模型理论

Based on mechanism and vehicle theories theoretical analysis is pursued and normal driving conditions are put forward. The relations are analyzed between load distribution and power consumption. Mechanical formula is proposed. Furthermore in this paper the theoretical model of the total power consumption is established, and the relations of the total minimized power consumption with the air-cushion pressure and the fan revolution are discussed. The optimum operation point is put forward. The dynamic digital simulation studies are carried out on the operating procedure of the half-track air-cushion vehicle on soft terrain. Mechanical parameters and soil mechanics characteristics affecting vehicle power consumption and riding performance are analyzed. At the same time according to the model formula, the automation control problem is discussed. It is a theoretical instruction for further automation control.

本文还从力学和车辆原理的角度进行了理论分析，推导了半履带式气垫车的需求功率及正常行驶条件，研究了气垫压力和功率消耗之间的关系，提出了力学模型公式；建立了半履带式气垫车总功率消耗的理论模型，研究了最小功率消耗时功率与垫压及表征气垫车行驶状态的各参数的关系，分析了相应的影响因素，并提出了最佳工作状态的定义；同时进行了半履带式气垫车在软地面的行驶过程的动态数字仿真试验研究工作，对影响车辆功率消耗和行驶平顺性的各力学参数和土壤参数进行了分析，得到了各运行状态参数的变化规律，验证了最佳工作状态和最佳垫压的理论，根据力学模型公式对进一步的自动控制问题进行了探讨，为系统的控制提供了理论指导。

The paper has offered an important way to explain Bertrand paradox, meanwhile, it has also done an useful attempt to merge the prospect theory of behavioral economics into the modern industrial organization theory and market price theory.

然后，将此模型与不确定性条件下Bertrand完全理性竞争模型（即Bertrand竞争期望理论模型）进行比较。本文在提供又一条解构Bertrand悖论的重要途径的同时，为行为经济学的预期理论融入现代产业组织理论和价格形成理论做出了积极有益的尝试。

As a consequence, based on the water system denseness method and the tectonic d...

论文在分析地应力及地应力场特征和规律基础上，论述了地应力场主要组成部分；较系统地阐述了粗集理论的主要内容，应用粗集理论计算各因素对地应力场的影响，并提出基于粗集理论计算权重的方法；解释了图像滤波使图像边界模糊的原因，提出基于粗集理论的图像滤波方法；研究TM图像各波段的信息特征、最佳波段组合及各波段赋色；剖析构造形迹在反推构造应力场中作用，建立断裂构造形成时的构造力学模型；利用遥感资料解译了与新构造应力场密切相关的水系，在GIS支持下，应用水系密集度方法和构造力学模型计算了新构造应力场的方向与大小；分析了地形起伏对重力场的影响，并建立了相应的数学模型；研究了地应力在矿山巷道及开采设计中的应用。

Based on modern option pricing theories,Black-Scholes and Merton option pricing model are used to study the pricing of the structured products,and its design,characteristics and risk are studied respectively.Based on Black-Scholes and Merton option pricing models,I also use the checking method to estimate the parameters of the model following real prices data,And calculate the theoretical price.Then,I compare the real and theoretical prices of the two pricing models.The results show that the effects of the Merton option pricing model are superior to the Black-Scholes option pricing model.Moreover,It shows that Hong Kong stock prices are also affected by the instant messages,and the jump phenomenon may exist in Hong Kong stock market.

本文以香港衍生品市场上三种主要结构性产品结构性票据、牛熊证和衍生权证为例，探讨了结构性产品的设计、特点、风险和定价，以现代期权定价理论为基础，以B-S和Merton两种期权定价为基础，根据市场价格经过校验得出模型隐含的参数，编程计算出两种定价模型下的理论价格，并将其实际价格和理论价格进行了比较，结果显示：Merton定价模型的效果要优于Black-scholes定价模型，说明香港市场的股票价格也可能受即时信息的影响，存在跳跃现象。

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。

Theoretical basis of thermodynamics on fluid phase balance is studied in this paper, and estimating rule of thermoelectrical equilibrium with interfacial phenomena is analyzed. Adsorption theoretical model is evaluated on the base of essential theory of adsorption.

