383 research outputs found
Research and Design of Campus Light Blog System Based on ASP.NET
轻博客是继论坛、博客、微博之后出现的第四种WEB交流方式,轻博客系统可以针对不同用户提供个性化服务,为大家营造一个良好的网络沟通环境,因此研究和开发校园轻博客系统对丰富校园生活,推广校园文化有着非常重要的意义。 本文对当前轻博客的现状及发展状况进行了分析,对系统的整体架构进行了深入研究,系统采用了ASP.NET三层架构,实现了逻辑处理与数据访问的分离,这种体系结构降低了层与层之间的依赖性,使项目结构更清楚,分工更明确,扩展性更强,有利于后期的维护和改进。界面设计遵循可用性、合理性、美观性和简洁性的原则,结合JavaScript脚本和CSS样式表实现网页的特效,提高页面的可观性。对校园轻博客系...Light blogging is the fourth WEB communication way after BBS, blog andmicroblog. Light blogging system can provide personalized service for different users, especially for the teachers and students building a good network communication environment. So to develop the campus light blogging system is very important for promoting the campus cultureaand enriching the campus life. The paper analyzes th...学位:工程硕士院系专业:信息科学与技术学院_计算机技术学号:X201122100
Research on The Real Estate Tax System Reform in China
房地产税收是一个综合性概念,即一切与房地产经济运动过程有直接关系的税收都属于房地产税收,涉及到房地产的流转、保有和取得三个环节的十二个具体税种。作为关系到人们安居乐业的房地产业,对经济发展有着很强的带动力,是国民经济的支柱产业。同时,房地产税收作为国家调节房地产经济和社会经济分配的一个重要杠杆以及财政收入的重要来源,在整个税制中占有重要的地位。一个结构完备、运行良好的房地产市场离不开一个完善、高效的房地产税收制度。房地产税制的有效运行,对于促进房地产业的健康发展、进而促进国民经济结构的有效调整,保证国民经济持续、快速、健康发展,合理调节社会收入分配都具有十分积极的作用。然而现行的房地产税收制度...The real estate tax is a comprehensive concept, including all the tax related to the real estate economy, which involves twelve concrete categories of taxation concerning the three links of the real estate. The real estate industry which is related to the people’s living contentment has very strong power to the economic development, which is also the pillar industry of national economy. A...学位:经济学硕士院系专业:经济学院财政金融系_财政学(含税收学)学号:20034101
EQCM and in-situ reflectance FTIR spectroscopic studies of adsorption and oxidation of methanol on Pt electrode in alkaline media
The adsorption and oxidation of methanol on Pt electrode in alkaline media have been investigated by using cyclic voltammetry, electrochemical quartz crystal microbalance (EQCM) and in-situ reflectance FTIR spectroscopy. The experimental results demonstrated that the electrooxidation of CH3OH was closely relative to solution acidity. Only one current peak of methanol oxidation in PGPS was detected at -0.09 V, which illustrated the disappearance of the second current peak due to Pt electrode passivation in alkaline media. The magnitude of the dissociative adsorbate of methanol in alkaline media is smaller than that in acidic media. The main product, such as CO2 and CO32-, was detected clearly and the reactive intermediates that were determined by FTIRS under experimental condition might be mainly HCOO- species. The EQCM studies provide quantitative results of surface mass changes during methanol oxidation, and have thrown new light in the elucidating methanol oxidation
