Design and Implement of WebGIS Based on SVG

SVG based on XML is a kind of language describing 2D vector graphics.It is usability and applicability to set up WebGIS.The paper puts forward a system structure of WebGIS based on SVG,which has been applied to campus electronic map system of Chongqing University.It has been proved the method is feasibility and practicability.The paper sets forth some key techniques of implement of the system in detail: coding method of organizing SVG spatial data;generation of SVG electronic map;storage of SVG spatial data and implement of client.     

Untersuchungen zur Nutzbarkeit des generativen Speicherpotentials von indeterminierten Ackerbohnengenotypen (Vicia faba L.)

Investigations on the utilization of the generative storage potential of indeterminated field bean genotypes ( Vicia faba L.)
The gradation in seed yield between and within the inflorescences of a field bean plant results from a hierarchical control by way of internal competition in connection with hormonal regulation. Following this hypothesis in genotypes with different yielding capacity (2 inbred lines, 1 hybrid) the two proximal flowers/inflorescence of the nodes 3–6 (counted from the bottom of the plant) were either removed or treated with growth regulators. AMO-1618 was applied for inhibition of the gibberellic acid biosynthesis, or chlorflurenolmethylester (CFM) for reduction of indole-3yl acetic acid translocation as both phytohormones might be concerned with the hierarchical control of the storage system. — Independent from yield level a reduction of the used storage potential in control plants up to 50% by treatments was fully compensated for in other regions and positions of the plant. AMO-1618 application in some cases indicated an increased seed yield/plant, whereas CFM only increased the number of sterile pods/plant. These effects are discussed in relation to the storing efficiency and to yield stability of an indeterminated faba bean plant.     

Finite Element Programming Based on Template Chain Structure

Traditional Finite Element Method is the structuralization programming method and the structuralization language (such as FORTRAN). Its data store uses fixed array structure, which makes the expanding ability of program limited, code's reuse ratio low, debugging complex. The template is an opposite new important characteristic of the object-oriented programming language C++. The template can quickly establish class library so as to increase greatly the development speed of the large software. The object-oriented programming concept is applied to finite element method. According to the nature of the finite element analysis, the classes and their methods, which describe virtual element, node, material etc., have been developed and implemented using the object-oriented programming language C++. The elements, nodes and materials are stored by chain. Many type's elements are stored mixedly by polymorphism characteristic. The program is implemented and a instance is given to show the programming of finite element method. The results show that the period of programming and debugging is obviously shorter than that of traditional method; the code's utilization ratio is also increased obviously.     

The Implementation Study on The Modeling of Drected-gragh With Weightings Based on The BOM of Product

The nodes of BOM may appear repeatedly in the different layers. While the structure of traditional tree model can not express the relation between these nodes expediently. By analyzing the localization of tree model BOM, this paper studies the essential structure of BOM and puts forward the drected-gragh with weightings of BOM. Then it provides corresponding realization of relation database and studies the method of maintenance. It also discusses the expansion of attribute based on enterprise' s requirement. Finally it provides the thinking of searching, relevant algorithm and the method of programming language realization. This kind of BOM offers foundation for the integration of information and data in PDM/CAPP/CIMS/ERP.     

Learning Causality Diagram Structure Based on Genetic Algorithm

The Causality Diagram theory,which adopted graphical expression of knowledge and direct causality intensity of causality,overcomes some shortages in Belief Network and has evolved into a mixed causality diagram methodology coped with discrete and continuous variable.But it is difficult that the structure of Causality Diagram given by expert.Because the complexity of causality diagram structure goes up exponentially through the number of the vertex's increasing,it is NP-hard problem to find the most possible structure from a set of data.The authors discuss approaches and present Genetic Algorithm,to find the most possible structure from a set of data.Experiment shows the method is effective.     

