A Strong Subfeasible Directions Algorithm with Superlinear Convergence

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Alternative Theorems and Sufficient Conditions of Global Convergence for a Class of Feasible Direction Algorithms

In this paper,two alternative theorems which differ from Theorem 10.2.6 in [1] andTheorem 1 in [3] are presented for a class of feasible direction algorithms.On the basis of alternativetheorems,furthermore,two sufficient conditions of global convergence of this class of algorithms areobtained.     

基于多模板中值滤波器的地形图创建方法

非结构化道路环境感知的重点在于建立能反映真实路面情况的地形图。在利用激光扫描仪建立地形高度图的过程中,采用多模板中值滤波去除地形高度图中的噪声。在滤波过程中,根据激光运动的持续性和地形空间的持续性所带来的限制条件,引入高度确认度的概念。然后根据噪声形成原理的不同,利用各像素确认度的不同区分不同噪声,进而采用不同模板的中值滤波器。三维仿真试验证明该滤波器能有效地去除高度图中各种不同类型的噪声。     

Strong Convergence Rate of Parameter Estimation for a Class of Stochastic Systems

In this paper we obtain the convergence rate of strongly consistent estimate for coefficients of closed-loop ARMAX system driven by iid random sequence, after adaptively stabilizing the system without introducing external excitation signal. The system is allowed to be unstable and of nonminimum-phase.     

非线性随机延迟微分方程Euler-Maruyama方法的收敛性

首先利用附近已有节点上的值通过插值对延迟项进行数值逼近,这是一种崭新的尝试;然后针对较一般情形下的一类非线性随机延迟微分方程初值问题,得到了带线性插值的Euler-Maruyama方法在均方意义下是收敛的理论结果,它部分推广了已有文献中的相关结论。     

SIAR在强干扰背景下目标的检测与跟踪(一)

本文首先讨论稀布阵综合脉冲孔径雷达（ＳＩＡＲ）的抗干扰性能，表明该雷达在抗干扰方面手段丰富，抗干扰能力强。然后介绍自适应置零处理在ＳＩＡＲ中的应用。计算机模拟结果表明：ＳＩＡＲ可以在强干扰背景下对目标进行有效的检测。     

STRONG CONSISTENCY OF M ESTIMATOR IN LINEAR MODEL FOR NEGATIVELY ASSOCIATED SAMPLES

This paper discusses the strong consistency of M estimator of regression parameter in linear model for negatively associated samples. As a result, the author extends Theorem 1 and Theorem 2 of Shanchao YANG （2002） to the NA errors without necessarily imposing any extra condition.     

两相流重粒子运动的非线性系统方程组的计算

本文阐述两相流重粒子运动的非线性常微分方程组实际上代表一个系统的方程组,讨论了常用的解法如Runge—Kutta法等和它的结果。本文采取变步长用有限分析法把非线性项线性化,构造一个迭代序列,逐步迭代修正非线性项,求解一般形式的非线性系统方程;并验证迭代逼近解的收缩运算条件;给出计算重粒子运动轨迹和速度的算例,结果分析和说明应用的实例。     

Theoretical Computation of Nonlinear System Equations of Heavier Pellets Movements for Two Phase Flow

This paper presents nonlinear ordinary differential equations (ODES) of the heavier pellets movement for two phase flow, which actually represent a system of equations. The usual methods of solution such as Runge -Kutta method and it's datum results are discussed. This paper solves ODES of general form using variable mesh-length, linearizing the nonlinear terms by finite analysis method, fuilding an iteration sequence, and amending the nonlinear terms by iteration . The conditions of convergent operation of iteration solution is checked. The movement orbit and velocity of the pellets are calculated. Analysis of research results and it's application examples are illustrated.     

Self-configuring scheduling scheme for IPv6 traffic with multiple QoS classes

This paper proposes a new queuing model and adaptive scheduling scheme which realizes multi-class QoS mechanism under DiffServ architecture. The queuing model is composed of two parallel output subqueues, each output sub-queue adopts random drop algorithm by setting different buffer threshold for different class traffic, so it can provide multi-class QoS. The new proposed scheduling scheme which adaptively changes the parameter A can guarantee the performance target of high class traffic, in the mean time, improve the QoS of low classes traffic.     

