Results 101 to 110 of about 30,971 (191)
脊波导的功率容量、衰减常数和特性阻抗是其传输特性的重要组成部分。在日常应用中,脊波导元件必然会存在一定的形变。文章应用ANSYS建模与MATLAB软件相结合的方法计算了三角形脊波导错位和受力形变对其功率容量、衰减常数和特性阻抗的影响。结果表明,错位形变对三角形脊波导的衰减常数影响较小,而各项特性参数受底部形变影响较大,研究所得结果可为三角形脊波导广泛应用提供参考。
杨立坤, 陈小强
doaj
Tidal Asymmetry in the Xiamen Bay:Numerical Model Approach [PDF]
本文基于ROMS(RegionalOceanModelingSystem)建立厦门湾的三维水动力变边界模型,模拟厦门湾的水动力情况,并首次对厦门湾的潮流不对称现象进行了研究。厦门湾潮流的实测数据表明,湾内存在潮流不对称现象,猴屿站和鼓浪屿站最大涨落潮流速不一致。将模型结果与实测数据进行验证,结果表明模型能够很好的反映厦门湾内潮位和潮流的变化情况,并再现了猴屿站和鼓浪屿站的潮流不对称现象。 厦门湾为正规半日潮海区,M2分潮为主要分潮,由模型结果得到了厦门湾内M2、S2、K1 ...
刘勇
core
Coalition Opportunity Structures and Advocacy Coordination in Consensus and Majoritarian Democracies
ABSTRACT Research on advocacy coalitions suggests that belief homophily—the tendency of actors to coordinate based on shared policy beliefs—drives coalition formation. However, coalition opportunity structures, which are shaped by institutional contexts, may influence the extent to which belief homophily matters.
Keiichi Satoh +7 more
wiley +1 more source
On oil painting decorative language and its performance —— Discussion decorative works of Klimt, Schiele and Chagall and language performance as well as my graduation work [PDF]
本文简要介绍了有关装饰艺术的起源的几种观点,以及油画中的装饰语言的特征、形式、表现手法,还将其进行了简单的分类,通过对艺术家的优秀作品进行分析、研究,进一步了解装饰语言的具体应用手法以及其对现代油画发展的影响,以此让我们更清楚明了地认识和学习在油画创作中如何表现应用装饰语言。文中还将浅谈笔者的毕业创作的构思以及毕业创作中对装饰语言的运用。随着油画的不断发展,装饰语言的应用对油画的艺术风格和发展都产生了很大的影响。越来越多不同类型的装饰语言被应用于油画的创作中 ...
金倩倩
core
ABSTRACT Why did Australia go from the White Australia Policy, which excluded non‐whites, to institutionalizing multiculturalism policy in the 1970s? This question defies traditional political ideologies of the major political parties, which had long supported the White Australia Policy. This article is a rare empirical demonstration of the Five‐Thread
Julius C. S. Mok
wiley +1 more source
以国内首台1 000 kV特高压变压器现场绕组变形测量试验为例,介绍了采用频率响应法(FRA)和短路阻抗法(SCR)对特高压变压器绕组变形进行综合判断的情况,详细说明了2种方法的特点、现场试验技术和测量结果,有效提高了变压器绕组变形诊断的可靠性和准确性。
沈煜
doaj
Population genetic variation and symbiotic and associated bacteria diversity studies of bryozoan Bugula neritina based on high-throughput sequencing [PDF]
多室草苔虫是一种重要的药源生物,从这种生物体内提取出的多种草苔虫内酯被证明有着较强的抗癌活性,其中草苔虫内酯bryostatin1是治疗阿尔茨海默症和多种癌症的最有希望的药物来源,而草苔虫内酯bryostatin1的产生与多室草苔虫体内的共生细菌“CandidatusEndobugulasertula”密切相关。然而,国内学者从中国沿海的多室草苔虫中却一直未能成功提取出这种最具药用价值的草苔虫内酯bryostatin1 ...
李海
core
ABSTRACT Based on the Punctuated Equilibrium Theory (PET) and implementation research, this study proposes an extended conceptualization of policy punctuation that enables researchers to systematically include policy implementation as part of a punctuation. The key mechanisms underlying the PET, i.e., policy image and venue, information processing, and
Bettina Stauffer
wiley +1 more source
Emotion and the Advocacy Coalition Framework: An Affective Dynamics Perspective
ABSTRACT Despite extensive evidence that emotion and cognition are deeply intertwined, the Advocacy Coalition Framework (ACF) lacks an analytically independent emotional mechanism in its causal architecture—an omission that may be particularly consequential in policy subsystems structured around morally charged, identity‐laden policy disputes.
Moshe Maor
wiley +1 more source
为准确判断电力变压器故障后的绕组变形情况,笔者探究了频响法、短路阻抗法和绕组电容法综合判断变压器绕组变形的依据和规律。通过对故障变压器的理论分析和计算,结合实际的吊罩结果,证实了此3种方法的有机结合有助于准确分析和判断变压器绕组变形程度。
陈巧勇, 任红, 罗平, 王建强
doaj

