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응급실을 내원한 구강악안면외과 안면골 골절 환자의 변화에 대한 비교 연구
이정훈,김용덕,신상훈,김욱규,김종렬,정인교,Lee, Jung-Hoon,Kim, Yong-Deok,Shin, Sang-Hun,Kim, Uk-Kyu,Kim, Jong-Ryoul,Chung, In-Kyo 대한악안면성형재건외과학회 2005 Maxillofacial Plastic Reconstructive Surgery Vol.27 No.2
Although there have been many clinical studies about the facial trauma in the recent as well as in the past, severity and frequency of facial trauma are reported multifarious. It seemed to be because of variety of social, cultural, and environmental factors, and the view point of investigators. In this study, we investigated about the patients visiting emergency room during recent 5 years(1999-2003), and compared with retrospective study during former 5 years(1992-1996) in Dept. OMS Pusan Univ-Hospital. We are assessed the cause, type, demographic ect. And analyzed alterations of facial bone fractures during past 2 periods. the results were as follows. The total number of patients was increased slightly. 429 patients treated for maxillofacial fractures between January 1992 and December 1996 and 466 patients treated between January 1992 and December 1996. The male-to-female ratio reduced in the second period by a factor of 0.7. Patients in the age groups of 10-19 years and 20-29 years increased by a factor of 4.2 and 7.9 in the second period. Assaults and falls in the second period decreased by a factor of 15.4 and 7.9. But, traffic accidents and slip downs in the second period increased by a factor of 6 and 6.6. The mandibular fractures(70.6%) showed the highest incidence, followed by zygomatic bone and arch fractures(7.5%), maxillary bone fractures(4.0%), and nasal bone fractures(4.0%). In the second period, the mid-face fracture was increased slightly. So, the mandibular fractures(69.0%) followed by maxillary bone fractures(12.9%), zygomatic bone and arch fractures(8.0%), nasal bone fractures(7.0%). Ramus fractures and body fractures of mandible was increased slightly in the second period.
상사의 비인격적 감독이 부하의 조직동일시와 조직일탈행동에 미치는 영향
이정훈(Lee, Jung-Hun),문지영(Moon, Jee-Young),허일무(Heo, Il-Mu),이종호(Lee, Jong-Ho) 한국산학기술학회 2014 한국산학기술학회논문지 Vol.15 No.5
본 연구의 목적은 상사의 비인격적 감독이 부하들의 조직동일시와 조직일탈행동에 미치는 영향을 연구하는 데 있다. 구체적으로,본 연구는 상사의 비인격적 감독과 부하들의 조직동일시 및 조직일탈행동 간의 관계에서 부하들의 직무만족이 매개역할을 하는지를 분석하는 것이다.국내의 다양한 기업들에 종사하는 종업원들로부터 수집한 설문자료(n=281)를 이용하 여 본 연구의 가설들을 구조방정식모형으로 검증하였다.본 연구결과에 의하면,상사의 비인격적 감독이 부하들의 직무만족 에 부(-)적인 관계가 있고 결과적으로 조직동일시에 영향을 주는 것으로 밝혀졌다.그리고 상사의 비인격적 감독은 직무만족 을 매개로하여 간접적으로 조직일탈행동에 정(+)적으로 영향을 미칠 뿐만 아니라 직접적으로 조직일탈행동에도 영향을 준다 는 것이 검증되었다.특히 본 연구는 직무만족이 상사의 비인격적 감독과 부하들의 조직동일시 및 조직일탈행동 간의 관계에 서 유의미한 매개역할을 한다는 것을 검증하였다. This study investigated the mediating role that subordinates’ job satisfaction might play in influencing the relationships between abusive supervision and subordinates’ organizational identification and workplace deviance behavior(WDB-O). With data gathered from employees(N=281) representing a wide array of organizations, structural equation modeling was used to test hypotheses. The results showed that abusive supervision is negatively related to job satisfaction and consequently organizational identification, positively associated with organizational deviance behavior through job satisfaction indirectly and has a direct effect on WDB-O.
