河南省水资源状况及对策研究

本文河南省水资源分布状况及开发利用现状，依据地下水动态长期监测资料，指出了地下水开采创利用中出现的一些环境水文地质问题，并提出了相应的对策。     

基于DEM的彩色地貌晕渲的制作

本文围绕计算机环境下数字地貌晕渲实现的理论与技术展开了探讨,论述了数字地貌晕渲的相关理论,介绍了数字地貌彩色晕渲色彩设计的基本方法,对数字地貌晕渲的技术过程进行了深入研究。     

基于典型事例推理的路径规划方法研究(英文)

Case-based reasoning is an AI technique in which the previous solutions are stored for future use. People are used to guiding themselves according to those routes that are stored in their memories and have been used by them before. It is just based on people’s preference to familiar routes, which are gained through the study of the cognitive activities. We propose to apply the intelligent method based on the case reasoning to path planning. It is impossible for a case base to store all the solutions to all the shortest paths; therefore, part of them should be stored. However, which routes should be stored and which should not be? How do we adapt the cases that have already been stored and how do we acquire the shortest route based on them? All these issues need to be explained by integrating knowledge of the network on account of case-based reasoning techniques. This paper suggests the case-based reasoning in another point. This means finding some irreplaceable links on the basis of the complete analysis of the problems space, which are called the must_be_passed link between the source and destination. Merely compute the shortest path case from those best exit/entry nodes of the grids to the irreplaceable links, and then add them into the case base storing for future use. This method is based on case-based reasoning technique and completely considers the properties of the problem space. In addition to the use of knowledge of the natural grid in the route network, this method is more efficient than existing algorithms on computing efficiency.     

河南省水资源状况及对策研究

本文论述了河南省水资源分布状况及开发利用现状，依据地下水动态长期监测资料，指出了地下水开采利用中出现的一些环境水文地质问题，并提出了相应的对策。     

地图矢量数据处理研究

本文以1:250万中华人民共和国大型挂图的制作研究中的数据格式转换为实例,重点讨论全数字制图环境下多源海量数据的提取和格式转换等问题,为数字地图新产品的开发提供了数据基础。根据制图基础数据的特点确定了把源数据Coverage层转化为CorelD raw能接收的DXF格式的数据转换方法,详细讨论了利用Arc/Info进行矢量数据的转换、投影变换的过程,包括数据合并、投影变换、数据提取、点状要素处理、拓扑关系的建立、比例尺控制、图层套和、数据输出等处理。     

“八五”期间河南省区域地下水水位动态

１降雨情况我省大部分地区属暖温带季风气候区，南部为亚热带向暖温带过渡地区。降雨量由南向北逐渐减少。“八五”的第一年，我省１７个地（市），除信阳、周口两市（地）降雨量略高于多年平均值外，其他各地（市）均低于当地多年平均降雨量。１９９２年，全省各地（市）...     

郑州东北郊污水灌区重金属元素对土壤的污染

根据郑州市东北郊不同污水灌区,不同深度的土壤采样分析结果,计算了重金属元素在土壤中的概率分布类型及环境背景值,论述了重金属元素对土壤的污染特点及其对农作物生长的影响,并指出了汞污染土壤的普遍性和对粮食及蔬菜质量所造成的危害。     

郑州东北郊污水灌区重金属元素对土壤的污染

根据郑州市东北郊不同污水灌区、不同深度的土壤采样分析结果,计算了重金属元素在土壤中的概率分布类型及环境背景值,论述了重金属元素对土壤的污染特点及其对农作物生长的影响,并指出了汞污染土壤的普遍性和对粮食及蔬菜质量所造成的危害。