• Safety and Health at Work
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• 제6권1호
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• pp.9-17
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• 2015

The human hand is a complex structure that performs various functions for activities of daily living and occupations. This paper presents a literature review on the methodologies used to evaluate hand functions from a biomechanics standpoint, including anthropometry, kinematics, kinetics, and electromyography (EMG). Anthropometry describes the dimensions and measurements of the hand. Kinematics includes hand movements and the range of motion of finger joints. Kinetics includes hand models for tendon and joint force analysis. EMG is used on hand muscles associated with hand functions and with signal-processing technology.

• 한국콘텐츠학회논문지
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• 제12권1호
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• pp.254-264
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• 2012

이 연구는 무용관련전공 졸업생들의 취업률과 취업 경로를 분석해 현행 무용학과에서 운영하고 있는 교과과정이 무용전공 졸업생들의 취업 경로와 연관성이 있는가를 살펴보아 시장 지향적 무용전공 교과과정 모형개발을 제안하고자 했다. 이를 위해 경인 지역 무용관련 프로그램을 운영하는 10개 대학을 선정해 최근 3년 동안의 취업률, 취업 경로, 교과과정을 분석 했다. 이를 토대로 다음과 같은 결론을 얻었다. 무용관련전공 졸업생들의 취업률은 건강보험 가입 조건이 취업률 산정에 고려된 2010년도의 경우 20% 대의 아주 낮은 취업률을 보였으며, 취업률의 비는 해마다 침체되고 있었다. 취업 경로는 무용관련 직종이 과반 이상을 차지했고, 무용과 관련 없는 사무관련 직종과 스포츠 직종도 일정 비율을 차지하고 있었다. 취직 경로에 맞춰 자격증 교과목, 신체 구조와 기능과 관련된 체육과목, 행정, 경영, IT와 관련된 교과목, 융 복합 교과목, 공연 기획 관련 교과목, 아동 및 노인 관련 교과목 개설의 다양성과 확장이 필요한 것으로 조사되었으며, 취업 기반으로 개설된 교과목 중에 취업 시장에 기여하지 못하는 교과목은 이에 관련된 취업 시장 개발이 필요한 것으로 조사되었다.

• 디자인학연구
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• 제15권3호
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• pp.115-126
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• 2002

현대의 복잡한 사회구조와 사회 구성원의 의식변화에 따라 사회 구성원의 직업수행방식과 능력도 바뀌어 가고 있다. 이러한 사회환경변화에 따른 사회구성원의 직업 수행능력과 적응력 제고를 위해 학습자의 자율적 학습체제의 필요성이 대두되었다. 이러한 해결점으로 모듈식 교재 개발의 체제적인 접근방법이 요구되었고, 특히 직업을 수행할 수 있는 능력을 중심으로 한 모듈식 교재체제를 개발하고 적용하는데 본 연구의 목적을 두고 있다. 본 연구는 광고디자인 직무분석을 토대로, 각 직무를 수행할 수 있는 학습 능력을 추출하고 각 능력별로 학습영역을 설정하여 각 영역별 지식, 기능, 태도를 추출하였다. 이러한 과정을 집대성한 것이 모듈식 교재체제 개발의 기초가 되는 것이다. 본 연구를 시작으로 광고디자인 분야뿐만 아닌 다른 분야에서도 적극적으로 모듈식 교육체제를 개발${\cdot}$적용하길 바란다.

• Safety and Health at Work
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• 제7권2호
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• pp.97-101
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• 2016

Background: Workplace violence (WPV) is becoming an issue that needs immediate attention in the United States, especially during this period as more states are adopting the "stand your ground laws to promote worker protection." This study was conducted to investigate how WPV has contributed to an unsafe environment for nurses and nursing assistants who work in long-term medical care facilities. Methods: A structure questionnaire was used to collect data for the study. Three facilities were sampled and 80 nurses and certified nursing assistants participated in the study. Ninety-two percent (n = 74) were female and 8% (n = 6) were male. Approximately 62% were black or African American, approximately 33% were Caucasians, and only 2% were from other ethnicities. Results: We found that 65% of the participants had experienced WPV while 41% believed that management shows little or no concern for their safety. Approximately 23% of respondents believed that reporting supervisor's WPV act is an unsafe action. In addition, 22% of those who reported that they have experienced WPV believed that the work environment is not safe to perform their duties. This significant difference in perception of workplace safety between those who had experienced WPV and those who had not was significant (t = 3.95, df = 158, p < 0.0001). Conclusion: WPV is an epidemic problem that affects all health-care professionals. The findings of this study could help long-term medical care facilities' management identify the areas to focus on mitigating, controlling, and/or eliminating incidents of WPV.

