Design and Implementation of Management System for Property of Commercial and Residential Community

随着中国经济与科学技术的飞速发展，计算机已经成为社会普遍应用的设备，特别是城市生活的市民。随着人们逐渐步入了信息社会，城市小区的物业管理也摆脱了传统的人工管理的方式，利用计算机开发了各种物业管理系统软件去处理大量的业主资料维护和复杂的收费统计以及小区所有的资源管理，实现了对小区物业高效率的维护和管理，大大方便了物业管理者的工作，但是目前针对小区住户的物业管理系统还没有出现很多。因此本论文在针对物业管理工作的前提下，还增加了对住户模块的分析与设计，住户可以依靠我们的系统在计算机网页端进行物业活动，比如付费、提交维修请求等。我们的物业管理系统增加了住户模块之后，不仅方便了住户可以随时进行物业缴费，...As China's economy and the rapid development of science and technology, computer has become a widespread application of equipment, especially the city life of citizens. As people gradually stepped into the information society, urban residential property management is to get rid of the traditional artificial management way, using a computer has developed a variety of property management system soft...学位：工程硕士院系专业：软件学院_软件工程学号：X201323047

Mechanism of Seawater Intrusion Using Hydrochemistry and Environmental Isotopes in Qinhuangdao Yang Dai River Plain

海水入侵是滨海地区面临的主要资源、环境与生态问题之一。它不仅威胁人类稀缺的淡水资源，危及人类生命和健康，而且破坏生态环境平衡，制约社会经济的可持续发展。上世纪80年代以来，秦皇岛洋戴河平原因集中式过量开采地下水引发了海水入侵灾害，致使区内地下水水质整体咸化、恶化，大量开采井报废，并引发土壤盐碱化等次生环境地质灾害。海水入侵灾害造成了秦皇岛一系列的经济损失，直接制约秦皇岛经济的可持续发展和人民生活质量的提高，而开展海水入侵的时空分布特征以及成因机理的研究，可以为秦皇岛因地制宜地防治海水入侵，以及合理开发、利用和保护滨岸地区珍稀的地下淡水资源提供科学的依据。 咸淡水过渡带的空间分布形态和物质迁移...Seawater intrusion has currently become one of major resource, environment and ecology problems in the world. It not only threatens the resource of our rare fresh groundwater and does considerable harm to the health and life of human own, but also destroys the ecological balance and prohibits the entire society from constantly developing forwards. Since the 1980s, the over-exploitation of groundwa...学位：理学硕士院系专业：海洋与环境学院海洋学系_海洋地质学号：2242009115112

The Effect of Price Information on Consumers Reference Price Formation——Taking Consumer Electronics for Example

适应水平理论、同化对比理论和前景理论都认为，人们在判断产品价格高低时，都会将其与自己内心的价格标准进行对比，而这个价格标准就是参考价格。国外学者们对于参考价格进行了不少有意义的研究，但研究的重点大都放在了参考价格对于消费者购买决策的影响上，而对于参考价格形成的研究则相对较少。并且，对于参考价格形成的问题还存在许多争议，尚未达成统一意见，因此这方面的研究还需要加强。另外，大部分学者在研究参考价格时，都选择快速消费品的消费数据进行，缺乏对耐用品等其他产品的研究，因此研究结论存在局限性。 本研究采用情景实验法，以消费类电子产品为例，通过方差分析等统计方法，检验历史价格、同类产品价格以及零售商提供的...Adaptation-level theory, assimilation-contrast theory and prospect theory all support that individuals make judgments based on the comparison of price to internal price standard which is named reference price. Despite a wealth of significant research has been conducted by foreign researchers, there is much less research on formation of reference price than that on effect of consumer purchase decis...学位：管理学硕士院系专业：管理学院企业管理系_企业管理(含财务管理、市场营销、人力资源管理)学号：1762009115107

票据背书伪造法律规制的比较及借鉴

本文从国内法和国际法两个层面比较了两大票据法系及国际公约对票据背书伪造问题的具体规定,并从利于票据信用与流通功能实现的视角建议我国今后在票据背书伪造的立法规制上应借鉴大陆法系的合理内核,建立起以保护善意持票人票据权利为主,兼顾其他票据当事人利益的责任机制

