Interface methods for using intranet portal organizational memory information system

In this paper, an intranet portal is considered as an information infrastructure (organizational memory information system, OMIS) supporting organizational learning. The properties and the hierarchical structure of information and knowledge in an intranet portal OMIS was identified as a problem for navigation tools of an intranet portal interface. The problem relates to navigation and retrieval functions of intranet portal OMIS and is expected to adversely affect user performance, satisfaction, and usefulness. To solve the problem, a conceptual model for navigation tools of an intranet portal interface was proposed and an experiment using a crossover design was conducted with 10 participants. In the experiment, a separate access method (tabbed tree tool) was compared to an unified access method (single tree tool). The results indicate that each information/knowledge repository for which a user has a different structural knowledge should be handled separately with a separate access to increase user satisfaction and the usefulness of the OMIS and to improve user performance in navigation.     

A metadata filter for intranet portal organizational memory information systems

An intranet portal is proposed as an information infrastructure to support organizational learning. Specifically, an agent-like metadata filter for easy information/knowledge retrieval in the intranet portal is suggested and tested. The metadata filter preserves the context of digital objects and presents an uncluttered window by controlling the metadata elements. An experiment using 20 participants examined whether the metadata filter reduces search and retrieval performance time (the dependent variable). The main results indicate that the metadata filter significantly (36%) improved user's performance in identifying information. The results of the study suggest that the proposed metadata filer may be an effective interface tool to improve users' performances in identifying information in an intranet portal organizational memory information system.     

Development and validation of user-adaptive navigation and information retrieval tools for an intranet portal organizational memory information system

Based on previous research and properties of organizational memory, a conceptual model for navigation and retrieval functions in an Intranet portal organizational memory information system was proposed, and two human-centred features (memory structure map and history-based tool) were developed to support user's navigation and retrieval in a well-known organizational memory. To test two hypotheses concerning the validity of the conceptual model and two human-centred features, an experiment was conducted with 30 subjects. Testing of the two hypotheses indicated the following: (1) the memory structure map's users showed 29% better performance in navigation, and (2) the history-based tool's users outperformed by 34% in identifying information. The results of the study suggest that a conceptual model and two human-centred features could be used in an user-adaptive interface design to improve user's performance in an intranet portal organizational memory information system.     

Development and validation of user-adaptive navigation and information retrieval tools for an intranet portal organizational memory information system

Based on previous research and properties of organizational memory, a conceptual model for navigation and retrieval functions in an Intranet portal organizational memory information system was proposed, and two human-centred features (memory structure map and history-based tool) were developed to support user's navigation and retrieval in a well-known organizational memory. To test two hypotheses concerning the validity of the conceptual model and two human-centred features, an experiment was conducted with 30 subjects. Testing of the two hypotheses indicated the following: (1) the memory structure map's users showed 29% better performance in navigation, and (2) the history-based tool's users outperformed by 34% in identifying information. The results of the study suggest that a conceptual model and two human-centred features could be used in an user-adaptive interface design to improve user's performance in an intranet portal organizational memory information system.     

专用园区网络系统安全风险评估研究

对网络安全的风险评估不仅是专用网络系统建设的重要内容,也是其园区单位进行网络安全规划、实施与管理的基础.结合园区网络系统安全的现状,阐述了对专用园区网络信息安全风险评估问题的认识,通过构建风险评估模型及量化方法,结合评估过程实例,分析了目前用于专用园区网络系统安全风险评估的主要过程,并针对网络信息安全风险评估结果中存在的问题,研究了相应可行的方法对策.     

基于网络的独立电缆网监控系统

针对某些重要的独立用电单位对供电网络高可靠性的实际要求，提出了一套基于Intranet网络的电缆网监控系统。该系统采用集散式监控模式，上位机完成系统监测与控制功能，下位机完成电缆的测试与故障定位，两者以Intranet网络进行数据传输。给出其基本原理、软硬件设计、数据库结构以及安全性设计。该系统在实验室条件下已经实现了正常运行。     

Effects of an ontology display with history representation on organizational memory information systems

Ontologies, as a possible element of organizational memory information systems, appear to support organizational learning. Ontology tools can be used to share knowledge among the members of an organization. However, current ontology-viewing user interfaces of ontology tools do not fully support organizational learning, because most of them lack proper history representation in their display. In this study, a conceptual model was developed that emphasized the role of ontology in the organizational learning cycle and explored the integration of history representation in the ontology display. Based on the experimental results from a split-plot design with 30 participants, two conclusions were derived: first, appropriately selected history representations in the ontology display help users to identify changes in the ontologies; and second, compatibility between types of ontology display and history representation is more important than ontology display and history representation in themselves.     

Effects of an ontology display with history representation on organizational memory information systems

Ontologies, as a possible element of organizational memory information systems, appear to support organizational learning. Ontology tools can be used to share knowledge among the members of an organization. However, current ontology-viewing user interfaces of ontology tools do not fully support organizational learning, because most of them lack proper history representation in their display. In this study, a conceptual model was developed that emphasized the role of ontology in the organizational learning cycle and explored the integration of history representation in the ontology display. Based on the experimental results from a split-plot design with 30 participants, two conclusions were derived: first, appropriately selected history representations in the ontology display help users to identify changes in the ontologies; and second, compatibility between types of ontology display and history representation is more important than ontology display and history representation in themselves.     

