REVIEWS OF GEOGRAPHIC SOFTWARE

Geographic Software Reviewed in this article: APPLEPIPS IBM EDUCATIONAL SOFTWARE SERIES: EARTH SCIENCE SERIES . Moisture in the Atmosphere, Hydrologic Cycle, Surface Water and Ground Water. MINI-MAX MULTIMAP . Barry R. Cohen . Planning Data Systems WORLD GEOGRAPHY SERIES, U.S. GEOGRAPHY QUIZ, U.S. GEOGRAPHY ADVENTURE     

SOFTWARE REVIEWS

Electromap World Atlas , Version 1.1. Interactive Population Statistical System , Version 1.0. Jerry W. Wicks and Jose Luiz Pereira de Almeida MATHCAD , Version 2.5. Memory Mate. Micro DEM +, Version 5.21. Peter Guth NCSS – Number Cruncher Statistical System , Version 5.02. Dr. Jerry L. Hintze     

REVIEWS OF GEOGRAPHIC SOFTWARE

CHAOS CLlM 3.77 LP88 and TPR088 MAPEDIT PRODESIGN II RANDMAP SPATIAL AUTOCORRELATION SIMULATION GAME . Daniel A. Griffith STATA THINKTANK NOTEBOOK II     

规则建筑物真三维摄影测量视图

提出一种用摄影测量方法获取的规则建筑物几何模型和表面纹理，重建真实感３Ｄ图形的方法，用以扩展摄影测量制图系统，适应现代规划、设计领域决策的需要，产生较大比例尺的大区域景观图。     

用于土层地震反应计算的绘图软件包

详细地介绍了作者编制的用于对土层地震反应计算的原始数据和计算结果进行了图形 制的软件包。该软件包采用多级菜单提示，将数据组织，图形显示，高精度图形打印输出合为一体，适用于ＩＢＭ各种微机机型和兼容机，以及现有的多种针式，激光，喷墨打印机和部分绘图仪，可广泛应用于工程地震和地震工程的研究。     

VB环境下交互式GMT地学绘图软件的设计及实现

本文设计基于VB环境下的交互式GMT绘图软件。详细阐述VB环境下交互式GMT绘图软件总体结构,介绍GMT概述、站点分布图绘制、速度场图绘制、梯度色阶热力图绘制、时间序列图绘制、等高线图绘制和地震频率图绘制等七大模块功能,并对软件实现中相关技术问题给出处理办法。软件运行结果表明:该软件功能强、可靠性高、兼容性强,为地球科学领域各种类型的数据分析和可视化表达提供有力的工具。     

ARC-SPLINE AND ARCLET PROCESSING

This paper presents a new spline called arc spline.It takes two arcsconnecting adjacent points among a sampled series,with known tangental of eachsampled point.The calculation for the parallel.the curve length and the segment-ing point coordinates are simple,thus making map symbol generation simplified.When "arclet" occurs,some special processing must be taken.     

Assessment of manoeuvring performance of large tankers in restricted waterways: a real-time simulation approach

During the past 30 years there has been a steady growth in the size and number of ships that use the Strait of Istanbul (Bosporus) which is one of the most hazardous, crowded, difficult and potentially dangerous waterways in the world. There have been over 200 accidents over the past decade resulting in loss of life and serious damage to the environment. This paper presents the results of a real-time ship manoeuvring simulation study investigating the manoeuvring performance of large tankers in the Bosporus. The study was conducted with a ship manoeuvring simulator which is capable of subjecting a given hull form to any combination of environmental conditions, i.e. wind, current and wave drift forces. The results indicate that when realistic environmental conditions are taken into account the size of ships which can navigate safely in compliance with the traffic separation lanes is limited.     

井中CT层析成象反演

本文介绍了射线法CT 层析成象的基本原理,利用代数重建法进行图像重建的方法及在 IBM—PC微机上实现该算法的途径和框图。文章还讨论了影响图象质量的因素和处理方法。