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Based on the description of Mohr-Coulomb and Drucker-Prager yield criteria with invariant of stress, a formula for error estimation of unit strain energy between the two stress states is established in the deviatoric plane of the principal stress space, which satisfies M-C and D-P yield criteria respectively. A general procedure to transform M-C material parameters to D-P analysis parameters is obtained.

基于应变比能的概念，在偏平面内建立了分别进入Mohr-Coulomb和Drucker-Prager屈服面时所需形状改变比能的差值公式，获得M-C材料参数向D-P计算参数等效的统一性方案。

By means of the comparison principle and the method of upper and lower solution,the corresponding sufficient conditions under which the models have a solution or no solution are obtained. If other parameters are given,the controllable parameters such as the population of release and the times of impulsive harvest are estimated respectively.

基于比较定理和上下解方法，分别获得了模型有解或无解的充分条件，估计了相关可控参数，即脉冲投放模型中的投放量以及脉冲收获模型中的脉冲收获次数。

The dissertation includes the work as follows: Firstly, we present a random graph model with spatial reuse for a dense MANET which using directional antennas. The analytic formula of several important performance parameters for the MANET are obtained under the DSR routing protocol, such as the average flooding distance, the probability generating function of the flooding distance, the probability of a flooding route to be symmetrically valid, the average time to find a symmetrically valid route and the cost to successfully route a data packet to its destination. We compare the two models with spatial reuse and without spatial reuse by evaluating these parameters. It is shown that the spatial reuse model is much more effcctive in terms of the performance of the dense network with directional antenna, because the bigger is the degree of spatial reuse, the smaller is the average flooding distance.

在定向天线技术的支持下，建立了移动自组网络空间可重用的贝努利随机图模型，获得了DSR路由协议下平均泛洪距离的解析公式和泛洪距离的概率母函数：给出了有效对称路由概率、发现有效路由平均时间、成功路由代价等关键性能参数的解析分析；在网络性能参数定量分析的基础上，对空间可重用和无重用的网络进行了比较分析，结果显示空间重用度增大，则平均泛洪距离、路由发现时延、网络代价减少。

In this method, to maintain the stochastic property of the transition probability matrix, population parameters and basic parameters are introduced, and then the distribution of agents is gotten.

该方法通过设置母体参数和基本参数的方法来得到保持转移概率的随机性，进而得到了整个多agent系统的基于信誉的分布情况。

62 Log interpretation is the process by which these measurable parameters are translated into the desired petrophysical parameters of porosity, hydrocarbon saturation, permeability, producibility, lithology, etc.

答案：测井解释就是通过测得参数转化为被要求的物性参数(孔隙度，烃类饱和度，渗透率，产能，岩性)的方法。

Then the system parameters were gain from solving non-linear equation. First, the figure which the circle projecting on the CCD plane by the camera led is proved as an ellipse, and find out the reference point coordinate by calculate the canters of ellipses. Then the system parameters were gained from calculating the formulas in two pictures.

首先证明了参考圆在合适条件下经过相机镜头所成的像是椭圆，通过椭圆的中心求出参考圆的中心，就得到了各个参考点的位置；然后通过各个参考点分别在两个相机坐标系中的位置来确定相机之间位置关系参数，就完成了系统的标定。

In order to improve the control performance, when the image distortion is too large resulting from camera obliquity, these parameters are transformed from image coordinate to robot coordinate through projective transformation, while parameters such as position and curvature are not necessarily provided.

为改善控制性能，当由于摄像机倾角较大而引起的图像畸变较大时，利用射影变换把参考轨线参数从图像坐标系映射到机器人坐标系，而无须提供位置、曲率等参数。

Several essential problems about the mechanism, such as the relations between cam angles and geometric parameters, the allowable values of some angular parameters, the equations of cam prole and the return motion of rocker AC, are solved.

关于这种机构的几个基本问题得到解决，如凸轮角度和几何参数的关系，一些角参数的允许值，凸轮的轮廓线和摇杆的回行运动的方程。

It is suggested that the index (1-t2) controlled by all the primary design parameters could be used as the total objective for the hull/propulsor interaction characteristic optimization, which can be carried out by sub-objective optimization controlled by parts of the design parameters and iteration procedure.

推荐采用受控于全部主参数的指标(1-t2)作为船体与组合推进器相互干扰特性优化的总目标，提出了用部分主参数控制的对应分目标优化和迭代来实现总目标优化的简明策略。

Force strength brand DCC800 parameters Serial program unit technical parameters 1 KN8000 clamping force 2 mm760 clamping trip 3 mould thickness (minimum - most mm400-950) 4 template size mm1400 level x x 1395 5 LinZhu elder brother mm910 910 from within 6 elder brother LinZhu mm180 diameter 7 booster shot force (KN665 8 mm760 trip shot materials 9 hammer mm80 diameter, 90, 100 10 shot Kg7.2 feed, and 9.1 11.2 11 casting Mpa132.8, 1.01, 85 12 casting cm2600 area, 760, 940 13 biggest casting 40Mpa area (cm22000) 14 shot cm2mm - 250 Kg/position 15 punch out mm297 distance 16 ejection chamber flange diameter mm200 17 ejection chamber flange plate height mm20 set out 18 top KN315 output 19 the mm180 trip 20 Mpa14 work pressure system 21 KW37 motor power 22 tank L1200 volume 23 machine Kg39400 weight 24 machine envelop dimensions by 2010 mm8

力劲牌 DCC800参数序号项目单位技术参数 1锁模力KN8000 2 锁模行程 mm760 3模具厚度mm400-950 4模板尺寸mm1400×1395 5哥林柱内距mm910×910 6哥林柱直径mm180 7压射力KN665 8射料行程mm760 9锤头直径mm80、90、100 10 射料量 Kg7.2、9.1、11.2 11铸造压力Mpa132.8、104.9、85 12铸造面积cm2600、760、940 13最大铸造面积（40Mpa）cm22000 14压射位置Kg/ cm2mm-250 15冲头推出距离mm297 16压射室法兰直径mm200 17 压射室法兰凸出定板高度mm20 18顶出力KN315 19顶出行程mm180 20 系统工作压力Mpa14 21电机功率KW37 22油箱容积L1200 23机器重量Kg39400 24机器外型尺寸mm8660×2010×2780

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。