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101.
面向变化监控的动态电子地图设计 总被引:4,自引:0,他引:4
以动态现象的表达、监控为主要任务的电子地图,具有四个功能:过程再现、实时跟踪、变化推演和变化模拟,分别对应时态特征上的过去式、进行式、将来式和虚拟语气。其设计原理与其他电子地图的差别表现为:地理背景底图的动态性,比例尺设计与时间有关,符号设计需扩充Bertin参量体系而引入动态参量,要顾及用户对变化过程的交互式控制。本文从地图设计角度讨论了这类地图的设计原理与方法,并应用到面向水路航务管理的电子航道图设计中,实现航标位置、工作状态的全天候远程监控。 相似文献
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103.
三维地图符号视觉参量研究 总被引:7,自引:0,他引:7
在常规地图符号参量体系上,通过引入动态特征、交互式操作等方面的参量,提出了三维地图符号的视觉参量,它由状态、动态变化和操作三个方面的参量组成,并采用认知实验研究了这些符号参量在质量特征、数量特征、关系特征以及动态特征等信息表达上的应用及功效. 相似文献
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105.
It has been asserted by Clough (1952) , amongst others, that British Military Survey was poorly prepared for the outbreak of war in 1939. An examination of the work carried out between the wars by the Air Survey Committee would seem to contradict that view. In this paper, the work of the Air Survey Committee is discussed and a brief assessment made of the impact of its work on British mapping during the Second World War. 相似文献
106.
介绍了在MAPGIS上进行的武警指挥系统的设计,系统采用GIS和GPS结合的技术,实现了信息管理,信息查询,战术标图,战术计算、作战文书、作战文书、动态目标监控以及三维电子沙盘等功能。 相似文献
107.
As an instrument of national strategy, the United States Army has served the American people well for more than two centuries. Its fundamental mission has always been to fight and win America's Wars. As we have moved from the bi-polar nature of world dynamics to that of the new global neighborhood, the American Army has seen an increase in missions related to peacekeeping, disaster relief, and humanitarian actions. From a geography perspective, the Army must operate in numerous countries simultaneously. To succeed, the Army must go beyond physical accomplishments: it must interact and communicate with nations at a level of shared understanding and enthusiasm of each others culture. The American soldier must understand the cultural nature of geography as well as the physical. The hypothesis of this paper is: There is an urgent need for the men and women of the Unites States Army to have a firm conviction that people of other cultures have beliefs, value systems, and customs that result in behaviors and perceptions that may be vastly different than ours. . .and that those differences are legitimate. Beginning with mistakes made during the Vietnam war, the authors give examples, current as well as past, of cultural illiteracy on the part of the military. The role of the Army in the new world order is then addressed with emphasis on the types of missions to be expected in the 21st Century. The authors point out that significant efforts to grasp customs of foreign countries to which Army units are deployed have been made during recent years; however, much remains to be accomplished. The solution to a lack of cultural awareness is given in the form of improvements to the Army military education system. An overview of the current training environment, with its strengths and weaknesses, is provided as a precursor to recommendations for future training. A multitiered education system is proposed in which cultural awareness education is provided at all levels of authority, from the basic training recruit to senior officers. Given that programs of instruction are already full, it will take a combination of command emphasis and innovation to accomplish the goal of inculcating cultural awareness in the American Army. The paper concludes with the position that the only way the Army can accomplish its changed global missions is by first winning its own war against cultural illiteracy. 相似文献
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109.
基于出版的地图符号库系统的建立 总被引:2,自引:1,他引:2
提出并解决了基于出版的地图符号库需要解决的关键技术:符号制作软件的设计、符号与属性库的连接、RGB色彩到CMYK色彩的转换、基于出版的地图符号分层、PS文件的生成;在此基础上论述了全数字出版系统中建立地图符号库系统的方法。 相似文献
110.
点状、线状和面状地图符号数学定义的研究 总被引:5,自引:2,他引:5
根据集合论和拓扑学的有关理论,导出了点状地图符号、线状地图符号和面状地图符号的数字定义。阐述了图形和背景的相互依存关系以及它们在传输地理信息中的整体功能。 相似文献