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Especially, the technology of Automatic Gain Control and signal processing are studied which are key factors working on the performance of the receiver. Based on analyzing the theory of automatic Gain Control, operational amplifiers 0P37 and logarithmic D/Aconverter AD7111A are used to design variable gain amplifiers which can be controlled numerally, A/D convector LTC1405 is Used to test the echo, Complex Programmable Logic device is used for controller, and an arithmetic is designed for automatic Gain Control which is simulated and analyzed in order to test its feasibility.

本文在分析自动增益控制AGC原理的基础上，采用集成运放OP37和数控增益衰减器AD7111A设计可数字控制的可变增益运放模块；采用高速A／D转换器LTC1405作为回波信号检测模块；采用复杂可编程逻辑器件CPLD作为核心控制模块，构成数字自动增益控制电路，并设计粗调和细调步进控制相结合的算法，对回波信号的增益进行精确而快速的调节控制，使回波信号振幅快速稳定在设计指标范围内，利于接收机后续信号处理电路对回波信号作进一步的处理。

The assessment formula for shear capacity was established as well, and in which various impact factors of shear strength was considered comprehensively.3. Directed against the main forms of transverse connection in concrete beam bridges, model test and finite element analysis were carried out to find the impact laws of damage on concrete T-beam bridges, in which the three ways of hinged joint, flange rigid connection and cross slab rigid connection were considered. Transverse distribution and degenerate state of transverse connection were studied under various damage conditions. Based on the analysis of test and simulation results, the rule of live load adjustment coefficient of T-beam bridge was put forward, as well as the calculation formula.4. In view of the influence of the damaged transverse connections to load effect, the load effect model was amended by live load adjustment coefficient.

依据损伤出现频率与重要性等级，提出典型损伤混凝土梁式桥按体系损伤、构件损伤和材料损伤三个层次进行评定的原则。2、基于构件和材料层次损伤评估研究成果，对比分析损伤机理和适用条件，提出了《公路钢筋混凝土及预应力混凝土桥涵设计规范》(JTG D62-2004)抗弯承载力修正计算公式、抗剪承载力修正计算公式以及综合考虑抗剪强度影响因素的抗剪承载力评定公式。3、针对混凝土梁式桥主要横向连接形式，分别按铰结、翼缘刚接和横隔梁刚性连接损伤对T桥梁桥承载能力的影响进行了模型试验和有限元分析，研究了不同损伤工况对T梁桥荷载横向分配的影响及横向连接状态退化情况。

A Dempster evidence combination method based on node test and a fuzzy method of evidence combination based on PCA test were presented.

提出了一种新的基于Huber估计的抗差最小二乘数据协调算法。

The function of EM65-2 on the RL95-2 was detected by in vivo and in vitro test. We established the protocol of making the human RL95-2 endometrial carcinoma xenografts in the ovariectomized nude mice at first. Secondly we detect the function of EM65-2 on the subcutaneous enografts with or without benzoate estradiol and estrone. The function was evaluated by the change of tumor volume and the weight of the tumor and the uterine at the end of the test.

VEGF的调控分也分为体内和体外两部分进行，体内部分利用前面实验中获得的不同条件下的裸鼠的皮下移植瘤和小鼠的子宫，通过免疫组化方法检测不同雌激素和抗雌激素的条件下的VEGF的表达情况；体外部分，首先建立RL95-2细胞的无血清培养方法，然后建立无雌激素正常pH、无雌激素低pH的培养液和雌二醇浓度为10nM的正常pH等三种条件培养液，于培养的不同时间分离上清液，通过Elisa法检测上清中VEGF的变化。

First, it begins with the study of the centralized CFAR detection with multiple sensors. The non-CFAR problem is analyzed; the necessity for local CFAR processing is established. The effective local CFAR processing scheme is proposed, i.e. the local test statistic. The upper limit of the optimal performance is proved for the distributed CFAR detection based on LTS. Then, the new schemes based on LTS are analyzed in condition of signal pulse, and then the analysis is expanded to the case of multiple pulses. Next, the feedback mechanism is introduced. At last, the invariant test is used to reveal the essence of CFAR processing. It explains the necessity of local CFAR processing in the distributed CFAR detection at a higher level.

本文深入研究了这方面的问题，首先从多传感器集中式 CFAR 检测入手，分析其存在的非 CFAR 问题，论述局部 CFAR 处理的必要性，提出有效的局部 CFAR 处理方法：局部检测统计量，证明基于局部检测统计量的分布式 CFAR 检测的最优性能上限，分析基于局部检测统计量的新方案在单脉冲条件下的性能，并且进一步拓展到多脉冲非相干积累的情况，然后引入反馈机制，最后利用不变检验的概念揭示 CFAR 处理的机理，从更高的层次上解释分布式 CFAR 检测做局部 CFAR 处理的必要性。

Mechanisms of heat affected zone liquation and liquation cracking in GH150 alloy were investigated by using varestraint test and hot ductility test in conjunction with the differential thermal analysis and optical, scanning electron microsopy. On heating,γ/C liquation take places in the HAZ above 1250℃. When the temperature reaches 1353- 1375℃, a large amount of liquid particles due to initial melting can be observed within the grains near the fusion boundary. On cooling,γ/C eutectic and γ/ Laves phase eutectic take place at 1273 and 1200℃ respectively.

采用可变拘束试验、热塑性试验、差热分析、光镜与扫描电镜观察，研究了GH150合金焊接热影响区液化及液化裂纹形成机制加热过程中温度高于1250℃的热影响区由于γ／C共晶产生液化，在温度达到1353℃（固相约至1375℃的近维区，晶内出现大量液化点冷却过程中温度在1273和1200℃时形成γ／C共晶和γ／Laves相共晶。

Then, the integrated and embedded self-test circuit was designed based on single chip ADUC812 and nixie tube etc. The self-test software was programmed based on assembly language.

采用ADUC812单片机、数码管等，设计了集成化、嵌入式的自检测系统硬件电路，并利用汇编语言编程实现了机内自检测软件。

Satisfaction is an emotional bond between customers and the brand,and based on that we test the influence of function,outer design on satisfaction and measure the customer\'s value to test the degree to which satisfaction will generate trust and loyalty.

首先探索品牌手机专业功能和品牌手机外型设计对顾客满意度的影响，以了解品牌形象与顾客满意度之间之关连，并期望藉由概念化以及衡量顾客的价值观，深入研究为什么以及用何方法可使顾客满意转变成品牌信任与品牌忠诚。

The stall/spin test fly for one trainer has been conducted, which is a difficult and great risk project. It is studied in the test fly that entering stall/spin and the effect of all deflection surface on stall/spin and the effect of nose outshoot and gravity location and so on. Using the oscillatory type recovery control law recover successfully from flat spin.

在对某教练机进行的技术难度大、高风险的失速／尾旋试飞研究中，进行了失速／尾旋的进入方法、失速／尾旋的特征、改出特性的研究，同时研究了各舵面对失速／尾旋特性的影响、机头突出物的影响、重心位置等因素的影响，使用振荡型操纵规律成功地改出了平衡尾旋。

By means of experimental research on every criterion and its test process in the existing standard of industrial APP,some problems and shortcomings in the standard are found,for example,low criterions in phosphorus pentoxide content,average polymerization degree and granularity,imperfect test means in nitrogen content,average polymerization degree,and so on.

通过对工业聚磷酸铵行业标准中各项指标和检验方法的实验研究，发现标准中存在一些问题和不足，如五氧化二磷含量、平均聚合度、粒度等的指标要求低及氮含量和平均聚合度的检验方法不理想等。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。