1,483 research outputs found

    Preparations and Structure Characterizations of Coatings with Water-absorbing Anti-fogging

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    汽车玻璃的面积约占汽车表面积的1/3,要求具有较好的光学性能、力学性能,同时还要求具备耐磨性能、耐热性能、安全性、密封性和隔音性能等,以保障乘员的安全。目前,汽车玻璃的发展方向主要有两个:一是提高汽车玻璃的安全性能,二是汽车玻璃的功能化。为了有效地改善车内的舒适性和提高汽车玻璃的功能,可以在保证汽车玻璃安全性的基础上附加调光、隔热、防眩、憎水、抬头显示、天线、光伏电加热等功能。 受环境温度和湿度的影响,汽车玻璃起雾是很常见的问题。起雾主要是因为当水汽接触到汽车玻璃后,由于玻璃表面温度较低,其水分的饱和蒸气压低于周围环境的饱和蒸气压,所以水汽就会在玻璃的表面聚集成水珠而形成雾。雾气使玻璃变得模...Automotive glass, which accounts for about 1/3 of automobile surface area, needs to meet optical properties, good mechanical properties, in the mean time, wear resistance, heat resistance, safety, sealing and sound insulation performance in order to guarantee the safety of the passengers. At present, automotive glass is mainly developed in two directions: one is to enhance the safety performance o...学位:工学硕士院系专业:材料学院_工程硕士(材料工程)学号:2072013115010

    Empirical Analysis on influencing factors of Real Estate Price Fluctuation in Different Areas of China

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    作为国民经济的支柱产业,房地产业的发展在城市化进程中具有不可或缺的重要作用,然而自2003年以来房价高涨成为全国房地产市场的一个重要趋势,因此探寻房价的影响因素具有重要意义。传统的研究方法往往不能解决内生性与不可观测的共同冲击问题,对影响因素的回归结果往往具有一定偏差。本文首先定性地描述了中国房地产价格与其增长率具有区域性差异的情况,并将中国按照经济地理方法分为东、中、西部,进而运用CCE方法在有效处理内生性问题的前提下,对中国31个省、市、自治区内共计287个城市14年的面板数据进行了实证分析。实证结果表明东、中、西部的房价影响因素存在较大差异,且相同的因素在不同地区具有不同的影响方式,不同...As a pillar industry of the national economy, the real estate has played a crucial role in the process of urbanization. However, the increase of property price has become an important tendency since 2003, which brings the great significance of searching the factor that impact the property price. Traditional research method can’t solve the problem of endogenous and invisible common factors which wo...学位:资产评估硕士院系专业:经济学院_资产评估硕士学号:1552014115190

    Structure and Electronic Properties of Single Walled Nanotubes from AlAs(111) Sheets: A DFT Study

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    通过卷曲立方AlAs(111)单层片(sheets)构造了一系列(n,0)和(n,m)一维单壁纳米管。用周期性密度泛函理论(DFT)计算并比较了; 不同类型AlAs纳米管在几何结构、能量及电子性质等方面的差别。计算结果表明锯齿型和椅型纳米管应变能均为负值,并随着管径变大而逐渐变小。然而,它们; 的带隙相当不同:椅型纳米管为间接带隙,随着管径的增大而带隙减小;锯齿型纳米管为直接带隙,管径为1.87 nm时存在着一个极大带隙值(2.11; eV)。这种不同主要源于锯齿型纳米管铝原子间3p轨道的耦合贡献。A series of AlAs nanotubes (NTs) can be formed by rolling up two dimensional periodic (111) single layer sheets, namely (n,0) and (n,m) nanotubes. Optimized parameters of the atomic arrangement, energy levels and electronic structure of corresponding nanotubes of different types were calculated and compared by the density functional theory (DFT) method. The calculated results showed that strain energies (E-s) are negative over most of the diameter range for the (n,0) and (n,m) series, indicating that these NTs are more stable than a planar AlAs(111) single layer. The strain energy gradually decreases with increasing diameter. The calculated electronic band structures and density of states profiles reveal that the indirect band gaps (E-g) of armchair AlAs nanotubes gradually decreases with increasing diameter, which is distinct behavior from the zigzag nanotubes. The zigzagAlAs nanotubes feature a direct Eg with a peak value (2.11 eV) for a tube of radius 1.87 nm. The origin of the differences in band gaps could be attributed to the p-p coupling interaction between Al 3p orbitals in the conduction band of the AlAs zigzag nanotube.国家自然科学基金(21573182)资助项

    On the Application of Criminal Reconciliation ——Taking Economic Investigation Cases from Public Security Bureau as Example

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    新修订的《刑事诉讼法》确立了“当事人和解的公诉案件诉讼程序”,体现了保护被害人利益和构建和谐社会的的现实需求和促使加害人回归社会的恢复正义刑罚观转变,极具现实意义。但更现实的是,新刑诉法将于2013年1月1日起施行,在司法实践中如何把握刑事和解的适用范围和适用程序成为当务之急。正是有感于此,本文以刑事和解的适用问题为探讨对象,同时基于笔者的经侦民警身份,本文将以经侦案件为主来探讨刑事和解在公安侦查阶段的适用问题。 本文分为四个部分。第一部分介绍刑事和解兴起的社会背景,此部分通过对西方刑事和解制度源起和发展的追溯,及对刑事和解理论基础的分析,意识到产生于刑罚观由报复正义向恢复正义的转变,对被害...New Criminal Procedure Law of People’s Republic of China establishes “the proceeding procedure of public prosecution regarding the reconciliation of parties concerned”. The procedure has far-reaching effect. It reflects the need to protect the victims’ interests and construct harmonious society, and accelerates the offenders’ reintegration to the society and restoration of their outlook on justice...学位:法律硕士院系专业:法学院法律系_法律硕士(JM)学号:X200912011

