查询词典 continuous dynamical system

It tells particularly the debris flow"s the encironment and the development characteristic by numbers . And according to its character , selecting the latest research results at present , the anthor calculates the debris flow"s the moving , dynamical characteristics and the scale , such as , the velocity of flow , the wallop , the peak value flux , and the total flux . And the anthor calculates density in different design frequency by the empirical formula method . In the text, the author uses the modle of evaluating a single gully to evaluate the risk of the debris flow . First , the author calculates the hazard degree in different design frequency , and forecasts the risk range of debris flow in Shenjia gully based on the maximum pile thickness and the total solid amount of a denbris flow . Then , on the basis of the risk range in different design frequency , the author carries out the damageability and risk assessment . The basic purpose of risk management is reducing risk or transferring risk , reducing the loss of life and property . The text constructs the system of risk management of debris flow in Shenjia gully , basis on the condition of Shenjia gully .

本文从地形地貌、地层岩性、地质构造、气象水文等方面系统地阐述了深家沟泥石流的发育环境及发育特征；分别从形成区、流通区、堆积区对深家沟流域特征进行描述；依据泥石流沟自身特点，选用现阶段最新的研究成果，推算了不同设计频率下的深家沟泥石流流速、峰值流量、总流量、冲击力等动力特征和规模数据；并且根据经验公式法来确定深家沟不同设计频率下的泥石流容重；本文采用单沟泥石流风险评价模型对深家沟泥石流进行风险评价，首先对不同的设计频率下的深家沟泥石流进行危险度评价，根据最大堆积厚度与一次泥石流冲出量来预测不同频率下的泥石流危险范围，然后，根据预测的评估范围，评价对应范围内的易损度，最后作出风险评价；城镇泥石流风险管理的根本目的是降低风险或转移风险，减少生命财产的损失，本论文根据泸定深家沟泥石流的具体情况，构建了深家沟泥石流风险管理体系。

Based on the stability theory of dynamical system, numerical computation of bifurcation diagram and the largest Lyapunov exponent of the linearized systems, the synchronization dynamics of coupled fast spike neurons with excitory chemical synapse was studied.

基于动力系统的稳定性理论、数值计算分岔图和线性化系统的最大Lyapunov指数，研究了经兴奋性化学耦合的快峰神经元的同步动力学。

An efficient and dynamical communication system can provide convenient communication services freely and highly invulnerably.

这种网络无需依赖任何基础设施，移动节点可以通过自组织的方式建立动态、高效、抗毁性高的通信系统。

The mathematical models of screed unit as well as hydraulic system parts are systematically answered, including the calculation of kinetical model based on hypothesis factors and dynamical model in consideration of forces acting on the screed.

在分析液压部件环节数学模型的基础上，首次系统地推导了熨平机构环节的运动学模型和动力学模型，并对系统的数值计算结果和实验结果作了对比分析。

At the same time,dynamical characters of stronglynonlinear system under nonresonant and resonant conditions is analyzed in de-tail,the frequency-response curves and stable ranges are drawn,and validity ofthis method is proved through comparison with the well-known results.

同时，详细分析了非共振和共振情况下强非线性系统的动力学性态，给出了各种不同情况下的频率响应曲线及周期解的稳定区域，并通过与现有的众所周知的结果的比较，表明了映射迭代法的正确性及实用性。

In the approach, the synchronization of the chaotic signals between the transmitter and receiver does not rely on the chaotic self-synchronization method proposed by Pecora and Carroll. The chaotic carrier is retrieved by using a non-dynamical system at the receiver which has the same nonlinear function form as what is adopted at the transmitter.

本方法中，收、发两端混沌信号的同步不是依赖于Pecora和Carroll提出的混沌自同步方法，而是在接收端采用一个与发送端具有相同非线性函数形式的非动力学系统从接收信号中提取混沌载波。

In the context of a traffic flow system based on an O-D network, the variation of nonlinear dynamical behaviors and complexity of motion under the variation of uncongested traffic cost and capacity of the roads are discussed through bifurcation diagram and phase plot.

以交通流O-D网络系统为背景，通过分岔图和相图讨论了在无交通阻塞下的交通费用和交通容量变化下系统非线性动力学行为的变化和运动复杂性。

This paper addresses an essentiality and study methods about the system and gives out the results of calculation and design for the circuit at first,and then presents an electro-dynamical model to calculates key parameters and protracts thei.

电脉冲除冰系统是上世纪80年代以来新兴的飞机用电动-机械式除冰技术，国内关于该方面的研究起步较晚，文中在阐述了电脉冲除冰研究重要性和研究方法后，首先对电容充放电电路进行了分析与设计计算，接着给出电动力学模型，并计算了系统中感兴趣的关键参数，对计算结果进行处理后得到了能够指导设计的重要参数间的关系图，结合工程实例给予了分析与评价，提出了下一步研究解决的问题。

On the condition of opening, target factor, dynamical factor and control factor contacts one another, reciprocates and restricts one another during the whole progress of the system.

在电子政务系统开放状态下，目标、动力、控制等要素之间相互影响、相互作用，通过电子政务发展过程联系起来。

We study the dynamical behavior of the epidemiological model with pathogen mutation on small-world networks, and discuss the influence of the immunity duration $\tau_{R}$, the cross-immunity threshold $h_{thr}$, and system size $N$ on epidemic dynamics.

我们研究了一种病毒变异传播模型在小世界网络中的动态行为，讨论了免疫时间$\tau_{R}$，交叉免疫阈值$h_{thr}$和系统大小$N$对传播动力学的影响。

I had a lovely dog named PiPi, he was one of my best friends.

我曾经有过一只小狗，它的名字叫皮皮，它很善良，它是我最忠实的朋友。

Newly ovulated mouse oocytes were cultured in the CZB medium supplemented with different concentrations of pyruvate before treated for activation or assayed for MPF activity.

我们猜测卵母细胞在不含丙酮酸的条件下老化的更快，并且卵丘细胞可能通过消耗不含葡萄糖的CZB中的丙酮酸从而促进卵母细胞老化。