• Proceedings of the Korea Information Processing Society Conference
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• 2006.11a
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• pp.153-156
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• 2006

최근 개인 컴퓨터에 저장되는 다양한 미디어 정보에 대한 검색요구가 크게 대두되면서, 다양한 데스크톱 검색 시스템이 출현하고 있다. 그러나, 기존 데스크톱 검색 시스템은 파일명, 일부 제한된 메타데이터, 콘텐츠들에 대한 키워드 기반의 검색을 수행하기 때문에 사용자의 요구에 부합하는 결과를 정확하게 제시하는 못하는 문제점이 있다. 본 논문에서는 이와 같은 문제점을 해결하기 위해서 시맨틱웹 기술을 활용하여, 온톨로지에 기반한 메타데이터를 정의하고 이를 기반으로 메타데이터간의 의미적 연관성에 기반한 시맨틱 데스크톱 검색/관리 시스템에 대해 기술한다.

• Journal of KIISE:Computing Practices and Letters
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• v.16 no.12
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• pp.1249-1253
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• 2010

As personal computers have been recently improved in performance, the multi tasking of running several applications at the same time has been generalized. Since only one task space is provided for performing such tasks on Windows operating system, a number of computer users feel inconvenient. In this paper, we propose a 3D Virtual Desktop System which can show a process of switching task spaces in 3D motion using DirectX. The proposed system can provide a computer user with more task spaces and the intuitive UI(User Interlace) such as Compiz of Linux.

• The Journal of the Korea Contents Association
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• v.9 no.4
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• pp.131-141
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• 2009

An increasing variety of malware, such as worms, spyware and adware, threatens both personal and business computing. Remotely controlled bot networks of compromised systems are growing quickly. This paper proposes an intrusion detection system based outflow traffic analysis. Many research efforts and commercial products have focused on preventing intrusion by filtering known exploits or unknown ones exploiting known vulnerabilities. Complementary to these solutions, the proposed IDS can detect intrusion of unknown new mal ware before their signatures are widely distributed. The proposed IDS is consists of a outflow detector, user monitor, process monitor and network monitor. To infer user intent, the proposed IDS correlates outbound connections with user-driven input at the process level under the assumption that user intent is implied by user-driven input. As a complement to existing prevention system, proposed IDS decreases the danger of information leak and protects computers and networks from more severe damage.

• Archives of design research
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• v.17 no.2
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• pp.269-278
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• 2004

This research categorizes various icons that used in PDAs according to symbolization patterns, operating systems and support for color display. Since different icons vary in communication capacity I executed this research to verify it positively. In result, PDA loons were found to have different intuitive communication capacity according to its functions, symbolization pattern, operating system and use of color. \circled1 Icons which have similar object as ones that are used on desktop computer and icons with accurate, simple expression seems to have higher intuitive communication capacity among the icons categorized by functions. \circled2 Among the icons categorized by symbolization pattern, ones that express the action related to their functions have the highest recognition accuracy and longer delay before recognition. \circled3 Among the icons categorized by operating systems, ones that have concrete expression of object and a number of representation elements have higher recognition accuracy and longer delay before recognition. \circled4 Among the icons categorized by color and grayscale, ones with color have superior communication capacity due to additional stimulation although LCDs in most PDAs have limited color depth.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.3
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• pp.680-690
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• 2011

To support asynchronous collaboration among remote users, collaborative applications provide collaboration services and environment through virtual workspaces. In general, collaborative applications support collaboration based on desktop-based personal computers, using the features such as resource sharing or asynchronous communication among users. Unfortunately, since those applications mainly run on personal computers, they do not easily support collaborative works in various places. In this paper, we describe the development of smartphone collaborative application which provides effective collaboration facilities like resource sharing through various types of workspaces or group communication, communicating with a WebDAV-based collaboration server. The developed application provides users with high accessibility through multi-touch/touch-slide based user-interfaces in mobile environment. To support effective communication with a collaboration server, we also present a WebDAV-based collaboration library using a collaboration protocol designed to analyze easily the responses from the collaboration server.

• Journal of Advanced Marine Engineering and Technology
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• v.31 no.6
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• pp.665-671
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• 2007

The purpose of this study is to find out a flow characteristics required by the design of a computer case and to provide information about the preliminary data of cooling efficiency of CPU and a flow inside of a case. We examined a flow characteristic-suction a tracing particle occurred from a surge tand installed at an inlet into a computer case and moving it to a exit duct-experimentally by using PIV. The experimental device was consists of a fan inflowing and discharging the air into the computer case and a slot installed with a CPU cooling ran add-on, and analyzed the data of Re-stress distribution, velocity distribution, and kinetic energy distribution. This research will make a great contribution to improvement of the efficiency and performance of notebook, workstation, server, and all the design of electronic devices using large scale integrated(LSI) as well as usual computers.

• Proceedings of the Korea Society of Design Studies Conference
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• 2005.10a
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• pp.66-67
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• 2005

기존의 데스크톱 컴퓨터가 고정된 공간에서만 사용되는데 반해 개인용 정보단말기(PDA)는 이동하면서 사용이 가능하다는 특징 때문에 소형화면과 작은 부피, 가벼운 용량의 특징을 지닌다. 그러나 이러한 제한된 화면에서는 한 번에 볼 수 있는 정보량이 적어 사용자 중심의 PDA용 GUI 아이콘 설계를 위해서는 우선 PC와 PDA간의 호환을 자유롭게 하는 인터페이스 디자인이 선행되어야 한다. 기존 소형화면에서는 한 번에 볼 수 있는 정보량이 적기 때문에 전체에 대한 개관이 불가능했고, 많은 정보를 담으면, 내용이해가 어려웠는데, 본 논문에서는 효율적인 GUI 아이콘 설계를 통해 정보의 ‘집중’과 ‘선택’ 이 가능한 PDA의 인터페이스 디자인을 알아보고자 한다. 대량 정보를 작은 화면에 종합적으로 담아내어 개관을 가능하게 하고, 정보의 내용과 가치를 아이콘의 크기와 색, 수직 혹은 수평적인 움직임 등의 시각화를 통해 차별화시킴으로써 개별 정보내용의 이해를 가능하게 한다. 앞으로 PDA와 PC의 표준화된 호환 가능한 브라우저가 모든 PDA에 기본 인터페이스로 장착된다면, 다른 매체들 간의 데이터 전송 시스템의 호환을 순조롭게 하여 경제적인 파급 효과 뿐만 아니라 차세대 이동통신의 영역까지 확장하여 산업적인 파급효과도 클 것으로 예상된다.