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分析曲线

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Analyses of loci in the π plane and meridian line s show that the parabolic and hyperbolic type failure envelopes have no influences on the shape of the.

对改进式所作的π平面极限线和子午线分析表明,采用抛物线和双曲线形强度包络线基本上不会改变原准则在π平面上的极限线形状,但子午线由直线改为曲线,极限面在主应力空间内分别为抛物面和双曲面,其锥顶距坐标原点也比采用线性强度包络线的要小。

Today, all the known proxy digital signature schemes has the same problem that can't provide the overall, complete, reliable control ability on the stretch of proxy digital signature power. In this paper, we advances a new proxy digital signature scheme based on hyperelliptic curve discrete algorithmic problems which is called as Xiao's Hyperelliptic Curve Limited Proxy Signature.

本文针对目前的各种代理签名方案所存在的无法实现对代理签名者的代理签名权力进行全面、完整、可靠地控制的问题,提出了一种具有限制代理签名者行使代理签名权力的基于超椭圆曲线离散对数问题的新型可控代理签名方案XHCLPS,同时对这一方案的复杂性和安全性进行了分析。

When the cooling rates are 1.0 × 10^14 K/s and 1.0 × 10^13 K/s, the amorphous structures are formed mainly with the 1551 and 1541 bondtypes or polyhedron basic cluster ( 13 1 10 2) and icosahedron cluster ( 12 0 12 0) in the system.

采用双体分布函数g曲线、Honeycutt-Andersen键型指数法和原子团类型指数法对凝固过程中微观结构的变化进行了分析。

For the ill conditioned load flow caused by the error produced in the transformation from electricity quantities to average power, direct current load flow and sensitivity vector are presented to find out the ill node, then by adjusting the load curve and generation curve in a certain principle, which is shown in detail with several flow charts, a new operation mode is reestablished to ensure the convergence of the calculation. Optimal multiplier method is proposed to work out the least square solution according to ill conditioned structural power network. The electricity quantities flow method enhances the reliability and accuracy of the calculation of the power transmission losses.

该方法可根据当前输电网中各个变电站24小时的电量记录,利用电量潮流计算对输电网总线损和各条线路损耗进行计算,使计算的精度满足降损措施分析和指标考核的要求;并且对于由负荷出力曲线转化成平均功率计算潮流时引入的误差,进而导致潮流计算不收敛的情况,采用直流潮流法,依据相角对有功功率的灵敏度向量判断出"网络异常点",并且给出了解决此种情况的方法流程图;针对结构病态的电力系统潮流计算不收敛的情况,运用非线性约束优化方法中的最优乘子法求解潮流方程的最小二乘解,从而解决了电量潮流法计算理论线损时的收敛性问题,增强了该方法的适用性。

Parametric analysis indicates that the optimal solution's trajectory is piecewise linear, and there is a strong relationship between the breakpoints and the infeasibility phenomena.

参数分析表明最优解轨迹的性态是一条分段线性曲线,解轨迹上的破点和不可行现象存在密切关系。

Firstly, the wheel-rails adhesion during braking is researched, and the optimal adhesion is proved to be existed at the inflexion point of speed.

在本文中,首先研究制动过程中轮轨间的粘着分析,指出轮轴速度曲线的拐点即是粘着最佳位置。

Based on analyzing the test data ,three variety types of isothermal adsorption and desorption curves are confirmed . The first type is that the hole structure is provided with slit capillary bore the second is usually the type of upgrowthing one end nipped unparallel crevice the third belongs to the pores shaped " inkpot ".

在测试数据分析的基础上,确定了等温吸附和脱附曲线3种类型:第1类属孔结构是具有平行权构成的狭缝毛细孔型;第2类为发育一端尖灭的不平行的裂隙型;第3类属"墨水瓶"型孔。

The maincontents of this thesis include:Firstly,by using inherent relationship between region integral and curve integral,designing the image transform operator,a novel snake model using both boundary andregion information was proposed,which more directly integrated the prior knowledgeincluding region information with the traditional deformable model,so that the abilityabout evolving contour curve was improved.

本论文将以严密的数学理论、可靠的物理原理和实际的应用背景为出发点,研究这一图像处理和分析的基本问题,并相应开展了以下几个方面的工作:首先,本论文利用区域积分与曲线积分之间转化的内在联系,通过设计相应的图像变换算子,提出了一种基于边缘与区域信息的图像可变形轮廓提取模型。

This course mainly contents real number muster and function, limit of number sequence, limit of function, continuity, derived number and differential, differential mean value theorem and its application, completeness of real number, integral, series(including positive series and Fourier series), multiple- differential, double integral, integral with parameter, curve integral, camber integral and so on.

理解和掌握《数学分析》的概念、理论和方法,对于学生加深理解数学的基本思想和方法,培养抽象思维能力和逻辑思维能力,提高数学素养具有重要的意义。主要内容包括:实数集和函数,数列极限,函数极限,连续性,导数和微分,微分中值定理及其应用,实数完备性,积分、级数(包括幂级数、Fourier级数)、多元微分学、重积分、含参变量积分、曲线积分、曲面积分等。

The whole process of moment-curvature relationship for RC beam was analyzed with the relative depth of compressive zone of the beam about 0.15 using the strip integral method and computer programme. The relationships between moment and strain of concrete, strain of steel, depth of compressive zone were got.

采用条带积分法,应用计算机编程,对相对受压区高度为0.15左右的钢筋混凝土梁的弯矩-曲率关系进行全过程分析,得出弯矩-曲率关系曲线,并给出弯矩与混凝土应变、钢筋应变及梁的相对受压区高度的对应关系。

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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

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