一类排序程序之间关系

在对模糊量的排序方法中,有一类是建立模糊关系以实现模糊量的比较．目前在文献中已有几种不同的方法从一个模糊关系去导出全序．本文讨论了不同方法用于同一模糊关系,特别用于循环模糊关系导出的三种序关系之间的联系     

模糊AHP在神府东胜矿区开发方案决策中的应用

本文从实际应用角度出发,探讨了新开的矿区规划方案的决策问题。在三角模糊数的性质与运算规则的基础上,对AHP排序计算的根法进行了模糊扩展;从而导出了模糊AHP群体决策的模糊排序;对神府东胜矿区开发方案进行了决策排序,取得了比较满意的结果。     

基于交叉效率DEA和目标规划的直觉模糊偏好关系排序方法

针对直觉模糊偏好关系排序问题,提出一种基于交叉效率DEA和目标规划的直觉模糊偏好关系排序向量的计算方法;在定义直觉模糊偏好关系导出矩阵的基础上构建了仁慈型交叉效率DEA模型,给出了基于直觉模糊偏好关系方案交互评价的排序向量隶属度求解算法;进一步考虑隶属度和非隶属度的内在联系,构建了获取各方案非隶属度的目标规划模型;最后,通过算例分析说明该方法不需要进行一致性调整,决策信息的损失能够得到有效避免,具有较好的可信度和广泛的适用性.     

区间值模糊线性规划问题及其求解方法

指出了一类区间值模糊线性规划问题,讨论了区间值模糊数的排序方法,在不同的排序准则下获得了相应的辅助模型,给出了求解问题的算法。     

模糊管理决策模型及其应用

本文在普通决策中引进模糊思想，导出模糊决策的模型与方法，并给出应用实例。     

基于模糊积分多元决策模型的电源开发排序

在分析影响电源的开发排序各种因素的基础上,根据模糊积分的有关理论,对基于模糊测度的模糊积分加以改进,给出了基于多层模糊积分多元决策的电源开发排序模型,并归纳出用该模型进行电源开发决策与排序的一般步骤,研制了相应的计算程序,最后成功地应用该模型进行了四川省中型水电站群的开发排序.分析结果表明,在考虑系统容量电量平衡及电网水火电比重发展趋势的基础上,基于模糊积分多元决策模型电源的开发排序,可以全面合理地刻画系统中的各种定性与定量指标,按各中型电站的整体指标优劣进行取舍是合理的,同时应用该模型可以开展其它复杂系统的综合决策.     

模糊数证券组合投资选择模型与求解

针对预期收益率与风险损失率为模糊数时,建立了一种具有模糊系数的证券组合投资选择模型.利用一种对模糊数排序的方法,将模型转化为传统的线性规划问题求解.     

基于模糊数质心的一种新的模糊数排序方法

基于模糊数的质心,融合模糊极小集和模糊权重面积信息,构造了一种同时考虑模糊数本身、模糊数间相对关系及决策者态度影响的综合排序指标;研究了该排序指标具有的一些性质;证明了该排序指标满足模糊数序关系的性质.本文提出的排序方法,不仅能够在一定程度上克服已有方法的某些缺陷,并且可以有效的实现各种模糊数的排序,最后通过数值实验验证了方法的合理性,并通过与已有方法的比较体现出本文方法的优越性.     

一种用于模糊判断矩阵排序的χ~2方法

根据决策者给出关于决策方案的一类模糊判断矩阵,提出了一种方案排序的χ2方法·首先,给出了关于模糊判断矩阵及其完全一致性的概念;然后,建立了一个关于求解方案排序值的最优化模型,并讨论了求解优化模型的理论依据和算法,采用该方法可以直接得到每个方案的参考排序值,并使方案的排序结果最大程度地反映了决策者的偏好;最后给出了一个算例     

三角模糊数互补判断矩阵排序的最小二乘法

研究了三角模糊数互补判断矩阵的排序问题。根据三角模糊数互补判断矩阵加性一致性的概念,建立了一个基于最小二乘的非线性规划模型。通过求解该模型得到三角模糊数互补判断矩阵的排序向量,并利用三角模糊数期望值公式对决策方案进行排序。最后通过算例验证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).     

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.