• 제목/요약/키워드: Working-Level

검색결과 3,183건 처리시간 0.026초

Ergonomic Evaluation of Workload in Imbalanced Lower Limbs Postures

  • Kim, Eun-Sik;Yoon, Hoon-Yong
    • 대한인간공학회지
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    • 제30권5호
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    • pp.671-681
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    • 2011
  • Objective: The purpose of this study is to compare the workload level at each lower limbs posture and suggest the ergonomic workstation guideline for working period by evaluating the imbalanced lower limbs postures from the physiological and psychophysical points of view. Background: Many workers like welders are working in various imbalanced lower limbs postures either due to the narrow working conditions or other environmental conditions. Method: Ten male subjects participated in this experiment. Subjects were asked to maintain 3 different lower limbs postures(standing, squatting and bending) with 3 different working conditions(balanced floor with no scaffold, imbalanced floor with 10cm height of scaffold, and imbalanced floor with 20cm height of scaffold). EMG data for the 4 muscle groups(Retus Femoris, Vastus Lateralis, Tibialis Anterior, Gastrocnemius) from each lower limbs posture were collected for 20 seconds every 2 minutes during the 8 minutes sustaining task. Subjects were also asked to report their discomfort ratings of body parts such as waist, upper legs, lower legs, and ankle. Results: The ANOVA results showed that the EMG root mean square(RMS) values and the discomfort ratings(CR-10 Rating Scale) were significantly affected by lower limbs postures and working time(p<0.05). The correlation was analyzed between the EMG data and the discomfort ratings. Also, prediction models for the discomfort rating for each posture were developed using physical condition, working time, and scaffold height. Conclusion: We strongly recommend that one should not work more than 6 minutes in a standing or squatting postures and should not work more than 4 minutes in a bending posture. Application: The results of this study could be used to design and assess working environments and methods. Furthermore, these results could be used to suggest ergonomic guidelines for the lower limbs postures such as squatting and bending in the working fields in order to prevent fatigue and pain in the lower limbs body.

기혼 직장여성의 출산의도 결정요인에 관한 연구 (A Study on the Determinants of Married-Working Women's Childbirth Intention)

  • 장한나;이명석
    • Human Ecology Research
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    • 제51권4호
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    • pp.425-438
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    • 2013
  • Postponing childbirth is becoming increasingly common and consequently serious social problem in Korea, among married-working women. It is relatively unknown which factors determine married-working women's childbirth intention. This study investigated the effects of demographical factors, labor market factors and social support factors on married-working women's childbirth intention. Data from a national survey of married-working women (Korean longitudinal survey of women and families) are used in this study. The findings are as follows. First, logistic regression analyses that married-working women's childbirth intention could be predicted by 1) personal characteristic factors such as age (p <.000), education level (p<.029), parenthood (p<.000) monthly pay (p<.01); 2) husband support factors, such as satisfaction with division of household labor (p<.009), time with family (p<.049) influence of family life on work (p<.083); and 3) institutional support factors such as regular position (p<.015), regression analysis showed similar results. Personal characteristic factors and husband support factors had statistically significant effects on the number of future children. Personal value factors such as traditional family support (p<.05) proved to be the best predictor of the number of future children. Institutional support factors, on the other hand, did not have statistically significant effect on the number of future children. In a nutshell, personal characteristics and husband support proved to be the most important determinant of married-working women's childbirth intention. The findings suggest that family friendly policy and flexible labor market policy will impact married-working women's childbirth intention.

부산항 항만하역근로자의 근무환경에 대한 인식이 직무만족과 조직몰입에 미치는 영향 (Effect of Cargo Employee Recognition of Work Environment on the Job Satisfaction and Organizational Commitment in the Port Industry)

