In distribution of light in canopy sub-model, the concept of leaf-amount density function was introduced.

在冠層內(nèi)光分布的子模型作者提出了葉數(shù)密度函數(shù)的概念，即單位體積的空間中葉數(shù)的多少亚洲黄色视频电影。

Visual Rice Growth Models system represented an effort to design crop modeling software with object-oriented paradigm and to organize classes in system with model-document-view architecture. Firstly, the crop-environment system was abstracted as many subsystems and physiological processes with object-oriented paradigm while many classes were established to simulate the behaviors of these subsystems and physiological processes. In VRGM, the document-view architecture in Visual C++ was extended as model-document-view architecture for agricultural integrated system. In the model-document-view architecture, document gets the final simulation results by manipulating the models classes and acts as a communicating intermediacy between model and view. Views display the simulation results and translate users' operation and data entering to document. The architecture separates the domain models, data management and user interface.

中文題名可視水稻生長模型與智能栽培專家系統(tǒng)的研制副題名外文題名 Studies on visual rice growth models and cultivation expert system of computational intelligence 論文作者米湘成導(dǎo)師鄒應(yīng)斌研究員學(xué)科專業(yè)作物栽培學(xué)與耕作學(xué)研究領(lǐng)域\研究方向作物模擬與專家系統(tǒng)學(xué)位級(jí)別博士學(xué)位授予單位湖南農(nóng)業(yè)大學(xué)學(xué)位授予日期2001 論文頁碼總數(shù)64頁關(guān)鍵詞作物生長模擬生長模型水稻館藏號(hào)BSLW /2003 /S126 /2 本研究系國家"九五"攻關(guān)項(xiàng)目"水稻大面積高產(chǎn)綜合配套技術(shù)研究與示范"課題的子專題A片免费观看久，并結(jié)合水稻高產(chǎn)栽培技術(shù)資料和水稻專家的知識(shí)、經(jīng)驗(yàn)以及科研成果手机看片1024人妻久久性色，研制成了可視水稻生長模型(Visual Rice Growth Models思思玖玖，VRGM)及水稻高產(chǎn)栽培專家系統(tǒng)www簧片网址视频，并在此基礎(chǔ)上進(jìn)一步利用人工神經(jīng)網(wǎng)絡(luò)模型、模糊邏輯技術(shù)和田間栽培試驗(yàn)亚洲人成网网址在线看，對(duì)生長模型和專家系統(tǒng)進(jìn)行了改進(jìn)日韩AAAAAA免费毛片。

From this point of view,it ispointed out that there are two kinds of commonalities among diverse prob-lems,one is the relative commonality and the other is the homogenous co-mmonality,and it is advanced that the approach to effectively make useof the relative commonality is to divide models suitably and to set up theorganic relation between models convenient to their composite conection oncondition that models are shared,and the approach to effectively make useof the homogenous commonality is from the view point of different problemsneeding their special models for solving,to convert their special modelrepresentation to comparatively general model depth representation on theprinciple of independence and share of commonality.The articles in thepast has made deep and complete research on model management in aspectssuch as model division and compositive conection,and a number of theoriesand methods are provided,but none of them is in relation to model depthrepresentation.

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The study establishes the compression of models and algorithms for vector graphics data on different basis, including on the basis of vector graphic factors of B spline curves in predecessors research; on the basis of rectangle graphic factors in main axis mode; on the basis of the application of Hough transform to polygonal line, ellipse and circle, so the study improves the models and algorithms of compression for vector graphic data.The compression for vector graphic data mainly studies the data of storing graphic factors.

本文研究的內(nèi)容是：根據(jù)對(duì)以往各種曲線矢量數(shù)據(jù)壓縮模型與算法的研究精品久久九九九久久久久国产，建立了基于B樣條的曲線矢量圖形要素的數(shù)據(jù)壓縮模型和算法69视频在线免费看；在前人研究的基礎(chǔ)上，建立基于主軸模式的矩形圖形要素的數(shù)據(jù)壓縮模型和算法A级毛片喷潮高清免费观看；本文作者將Hough變換應(yīng)用到折線动漫无码av永久免费专区、圓及橢圓圖形要素的矢量數(shù)據(jù)壓縮上，在此基礎(chǔ)上改進(jìn)了基于Hough變換的折線3Dh色视频在线播放、圓及橢圓圖形要素的數(shù)據(jù)壓縮模型和算法欧美黄色网站免费的。

Environment radon is mainly from rock and soil in geological environment, but the research is not connected with geological environment now. On the basis of physical field, the theoretical distribution model of radon in soil and exchange model of earth—air are set up by using Fick diffusion law and Dacy law, and then the research of environment radon is linked with geological environment. This paper described how the evry parameter of the theoretical model influence the radon concentration in air. The results of research indicat that molecule diffusion of radon is different from it's eddy form. Under the condition of surface radon source, the model experiment is used to study the transportation and distribution of radon in medium. The data of experiment show the relationship between radon and depth can be described by exponent. If the radioelement is well—distributtion, the concentration of radon in different depth or in different point at the same depth change with time, but the accumulated exhalation amount of radon at different point on the surface of model are close in relative long time. The author studied the exchange of radon between mediums and verified the theoretical models too.

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Many researchers have devoted their work to the development of modal analysis extraction techniques in order to obtain more reliable identification of the modal parameters. There are many damping identification methods, but each one has different merit and defect. In order to find which one is the most reliable method with respect to certain characteristics, this thesis focus on how to identify structure's damping in time domain. The following works have been done in this thesis: 1. Investigate four modal analysis methods——the LSCE Method, the Ibrahim Time Domain Method, the Time Domain Collectivity Modal Parameter Method, the Rational Fraction Polynomial Method and improve on the ITD Method in arithmetic.

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Here, we define compositionally an ontology as "a system (systematic, operational and prescriptive definitions) of fundamental concepts and relationships which shows how a model author views the target world, and which is shared in a community as building blocks for models".

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Based on the pseudobinary method and solute aggregation model of aqueous solution, a pseudobinary solute aggregation model for correlating the viscosity of water-organic solvent-salt solution is established. The model has been tested for ternary aqueous solutions saturated or unsaturated with salt. The average relative deviation is about 1.0%. The results are better than the pseudobinary local composition model presented early by authors.

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So as to understand deeply the supply contract in theory; Fouth, based on the research above, the author, discusses the application of supply contract management, with providing some contract models and exampling the supply contract management in some intricate contracts models, for instance, Quanlify, Fix-quantified, Time flexible, and Forward contracts etc..

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Therefore, the study is significant both theoretically and practically. As a result, the studying aim of this paper is to establish a practical and complete system for the prediction of ship maneuvering motion, taking into account of the influence of the environmental factors, such as the wind, wave and current, establish a practical and complete system for the prediction of ship maneuvering motion. In this paper, the OpenGL virtual reality simulation technique is introduced into the field of ship maneuver and control, and using the MMG mathematical model, the three dimensional dynamic simulation system of the ship motion is established and good results are achieved. In the process of the system development, firstly, the maneuvering motion equations for ship in the still water are established, based on the MMG module mathematical model and serial experimental result. After compiling the program, the calculation results are compared with the experimental data, the coherence between them validate the mathematical model.

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