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.

흰쥐의 횡복직근 피판술에서 Lipo-PGE1의 투여 시기가 피판 생존에 미치는 효과

정성노,백혜원,조성필,변준희 大韓成形外科學會 2004 Archives of Plastic Surgery Vol.31 No.3

스트레인 게이지 브리지 종류에 따른 탄성계수의 실험적 연구

鄭熺孝,李承烈,朴泳珏,朴峻熙 경상대학교 생산기술연구소 2001 工學硏究院論文集 Vol.1 No.-

Strain gauges are widely used for physical force measurements in mechanical, marine, aircraft and civil engineering as well as the fields of architecture, automobiles, and medical science. Strain is measured to determine the degree and behavior of forces such as stress or load. Strain gauges are easy to use and offer a high degree of accuracy and stability. This paper is shown the accuracy of experimental elastic modulus in the tension test according to the strain gauges connections and bridge circuits which are Quarter Bridge(single active uni-axial gauge), Half Bridge(two active on possion gauge), Full Bridge(four active two possion gauge).

상자형의 전단지연 현상과 유효폭에 관한 연구

鄭熺孝,金洪俊,李承烈,朴峻熙 경상대학교 생산기술연구소 2002 工學硏究院論文集 Vol.2 No.-

In a box girder, it is an accepted practice in structural engineering to represent the effect of 'shear lag' by adopting an 'effective width' concept. The actual width of flange plate (b) is replaced by a reduced width (b_e) over which the longitudinal stresses may be considered uniformly distributed and the application of the elementary theory of bending to the transformed girder cross section gives the correct value of maximum longitudinal stress (σ_max). This paper provides how to determine the magnitude of 'shear lag' and 'effective width ratio' in case of orthotropic box girder which is simply supported, symmetrically loaded only.

계승치의 결손을 동반한 상, 하악 유구치의 다발성 유착에 대한 증례보고

정회훈,최형준,김성오,최병재,이제호 大韓小兒齒科學會 2005 大韓小兒齒科學會誌 Vol.32 No.3

치아유착은 치근의 상아질 또는 백악질이 치조골과 융합된 것으로 치아의 맹출이상을 야기하여 치조골 성장의 장애를 일으킨다. 본 6세 여아는 유구치의 유착과 영구 소구치의 결손을 주소로 본과에 의뢰되었으며 특이할 만한 의과적, 치과적 병력은 없었다. 구강검진 소견상 상, 하악의 좌, 우측 유구치에서 저위교합이 관찰되었으며, 다수의 치아우식증이 존재하였다. 방사선 사진 검사 소견상 상악의 좌, 우측 영구 견치와 계승 소구치의 결손, 상악 유구치의 치근흡수와 하악 유구치의 치주인대공간의 소실 및 미약한 치근흡수가 관찰되었다. 계승 영구치의 결손을 동반한 유구치 유착시 치료목표는 적절한 치조골 성장과 유치의 유지이며, 유착의 발현 시기와 치근의 흡수 정도에 따라 관찰, 수복 또는 발치 등의 치료를 고려할 수 있다. 유착치아의 발치는 인접 치조골 성장에 문제가 없고 인접치의 경사가 일어나지 않도록 최대성장점(growth spurt)을 고려하여 그 시기를 결정해야 한다. Ankylosis is defined as a fusion of cementum or dentine with alveolar bone. Due to the loss of the periodontal ligament on the ankylotic area, the tooth is incapable of continued eruption and hence is unable to follow the normal vertical development of the neighboring teeth and alveolar process. A 6-year-old female was referred to the Dept. of Pediatric Dentistry for ankylosis of primary molars and congenital missing of permanent premolars on both jaws. She had neither specific past medical history nor trauma and infection history in oral and maxillofacial region. Radiographic finding is that the maxillary primary molars were the early onset of ankylosis and had fast root resorption rate. However the mandibular primary molars were ankylosed later and being resorbed slower than maxillary primary molars. The object of treating this case is to maintain the proper alveolar bone growth and retention of deciduous molars. The point of managing this case is as follows: Proper treatment (observation, restoration, of extraction) should be established after thorough consideration of the time of onset, the root resorption rate, progression of infraocclusion and the development of alveolar bone support. We should consider the timing of extraction of the ankylosed teeth without problem of neighbouring alveolar bone growth and tilting of adjacent teeth in the view of growth spurt. Early diagnosis is important to avoid many of the complications with infraoccluded primary molars.

