QFD与FMEA相结合的需求重要度确定方法

质量功能展开(QFD)方法与故障模式及影响分析(FMEA)技术以不同的思维方式指导产品的质量设计.通过对QFD方法与FMEA技术优缺点的分析,将二者进行技术整合,借助于QFD分析判断,挑选出对产品的用户需求至关重要的质量特性,确定其重要程度;而通过与QFD技术结合,FMEA对选出的关键部件进行故障模式及影响分析,确定其潜在影响,鉴别设计上的薄弱环节,从而将FMEA中的信息透过基于故障模式的需求重要度直接地反馈至质量层中,获得了新的、更合理的用户需求重要度排序.具体实例详细验证了该整合框架模型的有效性和优越性,说明了两者的整合应用可以充分发挥各自的优点,弥补各自的不足.     

用决策树方法挖掘寿险数据中的投资风险规则

本文的目的是希望在保险公司寿险客户对产品的索赔记录上,通过数据挖掘的方法,发现影响客户索赔次数的主要因素。应用数据挖掘技术,通过对客户的数据进行抽取、清洗和预处理,生成数据挖掘库,并使用数据挖掘工具,利用决策树方法建立模型,并对所分析出的模型及结果进行了分析理解及验证,得出一些实用的控制寿险风险的规则。     

车辆保险中零索赔客户的随机风险分析——基于零膨胀泊松模型

对车辆保险中的零索赔客户进行了研究.在分析零膨胀泊松模型的结构及思想的基础上,结合现实数据,给出了零索赔客户中的优良客户、潜在风险客户及其比率.使用该方法对零索赔客户进行统计推断分析,为保险人正确掌握零索赔客户的随机风险信息提供一定的理论依据.     

基于区间值直觉模糊集的技术创新风险评价方法

降低企业技术创新风险是提高企业技术创新绩效的关键.首先以技术创新六阶段模型为基础,针对技术创新的全生命周期识别了18项潜在风险.之后基于区间值直觉模糊集构建了应用于企业技术创新风险评价的模糊失效模式与影响分析(failure mode and effect analysis,FMEA)方法.该方法利用区间值直觉模糊集来评价技术创新各潜在风险的严重度、发生度和检测度,通过基于逼近理想解排序法(technique for order preference by similarity to ideal solution,TOPSIS)的非线性规划模型获得风险优先级并进行排序,以此为依据确定潜在风险的优先处理次序.最后以D公司的座椅开发项目为例,验证了该模糊FMEA方法的可行性.     

基于失效模式与后果分析的混合燃料发动机风险分析

针对发动机在使用混合燃料过程中存在的潜在失效模式和故障风险,尝试以改进失效模式与后果分析(FMEA)模型展开风险分析.基于模糊集理论、灰色关联分析和决策试验与评价实验室方法构建改进FMEA模型,将专家定性评价转化为定量指标并进行风险优先值(RPN)、关联度和原因度的计算.将计算结果进行风险排序和比较,由此揭示了使用混合燃料的发动机的风险排序,进而对潜在的失效模式提出风险控制建议.     

产品配置设计评价模型研究

大规模定制的核心是产品配置设计．依据客户对产品的需求信息，产品配置设计的实例往往不惟一，需要对配置结果进行评价，以选出客户最满意的产品实例．为此，以递阶层次结构建立了产品配置设计的二级评价指标体系，采用层次分析法构建了产品配置设计评价的层次结构模型．对层次结构模型建立了判断矩阵和各层元素对目标层的总排序权重向量，进行了各层总排序的一致性检验．给出了产品配置设计评价的算法流程图，解决了构造判断矩阵的有关问题，并通过一个实例验证了该评价模型的合理性和可行性．     

考虑采购、供应和选址的网络供应链优化设计模型

以现实中分布式多工厂、多产品、多客户环境下企业或公司的供应链为模型,分析了综合采购、供应和销售三个环节,并包含选址问题的供应链网络结构,提出了基于该网络结构的多级控制（采购、供应和选址）模型.     

基于物元分析模型的工程索赔风险评估

分析了影响工程索赔的风险因素,构建了工程索赔风险因素指标体系,并将各指标分为目标层,上层和下层三个层次。在此基础上,利用物元分析理论建立了工程索赔风险评估模型,并对该模型进行了实例分析,得到了工程索赔风险因素指标的重要性排序。评估结果表明,该模型具有很强的可行性与实用性。     

基于数据包络的松拉刀机构故障模式风险分析

针对风险优先数分析法中各评价指标权重相同,且对相同风险优先数(RPN)无法进行风险排序的问题,将数据包络法和风险优先数分析法进行融合,对松拉刀机构的故障模式进行风险分析.该方法能够增加RPN分析的区别力,客观寻找故障模式排序方法,确定松拉刀机构各故障模式的风险等级,有利于设计人员优先处理最危险的故障,为实现功能部件可靠性分配以及提高松拉刀机构的可靠性提供依据.     

基于超文本问题描述的施工索赔辅助决策模型

以我国某大型施工企业的施工索赔管理为背景，在分析施工索赔特点、工作模式、超文本的构成方式及特点的基础上，提出了施工索赔决策的主题结构，并分析主题结构的作用；提出了基于超文本问题描述的施工索赔模型，描述了基于该模型的索赔智能信息网络的构造；最后提出了辅助施工索赔决策系统的结构以及实现技术．     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.