http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
건식이중바닥구조와 하부 천장구조의 조합에 따른 바닥충격음 평가
연준오(Yeon, Jun-Oh),김명준(Kim, Myung-Jun),김경우(Kim, Kyoung-Woo),양관섭(Yang, Kwan-Seop) 한국건축친환경설비학회 2016 한국건축친환경설비학회 논문집 Vol.10 No.3
In the present study, floor impact sound reductions by floor structure and ceiling were investigated. Upper layer of a dry double floating floor was made of recycled materials. Also, steel as well wooden beams were applied to the dry double floating floor then impact sound insulations of them were measured. It was found that light-weight impact sound insulation of the floor with steel beam was improved by 4 dB (L"n,AW) compared to the floor with wooden beam. Moreover, heavy-weight impact sound insulations of the floor with steel beam were enhanced by 3 dB and 4 dB (L"i,Fmax,AW), respectively using bang machine and rubber ball. As a second experiment, the impacts of ceiling aperture on the floor impact sounds were measured while the steel beams were installed to the dry double floating floor. The light-weight impact sound insulation was found to be best, 32 dB when apertures were applied to perimeters of coffered ceiling. The heavy-weight impact sound insulation measured by the bang machine was 48 dB when the apertures were installed to moldings. In contrast, two experimental cases without any aperture and apertures on perimeters of the coffered ceiling showed best heavy-weight impact sound insulations of the rubber ball (40 dB). Lastly, influences of impact positions on single number ratings were investigated. It was observed that there was not a significant relationship between impact positions and single number ratings.
공동주택 거주자 실충격력을 고려한 바닥 매트류의 충격음 저감량 평가
연준오,김경우,김흥식,김명준 한국건축친환경설비학회 2019 한국건축친환경설비학회 논문집 Vol.13 No.5
In this study, the real-impact force (height of drop of rubber ball 40 cm) reduction performance was evaluated in the reverberation chamber and in the 210 mm bare slab of the apartment house, depending on the application of the floor surface finishing material. There are a total of 20 types of mats made of single, composite materials. In addition, the impact sound was reduced by residents of apartment housings during installation of floor surface finishing materials, focusing on the 125 Hz and 250 Hz frequency bands. The reduction performance of about 10 dB in the PE structure was shown when applying a single structure of mats in the reverberation chamber. It was also shown that the reduction in noise perceived range is obtained from Case 6 to 9 (PE 20 mm ~ PE 50 mm), a floor surface finishing material consisting of PE. In the composite structure, it was shown that Case 2, 3, 4 (PE 20 mm + PU 10 mm, PE 10 mm + PU 20 mm, PE 20 mm + PU 30 mm) satisfies the range 3 dB of impact reduction. Impact sound reduction performance (height of drop of rubber ball 40 cm) at bare slab in apartment buildings was found to be over 7 dB in Case 9(PE 50 mm) in single structure. In addition, it was found that the impact sound recognition range of 3 dB is secured when applying the single structure of the floor surface finish in case 6, 7, 8, 9(PE 20 mm ~ PE 50 mm) and the composite structure Case 2, 3 (PE 20 mm + PU 10 mm, PE 10 mm + PU 20 mm).