노후 도서관 건물의 제로에너지 인증을 위한 진단 및 리모델링
이정훈(Lee, Jung-Hun),김서훈(Kim, Seo-Hoon),김종훈(Kim, Jong-Hun),류승환(Yoo, Seung-Hwan),송두삼(Song, Doo-Sam),정학근(Jeong, Hak-Geun) 한국건축친환경설비학회 2018 한국건축친환경설비학회 논문집 Vol.12 No.4
Most of domestic buildings have been over 15 years since their construction. The aged buildings tend to deteriorate thermal performance of envelopes and increase energy use. Therefore, green remodeling is carried out to improve the thermal performance of the aged buildings. There were a number of cases conducted remodeling of an existing building to improve a building performance. However, it is rare to remodel an existing building to zero energy level. In addition, there is no analysis on effects and considerations for remodeling to zero energy building level, neither standard remodeling manual for references. Therefore, it is currently being remodeled based on the knowledge and experience of the contractor. This study reviewed diagnostic and remodeling plans to remodel buildings to zero energy levels and tried to assist in the production of standard remodeling manuals. A target building constructed in 2000 was selected, and this study implemented several energy-efficiency measures: passive, active, and renewable. As a result, this study achieved 1 ++ level of the “Building Energy Saving Design Standard” and achieved zero energy building level.
순수 토크 전달을 위한 풍력발전기용 증속기 반력지지 장치
이정훈(Lee, Jung-Hun),박현용(Park, Hyun-Yong),신영호(Shin, Young-Ho),박종포(Park, Jong-Po),박정훈(Park, Jung-Hun) 한국신재생에너지학회 2009 한국신재생에너지학회 학술대회논문집 Vol.2009 No.06
Gearbox is used to converter the power with high torque and low speed into the power with low torque and high speed. Gearbox housing should be sustained to prevent rotation of gearbox itself due to the difference between input and out torque. Uneven wind causes the reaction system to have unwanted reactive loads together with predictable pure torque. These unwanted reaction loads often cause the failure of gearbox due to bad gear mesh. In this paper, pure torque reaction system is proposed to prevent the failure of gearbox. Effectiveness and functionality of the proposed reaction system are demonstrated through the numerical analysis.
전자궁적출술 후 발생한 자궁부속기 병변의 복강경 수술에 관한 임상적 고찰
이정훈 ( Jung Hun Lee ),이효원 ( Hyo Won Lee ),경민선 ( Min Sun Kyung ),정언석 ( Un Suk Jung ),이교원 ( Kyo Won Lee ),한종설 ( Jong Sul Han ),최중섭 ( Joong Sub Choi ) 대한산부인과학회 2007 Obstetrics & Gynecology Science Vol.50 No.5
Objective: To evaluate the feasibility and effectiveness of laparoscopic adnexal surgery in posthysterectomy patients and review clinical characteristics including comparison of the adhesion score of left with that of right adnexal mass. Methods: From February 2004 to January 2007, we reviewed the medical records of 23 post-hysterectomy patients who received laparoscopic adnexal surgery including age, parity, type of hysterectomy, operative indications, histopathological diagnosis, operating time, size of the adnexal mass, adhesion score, change in the hemoglobin level, hospital stay, and any complications. Results: The median age of patients was 48 years (range 35-69 years), and median parity was 2 (0-3). The median operating time was 100 minutes (range 35-180 minutes), and the median size of the adnexal mass was 7.1 cm (range 4-12 cm). The median change in hemoglobin level was 1.8 g/dL (range 0.6-4.1 g/dL). The median hospital stay was 4 days (range 3-19 days). The adhesion score was significantly higher in the left adnexal mass than in the right adnexal mass. Histopathological diagnosis included 6 cases of mucinous cystadenoma, 6 cases of functional cyst, 4 cases of hydrosalpinx, 3 cases of serous cystadenoma, 1 case of fibrothecoma, 1 case of mucinous adenofibroma, 1 case of endometrioma, and 1 case of tubo-ovarian abscess. There were no intraoperative complications or conversion to laparotomy. One case of postoperative ileus was noted. Conclusion: The skilled laparoscopic surgeon is capable of achieving successful result by performing laparoscopic surgery primarily to patients with adnexal mass for posthysterectomy patients who are expected to suffer severe adhesion. In posthysterectomy patients, left adnexal mass has more extensive adhesion than right adnexal mass, and these finding was represented as a high adhesion score of left adnexal mass.