基于GIS的商业网点灰色建模研究及应用

针对商业网点管理中对销售预测和网点选址的需求,根据商业网点信息的特点,将灰色理论和GIS结合起来建立了基于GIS的灰色预测模型和灰色选址模型,并将模型用于某品牌啤酒商业网点管理系统中,取得良好效果.     

结合GIS与模糊评价法的快速选择雷达阵地方法

雷达阵地选择的优劣和进度直接关系到雷达兵器的战术技术性能和作战效益的发挥.为了在雷达阵地选择中快速处理繁多的数据和进行定量分析,利用GIS技术分析处理影响雷达阵地选择的诸多因素,采用模糊评价方法来排列备选阵地的优劣次序,可在较短时间内完成合理的雷达阵地选择.实例分析结果与专家实际评判结果非常接近且耗时少、主观因素影响小,为雷达阵地选择提供了一条有效的途径.     

Requirement of ultra-high voltage GIS arrester to voltage gradient of metal-oxide varistor

The surge arrester with excellent protection characteristics would decrease the overvoltage level ap- plied on the power apparatus to reduce their insulation levels and manufacturing bottleneck. The arrester for the 1000-kV ultra-high voltage ac power transmission system is designed as tank-type structure. The field-circuit combination numerical method combining the three-dimensional finite element method with circuit is proposed to analyze the potential distribution of GIS arrester. By comparing several design schemes, the most effective method to improve the potential distribution along the varistor column is to increase the voltage gradient of the ZnO varistor. Synthesizing several influential factors, the suitable voltage gradient of ZnO varistor should be controlled to 435 V/mm, and the resulted nonuniform degree of the potential distribution along the varistor column inside the GIS arrester would be controlled smaller than 10%. The result in this paper provides the fundamental technical index for the study of the high voltage gradient ZnO varistors.     

GIS专业学生软件开发能力培养的探讨

针对当前GIS用人单位的招聘现状,论述了GIS软件开发能力培养的重要性,剖析了造成GIS学生软件开发能力低下的原因,并结合江西理工大学GIS本科专业软件开发能力人才培养的实践,探讨了GIS专业学生提高开发能力的方法和途径。     

基于GIS的土地税源管理系统的设计与实现

设计并实现了一个基于GIS的税源管理系统,该系统能够方便的实现对税务监督、稽查、税源分析等方面直观化信息管理.与其它同类系统相比较,本系统进一步实现了对税源的用地情况——税源用地界址图的管理,从而使得税务用户在进行税务管理业务中更加方便和直观.     

“地理信息系统”实验教学改革研究

目前军事领域的信息化建设已经离不开地理信息系统(GIS)的支持。针对地理信息系统的实际应用,立足于军事需求,充分考虑学员特点,将GIS知识与指挥作战知识结合,精心设计了"地理信息系统"的实验内容,通过目标导向型分步骤的实施以及问题导向型学习指导学员学习地理信息系统相关知识,为学员将来使用信息化的应用系统打下了良好的基础。     

AutoCAD地形图数据转换为GIS空间数据的技术和应用探讨

本文首先简要介绍了Auto CAD数据与GIS数据的特点,并在此基础上对Auto CAD地形图数据转换为GIS空间数据的技术与应用进行论述。期望通过本文的研究能够对提高数据转换效率有所帮助。     

Spatial variability of Soil Nutrients and Influencing Factors in a Vegetable Production Area of Hebei Province in China

This study was conducted to determine soil nutrient spatial variability and the factors influencing it in a vegetable production area using traditional statistics and geo-statistics. The study area encompassed 55 ha and consisted of 182 farmer's plots belonging to six production groups in the Yutian county of China. Two hundred and seventeen soil samples were collected on a 50×50-m grid at depths of 0–20 cm prior to the plots being sown for cabbage. Vegetable production history, including varieties, rotation systems and fertilizer use, at the sampling sites was also examined. Soil pH, organic manure (OM), NO₃⁻–N, available P, K, Zn, and other nutrients and particle size were measured. The results showed that N, P, K and Zn were the main limiting nutrient factors in the soil. Distinct semi-variance structures of spatial variability were observed for soil NO₃⁻–N, available P, K and Zn, with the range of spatial correlation being 204–348 m. Significant spatial distribution similarity was found for soil NO₃⁻–N, P, K and Zn, with relatively high contents of all these nutrients in some areas of the study area and relatively low contents in other areas. The correlation of soil NO₃⁻–N, P and K content with vegetable production history and fertilizer application rates (N, P₂O₅ and K₂O) suggested that vegetable variety and history of fertilizer use are important factors to be considered in the development of a soil nutrient management program in the study area.     

抚顺石油化工公司热电厂66 kV电力系统技术改造

介绍了抚顺石油化工公司热电厂66 kV电力系统现状,对技术改造的方案及方案比较、短路电流计算,对 SF6组合电器(GIS)、继电保护及计算机监控系统等先进设备优化设置进行了研究.     

开源GIS软件梳理及在水利行业应用中的组合应用

本文按照典型的WebGIS系统的构建过程,梳理了数据加工、数据存储、地图发布、空间分析、前端展示五个环节常见的开源GIS软件。从功能、易用性、使用的广泛性和软件许可几个方面对开源GIS软件进行了筛选,并且根据不同的应用场景,构建了软件的组合方案,提供了系统案例。为开源GIS软件在水利行业中的应用提供了很好的指导作用。