• Journal of Preventive Medicine and Public Health
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• 제35권4호
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• pp.287-294
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• 2002

Objectives : To examine whether cumulative chronic stress influences the immune status, and to verify the effect of social support on the relationship between these two dimensions in male manufacturing workers. Methods : A total of 39 workers were recruited for this study. A structured-questionnaire was used to assess general characteristics, job characteristics (work demand and decision latitude), psychosocial distress, and social support. The serum levels of CD4 and CD8 were measured as immune markers, and were collected between 8:00 and 10:00am in order to standardize the markers. Nonparametric statistics were used to estimate the differences between job characteristics and the immune markers. Results : General characteristics, and health-related behaviors, were not associated with CD4, CD8 or CD4/CD8. No relationships were found between job characteristics and the mean levels of immune reactivity. These results were consistent, even after controlling for social support. Social support failed to modify the relationship toward work demand, decision latitude or psychosocial distress to CD4, CD8, and CD4/CD8. Conclusion : Cumulative chronic life stress might not influence the immune status, and the effects of social support on the immune function under chronic stress, may not play a crucial role in modifying the relationships. This implication supports that the effect of stress on the immune function may be determined by the characteristics of that stress. further research should effectively considers the type, magnitude and timing of a stress event, and modifiable factors, such as personality traits, coping style, and hormone excretion levels, on the alteration of immune status.

• 보건의료산업학회지
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• 제6권3호
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• pp.1-11
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• 2012

The purpose of this study is to identify the effects of emergency medical technicians' personal traits and job characteristics on job/social stress, job satisfaction, role conflicts, organizational commitment, and self-efficacy. The study population was emergency medical technicians who is working at the hospitals in Yeungnam province. The 200 questionnaires were administered by using ground mail, e-mail, and personal visits and 156 questionnaires were returned(82.5% response rate). Social stress, job satisfaction and role conflicts were significantly determined by personal traits and job characteristic variables. However, job stress, organizational commitment and self-efficacy was only significantly determined by job characteristic variables. In social stress and role conflicts, the subjects with challenge, sociability, acceptance and prudence traits were tend to be significantly higher scores compared to the stability traits. Additionally, among social stress regression models, adding job characteristics to the personal traits model, $R^2$ was increased up to 19% and adding personal traits to the job characteristics model, $R^2$ was increased up to 14%. In conclusion, the study found that personal traits and job characteristics are important variables in explaining social stress, job satisfaction and role conflicts, that would have important managerial implications for recruiting, hiring and managing either new or current emergency medical technicians efficiently.

• 한국기계가공학회지
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• 제21권6호
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• pp.50-59
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• 2022

The design of the substrate significantly affects the thermal history and the residual stress formation in the vicinity of a repaired region by a directed energy deposition (DED) process. The occurrence of defects in the repaired region depends on the thermal history and residual stress formation. The objective of this study was to investigate the influence of the inclined angle and depth of the substrate on the thermal and residual stress characteristics in the vicinity of a repaired region by a DED process through two-dimensional finite element analyses (FEAs). The temperature and residual stress distributions in the vicinity of the repaired region were predicted according to the combination of the inclined angle and depth of the substrate. The effects of the inclined angle and depth on the depth of the heat affected zone and the maximum value of the residual stress were examined. A proper combination of the inclined angle and depth of the substrate was estimated to decrease the residual stress in the vicinity of the repaired region.

• 한국주거학회논문집
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• 제19권3호
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• pp.1-10
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• 2008

When environmental elements such as heat, light, air, and sound conditions were suited for the human life, it makes for the welfare and comfortableness of dwellers. This study about residential environmental stress based on environmental psychology very importance because dwellers' background characteristics have an impact on their residential environmental stress levels and it was related to dwellers' satisfaction and well-being. Research about stress connected with residential environment is very important. One's residential environment has direct effects not only on the physical environment but also on family values and expectations, actions, attitude etc. The purpose of this paper is to: 1) identify the general trends of residential environmental stress 2) analyze the differences in socio-demographic characteristics and how the physical characteristics of buildings affect stress. The samples in this study consisted of dwellers living in multi-family housing in Gwang-ju, South Korea. The city was divided into 5 districts and used quota sampling. 324 housewives were sampled from the households by self-administered questionnaires. The survey was conducted in December of the year 2006 after the questionnaire was revised based on the results of preliminary survey.

• 한국안전학회지
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• 제26권2호
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• pp.77-82
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• 2011

Recently, personal characteristics of organizational members arc regarded as an important factor that affects performance of organization. In addition, job stress is attributed to one of main factors that result in poor work ability and high turnover rate. In this study, job stress, work ability and DISC personality types were surveyed targeting 292 of foreman in shipbuilding company. The relationships between job stress and personal characteristics including personality types and correlation between job stress and work ability were analyzed based on the result of survey. As a result of statistical analysis, there were six statistically significant relationships between job stress and age, job tenure, work type, hobbies, exercise, personality types. On the other hand, there was a statistically significant relationship between work ability and exercise. Furthermore, negative correlation between job stress and work ability were found. In accordance with these analysis, this study presented how to improve work ability by managing job stress items and personal characteristics that affect the stress and the stress level.

