finite time造句
例句与造句
- Cramer - lundberg model is changed into the form : in chapter 2 , we will discuss two - sided bounds for the ruin probability ( u , c , t ) of the risk model in finite time [ 0 , t ] , where ( u , c , t ) is defined by we get an estimate : , when n > n where 0 < < 1
我们在该章中是在索赔额的分布是gerv族( generalizedextendedregularlyvarying )并带有安全负荷的条件下得到了一个关于中心化随机和s 、 ( ， )的大偏差的估计:对于任意固定的y > 0与6 > 0 ， / ， ， 。 - Secondly in this paper we discuss the common survival probability in finite time period under the generalized compound poisson risk model in which the premium income process is a poisson process and in case of gamma ' s claim amounts , then we get more satisfied expressions
其次，本文讨论了广义复合poisson风险模型在保单收入过程为poisson过程、个体索赔为伽玛分布情形下，讨论了更一般的有限时间内的生存概率问题，得到了较为满意的表达式。 - Time domain noise is simulated by the mathematical pseudo uniform or normal random variable and coupled to deterministic signals such as rectangular ( rect ) , triangular ( tria ) , unit step exponential ( uexp ) , even exponential ( eexp ) , or gaussian ( gauss ) pulse voltages in finite number of time samples in finite time period
用数学类真均匀或常态随机变数模拟时域杂讯，与定然时域讯号如，方形、三角、指数递减、或高斯等电压脉波在有限时域?围之有限个时域取样结合。 - First according to the fact that tangential components of the evolution do not affect the geometric shape of the evolving curves , we introduce the evolution equation of geometric quantities for the general planar curves . then we describe the work of gage - hamilton briefly . last we consider a special curvature flow of curve which evolves with speed function of the principal curvatures along the inner norm and show that convexity of the curve is kept and its length and area are contracted if the initial closed curve is smooth and convex . so the final shape of the curve will be a point in finite time
首先根据曲线在切向分量上发展是不影响曲线的发展形状，我们引入了曲线的一些几何变量的发展方程；其次我们简要地回顾gage - hamilton研究曲线发展的一般步骤；最后我们考虑沿曲线的内法线以曲率的函数为发展速度的一类特殊的曲线族，证明了在初始曲线为凸的闭平面简单曲线条件下，曲线将保持凸的，并且它的面积和周长将同时收缩，并在有限时间内成为一个点。 - Abstract : iterative learning control is an effective approach to the control of processes that are repetitive in nature . in this paper , an open - closed - loop pi - type iterative learning control scheme for the precise tracking control of a class of discrete nonlinear time - varying systems over a finite time interval is presented . the scheme updates control input with tracking errors of both current and last iterations simultaneously . sufficient and necessary conditions which guarantee the convergence of the scheme are given and then proved with inductive method . finally , the conditions are verified with simulation results
文摘:对于具有重复运动性质的对象，迭代学习控制是一种有效的控制方法.针对一类离散非线性时变系统在有限时域上的精确轨迹跟踪问题，提出了一种开闭环pi型迭代学习控制律.这种迭代律同时利用系统当前的跟踪误差和前次迭代控制的跟踪误差修正控制作用.给出了所提出的学习控制律收敛的充分必要条件，并采用归纳法进行了证明.最后用仿真结果对收敛条件进行了验证 - It's difficult to find finite time in a sentence. 用finite time造句挺难的
- The tree of this paper is as follows : in chapter 2 , we study the uniformly asymptotic stability of the trivial solutions of a class of linear and nonlinear difference - differential equations with finite time - dependent delays . then , we deal with the existence , the uniqueness and the stability of periodic solutions and almost periodic solutions when the systems are under periodic perturbations and almost periodic perturbations
本文内容具体安排如下：第二章，我们首先研究一类具有限变时滞的线性及非线性差分微分方程系统的零解的一致渐近稳定性，然后讨论在周期扰动和概周期扰动下，相应系统的周期解和概周期解的存在唯一性及稳定性。 - Performs the optimization with finite time thermodynamic analysis and obtains the allocation of heat exchanger area for double - stage coupling heat pump systems that maximize the objective function , and the analytical expressions about the optimal temperature of working fluids , the minimum total heat exchanger area and the minimum power input
摘要应用有限时间热力学理论对双级耦合热泵供暖系统换热器面积进行优化，得到了系统供热系数最优时的最佳传热面积分配，最佳工质工作温度、最小总传热面积以及最小输入功率的解析式。 - This thesis consists of three chapters , the first chapter is introduction , the second chapter consider the initial - boundary value problem for the nonlinear wave equation : in a bounded domain in chapter 2 , we investigates the problem with respectively . by the energy function and potential well method , we proof that the solution blow up in finite time under certain conditions