本文研究了流体相平衡的热力学理论基础，并分析了存在界面现象时的热力学判据，研究了吸附的基本理论，选择了空穴溶液理论模型计算凝析气在多孔介质表面的吸附；应用晶格理论吸附模型计算凝析油在多孔介质表面的吸附；应用气相吸附数据计算二元液相吸附，作为应用晶格模型研究多元液相吸附的输入数据，并且首次考虑气液混合吸附，以凝析油的临界流动饱和度作为判断气液混合吸附还是单纯的液相吸附的条件。

The main contents of this paper is used in college to learn the theory of the mechanics, control theory, mechanical design and computer programming technology, and mechanical theory to simulation, including through the establishment of two parts, kinematics and dynamics of the theoretical models (including Straight leg with the knee model and the model), the use of simulation software to achieve the whole process of Walkabout sports simulation, and to study the mass center position, slope angle and other parameters of walking gait characteristics of the device, and to find the law of passive walking, in order to further less energy-consuming research to lay the foundation of the robot.

本文的主要内容就是运用在大学期间所学到的理论力学、控制理论、机械设计以及计算机编程技术，进行理论推导和力学仿真，通过建立包括运动学和动力学两部分的理论模型的（包括直腿模型和带膝关节模型），利用仿真软件实现行走器整个过程的运动仿真，并研究质心位置、斜面倾角等参数对行走器步态特征的影响，从而找出被动行走的规律，为进一步研究耗能少的机器人奠定基础。这一段翻译成英文拜托别用在线翻译那种很多都是错的

It is pointed out that the main tendency of this study is gradually turned from the traditional solution theory or semiempirical model to statistical mechanics theory , from primitive to nonprimitive electrolyte model, in o rder to estab lish the mo lecu lar thermodynam ic model at h igh level,which can predict them acroscopic thermodynamic properties of electrolyte solution system from the microscopic molecular and ionic parameters.

指出电解质溶液的研究已逐渐从经典的溶液理论和半经验模型转向用统计力学理论进行研究，从电解质的原始模型转向非原始模型。从分子和离子的微观参数出发建立高水平的热力学理论模型，以预测电解质溶液体系的宏观热力学性质，是发展的必然趋势。

The results show that: 1. In the selected four funds, the theoretical risk of three funds is less than that of the actual portfolio fund, and only one fund's risk is higher than that of the actual portfolio fund; 2. It's hard to determine which combination is better between the single exponential model and Markowits'model;.3. Allowing short-selling is better than disallowing short-selling and the optimal solution can not be found under the condition of disallowing short-selling.

结果发现：(1)4只基金中有3只基金的理论模型的风险小于基金实际组合的风险，1只基金的理论模型的风险大于基金实际组合的风险；(2)单指数模型组合与Markowitz模型组合熟优熟劣难以定论；(3)允许卖空组合优于非允许卖空组合，且非允许卖空使得理论模型有时找不到最优解。

The main contents are as follows:Firstly, starting with the general situation of soil erosion and the harms caused by it, the causes leading to the local soil erosion problem are analyzed comprehensively in the paper. And connecting with the measures taking place, sticking points towards the career of soil and water conservation are expatiated upon.Secondly, Back-Propagation Neural Network, One of Artificial Neural Network is used to set up a modal about the connection of the soil erosion modulus and seven factors impacts on it, such as, rainfall, rainfall largest intensity in 30 minutes, runoff coefficient, vegetation cover percent, rate of granule, rate of physical viscidity-clay, the rate of organic matter. Through the comparison with linear regression model, the second regression model, the Chinese Soil Loss Equation, it illustrated that BP Neural Network modal is more accurate than the other three modals in forecasting the mount of soil erosion, and the BP Neural Network will have some applicability in forecasting in soil erosion.

本文以霍山县作为皖西大别山区的典型区域，主要研究了以下内容：(1)从介绍霍山县土壤侵蚀状况以及所造成的危害入手，全面分析了导致当地土壤侵蚀发生的原因，并结合当地采取的水土保持相关措施，阐述了当地水土保持工作的症结所在；(2)结合上土市水土保持试验站多年实测资料和2005年实验资料，应用BP神经网络理论，建立了次降雨土壤侵蚀量与次降雨量、最大30min雨强、径流系数、植被覆盖度等因子之间关系的模型，并通过BP神经网络的预测模型与一次回归模型、二次回归模型、CSLE模型之间的对比分析，说明了建立的BP神经网络模型在土壤侵蚀预测可以取得较回归模型和CSLE模型更高的精度，也说明了BP神经网络理论在土壤侵蚀预报中具有一定的适用性。

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