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On the basis of the data obtained from the cam-type plastometer, four prediction models including the BP, Elman, RBF and GRNN neural network prediction models were established, which corresponded to the relationship between the deformation stress of nickel-chrome steel with chemistry elements, temperature, strain rate and deformation strain of the steel respectively. A comparative analysis for the prediction accuracy of the four models was obtained.

以凸轮式高速形变试验机进行的热模拟压缩实验得到的实验数据为基础，建立了热轧铬镍钢的变形阻力与其化学成分、变形温度、变形速度及变形程度对应关系的BP、Elman、RBF和GRNN 4种神经网络预测模型；并对4种网络的训练过程和预测精度进行比较分析。

Topics may include review of classical time series models, forecasting, smoothing, regression methods, polynomial trend models, seasonal models, and forecast monitoring and intervention.

包括传统的时间序列模型，预测，平滑，回归方法，多项式趋势模型，季节模型，预测监控与干预。

Abstract］ objective: to observe the antibacterial, antivirus and antipyretic functions of yi-zhi-huang-hua-kang-gan granules. methods: bacterial infection mouse models were established by the peritoneal injection of staphylococcus aureus and viral pneumonia mouse models by nose drip of influenza virus; fever rabbit models were produced by vein injection of indotoxin.

采用小鼠腹腔注谢金黄色葡萄球菌的方法观察一枝黄花抗感颗粒的体内抗菌作用；采取流感病毒滴鼻致小鼠流感病毒性肺炎模型观察其对小鼠的抗病毒作用；采用家兔耳缘静脉注射内毒素致热的方法，观察其解热作用。

We revisted the process B→η＇K and got the same result as the previous literature that the experient data is 2-4 times larger than the theoretical calculation We calculated the matrix element of scalar and tensor operators, which can be applied in some models beyond Stand Models, such as Minimal Super-Symmetry Models.

我们还在BBNS因子化方案下计算了某些新的算符，例如标量算符，张量算符等的强子矩阵元，这一结果可以应用到标准模型扩展如最小超对称模型中，计算新物理的贡献。

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。

This thesis proposes two inventory mathematical models for the inventory systems. Two inventory models with logistic demand are presented. In all models, the shortages are allowed and the total amount of stockout during the stockout period is considered to be a mixture of backorders and lost sales.

本论文探讨二个模型，一为需求量服从罗吉斯分配的情况，每一模型均有数值范例，以说明演算法的执行程序，本研究的目的为提出一个以订购数量、请购点、设置成本、品质水准与前置时间为决策变数的存货模型。

METHODS: Five plaster supramaxillary abutment tooth models were scanned and reconstructed by 3D laser scanner. The 3D shape of the models was measured by Surfacer10.5 software and the plaster models were measured manually with vernier caliper. The data were statistically analyzed.

采用激光扫描仪对上颌1，2，3，5，6共5颗牙的基牙预备体石膏代型进行三维扫描，并用Surfacer软件测量相关指标，用游标卡尺在石膏代型上测量基牙预备体的各个相关指标，用三种不同的方法分析系统的可靠性、可重复性以及扫描精度。

Several mechanic calculation models are built: the horizontal and vertical vibration calculation models consisting the dynamical interaction between ground and structure using Wolf discrete model of toft soil; the horizontal and vertical vibration calculation models without considering the dynamical interaction between ground and structure; the simplified model of isolator table without rubber bearing.

分别建立了以下几种力学计算模型并编制计算程序进行时程分析：利用Wolf的地基土离散模型，建立了包含地基—结构动力相互作用的水平、竖向振动计算模型；不考虑地基—结构动力相互作用的水平、竖向振动计算模型；不考虑橡胶垫支座的减震台简化计算模型。

We study the relation between topological sigma models and generalized geometries. The existence conditions for the most general type of topological sigma models obtained from twisting the N=(2,2) supersymmetric sigma model are investigated, and are found to be related to twisted generalized Calabi-Yau structures. The properties of these topological sigma models are analyzed in detail. The observa....

六标准差从1987年在摩托罗拉公司推行至今，已近20个年头，从一开始制造面的改善，延伸到非制造性的企业流程当中，它不但有效地变化员工能力与态度，也为企业带来突破性的营运改善，全方位提升企业竞争力；但事实上，六标准差管理活动导入对企业是一大变革性的挑战，因为其中牵涉策略、组织。。。。

The aims of disaster study and risk study are tent to unanimousness, both will offer the theoretical basis for sustainable development models. Regional safety construction based on disaster study is converting into regional risk management system based on risk study. So the authors consider that sustainable development model is the regional development model under a certain risk level, and the risk level relies on the regional safety construction level that integrates the regional economic level and social cultural system. Strengthening subject construction of disaster and risk study in China, national laboratory construction, and organization and practice of key items are imperative. And we should put the study emphasis on the vulnerability assessment system and models, risk assessment system and models, disaster and risk management mode of typical region, disaster and risk emergency control scenario, disaster and risk regions.

灾害与风险研究的目标正在趋向一致，都集中在为可持续发展模式提供科学依据；基于灾害研究的区域安全建设正在向基于风险研究的区域风险管理体系转变，由此认为可持续发展模式就是接受一定风险水平条件下的区域发展模式，一定风险水平依赖于由区域经济水平与社会文化体系相关联的区域安全建设水平；加强我国灾害与风险科学研究的学科建设、国家实验室建设、重大项目的组织与实施已势在必行；重点开展灾害脆弱性评价体系与评价模型、风险评价体系与风险评价模型、典型区域灾害与风险管理范式、灾害与风险应急控制预案、灾害与风险区划等方面的研究。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。