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In the second part, we give the analyses mode. On the base of research the literature on validity of system, author gave the analyses mode on how to research the validity of the intendance system of Government Procurement.

笔者在对前人关于制度有效性研究成果进行分析的基础上，提出我国政府采购监督制度有效性的分析框架，认为有效的政府采购监督制度必须满足两个基本要件：该制度必须是符合目标的；该制度必须是符合条件的。

Beginning with wave equation, the paper has deduced the propagation of gauss pulses in single mode fiber and fiber grating transmission compensation. The characteristics of cascaded phase-shift gratings are discussed by numerical simulations of coupled-mode theory and T-matrix method. The experimental works and measurement results are shown in this paper. On the other hand, we have introduced the basic theory of EDFA and figured out the characteristics for EDFA at different conditions by numerical simulation. Some experimental results for EDFA are also presented here. In this article, you can find the influence on Optical Fiber Amplifier by Gain Tilt, especially, the negative effect on CSO in CATV transmission system.

论文首先从波动方程入手，对高斯脉冲在单模光纤中的传播演化及光纤光栅透射补偿进行了详细的研究；较系统地介绍了光纤光栅的耦合模理论，并将传输矩阵计算法用于计算级连相移光纤光栅的光学特性；重点介绍了作者在光纤光栅刻制及特性测量方面所做的一些实验研究工作；较系统介绍了EDFA的基本理论，计算出各种条件下EDFA的光学特性，并进行了一些实验研究；综合分析光纤放大器对光纤传输系统的影响，特别分析了光纤放大器增益不平坦对光纤CATV系统中CSO恶化的原因及其解决方法，并研究了光纤布拉格光栅在稳定980nm泵浦源输出功率和输出波长方面的应用；结合一个基于光纤光栅和光纤放大器的光纤用户接入网方案，对光纤用户接入网的若干问题进行了理论与初步的实验研究。

According to the different face representation mode, there are four identifying methods. They are the mode identifying method based on geometry feature vector, the feature vector identifying method based on algebra feature vector, the facial feature extraction method based on NN and design method of sorter.

根据表征方式的不同，人脸识别方法有：基于层次聚类的几何特征矢量模式识别法、基于代数特征矢量的特征矢量识别法、基于神经网络的人脸特征提取和分类器设计法。

These antennas can cover GSM900/DCS/PCS/UMTS operation. In the chapter 2, the antenna is designed based on the concept of monopole antenna. Furthermore, the antenna structure have two radiant paths and coupled each other at tail end to do impedance matching. In addition, to raise distance between radiation plane and ground will avoid capacitative effect effectually. In the chapter 3, the antenna is designed based on the concept of planar inverted-F antenna. Furthermore, that the antenna structure have two radiant paths and coupled each other at tail end to do impedance matching is similar to chapter 2. But there is a difference in them. We can choose the short position to change input impedance at this structure. In the chapter 4, the antenna is designed based on the concept of planar inverted-F antenna which takes coupled-fed. It will produce the first mode and high-order mode near the frequency, 900MHz. The feature of this type is to reduce the volume effectually. This antenna can not only cover GSM900/DCS/PCS/UMTS operation but maintain good radiation efficiency. Finally, we will compare three antennas, and develop procedure with industrial view, and propose the prospect of the GSM/GPRS antenna in PND, as a conclusion.

在第二章中，我们使用单极天线设计概念，使用双路径架构并於末端耦合来对天线阻抗做匹配，产生涵盖GSM900/DCS/PCS/UMTS四频操作频带，并提高与接地面的辐射高度，以避免电容效应，使天线具有良好的辐射特性；在第三章中，使用倒F形天线设计概念，使用双路径架构於末端耦合，并於辐射臂上采取适当接地点电感效应作输入阻抗匹配，达成涵盖GSM900/DCS/PCS/UMTS系统的四个操作频带；在第四章中，采用倒F形架构并使用耦合馈入方式，使得长辐射金属臂在低频900 MHz附近产生共振，产生低频基频模态及高阶模态，以达成宽频及频宽涵盖GSM900/DCS/PCS/UMTS频带操作，并有效缩减使用体积；最后，分别比较此三种架构的优缺点，再加以业界角度来思考，研发产品天线的流程及思考方向，以及天线应用於可携式导航装置中未来的展望作为本论文的总结。

Then the paper presents a novel-working mode of Boost-Forward single-stage Power Factor Correctors based on the analysis. And get the principle of the conduction mode and the method to control the voltage of the buck capacitor after the analysis of the boundary mode of the PFC converter and the DC-DC converter.

