IT융합연구 기획ㆍ관리

한종석,임진양 한국통신학회 2008 정보와 통신 Vol.25 No.11

본고에서는 급격한 IT융합연구 추진에 앞서 융합연구의 특성에 맞는 기획ㆍ관리체계에 대해 논해보고자 한다. 바람직한 융합연구를 위해서 기획체계에서는 창의적인 아이디어의 창출, 철저한 선행기획 연구, 적절한 융합기술의 포트폴리오 구성, 융합과제 전문가 및 Team 구성 등을 중점적으로 고려해야 하고, 융합연구 관리에서는 주도적이고 창조적 리더쉽을 가진 ‘융합PM’의 선정에 초점을 맞추어야 한다. 성공적인 융합연구를 위해서는 보다 자율과 창의를 살려주는 관리 방식, 국내ㆍ외를 가리지 않고 최고의 전문가를 활용하는 평가방식으로의 전환이 필요하다.

파이프라인드 버스에서 블록 전송 방법의 구현

한종석,심원세,기안도,윤석한 대한전자공학회 1996 전자공학회논문지-B Vol.b33 No.9

Block data transfer poses a serious problem is a pipelined bus where each data transfer step is pipelined. In this paper, we describe the design and implementation of a variable data block transfer protocol for a pipelined bus of a shared-memory multiprocessor. The proposed method maintains compatibility with the existing protocol for the pipelined bus and ensures fairness and effectiveness by preventing starvation. We present flow charts of requester and responder during a block transfer in the pipelined bus that uses the proposed protocol. The proposed protocol was implemented for the TICOM-III HiPi+Bus.

감성돔, Acanthopagrus schlegeli의 종묘생산 및 성분화에 미치는 영향

한종석,김용구,라성주,윤호섭,이원교,김정,최상덕 國立 麗水大學校 環境問題硏究所 2002 環境硏究論文集 Vol.5 No.-

This study was carried out to produce the seeding of the larvae and juvenile of black sea bream, Acanthopagrus schlegeli in terms of artificial hatching, feeding behavior and growth rate in each factor. Total length of black sea bream larvae hatched was 2.57±0.35mm and after 50 days, total length was 22.08±3.74mm, 49.7% in survival rate. This research was conduced to confirm the effect of tributyltin and 2,4-dinitrophenol on the sex differentiation in Black Sea bream, Acanthopagrus schlegeli. Fish were reared of oral administration of tributyltin at 0.05, 0.5, 5㎍/g and 2,4-dinitrophenol at nominak concentration of 0.05, 0.5, 5, 50㎍/g diet from 156 days to 185 days after hatching. In the process of the differentiation until 156 days after hatching, gonads were composed testis. In contrast, 185 days after hatching, testis were composed of a number of spermatogonia and sperm duct. The female in the control in which sex differentiation of Acanthopagrus schlegeil was normally conducted was 100%. The experimental unit of estradiol-17β, it was 100% in 0.05㎍/g diet concentration, which was similar to the sex ratio of the control. And it was 100% in 0.5㎍/g diet concentration. In each experimental unit with 5, 50㎍/g diet concentrations, every individuals of them differentiated to males. About the experimental unit of tributyltin, the females were 100%, 100%, 100%, 100% and 100% in 0.05㎍/g, 0.5,㎍/g, 5㎍/g and 50㎍/g diet concentrations, respectively. About the experimental unit of 2,4-dinitrophenol, the males were 100% tn 0.05, 0.5, 5, 50㎍/g diet concentrations, respectively.

