查询词典 thesis

In this thesis this author mainly studies the theory and methods of ship wave-making resistance. Detailed analyses of New Slender-Ship Theory are made and corresponding calculation methods are presented . This thesis aims at finding an algorithm of wave-making resistance calculation suitable for various kinds of ships.

论文工作是研究船舶兴波阻力理论与方法，对新细长船理论进行了较详细的分析，对其具体的计算方法做了深入的研究，目的是探讨可适用于多种船型的有效的兴波阻力算法。

This thesis presents the studies of U-shape gantry structure of container gantry crane, and dynamic simulation and fatigue life estimation of its rigid anti-sway. The main contends are as follows: Supposed that trolley frame is composed of spring structure, due to larger trolley gauge of U-shape gantry structure. For the gantry crane, a series spring dynamic vibrating model with three masses, three freedoms of degrees is built in this thesis and vibrating calculus equations are precisely resolved by mode analyses rule.

本文研究集装箱门式起重机U型门架结构及其刚性减摇系统的动态仿真和疲劳寿命估算，主要内容如下：由于U型门架结构小车轨距较大，本文建立了考虑小车架为弹性结构时门式起重机的三质量三自由度串联弹性动力学振动模型，用模态分析法求解振动系统微分方程组的数值精确解。

In the last new years , as the demands of wireless communication system grows rapidly , the bands of microwave frequency had been saturated with various communication applications . To achieve wider spectrum for high-speed and high-capacity transmission , bands of millimeter-wave frequency are the solution of this problem . The advantage of MMW wireless communication systems is wider bandwidth comparing with microwave communication systems . To utilize the spectrum efficiently , many methods of complexly digital modulation is proposed . The more complex modulation , the higher linearity is required , and more various phase of signals are required to accomplish process of modulation . Therefore high-linearity and quadrature-phase modulator and demodulator are the emphasis of this thesis . For high level of integration , high performance and low cost , this chip is fabricated by the complementary oxide semi-conductor 0.13um process . A compact size of direct down-conversion and direct up conversion circuits will be presented in this thesis .

近年来随著无线通讯产业的蓬勃发展，微波频带已经趋近於饱和，为了追求更宽的频谱来达到更快传输速率及高资料容量的传输，宽频的毫米波频段提供了解决此问题的途径，毫米波无线通讯系统提供了相对於微波通讯系统宽频的优点，且为了更有效的使用频谱，各种不同且复杂的数位调变方式及方法被发表出来，越复杂的调变方式其所需的线性度越高，且需要更多不同的相位讯号来完成调变的过程，因此高线性度及四相位的调变及解调器将是此篇论文的研究重点，为了达到高整合性，高效能，及低成本的电路设计，我门利用互补式金氧半导体制程来完成此电路设计，因此一小面积的直接降频(Direct down-conversion)及直接升频(direct up-conversion)电路将在文中介绍。

The research subject in this thesis is the part of the research project in advance of National Defence of the Tenth Five-year Plan.The primary coverage of this thesis includes nuclear power equipment steam turbine and condenser system.

本研究是十五国防预研项目核动力装置动态仿真中的子课题，其主要内容是围绕着核动力装置汽轮机和冷凝器系统来展开的。

In China, there is no research in the field previously. This thesis supported by the Ministry Advanced Research Foundation of China, make a basic study of the instrument. Its achievements read as follows:(1) A new analytic method based on the concept of an equivalent volume force presented in this thesis, which solve the problem of piezoelectric beam, is simple, clear and reliable. By means of it, the design parameters for QRS have been calculated and analyzed serially, i. e., optimum electrode configurations are chosen, the side ratio of beam is determined, and the formula of electrode location efficiency is derived.

在我国这方面的研究尚属空白，本文在兵器部预研基金项目的支持下，对这种器件进行了基础性研究，从而填补了国内空白，具体包括如下内容：(1)提出了等效体力概念，以此为基础建立了一种分析压电振梁问题的新方法——等效体力分析法，该方法物理图象清晰、计算简明、结果可靠，它可以对QRS的设计参数进行系统的理论分析。

Main points of the thesis are as follows:(1) The main function models and information relations between these models in the CAPP system in the integrated CAD/CAM project are explained, a new process plan design method is mentioned based on analyses of process plan design. This method is based on the process plan prototype, and develops the prototype little by little until the perfect process plan is completed, the prospect of this method is discussed;(2) The feature abstracting rules and methods are studied, a feature coding system is developed based on GT, all the defined feature models are described by the mathematical methods;(3) The integrated method of CAD/CAPP based on features is mentioned, this method defines a feature exchanging model, and develops an interface software to exchange design data into technology data base, this technology data base includes the design and technology information of the parts;(4) The process plan reasoning method based on features is created, this method uses Mycin algorithm to solve the reasoning of the feature process plan. A process plan making system is developed. In this system part process plan is made by the semi-intelligent method, this method uses the feature reasoning, feature process chain searching and man-computer talking together;(5) The main structure of the HOPE system is introduced, a shaft drawing and its process plan made by this system are shown, the data process problem in process drawing making is also discussed;(6) A new method of describing process rule is introduced, this method uses IfThen rules and neural nets weight values together to describe process rules, the BP algorithm is adopted in this method;(7) The optimal machining sequence problem of the process steps on the same fixturing is discussed, optimal algorithms SA is applied to solve this problem, the result shows that this method is more efficient than the traditional method;(8) All jobs in the thesis are summarized. In order to carry out the research in the future, some rational proposals are given.

