• Title, Summary, Keyword: CSCW(Computer Supported Cooperative Work)

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An Error Detection and Recovery System based on Multimedia Computer Supported Cooperative Work (멀티미이어 협동 작업환경에서의 오류 감지 및 복구 시스템)

  • Ko, Eung-Nam;Hwang, Dae-Joon
    • The Transactions of the Korea Information Processing Society
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    • v.7 no.5
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    • pp.1330-1340
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    • 2000
  • Multimedia isn ow applied to various real world areas. In particular, the focus on multimedia system and CSCW(Computer Supported Cooperative Work) has increased. In spite of this current trend, however, the study of fault tolerance for CSCW has not yet fully progressed. We propose EDR_MSCW. It is a system that is suitable for detecting ad recovering software error based on multimedia computer supported cooperative work as DOORAE by using software techniques. DOORAE is a framwork for supporting development on multimedia applications for computer-based collaborative works. When an error occurs, EDR_MCSCW detects an error by using hooking methods in MS-Windows API(Application Program Interface) function. If an error is found, we present a checkpointing and recovery algorithm which has the removal function of the domino-effect for recovering multimedia and CSCW by using stack.

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Study on the RBAC Model including the work concept in the CSCW environment (CSCW환경에서의 Work개념을 수용한 RBAC모델에 관한 연구)

  • 심완보
    • Proceedings of the Korea Multimedia Society Conference
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    • pp.510-513
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    • 2000
  • 앞으로 전산 시스템에서는 독자적인 사용자의 전산 시스템 이용보다는 조직내의 다수의 작업 참여자간의 의사소통과 정보의 교환 및 공유가 원활히 이루어지도록 할 수 있는 시스템의 지원이 필요하게 되었다. 이러한 전산환경을 CSCW(Computer Supported Cooperative Work)환경이라고 하며 많은 구성원이 공통된 자원을 공유함으로 해서 발생할 수 있는 보안 문제가 발생하게 된다. 이 문제를 해결하기 위한 방안으로 최근 다수의 사용자가 공유자원을 사용하는데 있어 발생할 수 있는 관리의 복잡성을 해결하기 위해 RBAC(Role Based Access Control) 개념이 연구되고 있다. 그러나 CSCW환경과 같이 Work개념이 중요한 환경에서는 기존의 RBAC개념만으로는 공유자원의 접근제어문제 해결에 어려움이 있어 본 논문에서는 Work개념을 RBAC모델에 도입한 CSCW환경 하에서의 RBAC 모델을 제시해 보고자 한다.

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A Design of Requirement Engineering Process Model Based on CSCW Enviroment (CSCW 환경에 기반한 요구공학 프로세스 모델 설계)

  • Hwang, Man-Soo;Lee, Won-Woo;Rhew, Sung-Yul
    • The Transactions of the Korea Information Processing Society
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    • v.7 no.10
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    • pp.3075-3085
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    • 2000
  • According to distributed, large-caled environment of software development and operation, the elicitation and specivication of correct and complete requrement is the most important factor for the system. In addition contiuous and dramatic systerm canging requests in cooperative environment with internet require more efficient, requirement management. In this paper we detine the specification architecture and techruques for requrements, so that we improve the efficiency ofnatural language-based requirement speciticationand management in a cooperatie work environment. Also, we propose a software requirement engineering process model and environment based on requirements in a CSC@(Computer Supported Cjooperative Work) environment, therefore transfer them into analysis phase.

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Mechanisms for Personalization of Documents Utilizing Environment concept in Multiuser Hypermedia System (협조 하이퍼미디어 시스템에 있어서 환경을 이용한 개별화 기구)

  • 이상훈
    • Journal of the military operations research society of Korea
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    • v.27 no.1
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    • pp.114-127
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    • 2001
  • To support cooperative work in various scenes by computer systems, functions of sharing personalization, observation and control are needed. Especially, in advanced cooperative work, people have various position so that sometimes one person needs to restrict behavior of another. In this paper, we describe representation of access restriction of hypermedia system, which is framework of CSCW(Computer-Supported Cooperative Works) system we developed and propose a way to go on working cooperatively with people, restricting others.

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A framework for CSCW in Distributed Environment (분산 환경 하에서의 공동 작업을 위한 프레임웍 설계)

  • 박상문;이태동;조성업;정창성
    • Proceedings of the Korean Information Science Society Conference
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    • pp.42-44
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    • 2000
  • 본 논문에서는 최근 다양한 분야에 응용되고 있는 Computer-supported Cooperative work(CSCW)를 위한 새로운 구조적 모델을 제안한다. 본 논문에서는 제안하는 구조적 모델은 현재까지 만들어져온 CSCW 시스템 모델들의 특징과 구조를 분석하고서, 분산 환경을 기반 환경으로 해서 보다 객체 지향적으로 설계한 것으로서 완벽한 peer to peer의 구조를 취한다. DOVE(Distributed Objected-oriented Virtual Environment)라는 분산 환경 하에서 설계된 본 시스템은 DOVE가 제공하는 서비스의 하나인 객체 그룹 원격 호출(Object group method invocation)을 이용해서 객체들에 대해서 멀티캐스팅하는 방식을 사용했으며 이를 통해 cooperative work를 위한 최고의 성능을 제공할 수 있도록 설계되었다.

