模型

The paper uses duration technique to measure portfolio interest rate risks under liability-driven investment. We first introduce Lewin and Satchell equity duration model, and establish an simple equity duration model under free cash flow to equity.

本文首先回顾了 Lewin 和 Satchell 提出的股票久期模型，然后基于股权自由自由现金流模型建立了一个简化的股票久期模型，以这两个模型为依据，计算出我国上证50指数成分股的总体久期值分别为18和25。

Secondly, the paper puts forward a model to the structure of manufacturing strategy elements, which match manufacturing strategic elements and manufacturing executive elements can achieve competitive advantage. Then their components in this model have been analyzed, the factors which influence the structure of manufacturing strategy elements been discussed. After this, data for empirical research have been extracted and checked from database of IMSS, and examined their reliability and validity. It is satisfiable from the results of CFA for competitive priority.

其次，提出了制造战略要素之间关系结构模型，即制造的战略层次要素和执行层次要素之间的匹配以获得制造竞争优势，并分析了模型中制造的战略层次要素与执行层次要素的内容，讨论了影响制造战略要素关系模型结构的因素，并对模型实证所需的数据进行了考查和析取，对数据的信度和效度进行了分析，特别是从竞争优先权的验证性因子分析的结果来看是比较令人满意的。

In order to solve the repeat modeling in the process of the hull scantling rule check,finite element analysis and production design,the some key technology about the transfer of ship initial scantling model to finite element model is studied.

针对目前船体结构规范计算、有限元分析和生产建模过程中存在的重复建模的问题，研究了船舶初步结构设计模型向有限元模型转换中的几项关键技术，提出了模型转换的方法，开发了模型转换软件，并在16 500t液化气船上进行了局部应用，收到了一定的效果，值得进一步推广应用。

In the computer simulation aspect, following work has been down:At first, the Wolfgang Schreiner's model is employed and extended to a new computer arteriole optimal growing model. Many new algorithms are described, such as signal tracing, resistance calculating, resistance balancing and flow balancing. With these algorithms and methods, the arteriole networks can be grown successfully on microcomputer.Secondly, a growing-network ordering method, which is called auto-centripetal ordering method of the growing networks, can be employed to order the growing networks to calculate the average parameters of the networks in level series.

在计算机模型及仿真方面：首先本文改进、推广了WolfgangSchreiner模型，提出小动脉计算机优化生长模型，以及信号灯追踪、计算网络阻力、阻力平衡和流量平衡新算法，利用这种模型和算法成功地在微机上生长出了小动脉网络；第二，本文提出生长网络自动向心分级法，对生长网络进行了自动分级，并将网络参数的分级统计结果与A。

Recent research progresses of behavior and mechanism about edge chipping were summarized, and edge spalling model, edge chipping by single indenter and edge chipping by scratch test were introduced, all of the merits and defects of them were evaluated, some issues need to be solved for them and some methods to prevent it taking place were presented.

综述了工程陶瓷边缘碎裂行为与机理的最新研究进展，详细阐述了工程陶瓷的边缘碎裂剥落模型、边缘碎裂单晶压头模型和边缘碎裂划痕模型，并对各模型的优缺点作了评价，提出了工程陶瓷边缘碎裂行为与机理研究中尚待解决的问题以及边缘碎裂预防措施。

The motor's dynamic model, which is generally employed for speed control and parameter estimation applications, is improved for the purpose of improving the parameter estimation accuracy by the assumption that the stator self inductance Ls is identical to the rotor self inductance Lr. The motor's dynamic response to a direct on line start is used to estimate the parameters.

