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금속 및 샌드위치 복합재 유도탄 구조체의 흡음 및 차음 특성에 관한 실험적 연구
이윤규,이대은,진병대,이동민,Lee, Yoon-kyu,Lee, Dae-oen,Jin, Byung-Dae,Lee, Dong-min 한국군사과학기술학회 2018 한국군사과학기술학회지 Vol.21 No.3
Recently, as the speed and performance of the launcher and the missile have been improved, it is necessary to consider the acoustic load of launching and flight in initial design step. In this paper, an experimental study on acoustic absorption and transmission characteristics of aluminium vs. sandwich composite structures were conducted. The overall noise reduction was evaluated by performing an acoustic test in the reverberation room, and the acoustic absorption and transmission loss of the structures were analyzed by conducting the sound absorption test inside the structure.
적외선 체열 촬영을 이용한 중풍칠처혈 자침시 체표온도 변화에 관한 Pilot Study
이윤규,이윤경,서보명,윤종석,김경운,최성훈,이경민,임성철,정태영,한상원,서정철,Lee, Yun-Kyu,Lee, Yoon-Kyoung,Seo, Bo-Myung,Yun, Jong-Seok,Kim, Kyung-Un,Choi, Sung-Hun,Lee, Kyung-Min,Lim, Seong-Chul,Jung, Tae-Young,Han, Sang-Won,Seo, Ju 대한약침학회 2005 Journal of pharmacopuncture Vol.8 No.3
Objectives : This study was designed to find out the effect of seven acupoints of stroke in cerebrovascular hemiplegia patients. Methods : This study was performed on 6 patients with cerebrovascular hemiplegia (test group) and 6 health persons(control group). We measured temperature of skin surface of test and control group using digital infrared thermographic imaging(D.I.T.I) after acupunture on seven acupoints of stroke. And we calculated difference of skin temperature between healthful and affected side for each groups. Results : There was significant difference in area 3 in both two groups between before and after acupuncture. But in general there Was no significant difference between two groups on thermographic change. Conclusions : This is pilot study, so further studies are required to find out the effect of seven acupoints of stroke in cerebrovascular hemiplegia patients.
일부 방사선과 재학생의 방사선사 이미지 결정에 대한 조사
이윤규,서충원,신용섭,최승환,탁은미,김보미나,김선칠,Lee, Yun Gyu,Seo, Choung Won,Shin, Yong Seob,Choi, Seung Hwan,Tak, Eun Mi,Kim, Bo Mi Na,Kim, Seon Chil 대한디지털의료영상학회 2012 대한디지털의료영상학회논문지 Vol.14 No.2
The objectives of this study were to determine radiologic technologist image of some of the majored in department of radiology and collected data of 196 students were analyzed. The results obtained from this study are as follows 1. Department of radiology selective aspect appears the many have a positive opinion but now department satisfaction dropped 2. Department of radiology educational aspect appears the important things of clinical training programs and the national exam special lectures are high 3. Radiologic technologist's futural aspect appears high the many hope to get the university hospital for job plan after graduation and have a positive opinion 4. Radiologic technologist's professional aspect appears high the many think high skilled workers as the essential prerequisites of the radiologic technologist.
이윤규,정재웅,조원호,Lee, Yoonkyoo,Jung, Jae Woong,Jo, Won Ho The Korean Fiber Society 2013 한국섬유공학회지 Vol.50 No.1
Two kinds of low-bandgap alternating copolymers composed of thiophene and benzothiadiazole were synthesized via the Stille coupling reaction. The effect of number of alkyl groups attached to oligothiophenes in the repeating unit of the copolymers on their optical, electrochemical, and photovoltaic properties was systematically investigated. One of the new polymers, poly(3,3"-dihexyl-2,2':5',2"-terthiophene-alt-2,1,3-benzothiadiazole) (P1), has better intermolecular packing than the other poly(3,3',3"-trihexyl-2,2':5',2"-terthiophene-alt-2,1,3-benzothiadiazole) (P2), and thus P1 is more beneficial for achieving high charge carrier mobility. P1-based device shows the power conversion efficiency as high as 2.19% when blended with [6,6]-phenyl-$C_{71}$-butyric acid methyl ester after thermal treatment at $170^{\circ}C$ for 30 min.