基于PHP和MySQL的B/W/D三层结构动态Web数据库应用系统的研究与开发

对分布式动态Web数据库应用系统开发的三层结构技术进行了探讨 ,并对基于PHP和MySQL的B/W /D三层结构动态WEB数据库应用系统开发技术进行了研究。利用PHP与MySQL、Dreamweaver等工具开发了一个基于PHP和MySQL的Web数据库应用系统———校友信息网上查询系统 ,从而实现了大型数据库资源在Internet上的交互共享访问     

基于Network Service的WEB管理系统安全

随着Internet/Intranet技术的发展,基于B/S结构的Web管理系统成为开发研究的热点。因为Web应用程序允许用户访问中心资源(即Web服务器)并通过此中心资源访问其他资源(如数据库服务器),因此安全性是Web应用程序中一个关键部分。所以采取严格的安全措施,为用户提供安全的环境,是Web管理系统开发管理中的重要举措。     

基于B/S计算模型的Web技术在电子商务中的应用

介绍了应用系统中C/S计算模型的二层体系结构和三层体系结构的优缺点，详尽阐述了一种基于Internet的B/S计算模型，它可以解决C/S计算模型中存在的问题，并提出了基于B/S计算模型的Web应用技术在电子商务系统中的解决方案。     

ASP.Net的数据库连接技术探讨

随着互联网应用技术的发展,基于B/S模型的应用系统越来越多,而数据库连接技术是B/S系统设计、研发中的关键环节.探讨了基于ASP.Net技术中常用的数据库连接技术的模型、特点,对他们的优缺点进行了分析、比较研究,得出在Web应用程序与数据库连接过程中应以实际的数据环境选择合适的连接才能达到对数据库的最优化访问.     

基于Web的分子化石信息系统探讨

通过系统需求分析，应用ASP技术和B／S多层结构的分布式数据库技术来实现分子化石信息系统的Web设计开发。对分子化石图谱、结构式等数据进行了系统总结，建立了基于Web的分子化石数据库模型，并详细描述了包括气相色谱图库、质量色谱图库、总离子流图库、质谱图库、化石分子数据库和化石分子结构图库在内的分子化石数据库的结构和联接方式。该系统的成功研制将实现分子化石鉴别的计算机网络化，有利于促进分子化石相关研究的信息化和现代化。     

基于SOAP的Web服务系统分析与设计

SOAP是基于万维网数据交换标准XML的一种新的软件通信技术,文章概述了SOAP以及基于XML的Web体系结构,讨论了基于SOAP的Web服务系统,同时设计了SOAP的应用模型和SOAP客户端和服务端的开发模型及其应用系统框架。研究表明,基于SOAP构建的应用具有很强的生命力。     

基于Browser/Server模式的招生管理信息系统的设计与实现

随着Internet的迅速发展和普及,基于Web技术的B/S(Browser/Server)模式管理信息系统开发成为热点.基于B/S模式的管理信息系统比C/S(Client/Server)模式的管理信息系统有许多优点.本文阐述了基于B/S模式下的高校招生考试管理信息系统的设计方案与实现技术.通过实践证明该系统具有良好的安全、可靠性和易于维护及扩展等特点.     

基于SQL Server的销售系统

自从Web技术出现以来,尤其Internet的出现使企业拥有了一个商机无限的网络发展空间,许多传统的信息和数据库系统正在被移植到互联网上,越来越多的企业开始将自己的业务通过Internet的形式直接的提供给客户。随着网络技术及电子商务技术的日渐成熟,人们已不再满足于传统的购买方式,而是渴望通过Internet购买自己喜欢的物品。本文开发了一个销售管理系统,本系统采用B/S管理模式,后台以SQL Server作为后台数据库,系统操作便捷,使用方便,较好地提高了效率与可靠性。     

基于Struts框架的人事管理系统表现层设计与实现

基于B/S的多层Web体系结构正处于不断完善之中,现在已成为Web应用开发的主流。但是在这种多层Web体系结构技术的设计中,普遍存在着程序可重用程度低、维护工作繁琐、应变能力较弱等不足。针对企业管理的重要分支——人事管理,通过Struts框架设计的人事管理系统,实现了功能模块和显示模块的分离,并提高了应用系统的可维护性、可扩展性、可移植性以及组件的可复用性,从而解决了上述B/S体系结构存在的问题。     

基于WEB的ORACLE用户管理和授权管理

对基于动态 WEB技术的三层 B/ S计算模型和实现技术 (CGI技术 ,Internet API技术 ,ASP技术 ,JAVA Applet以及 Plug- in插件技术等 )进行了详细的论述和分析 ,指出了各自的优缺点。并以此为基础提出了在三层 B/ S结构下 ,用 ASP技术实现 ORACL E数据库服务器用户管理和授权管理的思路和方法     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the