  • 김태민;하명신;최성광
    • 한국항만경제학회지
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    • 제34권4호
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    • pp.85-104
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    • 2018
  • 본 연구는 부산항 항만하역근로자들의 근무환경에 대한 인식이 어떠한지 요인별로 파악하고, 직무만족과 조직몰입에 미치는 영향을 규명하는데 그 목적을 두고 있다. 연구의 대상은 부산항에 근무하고 있는 항만하역근로자들 중 부산항운노동조합 소속 부두조합원들을 대상으로 한정하였으며, 설문지는 부산항 북항과 신항을 대표하는 신선대 터미널, PNC 터미널 등을 직접 방문을 통하여 회수하였다. 가설의 검증결과 교육복지, 직무태도, 동료관계, 인사제도, 고용안정 등은 조직몰입에 유의미한 정의 영향을 미치는 것으로 나타났으며, 교육복지, 직무태도, 동료관계, 인사제도, 업무시간 등은 직무만족에 유의미한 정의 영향을 미치는 것으로 나타났다. 특히 임금이 조직몰입이나 직무만족에 유의미한 영향을 미치지 않는 부분은 기존 선행연구와 다른 점으로 갱단위로 작업하는 항만하역작업의 특수성이 반영된 결과로 볼 수 있다. 항만하역 산업이 인력의존도가 높고 작업반을 단위로 하는 협업이며 따라서 직무태도나 동료관계 등의 요인이 중요한 산업임에 따라 본 연구의 결과는 항만하역 산업 발전전략의 기초자료로 활용될 수 있을 것으로 사료된다.

How Much Does My Work Affect My Health? The Relationships between Working Conditions and Health in an Italian Survey

  • Ronchetti, Matteo;Russo, Simone;Di Tecco, Cristina;Iavicoli, Sergio
    • Safety and Health at Work
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    • 제12권3호
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    • pp.370-376
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    • 2021
  • Backround: Working condition surveys are widely recognized as useful tools for monitoring the quality of working life and the improvements introduced by health and safety policy frameworks at the European and national level. The Italian Workers' Compensation Authority carried out a national survey (Insula) to investigate the employer's perceptions related to working conditions and their impact on health. Methods: The present study is based on the data collected from the Italian survey on health and safety at work (INSULA) conducted on a representative sample of the Italian workforce (n = 8,000). This focuses on the relationship between psychosocial risk factors and self-reported health using a set of logistic and linear regression models. Results: Working conditions such as managerial support, job satisfaction, and role act as protective factors on mental and physical health. On the contrary, workers' risk perceptions related to personal exposure to occupational safety and health risks, concern about health conditions, and work-related stress risk exposure determine a poorer state of health. Conclusions: This study highlights the link between working conditions and self-report health, and this aims to provide a contribution in the field of health at work. Findings show that working conditions must be object of specific preventive measures to improve the workers' health and well-being.

운전자본관리가 기업성과에 미치는 영향 (The Effect of Working Capital Management on Corporate Performance)

  • 감형규;신용재
    • 한국산학기술학회논문지
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    • 제17권6호
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    • pp.173-180
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    • 2016
  • 본 연구는 한국거래소의 유가증권시장에 상장된 기업들을 대상으로 운전자본관리가 기업성과에 미치는 영향을 살펴보았다. 운전자본과 기업성과는 각각 매출액 대비 순운전자본의 비율과 총자산영업이익률로 측정한 변수를 이용하였다. 연구의 주요 결과는 다음과 같다. 첫째, 전체 표본을 대상으로 실시한 분석에서 운전자본과 기업성과 간에 유의한 관계를 확인할 수 없었다. 둘째, 운전자본이 음(-)인 집단을 대상으로 실시한 분석결과, 운전자본의 계수가 유의적인 +0.013로 나타나 운전자본이 기업성과에 유의한 양(+)의 영향을 미침을 확인하였다. 반면, 운전자본이 양(+)인 집단의 경우, 운전자본의 계수가 유의한 -0.016으로 추정되어 운전자본과 기업성과 간에 유의적인 음(-)의 관계가 존재함을 보였다. 이러한 결과는 최근 해외연구에서 밝혀진 바와 같이 국내 기업에서도 운전자본의 적정보유수준이 존재할 수 있음을 시사한다. 셋째, 재무적 제약을 고려한 운전자본과 기업성과 간의 관계를 분석한 결과, 재무적 제약이 운전자본과 기업성과의 관계에 별다른 영향을 미치지 못하는 것으로 나타났다. 이는 재무적 제약을 지닌 기업과 그렇지 않은 기업 간에 특별히 다른 운전자본정책이 실행되지 못하고 있음을 시사한다. 그동안 국내 상장기업을 대상으로 운전자본과 기업성과의 관계를 다룬 연구가 거의 존재하지 않는다는 점을 고려할 때 본 연구는 향후 관련 연구의 활성화에 기여할 것으로 기대된다.

