Mic Check: Occupy Wall Street and the Space of Audition

As used by Occupy Wall Street, the human microphone played a central role in the formation of an auditory space that was animated by the principles of direct democracy that guided the movement. However, the practice also allowed the occupiers to confront and subvert the monopoly on amplified public speech that the government of the City of New York had possessed for nearly eighty years. This paper presents a brief history and analysis of the city's regulation of sound devices, locating the human microphone in a larger struggle over the rights to public speech and assembly.     

Learners' eye movements during construction of mechanical kinematic representations from static diagrams

We investigated the influence of numbered arrows on construction of mechanical kinematic representations by using static diagrams. Undergraduate participants viewed a two-stage diagram depicting a flushing cistern (with or without numbered arrows) and answered questions about its function, step-by-step. The arrow group demonstrated greater overall accuracy and made fewer errors on the measure of continuous relations than did the non-arrow group. The arrow group also spent more time looking at components relevant to the operational sequence and had longer first-pass fixation times and shorter saccade lengths. The non-arrow group made more saccades between the two diagrams. Analysis of transition probabilities indicated that both groups viewed components according to their continuous relations. The arrow group followed the numbered arrows whereas the unique pathway of the non-arrow group was to compare the two diagrams. These findings indicate that numbered arrows provide perceptual information but also facilitate cognitive processing.     

汽车传动轴零件的标准化设计

传动轴是汽车传动系中传递动力的重要部件,汽车传动轴产品的标准化对于汽车传动轴制造企业有较强的实用性.本文就传动轴标准化设计的必要性和可行性发表一些看法.     

冷轧带钢的连续式浅槽盐酸酸洗新工艺

本文阐述新设计的连续式浅槽盐酸酸洗机组,对这一新技术的工艺特点,主要设备的选型等做了详细的介绍。     

历代有关张家口的咏长城诗作赏析

介绍分析历代有关张家口的咏长城诗词歌赋的创作及产生背景、思想内容和艺术特点,从一个侧面挖掘了张家口地域文化的内涵。     

陕鄂边界古长城考实

陕鄂边界古长城的建筑时代、历史背景与地理分布长期不明.通过分析各种历史文献记载,结合实地调查资料,对这道古长城的走向、形制和建筑方法作了探讨,断定其营造年代是清朝嘉庆五年(公元1800年),同时阐明长城线上诸关隘的具体位置.上述问题的澄清对于研究长城史学和陕西历史军事地理均具重要的现实意义.     

随机变量的分布函数求解方法的讨论

结合实例归纳了求离散型、连续型、特殊型三种随机变量的分布函数求法,使问题易于理解,计算更为简便。并对这三种随机变量的分布函数进行了对比,讨论了其本质、表达形式等方面的异同。     

万里长城北京段的建造艺术

北京地区的长城建造得最牢固也是至今保存比较完好的地段。本文从布局、城墙、关城、城台、烽火台、排水系统、摩崖石刻及石雕等诸多方面论述其建造艺术,期望人们能像保护艺术珍品一样保护我们的长城。     

地下结构抗震课程教学实践与探索

《地下结构抗震》课程是城市地下空间工程专业一门重要的专业课,是理论与工程实践密切联系的一门课程,要求学生通过学习,能够掌握地下结构抗震研究发展现状及趋势、地下结构的典型震害机理、地震工程的基本知识、地下结构抗震的设计理论和方法。本文通过对比分析“地下结构”和“地面建筑结构”的异同以及本科生先修专业基础课方面的不足,提出针对《地下结构抗震》课程的讲授方法,从形象化展示地下结构与地面建筑结构的区别;教学重点和教学方法调整;培养学生解决实际工程能力;坚持教学与科研一体化,相互促进、协调发展等四个方面详细展开,旨在改革传统的教学方法,有效提高教学质量。     

建设世界级的实验室

访谈中介绍了在世界垂直岩石覆盖最深的中国锦屏地下实验室建设过程中的体会,强调实验室建设是个系统工程,对建设世界一流大学至关重要,我国要根据实际情况建设世界级的实验室.