『지체․중복․건강장애연구』의 연구동향 및 지식구조: 키워드 네트워크 분석을 활용하여
연준모 한국지체.중복.건강장애교육학회 2018 지체.중복.건강장애연구 Vol.61 No.3
Purpose: The purpose of this study was to examine the research trends and knowledge structure of 『Korean Journal of Physical, Multiple, and Health Disabilities』. Method: For this research purpose, the studies published in 『Korean Journal of Physical, Multiple and Health Disabilities』were analyzed. Specifically, the studies published from 2002 to 2018 were analyzed with keyword network analysis using KrKwic and UCINET 6.0 program. Results: The results were as follows. First, the most frequently used keywords were cerebral palsy and physical disability. Second, the ranking of the keywords were changed according to the three periods, 1st period(2002~2007), 2nd period (2008~2012), and 3rd period(2013~2018). Finally, the keywords with highest centrality were ‘Augmentative and Alternative Communication (AAC)’ and ‘career education’. In addition, these keywords with high centrality varied according to the three periods. Conclusion: The results of this study were suggested. Finally, the limitations of this study and future research direction were discussed. 연구목적: 본 연구의 목적은 『지체․중복․건강장애연구』의 연구동향과 지적구조를 탐색하는 것이다. 연구방법: 이를 위하여『지체․중복․건강장애연구』에 게재된 논문들을 대상으로 분석을 실시하였다. 2002년부터 2018년까지 학술지에 게재되었던 논문들이 분석에 포함되었으며, 키워드 네트워크 분석은 주로 KrKwic와 UNICET 6.0 프로그램을 활용하여 이루어졌다. 연구결과: 본 연구의 결과는 다음과 같다. 첫째, 출현 빈도를 기준으로 하였을 때 「지체․중복․건강장애연구」에서의 나타난 주요 키워드들은 ‘뇌성마비’, ‘지체장애’ 등이었다. 둘째, 출현 빈도가 높은 주요 키워드들은 시기에 따라 변화가 나타났다. 즉 1기(2002년∼2007년), 2기 (2008년∼2012년), 3기(2013∼2018년)를 거치는 동안 주요 키워드의 순위에는 변화가 나타났다. 마지막으로, 키워드 네트워크 분석을 통하여 높은 중심성을 지닌 것으로 밝혀진 키워드로는 ‘보완대체의사소통’, ‘직업 및 진로교육’ 등이 있었으며, 이들은 높은 출현빈도를 보였던 키워드들과 상이하였다. 그리고 이러한 높은 중심성을 지닌 키워드들 역시 각 시기별로 서로 다르게 나타났다. 결론: 마지막으로 본 연구의 결과를 요약적으로 제시하고, 연구에서의 제한점과 앞으로의 연구 방향에 대하여 논의하였다.
일반 전동차량 네트워크의 노드간 MASTER 전환 알고리즘 구현
연준상,양오 한국반도체디스플레이기술학회 2017 반도체디스플레이기술학회지 Vol.16 No.3
This paper presents the implementation for the master changing algorithm between nodes in a general electric vehicle. The packet processing method based on the unique network method of an electric vehicle is that the method of processing a communication packet has the priority from the node of a vehicle installed at both ends. An important factor in deciding master or slave in a train is that the request data, the status data, and transmits or control codes of sub-devices are controlled from the node which master becomes. If the request data or the status data is transmitted from the non- master side, it is very important that only one of the devices of both stages be master since the data of the request data may collide with each other. This paper proposes an algorithm to select master or slave depending on which vehicle is started first, which node is master or slave, and whether the vehicle key is operation. Finally experimental results show the stable performance and effectiveness of the proposed algorithm
연준오(Junoh Yeon),김경우(Kyoungwoo Kim),최현중(Hyunjuong Choi),양관섭(Kwanseop Yang),김경호(Kyungho Kim) 한국소음진동공학회 2012 한국소음진동공학회 학술대회논문집 Vol.2012 No.10
The 1st assessment (performance test) was applied to assure the floor impact sound performance for developing the dry double- floor with the change of rubber hardness of the upper panels support and the ceiling structure of the sub-floor. Depends on the change of the rubber hardness in substructure, the heavy-weight sound impact value is improved up to 3 dB, and the light-weight sound impact value is moved up to 21 dB, comparing with the bare-slab. Also, the improved value for the floor impact sound conjugating with the sub-floors ceiling was 5dB. Based on this result, the 2nd assessment (performance test) was made the state that the rubber hardness of the sub-floor support was ranged between 50 and 70 for considering the stability of walking patients. In addition to this process, the assessment was carried out with a variety of ceiling structure applied to the dry doublefloor structure with the air flow system on the sub-floors ceiling. The result for the 2nd assessment proved that TYPE-11 had the better sound reduction performance in the heavy-weight impact sound test than other types, and also for the light-weight impact sound TYPE-11 had the 29 dB sound reduction performance overall. Henceforth, based on the result the research for the sound reduction performance from the floor impact sound shall be ongoing process as well as the development of a double-dry floor and a sound reduction ceiling to suitable on the field.