查询词典 model theory

With the establishmentof the equivalent medium model, RTM-DRE was applied to study radiative transfer intransparent medium with scattering particles. By taking into account of absorption andscatter of particles, absorption of binder and reflection of interface, the apparent spectrumabsorption model of thermal control coatings was developed by RTM-DRE combined withMies theory. Validity, computational error and time of the model were validated andanalyzed. Furthermore, the apparent spectrum absorption characteristics of thermal controlcoatings were studied, and the influences of optical characteristics of binder and particles,volume fraction of particles, particles diameter, characteristics of interface, and incidentangle of irradiance were analyzed.

采用RTM-DRE研究热控涂层内辐射传递，结合Mie氏散射理论，考虑粒子吸收与散射、基料吸收、界面反射等因素影响，建立热控涂层表观光谱吸收率计算模型，验证计算模型的正确性，分析计算模型的计算误差与计算时间；在此基础上，通过计算热控涂层表观光谱吸收率来研究热控涂层表观光谱吸收特性，分析基料与粒子光学特性、粒子体积份额、粒径、界面反射特性、辐射能量入射角等因素的影响，初步研究空间环境因素对热控涂层表观光谱吸收特性的影响，采用系统灵敏度理论定量分析热控涂层表观光谱吸收特性变化对卫星温度的影响。

Aiming at forecasting the torpedo acoustic homing range for actual targets under real water conditions, this paper summarizes the typical water conditions in different sea spaces and seasons, presents a forecast method of torpedo acoustic homing range, and establishes a transmission loss forecast model based on the ray acoustic theory and a reverberation level forecast model based on the cell scattering model.

针对真实水文条件下鱼雷声自导对实际目标的作用距离预报问题，总结了不同海域、不同季节的典型水文条件，提出了鱼雷声自导作用距离预报方法，以射线声学理论为基础建立了传播损失预报模型，以单元散射模型为基础建立了混响级预报模型。

The main factors affecting the soil-structure interface behaviors were found experimentally and theoretically, including: 1 the thickness of the interface that is five to six times the average grain size of the soil; 2 the aeolotropy of interface, which is responsible for anisotropic response of the stress-strain response of the interface; 3 two physical states, including crashing and compression of the soil near the structure surface, which govern the stress-strain response of the interface strongly; 4 two shear deformation components due to sliding and constraint of the structure surface relative to the soil respectively, which forms the deformation of the interface; 5 the volumetric strain due to dilatancy, which is found to be composed of a reversible dilatancy component and an irreversible dilatancy component. 4. A unified constitutive model of the interface, based on new elasto-plasticity damage theory, was developed. It was confirmed to be effective for the conditions considering monotonic and cyclic shearing, coupling effect of shear and volumetric strains, evolution of physical state, micro-structure aeolotropy of the soil and the resulting aeolotropy of the interface as well as the three normal boundary conditions stated above. 5. 2D and 3D finite element formulations of the present model were derived and incorporated into the FEM codes. They were applied to the evaluation of practical engineering problems with different typical interfaces between soil and structure. The new model was shown to be reasonable and effective.

确定了粗粒土与结构接触面厚度约为5～6倍的平均粒径，首次揭示了接触面的细观结构异向性以及由此所引起的宏观剪切异向性，发现了在单调和往返剪切荷载作用下土颗粒破碎和剪切压密两种物态变化机制共同支配着接触面力学性质的变化，通过细观分析证实了接触面的变形可分解为一般同时发生的土与结构交界面上的滑移变形以及结构面位移约束范围之内土体本身的剪切变形两部分，观测到接触面受剪时表现出明显的相对法向位移，并可分解为可逆性和不可逆性两个分量；(4)建立了第一个能够统一地描述单调与往返剪切特性、剪应变与体应变耦合特性、细观结构和宏观剪切异向性以及土颗粒破碎等物态变化特性的土与结构接触面弹塑性损伤本构数学模型，并采用多种法向边界条件复杂加载路径的试验成果验证了新模型的合理性和有效性；(5)提出了新模型的二、三维有限元格式并结合实际边值问题进行了应用计算分析，比较了不同接触面本构模型对计算结果的影响，证实了新模型及其有限元格式不仅能够合理地描述土与结构接触面的主要力学特性，还能够较好地反映土体与结构物在接触面处的滑移、脱开等不连续现象。

The results of empirical research of the three models show: The listed companies with irregularity actions are arranged in the aftermost part on the basis of evaluating results in accord with facts; the evaluating results of coefficient of variation model and catastrophe theory model is high correlation and more exact than the results of KMV model; when choosing credit risk models, we should consider the differences between indexes' models and unindexes'models.

