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반복하중을 받는 H형강 유공보의 소성 및 국부좌굴 거동
이은택,김철환,오우훈,Lee, Eun Taek,Kim, Cheol Hwan,Oh, Woo Hun 한국강구조학회 2003 韓國鋼構造學會 論文集 Vol.15 No.3
유공부재의 탄성 및 비탄성 거동을 나타내기 위하여 많은 연구가 이루어져왔으나 단축하중상태의 연구에 집중되어있는 실정이다. 또한, 국부좌굴을 고려한 유공보 설계에 대한 식들은 일반적으로 Darwin의 연구결과를 토대로 하여 사용되고 있으나, 그 연구결과가 단조하중에 집중되어있어 반복하중과 국부좌굴을 고려한 연구의 필요성이 제기되었다. 따라서, 본 연구에서는 반복하중상태에서의 7개의 원형유공보에 대한 실험이 행해졌다. 실험체의 형상 및 변수는 Darwin에 의해 제안된 설계과정에 기초를 두었다. 본 실험을 통하여, 기존 설계식의 타당성, 소성힌지의 영향, 유공 부분의 반복국부좌굴의 영향 등이 관찰 연구되었다. Many researches have been conducted to describe the elastic and inelastic behavior of H-shaped beams with web openings, and were generally concentrated on the uniaxial loading conditions. With previous research results, the formulae for the design of beams with web openings, considering local buckling, have been proposed by Darwin. Although the formulae are so simple and useful to apply to real situations, it needs more research on cyclic loading conditions. In this experimental study, a total of seven H-shaped beams with circular web openings under cyclic loading conditions were investigated. The dimension criteria were based on the formulae proposed by Darwin. The suitability of the existing design formulae, the effects of plastic hinges on beams with web openings, and the local bucking around the web openings to the beam strength under cyclic loading were also investigated through by the observations of the behavior of these beams with various dimensional openings.
지식산업센터와 일반산업단지의 만족도 및 영향요인에 관한 연구
권오규(Kwon, Oh-Kyu),박혜원(Park, Hae-Won),강은택(Kang, Eun-Taek) 한국부동산산업학회 2015 부동산산업연구 Vol.1 No.1
In Non-Seoul metropolitan areas it has been devoting a lot of effort for the economy. In this respect, the region has been operating to build a knowledge industry center. This study was carried out two largely empirical analysis. First, we compared the knowledge industry center and general industrial complex of satisfaction. Second, we analyze the factors affecting the rent of tenants. Analysis was conducted a survey of Daegu, Gwangju, Busan. The Analysis results, knowledge industry center were analyzed as lower satisfaction than general industrial complex. In addition, hedonic analysis using the model, the knowledge industry center and general industrial complex in the analysis results showed that different. Low rent of knowledge industry center appeared to be associated with satisfaction. These results are expected to be useful to establish a policy.
건강운동 참여한 성인의 주관적 운동능력 인지와 열정, 운동 자기효능감, 지각된 건강상태 간의 관계
이석인(Suk In Lee),오은택(Eun Taek Oh),백광(Kwang Baik) 한국사회체육학회 2011 한국사회체육학회지 Vol.0 No.43
The purpose of this study was to examine the effect of the subjective exercise ability and passion on exercise self-efficacy and perceived health in life sport participants. To process the data, this research conducted exploratory/confirmatory factor analysis, 2X2 MANOVA, reliability. correlation analysis, hierarchical multiple regression with SPSS 15.0 program and AMOS 6.0. The results of this research were as followings. First, this study didn`t find the differences between exercise self-efficacy and perceived health by subjective exercise ability in life sport participants. Also, Participants in the higher harmonious passion reported higher levels of exercise self-efficacy than did those in the low harmonious passion. Participants in the higher obsessive passion and harmonious passion reported higher levels of exercise self-efficacy and perceived health. Second, Harmonious passion of life sport participants had significantly positive influence on the exercise self-efficacy and perceived health.
