한국인 직무 스트레스 측정도구의 개발 및 표준화

장세진,고상백,강동묵,김성아,강명근,이철갑,정진주,조정진,손미아,채창호,김정원,김정일,김형수,노상철,박재범,우종민,김수영,김정연,하미나,박정선,이경용,김형렬,공정옥,김인아,김정수,박준호,현숙정,손동국 大韓産業醫學會 2005 대한직업환경의학회지 Vol.17 No.4

Background and Purposes: Over the past three decades, numerous studies performed in Korea have reported that job stress is a determinant risk factor for chronic diseases and work disability. Every society has its own culture and occupational climate particular to their organizations, and hence experiences different occupational stress. An occupational stress measurement tool therefore needs to be developed to estimate it objectively. The purpose of this study is to develop and standardize the Korean Occupational Stress Scale (KOSS) which is considered to be unique and specific occupational stressors in Korean employees. Subjects and Methods: Data were obtained from the National Study for Development and Standardization of Occupational Stress (NSDSOS Project: 2002-2004). A total of 12,631 employees from a nationwide sample proportional to the Korean Standard Industrial Classification and the Korean Standard Occupational Classification were administered. The KOSS was developed for 2 years (2002-2004). In the first year, we collected 255 items from the most popular job stress measurement tools such as JCQ, ERI, NIOSH and OSI, and 44 items derived from the a qualitative study (depth interview). Forty-three items of KOSS, in the second year, were retained for use in the final version of the KOSS by using Delphi and factor analysis. Items were scored using conventional 1-2-3-4 Likert scores for the response categories. Results: We developed eight subscales by using factor analysis and validation process: physical environment (3 items), job demand (8 items), insufficient job control (5 items), interpersonal conflict (4 items), job insecurity (6 items), organizational system (7 items), lack of reward (6 items), and occupational climate (4 items). Together they explained 50.0% of total variance. Internal consistency alpha scores were ranged from 0.51 to 0.82. Twenty-four items of the short form of the KOSS (KOSS-SF) were also developed to estimate job stress in the work setting. Because the levels of the subscales of occupational stress were gender dependent, gender-specific standard norms for both the 43-item full version and the 24-item short form using a quartile for the subscales of KOSS were presented. Conclusion: The results of this study suggest that KOSS might be an appropriate measurement scale to estimate occupational stress of Korean employees. Further and more detailed study needs to be conducted to improve the validity of this scale.

오리엔탈나리의 球根 收穫時期와 低溫處理 期間이 生育에 미치는 影響

金熙峻,金正萬,金致善,柳汀,崔泳根,文炳永 한국화훼연구회 2001 화훼연구 Vol.9 No.1

This study was carried out to determine the effect of the duration of chilling treatment and the lifting time of bulbs on growth of Lilium Oriental hybrids for product of cut flower in the type of forcing or semiforcing culture in Korea. "Casablanca", "Acapulco" and "Le Reve" in lilium Oriental hybrids were used in these experiment and carried out from 1999 to 2000 in Iksan, Korea. The bulbs for experiment were lifted on August 27, September 27 and October 27 and the all of them were chilled at 5±1℃ for 0,8,10,12 weeks. Development of the bulbs lifted on October 27 was superior than that of lifted bulbs on August 27 in the three cultivars. The bulbs lilted lately and chilled for a long time were sprouted more earlier and grown faster. In order to increase bulb sprouting until 100%, the duration of chilling treatment of bulbs was need for 12 weeks on August 27, 10 weeks on September 27 and above 8 weeks on October 27. The flowering according to the duration of chilling treatment and the lifting time of bulbs was same above. Consequently, the bulbs should be chilled at 5±1℃ for chilled for 10 weeks at late September and 8 weeks in producted bulbs at late October in earlyㆍMidseason variety fur product of cut flower hut bulbs of late variety should be chilled for 12 weeks at late September and 10 weeks at late October.