심초음파로 결정된 응급 심낭천자술의 천자부위

김성환,황성오,이강현,조준휘,강구현,문중범,이승환,윤정한,최경훈,김영식 대한응급의학회 2000 대한응급의학회지 Vol.11 No.3

Background: The aim of this study was to determine whether the conventional subcostal approach is suitable for emergency pericardiocentesis in patients with cardiac tamponade or impending cardiac tamponade. Methods: This study was a prospective, observational study conducted at the emergency department of a tertiary hospital, Patients who had symptomatic pericardial effusion and who needed emergency pericardiocentesis in the emergency department were included in this study. We measured the epicardium-to-pericardium distance at the subcostal, parasternal, and apical area with two-dimensional echocardiography to determine the appropriate puncture site for pericardiocentesis. An epicardium-to-pericardium distance of more than 1.0 cm was considered as the primary safety factor in determining the Puncture site for pericardiocentesis. The skin-to-pericardium distance was considered as secondary safety factor. Results: Ninety-five consecutive patients(55 males and 40 females; total mean age: 53 year old) with cardiac tamponade or impending cardiac tamponade were enrolled in this study. The puncture site for pericardiocentesis, as determined by echocardiography, was the subcostal area in 43 patients(45%), the apical area in 40 patients(42%), the left parasternal area In 11 patients(12%), and the right parastemal area in one patient(1%). Pericardiocentesis failed in 2 patients(2%) with the subcostal approach and in one patient(1%) with the apical approach. The average epicardium-to-pericardium distance was 31 ±21 mm in patients with the subcostal approach and 21±8 mm in patients with other approaches. There were no differences in the amount of pericardial fluid and in the intraperical pressure among patient groups according to puncture site. There were two procedure related complications: a puncture of the right ventricle with the subcostal approach and a ventricular tachycardia with the apical approach.

한 전자제품 연구소 종사자들의 생활습관 행태와 건강상태의 관련성

명준표,김형렬,최원선,조성은,이보람,구정완,이강숙,박정일 大韓産業醫學會 2009 대한직업환경의학회지 Vol.21 No.1

목적 학 전자제품 개발연구소의 근로자들을 대상으로 실시하였던 건강검진 자료를 이용하여 생활습관 상태와 건강상태를 파악하고 이들 사이의 관련성을 조사하고자 하였다 방법 건강검진을 받았던 수검자 3041명을 최종 대상자로 선정하였고 국민건강보험공단에서 제시한 건강검진 문진표 중 식이 음주 몹연 운동 항목을 이용하여 생활습관에 대한 평가를 실시하였다 건강검진결과를 이용하여 비만 혈압 당뇨 간장질환 이상지혈증에 대한 정상/비정상을 평가하였다 건강검진결과와 생활습관에 대한 평가는 다변량 로지스틱 희귀분석을 통하여 실시하였다 결과 조사 대상자의 생활습관 중 과도한 음주의 유병률은 1610명(52.9%) 운동 부족 2662명(86,2%) 흡연 952명(31.3%)이였다 건강검진 결과 비만인 군은 824명(27.1%) 고혈압 군은 198명(6.5%) FBS가 비정상 군은 28명 (0.9%) 간기능 검사 비정상 군은 462명(15.2%) 이상지혈증이 있는 군은 563명(18.5%)의 유병률을 보였다 다별량 로지스틱 희귀분석 결과 육류 위주의 식이는 비만 고혈압 간장질환(ALT r-GTP) 이상지혈증(LDL)과 관련이 유의하게 높았고 과도한 음주는 비만 고혈압 r-GTP 비정상의 위험도와 통계적으로 유의한 관련성이 있었다 운동 부족인 군은 HDL 비정상의 위험도가 높았으며 흡연군은 비만 당뇨 간장질환(ALT r-GTP) 이상지혈증(TG HDL)의 위험도가 통계적으로 유의하게 높았다 결론 전자제품 개발연구소 근로자들의 바르지 않은 생활습관(식이 음주 운동 흡연)은 비만 고혈압 당뇨 간장질환 이상지혈증과 관련이 있다 따라서 연구직 근로자들을 대상으로 한 사업장 건강증진 사업이 필요하다 Background An unhealthy lifestyle is the most important cause of lifestyle-induced illness (diabetes hypertension liver enzyme abnormality dyslipidemia etc) This study was carried out to evaluate that relation between employees lifestyle and their health status in a Korean electronic research and development company Methods We conducted a descriptive cross-sectional survey 3,041 consecutive workers in a Korean R&D company were enrolled in this study A checkup list for the health examination (from the National Health Insurance Coperation) which contained the information on the lifestyle, and the results of the health examination which contained information on the body mass index (BMI) systolic blood pressure (SBP) and diastolic blood pressure (DBP) and liver function tests (LFT AST ALT r-GTP) and Cholesterol profiles (total cholesterol TG, HDL, LDL) were done for all the subjects We evaluated the health profile as normal or abnormal Statistical analysis of the health profiles and the lifestyle of the employees was performing by using multiple logistic regression analysis Results The prevalence of 'excessive alcohol drinking was 52.9% (n=1,610) that for 'lack of exercise' was 86.2% (n=2,662), that for meat eating 12.2% (n=370) and that for current smoker was 31.3% (n=952) According to results of health examination the prevalence of obesity was 27.1%(n=824) hypertension was 7.1% (n=215) diabetes was 1.0% (n=30) abnormal LFT was 15.4% (n=469) and dyslipidemia was 18.7% (n=569) On multiple logistic regression analysis of the health profile and lifestyle 'meat eating' was related to obesity hypertension abnormal LFT (ALT, r-GTP) dyslipidemia (LDL) Excessive alcohol drinking was related to obesity hypertension abnormal LFT (r-GTP) Lack of exercise' was related to dyslipidemia (HDL) Current smoker was related to obesity, diabetes abnormal LFT (ALT r-GTP) and dyslipidemia (TG HDL) with statistically significance Conclusions For workers in the R&D company an unhealthy lifestyle (such as diet alcohol drinking lack of exercise and smoking) were related to obesity hypertension diabetes abnormal LFT and dyslipidemia Therefore health promotion is necessary for the young employees of an Korean R&D company

