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신경회로망 예측기법을 결합한 Dynamic Rate Leaky Bucket 알고리즘의 구현
이두헌,신요안,김영한 한국통신학회 1997 韓國通信學會論文誌 Vol.22 No.2
The advent of B-ISDN using ATM(asynchronous transfer mode) made possible a variety of new multimedia services, however it also created a problem of congestion control due to bursty nature of various traffic sources. To tackle this problem, UPC/NPC(user parameter control/network parameter control) have been actively studied and DRLB(dynamic rate leaky bucket) algorithm, in which the token generation rate is changed according to states of data source andbuffer occupancy, is a good example of the UPC/NPC. However, the DRLB algorithm has drawbacks of low efficiency and difficult real-time implementation for bursty traffic sources because the determination of token generation rate in the algorithm is based on the present state of network. In this paper, we propose a more plastic and effective congestion control algorithm by combining the DRLB algorithm and neural network based prediction to remedy the drawbacks of the DRLB algorithm, and verify the efficacy of the proposed method by computer simulations.
다중 서비스 트래픽을 위한 신경회로망 기반의 ATM 호 수락 제어
이두헌,신요안,김영한 한국통신학회 1996 韓國通信學會論文誌 Vol.21 No.8
This paper proposed a new approach to adaptive call admission control based on a neural network for multiple service classes with different quality of service (QoS) in the ATM-based Broadband Integrated Services Digital Networks. the proposed method extend Hiramatsu's neural network based "leaky pattern table" method for the single QoS[1, 2, 3] to deal with multiple services with different QoS by constructing multiple pattern tables based on each service's acceptance or rejection at the call set-up requests, and by simultaneously controlling each service's QoS according to the target QoS of the service and the trunk capacity. Computer simulation results on two service classes with different traffic characteristics and different cell loss rates as QoS, highlight good performance and effectiveness of the proposed call admission controller for multiple service classes.e classes.
이두헌,박희성 대한토목학회 2016 대한토목학회논문집 Vol.36 No.2
The post-evaluation system after construction projects can evaluate estimates of use demand, project cost, and project scheduleestimated in the planning phase of construction projects in public sector. Thus, it was introduced in 2000 for the purpose of reductionin future errors during similar constructions by project orderer by referring the post-evaluation results. However, many barriers to thepost-evaluation system after construction projects have been reported due to evaluation systems that lack objectivity and reliability andlack of main bodies that utilize the system. Thus, this study derived implications for improvements of the post-evaluation system inKorea by benchmarking building project evaluation system and management as well as utilization systems of developed nations. Thenthis study conducted a survey with experts who have experienced activities in the post-evaluation committee and members ofpost-evaluation for public project owners. Therefore it identified the need of installation of specialized post-evaluation institutions aswell as functions and work tasks to be taken by specialized institutions. Based on the analysis results, this paper provided revision draftsof related legislations and guidelines to be effective in post-evaluation. Through the study results, many trial and errors can be reducedin similar projects in the future by performing in-depth analysis on large-scale construction projects and repeatedly applied buildingproject practices can be improved to raise technical competitiveness if the specialized institution is installed. 건설공사 사후평가 제도는 공공건설사업의 계획단계에서 예측한 이용수요·사업비·사업기간 등에 대한 예측치를 준공 후에 평가함으로써, 차후유사사업 추진 시 그 평가결과를 참고하여 발주청의 시행착오를 줄이기 위한 목적으로 2000년도에 도입되었다. 그러나 객관성 및 신뢰성이 결여된 평가 수행체계 및 부재한 활용주체로 인하여 건설공사 사후평가 제도 정착 및 활성화에 걸림돌이 되고 있다. 이에 본 연구에서는 선진외국의 건설사업 평가수행 및 관리․활용 체계를 벤치마킹하여 국내 사후평가 체계 개선을 위한 시사점을 도출하였고, 공공 발주청 사후평가 담당자및 사후평가위원회 활동경험이 있는 전문가를 대상으로 설문조사를 실시하여 사후평가 전문기관 설치의 필요성 및 전문기관에서 담당해야 할기능 및 업무내용 등을 도출하였다. 도출된 분석결과를 바탕으로 최종적으로 본 연구결과가 실효성이 확보될 수 있도록 관련 법령 및 지침 개정안을 마련하였다. 본 연구 결과를 통해 향후 전문기관이 설치된다면 대규모 건설사업 시행과정을 면밀히 분석하여 차후 유사사업 수행 시에 많은시행착오를 줄일 수 있으며, 관행적․반복적으로 적용되는 건설사업 수행방식을 개선하여 기술경쟁력이 제고될 수 있다.
이두헌 한국프랑스문화학회 2006 프랑스문화연구 Vol.13 No.-
Une étude sur l’énallage des pronoms personnels en français Lee, Doo-Hun L’énallage est un type particulier de l’emploi du langage, qui vise à atteindre un but communicatif particulier. S’il se révèle attirant, pour ce qui est notamment des pronoms personnels, c’est qu’il permet de mettre en évidence l’importance d’un aspect trop souvent délaissé ou sous-estimé sous l’emprise de la référence : la relation. Avec le pronom personnel nous, on a pu constater que la notion de solidarité y règne et cela dans toutes les personnes sur lesquelles elle s’étend : sans parler de nous au pluriel ou de “nounoiement” où elle a sa place, la solidarité se joue encore d’une telle manière que nous se substitue tantôt à la seconde personne, tantôt à la troisième personne en produisant par là des effets très variés. Non moins frappant est le fait que la troisième personne, souvent pensée comme “non-personne” et donc exclue du rapport allocutif, se substitue à l’allocutaire grâce, par ailleurs, aux caractères qui lui sont propres : l’exclusion et l’absence. Tous ces faits de langue, qui seront pour certains dérisoires ou un vrai “casse-tête”, font indubitablement partie de la richesse de la langue, en l’occurrence du français.