基于模糊综合评判法的舞台设计决策分析

考虑升降舞台机构方案选择中蕴含的多种来源的不确定信息,提出了一种基于模糊综合评判法的设计方案评价模型,用于不确定系统的模糊推理和决策分析。通过构造相应的的方案集和评价指标体系,以及对定量指标和语言值变量的规范化处理,结合专家主观赋权,进行最优方案选择。既包含了评判对象的客观信息,又融合了决策者的主观信息,求解方法简单易行,具有一定的实用性。     

大行程升降舞台结构方案的二级模糊综合评判

提出了一种对大行程升降舞台进行结构方案选择的模糊综合评判法 .该方法在对不同结构形式进行全面性能分析的基础上 ,以模糊变量的定量描述为手段 ,将综合性能的优劣用量化指标反映出来 ,从而可以从众多的可行方案中选出最佳方案 .这种方法也为舞台机械和其它产品的选型提供了依据     

考虑模糊区间的水库群优化调度决策方法

为有效解决多目标决策中存在的不确定性问题,提出考虑主客观因素模糊区间的综合赋权方法。首先利用模糊层次分析法确定反映决策者主观偏好的主观权重,其次引入区间数的相离度概念提取客观决策信息,最后利用基于博弈论的综合赋权方法确定综合权重,并根据综合权重选出最佳调度方案。该方法在金沙江下游梯级水库群多目标优化调度中的应用结果表明:综合的赋权法在多目标调度方案优选中具有可行性,综合权重选出的调度方案能同时体现决策者偏好和各指标客观特征,所选方案在各指标上表现均衡,为流域水资源多目标综合调度决策提供了新的思路。     

地下结构抗浮方案评价指标体系的建立

通过对地下结构工程抗浮设计应用现状的分析,提出地下结构抗浮设计方案选择原则.在系统分析设计目标和影响因素的基础上,建立了地下结构抗浮设计方案优选的多级综合评价指标体系.应用模糊数学原理和方法分别对评价指标体系的各指标进行处理,建立了方案优选的多级模糊综合评价决策模型.通过工程实践中抗浮设计方案优选实例,阐述了方案优选的多级模糊综合评价的工程应用.     

环境质量模糊综合评价指标的赋权方案研究

环境质量模糊综合评价作为一种应用较为广泛且具有完整数理基础理论的环境质量评价方法,在使用过程中经常涉及到各评价指标的赋权问题。由于不同的评价指标赋权方案,直接影响环境质量综合评价的结果,因此研究各评价指标的赋权方案特别重要。赋权方案取决于各评价指标在整个环境系统中的环境污染贡献量,在分析、比较不同赋权方案的基础上,提出了一种正S线型的赋权方案。通过理论分析该改进的赋权方案既体现了环境质量评价的赋权原则,又体现了人们在主观上对各评价指标的不同重视程度,符合环境质量评价的目的和要求。通过举例验证了该赋权方案的科学性与合理性。     

基于Pareto最优的概念结构方案多目标决策方法

介绍了一种由概念设计结构方案选择的多目标决策方法．该方法根据多目标Pareto最优原理，将sPareto边界定义为一种设计方案集的Pareto边界，直接反映了各方案间的折衷，从而可剔除支配方案，保留竞争方案，并利用最小sPareto解集量化竞争方案性能，实现了方案的定量评价．在此基础上，通过设定不同的偏好区域，以交互方式研究设计解空间，从而可辅助设计者做出满意的方案决策．     

PPP模式下公共工程项目合作伙伴优选决策研究

PPP模式下公共工程项目的合作伙伴优选过程中,决策指标信息的模糊性和不确定性使得决策过程存在偏差,进而导致最终决策结果不够合理。针对此问题,建立了基于灰色模糊评价和TOPSIS法的PPP项目合作伙伴优选决策模型。该模型首先通过灰色模糊评价法确定指标评价值并消除因素制约和指标模糊性,采用AHP和熵权法相结合的组合赋权法分别对一级指标和二级指标进行赋权,而后通过TOPSIS法计算评价对象与理想化目标的贴近程度并据此对备选对象进行排序,最终选择出最佳的合作伙伴。实例应用表明,该决策模型能够有效解决以上问题,具有一定的可靠性和实用性。     

机械设计中模糊因素的决策与评价

文章运用模糊相关原理和贴近度原则，以齿轮传动设计中齿数模糊选择和减速器设计方案的模糊综合评判为例，阐明了机械设计中模糊因素的决策与评价方法。     

虚拟企业合作伙伴选择方法

为了使企业在评标决策中科学合理地选择合作伙伴，运用基于变权法多因素模糊综合评判的理论与方法，建立了一种基于合理算子的多因素模糊综合评价模型，对虚拟企业合作伙伴选择过程中的指标体系作了分析。以实例分析得出用变权法多因素模糊综合评判的方法进行评标决策，能够很好地处理类似模糊决策的问题，通过调整算子，可减少因各决策者对各项指标优越程度的评价范围过大给决策结果带来的风险，从而提高了决策的精确度，同时该方法对多层次多因素模糊问题也同样适用。     

基于直觉模糊积分的多属性决策方法

为了研究多属性决策问题中决策属性间存在的关联因素对决策方案的综合评价问题,引入模糊测度的概念,给出直觉模糊积分的定义,并讨论其性质。在此基础上,提出了一个基于直觉模糊积分的多属性群决策方法,并通过实例分析验证了该方法的可行性和有效性。     

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).     

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.     

Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices, an interest in LBS (Location Based Service) is arising. To provide location based service, tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then, store and manage have been studied. In this paper, we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques, we update the MODBMS when moving object arrived at a street intersection or a curved road which is represented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique, location data that are corresponding to the node in topology are stored, thus reduce the number of update and amount of data. Also in case predicting the location,because topology are used as well as existing location information, accuracy for prediction is increased than applying linear function or spline function.