Xcent 크로스바 라우팅 스위치 구현 ( Implementation of the Xcent Crossbar Routing Woo Jong Han )

한종석,박경,심원세,한우종 대한전자공학회 1997 대한전자공학회 학술대회 Vol.1997 No.11

고속 중형 컴퓨터의 버스 정보 처리기 설계 ( A Design of the Bus Information Processing Unit the TICOM-3 )

한종석,송용호,기안도 대한전자공학회 1994 대한전자공학회 학술대회 Vol.1994 No.11

교란대기하에서 광위성 통신용 광헤테로다인 송ㆍ수신 안테나 설계에 관한 연구

한종석,최학윤 건국대학교 1995 대학원 학술논문집 Vol.41 No.-

In the international BISDN using, the laser having large bandwidth has to be used as a carrier for transmitting a lot of visual, vocal and data information. Optical intersatellite communication has now developed in theoretical and practical aspects. But the optical communication, between satellite and earth station, is hindered by atmospheric absorption, scattering and turbulence and is mainly hindered by atmospheric turbulence under clear weather condition. Also these atmospheric turbulence effect. It was supposed that 1 watt semiconductor laser having 1.55μm wavelength lardly affected by atmosperic absorption was used as an optical source and the binary FSK was used as a modulation method. The data rate of 10Gbps was used for BISDN. The (2,1,7) convolutional code compensating for influence of noise being generated at the optical channel was used in the transmitter and 8 level soft decision veterbi algorith having traceback depth of 48 was used in the receiver. In the link equation, we assumed that pointing error beam width, Θe was 0.1μrad, laser beam width, Θb was 6.58μrad and system margin was 3dB Also we assumed that the diameter of satellite antenna was 0.3 meter, and the efficiency of transmitting/receiving antenna was the typical value 0.75. By numerical simulation, we designed the antenna of earth station satisfying for the BER below 10-7 as a function of elevation angle in case of using and no using channel coding and in cases of uplink and downlink under atmospheric turbulence independently. On optical satellite downlink communication, as the elevation angle decreased, te number of optical antenna array and the diameter of receiving antenna was increased. Also, we analyzed the possibility of reducing the number of optical antenna array and the diameter of receiving antenna. On optical satellite uplink communication, the diameter of transmitting antenna had peak values unfitting to antenna design as elevation angle decreased. When the coding gain was added to, the peak values of diameter moved to the lower elevation angle with increasing the coding gain of 8[dB] is obtained, the transmitting antenna of earth station could be designed within 1 meter in the region where an elevation angle was between 25˚ and 90˚. When the diameter of satellite antenna was fixed at 0.3meter, the design values of this paper can be used for optimizing data of optical heterodyne receiver and antenna design of earth station governed by the elevation angle in the international optical satellith communication up/down link for BIDSN under turbulent atmosphere.

LDV System 에서 교란 대기 효과가 속도 측정에 미치는 영향에 관한 연구 ( A Study on the Effects of Turbulent Atmosphere on the Velocity Measurements in LDV System )

