• Journal of the Korea Society of Computer and Information
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• v.6 no.1
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• pp.103-112
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• 2001

As electronic environment is changed owing to the developments of computers and telecommunication technique, the meaning of working process is changed because individual working process is shifted to overall working process of each groups while main frame is transferred to server environments. By using groupware, productivity of office work's is increased not only quality matter but also quantity matter and rapid and various services are provided. In order to realize united office automation, when educational programs are assembled at office automation related departments in junior colleges, it will help to stress importance of groupware.

• Journal of the Korea Society of Computer and Information
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• v.3 no.2
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• pp.45-55
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• 1998

The purpose of our study is to develop a prototype groupware environment that addresses the different phases of meetings as well as to provide for customizable meetings. We describe several components that can be used to support the entire life-cycle of a distributed meeting. Our design is based on the premise that meetings are comprised of three stages: pre-meeting setup, during meeting activities, and post-meeting teardown. Additionally, meetings are individual, each requiring a different set of tools and applications. Our protype contains six components to support these stages. These components are electronic mail, bulletin board, organizer, agendas, virtual meeting room, and storyboard viewer.

• Journal of Korea Society of Digital Industry and Information Management
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• v.5 no.4
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• pp.87-97
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• 2009

Internet network routing system is used to prevent spread and distribution of malicious data traffic. This study is based on analysis of diagnostic weakness structure in the network security domain. We propose an improved integrated multi-level protection domain for in the internal route of groupware. This paper's protection domain is designed to handle the malicious data traffic in the groupware and finally leads to lighten the load of data traffic and improve network security in the groupware. Infrastructure of protection domain is transformed into five-stage blocking domain from two or three-stage blocking. Filtering and protections are executed for the entire server at the gateway level and internet traffic route ensures differentiated protection by dividing into five-stage. Five-stage multi-level network security domain's malicious data traffic protection performance is better than former one. In this paper, we use a trust evaluation metric for measuring the security domain's performance and suggested algorithm.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.22 no.50
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• pp.91-103
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• 1999

This paper deals with effectiveness of Object-Oriented Modeling and Design(OOMD) through GroupSystems V which is a typical groupware or group decision support system(GDSS) to aid group work. Objective and subjective evaluations between traditional non-GDSS face-to-face group and GDSS-supported group have been performed in terms of modeling accuracy and subjective ratings, respectively. Experimental results indicate that the GDSS group shows much better performance than the traditional group in the realm of OOMD. In particular, when a modeling task is not simple or not structured, the former outperforms the latter. Based on the questionaire, the GDSS group feel more equal status and have less dominant voices than do the non-GDSS group. These facts show that GDSS can be used effectively for OOMD under Korean cultures.

• Proceedings of the Korea Database Society Conference
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• 1995.12a
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• pp.109-116
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• 1995

본 논문에서는 그룹웨어(groupware) 또는 CSCW(Computer Supported Cooperative Work) 사용자들이 공유할 데이터들을 그룹 공유 영역에 위치시킨 후 그룹 공유 영역 내의 공유 객체에 대한 접근을 그룹웨어 사용자들에게 제공하는 구조를 제시하고, 그룹공유 영역의 구현을 위해 실시간 그룹웨어 응용에 의존하지 않는 구조를 지닌 공유 영역 서버인 SAS(Shared Area Server)에 대해서 기술한다. 그룹웨어 응용에게 공유 영역에 대한 접근을 제공하는 SACI(Shared Area Client Interface)와 함께 SAS는 하이브리드 구조를 구성하고 SAS와 SACI 그리고 그룹웨어 응용 사이에는 비동기 메시지 전달 방식을 제공한다. 본 논문에서는 실시간 그룹웨어에서 사용하는 공유 객체에 대한 동시성제어를 다루면서 기존 연구와의 차이점을 기술한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2014.07a
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• pp.443-445
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• 2014

유비쿼터스 및 스마트 기반의 모바일 업무관리 소프트웨어의 개발은 정보화 수준이 미비한 국내 사회복지 기관의 현실을 감안하여 언제 어디서나 업무관리가 가능한 모바일용 그룹웨어 개발은 꼭 필요하다. 현재 국내 복지기관의 특성상 소규모 인력형태에서 업무관리를 위한 그룹웨어가 꼭 필요하지만 높은 단가와 도입에 대한 기회비용의 과다, 복지현장의 현실과 동떨어진 솔루션 구성 등이 문제가 되고 있는 실정이다. 이러한 현실을 감안하여 인터넷과 모바일을 통한 유비쿼터스 기반의 업무관리가 가능한 그룹웨어를 개발하여 제안한다.

