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.

감마선 조사 랫트의 고환에서 fibronectin의 발현

정진우,김희철,김정태,안미정,이지영,신태균 제주대학교 방사능이용연구소 2005 방사선응용과학연구소논문집 Vol.19 No.-

후두 미세수술 후 발생한 일시적인 설인신경 및 설하신경 장애 1예

정철우,주영민,박성철,최정섭 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.11

분편 인플루엔자백신(split influenza vaccine)의 임상효과 및 면역원성에 관한 연구

우흥정,김동림,정희진,천병철,이주연,안정배,김지희,박찬,신영규,김우주,김민자,박승철 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.1

목적 : 아단위 인플루엔자 백신 접종 후 백신의 인플루엔자 예방효과, 인플루엔자 방어 항체형성, 인플루엔자 백신의 안전성을 조사하고자 하였다. 방법 : 총 571명을 대상으로 인플루엔자 백신 접종을 하였고, 이들 접종자에서 인플루엔자 양질환의 이환을 조사하여 인플루엔자 백신의 인플루엔자예방효과를 알아보았고, 백신의 접종 전 및 접종 4주 후 혈청에서 혈구응집억제물(Hemagglutination Inhibition : HAI) 항체 검사를 실시하여 백신의 방어항체생성을 조사하였고, 백신의 안전성을 알아보기 위해 백신접종 후 1주일 이내의 부작용을 조사하였다. 결과 :백신 접종군과 백신 비접종군에서 인플루엔자 양 질환의 이환을 조사한 결과 접종군 28.35%, 비접종군 35.88%으로 나왔으며, p 값이 0.001로 통계적으로 접종군에서 유의하게 낮았고, 인플루엔자 양 질환의 예방 효과는 20.97%를 보였다. 백신의 방어항체 형성의 평가를 위해 유럽의 인플루엔자 백신 허가 기준을 조사하였는데 B/Guangdong/5/94균주의 백신접종 후 항체가 40이상의 비율을 제외한 다른 기준은 모두 만족 시켰다. 부작용은 전체 조사자 521명중 149명(29%)으로 주로 접종 부위의 국소 부작용을 호소했고, 전신 부작용은 2% 내외였으며 특별히 심각한 부작용은 발견되지 않았다. 결론 : 분편 인플루엔자 백신은 인플루엔자양질환의 예방과 방어항체생성에 효과 있으며 안전한 것으로 사료된다. Background : The safety and effectiveness of influenza vaccine are well known in developed country. The influenza vaccination has been recommended as one of the tentative immunization schedule for indicated persons since 1997 in Korea. But there are still no available data about them, even though nearly 5 million doses of influenza vaccine were used in 1997-1998 season. So it is immediately needed to investigate the safety. efficacy and immunogenicity of influenza vaccine among Korean. Methods : We studied the clinical efficacy of influenza vaccine by monitoring Occurrence of influenza-like illness in influenza risk group(vaccination ; 300, non-vaccination; 215) from December in 1997 to March in 1998. We used the split quadrivalent influenza vaccine containing 15 microgram of hemagglutinin of A/Beijing/262/95(HlNl), A/Wuhan/359/95(H3N2), B/Mie/1/93 and B/Guangdong/5/94. Hemagglutination inhibition(HA1) antibody titers were determined before immunization and 1 months after vaccination And we evaluated adverse effect of influenza vaccination at 7 days after vaccination. Results : Influenza vaccination was associated with si@icant reductions in influenza-like spptoms(vaccination group; 28.35%, non-vaccination group, 35.88%, p=0.001). The preventive effect of influenza-like i3lne.s among influenza risk goup was 20.97%. And immunogenicity of influenza A and B exceeded all of the European licensure criteria for immunogenicity except postvaccination proportion of titers 240 of B/Guangdong/5/94 strain. And the adverse effects were mainly local injection site problem and no serious adverse effect was noted. Conclusion : Split influenza vaccine is safe, inmunogenic and eff'tive in influenza risk group in Korea.

[논문]토사터널 굴착시 발생하는 구조물의 부등침하 억제용 마이크로파일의 효과에 관한 연구

박진우,권정근,임종철 釜山大學校生産技術硏究所 2007 生産技術硏究所論文集 Vol.66 No.-

도심지에서 건설되는 각종 터널 시공시 현장여건 동 그 특수성에 따라 지중 및 지상에 존재하는 각종 인접구조물에 대한 안정성 확보가 필수적인 요건으로 대두되고 있다. 따라서 이같은 문제를 극복하면서 깊은 기초로서의 역학적 특성을 가지며, 현장의 적용성 및 시공성/ 경제성 등 여러 가지 장점을 가진 마이크로파일을 적용함에 있어서,선행연구에서 규명되어진 역학적 특성을 통해 파일의 적절한 보강형식과 현장의 적용성 및 보강의 효율성을 높이기 위한 수치해석을 실시하고/ 터널 인접구조물의 부등침하 안정검토 해석결과와 현장여건을 고려한 마이크로파일의 보강각도와 길이에 대한 효율적인 보강대책을 제시 하고자 한다.

