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.

부산, 경남지역 작업장 환경관리에 대한 노사간 인식도 조사 분석

옥치상,김정아 高神大學校 1991 論文集 Vol.19 No.-

The study was done for the purpose of comparing the cognition between labours and masters for work-shop environmental management. The subjects consisted of 128 personnel who are in 64 work-shops in Kyung-Nam province and Pusan city. Data collection was done from July 18th to August 20th 1990, by means of a questionnaire. The analysis of data was done by use of t and x²-test. Based on results, the backgrounds of labours and masters in work-shops were different by age, sex and service period. And the composition was 53.2% in twenties labours and 50.8% in thirties masters. The cognition for environmental pollution was very high. The environmental education in work-shops was very low as 20-40%. So it was concluded that the most desirable work-shop environmental management is recommended the development and the enforcement of educational programs for hazardous prevention the removal of hazardous pollutants, physical examination etc., and the estabilishment of environmental department

실험적 치아 이동시 백서구치 치주인대의 CGRP 면역반응 신경섬유의 변화

성정옥 慶北大學校 齒科大學 1996 慶北齒大論文集 Vol.13 No.-

실험적 치아 이동에 의한 백서 치주인대의 CGRP 면역반응 신경섬유의 변화를 관찰하기 위하여 210gm 내외의 생후 6주령의 웅성백서를 정상대조군과 교정력 적용시간에 따라 12시간, 1일, 3일, 7일, 12일 경과군으로 나누어 각 군에 3마리 이상씩 배분하여 각 해당기간동안 상악제1대구치에 80gm 내외의 교정력을 가한후 희생시켜 calcitonin gene-related peptide(CGRP)의 항체를 이용한 면역조직화학법으로 염색하여 관찰한 소견은 다음과 같다. . 12시간 교정력을 가한 치아의 신장, 압박측 치근단부 모두에서 CGRP 면역반응 신경섬유가 감소되었다. . 1일간 교정력을 가한 치아의 신장, 압박측 치근단부에서는 CGRP 면역반응 신경섬유의 수는 감소되었으나 신장측에서는 아주 가는 신경섬유의 분지가 일부 관찰되었다. . 3일간 교정력을 가한 치아의 신장측과 압박측 치근단부에서는 중정도 굵기의 신경섬유는 감소되고 가는 신경섬유의 많은 분지가 관찰되었는데 신장측이 압박측보다 더 많았다. . 7일간 교정력을 가한 치아의 신장측과 압박측 치근단부에서는 신경섬유의 분지가 대조군에 비하여 많이 증가되었고 가는 분지도 증가되었는데, 신장측이 압박측에 비하여 더 많이 증가된 것으로 관찰되었다. . 12이간 교정력을 가한 치아의 압박측 치주인대의 CGRP 면역반응 신경섬유는 거의 정상으로 회복되었으나 가는 분지는 증가된 상태였고 신장측 치주인대에는 신경섬유가 증가된 채 유지되었다. . 위의 결과로 미루어 보아 치주인대의 CGRP 면역반응 신경섬유는 기계적 자극에 의하여 초기에는 파기되어 감소되나, 즉시 재생되는 적응성을 갖고 있으며 신장측에 더 많기는 하나 압박측 치주인대에도 많은 가는 분지를 내는 것으로 보아 염증반응에 관여함과 동시에 골생성 및 골흡수의 골개조에 관여할 것으로 생각된다. To investgate the changes of the CGRP immunoreactiv nerve fibers in the periodontal ligament of the rat molars during experimental tooth movement, immunohistichemical study was performed using the Sprague-Dawley rats(6 weeks old, 210 gm in body weight) The orthodontic force(80gm) was applied by ligating the Ni-Ti coil spring between upper right first molar and upper right incisors, and maintained 12 hours, 1,3,7,12 days, The results were as follows . CGRP immunoreactive nerve fibers were showed reduced immunoreactivity and number in 12 hours, and 1 day group, but new thin fibers of CGRP immunoreactive were observed at the periapical periodontal ligament of the distal root(tension site) in 1 day group . In 3 day group, thick CGRP immmunoreactive nerve fibers were reduced, but thin fibers were domonstrated at the appical periodontal ligament of the mesial and distal root, Apical periodontal ligament of the distal root had much more thin branches than the mesial root. . In 7 day group, the CGRP-immunoreactive nerve fibers were increased in terms of the number and thin branches in the apical periodontal ligament of the mesial and distal root, but the distal root had more than the mesial root. . In 12 day group, the CGRP immunoreactive nerve fibers showed similar distribution to normal at compression site but increased number of fibers at tension site. . The CGRP immunoreactive nerve fibers in the periodontal ligament have adaptive ability that regenerate the nerve fibers immediately which were destroyed and degenerated by mechanical force and seems to have some relation to the bone remodelling process including bone resorption and bone formation, and local inflammatory response.

