交互式洪水预报系统及关键技术研究

介绍了交互式洪水预报系统的概念和基本结构，分析了实现交互式预报的区域拓扑连接、作业表、模型参数优化、交互修正等关键技术，并以淮河交互式洪水预报系统为例，阐述了系统的组成、实时作业预报的数据流程和应用成果。在分析我国暴雨洪水特性和自然地理条件的基础上，指出了在我国开发交互式洪水预报系统的必要性和应该注意的几个主要问题。     

公路隧道辅助设计软件的新思路研究

研究了现有公路隧道辅助设计软件的思路和技术特点,结合公路隧道设计过程的实际需要,提出了公路隧道辅助设计软件的新思路,即建模和出图采用参数式与交互式相结合,计算、优化与出图集成统一。这些思路已经在作者开发的公路隧道设计软件中实现,证明了技术的可行性。该软件在同济曙光软件平台上开发,具有修改、实时更新的图形建模和出图功能,结合施工过程的有限元及其它数值方法的分析计算功能,并采用遗传算法等多种优化方法对结构进行最优化设计,具有后处理显示、可视化图纸管理、图纸库等功能。该软件能使整个公路隧道设计、计算、出图在统一的环境下完成,能有效提高公路隧道设计的效率。     

遥感技术在岩溶区1:50000区域地质调查中的应用——以黔西北地区为例

以西南岩溶区特殊的资源和环境特点为导向,利用多源、多时相、多尺度遥感数据,采用遥感信息计算机自动提取和人机交互解译相结合的技术方法,将遥感技术系统应用于岩溶区1:50000区域地质调查工作中,提供系列的基础图件辅助岩溶区区域地质填图,提高了岩溶区1:50000区域地质调查的效率。初步建立了适合西南岩溶区的1:50000区域地质调查遥感技术方法体系,快速准确地解译出了岩溶区特殊的地质、地貌、环境、水文等要素,为特殊地质地貌区地质填图提供技术支持。      

交互正交试验设计在Mn/Ce催化剂制备中的应用

利用交互正交试验设计对柠檬酸络合法制备Mn/Ce复合氧化物催化剂(简称Mn/Ce催化剂)的制备条件进行了优化,重点考察金属配比(Mn∶Ce=7∶3、1∶1、3∶7)、焙烧温度(350℃、500℃、650℃)、焙烧时间(2 h、3.5 h5、h)等3种因素对催化湿式氧化(CWAO)降解正丁酸过程中Mn/Ce催化剂活性的影响。结果表明,金属配比和焙烧温度对催化剂活性有显著影响(置信度p分别为99%和95%),焙烧时间对催化剂活性无显著影响(p=90%),焙烧温度与金属配比之间有显著的交互作用(p=99%),得到的最佳制备条件为:Mn∶Ce=3∶7、焙烧温度500℃和焙烧时间5 h;并对最佳制备条件下得到的Mn/Ce催化剂进行XRD、BET和SEM等表征。     

中国电子地图发展中的可视化问题

1IntroductionSpatial data can be visualized and explored in various ways. Developments in hardware and software have led to and will surely continue to stimulate novel methods for visualizing spatial data and creation of electronic atlas information syste…     

环境信息科学可视化表达与交互研究

灵活的科学可视化表达与交互手段能有效地展示隐藏在数据背后的空间特性及空间关系.在分析科学可视化概念和特点的基础上,探讨其在动态环境信息表达、环境信息可视化交互探索分析方面的应用,并以江苏省城市空气质量评价专题为例,采用ArcGIS Server基础平台,利用rich internet application(RIA)技术,对Web环境下环境信息的科学可视化进行实例研究.     

融合VISI的Web GIS人机界面交互设计

The fusion of VlSI （visual identity system Internet）, digital maps and Web GIS is presented. Web GIS interface interactive design with VISI needs to consider more new factors. VISI can provide the design principle, elements and contents for the Web GIS. The design of the Wuhan Bus Search System is fulfilled to confirm the validity and practicability of the fusion.     

桩-土-承台结构在波浪力作用下的力学效应分析

在港口桥梁工程和海洋工程中,一般将桩从桩-土-承台结构中分离出来,单独计算波浪力对桩的作用。在提出波浪力作用下桩-土-承台结构相互作用模型的基础上,结合工程算例,进行了桩-土-承台结构在波浪力作用下桩的荷载和弯矩计算分析,结果表明：在不考虑波浪力的情况下,计算结果跟规范方法较为接近,验证了桩-土相互作用模型的适用性。在此基础上迭加波浪力,将波浪力和桩-土-承台作为一个完整的系统研究,随着承台所受外力、波浪力、桩侧地基土的变化,分析了桩-土-承台结构在波浪力作用下的受力效应。     

Do choropleth maps linked with parallel coordinates facilitate an understanding of multivariate spatial characteristics?

Our study has three objectives. We want to investigate (1) whether choropleth maps linked with parallel coordinates help people understand the locations of vulnerable places and the factors making these places vulnerable, (2) whether sparklines that imitate the polylines from a parallel coordinate plot support the understanding of the information provided in that plot, and (3) whether a multiple-view geovisualization approach might be intuitive and useful also for nonexperts. Although we base our work on the functionalities available in the tool called ‘ViewExposed,’ we intend to outline more general conclusions on whether multiple linked views facilitate the understanding of multivariate spatial characteristics. An empirical study with 53 individuals was conducted to obtain insights on these objectives. Our task-based assessment considered the ways in which participants understood the dynamic linking capabilities. Some of the key findings are as follows: (1) even nonexpert users are able to use parallel coordinates linked with choropleth maps; however, only those with extensive inference-making abilities will do so efficiently; (2) parallel coordinates sparklines work as an independent component facilitating the understanding of multivariate data; and (3) the intuitive nature of a multiple-view geovisualization tool is not enough to encourage people to use it.     

The characteristics of signal versus noise sst variability in the north pacific and the tropical pacific ocean

Total sea surface temperature (SST) in a coupled GCM is diagnosed by separating the variability into signal variance and noise variance. The signal and the noise is calculated from multi-decadal simulations from the COLA anomaly coupled GCM and the interactive ensemble model by assuming both simulations have a similar signal variance. The interactive ensemble model is a new coupling strategy that is designed to increase signal to noise ratio by using an ensemble of atmospheric realizations coupled to a single ocean model. The procedure for separating the signal and the noise variability presented here does not rely on any ad hoc temporal or spatial filter. Based on these simulations, we find that the signal versus the noise of SST variability in the North Pacific is significantly different from that in the equatorial Pacific. The noise SST variability explains the majority of the total variability in the North Pacific, whereas the signal dominates in the deep tropics. It is also found that the spatial characteristics of the signal and the noise are also distinct in the North Pacific and equatorial Pacific.