详细给出了遗传算法应用于动态数学模型参数识别问题的一般步骤，在Kron动态数学模型基础上，假定定子自电感Ls和转子自电感Lr相等，利用异步电动机直接空载起动的特性，对异步电动机动态数学模型和简化模型的参数进行了识别，给出了识别参数及有关结果。

Summary: PowerDesiger is " one station type " Modeling and solution designed, Offer ocular symbol for all kinds of data models say , is it manage and visit effective structure , project of information to offer to user, the integrated characteristic is flexible, is that the most popular software analyses the design tools at present, Its characteristic:(1)Modeling solution of complete integration of providing a whole set of for network analysis and designing for all IT users;(2)Modeling of the data;(3)The strong document blocks and customizes and produces the function automatically;(4)User totally self-defining yuans of mould plate;(5)Take result as the direction , regard data as the business treatment models of the centre;(6)Have offered it to all UML pictures and omni-directional support in all main platforms;(7)Have offered many kinds of modeling technology in the single environment based on resources bank;(8)Have offered the performance in common use for models and targets , expand attribute and script to deal with;(9)Incorporate the intact edition and control the function.

摘 要：PowerDesiger是"一站式"建模与设计的解决方案，为各类数据模型提供了直观的符号表示，向用户提供管理和访问项目信息的有效结构，集成特性灵活，是目前最为流行的软件分析设计工具之一，其特点：(1)为所有IT用户提供了一整套用于系统分析和设计的完全集成的建模解决方案；(2)数据建模；(3)强大的文挡定制自动生成功能；(4)用户可完全自定义的元模型板；(5)以结果为导向、以数据为中心的业务处理模型；(6)提供了对所有UML图及所有主要平台的全方位支持；(7)在基于资源库的单一环境中提供了多种建模技术；(8)为所有模型和对象提供了通用性能、扩展属性和脚本处理；(9)融入完整的版本控制功能。

Experimental studiesThis experiment adopts the chronic serum sickness MsPGN animal model improved and combine it with damp and hot model to establish experimentalrat foundation that contain deficiency of Yin and damp and hot . Compared the biochemisty and organizing such index as the shape , etc at the different stage of the model metioned above with those facts of MsPGN rat to find out the relationship between deficiency of Yin damp and hot and MsPGN on the development of illness and the role in MsPGN course, know the disease machine of MsPGN and treat MsPGN for Chinese medicine, screen the effective square medicine and establish the experiment foundation.

实验研究本实验采用改良的慢性血清病MsPGN动物模型，将其与具有一定实验研究基础的大鼠阴虚，湿热证模型有机结合起来，建立大鼠实验性MsPGN阴虚湿热蕴结证的病证结合模型，通过与单纯实验性大鼠MsPGN模型不同造模阶段的生化、组织形态等指标的比较，探讨阴虚湿热蕴结与MsPGN发病的关系及其在MsPGN发病过程中的作用，为中医认识MsPGN的病机及治疗MsPGN，筛选有效方药奠定理论基础。

This paper aims at the prominent issue that current models of spatial topological relations can not represent complex object, among which 9-Intersections Model (9IM) is well known. Therefore, taking cadastral data as example, one model of topological relations between complex and spatio-temporal objects based on 9IM is put forward. And the improved sweep-line algorithm is designed. Specific studies as follows:(1)According to the concepts of point set topology, the author distinguishes the complexity of the object, redefines the spatial point, line and region. For instance, in the simple region, concave one is more complex than convex, composite regions can be composed of many parts or with holes, and so on.

本文针对当前空间拓扑关系模型无法表达复杂对象的突出问题，以地籍对象为实例，以9I模型为基础，探索了一种适合复杂对象和时空对象的拓扑关系表达模型，较好地解决了地籍对象中各类要素间拓扑关系的描述和应用，实现了地籍变更中变化语义类型的推理和历史回溯；通过对现有的拓扑关系计算方法进行了改进，设计了相关算法，给出了C语言程序示例；最后通过实验系统的实现，验证了模型和算法的可行性。

Discussion topics include data analysis, probability concepts, point and interval estimation, statistical inference, hypothesis testing, simple regression model, inference in the simple regression model, general linear statistical model, dummy variables, collinearity, heteroscasticity, autocorrelation, error-related model, the Probit model, the Logit model and the Tobit model, simultaneous equations, and the time-series statistical model

讨论的主题包括实证资料的分析，机率，点估计与区间估计，统计推论，假设检定，简单回归分析，一般线性统计模型与推论，虚拟变数，共线性问题，异质变异数，自我相关， Probit模型， Logit与Tobit模型，联立方程式的估计与推论，时间数列统计模型。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。