An architecture for support of network operating system services

This paper argues that network architectures should be designed with the explicit purpose of creating a coherent network operating system (NOS). The resulting NOS must be capable of efficient implementation as the base (native) operating system on a given machine or machines, or of being layered on top of existing operating systems as a guest system.The goals and elements of a network architecture to support a NOS are outlined. This architecture consists of a NOS model and three layers of protocol: an interprocess communication (IPC) layer, with an end-end protocol and lower sub-layer protocols as needed to support reliable uninterpreted message communication; a service support layer (SSL), abstracting logical structures and needs common to most services, including naming, protection, request/reply structure, and data-type translation, error control; and a layer of standard services, (file, directory, terminal, process, clock, etc.).     

An intelligent agent-based architecture for strategic information system applications

Strategic information systems (SIS) focus on the use of information system (IS) and information technology (IT) in the strategic management process in business organizations. The emphasis is on the strategic view of IS and IT and their impact on organizational strategy. Increased competition and advances in information technologies push for considerable structural changes in SIS. Agents, as autonomous entities which either work on their own or cooperate with others, and agent architectures have enormous potentials to be applied in such critical systems. In this article, first we investigate the very fundamental concepts of strategic information systems and intelligent agent technology. Then, the discussion continues on the specification of the characteristics and implementation issues of a typical SIS. Afterwards, we make use of these concepts and integrate them into a state-of-the-art, intelligent architecture for strategic information systems, called intelligent agent-based SIS. This is a comprehensive framework for a SIS in IT era which may be put into practice by a team of professionals in the near future. The graphical representation of this model is intended to help the reader understand the concept much better. After explaining the suggested model in full details, we introduce some support agents and specify their corresponding roles in an intelligent agent-based SIS architecture. Discussions and concluding remarks regarding the proposed system are provided at the end of the paper.     

基于TOGAF的车载信息服务业信息化架构研究

通过对TOGAF架构方法的深入研究,提出一种基于TOGAF架构和SST方法的信息化规划方法,并将此方法应用到车载信息服务企业的信息化规划案例中,给出该企业信息系统总体架构。     

An architecture for IN-internet hybrid services

The scenario for telecom services is undergoing a rapid change. A new set of communication services is emerging: due to the explosion of the Internet and to the dramatic increase of mobile phone markets, more and more customers are requiring new Internet-based communication services. The ability to merge the ubiquitous telephone service (terminal and personal mobility) and the friendliness (easy-to-use, easy-to-customize) of the Internet is recognized as a major driver to promote new classes of services. Users want to access multiple services over heterogeneous networks and from heterogeneous terminals. The higher flexibility in service offers as well as the possibility of a rapid introduction of new services (typical of Internet & IT worlds) are key factors that give a high competitive advantage to service providers (SPs). This article describes a supporting distributed architecture in terms of functionality and components, which enables the integration of the IN architecture and the Internet. It also describes by means of a service example – the virtual presence (VP) – the main interactions among the components that form the architecture. The developed solutions prove that the use of distributed platforms, open APIs, and object-oriented techniques are enabling factors in achieving full interoperability between heterogeneous networks and terminals.     

模型驱动体系结构在信息系统中的应用研究

信息系统是收集、储存、加工、传递、维护和使用信息的重要工具，是相关活动的神经中枢。作为信息化建设的中心环节，信息系统的优劣至关重要。而现有信息系统普遍存在着系统需求分析不到位、可维护性、可扩展性及可重构性差的问题。论文在分析信息系统使用中存在的问题的基础上，提出了在信息系统开发过程中应用模型驱动体系结构的思想，并且详细地分析了模型驱动体系结构在信息系统开发和改造过程中的应用。     

An integrated information system for real estate agency-based on service-oriented architecture

To enhance the efficiency of surfing the Internet, an integrated platform for real estate agency-based on service-oriented architecture (SOA) is established. It employs the concept of search engine and loads the information provided previously by each real estate agency to this platform. Due to the different types of data structure from each real estate agency website, the standard format must be defined for integrating the information. In this paper, the standard is defined by XML and is used to integrate heterogeneous database. This standard format includes the data fields that are required by the agency websites. It is processed in the platform which is expandable by receiving information from other sources in the future. In consideration of the copyright regulation, the agents are allowed to login and to share specific information on this platform in order to increase the transaction rate. The system also includes a Google Map engine for GIS service that marks the spatial location as the users send the requests. It helps the users to find the demanded housing information and to retrieve the nearby geographic location in a very short time.     

