摘要：框架结构中的现浇混凝土非承重墙体与主体框架之间通常采用销栓式钢筋连接设计成柔性连接的方式.已有研究表明,如果采取合理的销栓式钢筋连接节点的构造措施,现浇混凝土非承重墙体可以具备良好的变形能力并能够发挥积极的耗能减震作用.在此基础上,本文开展了3个墙体足尺试件的低周水平反复荷载试验,探讨了相关设计参数变化对墙体抗震性能的影响,研究结果进一步完善了采用销栓式钢筋连接的混凝土非承重墙体的设计方法.

摘要：To meet stringent requirements in vacuum and cleanness for semiconductor manufacturing, a new power drive module for Selective Compliant Assembly Robot Arm （SCARA） type robot has been developed for wafer-transfer. In order to obtain complete hermetic volume for higher vacuum and prevent leakage of hazardous gases, feedthrough motions involving transfer between the vacuum and motors are achieved by the use of metal bellows and magnetic coupling. An analysis of the coaxial-type magnetic coupling by employing the technique of current sheet model is presented. This approach is proved to be a precise and easy method. The construction of power drive module shows its advantage in maintaining ultrahigh vacuum and also enhances the efficiency for transporting the wafer, as compared with conventional design.

摘要：A double-dimensional big data assessment method on the characteristics of on-line taxi traffic operation is proposed to provide a scientific basis for carrying out the taxi industry reform and standardizing the on-line taxi hailing management work. Taking Shenzhen as an example, multi- source data such as on-line taxi license plate data, plate identification data and taxi （including on-line taxis） operation data are combined with the results of the stated preference （SP） survey on taxi operating characteristics to assess the overall operation characteristics of on-line taxis. The results show that the current on-line taxis in Shenzhen can be divided into three categories, that is, full-time on-line taxis, non- active on-line taxis and part-time on-line taxis, accounting for 4%, 55%, and 41%, respectively, of the total quantity. In terms of the characteristics of space-time operations, full-time on-line taxis have similar operating characteristics as those of traditional taxis; the operation of non-active on-line taxis and part-time on-line taxis coincides with commuting requirements during morning and evening peak hours. however, part-time on-line taxis operate for a much longer time period at night. Due to the convenient hailing and favorable price, on-line taxis have a significant impact on trip modes of citizens; and the substitution eflbct of on-line taxis on traditional buses and cruising taxis is obvious. It is beneficial for helping the government departments to objectively understand the development law of the on-line taxi industry and providing decision reference for the formulation of relevant management policies during the critical development stage of on-line taxi industry.

摘要：针对当前出租车浮动车数据覆盖范围和数据质量不足的问题,在现有数据特征分析的基础上引入百度手机导航和公交车浮动车导航数据,面向道路运行评估和拥堵管理提出了基于出行时间的交通运行指数算法和一种基于出租车、百度、公交车多源浮动车数据融合的道路交通运行评估方法,构建了多源数据融合规则和融合算法.以深圳为例进行了融合效果分析,结果表明所提出的多源数据融合方法效果显著,很大程度上提高了融合结果精度、数据覆盖率、数据可靠性和数据样本量,最后提出了主要应用方向和初步应用效果,能够为国内外城市开展交通运行评估工作提供借鉴.

摘要：目的:计算机辅助设计技术在医学领域得到了越来越多的应用,将计算机辅助设计技术引入到颅骨缺损的修复过程中,观察其修复效果。方法:选择2005-01/2006-12泸州医学院附属医院脑外科采用计算机辅助设计颅骨缺损成型技术修复颅骨缺损患者56例,对治疗均知情同意,且得到医院伦理道德委员会批准。所有病例经过CT扫描收集数据、缺损重建、钛网成型、模拟装配和手术修复等步骤完成修复过程;术后给以止血、抗炎、对症治疗;以手术切口一期愈合,无头皮下积血、积液,钛网无松动,外形美观为出院标准,出院随访6～18个月。结果:56例颅骨缺损患者全部进入结果分析,除1例术后并发短时脑脊液切口漏、1例发生硬膜外血肿外,无切口感染和头皮坏死,无颅内出血与术后癫痫,无修补材料外露、塌陷、松动等常见颅骨修补并发症发生;钛网与骨缺损区吻合良好,颅腔塑形满意,效果良好。结论:计算机辅助设计颅骨缺损成型技术简单易行,可有效减少术后并发症,提高修复效果。

