查询词典 stochastic dependence

In this dissertation,a new mechanism of stochastic resonance in the excitablesystem is presented,and the relationship between the stochastic resonance inexcitable neurons and the dynamic bistability is reported for the first time.Thepresent study deals with the extension of the concept of stochastic resonance,which has been thoroughly examined in bistable and simple excitable system,to amore complex system.It may even open the door to a better understanding ofstochastic resonance in neural system since experimental evidence supports theextension of such bistability in vitro preparations.

本文提出了可兴奋性系统中一种新的随机共振机制，首次报道了可兴奋性神经元中随机共振和动态双稳态的关系，将以前的单纯讨论双稳系统或可兴奋系统中的随机共振推广到了可兴奋系统中有动态双稳态更复杂的情形，由于在神经元的实验中已有关于动态双稳态的报道，本文所提出的随机共振为理解神经元中随机共振的编码机制开启了新的途径。

It is found that under certain conditions stochastic bifurcation mostly occurs when a stochastic attractor collides with a stochastic saddle.

揭示了随机分岔的发生主要是由于系统的随机吸引子与系统的随机鞍碰撞产生的。

Besides, a method has been creatively proposed to process stratum rupture using cross-ring. Bridge-edge and stratum area decompounding method has been used to solve reverse fault issue, and the applying problem basing on state machine model has been resolved by using a function class mechanism. It supplies a new idea and new method for reservoir stochastic modeling. At the same time, the geology stochastic modeling theory system has been enriched and improved. It has important academic and practical meaning in deepening reservoir development geology stochastic modeling theory and increasing remaining oil research extent.

该软件创造性地提出用相交环线概念来处理地层撕裂；用桥边及地层面区域子分的概念来处理带有逆断层的地层撕裂；用功能类机制及相应的消息分发模型，来解决基于状态机模型的应用问题等理论，为储层随机建模研究提供了新思路和新方法，进一步丰富、完善了储层随机建模的理论体系，对深化油田开发地质随机建模理论及加大剩余油挖潜力度具有重要的理论意义和现实意义。

In view of great uncertainty factors in the effect of shrinkage and creep, stochastic finite element method is applied to structural analysis. It can calculate the coupled stochastic response of uncertainty factors through randomizing input variables representing the stastics stochastic factors.

4考虑到收缩徐变效应分析中大量不确定因素的存在，本文引入随机有限元理论，通过对这些随机因素进行统计分析并作为输入变量，有效地计算模拟了不确定因素的混合随机响应。

Strategy for designing optimal bounded control to minimize the response of quasi partially-integrable Hamiltonian systems with stochastic excitations is proposed based on the stochastic averaging method for quasi partially-integrable Hamiltonian systems and the stochastic dynamical programming principle.

本文提出了一种基于拟部分可积Hamilton系统随机平均法和随机动态规划原理的最优有界控制策略。

A stochastic model with initial stochastic conditions and stochastic coefficients for surge calculation was developed for the typical hydraulic system of a surge tank .

针对典型调压室水力系统，建立了具有随机初始条件和随机系数的涌波分析随机模型，从数学上严格证明了调压室涌波随机模型存在唯一的均方解，并进一步利用Liouville定理求解了其解过程的联合概率密度函数，最后给出了调压室涌波的均值解曲线

This paper firstly introduces the concept of least function dependence set and the minimal fixed point theory, and then analyzes the relation between closure of function dependence set and complete lattice, and puts forward analyzes a concrete solution of least function dependence with use of minimal fixed point theory.

本文尝试采用严密的逻辑方法，利用最小不动点理论去求解最小函数依赖集。1最小函数依赖集(1)函数依赖一个数据依赖是关于关系数据库中关系的属性值之间的相关关系的一个命题，它规定了一个关系数据库的规范所满足的完整性约束条件。

The innovations of this paper are as follows:First, the paper has realized to study on the dependence relations between random variables based on copulas, an instrument which is used in this paper as an innovation, in terms of determining the nature and quantification, resorting to the descriptions of dependence properties and association strength and, by way of which, broke through the limitation of study with only depending on independence and linear dependence.

本文的创新点集中体现在三个方面：首先，以Copula为基础，通过对股票市场间的相关关系的强弱描述，从定性和定量两方面来实现对尾部相关性的研究，从而突(来源：7b9bA2bBC论文网www.abclunwen.com)破了目前依赖于独立和线性相关，这仅有的两类相依关系的局限。

And the exothermic covering flux addition amount dependence of riser diameters, the equivalent modulus dependence of riser diameters and the casting weight dependence of riser diameters have been obtained.

研究得出了发热覆盖剂加入量与保温冒口直径的关系，保温冒口的等效模数，以及根据铸件质量选择冒口直径的图表。

In about a century' s time, their livelihood of swidden agriculture has been changing greatly along with the natural and social environment change. Before 1950s, as a minor group frequently move in the subtropical mountainous area characterized by scarce arable land, high forest coverage rate and sparse population, Kemu people has long been engaged in swidden agriculture which was simple, called for no sophisticated production tools and was suitable for frequent movement. At that time, they adapted to the environment change mainly by moving frequently from one place to another, and their livelihood was featured by complete dependence on environment, frequent movement and swiddening without continuous cultivation. From 1950s to early 1970s, their way of adaptation changed into migration within defined territory and shortterm fallow featured by complete dependence on environment, migration within limited area and short fallow. In early 1970s, they leaned from outside to cultivate irrigated fields and plant cash forest and their livelihood was featured by complete dependence on environment and agro-forestry.

近一个世纪以来，随着其所处自然环境和社会环境的变迁，其刀耕火种的生计方式在不断地变化：20世纪50年代以前，作为频繁迁徙于山多地少、森林覆盖率高、人烟稀少的热带、亚热带山区的弱小族群，以开发容易，便于流动作业不需要复杂生产设施的刀耕火种为其传统的生计方式，主要以迁徙的方式对环境变迁进行调适，其刀耕火种生计方式的特征表现为完全依赖型、随意迁徙型、无轮作型；20世纪50年代至70年代，其主要以固定区域内迁徙和短期轮作的方式对环境变迁进行调适，其刀耕火种生计方式的特征表现为完全依赖型、在固定区域迁徙型、短期轮作型刀耕火种；20世纪70年代初，其主要以外文化——开拓水田及人工造林的方式对环境变迁进行调适，其刀耕火种生计方式的特征表现为部分依赖型、粮林轮作型刀耕火种；20世纪80年代以后，其主要以发展橡胶种植业对环境变迁进行调适，其刀耕火种生计方式的特征表现为暂时依赖型刀耕火种。

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。