基于决策树方法的淡水沼泽湿地信息提取——以扎龙湿地为例

为了及时准确地获取湿地基础信息,对湿地进行动态监测和保护。以扎龙湿地为研究区,以区域湿地遥感信息提取为目标,采用TM影像数据、DEM数据、归一化植被指数、纹理信息等复合识别指标构建决策树模型,对研究区不同地类进行分类。然后与传统的最大监督分类法所得到的结果进行对比。结果表明,采用基于指数的决策树分类方法对扎龙湿地类型进行分类,较传统的最大似然监督分类精度提高了14.6%;总体Kappa系数提高了0.1751,分类精度较监督分类有明显的提高,证明基于多源数据决策树分类方法是内陆淡水沼泽湿地信息提取的有效手段。     

粮情检测系统检测数据的可视化显示

在储藏过程中，粮堆可能出现发热。霉变，虫害孳生等情况。当储粮水分含量高，生虫霉变时，会引起粮堆温度升高，因此，粮堆温度是储粮状态的重要标志，必须准确地检测并适时显示，本文将计算机图形技术引入粮情检测，利用图形消隐向用户提供直观生动的三维温度分布图，用户可用鼠标选取某一点以观察，显示该点的空间位置及温度值，同时显示纵横剖面图，便于发现异常温度点，用Visual Basic6.0编制绘图程序，为研制，开发具有自主产权的储粮信息管理系统奠定了基础。     

粮食定等智能检测系统研究设计

论述了粮食定等智能检测系统的设计思路;重点介绍了小麦、玉米质量智能检测系统的通讯协议、软硬件的设计和功能特点,该系统改变了传统人工检测、手工录入数据的模式,实现了收购定等质量指标及储藏品质判定仪器数据的自动采集、传输和统计,并与智能化粮库管理平台的数据库实现了数据实时交互和共享,为粮油收购质量源头控制提供了技术支撑;展望了粮食仓储企业质量检验信息化的发展方向。     

Fast Animation Display of Large Structure with Multistep Modes

The method that the MASM assembler is interlaced to the MS-FORTRAM 5. 0 is used to store some step structural mode drawings in the designated disk file through their visiting VRAM,which are then restored in it when needed in order to realize the quick animation display of the mode. This method solves the problem of insufficient memories in storing multistep structural mode drowings with the ordinary method. As a functional modular of finite element analysis programs SAPS and ADINA transplanted to a microcomputer,the modular programed with the above method can quickly display the animation of large structure with multistep modes.     

Experiment Modal Analysis System Based On GraphicCell Object

A structure input and output method of graphic cells object oriented is proposed, and input and output model based on OpenGL graphic industry standard is founded. Using the technologies of MFC and OpenGL, the input, display and dynamic output of 3D graphics are realized, which are based on graphic cells such as node, beam, triangle, quadrangle element. Graphic cells keep consistency well with the elements of finite element in the aspects of geometry, reading and writing of structure files and so on. Using the model, the functions of structure input, data gathering and analyzing, and modal vibrating shapes output etc are finished. A visual experiment modal analysis system is daeloped.     

黄山市城区行道树结构特征分析

行道树是城市森林的重要组成部分,城市行道树结构特征的研究,有助于城市规划和建设,为正确评价城市生态系统的服务功能提供依据。本文通过对黄山市城区15条主干道路行道树的抽样调查,发现有乔木树种24种,灌木树种37种,分析行道树的组成、直径和冠幅结构及行道树物种多样性。结果表明,黄山市城区行道树组成优势种明显,直径在6~14cm的行道树占55.7%,街道之间行道树冠幅差异明显,新安北路的冠幅最大,为11.31m,天都大道冠幅最小,为2.4m,滨江中路树种多样性最大,H指数为2.6850,黄山东路树种多样性指数最小,H值为0.7498。     