三个模型的实证分析表明：受违规处理的上市公司排名都靠后，评估结果符合实际情况；变异系数模型和突变级数模型结果高度相关，并且比KMV模型结果的准确性更高；在选择信用评估模型时，要考虑指标评估和非指标评估模型的差异。

We first state general linear model, ridge-type estimator and general ridge-type estimator, and the constraint biased estimator. And then, we introduce some basic theory about matrix and some conclusion about the admissibility of estimator in Gauss-Markov model. In the third chapter, we discussion several equivalent characterization of the best linear unbiased estimation, we proved that admissible characterization of admissible of linear estimation is as conditional general ridge-type estimation in general linear model. A necessary and sufficient condition that homogeneous linear estimator is admissible estimator is obtained.

本文首先概述了一般线性模型，岭估计及约束岭估计的发展历史和研究现状，在第二章介绍了矩阵的一些基本知识和可容许性的一些基本结论，第三章讨论了一般线性模型最佳线性无偏估计的几个等价条件，以及线性估计的可容许性特征，得到了一般线性模型的可容许线性估计均具有条件广义岭估计的形式，给出了一个齐次线性估计为可容许估计的充分必要条件。

Based on bond-slip theory, nonlinear contact theory and fluid-structure coupling theory, coupling three dimensional finite element model about plunge pool slabs, water, bedrock and anchor bar is established, limiting dynamic displacement considering phases of stability failure is studied in this paper, the response characteristic of dynamic displacement is analyzed in virtue of prototype observation results, and stability of plunge pool slabs are predicted.

基于粘结滑移、非线性接触及流固耦合理论，建立水垫塘底板、水体、基岩、锚固钢筋的耦合有限元模型，计算不同破坏状态下底板块的极限动位移，结合原型观测结果进行动位移响应特性的分析，从而对水垫塘底板的稳定性进行识别。

Firstly, it will consummate MDF fiber separation theory by using for reference of research progeny of paper making field and primarily set up math model of fiber particle's movement in refining plate and draw its movement tracks. At the same time, we use this theory to analysis and contrast four different dentations' refining plates and to validate rationality of this theory and to find the short of these refining plates.

首先，通过借鉴纸浆制备领域在此方面的研究成果，完善了MDF纤维分离理论，初步建立了纤维质点在磨盘间运动的数学模型，并做出其运动轨迹；同时，运用此理论对四种不同齿型的磨片进行了分析、对比，验证此理论的合理性并找出这四种磨片齿型的不足之处。

Finally, following the principle of constructing motivation mechanism, based on Maslow"s hierarchy of needs theory, Herzberg"s two-factor theory and Vroom"s expectancy theory, this thesis has presented countermeasure of building faculty motivation mechanism in non-governmental universities of Jiangxi province that includes setting up stimulant method choosing system based on the analytical investigation of the teachers" needs, building echelon formation plan system; perfecting the teachers recruitment and employment system, constructing the latest-model compensation and training mechanism and drawing up a long-term plan for teachers in Jiangxi non-governmental universities etc.

主要内容有：根据民办高校需求分析建立相对应的激励方法选择系统；建立梯队规划系统，完善我省的民办高校教师聘任制度，构建新型的民办高校薪酬及培训机制，实施民办高校教师职业生涯规划等。

Based on the faculty's incentive model (Figure 1-1), this research employs comprehensive expectation theory and fairness theory, together with efficiency theory, to better elucidate the relations between interchangeability of incentive methods and faculty's sense of fairness.

在高校教师激励模式（图1-1）的基础上，运用综合期望理论与公平理论研究的结果，并结合效用理论，能够更为清楚地说明激励方式的替代性与教师的奖酬公平感之间的关系。

Many musicologists and music educationists have contributed to the construction of Chinese basic music theory from different points and fields. This thesis adheres to principle of "combining history and discussion, history drawing conclusion", and concepts the ideal model of Chinese basic music theory through combing the development of basic music theory in China.

随着建国后音乐研究的深入，基本乐理的学科发展出现了繁盛的局面，音乐基础理论建设正向多元化、纵深化的方向迈进，许多音乐学家与音乐教育家纷纷从不同的学科角度与研究视野对中国音乐基础理论的建设做出贡献。

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