查询词典 model theory

On this basis, according to historical data, apply ANN and differential simulation method to get the quantitatively correlative relations between each production and its own influence factors, and introduce the new methods of prediction for dynamic indexes with gas-field development (The combinatorial prediction method based on fuzzy comprehensive evaluation, the method of ANN to select optimally combinatorial prediction models and the ANN prediction method based on genetic algorithm).(2) Base on mathematical programming, combine with quantitative economics and techno-economics, introduce economical indexes to establish production"s distribution optimal model, production"s constitution optimal model and measured production"s constitution optimal model, including multi-objective models and five-years models. Upon this, the optimal project for all gas field and each gas-collected factory can be got. Also, introduce the time value of capitals to improve on these models.(3) Base on the optimal solution theory and algorithm theory for the nonlinear programming problem, introduce the SUMT algorithm and genetic algorithm to study how to solve the models, and on the basis of normal genetic algorithm, make use of auto-adaptively modulating method to improve on normal genetic algorithm; Base on algorithm"s convergence theory and calculation"s complexity theory to analyze seriatim SUMT algorithm"s convergence and genetic algorithms convergence, and compare performance with each other.

在此基础上，利用神经网络方法和微分模拟方法根据历史数据得到各分项产量与其影响因素之间的定量关联关系，并引入气田开发动态指标新的预测方法(基于模糊综合评判的组合预测方法、神经网络优选组合预测模型预测方法以及基于遗传优化的神经网络预测方法)；(2)以数学规划为基础，结合数量经济学和技术经济学，引入经济指标建立产量分配优化模型、产量构成优化模型、措施产量构成优化模型、气田开发多目标规划模型以及五年规划模型，进而获得全气田及各采气厂的最优方案，并引入资金时间价值对五年规划模型进行改进；(3)以非线性规划问题的最优解及算法理论为基础，引入SUMT算法以及遗传算法对模型的求解进行研究，并在原有的遗传算法基础上，引入自适应调整方法对遗传算法进行改进；以算法的收敛性理论和计算复杂性理论为基础，逐一分析SUMT算法以及遗传算法的收敛性，并比较三种算法的优劣性。

Then, it studies the supply chain management system as a complex system to confirm the state existing during operating of the system. After that, it conducts a probability analysis on the state which the system located by applying supplement variable method, and establishes the model of distributed parameter system in a form of partial differential equations. Combining C0 ? semigroup theory in the functional analysis, it conducts a dynamic analysis on the established mathematical model. Using this method, it obtains the mathematical expression of the dynamic solution and the steady state solution, and proves the uniqueness, non-negativity and the asymptotic stability of the system solution. This dissertation applies the Matlab tool and uses two-step, three-step Simpson integral equation to imitate the condition of system solution. Then, it adds possible mode of failure and the optimization adjustment state to the system, based on which it has established the distributed parameter system model which is described by partial differential system of equations. Combining the functional analysis C0 ? semigroup theory, it studies the established mathematical model, and obtains the mathematical expression of the dynamic solution system and the steady state solution. It has proven the existing of uniqueness of the system solution, the asymptotic stability of system solution and the system solution. In addition, it has lying the theory rationale for further analysis and the research on the optimization of system.

本文首先简要综述了供应链理论、可靠性研究、鲁棒性研究以及供应链鲁棒性研究的现状；然后，将供应链系统作为一个复杂系统来分析，确定了系统运行过程中所经历的状态，通过引入补充变量的方法，建立了用偏微分方程组描述的分布参数系统模型，用泛函分析中的C_0 -半群理论得到了系统动态解和稳态解的数学表达式，证明了系统解存在的唯一性、非负性和指数阶渐近稳定性；并借助Matlab工具，利用二阶、三阶辛普森积分方程模拟系统解的性态，并给出系统动态解的仿真图；本文又对上述系统增加了系统可能失效状态和优化调整状态，并在此基础上建立了用偏微分方程组描述的分布参数系统模型，同样用泛函分析中的C_0 -半群理论对所建立的数学模型进行了研究，得到系统动态解和稳态解的数学表达式，证明了系统动态解存在的唯一性、非负性及渐近稳定性，为进一步分析和研究供应链优化奠定了理论基础。

Secondly, according to the theory of retrieving model using time series and the self-memorization principle, the grey self-memory model based on grey system theory and phase space self-memory model established using chaotic theory are put forward, and the two kinds of models are applied to the analogy and forecasting of hydrologic time series, and the application field of the self-memory model is further expanded from extent and profundity.

更进一步，根据时间序列反演建模基本理论和系统自记忆性基本原理，提出了基于灰色系统理论的灰色自记忆预报模型和基于混沌理论的相空间自记忆预报模型，并应用于水文时间序列的模拟与预测，从广度和深度上更加拓广了自记忆模型的应用范围。

The main viewpoints and model of developing countries MNEs include FDI development cycle put forward by Dunning, the theory of small scale technology put forward by Wells, the theory of localised technological change put forward by Lall, the theory of technological accumulation and industrial upgrade put forward by Tolentino, the model of dynamic comparative advantagr impelling put forward by Aggarwal and Agmon, the model of dynamic competition tactic in technological accumulation put forward by Xian guo-ming and Yang rui.

