基于VB的孕镶金刚石钻头配料计算软件

热压金刚石钻头胎体配料计算较为繁琐,并且经常需要根据钻头使用效果及时调整配方,传统人工计算法效率低,容易引起计算偏差。基于VB开发平台,设计研制了一种热压孕镶金刚石钻头配料计算软件。该软件仅需要输入钻头参数和胎体配方,就能方便计算出胎体所需的各种粉末用量和金刚石用量,并且能将计算结果存档和打印,实现钻头生产的科学化管理。     

Visual ModFlow数值模拟在陕化新开水源地勘察中的应用

陕化需水量不断增加,原水源地已不能满足用水要求,需要寻找新的水源地。新开水源地开采井位于遇仙河和石堤河之间,渭河大堤以南200m左右。本文对新开水源地建立了水文地质概念模型,并运用目前国际通用的可视标准软件Visual ModFlow对勘察区地下水进行了数值模拟计算和预测,得出了该区在多年平均降水量的条件下,新增加的开采量主要靠渭河激发补给和蒸发量减少的结论。     

基于多尺度DTM的坡式梯田三维可视化研究

针对黄土高原梯田可视化问题,以往的相关研究基本解决了水平梯田的三维可视化,但关于坡式梯田的研究尚为空白。坡式梯田因其具备更加突出的人工微地形特性,难以通过传统的DEM可视化方法实现其三维可视化。该文提出了多尺度DTM叠加法,利用偏移线法、高程增量法等方法提取田埂坡度特征,将研究区的低分辨率格网DEM(G-DEM)、坡式梯田分布区的高分辨率坡度DTM及G-DEM融合为一体,对坡式梯田进行三维叠加可视化。与传统G-DEM可视化方法相比,多尺度DTM叠加可视化法不仅所需数据存储量更小,而且具备更加逼真的坡式梯田三维可视化效果,能够有效显示坡式梯田的平坦田面和陡直田埂,是对基于DEM的梯田地形三维可视化的有益探索。     

Landslides triggered by the 22 July 2013 Minxian–Zhangxian,China, Mw 5.9 earthquake: Inventory compiling and spatial distribution analysis

On July 22, 2013, an earthquake of Ms. 6.6 occurred at the junction area of Minxian and Zhangxian counties, Gansu Province, China. This earthquake triggered many landslides of various types, dominated by small-scale soil falls, slides, and topples on loess scarps. There were also a few deep-seated landslides, large-scale soil avalanches, and fissure-developing slopes. In this paper, an inventory of landslides triggered by this event is prepared based on field investigations and visual interpretation of high-resolution satellite images. The spatial distribution of the landslides is then analyzed. The inventory indicates that at least 2330 landslides were triggered by the earthquake. A correlation statistics of the landslides with topographic, geologic, and earthquake factors is performed based on the GIS platform. The results show that the largest number of landslides and the highest landslide density are at 2400 m–2600 m of absolute elevation, and 200 m–300 m of relative elevation, respectively. The landslide density does not always increase with slope gradient as previously suggested. The slopes most prone to landslides are in S, SW, W, and NW directions. Concave slopes register higher landslide density and larger number of landslides than convex slopes. The largest number of landslides occurs on topographic position with middle slopes, whereas the highest landslide density corresponds to valleys and lower slopes. The underlying bedrocks consisting of conglomerate and sandstone of Lower Paleogene (E^b) register both the largest number and area of landslides and the highest landslide number and area density values. Correlations of landslide number and landslide density with perpendicular- and along-strike distance from the epicenter show an obvious spatial intensifying character of the co-seismic landslides. The spatial pattern of the co-seismic landslides is strongly controlled by a branch of the Lintan-Dangchang fault, which indicates the effect of seismogenic fault on co-seismic landslides. In addition, the area affected by landslides related to the earthquake is compared to the relationship of “area affected by landslides vs. earthquake magnitude” constructed based on earthquakes worldwide, and it is shown that the area affected by landslides triggered by the Minxian–Zhangxian earthquake is larger than that of almost all other events with similar magnitudes.     

地质花纹的生成及应用

针对CorelDRAW、Surfer和Grapher等软件在地质花纹设计方面的空缺,在构图上总结分析了地质花纹分布规律,提出利用Visual Basic 2010控制CorelDRAW X4软件自动化制作方法;填充时可根据图面,调整花纹的大小、疏密度、颜色等,生成的花纹可应用于CorelDRAW、Surfer、Grapher等软件。     

用VB2008和Excel2007开发软弱下卧层强度验算程序

使用Visual Basic 2008的ActiveX技术引用Excel 2007,实现了软弱下卧层强度自动验算程序,能够满足工程验算要求,应用效果良好。     

Seeing the forest and the trees: Facilitating participatory network planning in environmental governance

Governance processes to address environmental change involve many different actors from multiple spatial, temporal and socio-political scales, not all of whom are connected by hierarchy and whose actions cannot always be mandated. In the environmental governance literature, Social Network Analysis (SNA) has been found useful in understanding complex governance arrangements. In this paper we present and reflect on our experience with the Net-Map tool for participatory network mapping. The Net-Map tool was applied in three transdisciplinary case studies for three different purposes: (a) to contribute to an improved understanding of biodiversity knowledge flows in Europe, (b) to explore the interplay between actors with influence on water, agriculture, and energy developments at the Blue Nile in Ethiopia, and (c) to understand the challenges facing stakeholders engaged in conservation and economic development in a Southeast Asian mountain range. The case studies explore how network maps can serve as boundary objects to engage stakeholders of diverse points of view and jointly design strategies to address governance challenges. More specifically they show how network maps are used to gain a better understanding of governance situations, to help stakeholders identify strategies for navigation of the complex networks in which they are embedded and to support transdisciplinary research processes. We close with some reflections on the potential and limitations of the Net-Map tool in facilitating multi-stakeholder processes and disentangling complex governance arrangements.     

用VB语言实现地震观测资料格式转换

VB编程语言提供了图形环境 ,能可视化的设计窗体和控件。本文介绍了应用该设计语言的特性如何实现地震资料的格式转换     

混合编程技术在台风资料图形化分析中的应用

详细论述了Visual Basic和Visual Fortran混合编程的两种技术方法:Visual Basic直接调用Visual Fortan预编译生成的可执行文件以及基于Win32动态链接库(DLL)进行参数传递.并利用台风资料图形化分析实例对开发的具体步骤进行阐述,为解决数值计算和图形操作界面开发的技术难题提供有效的方法.     

基于CorelDRAW X6的专题地图统计图表自动化实现

凭借卓越的图形、文字编辑功能,CorelDRAW颇受制图人员的青睐,尤其在专题地图的设计与编绘中扮演着重要角色。文中基于专题地图统计图表的快速准确绘制的需求,结合ActiveX Automation和ADO数据库访问技术,利用Visual Basic语言在CorelDRAW X6中进行二次开发,实现多种常用统计图表的自动化生成,为今后各类专题地图的内容表达提供借鉴与参考。