• Journal of Digital Contents Society
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• v.15 no.3
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• pp.395-403
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• 2014

Recently webhard services in various applications have been notably increased. In order to adopt some webhard functions into the existing application platform, however, a lot of manpower and cost is necessary. In this paper, we propose webhard API based on cloud storage for building and extending the webhard functions. The proposed system consists of three layers: application, web-hard server, and storage server in which each layer provides its API independently. It is enable the developer to easily extend the webhard functions to the application by using only HTTP request, which provides no limitation of the programming language. Because our webhard API is running on the virtualized cloud storage, it is possible to easily extend the storages and to reduce the maintenance cost. In this paper, we implement all the webhard API and then show the result of adopting the API to a prototype groupware system.

• Journal of the Korean Society for Library and Information Science
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• v.41 no.4
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• pp.217-227
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• 2007

This study describes a system which makes children use a cooperation study for the education of a library use and applies SDG technology to this cooperation study SDG means a system which is able to do a cooperation work as a multi-inputting device in a computer display. Through the use library utilization education system based on SDG, learners study simultaneously and collaborately. On this thesis. We embodied the understanding of the decimal classification of Korea and the arrangement of a bookshelf and the study of the location tracking as a game style based on an existed study that a cooperation study used SDG is more superior that an individual study used a single device. Librarians through this system will be able to easily and interestingly instruct children for the use of a library.

• Journal of KIISE:Computing Practices and Letters
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• v.9 no.4
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• pp.369-380
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• 2003

With the proliferation of a wireless support and the advances of mobile devices, there is a growing need of making it available for a wireless network as well. Low bandwidth of a wireless network is one of the major issues that should be considered for extending a synchronous collaboration system developed for a wired network to supuort a wireless network. We propose a priority-based view synchronization scheme, exploiting the relaxed synchronization. The proposed scheme leverages the fact that mobile users need not have the exactly same view as the users in a wired network since they usually have a limited screen size and thus focus only on part of a whole document. We evaluate the performance of a simple group editor with the propose scheme using ns -2. The performance results show that the proposed scheme keeps the message transmission delay low so that mobile users can have synchronous colloboration with wired users without signification delay. The proposed scheme is designed and implemented as a framework to support various kinds of realtime groupware applications, exploiting the existing groupware framework, Habanero. As a client program, we implemented a simple group text editor.

• Journal of the Korean Operations Research and Management Science Society
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• v.24 no.4
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• pp.157-170
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• 1999

The web-based groupware systems hold many possibilities for system developers and users. Especially, web-based group collaborative systems are emerging as enterprise-wide information systems. Since data in group collaborative systems are apt to be shared among multiple concurrent users and modified simutaneously by them, the web-based group collaborative systems must support synchronous collaboration in order to provide users with synchronized and consistent views of shared data. However, current web technologies have limitations in supporting this, largely because the existing Hypertext Transfer Protocol(HTTP) is unidirectional and does not allow web servers to send messages to their web browsers without first receiving requests from them. This paper proposes an active web server that can overcome such limitations and facilitate synchronous collaboration in web-based group collaborative systems. To accomplish such goals, the active web server manages dependency relationships beween shared data and web browsers referencing them and actively propagates changing details of the shared data to all web browsers referencing them. And, this paper examines usefulness and effectiveness of the active web server to apply it to the ball-bearing design example of concurrent engineering design systems. The prototype system of the active web server is developed on a commercial Object-oriented Database Management System(0DBMS) called OBJECTSTERE using the C++ programming language.