Pb(Mg_(1/3)Nb_(2/3))O_(3)-PbTiO_(3) 단결정의 압전 특성 평가 및 응용

정호,임성민,김옥경 한양대학교 이학기술연구소 2002 이학기술연구지 Vol.4 No.-

The dielectric, piezoelectric, and elastic properties of 0.67pb(Mg_(1/3)Nb_(2/3))O_(3) - 0.33PbTiO_(3) (PMN-PT) single crystals grown by a Bridgman method was investigated. Two multiple phase transitions at ~78°C and ~145°C, from rhombohedral to tetragonal and then to cubic phase, have been observed. Even though PbMg_(1/3)Nb_(2/3))O_(3) (PMN) is relaxor materials, the phase transition of PMN-OT seems like to that of normal ferroelectric materials. The electromechanical, piezoelectric, and elastic properties of PMN-PT at rhombohedral phase are better than those of PMN-PT at teteagonal phase. The electromechanical coupling factors k_(33), k_(33)', k(_t) and piezoelectric constant d_(33) at room temperature is larger than those of commercial PZT polycry stalline ceramics. Bridgman 방법으로 성장시킨 0.67Pb(Mg_(1/3)Nb_(2/3))O_(3)-0.33PbTiO_(3) 단결정의 유전, 압전, 탄성 특성 등을 조사하였다. 약 78°C와 145°C에서 능면체상에서 정방정상으로 다시 정방정상에서 입방정상으로 상전이가 두 번 일어나는 것이 관찰되었다. PMN은 완화형 강유전체지만 PMN-PT 단결정은 일반적인 장유전체의 상전이 특성을 나타내었다. PMN-PT 단결정은 정방정상에서 보다 능면체상에서 더 우수한 압전 특성을 나타내었다. <001> 면으로 가공된 PMN-PT 단결정의 압전 특성을 평가한 결과 전기 기계 결합 계수 k_(33),k_(33)',k_(t)등과 압전 전하 계수 d_(33)이 상온에서 상용화된 PZT 보다 더 우수한 특성을 나타내었다.

저체중 또는 과체중 청소년에서 캠프 프로그램을 이용한 영양 교육효과에 관한 연구

성미경,승정자,류화춘,박재년,박동연,최미경,조경옥,최선혜,이윤신,김유경,이은주 대한지역사회영양학회 2003 대한지역사회영양학회지 Vol.8 No.4

This study was performed to evaluate the effectiveness of a nutrition education program developed for nutritionally imbalanced adolescents. A summer nutrition camp was held for 23 overweight and 16 underweight subjects. Its effectiveness with regard to was evaluated at the end of the camp and 6 months later. Nutrition knowledge, nutritional attitude, food behavior, nutrient intake, exercise habit and ideal body figures desired by the subjects. The results showed significantly higher nutrition knowledge scores at the end of the camp as compared to those obtained prior to the camp program, and these scores were maintained for at least six months. Nutrition attitude scores also improved after the education program, and these improved scores also lasted for 6 months. However, the food behavior scores measured 6 months after the education program were not significantly different from those obtained prior to the camp. Also, the exercise habit, the ideal body figures and the body figures desired by the subjects remained unchanged. When nutrient intakes of subjects were assessed before the program and 6 months later, the mean daily vitamin C intake was significantly increased after the education program. Also, the intake of iron from plant food sources increased in the overweight subjects, while less iron from animal source were consumed by the underweight subjects. Both groups tended to consume more vegetables and fruits 6 months after the education program which may have contribute to the higher vitamin C and plant-based iron intakes. These results indicate that a 4-day nutrition education camp program sustained changes in nutrition knowledge and nutrition attitude for 6 months. The increased intake of vegetables and fruits was also achieved through this education program. However, changes in dietary behavior in adolescents may require repeated education.

한 종합대학교 재학생의 학교보건진료소 이용경험

정복심,박상기,김양옥,김기순,박종 조선의대 1998 The Medical Journal of Chosun University Vol.23 No.1

상호운용성 지원을 위한 이동 에이전트 시스템 설계

정성옥,이정기,홍성표,송기범,이준 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.1

A mobile agent is a computer program that acts autonomously on behalf of a person or organization and that has the unique ability to transport itself from one system in a network to another. An agent system is a platform that can create, interpret, execute, transfer and terminate agents. But, most current mobile agent systems adopted their own architectures, being implemented in various ways. Since those agent systems provide different interfaces, agens created in one mobile agent system could not move to other agent systems perform their task. To solve this problem, interoperability becomes one of the important issues on mobile agent systems. The OMG(Object management Group) proposed: the MAF(Mobile Agent Facility) specification for the interoperability among heterogeneous mobile agent systems. The MAF specification contains MAFAgentSystem and MAFFinder interfaces, and defines agent management, code mobility and naming rule. In this paper, we propose an execution model that can execute mobile agents within an agent system and migrate them to a remote agent system as conforming MAF, and design the structure and functions of its agent system. Our model uses Java and CORBA ORB in its the implementation and exploits their characteristics appropriately. Specifically its agents beside its clients can spawn child agents and control other agents.

