基于规则的分布式集群运算系统研究

在分析分布式集群运算需求的基础上,提出了按操作构件分解、基于规则调度构建分布式集群运算服务方法,实现业务运算的按需服务．并给出了试验系统总体设计和初步验证结果。     

一种EDA虚拟仪器系统实现方法

研究了虚拟仪器系统的实现技术。首先利用UML工具分析并设计了虚拟仪器系统的模型,给出了系统类图和顺序图。最后采用MVC模式,文档解析、数据转换及消息响应机制等技术实现了虚拟示波器。     

基于WCF的异构系统间数据交互研究

企业内部多个系统因采用的平台和技术不同,相互间数据交互非常困难.针对这一问题,在研究WCF的框架和数据交互技术的基础上,设计一个能够实现异构系统间数据交互的平台.该平台接收到异构系统的数据请求后,经过解析处理,通过WCF服务提供的数据交互接口实现数据交互.     

基于Hadoop的房产信息服务的方法

针对大数据信息服务的运算效率的问题,提出一种基于Hadoop的房产信息服务方法,设计并实现了一个房产信息服务原型系统.使用Hadoop搭建分布式文件系统,在该文件系统之上使用RCFile对数据进行存储管理.此外,在该系统中集成数据索引、数据压缩等技术,并提出一种SQL高效查询机制——SQL-JM,将SQL查询转变成MapReduce作业,提高查询效率.前端使用一些信息可视化技术,如Treemap,StreamGraph,折线图等对数据进行直观展示.用户通过浏览器登录该系统后,可以申请并使用相关房产信息服务.Hive,HadoopDB,MySQL等数据库系统的查询对比实验验证了该系统能提高查询效率.     

基于Android系统的学生成绩查询系统设计

设计并实现了基于Android系统的学生成绩查询系统手机客户端软件。该查询系统结合SQLite数据库和学院网络学生成绩查询系统,采用C/S模式,其后台服务器使用数据库服务器和应用服务器组成的双重服务架构,这不但便于管理,还能提高服务响应速度。其中数据库服务器主要通过API获取学生成绩数据,应用服务器则是针对取到的学生成绩数据进行解析以及重新组装,以xml格式反馈给手机客户端,手机客户端进行DOM数据解析后,即可显示到用户界面。服务器端采用Servlet技术,在Eclipse平台下使用JAVA语言编程完成学生本年度成绩及历年成绩查询功能。实际测试表明,系统可运行于基于Android系统的移动设备,且运行稳定、查询便捷、适用性强。     

达梦数据库全文检索系统

流行的数据库管理系统通常实现了全文检索子系统,从而方便对数据库表中的文本数据建立全文索引,进而借助于这个索引来检索文本数据.达梦数据库管理系统提供多文本数据检索服务.包括全文索引和全文检索.达梦数据库实现了全文检索系统.但是此系统存在着索引膨胀率过高,索引填充时间较长的问题.全文检索,是一门综合性很强的技术.它牵扯到了很多的技术点,主要有分词技术,数据源提取和文档解析技术,相关度计算技术,存储技术.压缩技术等.     

n重解析运算结果的几何解释

奥禅在他的论文「集运算论」对解析运算的结果曾作了几何解释。本文的目的是对 n 重解析运算给以相应的几何解释。本文的第一部分是把 n 重解析运算基底表现在康托不连续体 D 上;又用对所给解析运算基底的补运算得出补运算基底在 D 上的表现。第二部分是作 n 重解析运算结果的几何解释。     

针对三值光学计算机的C语言扩展

为了将三值光学计算机(ternary optical computer,TOC)数据位众多和光学处理器硬件可重构性这两个特点应用于高级语言程序中,提出并实现了针对三值光学计算机的C语言扩充技术.该技术中的用户可见部分包括一组C语言扩充语句和一个用户运算请求文件自动生成软件模块,其中扩充语句采用C语言函数的书写方式,并采用专用字头SZG_;运算请求文件自动生成软件模块将用户在给定界面中送入的运算方式和输入数据自动转换成预先制定的数据文件格式,生成SZG文件.三值光学计算机返回的运算结果会自动保存在与运算请求文件相同的目录下,且文件名由对应的运算请求文件名加后缀R.SZG组成.用户不可见部分包括:对扩充指令的编译进程、SZG文件生成机制、运算请求状况记录进程、运算结果接收进程和三值光学计算机端服务进程.使用该技术,用户不必改变编程习惯,可直接在C语言程序中使用三值光学计算机.该技术已在由PC机和嵌入式系统组成的三值光学计算机模拟环境中进行了实验,实验结果表明,该技术行之有效.     

数据表数据分类和合计的设计与实现方法

数据表数据分类和合计的设计与实现方法用中国传统编号方式,结合现代数据库技术,实现了对数据库表数据的排序、分类、合计,并且用Foxpro编写了分类、合计程序,并将此技术成功地移植到"宁夏电力建设工程决算系统"软件中,运算准确、速度快     

实现多字节数基本运算功能的算法研究

介绍了单片机系统中实现多字节数基本运算功能的新方法，单片机中软件运行规模受到存储空间的制约，该算法利用较少的数据存储空间，采用移位、位操作等基本指令，结合数据在存储器中的组织结构，分析各种多字节数基本运算功能的实现方法及过程，指出了实现各种多字节数运算功能需用到的存储空间，给出了部分算法程序。     

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