• 한국노년학
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• 제29권3호
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• pp.1183-1196
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• 2009

본 연구는 장기요양보호 노인특성 및 부양자특성과 부양스트레스의 전반적 경향을 살펴보고, 부양자의 스트레스에 대한 노인 및 부양자특성의 상대적 영향력을 알아보기 위해 실시되었다. 이를 위해 부산, 대구, 경북지역에 거주하는 장기요양보호 3등급 노인의 부양자 105명을 임의 표집하여 질문지법을 사용하여 자료를 수집하였다. 연구결과 부양자의 시간의존 스트레스는 노인의 의존도와 부양자의 건강이 그리고 자기발전스트레스는 노인과 부양자의 관계의 질, 노인의 의존도, 부양자연령, 그리고 부양자건강 순으로 영향을 받는 것으로 나타났다. 또한 신체적 스트레스는 부양자건강과 노인의 의존도 순으로, 그리고 사회적 스트레스는 부양자건강, 관계의 질, 그리고 노인의 의존도 순으로, 마지막으로 정서적 스트레스는 관계의 질에 유의한 영향을 받는 것으로 나타났다. 본 연구결과를 기초로 장기요양보호노인의 부양자 스트레스 감소를 위한 실천적 함의가 논의되었다.

• 한국융합학회논문지
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• 제8권9호
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• pp.105-115
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• 2017

이 연구는 철도신호를 포함한 철도전기 분야 근무자를 대상으로 이들의 스트레스에 영향을 미치는 철도 관련 근무 특성을 알아보고자 하였다. 2017년 2월 13일부터 3월 10일까지 자기기입식 설문을 실시하여 최종 445건에 대해 분석을 실시하였다. 객관적 근무 특성에는 총 근무기간, 현 근무지, 근무형태, 열차 운행 횟수, 열차 노선유형, 담당하는 열차 종류, 장애/사고 투입 횟수, 휴일 출근 여부, 근무시간을 포함하였으며 주관적 근무 특성에는 직장생활만족도, 주관적 업무 강도를 포함하였다. 이변량 분석결과 모든 철도 관련 근무 특성별로 스트레스에 차이를 보였다. 다변량 분석 결과 총 근무기간, 열차 운행 횟수, 담당하는 열차 종류, 휴일 출근 여부, 직장생활만족도, 주관적 업무 강도가 스트레스의 영향요인으로 확인되었다. 객관적 근무 특성과 스트레스와의 관계에서 주관적 근무 특성들의 조절 효과는 확인되지는 않았다. 따라서 이들 스트레스 영향요인에 대한 회사 차원의 관심 및 스트레스 관리가 필요할 것이다.

• Transactions on Electrical and Electronic Materials
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• 제4권6호
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• pp.32-37
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• 2003

In this paper, the trap characteristics of thin silicon oxides is investigated in the ULSI implementation with nano structure transistors. The stress and transient currents associated with the on and off time of applied voltage were used to measure the distribution of high voltage stress induced traps in thin silicon oxide films. The stress and transient currents were due to the charging and discharging of traps generated by high stress voltage in the silicon oxides. The transient current was caused by the tunnel charging and discharging of the stress generated traps nearby two interfaces. The stress induced leakage current will affect data retention in electrically erasable programmable read only memories. The oxide current for the thickness dependence of stress current, transient current, and stress induced leakage currents has been measured in oxides with thicknesses between 113.4nm and 814nm, which have the gate area 10$\^$-3/ $\textrm{cm}^2$. The stress induced leakage currents will affect data retention, and the stress current and transient current is used to estimate to fundamental limitations on oxide thicknesses.

• 대한안전경영과학회지
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• 제10권2호
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• pp.25-31
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• 2008

The purpose of this paper is to review the relationship between job characteristics and job stress responses(physiological response, psychological response, behavioral response), and the moderating effect of social support. Based on the responses from 187 employees in small & medium manufacturing industry, hierarchical regressional analysis showed that job characteristics factors have partly negative relationships with job stress response. However, job variety has positive relationship. Social support has partly moderating effect on the relationship between job characteristics and job stress.

• 펄프종이기술
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• 제38권4호
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• pp.10-16
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• 2006

The study was carried out to investigate how the refining of pulps affects the stress-strain characteristics and physical properties of paper. SwBKP and HwBKP were refined with Hollender laboratory beater to obtain three levels of freeness(500, 400 and 300 ml CSF) at the different consistencies(0.5% and 1.0%). The effects of fines were also evaluated. The stresses and strains of papers made from SwBKP and HwBKP were increased with refining. The absolute value of strain in paper made from SwBKP was higher than those of paper made from HwBKP. We also found that the presence of fines increased the stress and strain significantly in both pulp types. The refining at lower pulp consistency gave higher stress and strain properties. Most physical properties of paper were improved with refining, but the effect of refining consistency depended on the characteristics of each physical properties.