    “善”的诠释——浅析可持续性简约住宅空间设计

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    现在很多建筑师、工程师、规划师、研究员和客户都开始注意从战略上考虑住宅的环保要求,特别是在家庭住宅领域,不再像以前过分简化地将绿色环保理解为仅仅用绿色建材。他们逐渐认识到住宅是人们延伸的生活圈,是一致的、完整的生活系统。因此,可持续性建筑除了实用性和伦理性之外,更呈现了美观性的特点

    Empirical Study on Tax Structure and Economy Growth of China

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    税收收入与经济增长是国民经济的重要指标,也是经济运行状况的综合反映。经济增长的速度、规模和质量决定税收收入增长的速度、规模和质量,税收收入总量、构成及其税负水平对经济增长又会产生很大的反作用。因此,保持税收收入与经济增长协调同步,是经济运行当中值得深入研究的重要课题。 本文在税制结构与经济增长的实证研究中以年度数据为基础,对1994年至2006年全国及东、中、西三大地区经济增长的因素进行实证分析。根据实证分析结论,提出了自己的观点和政策建议。全文首先具体分析我国税制结构的现状,通过比较分析指出我国现行税制结构有待进一步完善之处,然后对税制结构如何作用于经济增长的机制进行分析,为实证研究部分提...Tax revenue and economy growth are two important indices for national economy, and they also reflect the comprehensive status of economy operation. The rate, scale and quality of tax revenue is determined by the rate, scale and quality of economy growth, while the total amount, composition of tax revenue and burden of tax also reacts to economy growth. Therefore, keeping the coordination and synch...学位:经济学硕士院系专业:经济学院财政系_公共经济学学号:2005130087

    生态化景观系统的多维思考

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    在生态问题面前,人类的力量是极其微弱的,需要全民积极地参与。本文重点从人对自然的态度方面讨论生态设计问题。端正人与自然的道德关系和伦理关系是当前解决生态问题最有意义的做法之一

    ARCHITECTURAL DESIGN FOCUSED ON CLIMATE IN SOUTHERN FUJIAN

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    建筑是人类适应自然的庇护所,是应对气候的产物,也应是和人类一起共融于自然的。但是近些年来,伴随人类社会的进步,也带来了很多环境危机,现在人类对地球造成的冲击是史无前例的。这些问题是人口膨胀、消耗能量、技术质量三者乘积得共同产物。而建筑能耗占了所有能耗的一半,因此重新思考建筑与自然的关系、研究建筑应对气候的设计方法,走可持续发展的道路对当今世界是有重要意义的。 国家对海西建设的关注,势必会带动闽南地区的发展,带来大量的建设。因此,针对闽南地区特殊湿热气候环境,研究应对气候的建筑设计策略也有着重要的现实意义。 本文从研究建筑与气候的关系入手,针对闽南的地域气候特征,先分析和探索了闽南传统建筑的...Architecture, as the human sanctuary against to complicated natural conditions, is born in struggling with the changing climate, and should be coexist with the Nature harmoniously. In recent years, the impact of human activities on earth is unprecedented, the development of human society concomitance with many problems such as population explosion, resources consumption and technology progress ha...学位:建筑学硕士院系专业:建筑与土木工程学院建筑系_建筑设计及其理论学号:2522007115133

    The Color Gamut Measurement and Color Purity Calculation of Monitor Display

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    显示器作为一种信息传播的媒介,已经成为了人们生活中必不可少的科技产品。如何定量地描述和评价显示器的显示效果,一直是人们关心的问题。随着色度学理论和测量仪器的发展,为显示器的测量提供了理论和实验基础。本文主要从显示器的色度学特征入手,围绕其色域、色纯度等显示器特征参数展开研究,具体内容包括以下几个方面: 1、简单介绍了显示器的发展历史和显示器测量的研究背景,并且对未来显示器和显示技术的发展进行了阐述,提出了显示器光学性能测量的重要性。 2、从色度学基本原理出发,对显示器光学性能测量的基本原理进行阐释,并对显示器光学性能特征参数对应的色度学系统计算原理、计算方法等方面作了简单介绍。 3、提出...As an information dissemination medium, monitor display has become the indispensable technology product in people’s lives. How to describe and evaluate the quality of monitor display becomes important. The developments of colorimetry theory and measurement instruments provide the theoretical and experimental basis for monitor display measurement. In this thesis, from the chromaticity characteristi...学位:理学硕士院系专业:物理与机电工程学院航空系_无线电物理学号:1982009115255

    The Expected Calendar Effect in Chinese Stock Market: Evidence Based on the Inequality Test

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    股票收益中存在的“日历效应”对于资本市场理论以及资本市场的有效性有着重要的意义和影响,而关于我国股票市场中是否存在周内效应和节日效应等日历效应的研究并没有得出一致性的结论。本文在前人研究的基础上,指出现有文献存在的局限性,并首次从预期的角度出发,系统地考察了预期周内效应和预期节日效应在我国股票市场上的表现。 本文选取上证综指和深圳成指作为研究样本,采用不依赖于具体模型的不等式检验方法对沪深两市中可能存在的预期周内效应和预期节日效应进行检验。结果显示,预期周内效应在沪深两市并不显著,但是两市均存在一定形式的预期节日效应。具体来看,对预期周内效应来说,沪市中预期的最低收益率最有可能出现在周二...The calendar effect of stock return has significant effects on the Theory of Market Efficiency. However, whether there is calendar effect like the day-of-the-week effect or the holiday effect in Chinese stock market is still an open question. In this paper, I point out the limitations of the existing literatures, and for the first time examine the day-of-the-week effect and the h...学位:经济学硕士院系专业:王亚南经济研究院_金融学(含保险学)学号:2772011115269
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