用路由器构造Intranet的防护体系

如何通过路由器的访问控制列表和地址转换技术，构造保护Ｉｎｔｒａｎｅｔ资源的防护体系。     

Articulation of work process models for organizational alignment and informed information system design

Articulating and representing procedural aspects of work in conceptual models is a prerequisite for informed information system (IS) design. Instruments supporting articulation need to establish common ground about the interaction of the collaborating actors. This article proposes a methodology for the articulation of work processes by inexperienced modelers. It consists of phases of articulation and consolidation of case-based models and interactive elaboration toward comprehensive representation of the process via virtual enactment. The resulting models can be directly interpreted by IS. A case study confirms that the methodology meets the identified requirements and identifies areas of improvement.     

Microcomputer selection process for organizational information management

This paper presents a selection model based on the Analytic Hierarchy Process (AHP). The methodology uses relevant organizational needs, required operational support categories, and respective attributes of the proposed systems in a selection hierarchy. Deriving a priority structure associated with this hierarchy permits the systematic comparison of candidate systems, and thereby selecting the one that best suits the organization. The application of this model to the selection of an accounting information system is described. The methodology outlined in this paper has been used in several large organizations (insurance and industrial corporations) for selection of their “standard micro” (or mini) computer systems. These systems were installed for various decentralized applications.     

Indices of the effectiveness of information protection in an information interaction system for controlling complex distributed organizational objects

In this paper, we present some indices for evaluating the effectiveness of information protection in an information interaction system when controlling complex distributed organizational objects and proposing a technique for determining these indices. The technique is based on a stochastic representation of the flow of destructive actions that affect the information interactions among controllers of the elements of a distributed organizational object.     

Measuring organizational impacts by integrating competitive intelligence into executive information system

Despite the progress that has been achieved using modern methods of decision support, competitive intelligence is one of the most economical methods of instrument for executive information system with a relatively high rate of effectiveness. The objectives of this study are (1) to investigate the conception of competitive intelligence and the furtherance of competitive intelligence on the executive information system stage; (2) to form an innovative structural equation modelling for executive information system through the perspectives of competitive intelligence; (3) to examine the influences of competitive intelligence on executive information system and organizational performances. Questionnaire survey methodology was applied to receive data from executives in Taiwan. The process, the product of competitive intelligence, and organizational performances were observed as three considerable axles in this investigation. The results reveal testimony that competitive intelligence is positively related to organizational performances, indicating that competitive intelligence does influence the behavior of decision-making both of enterprise executives and the entire organization. The findings of this study disclose that integrating competitive intelligence activities exert a complete function on executive information system for enterprise executives.     

Rethinking organizational learning: analyzing learning processes of information system designers

This paper introduces an alternative perspective on organizational learning that counters various assumptions within most of the writings on organizational learning. By posing who, how, when and why questions while reviewing the literature, four biases within the literature on organizational learning are identified. These biases concern respectively an individual learning bias, an active agency bias, a purposeful learning bias and an improvement bias. These hidden assumptions ensure that most literature tends to lean unnecessarily in certain directions, while overlooking others. The paper proposes several ways to counter these biases. A case story concerning the learning of old and new routines used by information systems designers is presented to illustrate the proposed alternative approaches to analyze organizational learning.     

A microprocessor-based multiprocessor system using common memory for communication

Different parallel algorithms require appropriate processor topologies to optimize their performance. An easily reconfigurable multiprocessor system which can accommodate different topologies, therefore, seems highly desirable. This paper presents a technique, based on processors sharing memory, which enables the construction of flexible multiprocessor systems.The system has certain limitations in that it is not dynamically reconfigurable at run time and that certain topologies may not be implemented directly. Such a system, however, may present an inexpensive way to experiment with matching multiprocessor topologies to algorithms, rather than rewriting algorithms to match the available hardware.     

支持信息集成的校园信息门户的研究与设计

信息集成是信息化发展到一定阶段的新需求,探讨了数字校园中信息集成的含义,并提出了一种支持信息集成的门户的体系结构.提出的校园信息门户对经典型门户体系结构进行了扩展,重点分析了校园信息门户各组成模块的功能和设计,也对校园信息门户实现的关键技术进行了探讨.校园信息门户对经典型门户的扩展部分的设计能够很好地符合数字校园信息集成的需求,是一套新颖且可行的校园信息集成解决方案.     

Anticipating information needs for senior portal contents

Many senior portals are expected to appear as the elderly population and the number of aged Internet users continues to increase. This study defines a senior portal as an Internet portal that is specific to seniors. The purpose of the study is to investigate what kind of content of senior portals is preferred by prospective users of senior portals, and to analyze the preference for contents. The study administered a survey to prospective senior portal users over 50 years of age who are residing in two large cities in Korea. This study found that content preferences vary according to the individual characteristics of prospective users. The findings of this study could help organizations to explore business opportunities, develop business models, and formulate business strategies that can differentiate them from their competitors.     

A model of a time sharing virtual memory system solved using equivalence and decomposition methods

Summary A queueing network model of a time-sharing multiprogramming virtual memory system is presented including the effect of memory sharing among processes. An approximate explicit solution is obtained using equivalence and decomposition methods.The influence of system and program behaviour parameters on system performance (mean response time and CPU utilization) is illustrated in the results obtained. The efficiency of controlling the degree of multiprogramming in order to prevent thrashing is also studied using a similar model.     

A comprehensive framework of information system design to provide organizational creativity support

This research is motivated by two considerations: (1) organizational creativity is a component that enhances the ability of organizations to retain their competitive advantage and (2) too little research has been conducted worldwide that focuses on the design of information systems to provide organizational creativity support. This research proposes a comprehensive and conceptual framework for the design of organizational creativity support systems. To address the objective of this study, two theories, the resource-based view and a multiagent approach, are used to build the model proposed. The customer opinions from websites concerning a consumer electronics product are used to validate such a system. The theoretical contributions, practical implications, and future directions of the study are presented and discussed.