都市人의 希望垈地 및 建坪에 關한 硏究 : 忠州地方의 獨立住宅 外部空間을 中心으로 In Case of Single Detached Housing in Chung-ju Province

朴碩鉉 忠州大學校 1982 한국교통대학교 논문집 Vol.15 No.2

As a result of inquiring, analyzing and studing the desired lot and floor area about the using of exterior space in residence for urban people, the following conclusion was accepted. The size of desiring space in the future is disclosed as a average of 91 Pyeong for the lot size and a average of 38 pyeong for the floor area. Building coverage is revealed in a regression equation of Z=83-0.34 X which shows regular decrease as the lot size is extended. People want more space about 1.5 times to the present equally both for lot and floor area.

忠州市 地域特性을 反暎한 共同住宅 計劃硏究 : 충주지역 거주자의 APT 선호특성을 중심으로

朴碩鉉,朴義權,柳顯紀,尹勝照,孫泰鎭,金基洙 충주대 2003 産業科學論文集 Vol.11 No.-

The purpose of this research is to analyze the correlation of the characteristics of dwellers and residential preference in apartment housing through the case study of 340 samples in 25 housing estates which were built in Chung-ju city The contents of this research consist of two main parts. The first part is to identify characteristics of dwellers, which might have an influence on residential preference in apartment housing. The second part is to identify the main physical elements of residential preference that can be influenced by the personal characteristics. Thus, this research will contribute to the establishment of the planning methods which increase residential preference in apartment housing, while promoting the quality of residential environment in Chung-ju city.

蓄熱지붕의 冬節期 熱性能에 關한 硏究

朴碩鉉 충주대 2004 産業科學論文集 Vol.12 No.-

This thesis discusses the modeling of the thermal roof with the air circulation system and an experimental study of the heat capacity of thermal storage roof with slab construction. In this system, the fully glazed absorber plate is put on the top of the conventional pitch roof made of massive concrete and acts as a solar air heater. Solar radiation collected into absorber is stored in the roof structure by radiation and convection so that it reduces the nighttime heating load through the roof. Another part of the energy is also transmitted to internal air drawn into the channel and is then introduced into the room. The energy balance equations to this system are solved using a finite difference method and the calculation results show a good agreement with the measured ones obtained from experiments. From the results, it is seen that the thermal storage roof with the air circulation system reduces the heat loss significantly compared with that for the conventional roof and has the instantaneous solar collection efficiency of about 25%.

SLAB構造를 갖는 蓄熱지붕의 熱性能에 關한 硏究

박석현 忠州大學校 2002 한국교통대학교 논문집 Vol.37 No.2

This paper reports on a theoretical and an experimental study of the heat capacity of thermal storage roof with slab construction. In this system, the fully glazed absorber plate is put on the top of the conventional pitch roof made of massive concrete and acts as a solar air heater. Solar radiation collected into absorber is stored in the roof structure by radiation and convection so that it reduces the nighttime heating load through the roof. Another part of the energy is also transmitted to internal air drawn into the channel and is then introduced into the room. The energy balance equations to this system are solved using a finite difference method and the calculation results show a good agreement with the measured ones obtained from our experiments. From the results, it is seen that the thermal storage roof with the air circulation system reduces the heat loss significantly compared with that for the conventional roof in winter season.

목초액 처리가 벼 생육에 미치는 영향

박석현 慶北大學校 農業開發大學院 2000 最高農業經營者課程 論文集 Vol.6 No.-

住商複合建物의 變遷過程에 關한 硏究 : A Case Study in Seoul 서울특별시를 中心으로

朴碩鉉 忠州大學校 1999 한국교통대학교 논문집 Vol.34 No.2

The research to make clear the transition process of the domesic mixed-use dwellings was obtaind such as the conclusion by the base foundation with the document and spot survey with data as the building of example object one of becomming an architecture or the constructive building. I had examined to the location sides, accommodate function sides, scale, sides and that in case of the domestic mixed-used dwellings is shown the development of a small scale to the scale sides compare with the foreign mixed-use dwellings, thereby the huge mixed use development is appearing such building and utility of superposition space as mediation space To the future, I guess that the mixed-use dwellings will lead to direction for maintain the stunning environment.