全文论述的内容主要有下列几个方面：(1)较为系统地阐述了CAD／CAM一体化工程项目中CAPP系统的主要功能模块及其信息流程，在分析工艺设计过程的基础上，提出了基于特征原型的渐进式工艺设计方法，并探讨了该方法的应用前景；(2)研究了零件特征提取的原则和方法，在成组技术的基础上，开发了一套基于特征的分类编码系统，并在提取零件特征的基础上，定义了零件特征的数据模型，开发了基于轴类零件特征的参数化设计系统；(3)研究了基于特征的CAD／CAPP集成的方法，通过定义零件特征数据模型的存储结构，开发了将设计数据转换到工艺数据库中的接口程序，为后续的CAPP系统提供必要的零件形状和工艺信息；(4)研究了基于特征的工艺推理方法，将Mycin算法应用到工艺决策中，开发了基于特征的工艺推理及工艺方案生成系统，在系统中综合运用特征推理、特征加工工艺链查询及人机对话相结合的半智能化方法确定零件加工工艺；(5)介绍了整个HOPE系统的总体结构，通过运行HOPE系统绘出了一轴类零件的零件图，并生成了该零件的加工工艺方案，初步探讨了基于特征的工序图生成技术中数据处理问题；(6)研究了工艺设计过程中知识如何有效表示的问题，提出了将显式的IF-THEN规则表示与隐式神经网络权值表示相结合的工艺知识表示方法，并利用BP算法进行了工艺知识表示的初步研究；(7)研究了工艺设计过程中同一安装下工步优化排序问题，利用神经网络中基于模拟退火的理论来解决该工步优化排序问题，实践证明该方法较传统的算法具有更高的效率；(8)总结了本文所进行的研究工作，为今后进一步开展工作提出了较为合理的建议。

Depending on the history of Zhuang , my thesis attempts to investigate the ethnic memory of Zhuang in an all-round way. The memory is very useful, because they contribute to forming the self-representation of the ethnicity. Have investigated the transmittance process in Zhuang society of ethnic memory in my thesis, which have offered comparatively rational exposition for history of Zhuang and current situation .

论文试图通过对壮族族群现存的为族群或族群中的大多数所共享的记忆形态的历史性考察，以壮族族群的起源、发展、形成与延续为背景，探讨在几千年的历史时空变幻中，壮族族群的集体记忆经历了怎样的传递过程，以及这一过程对族群的自我表象施加了怎样的影响，从而为壮族族群自我认同的历史现状提供较为合理的解释。

And Cohen's criticism of the principle of self-ownership is refutation of the thesis of self-ownership because the principle of self-ownership is supported by the thesis of self-ownership.

柯亨注意到，从直觉出发，这一命题似乎具有不可抗拒的道德吸引力。

Based on the theory of human subjectivity, A Maslow's hierarchy theory of needs and Objective management, the thesis emphasize the self-management in junior high school. Starting with analysis of the present situation, the thesis investigate the functions of performing self-management. From her own experience as a headteacher, the author gives a sutle analysis of the way to promote the socialization of students, the way to optimize class management and the way to foster citizens for the future. The methods, measures, steps and results for self-measurement are introduced according to her class management stages (i.e. management under guidance of headteachers, cooperation between teachers and students, self-management by students). Finally, the remaining tough issues during her experience are dissected and the author gives suggestions to perfect the management patterns.

本文以主体性理论、马斯洛需要层次理论、目标管理理论为依据，阐述了在班级管理中实施初中生自主管理的重要性；从目前初中生特点、初中班主任工作现状入手，分析当今班级管理的现实；从促进学生的社会化、优化班级管理效果、培养未来社会公民等方面分析了实施初中生自主管理的作用；从自己作为第一线班主任教师的工作实际中，分别介绍了班主任导管、师生共管、学生自管三个阶段实施初中生自主管理的手段、方法、具体措施及取得的成效；最后分析了自主管理实施过程中存在的诸多问题，为进一步更好的进行管理提出了建议。

Therefore, how to realize the application of computer-assisted marking of the thesis has become an urgent need and hot spots on research, especially on how to evaluate the self-completion in the thesis, as the core.

因此，如何借助计算机来实现论文的辅助批改就成了一种迫切的需要和研究热点，其中尤其是计算机辅助评判论文的自主性为核心。

The network space is the typical form of abstract space when it comes to the digital stage.

网络空间是抽象空间数字化阶段的典型形式。

The Notarial System,as the system of judicial certification in our country,is both the constructor and the defender of social credit system,It has its special value and function in the social honesty.

公证制度作为我国司法证明制度，既是社会信用体系的建设者，同时也是社会信用的捍卫者，在诚信中有其特殊的价值和功能。