SIAR在强干扰背景下目标的检测与跟踪(二)

本文在第一部分的基础上进一步介绍稀布阵综合脉冲孔径雷达（ＳＩＡＲ）在强干扰背景下对目标的距离、方位和仰角进行精确测量与跟踪的方法，通过计算机模拟证明了该方法的有效性。     

一种基于约束关联网络模型的模块化设计方法

针对侧重产品设计各阶段宏观布局原则制定、忽略布局合理性及其进化分析技术研究的现状,提出了一种基于细粒度约束关联网络模型的模块化设计方法.从布局规划及其协同进化的角度,给出了此方法的技术框架和闭环流程框架.研究了基于细粒度约束关联网络模型建立产品族模型的方法.探讨了基于细粒度、多视图产品族模型实现模块划分的分析技术和算法.研究了其设计过程调度方法,并提出了基于过程冲突定位和优化细粒度产品族模型的技术方法.通过在某型号发动机模块化设计中的应用,验证了所提出方法的合理性和有效性.     

基于强跟踪滤波器的再入飞行器制导律设计

研究了气动模型存在误差情况下高超声速再入机动飞行器的制导律设计问题。首先用强跟踪滤波器对气动参数进行估计,然后根据估计值与标称值的偏差对攻角和倾斜角进行修正,最后对原始非线性方程沿着标称轨道线性化得到线性偏差方程,并利用线性二次型最优调节器原理设计控制律。仿真结果表明所设计的制导律可以大幅度减小由于气动模型误差而引起的落点偏差。     

从强信号掩盖中检出弱信号的一种新检测算法

针对功率较强、带宽较宽调制信号掩盖下是否隐藏有功率较弱、带宽较窄调制信号的检测问题进行研究,提出了一种新检测算法。算法先根据调制信号的星座特性消除强信号的干扰,在此基础上分别从时域和频域角度提取了两个特征参数:K参数和H参数,结合两个参数的特点设计了检测算法。该算法能够实现具有一定能量和带宽弱信号的高效检测,并能对弱信号的个数进行估计。仿真结果表明,算法具有很高的正确检测概率。     

APPROXIMATION SCHEMES FOR SCHEDULING A BATCHING MACHINE WITH NONIDENTICAL JOB SIZE

In this paper we study the problem of scheduling a batching machine with nonidentical job sizes. The jobs arrive simultaneously and have unit processing time. The goal is to minimize the total completion times. Having shown that the problem is NP-hard, we put forward three approximation schemes with worst case ratio 4, 2, and 3/2, respectively.     

一类自适应松弛算法的算法模型

对于一类自适应松弛算法,本文提出了一个算法模型。在一些通常的假定下,证明了该模型生成的序列的收敛性定理。     

The Theory of Composite Characteristics Under Sampling Scheme Without Discontinuing Inspection

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强Rasmusen智猪公理系统的最可能局势

基于Rasmusen原始智猪博弈模型,由引进大小猪的跑速、吃速、投食量和槽板距等指标和即喷公理、弱和平公理、强成本公理、强跑速公理和吃速公理,建立了所谓强Rasmusen智猪公理系统。给出最优局势分布公式,得到当成本和槽板距充分小时,最可能两猪都踏;当成本足够大时,最可能大猪独踏的结论。作为应用,引进一种所谓Rasmusen技术创新模型,举例说明了计算这种模型中各局势的概率和如何控制此概率的问题。     

IMPULSIVE BOUNDARY VALUE PROBLEMS FOR STURM-LIOUVILLE TYPE DIFFERENTIAL INCLUSIONS

In this paper, the authors investigate the existence of solutions of impulsive boundary value problems for Sturm-Liouville type differential inclusions which admit non-convex-valued multifunctions on right hand side. Two results under weaker conditions are presented. The methods rely on a fixed point theorem for contraction multi-valued maps due to Covitz and Nadler and Schaefer＇s fixed point theorem combined with lower semi-continuous multi-valued operators with decomposable values.     

一种融合运动和立体的视差与运动估计算法

本文提出融合运动和立体的视差与运动估计算法。算法首先通过计算瞬时ＦＯＥ，实现对每个像素处位移的ＭＡＰ估计，计算关联置信度测量，然后利用位移估计从两图像序列之一计算相对深度图并导出能用于匹配两立体对图像序列的视差先验概率分布，使立体对的两图像序列匹配，确定３－Ｄ景物深度。算法可独立估计每个像素处的视差，不需关联的平滑假设。