Results 41 to 50 of about 688 (120)
ABSTRACT Policymakers organize and frequently communicate safety net policies, such as eligibility guidelines around administrative categories. The potential effects on how these thresholds are communicated remain empirically unexplored. We examined if communication either in terms of the Federal Poverty Line (FPL)‐ or dollar‐form alters preferences ...
Simon F. Haeder, Donald P. Moynihan
wiley +1 more source
为实现油浸式电力变压器绕组运行温度的分布式测量,及早发现绕组异常温升等问题,文中提出了一种基于Raman光时域反射计(ROTDR)的变压器绕组温度测量方法。该方法通过在变压器绕组中预埋分布式光纤,并依据拉曼散射原理来直接测量绕组温度。设计并研制了敷设分布式光纤的电磁线和绕组模型,并根据测量要求对电磁线结构和绕组绕制工艺进行了改进,利用分布式光纤测温系统对敷设分布式光纤的电磁线温度传感性能和绕组模型进行了试验。试验结果表明:基于该方法的温度测量误差≤2℃,满足变压器绕组温度测量的要求 ...
张重远 +6 more
doaj
The Study on New Customer Information Management and Consolidation of DELL [PDF]
随着客户关系管理系统应用在企业中的普及,在成熟的技术支持下,企业能够获取的客户信息的数量在不停地增长,但同时,研究也表明,在当今的很多企业组织机构中,由于早期阶段的快速发展以及后期业务运营流程上的不完善,使得客户的信息数据质量状况其实并不理想,甚至令人难以接受。随着大数据时代的来临,这种困境越来越影响着企业的发展。因此,越来越多的企业开始关注客户信息的数据质量,如何有效地保证并提高客户信息质量成为了企业战略的关键。作为全球直销商业模式典范的戴尔公司,凭借着特殊的商业模式,使其直接拥有了大量的商业客户信息。
纪玫艳
core
A new beef: An analysis of discourse coalitions in the nascent cellular agriculture policy subsystem
Abstract A robust approach to examining the nature and influence of coalitions in the policy process is the Advocacy Coalition Framework (ACF), which is especially useful to study policy issues fraught with scientific and technical controversy. Yet, important gaps exist in ACF literature regarding nascent policy subsystems. Consequently, there is scant
Nikki Nadeau, Ramiro Berardo
wiley +1 more source
大型电力变压器绕组的固有振动特性影响其在短路冲击电流下的振动响应及抗短路能力。为了弄清楚固有振动特性与绕组机械参数间的关系,文中建立了计及压板和线圈的绕组轴向振动“质量—弹簧—阻尼”模型,提出了等效质量、刚度和固有振动特性的计算方法。在此基础上,分析了一台SFSZ8-40000/110变压器低压绕组的模态频率和振型,研究了垫块弹性模量、数量和端圈垫块厚度等因素对绕组固有振动特性的影响规律。研究结果表明,绕组各阶轴向振动模态频率之间满足倍数关系,各阶频率对应的振型为绕组不同位置线饼沿轴向的同向和反向振动 ...
刘力卿 +6 more
doaj
A Study on Heiner Müller’s Collage [PDF]
海纳•穆勒被后世誉为继布莱希特之后20世纪德国最重要的戏剧家,他对戏剧最突出的贡献是开创了“组合剧”的剧作法,并带动了剧场艺术的革新。“组合剧”选取历史事件、戏剧经典、社会新闻、荒诞想象等各种素材进行文本处理,置于同一舞台演绎,没有连贯的情节主线,无所谓高潮或突转,角色的塑造也是模糊残缺的,纷繁的场景看似独立而跳跃,实则彼此指涉,语言凝练含蓄,令观众对舞台产生思索。本文以穆勒的“组合剧”为研究对象,从其与德国戏剧文化传统的渊源、剧作思想和剧场形态三个方面进行分析。Heiner Müller ...
王良平
core
Abstract This article argues that social actors' media ideologies about digital interfaces are key to the enregisterment of online activities. Focusing on an online register emergent from user activities around Year, Hare, Affair (YHA)—a state‐aligned Chinese animation—I explore how different metadiscourses evaluate this register by entextualizing ...
Jiarui Sun
wiley +1 more source
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
The Functions and Mechanisms of Histone Demethylase JMJD1A in Urinary Bladder Cancer Development [PDF]
JMJD1A(JumonjiCdomain-containing1A),又名JHDM2A,KDM3A,是一种组蛋白去甲基化酶,可以特异性去除H3K9位点的一甲基化和二甲基化,在组蛋白甲基化修饰中起到重要作用。JMJD1A表达受到低氧诱导因子HIF-1α(hypoxia-induciblefactor1α)的调节,并且参与到肿瘤细胞对低氧环境的适应性调节过程中。 膀胱癌是世界范围内高发和高致死率的恶性肿瘤之一。已有报道JMJD1A在膀胱癌肿瘤组织中高表达,但是JMJD1A在膀胱癌的发生发展机制尚不清楚 ...
秦丽萍
core
Trump, Personalism, and US Administrative Capacity
ABSTRACT Donald Trump represents an extraordinary degree of personalism in American politics, especially given the traditional power and capacity of the Republican Party and American democracy. A lesson Trump drew from his first term in office is that he needed to better institutionalize mechanisms of personal loyalty to deal with perceived betrayals ...
Donald Moynihan
wiley +1 more source

