The paper applies sdm in drawing the map of pollution areas . by synthesizing contaminated factor , saturated esdd and damp factor in pollution areas , the equal saturated esdd is presented . the isopleth map for equal saturated esdd is drawn by grid method based on kriging regression , and the isopleth map is regarded as the map of pollution areas 通过将影响污区分布的积污因素、盐密指标、湿润因素这三种因素综合为等效盐密,运用克里金法实现等效盐密的插值,最终通过网格法绘制等值线图实现了电网污区分布图计算机自动绘制。
This thesis primarily makes below the work of a few aspects : ( 1 ) the method that measuring and solution of the control point ' s coordinate , calculation of the point , solution of intersection with polygons , and calculation the quantity of ore reserves in a drawing file by computer technology ; ( 2 ) the theory and the method to draw the diagram of the equivalent line by establishing the abnormal triangle net , and ore blending with the diagram of the equivalent degree ' s line ; ( 3 ) the principle and method to automatically divide the ore , and the method to adjust to the quantity of ore and search the ore ' s information ; ( 4 ) adoption the line program to beg to solve the problem to ore blending , and establish the linear programming model and the simplification model with ore blending . ( 5 ) establish the control model with ore degree based on modem control theories 本论文主要完成了以下几方面的工作： ( 1 )利用计算机技术直接在一张现状图中，实现了控制点的测量与求解、坐标展点计算、多边形求交以及爆堆矿岩量的计算； ( 2 )提出了通过建立非规则三角网的方法来绘制等值线图的理论和实现方法，通过等品位线图指导配矿工作； ( 3 )提出了配矿块段自动划分的原理和方法，并在此基础上实现矿块矿量调整和矿块信息查询； ( 4 )采用线性规划的方法求解配矿问题，建立了配矿问题的线性规划模型和简化模型； ( 5 )建立了基于现代控制理论的品位控制模型。
At the same time , figures involving attribute data about flow field at inlet and outlet downstream or wave motion of water at the downflow head of lock chamber of siyang navigation lock were displayed through gis application system which we developed . according to data of baoying navigation lock acquired by mathematics model , figures about velocities which have the same value , velocities toward cross direction which have the same value and flow field at inlet and outlet upstream were formed . achievement data , space information and attribute information were in connection with figure so as to search for and analysis the information , which is satisfying 同时完成了江苏泗阳船闸下游引航道非恒定流及其改善措施的计算分析研究和宝应船闸上游引航道口门区水流条件计算分析研究，运用gis技术和所设计的gis应用系统对泗阳船闸下游引航道内流场以及下闸首水位波动情况进行信息显示，根据对宝应船闸的计算结果生成上游引航道口门区等流速图、横向流速等值线图和流场图，使计算分析成果数据、空间信息、属性信息与图形显示有机结合，便于查询分析，效果令人满意。
The research fruits in this article can provide the temperature isoline map of crown cantilever section and central longitudinal section of the dam , the stress isoline map of crown cantilever section and upstream and downstream surfaces of the dam , the maximal and minimal stress distribution map in dam abutment along with the height of dam , the maximal and minimal stress table of typical nodes and the maximal and minimal stress table in different elevations , and also provide reference basis for taking relative temperature control measures in the design and construction of rcc arch dam 本文研究成果可给出坝体的拱冠梁剖面和坝体中心纵剖面的温度等值线图、拱冠梁剖面和坝体上下游面应力等值线图、坝肩最大最小应力沿坝高的分布曲线、不同高程处典型点的最大最小应力值表以及不同高程处最大最小应力值表等成果，为碾压混凝土拱坝的设计和施工中采取相应的温控措施提供了参考依据。