本论文的主要内容分为三章，第一章为引言，第二章研究了定义在有界区域r ~ n上的非线性波动方程的初边值问题：第二章中分别讨论f ( u )形式如和( u ~ 2 ) u ，文中运用能量方法和“ potentialwell ”方法，构造能量函数，给出了问题解爆破的充分条件。 - A new thermodynamics analysis of working process of diesel engine which is different with traditional one - finite time thermodynamics analysis model , is put forward in this paper . this model gives the consideration to thermal resistance loss between working substance and heat reservoirs , heat leak loss inner the system , and character of finite time of system
本文提出了一种不同于传统热力学分析方法? ?有限时间热力学分析模型，对柴油机工作过程进行了研究，该模型考虑了热源与工质传热存在的热阻、系统内部存在的热漏损失及系统的有限时间特性。 - Abstract : a new variable structure model reference adaptive control ( vs - mrac ) scheme is proposed in this paper . by transforming a relative degree one system into a first - order - like differential equation , it is shown that the spr ( strictly positive real ) assumption for reference model or its modified form ( if plant relative degree n * > 1 ) can be removed and the tracking error can converge to zero in finite time or a small residual set
文摘:提出了一种可具有非严格正实参考模型的变结构鲁棒自适应控制方案，可去除变结构模型参考自适应控制中普遍要求参考模型为严格正实或当相对阶大于1时参考模型经补偿后为严格正实的假设.在此基础上提出的变结构控制律可保证跟踪误差在相对阶为1时于有限时间内收敛到零，而当相对阶大于1时则可使跟踪误差收敛到一个残差集内 - This dissertation mainly investigates the properties of solutions of a class of quasi - linear wave equations with a viscosity , a nonlinear perturbation ( source term ) and a dissipative term ( damping term ) , which arises from the longitudinal motion of a visco - elastic material . it contains the problems of existence and uniqueness of solutions , global existence , asymptotic behaviour and finite time blow up , etc . this thesis consists of four parts
本论文主要研究来自于物体的波动等应用领域中的一类带有粘性项、非线性扰动项(源项)和耗散项(阻尼项)的拟线性波动方程解的定性性质，内容包括解的存在唯一性，解的整体存在性和渐进性态及解在有限时刻爆破等问题 - There are three sections in this paper . the first section : we consider the initial boundary value problem on half line and bounded interval , with kato ' s method for abstract quasi - linear evolution equations and a prior estimates of . solution , we get the existence of global smooth solution and the blow - up of solution in finite time under some conditions
第一部分：考虑了camassa ? holm方程在半无界和有界区域上的初边值问题，用kato关于拟线性演化方程的初值问题的理论及先验估计的方法，证明了整体解的存在性，及在一定条件下，解在有限时间内的blow ? up 。 - Firstly , based on the utilization of the first and second law of thermodynamics , the ideal combined camot cycle model is set up . secondly , aimed at the insufficient of the classical thermodynamics analysis method , the popular method - - finite time thermodynamics analysis is applied to set up the model of endo - reversible combined carnot cycle . finally , the optimization relationships between the specific heating load ( shl ) and operating parameters and between shl and cop are conducted according to the characteristics of the function and investment of aht
在首先利用热力学第一、二定律分析方法的基础上，建立了吸收式热变换器的理想联合卡诺循环模型，然后针对经典热力学分析方法的不足，利用了当前很流行的有限时间热力学分析手段，建立了aht系统内可逆联合卡诺模型，根据热变换器的功能、投资等方面的特点，导出了吸收式热变换器比供热率与操作参数、比供热率与热力学性能系数的优化体系。 - Chapter 3 consider the initial - boundary value problem utt - where q is a bounded demain in rn with smooth boundary 3q ; with m ( s ) is a nonnegative c1 - function for s > 0 satisfying with we show that under certain conditions the solution blow up in finite time . chapter 4 consider the initial - boundary value problem and < ? > 2 . we show the decay rate of the solutions of the equation
第三章我们考虑了定义在具有光滑边界的有界区域上的kirchhoff型方程初边值问题其中0 ， r ， p 1 ， q 1 ， 1 ；当s 0时， m ( s )是空间c ~ 1中的非负函数，且满足其中， 0 ， 2这章我们给出了上述方程解的有限时刻爆破条件。 - The first successful industrial application of absorption heat transformer ( aht ) has been put into practice in yanshan petrochemical corporation in china . on the background of this engineering , the thesis sets up the methods of absorber ' s enhanced heat and mass transfer , process simulation and finite time thermodynamics analysis . the main research work is followed as : 1
本论文以北京燕山石化公司上的国内第一套吸收式热变换器( aht )系统为工程背景和研究对象，建立了包括吸收器强化传热传质、过程模拟和有限时间热力学在内的分析手段，并在此基础上开发出了模拟优化软件ass ，最后利用工厂的实测数据对软件的计算结果进行了测试和对比，具体工作： 1