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구개측 굴곡파절이 있는 상악 구치의 교합면 마모 양상에 대한 연구
송주헌,김희중,이경제 대한턱관절교합학회 2019 구강회복응용과학지 Vol.35 No.3
Purpose: Aims to analyze the occlusal wear patterns in maxillary posterior teeth with palatal side abfractions and study the association between occlusal force and abfractions. Materials and Methods: This study was conducted in a total of 308 teeth from 148 patients with palatal side abfractions in maxillary posterior teeth. The occlusal wears in maxillary premolars and molars with palatal side abfractions were classified and recorded. The classification was done by type of teeth, age, and gender, and in order to evaluate the statistical significance between groups, chi-square test was conducted (α = 0.05). Results: Palatal side abfractions in maxillary posterior teeth were observed at the highest frequency in the 1st molars, and in all teeth with palatal side abfractions, more than one occlusal wear was observed. In classification by type of teeth, by age, and by gender, the occlusal wears in teeth with palatal side abfractions were observed at high frequency in cuspal inclined plane, central fossa, and marginal ridge, and there was a statistical significance (P < 0.05). Conclusion: Palatal side abfractions were observed at the highest frequency in maxillary 1st molars, and in all maxillary posterior teeth where palatal side abfractions were found, the occlusal wears were observed. And the occlusal wears were observed at high frequency in cuspal inclined plane, central fossa and marginal ridge. Such results show that abfraction is associated with occlusal force.
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T-Scan system을 이용한 하악 측방운동 시 교합접촉 분석
송주헌,주세진,이호선,강동완,이경제,Song, Joo-Hun,Joo, Se-Jin,Lee, Ho-Sun,Kang, Dong-Wan,Lee, Gyeong-Je 대한치과보철학회 2015 대한치과보철학회지 Vol.53 No.2
목적: 교합접촉 분석에 대한 연구는 외국인을 대상으로 이루어져왔다. 이번 연구에서는 T-Scan을 이용하여 하악 측방운동시 교합접촉 분석을 통해 한국인의 교합 양상을 파악해보고자 한다. 재료 및 방법: 87명을 대상으로 T-Scan을 이용하여 하악 측방운동시 교합접촉을 분석하였다. 최대교두감합위에서 측방으로 3 mm범위까지 교합접촉을 측정하였으며, 최대교두감합위, 우측방운동, 좌측방운동을 각각 3회씩 측정하였다. 교합접촉은 thin metal foil을 이용하여 재확인하였다. 결과는 균형측 교합접촉 고려하지 않은 경우와 고려한 경우로 나누어 정리하였다. 결과: 하악 측방운동시 균형측 접촉 고려 유무에 따라 결과에서 많은 차이가 관찰되었으며, 두가지 분류 모두에서 군기능유도가 가장 우세하게 나타났다. 작업측에서는 견치에서 가장 많은 접촉빈도가 관찰되었으며, 견치에서 구치부로 멀어질수록 접촉빈도는 감소하는 양상을 보였다. 균형측에서는 제 2대구치에서 압도적으로 많은 빈도로 관찰되었다. 성별에 따른 균형측 접촉 빈도는 여성에서 더 높은 균형측 교합접촉이 관찰되었으며 이는 통계적으로 유의성이 있었다(${\alpha}$=.05). 결론: 전방유도의 양상 중 군기능유도가 가장 우세하게 나타났다. 작업측에서는 견치에서 가장 높은 접촉빈도가 관찰되었으며, 균형측에서는 제 2 대구치에서 가장 높은 접촉빈도가 관찰되었다. Purpose: Most of the former studies about the occlusal contact patterns during the mandibular movement focused on foreigner. The purpose of this study is analyzing the occlusal contacts of young Koreans by using T-Scan system. Materials and methods: The sample size was 87 and the occlusal contacts of each right and left lateral movements were measured from the maximum intercuspation to the 3mm excursive position for three times respectively. All of the occlusal contacts were double checked through the thin metal foil. The results were categorized as two; 1) considering occlusal contact patterns on working side only, 2) considering occlusal contact patterns on working and nonworking sides. Results: The results showed that the nonworking side occlusal contacts play major roles in the lateral mandibular movement. In both cases of considering with and without the nonworking side occlusal contacts, the group function was the most prevalent. In the working side, the contacts were the most frequent in canine and the frequency of contacts was decreased as the distance was increased from canine to molar. In the nonworking side, the contacts were the most frequent in second molar. And the gender factor was statistically significant (${\alpha}$=.05), as females have more nonworking side occlusal contacts in this study. Conclusion: Among the three factors of anterior guidance, the group function was the most dominant factor. The analysis of 87 samples showed that canine contact was the most frequent in the working side and second molar contact was the most common in the nonworking side.
