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NUMA(non-uniform memory access) 모델 시스템을 위한 cost-effective한 다단계 상호연결망
최창훈,김성천 대한전자공학회 1997 電子工學會論文誌, C Vol.c34 No.5
So far, the multiple path MINs to provide redundant paths in the traditional UPP MINs have been realized by adding additional hardware such as extra stages, duplicated data links, or multiple copies of sthe MIN. And the traditional MINs do not exploit locality: communication with all processor-memory paris takes the same amount of time. Also so far there has been little progress for exploiting locality of reference in MINs. In this paper, we present a new topology MIN, hybrid MIN that is constructed with 2N-3 SEs which is far fewer SEs than that of traditional MINs. Although the hybrid MIN is constructed with 2N-3 SEs, the hybrid MIN satisfies full access capability (FAC) and has redundant paths(but providing single path for 2 memory modules of each processor). Moreover the has redundant paths (but providing single path for 2 memory modules of each processor). Moreover the Hybrid MIN provides shortcut path between pairs which have frequent dat acommunication (locality of reference). Its performance under varing degrees of localized communication is analyzed.
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최창훈,김수용,Choi, Chang-Hoon,Kim, Soo-Yong 한국건설관리학회 2006 건설관리 : 한국건설관리학회 학회지 Vol.7 No.3
In the analysis of function, which is the core and early phase among the procedure of construction VE Job Plan, the accuracy of function definition directly connects to VE result. However, the method of defining function, which is currently used is not accurate and comprehended or is difficult to utilize it systematically. Also, there is not a clear definition about the function for selecting VE so that many difficulties occur in the organic connection between each of functions in the summarization of function after defining function. Therefore, this study cleared the definition of function and made up any counter measured problem occurred in FAST Diagram later on and suggested CAFAT(Combined Antithetic Function Analysis Technique) in order to induce better phase in functional analysis.
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병렬처리 시스템에서의 Dual 네트워크의 설계 및 오류허용 라우팅 전략
최창훈,김성천 한국통신학회 1994 한국통신학회논문지 Vol.19 No.6
The Gamma Network contains the redundant path thereby is provides the ability to tolerate the faults occured. However, in case of identical the source and destination number, only a single path exists, therefore there is no way of connecting for the fault situation. In addition, for the dynamic packet routing strategy, it shoed perform backtracking analysis to find the redundant path. In this paper we proposed a new network, Dual Network, to resolve these drawbacks. The Dual Network uses switching elements about the same network size as the Gamma Network except first and last stage, and it is more efficient than the Gamma Network, for it has reduced the switching stage by one. And since is used a destination tag routing scheme for the control algorithm, it has on advantage of becoming of simpler and faster routing control.
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고속 USB 인터페이스에 의한 멀티미디어 영상 수신 제어
최창훈,이병문,Choi, Chang-Hoon,Lee, Byung-Mun 한국정보과학회 2005 정보과학회논문지 : 기술교육 Vol.2 No.1
High speed Internet provides many users with multimedia internet services. And also DMB services give us the digital services integrated with broadcastings and internet. Additionally, We can watch the TV contents with TV receiver facilities on a computer since later of 1990, and it has evolved into the integrated digital devices. By this time TV receiver on a Microsoft windows is popular according to the need of market place. However, TV receiver on a Linux or Unix platform is rarely available in spite of recent development of Linux which has gotten more powerful multimedia facilities. In order for TV receiver to be available on a Linux, it is designed and developed the Linux based device driver and controller software in this Paper And also, it is designed to access high speed USB interface to deal with multimedia contents.
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최창훈,안진하,이병문,Choi, Chang-Hoon,Ahn, Jin-Ha,Lee, Byung-Mun 한국정보과학회 2005 정보과학회논문지 : 기술교육 Vol.2 No.1
Soojichim has known as the folk remedies of all over the world. In this paper, therefore we achieve to make out a prescription of the acupunctured regions on 3D web browser, as we use techniques of virtual reality with database and VRML. In this system we have a VRML system reconstructed by a prescription which is stored in the database, whenever a VRML browser is executed. We improved the productivity of a prescription and the reusability of virtual reality object value. Therefore you would get the accurate map of the acupunctured regions as the prescription to input only the name of a disease in web browser.
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인터넷TV 서비스의 채널전환 시간 자동화 측정 방법 연구
최창훈,문석환,황락훈 한국차세대컴퓨팅학회 2015 한국차세대컴퓨팅학회 논문지 Vol.11 No.6
인터넷TV 서비스 활성화로 인하여 아날로그 방송에서 디지털 방송으로 전환이 급속히 이루어지고 있으며, 인터넷TV는 서비스 특성상 네트워크, 채널 결합 신호방식(CAS, channel associated signaling) 등과 연동하여 서비스를 제공하고 있다. 이로 인해 IPTV 방송은 아날로그 방송에 비해 영상 지연현상 및 채널 전환 시간이 더 소요되며, 인터넷TV 서비스 사업자 및 STB(Set-Top Box) 제조업체에서는 채널전환 시간 최적화가 중요한 요소가 부각되고있다. 본 논문에서는 인터넷TV 실시간 방송 서비스에서의 채널전환 시간을 자동으로 측정하는 방법을 제시하고, 수동으로 측정한 채널 전환 측정 결과와 비교함으로써 제안 방법의 효과를 제시한다. The transition from analog broadcasting to digital broadcasting is being made rapidly due to the activation of IPTV, and IPTV is providing service by linking with network and channel associated signaling(CAS). Therefore IPTV broadcasting has image delays and takes more time in channel transition, compared to analog broadcasting. Optimization in channel transition time is spotlighted as a critical factor for service licensees and set-top box (STB) manufacture industries. This paper proposes the method for automatically measuring the channel transition time in IPTV live broadcasting service, and compares with the result of manually measured channel transition time to show the effect of the proposed method.
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