미용사의 직무만족도와 직업관 (Beauty Shop Workers' Views of Job)

  • 오애자;남철현
    • 한국학교ㆍ지역보건교육학회지
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    • 제2권1호
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    • pp.67-84
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    • 2001
  • This study was conducted to examine beauty shop workers' views of job. Data were collected from the workers in Seoul, Daegu, Pohang, Junjoo, and Kimhae from June 1, 2000 to August 31, 2000. The results of this study are summarized as follows. 1. According to general characteristics of the subjects, 28,7% of them was female; 94.2% 'specialized in hair'; 46.4% 'below twenty nine years old'; 47.1% 'married'; 59.7% 'highschool graduate'; 33.9% 'worked for below three years'; 28.5% 'monthly income of five hundred thousand to nine hundred ninety thousand won'; 62.3% 'working for above twelve hours a day' ; 41.0% 'above five workers' ; 40.6% 'working in city'. 2. 54.8% of the respondents thought that they were in good health. 76.3% of them smoked and 54.8% drank. 62.8% of them did not exercise and 78.7% was under stress. 61.5% responded that they chose the job because of its possibility of professional vocation. 91.0% of them obtained the beauty skill from beauty schools. 3. Among the factors which influenced job satisfaction, 'stable job and life security' was highest(43.9%), while 'interest in the job and amount of pay' was lowest(3.2%). 'Personal ability and use of originality' was 19.4% and 'harmonious relationship with fellow workers' was 18.1%. 'Job environment' was 7.1% and 'harmonious relationship with higher workers' was 4.5%. 4. The level workers' view of job was $113.8{\pm}17.3$ points on the basis of 150 points. On the basis of 75 points, each item showed it points in order of self-development($22.3{\pm}3.8$), service for customers($20.1{\pm}3.1$), vocational mission($15.6{\pm}3.1$), harmony with the others($18.9{\pm}3.5$), working environment($18.6{\pm}3.6$), and working condition($14.3{\pm}5.1$). 5. Among the reasons why they considered leaving the job, 24.0% of them considered it because they could not free time, while 15.4% considered it because undesirable living environment or long distance from home. 15.0% thought it because they could not receive proper treatment as much as they worked and 12.8% thought they overworked. 6. When they move into new working places, they consider such factors as good working environment(24.1%), good place to open their own beauty shops(16.7%), good beauty shop to learn beauty skill(15.6%), chance to have job training(9.5%), and close place from home(9.0%). 7. 40.6% of the respondents wanted to leave the job, while 32.3% of them did not want to leave the job. The intention of leaving the displayed significant difference in the variables of age, working period, monthly income, marital status, the number of workers, location of the shop, rank, and reason of selecting the job. 8. According to the results of a regression analysis of factors which influenced job satisfaction, it was affected significantly by intention of leaving job, the number of workers, health condition, level of stress, and monthly income. The beauty shop workers showed low satisfaction level with working environment, working condition, and working mission, They considered leaving the job because of lack of free time, overwork, poor working environment, improper treatment, etc. Therefore, related professionals and organizations must device adequate measures in order to make them work with pride as creators of beauty.

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잠재프로파일분석을 통한 임금근로자의 위험요인 노출 유형분류 및 영향요인 검증 (Classifying Latent Profiles in the Exposure to Hazard Factors of Salaried Employees)

  • 이은진;홍세희
    • 한국산업보건학회지
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    • 제31권3호
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    • pp.237-254
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    • 2021
  • Objectives: This study aims to classify the latent profiles in the exposure to hazard factors of salaried employees and test the determinants. Methods: Latent profile analysis(LPA) was conducted using data from the fifth Korean Working Conditions Survey(KWCS). 30,050 of salaried employees were the subjects of this study. After classifying the employees, multinomial logistic regression was used to test the determinants. Results: Salaried employees were classified with three latent profiles based on the exposure to the hazard factors. Employees included in class 1(32.8%) tend to experience low level of physical hazard factors, moderate level of psychological hazard factors, and high level of office work hazard factors. Employees included in class 2(61.8%) tend to be exposed to the moderate to high level of physical hazard factors, moderate to low level of psychological hazard factors, and low level of office work hazard factors. Employees included in class 3(5.4%) tend to experience high level of psychological and physical hazard factors, and moderate level of office work hazard factors. After classification, the demographic, health-, and employment-related variables were tested. Conclusions: This study clarified the features of each class, and proved that employees in class 3 are quite hazardous in that they are exposed to physical and psychological hazard factors much more frequently than other employees. Thus, this study can be used in predicting the high-risk employees and taking preemptive measures for preventing industrial accidents.

