基于数据库驱动的工作流管理系统的设计

探讨了一种基于数据库驱动的工作流管理系统的实现方案.分析了中心数据库在工作流管理系统中的作用以及驱动机制,并介绍了数据库的设计方案.重点介绍了工作流系统的实现,阐述了工作流引擎的实现机制,包括流程分配、路由选择及消息发送机制的实现.     

基于．NET的教学平台的设计与实现

设计和实现了一个基于.NET的三层结构的教学平台系统,利用SPEECH.NET技术实现了人与电脑的交互,并重点讲述了试题自动分析以及自动生成题库的实现过程.     

基于VB.NET的智能公交管理系统软件平台的开发

VB.NET是Visual Studio.NET战略框架中的重要组成部分,它实现了完全的面向对象特征.针对以VB.NET作为开发工具,以SQL Server2000作为后台数据库的智能公交管理系统软件平台的开发.详细介绍了系统的需求分析、方案设计、功能结构和软件的实现.该系统的应用提高了管理效率,真正实现公交公司的科学化管理.     

论延安精神的当代价值与中国梦的实现

中华民族有延安精神作为支持,必将凝聚起绝大多数中国人的力量,凝聚更多的能量,推动中国梦的实现.延安精神内涵丰富,主要包括：具有坚定政治理念的信念价值,全心全意为人民服务的人本价值,实事求是,理论联系实际的求实价值.发扬延安精神的信念价值,坚定实现中国梦的信心;发扬延安精神的求是价值,从实际出发,探索实现中国梦的道路;发扬延安精神的人本价值,为实现中国梦凝聚力量.夺取中国革命胜利离不开延安精神,实现中国梦,实现中华民族的伟大复兴,同样需要延安精神.     

基于.NET的实验设备管理信息系统的设计

基于微软的.NET框架,提出并实现了一个B/S结构的高校实验设备管理信息系统.文章首先介绍了采用.NET框架的多层体系进行系统的总体构架设计,接着阐述了在.NET平台下利用工作流技术以及Webservice技术对系统的实现,最后介绍了高校实验设备管理信息化、网络化的实现.     

基于51单片机的ISA加密卡设计

利用单片机实现加密卡的硬件设计及其软件实现.其中硬件主控制电路采用Lattice公司的可编程器件GAL,控制PC机和51单片机的握手信号;软件部分采用软件加密方式实现加密功能.该卡现已通过调试,应用于实践.此果表明,该卡能够很好地实现数据加密.     

用类的RSA体制实现方案

通过对 RSA算法原理的分析和实现方法的研究 ,构造了数字签名软件的数据结构 .用类的对象对自定义函数设计模块进行调用 ,实现任意长度数据的运算 .针对 RSA实现算法运算速度慢的特点 ,在生成密钥对的过程中采用小素数翻番、欧几里得扩展算法、二元法等一系列方法 ,以加快算法实现速度 .从而 ,在微机上实现了数字签名的软件开发 .     

Router Stack下的快速转发机制

论述了快速转发机制及其实现,并通过一个快速转发实例详细介绍了fastPathIp.c中实现的供fastPathLib调用的接口函数,并通过分析示例程序中实现的主要函数,具体说明快速转发应用的转发逻辑.证明快速转发应用的实现将大大提高交换机的转发性能.     

基于构件的电子商务系统体系结构研究

简单地介绍了电子商务系统与构件技术,并对实现电子商务系统的构件进行分类.提出了一个用于实现电子商务系统的六层体系结构,对每个层次所需要实现的构件与实现技术进行了描述,并对实现层次间通信的交互原语与商务原语进行了定义.     

基于三角剖分的二维图形边界裁剪

本文基于目前的图形裁减算法,介绍了在网格基础上实现对矩形进行三角剖分.从而实现对二维图形进行边界裁减的技术.同时也大概的介绍了实现程序的平台,以及程序的实现.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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