基于数据挖掘的煤炭企业ERP理论及应用研究

阐述了探索适合煤炭企业的ERP管理模式与管理方法及应用ERP系统的技术途径.采用基于J2EE及OOP方法搭建基于数据挖掘的煤炭企业ERP系统的数据仓库体系结构,研究煤炭企业ERP决策支持系统建模技术、实现技术、系统实施等;通过对煤炭企业各种数据深入分析,探索数据仓库和数据挖掘技术在ERP系统中的应用模式,从而提高煤炭企业ERP系统的决策功能,真正做到用数据挖掘等信息技术改造传统的煤炭企业,优化企业资源,提高决策分析水平,增强综合竞争能力,为企业带来显著的经济效益和社会效益.     

基于数据仓库的流程工业ERP集成化框架

将数据仓库和数据挖掘技术应用于流程工业ERP个，提出了基于数据仓库的流程工业ERP集成化框架结构，解决了流程工业ERP个大量数据的存储、管理、分析、利用等一系列急待解决的本题，从而提高了流程工业ERP的决策支持功能。     

ERP环境下数据仓库的应用研究

针对ERP决策能力的不足,把数据仓库和数据挖掘技术应用到当中去,提出了ERP环境下数据仓库的体系结构,并对实施要点进行了阐述。     

基于数据挖掘的白酒企业决策支持系统研究

以数据仓库,联机分析处理(OLAP)和数据挖掘技术构建白酒企业决策支持系统.系统通过数据仓库对来自不同数据源、历史的数据进行存储;采用联机分析处理技术对数据仓库中的数据进行多角度、多层次等分析;通过数据挖掘,从数据仓库中识别和提取隐含的知识,为企业决策人员提供强有力的决策辅助支持.     

企业资源计划与数据仓库

传统的ERP系统属于典型的联机事务处理系统，它只是为企业决策层及员工提供了一个决策运行手段的管理平台，而不能直接提供满足决策所需的信息，即传统的ERP系统是很好的一个后台管理系统，而企业发展需要其同时具有前台管理功能，因而传统的ERP系统具有一定的局限性。而集成数据仓库的ERP系统则可以很好地实现这一功能转变，弥补传统ERP系统的局限性。与ERP系统以体系化结构方式集成的数据仓库能够在ERP系统运行过程中采集数据进行分析，并能将样本数据和分析结果存入数据仓库以便用户查询使用，帮助用户发现ERP系统积累的数据的潜在价值，进而帮助企业建立长久、广泛的竞争优势。     

电信决策支持系统中数据仓库的设计

基于数据仓库的决策支持系统是现今决策支持技术应用的主流,本文利用数据仓库、联机分析处理、数据挖掘、模型库系统、知识库系统等技术给出了电信企业的决策支持系统的逻辑架构和物理架构,并简单介绍了该系统中的几种数据挖掘方法。     

数据挖掘技术在ERP中的应用

数据挖掘是近几年迅速发展起来的技术,主要用于构建企业的决策支持系统。文章根据数据挖掘技术的特点,针对传统ERP系统在决策方面的不足,提出把数据挖掘应用到ERP中去,并结合A汽车公司的ERP系统的实施和运行情况,开展从该系统挖掘数据的可行性研究、数据方法和流程探索,给出决策树挖掘算法检测数据挖掘模型。结果表明,这种数据挖掘是有效的。     

数据挖掘技术在油田生产决策支持中的研究及应用

油田生产过程积累了大量的历史数据,从大量沉淀的数据环境中挖掘有用的决策信息,探索出油田生产中的规律性,能够更有效地指导生产,为石油企业提供生产决策支持。文中提出了基于油田生产数据采用数据抽取、转换和加载技术的数据仓库的构建策略以及基于多维数据集的数据挖掘的实施方案,并对包括数据仓库体系结构的设计、数据仓库的构建、多维数据集数据存储模式的优选策略、在线分析处理以及基于分层聚类分析的方法实现数据挖掘等在内的各主要环节进行了系统详细的阐述。最后结合油田生产数据,综合运用数据仓库、联机分析处理和数据挖掘技术构建了一套油田企业生产决策支持系统,并提取和挖掘出了对于油田生产决策支持有用的信息。     

数据挖掘技术及其在金融中的应用

数据挖掘是一门交叉性新学科，数据挖掘技术是目前国际上数据库、数据仓库和信息决策系统领域最前沿的研究方向之一。本文简述了数据挖掘定义和特点，介绍了其主要技术与基本步骤，并进一步分析了数据挖掘技术在金融中的应用。     

浅析企业数据仓库与联机分析处理及数据挖掘技术的应用

文章针对企业对信息系统数据挖掘的需求，提出了基于数据仓库，应用联机分析处理及数据挖掘技术的计算机辅助决策支持系统的模型，并对数据仓库、联机分析处理及数据挖掘技术的应用进行了分析。     

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.     

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.     

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.