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구용완,황만수 수원대학교 기초과학연구소 1992 基礎科學論文集 Vol.1 No.-
In this paper functions were developed to control traffic and modify telephone network congestion while sensing the state of telephone lined to network where traffic congestion occurred among telephone network. TDX-10 in this system as a electronic exchange system that capacity is so large is designed to process simultaneously many calls by concurrent processing method which is different to existing exchange system that adopts sequential processing method.
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구용완,황만수,권진혁 수원대학교 기초과학연구소 1992 基礎科學論文集 Vol.1 No.-
This study has a purpose to design to supply the limited function of PABX widely for users. That is, in normal state this system give a service of customer premised system(CPS) and but in emergency supplies individual switching function as a stand-alone so that the service is available all the time. Also this system can locate in local area in which large capacity exchange system is not needed so economic advantage could be achieved.
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분산 시스템에서 히스토리 기법을 이용한 자기 학습 부하균등화
구용완,정진명 수원대학교 기초과학연구소 1996 基礎科學論文集 Vol.5 No.-
This study intended, for maximize resource utilization, to store system_state_information which periodically exchanged in distributed system into history table, and on the basic of the result, and proposed load balancing model performing nonpreemptive load balancing, and designed load balancing algorithm. When same job was scheduling later as load balancing scheduler having self-learning function on the basis of the stored content in history table(such as job type, working time, turnaround time, I/O time per job, etc., obtained from its past experience), this system positively decide whether transfer of that job to remote node is proper or not.
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丘龍完 水原大學校 1987 論文集 Vol.5 No.-
This paper described the modification and complement of XINU operating systems to allow possible real time operating systems. The IPC machanism was developed. It is not onle optimally inserted into the communication layer of kernel for efficient synchronyzation of the processors which exist many site, but also applied to workstation based on LAN. For these purpose, the events and semaphores are introduced and designed for solving the synchronization and cooperation problems.
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丘龍完 수원대학교 산업기술연구소 1987 산업기술연구소논문집 Vol.2 No.-
This paper presents an improved approach to design of real time operating system for real time event manager. This paper presents a number of refinements to basic concept that allows the real time. The two key ideas are 1) a new synchronization scheme, event, that is efficient for external event and external condition 2) a refined real time clock interrupt handler that is able to access by time counter. This paper divides the model into machine dependent part and machine independent part under the environment of IBM-PC/AT with intel 80286 microprocessor. Machine dependent part was written in assembly language and machine independent part in C language and these were implemented to apply to various application fields easily.
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구용완 수원대학교 자연과학연구소 1998 자연과학논문집 Vol.1 No.-
Distributed system characterized by a high degree of intercomputer resource sharing generally perform better if resources are managed utilizing as much knowledge of current global state of the system as possible. But computers in a distributed system often view the global system quite differently. Consequently, decisions which produce system-wide effects made by computers can often conflict, and causing inefficiency in resource management and therefore is to downgrade performance. This thesis presents a knowledge-based distributed resource manager to solve the related problems. It is consists of three modules. First module is a local state monitoring & updating module for monitoring events of local node. Second module is a state announcing module for distributing monitored state information throughout the distributed system. Last module is a decision making module for inference future state of each node. Also, it applicants to load balancing and performance evaluation through the simulation. Simulation result show that decrease the load imbalance and average response time of the system, also keep state to be stable average response time under surge load.
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丘龍完 水原大學校 1991 論文集 Vol.9 No.-
In this paper the transaction protocol which is able to perform efficiently communication between distributed process in computers linked to Local Area Network in environment of UNIX was proposed. This special protocol designed in kernel tasks, ie, transaction manager, transaction interrupt manager, and port manager.
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클러스터링을 이용한 실시간 주문형 멀티미디어 시스템에 관한 연구
丘龍完 水原大學校 1999 論文集 Vol.17 No.-
A MOD server is most important element in MOD system. It stores massive multimedia data in storage device such as disk array. When a MOD client requires a certain video play-back, MOD server retrieves it and transmits client. Hence, in this thesis, we analyse requirements to be considered for a MOD server and then design an efficient Soft Real-Time MOD server system using clustering.
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지리 정보 시스템을 위한 DXF 파일 변환기의 설계 및 구현
문진용,구용완 수원대학교 자연과학연구소 1999 자연과학논문집 Vol.2 No.-
In this paper, we design and implement a DXF converter which converts a DXF file into a PostScript file since the latter is one of the most powerful graphics formats and can be used for various printers directly. It consists of the File manipulation module, the DXF file manipulation module, and PostScript file generation module. In order to develop the DXF converter, we first analyze each of the file formats (i.e., DXF and PostScript formats), and then implement and test the three modules. Finally, we develop the complete DXF file converter by combining the three modules.
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구용완 ( Yong-wan Koo ),한대만 ( Dae-man Han ) 한국인터넷정보학회 2007 인터넷정보학회논문지 Vol.8 No.4
인터넷 서비스에 대한 수요의 폭발적인 증가로 인한IP 주소 부족 문제가 대두 되면서 인터넷 통신규약 표준 기관인 IETF에서는사용자들이 가상의 사설 IP 주소 영역을 지정하여 사용할 수 있는 NAT 및 NAPT기능을 규정하였다. 본 논문에서는 ADSL을 통하여 서비스 되는 하나의 공인 IP주소를 이용하여 여러 대의 PC 및 다수의 인터넷 접속 단말기 사용자가 동시에 인터넷 서비스를 이용할 수 있도록 NAPT기능을 사용하여 ATMOS 기반의 ADSL-IP 공유기 통합용 네트워크 모듈을 설계 및 구현 하였으며 또한 구현된 ADSL-IP 공유기 통합용 네트워크 모듈의 성능 테스트 및 분석을 실시하였다. Since the problem of IP address shortage is caused by the explosive increases of demand for internet service, the IETF has defined the NAT and NAPT that users are able to designate and utilize a private IP address area for their own purposes. In this paper, we have designed and implemented a network module for integration of ADSL-IP Sharer using ATMOS, which uses a global IP address to work through ADSL and NAPT for simultaneous PC accesses to a broadband line. we have tested and analyzed the performance of the proposed network module for integration of ADSL-IP Sharer using ATMOS
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