详细研究
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With respect to syntax, the roles of tagmeme in the structure of word and sentence and Chomsky's Generative-Transformational Grammar are discussed. The spatial relation theory and existing research achievements are investigated. Having noticed the shortage of the capability of topological and metrical relation in the description of spatial information structure, the author proposes Combinational Qualitative Geometry based on the two invariables under ordinary transformations, distance ratio and direction difference, the CQG-based spatial relation system between topological and metrical constraint is thus constructed, on which several spatial relations such as parallel, perpendicularity, co-linearity, sequence and direct neighborhood are derived. Based on extended theory of spatial relation, the language anamorphosis is analyzed from the aspects of phonetics, semantics and syntax. The mere geometric and formalized spatial relation is then integrated with concrete geographic ontology to accommodate richer and indicative spatial configuration of spatial information in the different geographic context. Finally a syntax framework for spatial information is put forward.
在语法结构方面,首先阐述了法位和法素在语法结构词法和句法中的地位和作用,以及Chomsky生成转换语法的核心内容;详细介绍了地理信息系统空间关系理论及现有的研究成果;在分析现有的拓扑关系和量度关系对空间信息结构描述能力不足的基础上,提出了基于长度比和角度差两个不变量的组合定性几何,以此建立了介于拓扑及量度约束之间的组合定性关系体系,并以此为基础派生出平行、垂直、共线、次序、直接邻近等空间关系描述;本文基于扩展的空间关系理论,详细讨论了空间关系在语音、语法和语义三个方面的语言变体,将纯几何和纯形式化的空间关系与具体的地理本体结合起来,可以获得更为丰富的、更能反映空间关系在不同语言上下文中具体体现的组合关系;最后给出了一个空间信息的语法结构的基本框架。
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In this study, the classification of Chinese Babesia spp. infective to cattle were carried out by the classical methods and molecular biotechnology, and investigated the vector ticks of an unidentified Babesia sp. isolated from Xinjiang province by the experimental transmission, and observed the developmental forms of Babesia sp. in the engorged Hyalomma anatolicum anatolicum females;We developed the indirect hemoagglutination test for Babesia bigemina, and evaluated its effect in the sero-survey;We made slow-released injection of imidocarb, and estimated its efficacy on the treatment and prevention of Babesia bigemina infection by the laboratory work and the field tests. The major results were presented as following:1. Discovery of a bovine Babesia sp.
本研究以牛的巴贝斯虫为研究对象,采用传统技术与分子生物学技术相结合的方法对在我国已分离的牛巴贝斯虫病主要病原进行了分类学研究,在实验室内运用蜱传播试验对分离于我国新疆的牛的巴贝斯虫未定种的媒介蜱及其传播方式进行了详细的研究,采用组织抹片方法对牛的巴贝斯虫未定种在小亚璃眼蜱饱血雌虫体内的发育过程进行了观察;建立了间接血球凝集试验诊断方法,并对其在血清学调查中的应用效果进行了考察;研制了咪唑苯脲缓释注射剂,并通过实验室工作和田间试验对防治效果进行了评价。
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It is the purpose of this paper to review the contact problems and some recent developments using BEM.
本文回顾了使用边界元法处理接触问题的情况及目前的研究进展,详细叙述了处理这类问题的理论方法及相应的公式,然后讨论了解决这类问题所采用的边界元法的步骤和各种数值方法,同时给出了的大量的有关接触问题研究的参考文献及作者近期的研究工作,并提出一些有待进一步研究的问题
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Based on the research results of Chaos theory, in this dissertation, it has made detailed analysis of the chaotic signal generator. Firstly, the characteristic and various detection methods of chaotic signal are recommended. Secondly, with the aid of software, such as MATLAB, PSPICE, EWB, etc, discussion of the process of generating chaotic signal proceeds. Through simulation, the output result of several kinds of chaotic circuit are analyzed and compared. Thirdly, aiming at Chuas chaotic circuit, through debugging, the impacts by components and parts in the circuit, such as operation amplifier, capacity, inductor, etc, has been further investigated. And then provides a new scheme to implement Lorenz chaotic system, the circuit design and analysis are presented in detail and it can be realized by the hardware of programmable arrays FPGA, the experimental results indicate that this scheme has the advantages of easy operation, flexible design and high efficiency. An application example in secure communications is also provided. Finally, through picking up the characteristic parameter-Lyapunov exponent of the Chaos we can analyze the performance of different chaotic signal generators.
本文在混沌理论研究成果的基础上,对混沌信号的产生做了详细的分析,涵盖以下内容:首先介绍了混沌的定义,混沌信号的基本特性和各种判别方法,特别是对简单的一维Logistic映射的硬件实现问题做了初步探索;其次对混沌信号的产生方法进行讨论,借助于MATLAB、PSPICE、EWB等仿真软件,对几种混沌电路输出的混沌信号进行了分析比较,并在此基础上针对典型三阶连续自治系统Chua's电路作进一步实验研究,通过混沌电路调试,深入研究电路中各元器件,特别是运算放大器、电容、电感等对混沌信号时域以及频谱的影响;再次研究连续混沌系统的数字化硬件产生,设计了Lorenz混沌电路在现场可编程门阵列FPGA上实现的新方案,在保密通信中的应用实验结果表明该方案具有操作简单、设计灵活、效率高等优点;最后针对不同混沌系统,采取不同算法,提取混沌特性参数Lyapunov指数,进而对不同的混沌信号发生器的性能进行了分析。
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The main research theme of this dissertation is sensor placement optimization and temperature measurement system in thermal error compensation of machine tools.