南北朝 楷書의 東漸에 대한 槪觀

鄭祥玉 한양대학교 한국학연구소 1997 韓國學論集 Vol.30 No.-

일록춘폐흡충 충체 단백질의 분획별 항원성

정구성,이옥란 순천향의학연구소 1997 Journal of Soonchunhyang Medical Science Vol.3 No.1

일록춘폐흡충의 조항원 중 항원단백질의 항원성 차이를 보고자 이 연구를 시도 하였다. 충체 추출물 조항원을 Sephacryl S-300 gel filtration과 DEAE anion exchange chromatography에 의해 각각 조항원을 분리하였다. 이들 분리된 항원은 SDS-PAGE로 단백질 분획상을 구별 하였고, 효소면역 반응(ELISA)에 의하여 항원성을 비교하였다. Gel filtration으로 분리된 S2항원과 chromatography로 분리된 D4 및 D5 항원이 각각의 분리항원중에서 강한 항원성을 나타내었다. 이들은 항원성이 보다 낮은 다른 분리항원에 비해 분자량 8∼9 kDa, 27∼29 kDa, 37∼39 kDa, 50 kDa, 55 kDa 및 60 kDa 분획의 염색강도가 높았고, 이 중 8∼9 kDa를 제외한 나머지 분획들은 immunoblot으로 강한 항원성이 증명 되었다. This study was done to detect the antigenic component from the crude worm extract of Paragonimus iloktsuenensis. Three and five protein fractions, S1∼S3 and D1∼D5 were separated by Sephacryl S-300 gel filtration and by DEAE anion exchange chromatography, respectively form the crude antigen(whole worm extract: PIWA) of P. iloktsuenensis. These fractions were further analyzed by SDS-PAGE(SDS-polyacrylamide gel electrophoresis). The antigenicities of those protein fractions were evaluated by OD (optical density) value of ELISA(enzyme-linked immunosorbent assay), reacted with the serum of the rats infected with P. iloktsuenensis. The results were as follows: 1. The worm extracts(crude antigens) were separated in three fractions, S1, S2 and S3 by Sephacryl S-300 gel filtration. By SDS-PAGE, the characteristic fraction of S1 was 98 kDa, while those of S2 were 20 kDa, 27∼28 kDa, 38 kDa, 50 kDa, 55 kDa and 60 kDa, and of S3 were 12∼13 kDa, 17∼18 kDa and 35∼36 kDa, respectively. The major fraction was of 27∼29 kDa molecular weight among the three fractions. The worm extracts were separated in five fractions, D1, D2, D3, D4 and D5 by DEAE anion exchange chromatography. The characteristic fractions of D1 were 14∼15 kDa and 17∼18 kDa, and of D2 were 12∼13 kDa and 14∼15 kDa, and of D3 were 27∼28 kDa and 35∼36 kDa, and of D4 were 27∼28 kDa, 35∼36 kDa, 38∼39 kDa and 50 kDa, and of D5 were 8∼9 kDa, 27∼29 kDa, 37∼39 kDa, 55 kDa and 60 kDa, respectively. 2. The antigenicity of the fractions, expressed by the intensity of OD value of ELISA. The S2, D4 and D5 revealed stronger antigenicity than those of others. Statistically, antigenicity of S2 antigen (0.98±0.36∼1.42±0.55) was stronger(p<0.001) than that of S3(0.41±0.11∼0.90±0.41) of most low OD values in separated antigens by gel filtration, and D5 antigen (0.73±0.22∼1.38±0.65) of highest OD value was stronger(p<0.001) in all infection. That of D2(0.37±0.13∼0.51±0.23) of lowest OD values in separated antigens by chromatography. D1 showed relatively strong antigenicity compared with the other in periods of two and four weeks after infection. Among separated antigens, the 27∼29 kDa and 37∼39 kDa of protein components fractioned from whole worm extract crude antigen of P. iloktsuenensis plays a important role of humoral immune reaction in this parasitic infection, and the protein of 17∼18 kDa was regarded as sensitive antigen at early period.

외과적 악교정술을 위한 두부방사선학 계측 기준치

성재현,성정옥,경희문,권오원 대한치과교정학회 1989 대한치과교정학회지 Vol.19 No.1

The purpose of this study was to establish Korean normas that will be valuable aids for diagnosis in orthognathic surgery patients. Lateral cephalometric measurements were established for adult Koreans (60 males, 62 females) with normal occlusion and acceptable profiles. The results were as follows: 1. Means, standard deviation and sexual differentiation were included within each measurement. 2. In skeletal mesurements, FH to SN and SN to mandibular plane measurements in females were larger than those in males while all linear measurements in males were larger than those in males were larger than those in females. 3. Significant differences were observed between male and female groups on all of the items that showed vertical relationship in dental measurments. And the measurements of ADH, PDH and overbite in males were larger than those in females while the measurements of incisor exposure in females were larger than those in males. 4. In all measurements of soft tissue except NLA, that is, of FCA, UFH, ULL and LLL, males were larger than those in females.