给定最大匹配数的树的零阶广义Randi指标
图G的零阶广义Randi指标定义为0Rα(G)=v∈V(G)d(v)α,其中d(v)为图G的顶点v的度,α为任意实数.研究了树的零阶广义Rα指标的极值问题,利用分析和图的理论,确定了任意给定最大匹配数的树的最大和最小Rα的值,并刻画了达到该极值的树
社会保障税的国际比较与借鉴
人均GDP超过1000美元,人们基本过上小康生活,然而我国也进入了“高风险”时期:收入差距扩大、失业威胁 加剧、人口老龄化严峻。如何防范和解决好这类问题关系到改革、发展与稳定的大局。完善社会保障制度,真正发挥 社会保障“安全网”的功效已成为人们共识。本文比较分析了各国社会保障税的税制设置方式,并进一步探讨在我国 开征社会保障税的一些相关问题。福建省莆田学院科研基金项目(2005022)
Advances in Cyanobacterial Phycobilisome Assembling in vitro
光合作用的第一步是高效地捕获和传递光能.藻胆体位于蓝藻和红藻细胞的类囊体膜外朝向基质一侧,结构上主要由藻胆蛋白和连接蛋白构成,且功能上以不低于98%的效率捕获和传递光能至PSⅡ.3种类型的藻胆蛋白单体的结构类似,由于含有不同数目和种类的色素分子以及藻胆蛋白结构的细微差别导致光能最大吸收波长不同.藻胆蛋白以不同寡聚形式,加上连接蛋白的作用,依靠氢键和极性相互作用,自发组装为高度有序的完整藻胆体结构.科学家尝试体外合成和组装藻胆体,但目前只达到三聚体形式,六聚体及更高级组装远未解决.本文主要从生物组合合成的角度,综述了体外从头合成和组装完整藻胆体的历程和进展,并展望了迄今完成的最高级别的重组别藻蓝..
三角格上的σ全一问题
主要研究三角格上的σ全一问题.应用图论知识,利用数学归纳法,分别给出了以三角形,菱形(四边形)和正六边形为边界的三角格上的σ全一问题无解的充要条件,并在证明中给出有解情况下详细解的刻画
PET碳酸饮料瓶结晶与流变性能研究
通过偏光透射法研究PET碳酸饮料瓶结晶分布情况,稳态与动态流变法研究PET树脂的流变性能,探讨PET瓶应力开裂的原因.结果表明:瓶身结晶分布不均匀,树脂分子量分布窄、有极高分子量存在、粘性太大易造成应力集中或应力残留,使PET碳酸饮料瓶耐应力开裂能力变差
有机玻璃表面增强增透的研究
采用溶胶-凝胶体系制备光学塑料(有机玻璃:PMMA)表面增强的有机硅树脂涂层,制得Si-O-Si刚性交联网络涂层,具有良好的耐磨性及附着力,其表面平整、光滑,同时对PMMA基板的透光性具有明显的改善.并通过红外吸收光谱(FT-IR),紫外分光光度计(UV-vis)等手段,对涂层固化过程及各项性能进行表征
NUMERICAL SIMULATION of THE CHARACTERISTICS of TYPHOON WIND-FIELD IN XIAMEN REGION
基于1959年~2008年厦门地区的台风详细资料,采用yAn MEng风场模型进行台风数值模拟,得到了台风极值风速序列,并推算出厦门地区不同重现期的极值风速,与年极值风速实测资料统计结果及现行规范值进行比较,为结构抗风设计提供了更为合理的荷载信息;同时,讨论了风向对极值风速分布的影响,为正确选择建筑方位提供理论指导。最后,基于yAn MEng风场不同半径位置处风剖面的变化规律,提取厦门地区沿高度的极值风速,研究了台风条件下的风剖面规律。Based on observed data of typhoons in Xiamen region during 1959- 2008, numerical simulation of typhoon is conducted using the Yan Meng wind-field model to obtain the extreme wind velocity series.Then, extreme wind velocity for different return periods is estimated and compared with the statistical results of the observed data of annual extreme wind velocity in Xiamen region, as well as the current structural code, to provide more accurate wind load information for the wind-resistant structural design.Furthermore, the effect of wind direction on extreme wind velocity is discussed in this paper to provide theoretical guidance of choosing appropriate building direction.Finally, gradient wind level as well as typhoon-governed wind profile in Xiamen region is proposed based on numerical simulation of the Yan Meng typhoon wind-field model.土木工程防灾国家重点实验室开放课题基金项目(SLDRCE10-MB-01); 厦门市建设科技项目(2011-2-1
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