子模型

An immune algorithm based on parthenogenetic operators is proposed for solving the model.

构造出一种基于单亲遗传算子的免疫算法用于求解此模型。

Moreover, combining with dynamic trajectory simulation of different kinds of aircraft with atmosphere perturbance models, a software package of radar signatures prediction and analysis is presented.

二、分析了活动部件周期调制特征产生机理和频谱结构特点，并通过建立通用仿真模型描述直升机旋翼，螺旋桨以及喷气引擎压缩叶片的动态电磁散射现象；针对活动部件周期调制，阐述了自相关特征提取和子波包特征空间变换的基本原理；并利用模糊模式比较完成基于空中目标活动部件周期调制特征的分类识别试验，给出识别结果。

In previous quark potential models, the s-channel OGEP is not included or considered phenomenologically.

在以往的夸克势模型中，一般不考虑夸克的湮灭道单胶子交换势，或者只是唯象地加以考虑。

In 1987, the notion of a splicing system was introduced by Tom Head in [3] as a mathematical model of restriction enzyme digestion and subsequence religation in the recombination of DNA molecules.

摘要1987年，Tom Head发表了一篇论文，引入拼接系统的概念作为限制酶与DNA作用、进行DNA重组的数学模型。更重要的是，他还证明正则语言中的一类——严格局部可测语言，与拼接语言的子类——持续拼接语言等价。

For the model with the recruitment part governed by Ricker\'s function, we analyze the stability of the positive equilibrium.

得到了疾病的基本再生数R_0，其计算过程比一般的微分方程模型更为复杂，这是因为此时无病空间上的吸引子可以是平衡点，也可以是周期解或者奇怪吸引子。

Ricker wavelet whose dominant frequency varies from 50 Hz to 300 Hz is chosen as the excited signal.

从大庆长垣南地区层状地质模型入手，选择Ricker子波为激发信号，主频从50-300Hz系列变化，根据各层的v0和β值计算地层的均方根速度，由均方根速度换算层速度。

In this dissertation,SAA was adopted to find the sub-band who contributes most to model.

3在小波包分解域中，不同的子频带对模型的贡献是不同的。

The paper sees Horton code as a primary characteristic value and generalizing condition of the river network, and selects, simplifies and generalizes river based on scale of before and after generalization,, The main contents of paper include:(1)Reviews generalization concept, arithmetic operators, methods, influence factor and frame of map generalization and design, analyze core theory of feature —oriented map generalization, discuss the main context and applicable method of river feature generalization(2) Summarizes natural form and spatial configuration characteristic of the river network, and describe the river network using digraph Paper mostly researches tree —like river, identifies the direction of river based on the angle of the main and secondary reach, and identifies the main river based on most length and predominant continuation of the flow direction along the major channel , then receives the grade of river by recursion and structuralize river network, builds hiberarchy rank system of river based on Horton coding(3)Designs the model of river network based on Horton code, and organizes the data of node, branch and river.

本论文把Horton编码作为水系网的一个主要特征值并以此作为综合条件，并根据综合前后的比例尺对水系网进行选取、化简和概括。论文的主要工作包括：(1)总结地图综合的概念、算子分解、实现方法、主要影响因素和总体设计框架，分析面向地理特征的制图综合的核心理论支撑，在此基础上讨论水系专题要素综合的主要内容和综合适用的方法。(2)总结水系网的自然形态和空间结构特征，用图论对水系网进行描述。以树状水系作为主要研究对象，依据树状水系的主支流交汇关系确定水系流向，依据水系中主流的长度最长和主流保持原有的流向趋势确定主流，按此递归得到河流的不同级别，对基于河段组织的水系网结构化，自动建立水系的Horton编码。(3)设计基于Horton码的水系网模型，对结点、河段、河流和河系的数据进行有效的组织。

This paper introduces the key technologies used in MP3, such as subband filter, psychoacoustical model and dynamic noise allocation.

对MP3所用到的几个关键技术，如子带滤波、心理声学模型、动态噪声分配等作出简明介绍。

A new PSPICE subcircuit model of power PIN diode is developed.

提出了一种PIN 二极管的PSPICE子电路模型。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。