查询词典 research

Our research depends on the advantage of cross-knowledge and makes a research on this subject by Gas-Solid Hydromechanics theory and PTV measure technology. Our research tries to understand sand incipience and wind-sand flow structure, find a new way to research the wind-blown-sand flow.

本论文发挥交叉学科的优势，采用气固两相流体力学理论和PTV测量技术研究这一现象，从新的角度认识沙粒起动和风沙流结构，为风沙流动的研究打开了新的思路。

At first, in this paper the national and international literature of team and team motivation is summarized. Secondly, based on the analysis of theoretical scientific research personnel and team, the teamwork motivation model is built, and it is achieved that teamwork improves the team output. Later,we lead the reputation that is regarded inexplicit incentive into the scientific research personnel"s utility function, establish a model of their reward, analyze the parameter of reputation"s effect to factor in the contract. After that, it analyses traditional training object selection and whole training object selection among the scientific research team to draw the conclusion that the traditional training object selection has obvious limitations and the whole training has evident advantages. In the end, based on the theoretical study of the psychological contract, we can obtain the effective paths of forming psychological contract among the scientific research team.

本文首先对团队和团队激励方面国内外的文献进行了详尽的综述；其次，在对科研人员及科研团队理论分析的基础上，建立了适合科研团队激励机制的基于团队合作的激励模型，得出成员间互相合作将提高科研团队的产出；然后，将声誉效应和职业生涯时间引入科研团队成员报酬契约，建立了科研团队成员的报酬激励模型，分析声誉系数和职业生涯时间对契约中各要素的影响；接着，通过博弈论知识分析了科研团队培训对象选拔制度，得出以下结论：传统培训对象选拔制度在以团队为主的组织中存在着明显的局限性，全员培训制度具有明显的优势；最后，在对心理契约理论研究的基础上，得出了缔结科研团队心理契约的途径。

Borrowing ideals from the experience of American research universities while integrating it to the current concrete situation of Chinese research universities, this study arrival at a conclusion that on the competitiveness development and their selection of strategies Chinese research universities should put close attention to two aspects as followed: firstly, research universities\' competitiveness should get off along the road of intensiveness, catch three factors like resource, culture and capability, adopt appropriate selection of strategies to promote their competitiveness.

借鉴美国研究型大学的经验，结合当前我国研究型大学的具体情况，本研究提出我国研究型大学在竞争力发展及其策略选择中应关注的两个主要内容：一是研究型大学竞争力应走内涵发展的道路，注重资源、文化、能力建设，通过适当的策略选择来提升自己的竞争力。

The thesis contains five chapters. The first chapter summarizes the development and research of switched reluctance drive, discusses the main research direction, and explains the main work in this paper. In chapter 2, hardware system which includes the design of power converter and various control circuit is discussed. TMS320LF2407 DSP is used to design the hardware circuits of SRM control system, and design details including the current detection, position sensing, fault protection, speed detecting, keyboard and display etc. are provided. Because of the full use of the abundant peripheral resources of DSP, it comes to the aim simplifying the circuit structure and heightening the reliability. In chapter 3, the application of neural network on SRM control system is introduced, a new the application of neural network and the method of sampling is proposed and a simulation system based on Matlab/Simulink is established. Chapter 4 discusses the routine designing issue. Because the modularized programming method is adopted, and multi-interrupt processing technique is used, operation efficiency of the control software is highly raised. At last, the foregoing SRM control system is tested. Speed adjustment is realized, and other targets on the research and design of SRM control system are reached, which establishes a good foundation for further research.

本文共分五章，第一章概述了开关磁阻电机调速系统(Switched Reluctance Drive，简称SRD)及其发展和研究现状，论述了其主要研究方向，并说明了本文的主要工作；接下来的一章主要讨论了SRM的硬件系统，主要包括功率变换器的设计和各种控制电路的设计，本文以TMS320LF2407为核心设计了开关磁阻电机控制系统硬件电路，给出了包括电流检测、位置检测、故障保护、测速电路及键盘和显示电路等部分电路的详细设计，充分利用了DSP的丰富外设资源，达到了简化电路结构、提高运行可靠性的目的；第三章介绍了人工神经网络在开关磁阻电机控制系统中的应用，提出了一种新的应用方式(利用GPFN神经网络调节PI参数)以及如何采取样本，搭建了基于Matlab/Simulink的仿真系统；在第四章中，讨论了开关磁阻电机控制软件的设计，采用模块化编程方法，采用基于多中断的控制程序，提高了控制软件的效率；最后，对所设计的开关磁阻电机控制系统进行了实验，实现了电机调速，达到了开关磁阻电机控制系统研究和设计的预期目标，为更近一步研究打下了基础。

This dissertation focuses on land desertification of the middle reaches of the Tarim River. Taking the train of thought and methods that combining aerial remote sensing and historical material with ground investigation and indoor comprehensive analysis, macroanalysis with micro-analysis, qualitative research with quantitative research, and expressing the result of research by means of mapping, the author makes a systematic research on land desertification.