고대산 북서사면(경기도 연천군) 지역의 식물상 및 산림군락 분류에 관한 연구

김남영,김흥식,김영설,김정유,박완근 江原大學校 森林科學硏究所 2004 Journal of Forest Science Vol.20 No.-

2003년 3월부터 10월까지 고대산을 대상으로 식물상과 산림군락을 조사하였다. 관속식물은 94과 299속 481종 1아종 66변종 4품종 1교잡종으로 총 553종류인 것으로 나타났으며, 한국특산식물은 8과 11속 13종 총 13종류, 희귀 및 멸종위기식물은 12과 15속 15속 15종 총 15종류, 귀화식물은 9과 15속 17종 총 17종류로 나타났다. 산림군락은 신갈나무-철쭉군목, 신갈나무-생강나무군단, 갈참나무-신갈나무군락, 굴참나무-신갈나무군락, 당단풍-신갈나무군락으로 전체 1군목, 1군단, 3군락이 분포하는 것으로 나타났다. The study was carried out to investigate the flora and community classification of forest vegetation in Mt. Godae from March to October, 2003. As a result of that, the vascular plants were 94 families, 299 genera, 481 species, 1 subspecies, 66 varieties, 4 formae, 1 hybrid, 553 taxa in all; korean endemic plants were 8 families, 11 genera, 13 species, 13 taxa in all; rare or endangered plants were 12 families, 15 genera, 15 species, 15 taxa in all; naturalized plants were 9 families, 15 genera, 17 species, 17 taxa in all. forest vegetation was classified into 1 order, 1 alliance, 3 communities; Rhododendro - Quercetalia mongolicae (Kim 1990) Lindero - Quercion mongolicae (Kim 1990) A. Fraxinus rhynchophylla - Quercus mongolica Community B. Quercus variabilis - Quercus mongolica Community C. Acer pseudo-sieboldianum - Quercus mongolica Community

유명산의 식물상 및 산림군락분류에 관한 연구

김흥식,김인수,홍금희,김남영,박광서,김정유,박완근 江原大學校 森林科學硏究所 2003 Journal of Forest Science Vol.19 No.-

2002년 3월부터 2003년 10월까지 유명산 자연휴양림을 대상으로 식물상과 산림군락구조를 조사한 결과, 관속식물이 98과 331속 570종 1아종 81변종 4품종 2교잡종으로 총 658종류로 나타났으며, 한국특산식물은 10과 14속 13종 2변종 1교잡종 총 16종류. 희귀 및 멸종위기식물은 9과 10속 11종 총 11종류, 귀화식물은 12과 22속 28종 총 28종류로 나타났다. 산림군락은 신갈나무-철쭉군목, 신갈나무-생강나무군단, 소나무-산거울군락, 잣나무-주름조개풀군락, 물푸레나무-신갈나무군락, 층층나무-신갈나무군락, 굴참나무-신갈나무군락, 싸리-신갈나무군락으로 전체 1군목, 1군단, 6군락이 분포하는 것으로 나타났다. The study was carried out to investigate the flora and community classification of forest vegetation in Mt. Yumyeong from March, 2002 to October, 2003. As a result of that, the vascular plants were 98 families, 331 genera, 570 species. 1 subspecies, 81 varieties, 4 formae, 2 hybrid, 658 taxa in all. Korean endemic plants were 10 families, 14 genera, 13 species, 2 variaties, 1 hybrid. 16 taxa in all ;, rare and endangered plants were 9 families, 10 genera. 11 species, 11 taxa in all ; naturalized plants were 12 families, 22 genera, 28 species, 28 taxa in all. The forest vegetation was classified into 1 order, 1 alliance. 6 communities : Rhododendro - Quercetalia mongolicae (Kim, 1990) Lindero - Quercion mongolicae (Kim, 1990) A. Carex humilis var. nana - Pinus densiflora Community B. Oplismenus undulatifolius - Pinus koraiensis Community C. Fraxinius rhynchophylla - Quercus mongolica Community D. Cornus controversa - Quercus mongolica Community E. Quercus variabilis - Quercus mongolica Community F. Lespedeza bicolor - Quercus mongolica Community

진공차단기용 영구자석형 엑추에이터 최적설계

김한균,김중경,이정근,한성진 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1

The vacuum interrupter operated by permanent magnet actuator(PMA) gives outlook on improved characteristic, higher reliability and cost price reduction as well as the feature of simple structure and few component. For the anlysis and design of permanent magnetic actuator, not only electric, magnetic and mechanical phenomena but also material properties should be taken into account. Aim of the present paper is modeling of permanent magnet actuator(PMA) used in medium voltage distribution systems and remodeling by permanent magnetic. Coupled finite element method is used to analysis the modeling and we compared with previous PMA model and improved PMA model.

