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。     

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。     

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.     

基于多Agent系统的电子商务模型

近年来，以Internet和WWW为开发平台的各种技术的迅猛发展，使得在Internet上进行信息传递和交换所具有的方便、快捷、廉价等优点应用于商业贸易成为可以预料的趋势．网络、分布式计算和数据库等技术的完善以及各项法规的健全，使得基于Internet的电子商务的兴起和推广成为可能．该文构造了一个应用于电子商务领域的多Agent系统模型——MAUSEM．模型中重点分析了基于多Agent系统的买方商务网站的结构．对模型中使用的Agent命名和定位方法、系统内Agent间和系统与其他系统间的通信模型、系统安全策略等进行了说明和分析．     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

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.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

A computer generator for randomly layered structures

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

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.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the