• 대한건축학회논문집:구조계
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• 제35권11호
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• pp.155-162
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• 2019

The construction industry is the highest safety accident causing industry as 28.55% portion of all industries' accidents in Korea. In particular, falling is the highest accidents type composed of 60.16% among the construction field accidents. Therefore, we analyzed the factors of major disaster affecting the fall accident and then derived feature importances by considering various variables. We used data collected from Korea Occupational Safety & Health Agency (KOSHA) for learning and predicting in the proposed model. We have an effort to predict the degree of occupational fall accidents by using the machine learning model, i.e., Adaboost, short for Adaptive Boosting. Adaboost is a machine learning meta-algorithm which can be used in conjunction with many other types of learning algorithms to improve performance. Decision trees were combined with AdaBoost in this model to predict and classify the degree of occupational fall accidents. HyOperpt was also used to optimize hyperparameters and to combine k-fold cross validation by hierarchy. We extracted and analyzed feature importances and affecting fall disaster by permutation technique. In this study, we verified the degree of fall accidents with predictive accuracy. The machine learning model was also confirmed to be applicable to the safety accident analysis in construction site. In the future, if the safety accident data is accumulated automatically in the network system using IoT(Internet of things) technology in real time in the construction site, it will be possible to analyze the factors and types of accidents according to the site conditions from the real time data.

• Safety and Health at Work
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• 제9권3호
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• pp.334-338
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• 2018

Background: With global changes in the current state of work and employment, the role of health-adverse psychosocial work environments has received increasing attention in developed as well as in rapidly developing countries. Thus, there is a need to apply valid measurement tools for monitoring and preventive purposes. This study aims to examine the factorial structure and psychometric properties of the Persian version of the effort-reward imbalance (ERI) questionnaire, assessing one of the internationally leading concepts of stressful work. Methods: This descriptive cross-sectional study of a random sample of 202 white collar employees in an industrial company in Iran analyzes the ERI scales by exploratory and confirmatory factor analysis. Moreover, aspects of construct and criterion validity are tested. To this end, correlations of ERI scales with subscales of organizational injustice, a complementary work stress model, and also the correlations of ERI scales with a questionnaire assessing psychosomatic symptoms are performed. Results: Internal consistency of the three ERI scales was satisfactoryy (Cronbach ${\alpha}$ effort: 0.76, reward: 0.79, overcommitment: 0.75). Fit indices of confirmatory factor analsis pointed to an adequate representation of the theoretical construct (e.g., adjusted goodness of fit index (AGFI): 0.73, goodness of fit index (GFI): 0.78). Negative correlations with subscales of organizational injustice supported the notion of construct validity of the ERI scales, and positive correlations of ERI scales with psychosomatic symptoms indicated preliminary criterion validity. Conclusion: The Persian version of the ERI questionnaire has acceptable psychometric properties and can be used as a valid instrument in research on this topic.

• Safety and Health at Work
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• 제7권2호
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• pp.124-129
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• 2016

Background: Work-related fatigue has a strong impact on performance and safety but so far, no agreed upon method exists to detect and quantify it. It has been suggested that work-related fatigue cannot be quantified with just one test alone, possibly because fatigue is not a uniform construct. The purpose of this study is therefore to measure work-related fatigue with multiple tests and then to determine the underlying factorial structure. Methods: Twenty-eight employees (mean: 36.11; standard deviation 13.17) participated in five common fatigue tests, namely, posturography, heart rate variability, distributed attention, simple reaction time, and subjective fatigue before and after work. To evaluate changes from morning to afternoon, t tests were conducted. For further data analysis, the differences between afternoon and morning scores for each outcome measure and participant (${\Delta}$ scores) were submitted to factor analysis with varimax rotation and each factor with the highest-loading outcome measure was selected. The ${\Delta}$ scores from tests with single and multiple outcome measures were submitted for a further factor analysis with varimax rotation. Results: The statistical analysis of the multiple tests determine a factorial structure with three factors: The first factor is best represented by center of pressure (COP) path length, COP confidence area, and simple reaction time. The second factor is associated with root mean square of successive difference and useful field of view (UFOV). The third factor is represented by the single ${\Delta}$ score of subjective fatigue. Conclusion: Work-related fatigue is a multidimensional phenomenon that should be assessed by multiple tests. Based on data structure and practicability, we recommend carrying out further studies to assess work-related fatigue with manual reaction time and UFOV Subtest 2.