相对于发达国家工业化早期，发展中国家企业技术能力积累和企业家能力提高具有两方面的有利之处：一是使这种积累和提高由自发过程变为主动过程；二是可以通过政府政策支持对国外相关技术、知识和技能的引进，以及创造更多经济机会和对企业家职能的部分替代或支持，加快企业上述能力积累和提高的过程。

This thesis first explains the theory of reading, for example, the bottom-up model, the top-down model, the interactive model and the schema theory, later on the basis of Carrell's theory, illustrates the effects of background knowledge on the foreign language reading comprehension.

本文首先介绍了各种不同的阅读理论，如：&由上而下&模式、&由下而上&模式和&交互作用&模式以及图式理论，本文以卡罗尔的理论为主要理论根据来分析其在阅读理解中的作用。

Firstly, This text has described information fusion technology characteristic, form structure and concrete processing method, and application of information fusion in fault diagnosis proves the feasibility and validity from the angle of information theory. Based on this,it is combined the fault diagnosis of aeroengine with Information fusion, a method and model which the fault diagnosis of aeroengine information fusion is brought forward. a research which combined neural networks with D-S evidence is brought forward. Based on the analysis of single neural network characteristic, the model of roted neural network is put forward. With the simulation based on the example, we can know evidence theory fusion improved the fault diagnosis It is hard to give the basic probability function in the process of using the evidence theory, So the model based on network and D-S evidence is put forword.

本文首先论述了信息融合技术的特点、形式结构和具体的处理方法，并从信息论的角度论证了信息融合技术在故障诊断中的可行性和有效性；在此基础上，将航空发动机故障诊断与信息融合相结合，提出了一种基于信息融合技术的发动机故障诊断模型和方法，并在此基础上，提出和分析了基于人工神经网络和D-S证据理论的信息融合故障诊断，研究了神经网络的建模方法、组建原则和实现策略，并结合诊断实例进行了分析；提出了基于D-S证据理论的决策融合，阐述了D-S证据理论的方法，模型，并结合算例进行了分析。

According to the differential explanations on the incentives or decisions of labor migration,this paper categorizes the abroad literatures into three kinds: traditional theory of labor migration(includes Lewis Model,Ranis and Fei's Model,Todaro Model),human capital theory of labor migration,and new theory of labor migration.

依据分析问题的假设条件和对迁移决策的解释，可以把国外关于劳动力迁移的文献分为三类，即传统的劳动力迁移理论(包括刘易斯模型，拉尼斯-费景汉模型，托达罗模型)、人力资本劳动力迁移理论和新劳动力迁移理论。

This thesis is based on crane dynamic theory and finite element theory, and utilized software platform of ANSYS. It realizes model analysis and transient analysis of steel rope and bridge structure. The data and conclusion offered effective method to bridge crane design. The thesis mainly includes:According to crane dynamic theory, established relevant dynamic model, and analyzed the dynamic properties of the bridge structure of the bridge crane, including the natural frequency, the model shape and the dynamic stress. A way to analyse the dynamic response of the bridge structure of the bridge crane which takes into account the dynamic properties of the steel rope pulley block has been explored successfully.

本文基于有限元理论和起重机动力学理论，以有限元分析软件ANSYS为平台，实现了计算机对钢丝绳系统和桥架的模态分析和瞬态动力学分析，得到的分析数据和结论对桥式起重机动态设计提供了有效的手段，论文主要内容包括：根据起重机动力学理论，建立了相关动力学模型，并对桥架结构进行动态性能分析(包括固有频率、振型以及动应力)的分析，探索出一种考虑钢丝绳滑轮组的动态特性在内的桥式起重机桥架结构动态应力分析的方法。

First, according to knowledge and theory about information theory, control theory, safety system engineering and manpower resource, a safety management model adapt to local coal mines is given. And then several sub-module in the model are discussed, including safety target management and duty tracing system, three-class hidden trouble exclusion and closed-loop safety information management system, safety and technology management system, accident analysis and prediction, safety culture and management of person with ability,"double foundation" construction, emergency and succor system, and management system that serves for safety production. Particularly two sub-module—safety management model" running mode and "double foundation construction are emphatically discussed here.

论文首先根据信息论、控制论、安全系统工程以及人力资源管理等学：科的有关知识和理论，研究设计出符合地方煤矿实际情况的安全管理模式，然后对本模式包含的安全目标管理与责任追究体制、三级隐患排查和闭环式安全信息管理系统、安全与技术管理体系、事故分析与预测、安全文化与人才管理、&双基&建设、应急救援体系、服务于安全生产的管理制度等子模块展开论述，特别是对安全管理模式的运行方式和&双基&建设进行了重点论述。

On the basis of this, this article founded the system of signal control theory at Cross Roundabout. This theory system includes the roundabout capacity model, cycle length model, changed interval model, phase model and the range of applicability of this theory.

并在此基础上建立十字环形交叉口信号控制的理论体系，并建立和完善了十字环形交叉口环岛容量的模型、十字环形交叉口信号周期的模型、信号控制相位的确定方法、绿灯间隔时间的模型以及十字环形交叉口信号控制理论的适用范围。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失