基于Web服务和多Agent的敏捷供应链系统模型研究

本文基于Web服务技术与Agent技术对敏捷供应链系统模型进行研究.首先分析了基于多Agent的供应链系统,指出传统分布计算技术在实现供应链成员Agent跨Internet集成和协作时的不足.然后分析了基于Web服务的供应链系统,指出其在处理供应链成员自主决策、动态联盟等问题中的缺点.在此基础上,将多Agent技术与Web服务技术相结合用于处理供应链问题,提出了基于Web服务和多Agent的敏捷供应链系统模型,很好的解决了上述两种供应链系统存在的问题.     

基于移动Agent的分布式网络并行计算方法

介绍移动Agent和基于移动Agent并行计算的基本思想和一个实际的移动Agent支持系统——Aglet系统的基本原理。在此基础上，以一个并行求和程序为例，介绍基于移动Agent的并行计算的具体实现方法，为移动Agent的实际应用提供参考。     

基于移动Agent的矩阵并行计算的研究

移动Agent正在引起人们越来越多的关注。移动Agent的研究侧重于网络通讯、计算以及对网络资源的利用。网络上的节点计算机可以将自己的任务以移动Agent的形式分发到其它的节点计算机上运行,有利于实现高性能并行与分布式计算。本文将具体实现基于移动Agent的矩阵并行计算。     

基于多Agent的设备动态智能预测决策研究

通过对网络模式下设备管理特点的分析,阐明了Agent的基本特征和多Agent系统的体系结构.结合多 Agent 系统技术理论,提出一个基于 Internet 的多 Agent 设备动态智能预测决策支持系统的实现模式与方法.     

移动Agent体系结构的分析与设计

移动Agent应用程序的开发需要合适的模型和基础 介绍了一种进行移动Agent应用程序的体系结构方法 基于模型化Internet作为一个多样性的局部的有效体系结构环境,重点讨论了框架中的Agent通用结构,实现了Internet应用程序的可重用、可重构和可扩充     

Internet上基于多Agent的智能学习过程研究

随着Internet技术和现代远程教育的飞速发展，基于Internet的远程教学已经成为了现代远程教育研究的热点，但是，目前大多数的远程教学系统仍然是沿用传统的学习方式，其整个学习过程缺乏智能性和协同性，文章将计算机人工智能中的Agent技术引入到远程教学环境的研究中来，并重点分析和研究了Internet上基于多Agent的智能学习的过程。     

Internet数据挖掘原理及实现

分析了Internet数据挖掘的特点、目标及其原理,重点探讨了文本知识挖掘及其CVSM模型、搜索 引擎数据挖掘及其OEM模型及基于Internet的多软件机器人体系结构和基于Agent的个性化检索,最后 指出了Internet数据挖掘的发展方向。     

基于Agent的WAP网关翻译系统

根据手机、移动互联网和Internet的特点,提出了一个基于Agent的WAP网关翻译系统,并对该系统的结构和性能进行了详细的分析.     

一种基于移动Agent调度的均衡策略的设计与实现

提出了一种基于移动Agent调度的均衡算法SBOMA.该算法有效地解决了目前算法中只考虑整个系统CPU的利用率问题,未考虑同一任务中各个子任务间的同步关系这一关键问题.通过实验验证,该算法具有很好的可扩展性,提高了并行计算效率.     

基于Agent的网络与远程教学系统研究综述

Agent是人工智能和计算机软件领域的一种新兴的技术,尤其在网络中的应用有很大的优越性。文章首先分析了现阶段基于Internet的网络教学与远程教学系统的研究成果,以及智能软件Agent的特点,主要讨论如何把Agent技术应用于网上教学与现代远程教育系统中,并试图构建了一个基于Agent技术的智能化网络与远程教育系统。     

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.