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MANAGEMENT TREND - 지속가능경영에 기여하는 HR
송주헌,Song, Ju-Heon 한국시멘트협회 2013 시멘트 Vol.198 No.-
지속가능경영에 대한 기업들의 관심과 노력이 증가하고 있는 가운데, 구성원들에게 지속가능경영을 내재화 시키고 보다 장기적 관점의 인적자원관리로 기업의 지속적 성장에 기여하는 '지속가능 인적자원관리'(Sustainable Human Resource Management)가 새롭게 주목 받고 있다. 여기서는 LG경제연구원 원지현 선임연구원의 '지속가능경영에 기여하는 HR' 보고서를 통해 글로벌 기업들의 사례를 분석하고 지속가능 HRM의 특징과 적용 범위, 효과에 대해 알아본다.
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송주헌,김호찬,강제구,노동환 대한이비인후과학회 부산,울산,경남 지부회 2015 임상이비인후과 Vol.26 No.2
Middle East Respiratory Syndrome (MERS) caused by a single-stranded, positive-sense RNA beta-coronavirus (MERS-CoV) was first isolated in Jeddah, Saudi Arabia. Approximately 180 cases of MERS have occurred in a recent Korean outbreak. Clinical features vary from asymptomatic infection to severe pneumonia with acute respiratory distress syndrome and/or multiorgan failure. To control acute respiratory failure, endotracheal intubation is frequently required; in most patients with prolonged endotracheal intubation, tracheotomy is mandatory to appropriately control the airways and to avoid serious complications of extended intubation. Tracheotomy can be a high-risk procedure because it generates profuse droplets and aerosols, which in turn promote interpersonal dissemination of the virus. Herein, we report the first tracheotomy case in a Korean MERS patient to describe appropriate airway management and protection of medical staff.
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송주헌,소수현,임희창 대한조선학회 2016 International Journal of Naval Architecture and Oc Vol.8 No.4
Given the rapid progress made in understanding the dynamics of an offshore floating body in an ocean environment, the present study aimed to simulate ocean waves in a small-sized wave flume and to observe the motion of a cylindrical floating body placed in an offshore environment. To generate regular ocean waves in a wave flume, we combined a wave generator and a wave absorber. In addition, to precisely visualise the oscillation of the body, a set of light-emitting diode illuminators and a high-speed charge-coupled device camera were installed in the flume. This study also focuses on the spectral analysis of the movement of the floating body. The wave generator and absorbers worked well to simulate stable regular waves. In addition, the simulated waves agreed well with the plane waves predicted by shallow-water theory. As the period of the oncoming waves changed, the movement of the floating body was substantially different when tethered to a tension-leg mooring cable. In particular, when connected to the tension-leg mooring cable, the natural frequency of the floating body appeared suddenly at 0.391 Hz as the wave period increased.
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MANAGEMENT TREND - 구성원들의 부정적 감정, 전염성 높다
송주헌,Song, Ju-Heon 한국시멘트협회 2012 시멘트 Vol.195 No.-
사람의 감정은 전염된다는 특성이 있다. 특히 부정적인 감정의 경우 그 전염성이 강하다. 조직 내에서 부정적인 감정이 형성되고 확산되면 성과 저하 등 조직 내 악영향을 미칠 수 있다. 따라서 조직 내 부정적인 감정의 근원지를 찾아내고 확산을 막기 위한 다양한 노력을 기울일 필요가 있다.
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