查询词典 model theory

This thesis is composed of following parts: the fundamental theory of the modern cryptology is briefly researched, in which the mathematic model of cryptology, data encrypt principle and Galois field theory related with elliptic curve crypto is discussed.

研究了现代密码学相关的基本理论，介绍了密码系统的数学模型、数据加密原理和与椭圆曲线加密密切相关的有限域理论； 2。

In the first part, first, the operational principle of Varivec Propeller is explained. Secondly, the mathematical model for predicting longitudinal and transverse movement hydrodynamic characteristics of Varivec Propeller under steady or unsteady condition are present, based on the general propeller lifting-surface theory, potential flow theory and Green theorem. Thirdly, theoretical calculation methods for predicting hydrodynamic characteristics when the influence of paraboloidal boss on the performance of Varivec Propeller is or isn't considered are present, based on The finite basic solution method, the unsteady vortex lattice method and Hess-Smith method Different rake angle is adopted according to different desire in practical application.

在理论计算部分，本文首先给出了全方向推进器的工作原理，然后基于常规螺旋桨升力面理论、势流理论和格林定理建立了定常和非定常状态下全方向推进器纵向、横向运动的水动力性能计算的数学模型，并利用有限基本解法、非定常涡格法和Hess-smith方法分别对考虑和不考虑桨毂影响时的全方向推进器纵向、横向运动水动力性能进行了数值预报。

Firstly, groupthink theory and its relevant research are reviewed and evaluated, and the background of theory development and the general groupthink model are introduced.

文章首先对群体思维研究的相关理论进行了回顾和评述，介绍了群体思维理论发展的一些背景，并给出了群体思维的一般理论分析模型。

All these are based on the analysis of using Hotelling spatial differentiation model and the equilibrium theory of the game theory, and on the assumption that there is no collusion and monopoly between sellers.

但是，对信息技术投资力度大并使消费者搜索成本降低得更多的销售商，则可扩大市场占有率和提高市场竞争力，因此销售商具有投资激励。

Second, according to property incentive theory and expectancy incentive theory,this thesis set up the model of compensation incentive for technologic staff.

第二，本文以产权激励理论和期望激励理论为依据，建立了科技人员薪酬激励模型。

Using the theories of probability, algebra, cryptography, Information theory and "Hybrid technique" and "Reduction theory" as tools, and basing on the notion of computational indistinguishability, properties and constructions of DES-model permutations are studied in this dissertation and some useful conclusions are given.

本文综合运用概率论、代数学、密码学、信息论等相关学科的知识及"混合技巧"和"归约论证"思想，以计算不可分辨性为基础，研究了DES型置换的性质和构造，得到较为实用的结果。

The result tells that at the beginning of English learning, semantic competence plays a major part in causing pragmatic failure while in the senior stage; social cognitive competence is the major cause. The thesis based on the research result establishes a semiotic Competence Cultivating Teaching Model in which markedness theory ,theory of interlanguage and interculture and content teaching approach are used to improve semiotic competence and reduce pragmatic failure.

研究结果也对语言学习者和教授者提出了一个新的问题，即在语言教学过程中，如何适当考虑语义能力，解释能力和社会认知能力三者的关系，构建一个教学模型，可以把这三者整体纳入语用能力培养的方案之中，笔者尝试性的提出一个解决方案，借用当前的词义习得标记性理论，过渡语与过渡文化理论和内容教学法理论，构建了一个符号能力发展模型，认为该模型将有利于学习者提高符号能力，进而减少语用失误。

This paper cited Gary Becker's behavior theory and Irvin Fisher's periods consuming theory as framework and established a model to describe rural household's produce decision for analysis of effect of quantity and quality of children to endowment.

本文以加里贝克尔的家庭经济行为理论和阿尔文费雪的时际选择消费理论为框架，建立了一个农户生育决策与消费模型，用于分析农户生育决策与人力资本投资行为如何通过子女的数量和质量影响养老福利，结果说明，已有的农村家庭养老模式已经改变，传统认为子女数目对养老的影响可能不再显著，尤其是对经济支持作用更多的由流动就业子女数目来体现，子女的质量对养老会产生显著的正向影响。

The development of fuzzy logic control theory made it possible to combine this theory with model predictive control. In this article, we apply fuzzy predictive control method into jigger discharging system.

模糊控制理论的发展使得其与预测控制的结合成为可能，本文将模糊预测控制方法应用于跳汰机排料系统。

By virtue of the assumption, in the framework of the classical scattering theory of the interaction between incident particles and a surface, a self-consistent local model for the interaction of atomic oxygen with surface materials on the spacecraft was developed based on the kinetic theory of molecular reaction.

该模型根据入射粒子轰击材料表面的响应强度，将相互作用区域分解为强干扰、边缘及弱干扰等三个区域，分别建立了相应区域的动力学模型方程。为了量化边缘区域粒子的耗散效应，本论文引入估算材料的Debye温度的Lindemann定律，并结合热容理论的Debye模型给出边缘区域分子间阻尼运动的摩擦系数。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。