A revision of the study of values for use in magazine readership research.

The Allport-Vernon revision "was found to fulfill at least the minimum requirements of reliability." A pilot study made on 300 noncollege Ss revealed significant differences in reading interest for individuals of different values. The value scores effectively discriminated material chosen by different groups. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Side by Side: The Halftone’s Visual Culture of Pragmatism

Charles S. Peirce’s late-nineteenth-century semiotic theory has long been considered one of the key frameworks for analysing the photograph as a visual sign. This article, however, proposes a closer look at Peirce’s contemporaneous philosophy of pragmatism as a fundamental component of the visual, cultural, and intellectual context within which the photographic halftone first emerged. When, exactly, did it begin to matter if a photographic image made up of a certain arrangement of graphic marks was read differently from a photographic image made up of a different arrangement of graphic marks? Such pragmatist questions were crucial to the early reception of halftone reproductions, which were often integrated into illustrated magazines as simply one element within an already diverse array of graphic codes. Turning to Jacob Riis’s How the Other Half Lives (1890) as a case study, this article argues that reading the halftone as a chiefly photographic sign was not in fact an inevitable outcome of its introduction into the illustrated press in the 1880s and 1890s, but required instead a constant negotiation of both visual and conceptual imprecision – an imprecision eventually smoothed over in favour of an association of halftone technology with photographic ontology by the early twentieth century.     

某新型自动防暴枪自动机动力学仿真

为了解决某新型自动防暴枪霰弹弹匣供弹难的问题,设计了独特的供弹结构.进行了物理样机试制,开展了实弹试验,验证了结构设计的可行性和工作循环的可靠性.基于SolidWorks三维建模软件和ADAMS/VIEW多体动力学仿真软件,建立了该新型自动防暴枪的虚拟样机模型,进行了自动机工作循环的动力学仿真.对不同枪机框部件质量、导气活塞面积、自动机与机匣摩擦因数和复进簧预压力多种工况下的自动机工作特性进行了研究,为该防暴枪的进一步改进设计提供了依据.     

电火花小孔加工机床自动更换电极装置的设计

设计了一种电火花小孔机自动更换电极的装置,主要由主轴头快速接头结构和平置式链式电极库组成。通过设置链条张紧器和支撑部件,使链式电极库运行顺畅,并解决了移动单元一侧偏重的问题。该装置具有运行平稳、流畅、噪音小、结构简单等优点,还能提高电火花小孔机的生产效率。     

刀库合理布置在加工中心的应用

加工中心刀库的布置、刀库与主轴的配置影响机械手的动作、抓刀方式、机构的复杂程度、可靠性和换刀时间的长短,进而影响加工中心的工作效率.通过对加工中心换刀的分析和研究,提出了合理布置刀库的方式,以减少自动换刀装置(ATC)的动作和机构的复杂程度,提高加工中心的效率、可靠性和可维护性.     

某炸药库内爆作用下坑道内隔爆防护墙厚度估算

文章以某炸药库安全评估工程的实际问题为背景,考虑到周围墙体的限制,坑道内的冲击波得以加强,以及附近坑道施工不受到影响为原则,通过数值模拟和简单公式,分析了10 t炸药库的爆炸破坏作用,提出了内爆作用下隔爆防护墙厚度的估算方法,并研究在一定的冲击波作用下隔爆防护墙的厚度,为安全评估提供参考。     

《申报·建筑专刊》研究初探

1932年12月至1935年12月,中国近代著名报刊《申报》出版了一份综合性建筑副刊——《申报·建筑专刊》,专门刊载建筑设计、营造工程以及地产贸易等方面的内容。本文分析了《申报·建筑专刊》创办的时代背景、办刊宗旨与内容特点,并初步探讨了《申报·建筑专刊》的创办对中国近代建筑发展的意义。     

加工中心刀库系统可靠性强化试验方法

对某型号加工中心的刀库及机械手的早期故障进行分析后,假设了其主要的故障原因。为了加速试验过程并进一步验证假设的故障原因,设计了刀库系统的可靠性强化试验方案。首先选取了3个加速因子并确定了加速因子的大小,然后确定出试验的综合应力剖面,对刀库的3个位置的性能情况进行了监控。最后对试验发生的6次故障进行了分析,验证了假设的故障原因并提出对应的改进措施。