Application of proteomics study to red tide algae

国家自然科学基金资助项目(40206018

Estimating Submarine Groundwater Discharge into the Jiaozhou Bay Using ~(226)Ra

海底地下水排泄(SGD)是全球水循环的一个组成部分,其输送的溶解物质不仅参与海洋的生物地球化学循环,而且影响近岸海域的生态环境。为了评估胶州湾海底地下水排泄状况,通过建立胶州湾内海水中226Ra的质量平衡模型来计算海底地下水排泄通量。胶州湾海水中226Ra的源主要有河流的输入、沉积物扩散输入和地下水的输入,海水系统在稳定状态下,这几种源应该与湾内海水和湾外海水的混合损失达到平衡。除了将地下水输入作为未知项外,对其他源和汇逐个进行量化,计算得知:2011年9—10月胶州湾的海底地下水排泄通量为7.85×10~6m~3·d~(-1);2012年4—5月胶州湾的海底地下水排泄通量为4.72×106m~3·d~(-1)。在此基础上,对地下水输入胶州湾的营养盐进行了评价。Submarine groundwater discharge( SGD) is a part of global water cycle,which delivers a large amount of solutes to the biogeochemical cycle and affects the coastal ecological environment. The ~(226)Ra mass balance model was established to estimate the submarine groundwater discharge to the Jiaozhou Bay. The ~(226)Ra sources include river transport,sediment diffusion and SGD,these sources should be in balance with the mixing loss of the bay water and open seawater when the seawater system is in the stable state. Except for the SGD was unknown item,other sources and sinks were quantified one by one. Calculated results showed that the SGD fluxes during September to October in 2011 was 7. 85 × 106m~3·d~(-1),April to May in 2012 was 4. 72 × 106m~3·d~(- 1). Based on the SGD fluxes,the SGD derived nutrient fluxes were estimated.国家自然科学基金项目(41072174)~

改进型铜基甲醇合成催化剂XH401的DTA研究

５．０ＭＰａ压力下活性评价结果表明，改进型四组份铜基甲醇合成催化剂ＸＨ４０１（Ｃｕ－Ｚｎ－Ａ１－Ｍ）初始活性比工业三组份铜基甲醇合成催化剂Ｃ２０７（Ｃｕ－Ｚｎ－Ａｌ）提高约２７％，耐热试验后ＸＨ４０１合成甲醇活性比Ｃ２０７高约８５％．两种催化剂的ＵＴＡ对比试验显示，工作态ＸＨ４０１催化剂的热稳定性明显优于Ｃ２０７催化剂

PREPARATION OF QUATERNARY CINCHONINE TARTRATE SALTS BY MICRO COLUMN CHROMATOGRAPHY

报道了用微型柱色谱制备用于不对称相转移催化和多相不对称催化合成的辛可宁季铵盐Preparation of quaternary cinchonine tartrate salts by micro column chromatography is described.国家自然科学基金资助项目 ( 2 99330 4 0

The Evaluation of Submarine Groundwater Discharge in Jiaozhou Bay Based on ~(222)Rn Mass Balance

海底地下水排泄(Sgd)作为全球水循环的一个组成部分,近年来成为陆海相互作用的研究热点。地球化学示踪法是研究海底地下水排泄的主要手段。本文以环境同位素222rn作为示踪剂,通过构建222rn质量平衡模型来评价胶州湾的海底地下水排泄,并进一步估算地下水输入的营养盐。222rn质量平衡模型的源项考虑了河流的输入、沉积物的扩散、母体226rA的支持,汇项考虑了222rn的自身衰变、222rn散逸到大气的损失以及与湾外海水的混合损失,源汇项的差值则作为地下水输入的222rn通量。结果表明,2011年9—10月胶州湾海底地下水排泄通量为24.2 l？M–2？d–1,2012年4—5月胶州湾海底地下水排泄通量为7.8 l？M–2？d–1。丰水季节地下水输入胶州湾的营养盐低于河流输入的,但是枯水季节地下水输入的营养盐接近河流输入的,特别是输入的活性磷酸盐和硅酸盐很接近。Submarine groundwater discharge(SGD), an important part of global water cycle, has recently been a research focus in the field of land-ocean interaction along the coastal zone.Geochemical tracing is a major tool to study submarine groundwater discharge.Taking natural occurring isotope 222 Rn as a tracer, the authors built 222 Rn mass balance model to estimate groundwater discharge to Jiaozhou Bay, and also evaluated the nutrient fluxes transported via groundwater.River input, dispersion of sediments, and support from parent 226 Ra are considered to be the sources of 222 Rn mass balance model, whereas radioactive decay, escape from sea-water interface to air and loss in mixing with the low activity water from open ocean are considered to be the sink of the model.Thus, the imbalance of budget from the model is attributed to submarine groundwater discharge.Calculations show that submarine groundwater discharge flux to Jiaozhou Bay was 24.2 L·m–2·d–1 from September to October in 2011, and 7.8 L·m–2·d–1 from April to May in 2014, respectively.The results of the study also indicate that the nutrient fluxes derived from groundwater during the wet season are lower than those transported by the local rivers, whereas the nutrient fluxes derived from groundwater during the dry season are close to those transported by the local rivers and, what is more, soluble reactive phosphate and silicate fluxes from both groundwater and river are very close to each other.国家自然科学基金项目(编号:41072174)资