정신분열병 환자 자녀에서의 위스콘신 카드분류 검사

김철권,변원탄,장우석,장정희,조진석,김명정 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.5

연구목적 : 위스콘신 카드분류 검사가 정신분열병의 취약지표를 측정하는 도구로 이용될 수 있는지를 알아보기 위한 것이다. 방 법 : 중고등학교 재학생인 정신분열병 환자의 자녀 28명과 부모중 한 명이 알코올 의존증으로 정신과적 치료를 받고 있는 환자의 자녀 18명, 그리고 정신과학적으로 건강한 부모의 자녀 41명을 대상으로 위스콘신 카드분류 검사를 시행하여 세 군간에 그 결과를 서로 비교하였다. 결 과 : 위스콘신 카드분류 검사에서 세 군간에 총 시행 횟수, 총 정답반응 퍼센트, 총 오답반응 퍼센트, 보속반응 퍼센트, 보속 오답반응 퍼센트, 비보속 오답반응 퍼센트, 개념수준 반응 퍼센트, 완성한 범주 수, 첫 범주를 완성하기까지의 시행 횟수, 한 분류범주를 지속하지 못한 횟수, 그리고 학습 효율성 등과 같은 모든 변인에서 유의한 차이가 없었다. 정상 대조군의 하위 10%에 해당되는 총 정답반응 퍼센트 점수를 절단점으로 삼아 세 군에서 그보다 낮은 점수를 얻은 피검자들의 숫자를 확인한 결과 세 군간에 유의한 차이를 발견할 수 없었다. 결 론 : 본 연구 결과는 위스콘신 카드분류 검사에 의해 정신분열병의 유전적 취약지표를 찾아낼 수 없다는 가능성을 강하게 시사한다. In order to evaluate whether Wisconsin Card Sorting Test(WCST) could be used to detect the vulnerability markers of schizophrenia, three groups such as offsprings of schizophrenic patients(n=28), offsprings of alcoholic patients(n=18), and offsprings of psychiatrically normal persons(n=41) were examined for their concept formation and abstract thinking by means of WCST. The results were as follows ; 1) No significant differences were noted in all variables of the WCST such as number of total administered trials, total correct response %, total error response %, perseverative response %, perseverative error response %, nonperseverative error response %, conceptual level response %, number of completed category, number of trials to complete lst category, number of failure to maintain a set, and learning to learn among three groups. 2) There was no difference in the number of cases with extreme low WCST total correct % of lower 10% of the normal controls among three groups. These results suggest that WCST could be an ineffective instrument for using to detect the vulnerability markers of schizophrenia.

요 검사용 스트립의 분광학적 분석을 위한 Computer Simulation

김성철,진병문,김재형,김정배,조진욱,전계록,이승진,김건우 동의대학교 기초과학연구소 1999 基礎科學硏究論文集 Vol.9 No.1

The spectroscopic properties of 9 pads in a urine strip were studied to develop a urine analysis system. From the present work, we determined the wavelength range which could accurately distinguish the degrees of 9 test items. A computer simulation was performed to distinguish the primary color reaction in the urine strips by using the reflectance of the urine strips, the iuminous intensity of light-emitting diodes, and the spectral sensitivity of photodiodes. The simulation results agree well with the experimental results obtained by using a UV-Visible spectrophotometer.

휘발성 용제(본드)흡입 금단증상으로 인한 경련발작 1례

이기철,정우승,이정호 大韓神經精神醫學會 1991 신경정신의학 Vol.30 No.2

The authors experienced a case of withdrawal seizure of generalized tonic-clonic type after discontinuation of volatile substance abuse. The seizure was well treated with intravenous injection of 4mg lorazepam. The authors report the case with the review of literatures related to the volatile substance abuse.

REVERSE MOAT 식각 공정 유·무에 따른 STI-CMP 공정의 평탄화 특성

김철복,박성우,정소영,서용진 대불대학교 2001 論文集 Vol.7 No.1

Chemical mechanical polishing (CMP) process has been widely used to planarize dielectric layers, which can be applied to the integrated circuits for deep sub-micron technology. The rise throughput and the stability in the device fabrication can be obtained by applying CMP process to shallow trench isolation (STI) structure in 0.18㎛ semiconductor device. The reverse moat process has been added to employ in STI-CMP. Thus the process became complex and the defects were seriously increased. Removal rates of each thin films in STI-CMP was not equal, hence the devices must to be effected, that is, the damage was occurred in the device area for the case of excessive CMP process and the nitride film was remained on the device area for the case of insufficient CMP process than these defects affect the device characteristics. In this work, the high selectivity slurry(HSS) was developed to perform the direct global planarization without reverse moat etch step, and the planarization characteristics of STI-CMP process with and without reverse moat etch step were studied.

RAM(Range Adjusted Measure)을 이용한 부품소재 기업들의 생산성 분석 및 R&D 현황에 관한 실증연구

이정동,백철우,이운규 한국생산성학회 2004 生産性論集 Vol.18 No.2

Increased global sourcing and reorganization in high value-added-centered industries make parts and material industry, which forms 46% of total production and 40% of total exports in manufacturing sector, more important. In a sense that parts and material industry is . vulnerable in spite of its consequence, a lot of policy support was given. Parts and material industry, however, has never been researched empirically in firm level, therefore in this research we would like to analyze the competitiveness of parts and material firms compared with manufacturing sector, and to inquire into their current R&D position. Consequently, we suggest how to make value-added products more efficiently through R&D.