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In section 3,we summary our paper.And this paper introduces the optimal control problem for the assets evolution equation with diffusion term.

第三节,给出本文的总结,并介绍了带有扩散项的资产发展方程的最优控制问题。

Based on the characteristic of multi resolution of wavelets analysis, a effective method for displaying any cross section from coarse to fine resolution is presented; Based on OpenGL, the paper improved Ray-Casting arithmetic and footprint arithmetic considering the characteristic of seismic data; After introducing the characteristic of geology data and the process of seismic interpretation, the paper presents a theory frame of 3D geological interpretation software and partly realize the frame.

本文首次利用小波变换实现了三维地震数据体的快速多分辨率显示;针对地震数据体的特点,提出了基于OpenGL的改进光线投影法的快速算法及改进的脚印算法;实现了地震数据体的切割、面状地质体的构造及面状构造与地震数据体的联合显示,动画效果的形成等三维地震数据体显示效果;分析了三维地质体的特点及常规地质解释过程的特点,提出了三维地学可视化软件的体系结构,并实现了其中主要功能,取得了良好的效果。

The model in this paper takes the form as belowThe main contents and results in this paper are as follows:In section 1, we state our main analytical results on equilibria of the above system. First, several sufficient conditions for coexistence of the steady-state are given by the standard fixed-point index theory in cone. Second, the global structure of the coexistence solutions and their local stability are established by using bifurcation theory. Third, the multiplicity, uniqueness and stability of positive steady-state solutions to this system are derived by means of perturbation theory of eigenvalues, standard regularity theory, Sobolev embedding theorem and fixed-point index theory.

本文主要有两章内容:第一章研究了该模型正平衡解的性质,可分为三部分:第一部分运用极值原理、上下解方法和锥映射不动点指标理论得到正平衡解存在的充分条件;第二部分利用分歧理论给出了平衡态系统正分歧解的结构,并讨论了局部分歧解的稳定性;第三部分利用特征值扰动理论、标准椭圆正则化理论、Sobolev嵌入定理及指标理论讨论了正平衡解的多重性、唯一性及稳定性,并讨论了参数对解的影响。

This paper contains three sections:In section 1,this paper introduces the background and the research results of assets evolution equation and the optimal control problem.And some preliminaries and main results are presented.

本文共分三节:第一节,介绍了资产发展方程以及最优控制问题的研究背景及现状,给出了预备知识及本文的主要结果。

On the other hand, after the reformation the unit specific energy consumption decreased 10 kilogram equal normal fuel oil per ton raw oil. In this paper, author analyse the principle and the advantages of the two stage riser fluidize catalytic cracking technology, where catalyst flow in relay and react in section, and short contact time and high c/o ratio. This paper propose a new method to calculate the catalyst circulation rate in each riser of a two stage riser fluidized catalytic crack unit and find out that the c/o ratio is lower than it should be by calculation use this method and give a suggestion to solve this problem.

本文从理论上分析两段提升管催化裂化技术的催化剂接力、分段反应、短反应时间和大剂油比特点的优越性,并对采用两段提升管技术后装置的生产状况进行核算,还提出了一种适用于两段提升管技术的计算各提升管中催化剂循环量的方法,通过计算分析出装置目前存在的第二提升管剂油比低的问题,并提出了改进建议。

The configuration and characteristics of the press section of 4600/500 high tensile fluting base paper machine are introduced in the paper.

重点阐述了4600/500高强瓦楞原纸机压榨部的配置与特点,压榨部为真空吸移辊、两道盲孔大辊径压榨装置串联组成,以适应100%废纸浆为原料生产A级高强瓦楞原纸。

In the second place, this paper uses the financial data reported by China's private listed companies and statistical analysis skills to test the theories and hypotheses. The research collects all required data from 2000 to 2002, examines the profit ability, the gain ability, the repay ability, and the cost control ability for all sampling listed companies by using Paired-Samples T test in the quantitative analysis section. The results show that these listed companies'profit decreases, income increases, repay ability enhances after the companies go public. Finally the paper takes the non-operating expenses as the illustrating index for the cost control capability of the companies to demonstrate that there is an obvious increase of non-operating expenses after getting great amount of money in IPO, in this sense it can be stated that there is the intendancy of low capital utility rate in private companies.

研究选用了描述性统计分析方法对样本企业IPO前后时段的财务指标进行了对比考查,并运用配对样本t检验方法进行了显著性检验,研究结果表明民营企业在IPO前后的盈利水平总体上是显著下降的;同时研究也显示虽然获利水平出现了小幅上升,但这是由于企业通过IPO融资增加了投资规模导致的;企业的偿债能力在IPO之后有明显的好转;研究最后以营业外支出作为企业成本控制能力的解释指标,发现企业在IPO上市融得大量资金后对主营业务以外的支出有明显的增多,可以判断民营企业存在资本利用效率低下的现象。

This paper introduces the concept of automated intelligent tire design as basis, and then systemically presents the general framework of CAD 3-D digital tire model design platform. Its modules include the demand representation, demand preanalysis, product list generation, product list modeling, testing, tires knowledge-base and tire parts-base. The realizing process and key techniques of the product list modeling module are described, including calculation principle of groove section and groove modeling scheme ,and so on. This paper also introduces an improved algorithm of calculating groove centerline. Finally CATIA platform and VBA toolkit-based tire design system is established under detailed demand representation type.

在提出自动化智能轮胎设计概念基础上,系统地阐述了计算机辅助设计三维轮胎数字化模型开发设计平台的整体架构,包括需求表示、需求分析预处理、产品清单生成、产品清单造型、产品检验、轮胎知识库和轮胎零件库等模块;叙述了数字轮胎设计造型模块的实现过程和关键技术,包括花纹沟截面计算原理和各种花纹沟的造型方案等,同时,还提出了一种改进的计算花纹沟中心线的算法;最后基于CATIA三维造型平台和自动化语言VBA二次开发工具实现了在详细需求表示类型下的轮胎设计系统。

In this paper, the application of cepstrum in the roller bearing s fault diagnosis of paper machine press section was discussed.

探讨了倒频谱技术在造纸机压榨部滚动轴承故障诊断中的应用。

Produced Rumple of the main reasons are: take the middle section of the paper is too loose tooth, causing can't pick out the paper phenomenon, Business card printing and membership card when being pulled out produce Rumple.

产生这类褶子的原因主要是:叼纸牙中间部分太松,造成叼不住纸张现象,制卡和会员卡制作时被拉出产生褶子。

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Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

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