근무자세가 두통/눈의 피로에 미치는 영향: 제5차 2017년 근로환경조사 (Effects of Working Postures on Headache/Eye Strain in Korean Waged Workers: The 5th Working Condition Survey(2017))

  • 김유현;고석재;조경민;채진경;오현정;장세진
    • 한국산업보건학회지
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    • 제32권2호
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    • pp.116-128
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    • 2022
  • Objectives: The aim of this study was to examine the association of working posture with headache/eye strain in Korean waged workers. Methods: Data were collected from the 5th Korean Working Condition Survey. A total of 30,955 workers participated in this study. A four-items of working postures were measured using a 7-point Likert scale, and we categorized them into three groups ('normal', 'moderate', and 'severe') each 4 items. Headache/eye strain were measured using a self-administrative questionnaire ('yes' vs. 'no'). To examine the relationship between the total working postures score and headache/eye strain, we summed a 4-items of working postures. It was categorized into five groups according to the severity of exposures('normal', 'mild', 'moderate', 'severe', and 'very severe'). The multivariate logistic regression analysis was performed using the IBM SPSS(Ver. 25), and a p<.05 was considered significant. Results: The results show that 'fatiguing and painful posture' and 'posture repetitively using hands or arms' were associated with headache/eye strain after controlling for control variables. The total working posture score was positively associated with headache/eye strain. People with higher levels of the total working posture score were more likely to increase the risk of headache/eye strain compared to those of normal(OR: 1.844, 95% CI: 1.549~2.195 for 'mild'; OR: 2.564, 95% CI: 2.152~3.503 for 'moderate'; OR: 4.140, 95% CI: 3.432~4.994 for 'severe'; OR: 7.613, 95% CI: 5.625~10.304 for 'very severe') (p<.05 for trend). Conclusions: These results indicate that inappropriate working postures might play a crucial role in developing headache/eye strain. It is needed to improve the working environment, especially focusing on reducing inappropriate working posture at the organizational level.

주서비스와 보조서비스를 갖는 시스템 설계 (A Design Problem of a System Working at Both Primary Service and Secondary Service)

  • 김성철
    • 경영과학
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    • 제28권3호
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    • pp.15-29
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    • 2011
  • In this paper, we consider a system working at both primary service and secondary service. A server can switch between the primary service and the secondary service or it can be assigned to secondary service as a dedicated server. A service policy is characterized by the number of servers dedicated to the secondary service and a rule for switching the remaining servers between two services. The primary service system is modelled as a Markovian queueing system and the throughput is a function of the number of servers, buffer capacity, and service policy. And the secondary service system has a service level requirement strategically determined to perform the service assigned. There is a revenue obtained from throughput and costs due to servers and buffers. We study the problem of simultaneously determining the optimal total number of servers, buffers, and service policy to maximize profit of the system subject to both an expected customer waiting time constraint of the primary service and a service level constraint of the secondary service and develop an algorithm which can be successfully applied with the small number of computations.

코레일 지식경영 활성화 사례 (The Case of the Knowledge Management Activity of KORAIL)

  • 장영철;이건창;강인원
    • 지식경영연구
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    • 제9권4호
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    • pp.157-178
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    • 2008
  • It is well known in KM (Knowledge Management) literature that a certain amount of knowledge is necessary for KM to contribute to corporate performance to some extent. However, for a company to amass knowledge is very difficult due to limited time and poor understandings from employees. Especially, it becomes harder in public organization where simulating financial motif among members is constrained. In this respect, KORAIL, one of typical and leading public organizations in Korea, shows very unique example in which KORAIL succeeds in catalyzing the knowledge circulation process among members, string the resulted working knowledge, and then sharing it to improve working performance at an individual level as well as team level. This KORAIL case will help understand how important the knowledge circulation speed is to improving the corporate performance.

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