Mathematical models for control of resource-distribution used in drilling

System analysis can provide an efficient control of the distribution of an oil company's drilling resources. The technique presented here (using cable as an example) is applied to the construction and synthesis of a material- and technical- resources control system, and to the mathematical modeling of the man-computer interface.     

Nonlinearly Constrained Optimization Theory to Interpret Magnetic Anomalies Due to Vertical Faults and Thin Dikes

A new and simple method based on a nonlinearly mathematical optimization concept has been proposed in this research to interpret magnetic anomalies due to vertical faults and thin dikes. This proposed interpretative method consists of three main steps. The first step is to formulate nonlinearly constrained optimization problems to describe the geophysical problems related to the studied structures. The second step is to suggest an interior penalty function in order to convert these nonlinearly constrained optimization problems into nonlinearly unconstrained optimization ones. The third step is to solve the converted nonlinearly unconstrained optimization problems by using the famous Hooke and Jeevess algorithm in order to estimate the geophysical parameters of the studied structures such as: depth, amplitude coefficient, and index parameter. The Hooke and Jeevess algorithm is purposely chosen for being robust and also its application to magnetic data converges rapidly towards the optimal estimation of parameters. This method was first tested on theoretical models with different random noise, where a very close agreement was obtained between the assumed and evaluated parameters. The validity of this new method was also tested on practical field examples taken from Australia, India, United States, and Brazil, where available magnetic data existed and was previously analyzed by different interpretative methods. The agreement between the results obtained by our developed method and those obtained by the other geophysical methods is good. The advantages of this newly proposed method, compared with the other published interpretative methods, also have been discussed and demonstrated.     

GPS对流层延迟模型的比较分析

基于GPS对流层模型,对几种模型进行实际应用的对比,通过GAMIT软件对CORS数据进行处理,分析得出了几种模型在GPS反演大气水汽含量应用中的精度。     

Suffer软件在《构造地质学》教学中的应用

近年来,计算机技术飞速发展,不断地在不同领域得到广泛应用。在分析《构造地质学》这门课程特点的基础上,引入了Suffer软件,介绍了Suffer软件在编制构造图中的应用;分别就平面图的勾绘及三维地质模型展布的应用进行了分析。     

海南国际旅游岛公众版地理信息公共平台设计与实现

简单介绍了海南国际旅游岛公众版地理信息公共平台的总体架构,再从数据集、管理服务软件系统和支撑环境三个方面分别详细介绍了平台数据内容、功能服务以及软硬件、网络部署等内容的设计与实现.     

大气本底站反应性气体观测数据处理系统功能设计及实现

基于反应性气体多年观测的较为成熟的数据处理和质量控制方法,采用模块化功能结构设计,通过应用Visual Studio开发平台并结合MAP WinGIS等空间和时间显示控件,对反应性气体观测数据处理系统进行了设计和开发.系统实现了观测数据在空间和时间上的可视化显示,实际业务应用表明,具有良好的人机交互和数据处理能力,具备一定的数据统计分析功能.实现了对大气本底站反应性气体观测数据的统一管理和综合处理,已成为大气成分观测数据质量控制业务系统的一个重要组成部分.     

基于投影法和数学形态学的车牌定位算法

车牌定位是车牌识别系统中的关键技术之一,车牌定位的质量直接影响着后续字符识别的结果。本文提出了一种结合投影法和形态学的车牌定位算法,首先对图像进行预处理,接着利用水平投影算法确定车牌的上下边界,然后利用形态学方法迭代确定车牌的左右边界．最后进行精定位。实验表明,该方法具有较高的定位精度。     

测量型GPS仪器比较

以科学的方法对Trimble、Topcon、南方测绘三个厂家GPS信号接收机和数据后处理软件进行比较。首先从GPS的发展历史和现状及其存在的问题进行分析研究,结合GPS系统和信号接收机的原理,对GPS结构等不同的方面进行分析比较,然后比较分析了各型号GPS的物理指标、精度指标、性能和价格,并对各型号GPS对应的数据后处理软件进行了实验分析,最后通过实验分析得出结论。     

输电线路测量辅助处理软件编制

采用VB 6.0并结合架空输电线路测量内业数据整理的特点,编制了输电线路测量辅助处理软件对测量数据进行编辑处理,生成各种成果表和归档资料,同时提供与架空送电线路软件的数据接口。该软件实现了架空输电线路内业数据处理自动化的,已在架空输电线路工程中得到广泛应用。