本文以塔里木河中游地区为研究区域，并以英巴扎地区作为典型区，根据对前人已有成果的学习和吸收，采用航空遥感与地面调查、历史资料与室内综合分析工作相结合，宏观分析与微观分析相结合，定性研究与定量研究相结合，最终以制图手段表现研究结果，并据此进一步综合阐述和探讨研究区域土地沙漠化特征与形成机制以及发展趋势和沙漠化的防治对策的思路方法，对研究区土地沙漠化进行了系统研究。

The former three chapters are about theoretical research, and the forth chapter is about empirical research. The theoretical research part generalizes the theoretical basis, theoretical model and the concept of city competitiveness both at home and abroad. According to these theories, the paper introduces the complete and explicit definition of city competitiveness and brings in a new city competitiveness model .The paper emphasizes on empirical research using the data in 2004 as sample, whose objects are ten big cities:Guangzhou, Shenzhen, Tianjin, Shenyang, Dalian, Nanjing, Hangzhou, Wuhan, Chongqing and Chengdu. Firstly, on the basis of mean square deviation method, it finds out both the scores of integrated competitiveness of cities and other factors, based on that analyze the relationship between them. And then the paper computes the scores of competitiveness of cities above by principal component analysis and sorts out them for assessment.

理论研究部分主要是概括的叙述了城市竞争力研究的理论基础和理论模型及国内外城市竞争力的概念，在此基础之上对城市竞争力给出了完整明确的定义，并提出了新的城市竞争力模型；全文的重点在实证分析部分，实证分析是以广州、深圳、天津、沈阳、大连、南京、杭州、武汉、重庆、成都10个城市为研究对象，以其2004年的数据为样本，首先用均方差的方法计算各城市综合竞争力与各要素竞争力的得分，以此来分析综合竞争力与各要素竞争力之间的关系，然后采用因子分析的方法计算2004年各城市综合竞争力的得分并给出排序进行评价。

In this chapter, I made a summary about the chief fruits and localization in this dissertation and indicated that the new direction for the further research is: the research on reification about control power of the focal corporation on supply chain, the research on meticulousness of materializing factors for control power of the focal corporation on supply chain and the positive research about appraising to control power of the focal corporation on supply chain.

本章总结了本文研究的主要成果和局限，同时指出了今后有待进一步深入研究的方向：供应链核心企业控制力的具体化研究、供应链核心企业控制力体现要素的细致化研究以及供应链核心企业控制力评价的实证性研究。

We do research on the transitions between states of network protocol,the protocol misusage detection model based on Markov chain,the framework of the IDS technology and protocol anormity after we discuss the current technology. The main research contents of this paper include: research on transitions between states of network protocol and session process, protocol misuage and the anomaly detection model based on Markov chain, the research of intrusion detection framework, more accurately model based on the characteristic of the network traffic and so on.

在分析了现有入侵检测系统的基础上，本文围绕典型网络协议状态转换、基于马尔可夫链的检测模型、入侵检测技术框架、以及协议异常等几个方面展开深入研究，主要工作内容包括：典型网络协议转换状态的分析和会话过程的研究；基于马尔可夫链的网络异常检测模型；分布式的检测架构；针对网络流量特征而提出了精确的检测模型等。

We expect it will benefit the industry field to break through the optical measuring limits at present by offering some new ideas. Optical measuring research based on moire interferometry has developed for several decades. The main idea of this research is to utilize the moire effect caused by two superimposed gratings of identical or similar spatial frequency. One is the reference grating and it is a virtual grating created by a computer program in this research; The other grating is the image of grating projected on the measured surface by the DLP projector, and this grating will distort because of the different sloped profile of the surface. To superimpose the program-created grating and the captured distorted grating will derive the so-called moire effect. This research combined the basic theory of optical interferometry and moire effect to project the different phases of the projected grating fringes by the phase-shifting method and compute the principal value of arguments between -π,π. In the end, the phase unwrapping program based on discrete Fourier transform of solving PDEs is used to unwrap the phase of the measured surface, and finally the surface profile is derived by the optical measuring system.

以叠纹干涉术为基础的光学检测研究之发展早已行之有年，而在本研究中所采用的投影叠纹法(Projection moiré)之主要精神在於藉由两道空间频率相近或相同的光栅相互叠加而成的效应，其中一道为参考光栅，而本研究中的参考光栅是以程式产生可调整不同空间频率的虚拟光栅；另一道则为投影至待测物表面的光栅影像，而在起伏高度不一的待测表面上的光栅影像会受到待测物表面起伏状况不同而在观测方向产生光栅投影条纹影像的歪曲变形，将电脑产生的参考光栅与由影像撷取装置所获取投影於待测物表面的光栅影像作叠合，便会产生所谓的叠纹效应；利用基本的光学干涉理论与叠纹效应结合，本研究中以相移法来改变投影於待测表面的光栅相位，再以相移法的理论反运算出在带有待测面各点高度资讯之介於-π，π相位主幅角，再以离散傅立叶转换解偏微分方程的相位重建程式还原待测面的相位值，以得知待测面之表面轮廓。

Its further development should follow the guidelines such as the integrity of research objects, the nativeness of thinking mode in research, the synthesization of research achievements, the applicability of research effects, and the...

努力实现体育心理学研究对象的整体化、研究成果的融合化、研究思路的本土化、研究效价的应用化和研究方法的实证化是我国体育心理学发展的合理选择

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。