An information architecture for risk assessment and management

As systems become more complex, project managers need a means of accessing risk management experience gained on other projects. To address this need, the authors developed RAMP (Risk Assessment and Management Program), a risk management information system that provides interactive support for identifying, analyzing and sharing risk mitigation experience     

Service-oriented architecture for a scientometric information system

Issues are discussed that relate to designing a state automated scientometric information system. A conceptual model is developed. The model, as well as its software analogues, is used to analyze the experience in the design of scientometric information systems in Russia and abroad. An original scheme is proposed for the implementation of the program architecture. The main feature of the scheme is the ability to collect all the necessary data and provide functionality to end users through the import and export of web services.     

开放性高校信息系统中Web Services的研究与应用

在分析了现存高校信息系统的应用现状和Web服务技术的基础上,针对现存主流的高校信息系统中存在的问题和Web服务的技术特点,提出了着重应用Web服务技术提升高校信息系统的对外服务的开放性的开发思路,使得企业等社会机构能更充分利用其科研资源.此外还对应用的具体开发平台.NET中相关技术进行了相应的分析.     

Rama: An architecture for Internet information filtering

This paper describes Rama, a first generation experimental information retrieval and filtering system that attempts to recover useful information from various Internet sources including USENIX news and anonymous FTP servers. The focus of the Rama system to date has been on building a distributed query and information retrieval system, which provides an interface to heterogeneous information services. A user of Rama sends one or more asynchronous queries to a Rama server using existing SMTP e-mail clients. The server periodically searches local and remote Internet services. Searches are prefiltered with the use of timestamps. Data objects which are newer than the timestamp are then searched via a query mechanism which relies on a combination of vector-distance, pattern matching operands, and boolean operators. Results are weighted according to how closely they match queries and are posted via e-mail to the user. Input to the e-mail client can be further filtered — one can use the MH mail system and sort input by weight. Results indicate that the current system is useful and extensible. So far we have assumed that existing e-mail systems will be used for input and output and have not attempted to construct special client interfaces. Efforts are underway to extend the system with WWW searching capabilities and construct a special WWW oriented user-interface.     

A parallel production system architecture

The growing importance of expert systems in real-time applications reveals the necessity of reducing response times. Since monoprocessor optimizations of production systems have widely been explored, only multiple processor architectures appear to provide further performance gain. Efficient exploitation of the inherent parallelism of production systems, however, requires suitable algorithms for load balancing without simultaneously increasing organization or communication overhead. We present a novel parallel algorithm for PAMELA expert systems, based on dynamic distribution of data processing. The concept is supported by a transputer based architecture with an advanced interconnection structure.     

An object-oriented architecture for knowledge-based production scheduling systems

This paper describes an object-oriented architecture to support decision making in production scheduling environments. An object-oriented world view is used to integrate concepts from discrete event simulation, conventional scheduling logic and artificial intelligence to produce capacity-feasible schedules. The architecture was implemented as a collection of loosely coupled reusable software objects by extending the functionality of software objects from BLOCS/M (Berkeley Library of Objects for Control and Simulation of Manufacturing). Our experience with an industrial prototype is presented.     

An enterprise architecture framework for multi-attribute information systems analysis

Enterprise architecture is a model-based IT and business management discipline. Enterprise architecture analysis concerns using enterprise architecture models for analysis of selected properties to provide decision support. This paper presents a framework based on the ArchiMate metamodel for the assessment of four properties, viz., application usage, system availability, service response time and data accuracy. The framework integrates four existing metamodels into one and implements these in a tool for enterprise architecture analysis. The paper presents the overall metamodel and four viewpoints, one for each property. The underlying theory and formalization of the four viewpoints is presented. In addition to the tool implementation, a running example as well as guidelines for usage makes the viewpoints easily applicable.     