This paper combines the critical rainfall in the typical areas of yunnan province , and carries on the analysis to the critical rainfall situation , and carries on a research to the variety regulation of the critical rainfall of the mountain flood disasters in yunnan province by the application of spacial variogram theory , and the kringing of spacial gridding methods , the inverse distance to a power method , the radial basis function method , and then draws up each isoline maps 采用空间变异理论，应用克里金空间插值分析法、反距离加权插值法、径向基函数插值法对云南省山洪灾害典型区的临界雨量的情况进行对比分析，对其变化规律进行研究，并绘制相应等值线图。
On the basis of the geochemistry digital model arithmetic of triangulated irregular network , i change the arithmetic of auto - tracing isoline . in process of auto - tracing isoline , the proplem of tracing - crossand and mini - heave was resolved . the isoline is smoothec by linear overlap algorithm . in addtion , the model can build other unit of map such as extramum point , polygon 在不规则三角网数字模型的基础上，改进并实现了等值线生成算法，解决了等值线生成中的分叉问题，解决了等值线上的小凸起问题；对等值线采用线性迭代算法进行了圆滑处理；提出延伸三角网算法，用于实现了开等值线的闭合；生成用于地学分析的区域图元，等值线图元，极值点图元等。
The paper presents several aspects in partition rectification and visualization of raster image . . adopt technology of visualization for scientific calculation , vector diagram of deformation 、 contour chart of deformation and drawing of three - dimensional are realized . . delaunay tin in view of deformation feature is constructed on base of selected grid control points and methods and mathematical models for partition rectification are realized based on the delaunay tin . . software of geometric rectification for large scales are realized and applied in project 本论文针对栅格影像的变形可视化及分块纠正展开研究，取得了以下几方面的研究成果：一、采用科学计算可视化技术，绘制变形矢量图、变形等值线图和三维效果图，实现了栅格影像变形特征的可视化；二、提出了在格网控制点（ gcp ）数据基础上选择性构造顾及变形特征的delaunay三角网,并基于构造的三角网实现了分块纠正的方法和数学模型；三、采用vc编制了影像几何纠正软件，实现大比例尺扫描地形图的纠正，并在工程中得到应用。
5 , such results as the list of the reaction force , deformation figure of the truss the contour of the nodes displacement , the contour of the element stress , and the contour of the node stress , are attained under the static force , the analysis of the finite element show that the maximum stress reaches the value of 285mpa , and then the frame body has the larger stress concentration in this position , if the welding around is not adopted 通过ansys5 . 5软件有限元分析，得出了各支座反力和节点应力列表，以及桁架在静力作用下的变形图、节点位移等值线图、单元应力等值线图、节点应力等值线图。有限元分析计算表明，在不采用周边焊的情况下最大应力可达285mpa ，具有较大的应力集中。
Then , the chaser ' s two orbit roots are selected as variable and visualizing the simulation by contour plot . this part of research draws the conclusion the same as the first part when the target ' s orbit is circular orbit , while the selected two variable can be wildly changed if the target ' s orbit is elliptical orbit . next , wait time before orbit maneuver is simulated 其次,利用可视化的等值线图研究了追踪器轨道两个参数为变量的情况下大范围轨道机动问题,分析表明对圆轨道目标器交会机动时,追踪器轨道根数不宜与目标器轨道根数相差过大,而对椭圆轨道目标器交会机动时,追踪器轨道根数可选范围较大,机动策略和方法富于弹性。
Because of the complexity of calculation result data , and in order to simplify the analysis of results , this paper only provides annual temperature isoline map of february , may , august and november during construction , temperature isoline map of the first , fifth , tenth , twentieth and thirtieth year during operation , duration curve of temperature and stress of typical point at different elevation , the maximal stress distribution along dam height , point at different elevation , the maximal stress distribution along dam height , and the maximal and minimal temperature and the maximal tensive stress and its position of every month 因计算结果数据量非常大，为便于成果分析，本文仅给出施工期每年2 、 5 、 8 、 11月份和运行期第1 、 5 、 10 、 20 、 30年的温度等值线图，坝体不同高程典型点温度和应力历时曲线图，最大应力沿坝高分布图，逐月最高、最低温度和最大拉应力值及相应的位置等。
