偏见与认同:从“索头”称谓论拓跋氏的族别抉择

From the widely used words “cable prisoner” for the Tuoba Clan in the Eastern Jin and Southern and Northern Dynasties, the process of accepting “Xianbei” for the Tuoba Clan was a subjective process of identity Choice. At that time, the Murong clan were generally accepted as the orthodoxy of Xianbei clan while “cable prisioner” as unorthodoxy. This kinds of discrimination prompted the ethnic identity     

视频电缆传输中的干扰原因及解决措施

视频电缆传输中的干扰,是直接影响视频信号质量的重要原因,是视频工程中最棘手的问题。本文分析了视频电缆传输中的两个主要因素:中波电台干扰与50HZ电流干扰,阐述了四种有效抑制干扰的措施。     

无粘结部分预应力混凝土斜弯板桥非线性有限元分析

建立了八结点中厚板等参分层有限元模型,对无粘结部分预应力混凝土斜弯板桥进行了非线性有限元分析,并与试验结果进行了比较,二者符合较好。     

Anchors,Habitus, and Practices Besieged by War: Women and Gender in the Blockade of Leningrad

As war challenges survival and social relations, how do actors alter and adapt dispositions and practices? To explore this question, I investigate women's perceptions of normal relations, practices, status, and gendered self in an intense situation of wartime survival, the Blockade of Leningrad (1941–1944), an 872‐day ordeal that demographically feminized the city. Using Blockade diaries for data on everyday life, perceptions, and practices, I show how women's gendered skills and habits of breadseeking and caregiving (finding scarce resources and providing aid) were key to survival and helped elevate their sense of status. Yet this did not entice rethinking “gender.” To explore status elevation and gender entrenchment, I build on Bourdieu's theory of habitus and fields to develop anchors: field entities with valence around which actors orient identities and practices. Anchors provide support for preexisting habitus and practices, and filter perceptions from new positions vis‐à‐vis fields and concrete relations. Essentialist identities and practices were reinforced through two processes involving anchors. New status was linked to “women's work” that aided survival of anchors (close others, but also factories and the city), reinforcing acceptance of gender positions. Women perceived that challenging gender relations and statuses could risk well‐being of anchors, reconstructing gender essentialism.     

增设破坏海底电缆和管道罪之必要性

为切实履行中国作为《联合国海洋法公约》缔约国的义务,对中国惩治破坏海底电缆和管道罪的相关法律进行探讨,指出鉴于中国履行有关国际公约的需要、中国适用国际公约的方式、刑法的扩张解释的局限性、配套法规刑事责任的缺失及现实的需要,刑法有必要增设破坏海底电缆和管道罪。     

Genderacing immigrant subjects: ‘anchor babies’ and the politics of birthright citizenship

Birthright citizenship is often a subject of important national debates on immigration. From a historical perspective, the influx of Mexican and Chinese immigrants to the United Stated has elicited politically charged efforts to deny the right of US citizenship to their children. Based on a review of popular discursive frames concerning the politics of birthright citizenship, this essay identifies and critiques the arguments from both ends of the political spectrum. We conclude that, by and large, the substance of their legal and philosophical arguments is old, hackneyed responses from decades ago. However, on many symbolic levels, the current rhetoric is quite uncharacteristically caustic, with a focus on racialized and gendered discourses among nationalist groups. We seek to explain why this is the case. Framed as ‘genderacing immigrant subjects’, this essay examines the politics of naming (or nomenclature) through the construction of the racially gendered referent in public discourse, thereby ascribing socially resonant meanings that naturalize a call for draconian policy measures in order to socially engineer the national body.     

基于一阶优化方法的钢 混凝土组合索塔锚固区结构设计

研究了斜拉桥内置式钢锚箱钢 混凝土组合索塔锚固区的结构优化设计。建立以索塔锚固区典型节段的建造成本和水平承载力为综合目标的多目标优化模型,以索塔混凝土塔壁的厚度、钢锚箱侧板尺寸、塔壁配筋为设计变量,建立设计变量与满足塔壁裂缝宽度、塔内钢筋配筋率、钢锚箱屈服强度要求的状态变量之间的约束关系,采用一阶优化分析方法确定钢 混凝土组合索塔锚固区最优结构尺寸,得到了钢 混凝土组合索塔锚固区设计的最优方案。优化结果显示：针对索塔锚固区的钢锚箱侧板与混凝土塔壁形成的组合结构承受斜拉索水平力的特点,建立以建造成本和水平承     

气锚分气效率的实验研究

为定量研究流动参数对气锚分气效率的影响,设计加工了实验用的气锚和相应的配套装置,对流动速度和气液比这两个影响气锚分气效率的重要因素及流体在气锚中的流动特点进行了研究。实验结果表明：随气液比的增大,分气效率增大,但当气液比大于0.75时,分气效率受气液比影响不再明显;分气效率随流速的增大而增大,当流速较小时,由气液比的不同引起的分气效率的差别比较大,而随着流量的增大,这种差别呈逐渐缩小的趋势。理论计算与实验结果比较,验证了实验结果的正确性,对气锚分气效率的定量分析具有借鉴意义。     

一种微波波导电缆拉制机用计算机控制系统

针对一种自行研制并投入实际应用的椭圆波导拉制机用计算机控制系统,介绍了其系统结构设计、功能设计与有关软、硬件的具体实现方法。该系统在单片机控制系统的控制下,自动完成椭圆波导电缆的拉制。经过试运行表明,系统能满足设计和使用要求。     

面向损伤识别的独塔斜拉桥模型的设计与分析

模型试验方法是桥梁结构损伤识别研究的一种重要手段。以某虚拟的独塔斜拉桥为原型,面向损识别设计制作了独塔斜拉桥试验模型。试验模型各主要构件（主梁、主塔、斜拉索）均独立加工制作,其中主梁选用铝合金材料,截面采用箱形,划分为不同长度的阶段,各节段均采用螺栓连接。通过改变节段板厚的方法实现主梁不同损伤程度的模拟,不同位置的损伤通过更换不同位置的板厚实现,从而方便的实现了模拟模型斜拉桥主梁的各种损伤状态。采用特殊的设计实现了斜拉桥结构索力的实时测试。对模型进行了静态试验,并与有限元模型计算的结果进行了对比分析。试验研究与数值分析为今后的损伤识别研究奠定了基础。