Escherichia coli 패혈증 환자에 합병된 대칭적 하지 말단 괴사증 1예

남해성,유진홍,권순석,민준기,조현선,박민경,심병주,남유정,이지인,김진수,길욱현,조근종,신완식 대한감염학회 2005 감염과 화학요법 Vol.37 No.6

We have encountered a rare case of symmetrical peripheral gangrene complicating Escherichia coli sepsis in a 47-years-old male. He was successfully treated with antibiotics, anticoagulants, and vasodilator. To our knowledge, this is the first report on symmetrical peripheral gangrene complicating E. coli sepsis in Korea.

치아종을 동반한 선천적 결손된 유견치의 공간

이정은,이제호,최형준,김성오,송제선,손흥규,최병재 大韓小兒齒科學會 2010 大韓小兒齒科學會誌 Vol.37 No.2

치열궁에서 공간이 상실되는 것은 악궁내 치아의 고유한 위치에 변화가 생겼을 때 인접 근육들간의 힘의 균형이 변함으로써 치아의 위치이동이 나타나게 되어 발생한다. 공간의 상실을 일으키는 원인으로는 인접면 우식증이나 조기 발거, 치아의 선천적 결손, 왜소치 등이 있는데, 그 중에서 치아의 선천적 결손은 유치열기에서는 영구치열기에 비하여 매우 낮은 빈도를 보이며 계승 영구치의 결손과 높은 관련성이 있다. 선전적 결손은 유측절치에서 호발하며 하악보다 상악에서 자주 발생하는 것으로 보고되었지만, 유견치에서는 드물게 나타난다. 유치의 선천적 결손은 악궁 내에서 인접치아의 경사 및 계승치를 위한 공간의 상설, 악궁 장경의 감소로 인한 치열궁 협착 등과 같은 공간문제를 야기시킬 수 있다. 이 증례는 연세대학교 치과대학병원 소아치과에 내원한 유치열기 어린이에서 상악 우측 유견치의 선천적 결손과 그 부위의 치아종이 있는 악궁의 공간에 대하여 관찰한 것이다 2년 10개월 동안의 정기검사에서 상악 우측 유견치 부위의 콩간 상실은 없었으며 정중선변위나인접치의 근심 경사, 치아종으로인한 임상및 방사선학적 증상등을보이지 않았다 주기적인 관찰을 통해 치아종이 측절치나 견치의 맹출을 방해하거나 주변으로 낭성변화 등의 합병증이 발생하지 않는다면 측절치나 견치의 맹출시기에 치아종을 외과적으로 제거할 예정이며, 상태에 따라 공간유지장치 또는 교정치료가 필요할 수 있을 것으로 생각한다. Space loss of dental arch can appear when the proper position of teeth within the dental arch changes by a certain cause, because the balance of force makes changes about tooth position as well as alignment, The causes of space loss include proximal caries, early extraction, congenital missing of a tooth and hypodontia, etc. Among those causes of space loss, congenital missing of a tooth is more rarely observed in the primary dentition than in the permanent dentition. Congenital missing in the primary dentition is associated with that in the permanent dentition. Furthermore, it can cause space problem, such as mesial tilting or drift of adjacent teeth, space loss for permanent successors and dental arch constriction, etc. Primary lateral incisors is the most commonly involved, in the maxilla rather than in the mandible, but primary canine is rarely reported. In this patient, who visited the department of pediatric dentistry at Yonsei university dental hospital. it was observed that the maxillary right primary canine was congenitally missing and an odontoma was found insteadly. However, neither the space loss for the congenitally missing primary canine nor midline deviation is remarkable during the 2-year-10-month observation period. In addition, any clinical or radiographical symptom did not occur in spite of odontoma. Therefore, surgical enucleation of odontoma is planned according to the eruption of permanent lateral incisor or canine, unless eruption failure of permanent lateral incisor or canine nor cystic change around the odontoma is occurred. Through further evaluation, space maintainer or orthodontic treatment may be necessary.

열처리가 Teflon^(??) FEP film의 전하보존특성에미치는 영향

김성준,이현석,김지균,권정열,이헌용 명지대학교 산업기술연구소 2007 産業技術硏究所論文集 Vol.26 No.-

In this paper, we studied the method of electrets electrode which formed to accumulate negative electric charges by corona discharges. The breakdown voltage samples and damaged samples by various corona discharges have made material stabilization and improved characteristics of electric charge storage throughout the annealing processes. After the experiment made material stabilization nearly melting point by many kinds of annealing conditions, we did the corona discharge again by the charged high voltages, a discharge electrode gap, and a discharged time. As we compared it with the best condition, we confirmed that characteristics of electric charge storages were improved.