在此基础上，本文首次提出了一种全新的临界工作模式下的单级功率因数校正电路，在对PFC变换器及DC/DC变换器工作在连续及不连续的边界条件进行了讨论后，得出了电路工作状态的精确解并提出了控制储能电容电压的临界点工作方式。

To a small capacitance, the shell into the chassis, from hardware to software, the production process, involving all sorts of diverse suppliers, the general mode of production, on the management of these suppliers can not operate effetely, then a new mode of production, a combination of high-tech products and updating fast, the JIT production mode, and what will do?

小到一个电容，大到机箱外壳，从硬件到软件，这个生产过程中，涉及到各种各样形形色色的供应商，普通的生产模式下，对这些供应商的管理也不能做到手到擒来的效果，那么在一种全新的生产模式下，一种能结合电脑高科技产品换代快，更新快的 JIT 生产模式下，又将会采用怎么的管理方式呢？

According to the aspect of collections of the history data, towards the collection or searching instance of the similar typical construction relevant to the pre-estimate construction, the prediction mode can be established in separate way against the ration valuation mode. The prediction-mode formed with fuzzy can be used to issue the cost of pre-construction based on adjoined degree of the typical construction and the proposed-construction. This adjoin degree is established in the engineering characterization list of elements which is established beforehand. With reference to

对于以定额计价模式为主的报价资料预测拟建工程造价的，可采用以模糊数学建立的预测模型，以事先建立的工程特征元素表确定典型工程与拟建工程之间的贴近度，利用预测模型对拟建工程进行报价；对于以工程量清单为主的报价资料拟建工程造价的，可采用以灰色理论为基础的数学工具，以灰色关联度确定工程间贴近程度，结合模糊数学建立的预测模型并利用灰色理论建立相关的预测模型对拟建工程进行报价。

This article according to the actual application of Rapid-drop gate, meanwhile combine the entire characteristics test of pump model which was developed on the high accuracy pump model test platform of the south-to-north water transferring project water the model, mainly includes the water pump operating mode, the water pump applies the brake the operating mode and the hydraulic turbine operating mode, take a runner as the object, makes 3 to place the angle to 5 leaf blades the entire characteristics test.

本文根据快速闸门的实际运用情况，同时结合了高精度南水北调工程水泵模型同台测试试验台上开展的模型泵全特性试验，试验主要包括水泵工况、水泵制动工况和水轮机工况，以一个转轮为对象，做3至5个叶片安放角度的全特性试验。

Using this method, the effect of the PM-PCF structure on the optical characteristic parameters, including modal field diameters,effective refractive index of space-filling mode, normalized frequency, mode field and single-polarization single-mode region etc., are studied systemly.

在第三章，通过全矢量有限元分析方法详细地分析了保偏光子晶体光纤结构参数对光子晶体光纤的光学特性影响，包括对单偏振单模光子晶体光纤的模场直径、基空间填充模的有效折射率、归一化频率、模场分布、单偏振单模区域等一系列光学特性参数进行了分析。

The system simulation model is implemented in PSPICE. The steady-state simulation performance of SCLRM in both self-exciting operation mode and inverter feeding mode are studied, and the effect on the steady-state performance by the motor parameters and the driving mode are also simulated, verified by the experimental results.

建立了基于PSPICE的系统仿真模型，对SCLRM在自激方式和逆变器驱动方式下的稳态运行特性进行了仿真计算，分析了电机参数及驱动方式对稳态电压、电流及电磁转矩的影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。