제주지역 청정에너지 부존량 및 이용가능량에 관한 연구

김귀식,박정근 제주대학교 공과대학 첨단기술연구소 2007 尖端技術硏究所論文集 Vol.18 No.-

Jeju-do highly relies on outside sources of energy because of its geographical situation. Recently, it has been necessary to enhance its stable energy sources there by protecting it from rising oil prices and preventing further global warming and the resulting serious environmental disruptions caused by the use of fossil fuels. Therefore, in this study, We investigate at the reserves and the available capacity of other energy sources, such as solar, wind, biomass, wastes and small hydro energy. The results show that the available capacity of solar energy is 123,525 TOE/year, wind energy is 1,871,748 TOE/year, and biomass energy is 30,127 TOE/year. Waste energy has an available capacity of 6,629 TOE/year and small hydro energy is estimated at 2,617 TOE/year. The results of the available capacity of clean energy sources show that it is likely double the annual energy consumption of Jeju. Solar energy and wind energy are the greatest potential energy sources, compared to other energy sources. Furthermore, wind energy is available in the highest quantity.

랫드에서 법제유황과 비법제유황의 독성비교

김근수, 정유리, 이남진, 홍성희, 유종훈, 정재황, 강종구 충북대학교 동물의학연구소 2006 Journal of Biomedical and Translational Research Vol.7 No.2

본문참고

[논문]억지말뚝을 이용한 자립식 흙막이 공법의 해석기법 개발

권정근,임종철,김창영 釜山大學校生産技術硏究所 2008 生産技術硏究所論文集 Vol.67 No.-

억지말뚝을 이용한 자립식 흙막이 공법은 많은 실험과 현장적용을 통해 경제적이며 효율적인 공법으로 입증되었다(김,2006). 그러나 지반공학적인 이론적 확립이 되어 있지 않았다. 이에 이론적인 해석기법의 개발을 위해 실제 시공여건을 반영한 단계굴착을 통한 실내모형실험이 수행되었다. 본 연구에서는 단계굴착에 따른 흙막이 벽체 및 억지말뚝의 거동과,단계굴착에 따른 흙막이 벽체와 억지말뚝에 작용하는 토압과 응력을 분석하였다. 그 결과를 바탕으로 지반의 파괴 메카니즘을 제안하였으며 연결부,엄지말뚝,억지말뚝의 해석기법을 개발하였다.

편도절제술을 받는 소아에서 수술 후 오심 및 구토에 대한 Propofol과 Ondansetron의 예방적 효과

김영재,구봉근,이정한,이근무,정순호,최영균,신치만 白中央醫療院 2005 仁濟醫學 Vol.26 No.1

Objective: To examine the prophylactic effect of ondansetron and propofol against postoperative nausea and vomiting(PONV) in children undergoing tonsill ectomy Methods and Materials: Sixty children(aged 3-11 years) who underwent tonsillectomy received antiemetics (ondansetron group; ondansetron 0.1mg/kg, propofol group; propofol 0.5mg/kg) or not (control group) at the end of surgery. Anesthesia was induced with ketamine(1mg/kgiv) and rocuronium(0.5mg/kg) and maintained by inhalation anesthesia with 2-3vol% sevoflurane in 50% N_(2)O/O_(2). Premedication was given as atropine 0.01mg/kg iv. Ketorolac(1mg/kg) was injected for postoperative analgesia immediate after induction. They were monitored the incidence of PONV at operation room, postanesthetic care unit(PACU) and admission room. Results: No significant differences were observed in the total incidence of PONV among the groups. But ondansetron and propofol group made a difference(p<0.05) in the incidence of PONV at operation room compared with control group. Conclusion: In children undergoing tonsillectomy, ondansetron(0.1mg/kg) and propofol(0.5mg/kg) may have a prophylactic effect against PONV at operation room.

