On single color , it provides image2 - d minimum cross entropy based on genetic algorithm . on multi - color , it provides distill color - feature and morphologic segmentation technique . these segmentations all get good effect to make preparation for the following recognition . thirdly , this paper gives feature extraction means 另外,还研究了对背景固定的灰度视频流及彩色视频流的运动目标进行了检测分割,这些分割方法均取得了不错的效果,为目标识别作好了准备。
By comparing the results of two different lengths of xiaofang , it is found that the combustion efficiency with a smaller length is higher . moreover , the effect of various structure , such as the lengths of dafang , the angle between xiaofang and dafang is analyzed with a 2d model . the results show that the combustion chamber with smaller angle and length of dafang is better 通过对不同小方段高度燃烧室计算结果的比较,发现适当的减小小方高度将有助于提高燃烧效率;另外,还针对不同结构参数下的燃烧室二维流场进行了仿真,结果表明在一定范围内增大突扩角和大方段高度可以使燃烧进行得更充分。
Existent automatic grading model of programs can not deal with the programs with structural body . in this paper , we study the syntax and concept of structural body based on an existed model , and improve the original model in the following aspects : increasing the middle representation form of structural body in analysis of morphology and syntax and system dependence graph and abstract syntax tree , adding standardization rules , mainly including type definition , nesting structure , initialization , function invocation , renaming and sequence of program sentence , besides standardization rules of bit operation and program with enumeration , enhancing the function of inspecting syntax error and improving matching strategies 本文在原有的编程题自动评分模型的基础上,对结构体的语法结构和实现原理进行研究,并在以下几个方面完善原有模型:在词法和语法分析、程序的系统依赖图建立和抽象语法树生成三个方面增加结构体类型的中间表示形式;扩充程序的标准化规则,主要包括类型定义标准化、结构体嵌套结构标准化、结构体初始化的标准化、结构体作为函数参数时函数调用标准化、结构体变量名称标准化、结构体语句排列顺序标准化等等;另外,还增加了位运算标准化、枚举标准化以及文件的处理;增强学生程序中语法错误的检测和改进程序匹配策略。
This paper study shareholder structure reform systemically and provide reference basis for government decision - making in the era after shareholder structure reform and the further opening up of market conditions , based on non - arbitrage analysis theoretical framework in modern finance and quantitative methods , in conjunction with the actual situation of two groups of 46 experimental companies , from companies " performance and their shareholder structures , rational design of consideration schemes , game analysis between parties investors and the effects of wealth redistribution etc 另外,还基于流通股东与非流通股东之间的博弈关系,采用讨价还价模型和逆向递推方法,分析在有限期条件下,股权分置改革对上市公司的总体财富创造效应以及财富在不同投资主体之间的再分配效应,并比较不同形式对价方案的差异。研究结果不仅具有理论价值,同时将为政府在后股权分置时代和进一步开放的市场条件下进行科学决策提供参考依据。
Particularly , it focuses on the differentiation of two geographical terms ? the northeast asia region and the east sea ( japan sea ) rim region , the illustration of the necessity of the economic cooperation among local regions within the east sea ( japan sea ) rim region , and several patterns of the economic cooperation proposed by chinese , japan and south korean scholars and experts . in the second part , the thesis makes a systematic and thorough analysis on the background , current situation and characteristics of the economic communication and cooperation in the east sea ( japan sea ) rim region , and also comments on the present progresses and existing problems 同时,介绍了环东海(日本海)地区的经济合作模式,另外,还分析了环东海(日本海)地区经济合作的现状、特点及产生的效果等相关问题,并以环东海(日本海)地区的中国吉林省、俄罗斯滨海边疆区、韩国江原道为重点提出了一些合作设想,主张在这三个地区间率先建立起经济合作共同体,以此进一步带动整个东北亚地区的经济合作。
Engineering drawing has always been labeled as a practical subject . a combination of geometrical , building . mechanical and electrical drawing , it relates between theory and the picture of reality . engineering drawing will provide an accurate and complete ptcture for every object tn terms of shapes and sizes . usually , it is taught using the face - to - face teaching mode even in an odl environment . due to its nature , some students may find difficulty in imagining and interpreting the drawings . however , the availability of sophisticated technology provides the opportunity for the learning of engineering drawing to be enhanced via online . a web - based system for teaching and learning engineering drawing was developed based on a constructivism model . the web - based system is tailored for several topics of engineering drawing such as orthographic projection , sectional view , isometric and oblique drawing at the secondary level . the learning strategy consists of multiple phases beginning with introduction , concept learning , engineering drawing method , application and exercises . during introduction , students will be exposed to an overview of the topic followed by learning of specific concepts . the system provides a learning environment that allows engineering students to view objects from different angles , such as third angle projection and first angle projection as well as views of plans , side and front elevations . after learning about the concepts , students wilt be guided through the various steps in drawing methods for each topic via animations and simulations . learners are able to view any section repeatedly . examples of real application of engineering drawings were also given using graphic , animations and video . to evaluate students understanding , exercises were given at the end of each session 工程制图一直被认为是一门实践性学科,其整合了几何学、建筑、力学、电子制图等,从而将理论与现实图像联系起来,工程制图能为每个不同形状、尺寸的物体提供精确的、完整的图像.通常,即使在开放与远程教育环境中,工程制图的教学也是通过面对面的教学模式来进行的.由于其特殊性,一些学习者可能难以想象并解释这些图像.然而,尖端的技术使得可以通过在线的方式加强工程制图的学习.研究者基于建构主义模式开发了一个面向工程制图教学和学习的网络系统.该系统适用于几种工程制图,例如展开图、刻面图、等角图和斜角图.学习过程包括导论、概念学习、工程制图方法,以及应用与练习等阶段.在导论阶段,系统为学习者提供了专题简介,然后是概念学习阶段.系统所提供的学习环境允许工程专业的学生从三维透视、一维透视、平面图、侧立面、正立面等不同角度来观察物体.经过概念学习阶段后,系统将引导学生通过动画和模拟学习每个专题中制图方法的不同步骤,学习者也能重复观察任何剖面.另外,还通过图像、动画和视频等方式展示真实的工程制图应用案例.最后,为了评价学生的理解能力,在每部分内容后面都附有相关的练习
