399 research outputs found

    Research on Present Development Situation and Non-Technical Influence on Beach Volleyball Movement of Xiamen

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    沙滩排球是起源于20世纪20年代美国加利福尼亚的一项以娱乐为初衷的运动。沙滩排球于1989年传入我国,1997年被列为全国运动会的比赛项目,随之在我国蓬勃地开展起来。特别是2008年北京奥运会上,我国女子沙排组合获得了一银一铜的优异成绩,为沙滩排球在群众体育运动中的开展做了良好的铺垫。 厦门市作为中国东南沿海的一个发达城市,无论是从所处地理位置、气候、适宜开展沙滩排球运动的场地条件,还是从人们的经济水平,参与运动的意识,开展运动的时间等方面,都具有很多开展沙滩排球得天独厚的优势。但有关厦门市沙滩排球运动的理论研究较少,并且对于厦门市沙滩排球运动发展的整体性研究尚未见资料显示。 为了使沙滩排...The Original intention of beach volleyball movement is entertainment, which is begin in California American in the 1920s. Then the beach volleyball movement became popular in American and all over the world soon. In 1989, the beach volleyball movement spread to China, it was became one of Olympic competitive events in 1997, and then the beach volleyball movement develop vigorously in China. The ex...学位:教育学硕士院系专业:体育教学部_体育教育训练学学号:2692007115214

    Research of High Precision Collection Instrument for Analog Signals Based on Modbus Protocol

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    论文以“广西雷平糖厂锅炉控制系统设计”项目为应用背景,该项目要求设计一种基于现场总线的锅炉实时控制系统。雷平糖厂原有的几套锅炉控制系统均以DDZ-Ⅰ、DDZ-Ⅱ型电动组合仪表来实现,这种常规仪表控制技术存在控制精度不高、系统波动性大、检测仪表数量多、维护成本高等问题。为此,需要一种新型的采集仪表满足系统设计的需要,本文工作重点是研制基于Modbus通讯协议的高精度模拟量采集仪表。该仪表采用美国CIRRUSLOGIC公司的24位高精度A/D转换器,能同时转换8路模拟量输入信号,减少了使用仪表的数量,提高了仪表的精确度;同时该仪表采用WGM12864BLCD显示模块,可以动态显示采集到的数据及运行...The paper takes a project as its application background.The project, named design of boiler control system for Guangxi Leiping sugar company, needs to design a real-time boiler control system based on fieldbus. The existing boiler control systems in Leiping suger company are worked out with DDZ-Ⅰ、DDZ-Ⅱelectro-motion assembled instruments. Several problems exist in this general instrument control t...学位:工学硕士院系专业:计算机与信息工程学院自动化系_系统工程学号:20033101

    歎異抄の人間学的考察

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    代理不可能性の原理

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    III-V CMOSフォトニクス・プラットフォーム上導波路型InGaAs受光器に関する研究

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    学位の種別: 課程博士審査委員会委員 : (主査)東京大学准教授 竹中 充, 東京大学教授 高木 信一, 東京大学准教授 八井 崇, 東京大学准教授 岩本 敏, 東京大学准教授 石川 靖彦University of Tokyo(東京大学

    教育学の体系についての試案

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    特集 教育学についてSpecial Section : On the Study of Educatio

    The Introduction CS5534 A/D Converter And Application Of It On High Precision Analog Signal Collection Board

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    CS5534是美国CIRRUSLOGIC公司推出的低噪声24位型A/D转换器。本文介绍该芯片的组成结构,功能及工作方式等特性,并将其应用于高精度模拟量采集卡的设计中;同时,文中给出采集卡的硬件电路设计和相应的C51软件设计。CS5534 is a Delta-Sigma Analog-to-Digital Converter which can achieve a low noise and 24bit performance. This paper introduces several features of the chip, such as structure, function and operating mode, and uses it in a high precision analog signal collection board; at the same time, the paper provides the design of hardware circuits and the C51 software.福建省青年科技人才创新项目资助,编号:2004J02

    Progress in the Study of Solid/Solid Interface between Lithium Electrode and Polymer Electrolytes in Lithium Polymer Batteries

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    综述了聚合物锂电池中锂/聚合物电解质电化学固/固界面的研究进展。通过与锂/液体电解质体系进行比较,简要介绍了在锂/聚合物电解质界面上发生的电化学反应、锂钝化层形成及其对界面反应的影响,并侧重讨论了传统电化学方法和谱学方法,特别是现场分析技术在电化学固/固界面研究中的应用。总结了锂/聚合物电解质界面的几种不同改善途径。Recent advance in the research of solid/solid interface between lithium electrode and polymer electrolytes(PE) in lithium polymer batteries is reviewed.Compared with Li/nonaqueous systems,the electrochemical reaction at the Li/PE interface and the influence of passivation layer on the electrochemical reaction are briefly introduced.The applications of different sophisticated electrochemical methods and spectroscopic methods,especially the in situ analysis techniques in Li/PE solid/solid system are discussed.In addition,different approaches for improving Li/PE interface include surface modifications of Li-metal in the literature are also summarized.国家自然科学基金项目(No.20473068,29925310);; 教育部霍英东优秀青年教师基金项目资
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