基于ArcGIS Engine的油田地理信息系统的设计与实现

在油田开发中,油井和管道等油田空间事物的属性信息及它们之间的空间地理位置关系对开发具有重要的意义。设计并实现了一种基于ArcGIS Engine的油田地理信息系统。系统采用C/S模式工作,后台采用SQL Server数据库,利用ArcGIS Engine和ArcSDE作为空间数据开发和管理的主要组件。该系统不但可以提供清晰而形象的可视化油田地图,而且可以在地图上直接对油田中的井、间、站及各种管道进行在线操作编辑、查询和统计,是油田开发管理中强有力的决策支持助手。     

一种高效通用WEB查询系统设计方法

针对当前WEB信息查询系统应用广泛且查询需求复杂的现状,论文给出构建可复用WEB信息查询系统的设计框架.在设计过程中,充分采用当前先进成熟的设计方法和技术,如XML、XSLT、Web Service、Enterprise Library等.此框架能实现异构数据查询、自动分析业务类型、统一的数据访问和共享查询条件界面及显示查询结果界面.在此基础上,开发人员通过简单配置和少量代码编写即可快速开发出满足客户需要的WEB信息查询系统.此框架复用度高,应用到查询系统中能提高开发效率,降低维护成本,而且构建的系统具有高扩展性和可移植性,极大地减少WEB查询系统的开发和维护工作.     

凸轮轴磨削数据库系统的设计与开发

针对凸轮轴磨削加工的现状,提出开发磨削数据库系统的设想.以凸轮轴磨削加工中的工件、磨床、砂轮、磨削液和磨削参数等数据信息作为研究对象,分析数据库系统功能需求、系统角色和系统数据关系等,详细设计系统功能模块、基础数据库、用户权限和系统架构,开发凸轮轴磨削数据库系统,实现凸轮轴的磨削数据的系统化、规范化,向用户提供机床、砂轮、磨削液、材质、实例等信息的收集、查询与检索服务,解决凸轮轴磨削工艺选型与方案决策的技术难题.     

基于WebGIS的高速公路信息发布系统的设计与实现

随着国家对高速公路的大规模建设,高速公路路网越来越复杂.为了方便公众查询出行信息,开发了基于WebGIS的高速公路信息发布系统.本系统采用MapInfo公司的WebGIS平台MapXtreme,并且使用了目前较为先进的Java Applet构造方法,实现了通过电子地图将高速公路上反映道路畅通情况的可变限速标志进行网上发布、路线信息查询和公众出行信息服务、车辆行驶流水费用明细查询等功能.运行结果表明利用WebGIS技术克服了基于传统模式开发该系统的弊端,提高了系统的运行效率,增强大量空间数据和属性数据的处理能力.     

基于Google Maps API地震信息查询系统研究与开发

针对地震信息网络发布现状,为了实现对地震信息实现有效的管理,特别是方便用户的快速查询,本文探讨了基于Google Maps API、Google Earth KML及数据库等相关技术建立信息查询系统,并开发出了应用系统.该系统实现了对地震信息资源在GIS平台上的应用,这为有关部门在信息检索方面提供了支持,为公众快速获得相关地震信息提供了一个便捷的平台.     

基于VB与MO的120急救系统的设计与开发

120急救在现代城市中扮演着越来越重要的角色,快速、准确、高效的指挥决策和调度是城市急救系统实现的关键.系统从功能和技术两方面入手,在分析整合平顶山市现有120急救系统的基础上引入GIS、GPS和GSM技术,利用组件mapobjects,结合visual basic开发语言,实现对数据的空间分析和管理,建立了基于GIS的城市120急救系统,实现了信息的查询分析、最佳路径分析以及缓冲区分析功能.     

基于网络的地理信息系统在海洋工程中的应用与实现

GIs作为一种集管理、决策等于一体的综合性系统,已广泛应用于各个领域.地理信息系统与互联网结合形成的万维网地理信息系统(WebGIS)是在互联网上进行空间信息查询、发布与辅助领导决定的一项新技术.本文分析了海洋工程的特点,设计并实现了基于网络的海洋地理信息系统的信息查询与决策系统.     

基于ArcGIS Engine的海洋倾倒区管理分析系统的设计

介绍了以.net2.0为开发平台,利用ArcGIS Engine9.2组件库,开发海洋倾倒区管理与分析系统的总体设计、关键技术和主要步骤.该系统在具备了对海洋倾倒区查询、分析的基础上,实现了基于GIS技术的可视化管理,为海洋环境管理部门对海洋倾废区使用情况的管理和决策提供可靠的决策支持.     

基于VB+SQL Server的城镇居民建房系统的设计与实现

使用VB开发软件和SQL Server数据库开发了城镇居民建房系统,实现了居民住房信息查询、添加、修改、更新等功能.居民及管理人员可以通过计算机浏览器,以人机交互式的客户端程序实现对居民建房的查询、管理、更新进行统计和记录.     

基于Mobile SVG矢量地图的移动定位查询

在J2ME体系以及Mobile SVG技术研究的基础上,根据空间实体与SVG图层的映射关系实现了矢量地图数据组织与表达.提出了基于Mobile SVG的矢量地图定位查询系统的框架模型.对矢量地图在手机上的显示、平移、缩放和定位查询的方法进行研究并实现.基于所提出的框架模型,设计并实现了一个应用于油田领域的矢量地图定位查询系统,该系统在油田业务中得到了初步的应用.     

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.     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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