뇌자기공명영상촬영술상 병변을 관찰할 수 없는 허혈성 뇌경색

김진석,김태완,임정근 啓明大學校 醫科大學 1998 계명의대학술지 Vol.17 No.4

1. 임상적으로 뇌졸중이 의심되어 증상 발생후 24시간에서 2개월까지 Brain MRI을 실시한 722명의 환자들 중 결과가 가음성인 환자는 모두 22명 (3.1%)이었다. 2. Brain MRI상 병변은 관찰되지 않으나 임상 양상 및 신경학적 이상 소견으로 추정되는 병변의 위치를 구분해 보면 뇌간부가 13명 (59%)으로 가장 많았고, 피질하부 8명 (36%), 피질 1명 (4.5%)의 순 이었다. 3. 대뇌혈관 (large cerebral artery)폐쇄 보다는 분지 동맥 (branch artery)이나 소 관통동맥 (small perforating artery)의 폐쇄에 의한 것으로 추정되는 허혈성 뇌경색의 병변의 빈도가 높았다. 4. 병력, 뇌졸증 위험 인자, 임상 양상, 심전도 검사, 심초음파 검사 및 뇌혈관조영술등에서 혈전성 뇌경색은 12명 (55%), 색전성 뇌경색은 3명 (13%), 원인이 확실하지 않은 경우는 7명(32%)으로 혈전성 뇌경색의 빈도가 뚜렷하게 높았다. 5. T1강조 영상, T2,강조 영상 및 FLAIR sequence를 같이 실시함으로써 허혈성 뇌경색의 조기 발견은 과거의 연구 보고에 비하여 상당히 높아졌으나 계속적으로 Brain MRI상 가음성인 허혈성 뇌경색이 있음으로, 허혈성 뇌경색의 조기 진단에는 새로운 기법인 확산강조 자기공명영상, 관류강조 자기공명영상, 자기공명 분광경 등의 다른 특수한 Brain MRI이 필요할 것으로 생각되며, 항상 신경학적인 검사를 통한 임상적인 진단이 선행되어야 한다. Background : Brain magnetic resonance imaging (MRI) is more sensitive than computed tomography in the diagnosis of acute ischemic stroke, but may not visualize all acute ischemic stroke. For deeper understanding of MRI negative strokes, we reviewed case histories, abnormal neurological finding, and localized ischemic lesions presumedly which were not present in brain MRI scans. Methods : Patients with a clinically definite first ischemic stroke and absence of corresponding lesion in brain MRI scans were studied retrospectively with hospital records dating from January 1994 to November 1996 and prospectively from December 1996 to August 1997. Patient with transient ischemic stroke, postictal paralysis, central nervous system infection, demyelinating disease, hemiplegic migraine, functional or hysterical cause, multiple cerebral infarction, scans within 24 hours and equivocal findings were excluded. Brain MRI was scanned with T2WI, T1WI and FLAIR sequence. Results: We studied 722 patients with clinically diagnosed definite acute ischemic stroke during the study period and identified 22 patients (3.1%) with the absence of corresponding lesion in brain MRI scan. The ischemic strokes without brain lesions on MRI scan were clinically localized to the brain stem (n=13, 59%), subcortex (n=8, 36%) and in the cortex (n=1, 4.5%). Perforating arterial and thrombotic ischemic lesions seemed to be more common than large arterial & embolic lesions. Risk factors was not different between MRI positive and MRI negative ischemic stroke. Summary: Acute ischemic stroke with absence of brain lesion in MRI scans is more common in brain stem and subcortex than in the cortex. There is some potential limitation of standard MRI scan for diagnosis of acute ischemic stroke, therefore further scans with new imaging studies such as perfusion/diffusion weighted magnetic resonance imaging are required in selected cases.