摘要：For decades,plants have been the subject of genetic engineering to synthesize novel,value-added ***(PhAs),a large class of biodegradable biopolymers naturally synthesized in eubacteria,are among the novel products that have been introduced to make use of plant acetyl-CoA metabolic *** was hoped that renewable PhA production would help address environmental issues associated with the accumulation of nondegradable plastic ***,after three decades of effort synthesizing PhAs,and in particular the simplest form polyhydroxybutyrate(PhB),and seeking to improve their production in plants,it has proven very difficult to reach a commercially profitable rate in a normally growing *** seems to be due to the growth defects associated with PhA production and accumulation in plant ***,we review major breakthroughs that have been made in plant-based PhA synthesis using traditional genetic engineering approaches and discuss challenges that have been ***,from the point of view of plant synthetic biology,we provide perspectives on reprograming plant acetyl-CoA pathways for PhA production,with the goal of maximizing PhA yield while minimizing growth ***,we suggest genetic elements that can be considered in genetic circuit design,approaches for nuclear genome and plastome modification,and the use of multiomics and mathematical modeling in understanding and restructuring plant metabolic pathways.

摘要：SGS装置中合适的准直器结构可以提高系统的探测效率并降低串扰。运用MC法对不同形状和尺寸的准直器建模,模拟实际的SGS装置的测量过程。根据准直器的设计准则,对比了几种SGS准直形状的各自特点,并在实际的装置上验证了模拟计算的正确性,为SGS探测系统设计提供参考。

摘要：[目的/意义]探索运用游戏的核心机制即问题解决培养学生利用信息解决问题的能力,寻找实施问题解决游戏学习的有效方法和途径。[方法/过程]按照创设情境引入问题、分析问题形成策略、运用策略解决问题、反思总结的思路,针对图书分类排架知识的特点,设计分类问题、解密码锁问题、排序问题,置入一系列游戏情境中,并采用Flash制作《启航》小游戏。[结果/结论]问题解决游戏学习可以有效地促进知识的学习和运用,学习就发生在形成策略和反思的过程中,形式多样的支架可以有效地提供知识与信息。分析知识点的本质特征,设计体现这种特征的问题,把问题置入合适的游戏情境中,是设计面向问题解决的信息素质教育游戏的关键和核心工作。

摘要：This paper provides a comprehensive survey of the impact of the emerging communication technique, non-orthogonal multiple access （NOMA）, on future wireless networks. Particularly, how the NOMA principle affects the design of the generation multiple access techniques is introduced first. Then the applications of NOMA to other advanced communication techniques, such as wireless caching, multiple-input multiple-output techniques, millimeter-wave communications, and cooperative relaying, are discussed. The impact of NOMA on communication systems beyond cellular networks is also illustrated, through the examples of digital TV, satellite communications, vehicular networks, and visible light communications. Finally, the study is concluded with a discussion of important research challenges and promising future directions in NOMA.

摘要：设计并开发了一个基于网络结构,能够模拟电力运行方式的电力市场仿真器,并在.NET Frame- work上开发了此电力市场仿真系统。该仿真器采用了*** 2.0开发用户界面,C#作为编程语言以及采用SOL Server 2000作为后台数据库,这样的结构可以灵活地仿真及图形化显示电力库架构下的日前及实时市场运行行为,计算出市场结清价及结清容量。该电力市场仿真器利用了内嵌于.NET Framework的浏览器/服务器结构的卓越特性,这种结构可以实现基于开放标准和异构平台的分布式网络服务请求。并且,这种基于.NET平台构架的结构很适合用于地理位置相隔甚远的市场参与者(诸如市场运营商、发电商、用户等)进行信息传递。仿真实例显示,该仿真器具有很好的可扩展性和维护性。