地图集投影系统方法研究

本文较全面地研究了地图集投影系统的设计方法。包括系统论的引用；适用于地图集投影系统设计的新的地图集分类；地图集投影系统设计思想与步骤；地图集投影系统设计方法的发展趋势等内容。     

我国城市（城镇）居民地称谓及地图标注问题刍议

文章对我国城市（城镇）居民地称谓及地图表示中出现的一种错误趋向及原因进行了较详细的分析．在其基础上．探讨了它们的科学化、规范化问题。     

地图信息的数字化处理

根据地图投影坐标系，经过数学推导，将地图信息要素进行数字化，通过软件程序的实现，解决了大、中比例尺地图信息数字化的关键技术，该方法设计简单，特别适合自行开发专业应用系统时引用。     

综合利用测井曲线研究沉积特征及绘制小层岩相图

油水流动的基本单元是单砂层,而单砂层的分布取决于沉积环境,因此合理开发油气田,必须研究小层沉积相。其研究步骤:①从岩芯井着手,观察岩性、韵律、粒序、沉积构造、粒度分布特征和古生物相等,综合判定亚相;②建立小层各亚相的组合测井曲线标准图版,将各井的组合测井曲线与其对比、定相;③绘制小层岩相剖面图、等厚图及平面相带分布图;④分析图件,对沉积环境演化进行探讨。     

Distribution of thermal areas on an active lava flow field: Landsat observations of Kilauea,Hawaii, July 1991

A Landsat Thematic Mapper (TM) image acquired on 23 July 1991 recorded widespread activity associated with the Episode 48 of the Pu'u 'O'o-Kupaianaha eruption of Kilauea Volcano, Hawaii. The scene contains a very large number (>3500) of thermally elevated near infrared (0.8–2.35 m) pixels (each 900 m²), which enable the spatial distribution of volcanic activity to be identified. This activity includes a lava lake within Pu'u 'O'o cone, an active lava tube system (7.9 km in length) with skylights between the Kupaianaha lava shield and several ocean entry points, and extensive active surface flows (total area of 1.3 km²) within a much larger area of cooling flows (total16 km²). The production of an average flux density map from the TM data of the flow field, wherein the average flux density is defined in units of Wm^-2, allows for the chronology of emplacement of active and cooling flows to be determined. The flux density map reveals that there were at least three breakouts (>5000 Wm^-2) feeding active flows, but on the day that the data were collected the TM recorded a waning phase of surface activity in this area, based on the relatively large amount of intermediate power-emitting (cooling) flows compared to high power-emitting (active) flows. The production of a comparable flux density map for future eruptions would aid in the assessment of volcanic hazards if the data were available in near-real time.     

Advances in travel geometry and urban modelling

Urban travel geometry is a generalization of patterns of movement in cities and regions where route configuration and prevailing traffic speeds constrain or direct movement in distinctive and repeatable patterns. In this paper we use these properties to construct time surfaces on which distance equates to the time of travel in the urban plane. Such surfaces can be two- or three-dimensional and are useful in the study of urban structure, locational analysis, transport planning and traffic management. A particular niche addressed in this paper is non-conformal time surface transformations in which speed or the cost of travel is constrained according to co-ordinate directions. It is argued that such models may be more suited to gridded and orbital-radial cities than previously used conformal transformations. After explaining the rationale behind the approach, a mathematical basis is developed and several calibrated examples are provided based on regions in the UK. The paper concludes with some examples of potential applications, and an annex provides a detailed mathematical framework. This revised version was published online in August 2006 with corrections to the Cover Date.     

新版《南极洲全图》的设计特点

从新版《南极洲全图》的数据获取和数学基础,遥感影像的校正方法,在CorelDraw下的数据处理以及地图的色彩设计等方面,探讨了基于彩色地图桌面出版系统生产超大幅面、多源信息集成地图的技术方法。     

城市导航电子地图的道路模型

随着GPS／GIS／GSM车辆导航和监控系统的成熟和普及，导航系统电子地图中的道路数据模型的重要性日益突出。在非导航应用中较少研究的道路交通线模型，在此成了无法回避的且必须理清的问题。本文详细分析了现代城市路口的通行规则，论述了单线模型的缺陷，设计了适用于导航的双线多结点道路模型。     

彩色扫描地形图的自动分色与处理

提出了一种基于颜色特征的地形图要素自动分层的方法，并针对地形图上的图形要素特征，提出了对等高线分版图进行后处理的算法，分析和讨论了该方法和算法的实验效果及效率。     

用Visual Basic编制宗地图绘制程序

对宗地图绘制程序的开发过程进行了阐述,并介绍了其应用实例。