중장년 여가운동 참여자의 건강신념이 건강실천 운동행위에 미치는 영향
이석인(Suk In Lee),오은택(Eun Taek Oh) 한국여가레크리에이션학회 2010 한국여가레크리에이션학회지 Vol.34 No.3
The purpose of this study was to identify the effect of health belief on leisure sports` continuous participation as health-promoting behaviors in middle aged group. The subjects for this study were 182 participants of leisure sports. In the analysis, SPSS windows 15.0 and AMOS 7.0 program was used to conduct descriptive statistics analysis, exploratory factor/confirmative factor analysis, MANOVA, hierarchical multiple regression, correlation analysis and reliability analysis. The results were as follows. First, gender of leisure sports` participants had significantly effects on perceived susceptibility and perceived benefit. Women who participated leisure sport in middle of aged group showed significantly higher perceived susceptibility and perceived benefit compared with men who participated leisure sports. Second, perceived susceptibility and perceived severity in middle of aged group had significantly positive influence on leisure sports` continuous participation. Also, perceived barrier in middle of aged group had significantly negative influence on leisure sports` continuous participation.
이은택,민승기,오승환,이동근 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.1
Subcutaneous air emphysema is a relatively uncommon phenomenon. It has been reported in both the medical and dental literature following such various procedures as rectal biopsy, nasogastric intubation, radical neck dissection, tonsillectomy, adenoidectomy, root canal treatment, dental restoration and extraction of maxillary and mandibular teeth. The most common cause involves extraction of mandibular third molar. Subcutaneous emphysema of the head, neck and thorax is a swelling caused by introduction of air into the space of the connective tissue. The clinical signs are local swelling, tenting of the skin, and crepitation on palpation. In extreme casesk, air has been reported to pass through the masticatory space into the parapharyngeal and retropharyngeal space, and penetrate into the mediastinum. If the inflowing air contains bacteria, serious infection may ensue. The first case of subcutaneous emphysema associated with a dental procedure was first reported in 1900. This emphysema is a often limited only to the spaces of head and neck, but also can involve deeper structure. This case is diffuse subcutaneous emphysema following maxillary third molar extraction with a high-speed drill.
민승기,이은택,오승환,이동근,고세욱,송종민,최성림 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.3
The Orbital fracture which is often combined with midface fracture can cause decreased visual acuity, limitation of eyeball movement, diplopia, enophthalmos, etc. Traumatic orbital fracture causes change of orbital volume, results in diplopia and enophthalmos thus, accurate repositioning of displaced bone and reconstruction of orbital defect with autogenous materials(cranial, rib, iliac bone, cartilage and fascia lata) or alloplastic materials(gelatin film, polyglactin mesh, methylmethacrylate, Teflon, silicone, Supermid, hydroxyapatite and metal). The key point of reconstruction of orbit is accurate repositioning of displaced orbital floor, lateral, medial orbital wall and sufficient bonegraft in anatomical defect. As this cases, we obtained good results through transconjunctival and coronal approach who were required orbital reconstruction. Also, we accurately diagnosed orbital fracture with C.T., 3D model and good result for orbital reconstruction with sufficient parietal block bone graft during average 16.8 months follow-up.
중안면부 골절이 하악 과두 골절에 미치는 영향에 관한 임상적 연구
민승기,이동근,오승환,이은택,조이수,김종구 大韓顎顔面成形再建外科學會 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.6
This is clinico-statistical & retrospective study of 30 patients with only unilateral mandibular condyle fracture and combined with 24 midface fracture patients who were treated with open reduction in Wonkwang University Dental Hospital during the period 1993 to 2000. The results were as follows : 1. In mandibular condyle fracture combined with midface fracture, the most incident type is associated with zygomaticomaxillary complex fracture and level Ⅳ of mandibular condyle fracture combined with ZMC fracture is the most related(33.32%). 2. In the period of intermaxillary fixation, unilateral mandibular condyle fracture group (9.8 days) is shorter than combined with midface fracture group (15.3 days), but no statistical difference between two groups(p.>0.05). 3. In the mouth opening recovery, unilateral mandibular condyle fracture group is faster than combined with midface fracture group in post-operative 1 month, but no significant difference between two-groups after 3 months postoperatively (p>0.05). 4. In two-groups, treatment method is almost open reduction with internal fixation(ORIF) and overall 25% temporary complications were shown, but little lower incidence in unilateral condylar fracture group.