蓄熱지붕의 夏節期熱性能에 關한 硏究

박석현 忠州大學校 2003 한국교통대학교 논문집 Vol.38 No.2

This paper 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. To analysis the system, 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 and has the instantaneous solar collection efficiency of about 25%

忠北北部地域 傳統住居建築의 生態要素 分釋에 關한 硏究

박석현 忠州大學校 2009 한국교통대학교 논문집 Vol.44 No.-

Architectural characteristics deriving from climate, features, and culture of a region are expressed in traditional residential buildings. These buildings mostly accommodate with nature, and accept architecture and people as a part of natural ecology. Our ancestors made most out of a given environment, sometimes blocking deteriorating elements, and other times actively adopting nature into a house. For this study, traditional housing architecture that contains old wisdom will be analyzed. The study that 1) derives ecological elements from traditional housing architecture 2) analyzes individual style of each house and examines general orders expressed in traditional houses in Chung-buk province 3) analyzes case studies to find ecological elements in traditional houses in Chung-buk province, will explores ecological methods and orders that are reflected in traditional housing architecture. Ecological elements of traditional houses in Chung-buk province was analyzed on a micro scale, but this can be applied to other regions; by applying excellent ecological elements of traditional houses to modern architecture, quality of life could improve. This study is expected to contribute to the development of ecological architecture that receives much attention these days. Also, follow-up studies are called for to complement insufficient aspects such as practical application to modern architecture.

중국 안휘지역 주거공간의 생태적 특성에 관한 연구

박석현 한국교통대학교 2014 한국교통대학교 논문집 Vol.49 No.-

This paper is based on a residential area of the ecological history of type design, analysis and aesthetic principles and traditional housing, the natural environment and social factors, including environmental factors, in the context of dual structure typical local residential Anhui as an example, the domestic and international case studies based on the design concept of ecological succession and applied, and also the structure type and pattern of traditional housing areas to protect and utilize eco-design type, the space is inflect extended attributes. The overall design and space-related research environment to meet sustainable development targets surrounding future ecological living environment and ecological review of design concepts to be applied to the design principles and the necessary measures are such as to study.

忠北南部地域傳統住居建築의 生態要素分析에 關한 硏究

박석현 忠州大學校 2012 한국교통대학교 논문집 Vol.47 No.-

Architectural characteristics deriving from climate, features, and culture of a region are expressed in traditional residential buildings. These buildings mostly accommodate with nature, and accept architecture and people as a part of natural ecology. Our ancestors made most out of a given environment, sometimes blocking deteriorating elements, and other times actively adopting nature into a house. For this study, traditional housing architecture that contains old wisdom will be analyzed. The study that 1) derives ecological elements from traditional housing architecture 2) analyzes individual style of each house and examines general orders expressed in traditional houses in Chung-buk province 3) analyzes case studies to find ecological elements in traditional houses in Chung-buk province, will explores ecological methods and orders that are reflected in traditional housing architecture. Ecological elements of traditional houses in Chung-buk province was analyzed on a micro scale, but this can be applied to other regions; by applying excellent ecological elements of traditional houses to modern architecture, quality of life could improve. This study is expected to contribute to the development of ecological architecture that receives much attention these days. Also, follow-up studies are called for to complement insufficient aspects such as practical application to modern architecture.

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

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.

탄력과 비탄력 골반압박벨트 적용이 요통군과 비요통군에 고관절 신전근 근력과 다리들기 어려움 수준에 미치는 영향

박석현,김기원,김병태 대전대학교 기초과학연구소 2019 自然科學 Vol.30 No.-

This study compared the effects of two types of pelvic compression belts on hip extensor muscle strength and leg raise heaviness in individuals with and without low back pain. Subjects with (n=15) and without low back pain (n=45) were enrolled in this study. The degree of subjectively perceived heaviness during prone hip extension (PHE) test was measured on a 6-point scale. The isometric strength of the hip extensor muscles was measured with 20°of PHE and the knee in full extension. Muscle strength was measured before the use of the pelvic compression belt, and then after the use of elastic and non-elastic pelvic compression belts in random order. All measurements were made on the side that the subject perceived as having greater difficulty during PHE. Using descriptive analysis and repeated-measures analysis of variance, we compared the effects of pelvic compression belt use on hip extensor muscle strength in individuals with and without low back pain. There were no significant differences in hip extensor strength and leg raise heaviness level between subjects with and without low back pain with the use of the two types of pelvic compression belts. With the use of the two types of pelvic compression belts, hip extensor strength was significantly increased in both subjects (p<.01). There was no significant difference between the two types of compression belts concerning the effect on hip extensor strength. Both elastic and non-elastic pelvic compression belts helped to improve hip extensor strength in individuals with low back pain

忠州 鄕校의 外部空間에 關한 考察

朴碩鉉 충주대학교 1979 한국교통대학교 논문집 Vol.12 No.2

This thesis has an object to know about our traditonal style of architecture, lay-cut of korean building and space formation by studing of the exterior space of the confusian school in chung-ju. The cinfucion school was educational facility of higher talents as hall of confucion culture, and the center of education in local government through the era of Yi Dynasty. This chung-ju confucian school was moved to a present place because it was destructed by fire during the Im Jin Wai Ran, and as a result of that it could not help escaping destruction in order of architectural space. This result of the study is summarized as follows: The Chung-ju confucian school was remover, reconstructed and repaired. Therefore confucian school building. Two parts of spaces are coexisted on the character of exterior space in Confucian School. Those are the teaching area as practical space and the Confucian shrine as divine space. The form and composition of the exterior space consist of sguares and rectangles, and they have a main axis from south to north. This is the basic factor of the spacial design.

지구 온난화와 건축의 변화에 관한 연구

박석현 忠州大學校 2005 한국교통대학교 논문집 Vol.40 No.2

Even though the subjects of energy conservation and global warming have been studied since the 70s, increasing populations and their urbanization over the past 30 years have continued to consume vast amounts of energy. The global warming issue, caused by the excess discharge of carbon dioxide, needs to be solved through decreasing the consumption of energy. In order to succeed in the reduction of energy con sumed by most structures, architectural standards will have to evolve from being primarily focused on design and expand into the construction and operation of structures. In addition to this process, there needs to be an increase in the use of natural energy sources, recycling and the improvement of efficiency and durability of construction materials in new structures as well as the upgrading of existing structures.

建築物에 있어서 結露防止에 關한 硏究

朴碩鉉 충주대학교 1992 한국교통대학교 논문집 Vol.26 No.-

The counterplans to condensation occurring on building in winter can be divided into the following results. 1. The preventive method of surface condensation is to make enough heat insulation, vapourproof of inner surface on high temperature and vapourproof on low humidity. 2. On prevention of inner condensation needs vapour barrier of heat insulator to the side of high humidity. 3. On heating time. to take the air is the best way to the prevention of condensation for decreased relative humidity increasing by the vapour produced through the air in room. 4. To make efficient use of enclosed heating system(FF TYPE) with on vapouring in room is best way to prevent the condensation.