金属硫蛋白的研究进展

金属硫蛋白是一种低分子量,富含半胱氨酸可结合重金属的蛋白质,它广泛存在于人体、动物、植物以及微生物体内,且理化性质基本一致。它可被不良刺激、金属、激素等诱导合成。近年来随着越来越多的金属硫蛋白基因被克隆及金属硫蛋白分离纯化技术的改进,对金属硫蛋白的研究日益深入,很多实验表明,金属硫蛋白参与体内微量元素的储存、转运和代谢,拮抗电离辐射,清除自由基以及对重金属的解毒作用,还与机体生长发育、延缓衰老及某些疾病有关。目前,动物金属硫蛋白由于发现较早,研究深入,而植物金属硫蛋白发现相对较晚,进展缓慢。本文对植物和动物金属硫蛋白的分类、特性、基因结构及调控、功能做了阐述,并对金属硫蛋白在医学、环境、食品、化妆品领域的应用前景做了介绍。     

不同生长型桃的叶脉结构与树体结构的差异与关系

为探讨开张型、直立型、垂枝型、帚形、矮化型和紧凑型不同生长型桃树叶脉结构与树体结构的关系,为桃矮化密植栽培、早期选择提供理论依据。以6种不同生长型桃为试材,对其树体结构特征和叶片形态、叶脉结构进行研究,并对树体结构与叶脉结构的关系进行分析。结果表明:6种生长型桃的叶片角度大小为62.76°~73.50°,没有显著差异,而分枝角度存在显著差异。其中对一级枝基角而言,垂枝型93.92°最大,矮化型36.75°最小,其他4种生长型居中;而一级枝腰角和梢角的变化规律在6种生长型中表现出相似规律,即垂枝型最大,开张型居中,其他4种次之且相互之间差异不显著。在叶片结构特征方面,直立型的叶片长度11.01 cm为最小,但叶柄长2.41 cm最大,紧凑型叶片长度16.20 cm、叶宽4.57 cm、叶面积47.28 cm2均最大,6种生长型的叶脉均为真曲行羽状脉;直立型二级脉数量最多,垂枝型二级脉数量最少;开张型二级脉角度最大,矮化型二级脉角度最小。6种生长型桃叶脉结构和树体结构相关性分析结果表明:开张型、矮化型、紧凑型中,二级脉数量与一级枝梢角之间存在负相关关系,且仅在开张型中两者相关性达到显著水平,相关系数为-0.970,而在直立型、垂枝型和帚型中,二级脉数量与一级枝梢角之间有正相关关系;在开张型、矮化型、紧凑型中二级脉角度与一级枝梢角呈正相关,且紧凑型中两者相关性达到显著水平,相关系数为0.953,其余生长型中两者之间有负相关关系。桃叶脉的二级脉角度和二级脉数量的差异在一定程度上可以反映不同生长型桃树体结构的变化,可作为早期选择桃不同生长型的一项直观形态标记。     

基于承包地确权成果的农作物种植结构调查

为快速、便捷获取农作物种植结构信息,选择山西省永济市开张镇作为研究区,基于农村土地承包经营权确权登记颁证成果数据,采用访谈调查法获取研究区农作物种植结构,并通过实地验证对其精度进行检验。结果表明：（1）开张镇农作物面积8926.86 hm²,包括果树、小麦、玉米等11种作物,农作物以果树和小麦为主,涉及39012个承包地块、9595个农户。（2）农作物广泛分布在各村庄周边,全镇东北部农作物以果树为主,西北部和东南部农作物以果树和小麦为主,南部农作物以小麦为主。（3）开张镇农作物种植结构准确率为92.06%,高粱、棉花、中药材的精度均为100%;果树、小麦、其他作物的精度均在90%以上;其余农作物的准确率在80%以上。（4）与实地调查、逐级统计、遥感等方法相比,基于农村土地承包经营权确权登记颁证成果,结合访谈调查来获取农作物种植结构信息,操作简单、成本低、精度高。研究成果可为研究区农作物种植结构调整和农业发展布局提供科学依据,研究方法有望成为未来获取农作物种植结构信息的重要方式。     