第一章,阐述了本论文的研究背景及重要意义,详细介绍了国内外机床热误差补偿的研究概况,侧重介绍传感器优化布置方面的研究,同时也介绍了温度测试技术及温度传感器的发展应用概况,概述了本文的研究内容。
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Except some aspects such as the administration, the public participation, etc, the thesis emphasizes the theories and methods of urban design for the constructiveness of planning and design at the stage of regulatory planning.
本论文研究的重点是基于控制性详细规划的规划设计建构层面的城市设计的理论和方法,而对于控制性详细规划层面的城市设计的其它方面如管理实施、公众参与等内容未作过多涉及。
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The dissertationsummarizes,analyses and studies the current status of the data mining technique inour native country and overseas widely and roundly and then summarizes anddiscusses its developmental trends and hot research fields. The definiens andorientation of the data mining is reviewed in brief first. Based on the basic conceptsof data mining,this dissertation classifies and summarizes the objects of data miningand the common techniques in detail.
对数据挖掘技术的国内外研究现状进行了广泛而全面地归纳、分析和研究,对数据挖掘技术的未来发展趋势和热点研究领域进行了总结和探讨,对数据挖掘的定义及定位进行了简要的回顾,在数据挖掘基本概念的基础上,对数据挖掘常使用的技术和研究的对象进行了详细地分类、归纳和总结。
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Secondly, the platform of IPTV set-top box named DM6446 is introduced, and then the AVS video coding standard which is implemented as the video coding standard of IPTV is introduced. The kernel architecture, peripheral devices of DM6446 and the key technique of AVS video coding such as transformation, quantization, intra-prediction, inter-prediction, interpolation, and loop filter is introduced in detail. Thirdly, the system procedures of set-top box which are implemented on the ARM side of DM6446 are introduced in detail. This part focuses on the demultiplex of audio and video data, the design of data interface, the playback of audio and video, and the communication between ARM and DSP. Fourthly, the loop filter algorithm of AVS video coding standard is introduced in full detail, and the optimized procedures of the algorithm on the DSP side of DM6446 are introduced, and then the optimized results are presented. Fifthly, the thesis introduces and analyzes the state-of-art technique of deblocking filter, and proposes a deblocking method, and then the results of proposed method are given. Finally, summarize of this thesis and further development is given.
首先对IPTV技术、视频编解码技术以及去块滤波技术做了简要介绍;然后介绍了IPTV机顶盒的实现平台DM6446,并介绍了该处理器的外围接口和内核结构,同时介绍了作为本IPTV系统视频标准的AVS第二部分视频标准,以及该标准中变换量化、帧内预测、帧间预测、插值和环路滤波等多个模块的算法;接着,详细介绍了机顶盒系统相应程序在DM6446 ARM核上的实现,重点介绍了音视频系统码流的解复用、数据接口设计、音视频的播放以及ARM核与DSP核之间的通信;然后,详细介绍了AVS视频标准中环路滤波算法及该算法在DM6446 C64+内核上的优化,并给出优化结果;然后对去块滤波算法进行了研究并提出了一种环路滤波方案,同时给出了此方案的实验结果;最后总结了本文的工作,并提出了可以改进的方向。
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In this thesis, with the aid of the method of reconstructive direction cosine matrices of the analysis and synthesis of spatial mechanism, the more overall and systematic theoretical research is done about trident-bar universal joint and drawn some useful conclusions about kinematics analysis, dynamics analysis, kinematical precision analysis, vibration analysis, simulation and experimental results analysis, mechanism type selection analysis based method of fuzzy distinguishable pattern, integrated designing prototype system.
本文以改造的方向余弦矩阵为数学工具,以三叉式万向节为研究对象。进行了机构有关的解析求解、仿真和试验结果分析,基于模式识别技术的机构选型及机构的集成设计原型系统,得出了以下结论:(1)采用改造的方向余弦方法适用于空间机构的运动求解及动力求解。它的特点是解析明了,以矩阵方式体现,适合计算机求解。并以万向节为实例进行了万向节的详细的运动分析,建立了求解的各个变换矩阵,得出了机构的详细的运动关系。
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Indicating the main characteristics of production technology in mail process center. Knowing in detail of the computer model and simulation method of discrete event system; investigation of computer simulation software; comparison and analysis the advantage and disdvantage of the simulation software. Modeling and simulating the package sorting production line in Xinjiang Newspapers and Periodicals Emitting Office and analyzing the simulation result. Modeling and simulating the hanging sorting -production line in Urmqi Mail Processing Center and analyzing the simulationresultProposes a simulation design method for the mail center auto product line, and made a simulation design for package emitting auto product line in Xinjiang Newspapers and Periodicals Emitting Office. Modeling a mathematical model and simulate for the construction of the sorting table of package sorting machine, and proposes a scheme of discriminatingly setting the buffers of sorting table.
本文的主要工作如下:针对邮政业务,特别是邮件处理中心的邮政业务作详细的调查分析,指出邮件处理中心生产工艺的主要特征;通过详细的了解离散事件系统计算机仿真技术的研究方法,并对计算机仿真软件作了周密的调查,借鉴、分析比较其功能特性的优缺点后,根据实际情况选购了本论文所需的仿真软件工具;对报刊发行局包件分拣生产线作计算机建模和仿真,将仿真结果作分析总结;对邮件处理中心转运中心的推推分拣生产线作计算机建模和仿真,得到仿真结果并作总结分析;提出邮件处理中心自动生产线的仿真设计方法,对报刊发行局期刊发行自动化生产线作仿真设计;最后对包件分拣机上包台结构建立数学模型和计算机仿真,提出多级上包台区别设置缓冲区的方案。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。