai Keung Chan
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2016 某十层的纯框架结构建筑检测结果表明,其弹性层间变形和弹塑性层间变形均不满足现行规范要求。采用防屈曲支撑对该结构进行了抗震加固设计,并基于SATWE软件分析了其小震下的结构性能。利用SAP2000软件,基于Pushover分析方法进行了抗震性能分析。由分析结果得知,防屈曲支撑增加了结构的抗侧刚度,增强了结构延性,改善了原结构薄弱层的抗震承载力。经防屈曲支撑加固后的结构,其变形特性仍与原框架结构类似。对实际工程所采用的防屈曲支撑进行了抗震性能抽检试验,结果表明,构件力学性能与设计数据吻合良好 ...
史先进
doaj
Policy &Internet, Volume 18, Issue 2, June 2026.ABSTRACT AI‐generated images have become so good in recent years that individuals often cannot distinguish them from ‘real’ images. This development, combined with the rapid spread of AI‐generated content online, creates a series of societal risks. Watermarking, a technique that involves embedding information within the content to indicate their AI ...
Bram Rijsbosch +2 more
wiley +1 more source