道路可达性对浙江千岛湖常绿阔叶林群落结构的影响

为研究人为干扰对亚热带常绿阔叶林群落的影响,笔者以道路可达性作为干扰的度量指标,对浙江杭州千岛湖景区森林氧吧公园中的甜槠（Castanopsis eyrei）林的群落结构与道路可达性的关系进行了定量分析。结果发现,群落平均盖度与道路距离呈显著正指数相关关系,表明研究地内人为干扰的增加导致群落生物量和生长状况的下降;但发现不同层次对干扰的响应具有不同的敏感性：乔木层<草本层<灌木层。与盖度不同,乔木层树高、胸径与道路距离之间未发现显著指数相关,表明不同植物特性对人为干扰的响应方式具有一定差异性。     

Structure of Recycle for Methods Base in DSS

In practice, it is a huge project to exploit DSS and very difficult to control expense of exploiting DSS, raise efficiency, and to ensure software'squality and reliability. Then a perfect methodsbaseis required. Recycling methods base can solve questions above. This kind of recycle contains two respects: recycle of programcodes and recycle methodsin building model.Based the logic structure of arithmeticand using the technology of OOM/OOP, the recycle of programcodes of methods is established. The structure of methods class library's arrangement and their relation map are gotten, at the same time relation data model manage methods are used in order to recycle methods in models base.     

The Finite Element Method for Frame Structure with Fuzzy Elastic Connections

The connections of frame structure elements at a node are ofen an elastic connection between hinged and rigid.In this paper,the stiffness matrix and the loading transfer matrix of frame element with turn elastic connections is deduced,the cross shear effect has been taken into consideration simultaneously.The stiffness matrices of some bar elements,such as both ends of the bar are hinged or rigid and one end is hinged but the other is rigid,are special cases of the stiffness matrices presented in this paper.After pointing out that the elastic coefficient at a node of a bar element with elastic joint is really a fuzzy quantity,the fuzzy stiffness matrix of the bar element is obtained,and a solution to structural fuzzy finite element equilibrium equations is presented.The fuzzy solution obtained from above is not only containing the solution of ordinary finite element method but also providing some additional informations with practical value.[WT5HZ]     

基于机器学习与高光谱数据的湿地植被物种识别研究

为了探索利用高光谱高空间分辨率遥感数据进行湿地植被物种识别，笔者在分析6 种湿地植被原反射光谱、二阶微分及连续统去除光谱的基础上，利用马氏距离法和相关系数法提取特征波段，并将其作为特征参数参与C5.0 决策树分类与信息提取。结果显示：（1）基于机器学习的C5.0 决策树法总体分类精度为79.87%，Kappa 系数为0.765，与监督分类最大似然法相比，植被信息提取总体精度提高9.95%，Kappa系数提高0.114；（2）机器学习C5.0 决策树法与最大似然法相比，其独特的优势在于对藻类的信息提取精度大大提升，狐尾藻和水蕴草的用户精度提升最大，分别提升了18.67%和15.86%。该方法能够实现湿地植被物种信息的高精度提取，为同类研究提供借鉴，为湿地生态健康评价提供科学与技术上的支持。     

Technique of Surface Reconstruction for Three Dimensional Structure of Chinese Medicihnal Materials

To study the technique of surface reconstruction for Chinese medicinal materials from its cross-sectional images and to display its three dimensional structure.The pattern recognition technique is used to complete the classification and matching of various structures, then the triangle surface approximation is used to produce the 3D surface of the structure.The 3D structure is reconstructed and can be viewed by flexible way based on SGI workstation. The technique and method provided by this paper is contributive to the study and view of various structure of Chinese medicinal materials, and is available to biomedical image processing field.     

乌兰布和沙漠流动沙丘风沙流结构的定量研究

为研究乌兰布和沙漠流动沙区0~50 cm风沙流结构,揭示流动沙区风沙流的运动规律,在对乌兰布和沙漠流动沙丘风沙流实测的基础上,运用拟合曲线和拟合方程等方法对0~50 cm垂直高度内的风沙流结构进行分析。结果表明：（1）0~50 cm总输沙量与各高度层的输沙量与风速均呈幂函数关系。（2）各高度层输沙量与高度呈指数递减关系。（3）上、中、下3层的输沙量均与总输沙呈幂函数递增关系。