• 지역연구
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• 제39권4호
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• pp.33-51
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• 2023

본 연구는 2010년부터 2020년까지 우리나라 지역노동시장권을 대상으로 업무 특성에 따른 직종 집단간 고용구조의 변화를 살펴보고, 임금 프리미엄에 미치는 영향요인을 분석하는 데에 목적이 있다. 본 연구의 분석은 크게 세 단계로 이루어진다. 첫째, 한국직업정보시스템의 『재직자조사』 원자료의 직종별 업무 특성 자료에 대해 탐색적 요인분석을 수행한 다음, 비단순반복 업무지수를 산출하여 일자리를 유형화한다. 둘째, 『인구총조사』원시 자료와『한국노동패널조사』자료를 결합해 개인 수준 및 지역 수준 자료를 구축한 다음, 2010년부터 2020년까지 직종별 고용 분포 변화를 분석한다. 셋째, 위계적 선형모형을 활용해 직종 집단별 임금 프리미엄에 영향을 미치는 개인 및 지역 수준 요인을 실증 분석한다. 분석 결과에 따르면, 2010년 이후 비단순반복 업무지수가 높은 직종의 고용비중은 계속해서 증가했으며, 대도시 지역노동시장에서 지배적인 고용구조를 가지고 있는 것으로 나타났다. 또한 도시화경제로 인한 집적경제 외부효과는 비단순반복 업무를 주로 요구하는 직업에 종사하는 임금근로자에게 유의한 임금 프리미엄을 제공하는 것으로 나타났다. 본 연구는 지역노동시장 맥락에 따른 일자리 구조의 전환과 임금불평등의 양상을 실증 분석함으로써 지역노동시장의 불평등과 양극화 완화를 위한 정책 대안 마련에 시사점을 제공하고자 했다.

• 한국산학기술학회논문지
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• 제12권5호
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• pp.2230-2240
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• 2011

본 연구는 소규모 제조업 사업장 남성 근로자들의 수면의 질, 직무스트레스 및 피로가 우울수준 에 미치는 영향을 규명하고자 50인 미만의 소규모 제조업 사업장에 종사하고 있는 남성 근로자 856명을 대상으로 2010년 4월1일부터 6월 30일까지의 기간 동안에 자기기입식 설문조사(self-administrated questionnaire)를 실시하였다. 연구결과 조사대상자의 우울군(CES-D 21점 이상)의 분포는 44.3%를 차지하였으며, 우울수준은 직무스트레스(r=0.538, p<0.01), 피로(r=0.533, p<0.01) 및 수면의 질(r=-0.399, p<0.01)과 유의한 양의 상관관계를 보였다. 공분산 구조분석 결과 직무스트레스는 수면의 질이나 피로수준보다 우울수준에 더 큰 영향을 미쳤으며, 직무스트레스 및 피로수준이 증가할수록, 수면의 질이 낮을수록 우울수준을 증가시키는 효과가 있는 것으로 나타났다. 따라서 근로자들의 우울수준을 감소시키기 위해서는 작업환경 및 직무내용의 개선을 위한 노력이 필요할 것으로 생각된다.

• 대한지리학회지
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• 제29권3호
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• pp.340-359
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• 1994

This study intends to describe the characteristics of the transformation of the rural society by tracing the changing social and economic processes of traditional clan villiage (Yeolmi-ri, Silchon-myeon, Kwangju-gun, Kyunggi-province) in the suburbs of Seoul Metropolitan Area. Rural society has experienced serious change of the social structure by the ever expanding urbanization and industrialization since 1960's. The suburbs of Seoul Metropolitan Area is the representative case area of such transformation. This study analyzed various chracteristics of population structure of a villiage, the processes of residential movement and the occupational shift of each household of the villiage in terms of household's life-history collected by interviewing with each household. And the whole households of a villiage is divided by two groups of the native clan group and the non-dan in-migrant group. The results of this study are summarized as follows. 1) This villiage is located within a lineal distance of 40km and a time distance of about 30 to 40 minutes, adjoined dy the Joongbu(중부) national highway, the Kyungchoong (경충) industrial road, the local road between Yangpyuna(양평) and Gonjiam(곤지암) and having a advantageous iocational linkage to Seoul capital city. 2) It is a typical traditional dan villiae constituted of dan family Gu(구) one of whose ancestors had appointed to the prime minister of Chosun Dynasty, and until 1979, 56 out of 60 families of the villiage households were clan families. 3) Since 1979, as the villiage invaded by the out-movement of the small scale manufacturing industries from Seoul capital city, labours moved in this vallige from outside and increased villiage size up to 203 households in 1993, consequently the constitutional proportion between the native clan group and the non-clan in-migrant group was reversed up to 28% vs 72% deepening the sociological heterogeneity. 4) Because of the small scale of industries in this villiage and the vicinity with the city of Seoul, the population turnover of this villiage is very high. The turnover frequency is firstly high within same administrative district of gun(군) level and secondly high between this villiage and the city of Seoul. Thus short-distance movement is identified. 5) There is a close correlation between the residential movement and the occupational shift. The most numbers of non-farm native group have the experiences of migration while the members of native farming group don't shift both the job and the place of residence. The inmigrant group had several migration experiences but few occupational shifts. Thus occupatioanl shift is high for the native group while residential shift is high for the in-migrant group. It is concluded that the change proceeded in Metropolitan suburbs was not directed to form the traditional rural village as 'gesund Gebiet' with respect to the ballance among the economic, cultural and environmental adequency.