Q-NAV: 수중 무선 네트워크에서 강화학습 기반의 NAV 설정 방법

박석현,조오현 중소기업융합학회 2020 융합정보논문지 Vol.10 No.6

수중 자원 탐색 및 해양 탐사, 환경 조사 등 수중 통신에 대한 수요가 급격하게 증가하고 있다. 하지만 수중 무선 통신을 사용하기 앞서 많은 문제점을 가지고 있다. 특히 수중 무선 네트워크에서 환경적 요인으로 인해 불가피하게 발생하는 불필요한 지연 시간과 노드 거리에 따른 공간적 불평등 문제가 존재한다. 본 논문은 이러한 문제를 해결하기 위해 ALOHA-Q를 기반으로 한 새로운 NAV 설정 방법을 제안한다. 제안 방법은 NAV 값을 랜덤하게 사용하고 통신 성공, 실패 유무에 따라 보상을 측정한다. 이후 보상 값에 따라 NAV 값을 설정 한다. 수중 무선 네트워크에서 에너지와 컴퓨팅 자원을 최대한 낮게 사용하면서 NAV 값을 강화 학습을 통하여 학습하고 한다. 시뮬레이션 결과 NAV 값이 해당 환경에 적응하고 최선의 값을 선택하여 불필요한 지연 시간문제와 공간적 불평등 문제를 해결할 수 있음을 보여준다. 시뮬레이션 결과 설정한 환경 내에서 기존 NAV 설정 시간 대비 약 17.5%의 시간을 감소하는 것을 보여준다. The demand on the underwater communications is extremely increasing in searching for underwater resources, marine expedition, or environmental researches, yet there are many problems with the wireless communications because of the characteristics of the underwater environments. Especially, with the underwater wireless networks, there happen inevitable delay time and spacial inequality due to the distances between the nodes. To solve these problems, this paper suggests a new solution based on ALOHA-Q. The suggested method use random NAV value. and Environments take reward through communications success or fail. After then, The environments setting NAV value from reward. This model minimizes usage of energy and computing resources under the underwater wireless networks, and learns and setting NAV values through intense learning. The results of the simulations show that NAV values can be environmentally adopted and select best value to the circumstances, so the problems which are unnecessary delay times and spacial inequality can be solved. Result of simulations, NAV time decreasing 17.5% compared with original NAV.

都市住居用 建築物의 騷音防止 計劃에 關한 硏究

朴碩鉉 忠州大學校 1985 한국교통대학교 논문집 Vol.18 No.2

Nowadays our dwelling environments are improving in nearly every respect. However the acoustic environment seems to be one exception to this general trend in spite of its theoretical and technical development, due to the noises from the increasing number of automobiles outside and the household electric goods indoors. In designing urban residential buildings, the problem of noise became an important environmental design constraint. This study reviews the current noise performance standards in foreign countries and korea with particular reference to residential buildings. Some design strategies for noise control have been discussed with a view to improving the environmental quality of urban residential areas.

AQ-NAV: 수중통신에서 거리 추정을 이용한 강화 학습 기반 채널 접속 기법

박석현,신경섭,조오현 중소기업융합학회 2020 융합정보논문지 Vol.10 No.7

본 논문은 기존 강화학습 기반 수중통신 예약방식에서 성능 저하 요인 중 하나인 긴 학습 시간을 단축시킴으로써 에너 지 소모를 감소시킬 수 있는 향상된 채널 접속 기법을 제안한다. 수중 무선 네트워크에서 노드 간 거리를 추정하여 이를 바탕으 로 기존 강화 학습 기반 채널 접속 방법의 학습 범위의 최대, 최소치를 결정한다. 이는 기존 강화학습의 학습 범위를 줄일 수 있다. 수중 무선 네트워크 환경의 특성에 따른 거리 추정값의 오차를 고려하여 NAV 학습 범위를 고려하며, 이를 적용하기 위해 인위적으로 간섭의 크기를 변경시켜가며 학습 진행률에 대한 성능 테스트를 진행하였다. 실험 결과 기존 방법 대비 제안 된 AQ-NAV 방안의 경우, 20-40회 학습에서도 360개의 학습 배열 중 평균 340-350개 이상의 학습 배열이 학습이 진행되었 고 50회 이상 학습에서는 모든 학습 배열에 대하여 학습이 진행되었다. 반면, 기존 연구의 경우 학습이 120회 이상 진행되어도 360개의 배열 중 300-320개의 배열에 대한 학습이 진행되었다. 실험에서는 기존 대비 적은 횟수의 시도로 학습이 가능함을 보여준다. AQ-NAV가 수중 무선 네트워크에 적용될 경우 에너지 소비 절감을 통해 기존의 방안의 문제점을 완화하고 네트워 크 성능 향상을 이룰 것으로 예상된다. This work tackles the problem of conventional reinforcement learning scheme which has a relatively long training time to reduce energy consumption in underwater network. The enhanced scheme adjusts the learning range of reinforcement learning based on distance estimation. It can be reduce the scope of learning. To take account the fact that the distance estimation may not be accurate due to the underwater wireless network characteristics. this research added noise in consideration of the underwater environment. In simulation result, the proposed AQ-NAV scheme has completed learning much faster than existing method. AQ-NAV can finish the training process within less than 40 episodes. But the existing method requires more than 120 episodes. The result show that learning is possible with fewer attempts than the previous one. If AQ-NAV will be applied in Underwater Networks, It will affect energy efficiency. and It will be expected to relieved existing problem and increase network efficiency.

Audio / Video 시스템에 대한 CEBus 적응 연구 ( An implementation of the CEBus for the Audio / Video System )

박석현,이연천,김용득 대한전자공학회 1990 대한전자공학회 학술대회 Vol.1990 No.1