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Sharing Application and Distributed Collaboration Control for Cooperative Work (공동작업을 위한 분산 협조 제어와 애플리케이션 공유)

  • Park, Mun-Seong;Kim, Jin-Seok
    • Electronics and Telecommunications Trends
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    • v.11 no.2
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    • pp.81-97
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    • 1996
  • 본 고는 공동작업의 환경에서 필요한 요구 사항을 애플리케이션, 기능, 기술 그리고 유연성 부문으로 나누어 정의하고, CSCW(Computer Supported Cooperative Work) 기반의 공동작업 시스템 모형을 제시하였다. 또한 분산 협조 제어 구조로 공동작업을 할 수 있는 시스템들을 조사 및 분석하여, 공동작업 시스템 구성에 필요한 기술과 요구 사항을 제시하였다.

CoSpace: A Web-based Collaborative Environment Supporting Shared Workspaces (CoSpace: 공유작업공간을 지원하는 웹 기반 공동작업환경)

  • Jeong, Su-Gwon;Kim, Gyu-Wan;Kim, In-Ho;Jeong, Jae-Hun;Lee, Myeong-Jun
    • The Transactions of the Korea Information Processing Society
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    • v.6 no.11S
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    • pp.3420-3433
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    • 1999
  • Since most of CSCW(Computer-Supported Cooperative Work) systems have been developed for particular computing platforms, they are usable only within the specific organizations supporting those particular platforms. Recently, according to the rapid growth and continuing success of the World-Wide Web(WWW or Web) which offers a globally accessible platform-independent infrastructure, many CSCW systems has been constructed and is being developed on the basis of the Web. As one of such CSCW systems, in this paper, we describe the design and implementation of the CoSpace system. The CoSpace system provides shared workspaces, which enable members of a work group easily share information for collaborative work through their Web Browsers. The shared workspaces support information sharing and management between users, and also support event monitoring and synchronization between collaborative works.

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Development of Mobile Volume Visualization System (모바일 볼륨 가시화 시스템 개발)

  • Park, Sang-Hun;Kim, Won-Tae;Ihm, In-Sung
    • Journal of KIISE:Computing Practices and Letters
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    • v.12 no.5
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    • pp.286-299
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    • 2006
  • Due to the continuing technical progress in the capabilities of modeling, simulation, and sensor devices, huge volume data with very high resolution are common. In scientific visualization, various interactive real-time techniques on high performance parallel computers to effectively render such large scale volume data sets have been proposed. In this paper, we present a mobile volume visualization system that consists of mobile clients, gateways, and parallel rendering servers. The mobile clients allow to explore the regions of interests adaptively in higher resolution level as well as specify rendering / viewing parameters interactively which are sent to parallel rendering server. The gateways play a role in managing requests / responses between mobile clients and parallel rendering servers for stable services. The parallel rendering servers visualize the specified sub-volume with rendering contexts from clients and then transfer the high quality final images back. This proposed system lets multi-users with PDA simultaneously share commonly interesting parts of huge volume, rendering contexts, and final images through CSCW(Computer Supported Cooperative Work) mode.

An intelligent planner of processing equipment for CSCW-based shop floor control in agile manufacturing

  • Kim, Hwajin;Cho, Hyunbo;Jung, Mooyoung
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • pp.185-192
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    • 1995
  • A common control model used to implement computer integrated manufacturing(CIM) is based on the hierarchical decomposition of the shop floor activities, in which supervisory controllers are responsible for all the interactions among subordinates. Although the hierarchical control philosophy provides for easy understanding of complex systems, an emerging manufacturing paradigm, agile manufacturing, requires a new control structure necessary to accommodate the rapid development of a shop floor controller. This is what is called CSCW(computer supported cooperative work)-based control or component-based heterarchical control. As computing resources and communication network on the shop floor become increasingly intelligent and powerful, the new control architecture is about to come true in a modern CIM system. In this paper, CSCW-based control is adopted and investigated, in which a controller for a unit of device performs 3 main functions - planning, scheduling and execution. In this paper, attention is paid to a planning function and all the detailed planning activities for CSCW-based shop floor control are identified. Interactions with other functions are also addressed. Generally speaking, planning determines tasks to be scheduled in the future. In other words, planning analyzes process plans and transforms process plans into detailed plans adequate for shop floor control. Planning is also responsible for updating the process plan and identifying/resolving replanning activities whether they come from scheduling or execution.

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CoSpace : A Web-based Collaborative Environment Supporting Shared Workspaces (CoSpace : 공유작업공간을 지원하는 웹 기반 공동작업환경)

  • 정수권;김규완;김인호;한천용;이명준
    • Proceedings of the Korean Information Science Society Conference
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    • pp.227-229
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    • 1999
  • 과거 대부분의 CSCW(Computer-Supported Cooperative Work) 시스템은 특정 플랫폼에 의존하여 개발되었기 때문에 일반적으로 해당 플랫폼 환경이 구축되어진 조직 내에서만 사용이 가능하였다. 최근 어디서나 접근 가능할 수 있도록 플렛폼에 독립적인 환경을 지원하는 웹의 급속하고도 지속적인 성장에 따라 많은 CSCW 시스템들이 웹 환경을 통하여 사용할 수 있도록 구축되었고 또한 현재 개발중에 있다. 본 논문에서는 그러한 웹 기반 CSCW 시스템인 CoSpace 시스템의 설계와 구현에 대해 기술한다. CoSpace 시스템은 작업 그룹의 구성원들이 공동작업을 위해 웹 브라우저를 사용하여 정보를 쉽게 공유할 수 있는 공유 작업공간을 지원한다.

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