石化企业信息系统架构分析

从石化企业的特点出发,分析了在石化企业中信息技术应用的重要性,对企业在信息化建设过程中常见问题进行了总结,对石化企业信息系统架构进行了分析,并对生产执行系统MES(ManufacturingExecutionSystem)在石化企业信息系统架构中的作用进行了分析。     

An agent architecture for multi-attribute negotiation using incomplete preference information

A component-based generic agent architecture for multi-attribute (integrative) negotiation is introduced and its application is described in a prototype system for negotiation about cars, developed in cooperation with, among others, Dutch Telecom KPN. The approach can be characterized as cooperative one-to-one multi-criteria negotiation in which the privacy of both parties is protected as much as desired. We model a mechanism in which agents are able to use any amount of incomplete preference information revealed by the negotiation partner in order to improve the efficiency of the reached agreements. Moreover, we show that the outcome of such a negotiation can be further improved by incorporating a “guessing” heuristic, by which an agent uses the history of the opponent’s bids to predict his preferences. Experimental evaluation shows that the combination of these two strategies leads to agreement points close to or on the Pareto-efficient frontier. The main original contribution of this paper is that it shows that it is possible for parties in a cooperative negotiation to reveal only a limited amount of preference information to each other, but still obtain significant joint gains in the outcome.     

An architecture for managing virtual circuit and virtual path services in ATM networks

ATM networks rely on the Virtual Circuit (VC) and Virtual Path (VP) concepts to provide unicast connection-oriented services with Quality of Service (QoS) guarantees. This paper presents a model for managing the configuration and performance of the VC and VP services in these networks. The model consists of a connection management architecture that provides the services and is instrumented for network management purposes, and a network management architecture that uses the OSI management model to provide access to the appropriate service monitoring and control functions. The network management architecture proposes complete managed object definitions that achieve a variety of monitoring and control objectives: service configuration, service performance at the call and cell level, and service control. The latter includes the capability to establish VPs and control their allocated networking capacity and also control parameters of the signaling system that affect the performance of the VC service. The architecture was implemented in its entirety on the Xunet ATM testbed, and several experiments were conducted to illustrate the trade-off between the throughput of the VC service and the allocation of capacity to VPs. The experiments further demonstrated that the signaling system can create throughput bottlenecks in the absence of VPs in the network, and therefore, the network operator can increase performance by controlling the VP distribution.     

面向构件的门诊部信息管理系统软件架构

构件化软件的设计集中于软件体系结构设计,其最主要的特征在于目标系统由大量可复用构件组成,这就要求在设计阶段应当设计出满足需求的软件体系结构。以一个门诊部信息管理系统软件架构为例,介绍了面向构件的软件架构方法,并对系统架构选型进行分析,提出了本系统的软件架构,为基于构件技术的系统实现提供良好的依据。     

数据库应用系统安防体系研究与设计

数据库应用系统的不安全因素除了数据库本身的安全性之外,主要表现在3个方面:数据存储在站点上的不安全因素,数据库应用程序的脆弱性以及数据库中敏感数据的危险性.提出了数据库应用系统安全防御的多层体系,将数据库应用系统安防体系划分为3个层次:决策层、代码层和数据加密层.首先保证存放数据库站点的安全性,其次保证访问数据库应用程序的健壮性和安全性,最后保护数据库中的数据的机密性.     

高校实验室信息管理系统的分析与构架设计

随着我国高校发展和改革的步伐日趋加快,办学规模不断扩大,实验室基本建设及设备的投入逐年增加.面对规模庞大、事务繁杂的实验室工作,许多管理上的弊端逐渐暴露出来.目前高校实验室管理软件系统功能单一、可维护性差,无法满足高校实验管理工作流程,无法做到全面管理实验室事务.从这一点出发,对实验管理相关工作的业务流程进行化整合,设计高校实验室信息管理系统势在必行.