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More then half year I didn't work, all the promises he made was still somewhere around, but he shouted at me: you think you didn't cost me, the flower on your head cost me 5$!

半年多的时间里我没有工作，结果誓言还在耳边，他却对我叫嚷，你以为你没花我钱么，你头上的花花了我五块钱呢！

In this article two functional modes of the Fly-back Converter (Continuous Conduct Mode and Discontinuous Conduct Mode) are particularly analyzed, which include their characteristics, applications, the critical pattern of two functional modes is argued, both the exact boundary from the angle of circuit parameters is crystallized, at the same time, basic principle of PFC under the DCM mode is introduced, which settle theoretical basis for the subsequent design; by establishing the mathematic model of the converter, a further investigation of the configuration is made, qualitatively and quantitatively, analyzed to settle exactly theoretical basis for the subsequent emulation and the experimental parameter; from the angle of steady-state analysis, the transfer function of the system is deduced to establish dynamic small-signal state equation, emulating the system with the help of matlab, then according to the simulation result and the theory of PFC revise the system, lastly, we adopt the project which add a zero-pole compensator to the voltage loop, by this way, a satisfied system performance is gained and the PFC scheme is ensured successfully; finally, based on the previously-done work, we combining with the situation of specific design requirement, acquired the numerical value of each unit devices in this converter

详细分析了反激式变换器的两种工作状态，连续模式(Continuous Conduct Mode ，简称CCM)和断续模式(Discontinuous Conduct Mode，简称DCM)以及各自的特点、应用场合，论证了两种工作状态的临界模式，从电路参数的角度明确了二者的界限，同时还介绍了DCM模式下PFC的基本原理，为后面的设计奠定理论基础；通过对整个变换器系统建立准确的数学模型，对此变换器的电路结构做了进一步的研究，定性、定量地分析了变换器各部分的工作状态，为仿真和实验参数的确定以及电路参数的优化提供理论依据；从稳态分析的角度，为系统建立了动态小信号状态方程并推导出系统的传递函数，利用matlab对系统进行仿真，进而根据仿真结果以及PFC的相关理论对系统进行校正，采用在电压环加入零点—极点补偿器的设计方案，得到了满意的系统特性并且保证了PFC的顺利实现；最后，在前面所做工作的基础上，结合设计要求计算出此变换器系统中每个元器件的数值，利用Pspice对其进行了仿真、优化，然后根据仿真结果搭建了硬件电路。

At the end of this presentation, the audience will have a greater understanding of the FOI Act and it's impact on their work

通过陈述，听众对 FOI Act 有了一个很深的理解并对其今后的工作产生影响。

For the sake of a harmonious world, and coexistence between people and nature, Andersen constructed a beautiful and idealistic homeland that transcends national boundaries, and at the same time, in the work of Chinese artists, this same sort of childlike innocence can be seen everywhere, some of which draw on direct experience of the wondrous and moving aspects of life, and also express the simplicity and forthrightness of nature.

安徒生的童话又是包含着对自然和人生普遍大爱的诗篇，为世界的和谐和人与自然的共处营造了美丽的理想家园，同样，在中国艺术家的作品中，这种童话般单纯的情感也随处可见，其中有体会生命的惊奇与感动，也有表达自然的朴素与率真。

With the new model and the program, steady seepage field in work period, free surface position variable law with time at upper reaches in unsteady seepage period and seepage field variable law on the condition of different seepage coefficient and water decrease speed are stimulated.

利用建立的模型和编制的程序能模拟正常运行期的稳定渗流场、非稳定渗流期上游水位变化时自由面位置随时间的变化规律以及不同的水位下降速度时渗流场的变化规律。

From now on our nation will belong to the community of the peace-loving and freedom-loving nations of the world and work courageously and industriously to foster its own civilization and well-being and at the time to promote world peace and freedom.

我们民族将从此列入爱好和平自由的世界个民族大家庭，以勇敢而勤劳的姿态工作着，创造自己的文明和幸福，同时也促进世界的和平和自由。

The memory arbitrator acts as an arbitrator when the protocol process and the MCU access the data buffer at the sametime.the UTMI interface is the analogy fronter of the USB2.0 interface.because the host controller deals with non-communication work depending on the MCU, it needs the MCU interface to connect the MCU.

其中协议处理模块负责处理所有的USB的数据的读写以及通信的控制，是整个主控制器的核心部分；数据缓冲区模块实现对接收或者发送的数据的缓冲处理；存储器仲裁模块解决协议处理模块和微控制器模块同时访问数据缓冲区模块的冲突问题；UTMI接口模块用作USB2.0接口的模拟前端；微控制器模块是与外部微控制器的接口，因为控制器除了要处理USB通信的工作，还必须依*外部微控制器来处理非USB通信的工作。

The hydraulic loading system is developed and used to study the frost heaving characteristics of the subgrade soils under dynamic loading in closed system and open system . On the base of these work, the conclusions are as follows:1. Because of the the fine-grained fill, the frost deformations of Beijing-Baotou railway subgrade and Baotou-Lanzhou railway subgrade are holistically irregular, and great discrepancies exist among the frost heavings of subgrade at different sections.

本文根据冻害较严重的京包铁路、包兰铁路的气候、地质条件的调查和路基冻胀变形监测，结合路基土的性质对京包铁路、包兰铁路的冻害给出了评价；为了模拟振动荷载作用下土的冻胀，研制了液压动力加载系统；在室内采用实验方法对列车动荷载作用下包兰线路基粉质土在开敞、封闭系统下的冻胀特性进行模拟。

Firstly, the background and the significant of the research is discussed, modern software engineering and its development is also outlined, and the present states and the reason of using the modern software engineering in power systems are also analyzed. Secondly, related theories and methods of the modern software engineering are systematically given in details, which establish the basis of the software development with the software engineering in power systems. Thirdly, the necessity of the developed power system software with the software engineering is analyzed deeply and the key techniques in carrying out the software development with the software engineering are discussed. Based on these, a concrete approach about the software development with the software engineering is proposed. And then, the software design process of 'GPS synchronous monitoring system of Hunan power grid'is given to demonstrate the utilization of the approach proposed. Subsequently, quality and efficiency of the software is analyzed, which indicates the validity of the method used. At last, the main work and fruitage of the thesis is concluded, and the further research is also pointed out.

论文首先论述了课题研究的背景和意义，概述了现代软件工程及其发展，分析了现代软件工程在电力系统中的应用现状及其原因；然后系统地阐述了现代软件工程的相关理论和方法，奠定了电力系统软件工程化开发的理论基础；接着分析了电力系统软件工程化开发的必要性，探讨了实施工程化开发涉及到的关键技术，结合现代软件工程的理论和方法，提出了一种电力系统软件工程化开发的具体方法；之后以湖南电力系统状态GPS 同步监测系统软件的开发为例，详细地阐述了该工程化方法在电力系统软件开发中的具体实践过程，并分析了软件开发的结果，指出了该方法是解决软件开发质量和效率问题的有效途径；论文最后对主要工作和成果进行了总结，并指出了有待进一步开展的工作。

After receiving his Bachelor of Arts in Graphic Design from California State University, Fullerton, he went on to complete extra course work in advertising and web programming at some of New York City's top schools.

后收到他的文学士在平面设计由美国加州州立大学，富勒顿，他曾完成额外的工作，当然在广告和Web编程的一些新的纽约市的顶尖学校。

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。

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。