多值性

Based on the elliptic curve cryptosystem, a multi-key sharing scheme in which the Lagrange interpolation polynomial is used and the cheaters can be detected is presented.

文章利用拉格朗日插值的思想，提出了一种基于椭圆曲线的可防欺诈的动态多密钥共享方案；方案中每个参与者的子密钥可以不受限制的重复使用，因此在更新主密钥的时候，无需更改参与者的子密钥，从而减少了可信中心与参与者之间的通信量；方案可灵活地增删参与者，且安全性是基于椭圆曲线离散对数问题的难解性，因而其安全性比在有限域上更高；方案实现过程中解决了检验子密钥真伪的问题。

By a more precise estimation of maximum value of a B-spline basis function and utilizing of the local support property of B-spline basis function, the control points of a set of compatible B-spline curves are reduced, which makes the skinning algorithm more effective.

对B样条基函数的最大值进行了更为精确的估计，并且充分利用B样条基函数的局部支撑性，尽可能多地删除相容性处理后B样条曲线的控制点，使得蒙皮算法更加有效。

The deformation damage object is defined as the max damage of all elements in net forging and the deformation uniformity object is defined as mean square deviation of the equivalent-strain in each element and the average equivalent-strain of all elements.

用锻件所有单元的最大损伤值作为衡量锻件变形损伤的指标，用锻件所有单元体的等效应变与整个终锻件的平均等效应变的均方差，作为锻件变形均匀性的指标，构造了多目标优化问题的评价函数。

The method was introduced firstly with which LQG control and open loop system mean value and mean square error of a ship lateral motion were calculated.

首先介绍船舶横向运动多变量LQG控制与开环系统均值、均方差计算方法，提出应用两种系统均方盖相对值这一统计指标评价系统减摇控制的鲁棒性。

Results The patients were predominently female teenagers with a history of gradual onset of bilateral hearing loss, pure tone audiometry revealed symmetric ascending audiograms with moderate hearing loss at frequencies below 1 kHz, but relatively normal hearing at 2 kHz and above. Speech reception thresholds were between 40 to 85 dB HL, discrimination score was from 29% to 68%. Stapedial reflex, auditory brainstem response and compound action potentials were absent or threshold elevated disproportionately to the pure tone threshold. All of the patients had normal cochlear microphonics and robust spontaneously and transiently evoked otoacoustic emissions, the TEOAE showed no contralateral suppression effects as seen in normal subjects.

结果 该病多在青春期后起病，女性较多发，表现为渐进性双耳对称性听力下降，纯音听力以低频损失为主，语言接受阈升高，分辨率下降，镫骨肌反射及ABR引不出或阈值明显升高与纯音听力不成比例，耳蜗微音器电位正常，听神经动作电位引不出，耳声发射波幅高、时程长且不为对侧声刺激所抑制。

In this paper, we study the existence of sign-changing and multiple nontrivial solutions for a kind of quasilinear elliptic equations with Dirichlet boundary value by applying minimax methods and Morse theory.

本文我们将应用极大极小方法和Morse理论研究一类拟线性椭圆方程Dirichlet边值问题多解的存在性和解的变号性质。设Ω是R~N(N≥1)中的有界区域，具有光滑边界？

On the basis of studying the relationship among autocorrelativity, balance and run length , the distribution of multinomial relativity function value for balance sequence was presented.

在研究序列自相关性与平衡性、游程的关系的基础上，给出了平衡序列多项相关值的分布。

In this paper,an optimal filtering method based on the Singular Value Decompositiontechnique for Multi-Channel Systems with Multiplicative Noise is proposed.

提出 1种基于奇异值分解的多通道带乘性噪声系统的最优滤波方法。

It is significant to study the existence and multiplicity of solutions to these problems not only in the theory but in practice.

本文主要研究两种不同形式的n阶多点边值问题的正解存在性。

The purpose of Chapter 4 is to study the solvability of multi-point boundary value problems at resonance, and establishs some existence theorems under nonlinear growth restriction. Our method is based upon the coincidence degree theory. In Section 1, we consider the same sign case, and in Section 2, discuss the non-same sign case.

第四章研究了具共振条件下二阶非线性微分方程多点边值问题解的存在性，通过使用重合度理论和一些分析技巧，建立了一系列解存在的充分条件，其中在第一节考虑了同号情形，在第二节考虑了异号情形。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