基于自主版式技术的结构化工卡系统设计与实现

为了解决传统纸制介质信息存储困难、维护效率低下等问题,在研究S1000D规范下的交互式电子技术手册(IETM)的基础上,文中提出将自主版式技术应用到航空维修工卡系统的设计上,从而实现结构化工卡数据模型的存储与显示。     

民间工艺对中国艺术设计史研究的意义

中国艺术设计史研究是对于中国造物行为中设计思维的仔细梳理与深度探索,中国传统造物的纷杂景观形成了设计学科框架建立的复杂性,造物行为的平民性也导致了中国艺术设计史研究的宽泛性,对于传统民间工艺的新型探究对中国艺术设计学科的确立与发展有着重要的当代意义。     

A simplified method for predicting the stress concentration in notches from experimental stress data

This paper describes a simple procedure to obtain very reliable estimates of the stress concentration at the root of a notch using only data from points beneath the notch root along its axis of symmetry. The advantages of the method are (i) data from only a few points are needed, (ii) the necessary computations require only a hand held calculator, (iii) inaccurate data becomes quite apparent to the analyst, and (iv) random experimental errors are largely compensated.     

细胞形态参数的全自动检测

全自动检测能使人工干预减少到最低程度，从而明显地提高检测速度。当摄像机摄取一幅细胞的模拟图象并被转换成其一幅的数字图像，该幅数字图象再经过阴影消除、二值化和边缘检测等几个预处理步骤时，细胞的边缘就能被显示出来，边缘上所有象素的坐标也就能被本文所介绍的方法进行检索。根据上述几个处理步骤，就能获得诸如面积、周长、长（短）轴、形状因子等细胞的形态参数。     

手动变速箱rattle噪声的仿真和试验

针对手动变速箱的振动和噪声直接影响整车NVH性能的问题,简述手动变速箱rattle噪声的产生机理,将非承载齿轮敲击过程理解为由离合器、承载齿轮、差速器和车身等组成的扭振系统和非承载齿轮副敲击系统相互作用的结果.用AMESim建立传动系统敲击模型并通过试验验证模型的准确性,重点分析离合器参数(刚度和迟滞阻尼)以及齿轮齿隙对齿轮敲击力的影响.结果表明,利用这些参数对变速箱rattle噪声加以控制可达到预期的效果.     

Extended Process to Product Modeling (xPPM) for integrated and seamless IDM and MVD development

This paper proposes a new extended Process to Product Modeling (xPPM) method for integrated and seamless information delivery manual (IDM) and model view definition (MVD) development. Current IDM development typically uses Business Process Modeling Notation (BPMN) to represent a process map (PM). Exchange requirements (ERs) and functional parts (FPs) specify the information required when information is exchanged between different activities. A set of information requirements, specifically defined as a subset of Industry Foundation Classes (IFC), is called an MVD. Currently however, PMs, ERs, FPs, and MVDs are developed as separate documents through independent development steps. Moreover, even though ERs and FPs are designed to be reused, tracking and reusing the ERs and FPs developed by others is practically impossible. The xPPM method is proposed to provide a tight connection between PMs, ERs, FPs, and MVDs and to improve the reusability of predefined ERs and FPs. The theoretical framework is based on the approach of the Georgia Tech Process to Product Modeling (GTPPM) to suit the IDM development process. An xPPM tool is developed, and the validity of xPPM is analyzed through the reproduction of existing IDMs and MVDs. The benefits and limitations of xPPM and lessons from the applicability tests are discussed.     

光面爆破技术在人工挖孔桩中的应用

通过某综合大楼人工挖孔桩爆破技术的实践，阐明了光面爆破技术在小口径井中应用的适用性、可行性。     

Frequency-dependent performance and handedness in professional baseball players (Homo sapiens).

I used data on handedness and pitching and hitting performance in annual cohorts of professional baseball players (1957-2005) to test the hypothesis that handedness among pitchers was subject to negative frequency-dependent selection. As predicted by this hypothesis, right-handed pitchers were more successful (i.e., opposing batters hit more poorly against them) when they were relatively rare in the population. Contrary to the predictions of this hypothesis, however, left-handed pitchers were more successful when they were relatively common. Both right- and left-handed batters performed better in years dominated by right-handed pitchers, despite the fact that right-handed batters perform relatively poorly against right-handed pitchers. I suggest that batters form cognitive representations based on pitcher handedness, and that these representations are strengthened by repeated exposure or priming. When the pitcher handedness polymorphism is more balanced (e.g., 67% right-handed, 33% left-handed), these cognitive representations are less effective, which leads to decreased batting averages and improved performance by all pitchers. Furthermore, these cognitive representations are likely to be more critical to the success of right-handed hitters, who have reduced visuomotor skills relative to left-handed hitters. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

美国家电警告标语法规解读

家用电器使用不当会造成人员伤亡或者火灾等危害,因此制造商会在产品本体和说明书里加入一些警告标语,以警示用户比较容易忽略,有可能引发意外的操作;本文对美国法规ANSI_Z535中,家电产品警告标语进行了详细解读,以供相关从业者参考。     

广州会展中心二期工程基础设计

广州会展中心二期工程由于占地面积大,覆盖区域内基础持力层埋深变化大.文中根据上部结构的荷载大小以及岩面的不同埋深,综合考虑经济因素,采用了不同的基础形式,并在人工挖孔桩的施工中引入了水泥搅拌桩护壁的方法,取得了良好的效果,可为同类工程设计提供借鉴参考.