한종석,정진호,김영권 대한전자공학회 1991 대한전자공학회 학술대회 Vol.1991 No.11

셀손실과 셀오류에 따른 MPEG-2의 주관적 QoS 성능

한종석,김영권,Han, Jong-Seok,Kim, Yung-Kwon 한국전기전자학회 1999 전기전자학회논문지 Vol.3 No.1

ATM 망을 이용한 MPEG-2 화상 서비스 제공 시 망에서 발생하는 셀손실과 셀오류에 따른 서비스 품질의 저하를 사용자의 주관적인 관점에서 평가하여 CLR, CER과 MPEG-2 비디오의 주관적인 QoS 간의 관계를 연구한다. NEM모듈을 이용하여 망에 의한 셀손실과 셀오류를 정규, 지수함수 분포로 발생시켰으며 비디오 소스는 움직임 특성에 따라 드라마, 스포츠로 나누어 시험한다. 시험결과 주관적 QoS 등급5(Excellent)의 서비스 품질을 만족시키기 위한 망의 CLR 및 CER은 CLR&CER < $2{\times}10^{-7}$ 이었고, 주관적 QoS 등급4(Good)의 서비스 품질을 만족시키기 위한 망의 CLR 및 CER은 CLR&CER < $2{\times}10^{-6}$ 이었다. 본 연구결과는 ATM 망을 이용한 MPEG-2 화상 서비스 제공시 사용자가 요구하는 서비스 품질을 만족시키기 위한 망의 성능 목표치를 결정하고 망을 설계하는데 유용한 자료로서 활용할 수 있다. When providing MPEG-2 video service through the ATM network, the degradation of QoS caused by cell losses and cell errors occuring from ATM netwok was assessed by the end-users subjectively and then the relation between CLR, CER and subjective QoS of MPEG-2 video was analyzed. Cell losses and cell errors occuring from the ATM network were generated according to the normal and exponential distribution by NEM module. Video sources were divided into sports and drama by moving feature and were tested. The results of our experiments show that the excellent quality of subjective QoS grade 5 was achieved for a cell loss rate of $2{\times}10^{-7}$ and for a cell error rate of $2{\times}10^{-7}$ and the good quality of subjective QoS grade 4 was achieved for a cell loss rate of $2{\times}10^{-6}$ and for a cell error rate of $2{\times}10^{-6}$ When providing MPEC-2 video service through the ATM network, the results of our experiments will be used as valuable information to determine the network performance objectives for satisfying the QoS required by the end-users and to design the network.

B-ISDN용 광위성 통신 업링크의 앙각에 따른 송신안테나 최적설계에 관한 연구

한종석,이준구,정진호,김영권 대한전자공학회 1995 전자공학회논문지-A Vol.32 No.10

In this paper, atmospheric turbulence and absorption under clear weather condition, which affect the optical satellite up-link communication between geo-satellites and earth station, were studied. In case of the up-link communication, the received optical power is weakened by pointing loss caused by beam tilt which is the main effect of turbulent atmosphere. This pointing loss directly has relation to the diameter of optical transmitting antenna. From the inverse proportion of the pointing and spaced loss, it is the regions where the diameter of transmitting antenna increases abruptly and the efficient design of transmitting antenna is impossible. In case of using channel coding, it was shown that the peak value of diameter moved to the lower regions of elevation angle with increasing the coding gain and its width was also decreased. In case of considering both coding gain and transmission rate on the design of transmitting antenna, it was known that more coding gain was necessary as transmission rate was increased.

이질적 경제주체 동태적 일반균형 모형을 이용한 근로장려세제의 경제효과 분석

한종석,김선빈,장용성 한국계량경제학회 2021 계량경제학보 Vol.32 No.1

As the Earned Income Tax Credit(EITC) massively expanded in 2019, 20% of total households benefit from the credit. Due to this large reform, we expect that any future reform will also largely affect the aggregate economy; thus, the heterogeneous agent life cycle dynamic stochastic general equilibrium (HA-LC-DSGE) model will be widely used in future research. This paper reviews the EITC reforms in Korea since the first implementation and surveys the previous studies, examining the labor supply effects. We address why the HA-LC-DSGE model is necessary to examine the current EITC system in Korea. Then, we provide an example of the HA-LC-DSGE model with a policy simulation of the EITC expansion and explain the model's salient ingredients to understand the results. 2019년 근로장려세제 확대로 수혜가구가 전체 가구의 20%를 차지하면서 향후 이루어지는 제도 개편은 경제 전체에 미치는 효과가 커질 것으로 예상된다. 따라서 앞으로 근로장려세제의 경제적 효과를 분석하는데는 이질적인 경제주체들의 생애주기를 고려한 일반균형(HA-LC-DSGE)모형의 역할이 중요해질 것으로 판단된다. 본 논문에서는 근로장려세제 개편과정을 정리한 뒤, 근로장려세제 관련 선행연구들을 노동공급과 소득재분배에 대한 효과로 나누어 살펴보고, HA-LC-DSGE 모형을 이용한 정책효과 분석의 필요성을 제시한다. 마지막으로 근로장려세제 확대에 관한 정책실험을 통해 HA-LC-DSGE 모형을 이용한 분석방법을 예시적으로 보여주고, 모형 구축과 결과분석 시 고려해야 될 요소들을 설명한다.