MAPGIS二次开发库的设计与实现简介

ＭＡＰＧＩＳ系统不仅是一个ＧＩＳ基础软件,而且是用户开发面向具体领域的ＧＩＳ的工具,在分析对比ＧＩＳ空间模型的基础上,从空间实体模型分析、二次开发函数库软件结构设计、函数的功能分类、的实现几个方面。     

正交试验在实验设计中的应用

采用正交试验方案,通过数理统计寻找最佳试验方案,用数学方法对选择方案进行期望评估,并通过Ｆ检验证实方案选择恰当。     

一种重写谱数据文件的计算机稳谱技术研究

本文提出了一种基于γ射线全谱测量,摒弃放射性核素源,采用计算机软件重写谱数据文件进行稳谱的新技术,以弥补硬件稳谱技术的不足,并使稳谱效果更好。     

勘探地球物理层析成像软件系统及其应用

本文对人工场源激发的地震波、声波、电磁波及电阻率分布而重建地下物理参数图像的理论、正反演算法、计算机软件、实验室超声波模型实验、电阻率实验等做了大量的研究,完成了由Windows95支持的勘探地球物理层析成像软件系统的研制,并介绍了三个勘探应用实例。     

A comparative review of commercially-available software for soil slope stability analysis

Summary The main purpose of this paper is to carry out a comparative review of four commercial computer programs for the stability analysis of soil slopes. The review is carried out in two parts and should prove useful for potential users of the software. Part I reviews the facilities offered in terms of the range of limit equilibrium methods, the geotechnical modelling abilities, the operational features and the supporting documentation, and includes a general impression of friendliness. Part II assesses the use, accuracy and validity of each program by presenting and discussing the results of a number of model tests. Also included is a brief discussion of slope stability analysis, in particular the limit equilibrium method. The requirements of a practical computer program for soil slope stability analysis are defined and then used as a means of assessing the effectiveness of each program.     

国家级矿产资源规划管理信息系统建设

本文阐述了国家级矿产资源规划管理信息系统建设的原则、总体思路和总体设计。详述了矿产资源规划数据库基本内容和系统模块功能。介绍了系统的应用情况、应用前景和所产生的社会经济效益。文中对矿产资源规划实施矿业权审查的流程以及所涉及的审查指标作了较详细描述,对各地开发相关信息系统具有较高的参考价值。     

线性规划在企业管理中的应用

本文是通过对青岛木器一厂的生产经营情况进行分析,综合建立线性规划(简称L.P)数学模型,然后用电子计算机求解,作出利润目标的决策和安排实现利润目标的最优生产计划。还运用解原L.P的对偶问题,求出影子价格和进行灵敏度分析,帮助企业找出生产薄弱环节,并提出内部挖潜的建议。     

OSB-1型近海测波浮标网岸站数据处理系统

本文报道OSB-1型近海测波浮标网岸站数据处理系统。介绍了将APPLEⅠPlUS微机用于该系统的设计思想和实现方法。同时还给出系统框图、各功能模块逻辑流程图以及波谱分析程序框图。对该系统的使用情况也作了简要的叙述。笔者以汇编语言为基础,采用模块化技术编制的应用软件包,使该微机数据处理的速度得到提高并减少了所需要的内存容量,满足了浮标网对岸站数据处理系统的有关要求,得到较好的应用。     

A successive elimination method for one-dimensional stock cutting problems in ship production

One-dimensional stock cutting problems can be encountered at the production stage of many areas of engineering as well as in shipbuilding and coastal structures. In this paper, a novel approach is proposed to solve the problem directly by using the cutting patterns obtained by the analytical methods at the mathematical modeling stage. By minimizing both the number of different cutting patterns and material waste, the proposed method is able to capture the ideal solution of the analytical methods. The main advantage of the method comes from the fact that an integer solution is guaranteed. However, in analytical methods it is not always possible to produce integer solutions and the linear programming algorithm must be run repeatedly to select integer solutions from the alternatives to get practical results. The proposed nesting algorithm is a low-cost and efficient tool. Minimizing the number of cutting patterns contributes to time and material savings. Also, by using this method trim loss is minimized and stock usage is maximized. The efficiency of the proposed method is demonstrated by extensive numerical results.     

工厂化鱼类养殖智能系统的研究

为保证鱼类生长的环境始终处于最佳状态，作者根据狼鲈(Dicentrarchus labrar)的生理特点(耗氧率、氮的排泄率等)建立数学模型，并设计在工厂化水产养殖中采用生物转盘、臭氧(紫外线)消毒器等设备，构建在Windows2000 Visual Basic6．0下运行的环境调控软件包系统，通过计算机技术确定养殖污水处理设备(生物转盘)及增氧、消毒设备的数量及规格，将养殖环境控制在最佳状态。