• 한국콘텐츠학회논문지
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• 제18권12호
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• pp.185-196
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• 2018

본 연구는 성인의 지각된 스트레스와 스마트폰 중독과의 관계에서 부적응적 인지적 정서조절전략과 부적 정서의 매개효과를 검증하고, 성인의 스마트폰 중독 상담을 위한 시사점을 찾아보기 위해 수행되었다. 성인 300명(남 146명, 여 154명)에게 지각된 스트레스척도, 부적응적 인지적 정서조절전략척도, 부적 정서척도, 스마트폰 중독진단척도를 실시하였다. 주요 결과를 정리하면 다음과 같다: 첫째, 지각된 스트레스는 스마트폰 중독에 정적인 영향을 미쳤다. 둘째, 지각된 스트레스와 스마트폰 중독과의 관계에서 부적 정서는 매개효과를 나타냈다. 셋째, 지각된 스트레스와 스마트폰 중독과의 관계에서 부적응적 인지적 정서조절 전략의 매개효과는 유의미하지 않았다. 넷째, 지각된 스트레스와 스마트폰 중독 간의 관계에서 부적응적 인지적 정서조절전략과 부적 정서의 이중매개효과는 유의미하였다. 연구결과를 기초로 성인의 스마트폰 중독 예방 및 상담과정에서 스트레스 관리 프로그램과 부적응적 인지적 정서조절전략의 수정을 통한 부적 정서의 완화 필요성이 논의되었다. 또한 후속 연구를 위한 제언을 논하였다.

• 한국응급구조학회지
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• 제23권1호
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• pp.49-60
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• 2019

Purpose: This study was conducted to analyze job stress, ego-resilience, and results of the impact of event scale in order to verify the actual job stress of firefighters and provide baseline data for developing resolution programs. Methods: Data were collected via e-mail from 270 firefighters working at 119 safety centers and firehouses in the regions of Gyeonggi, Chungcheong, Busan, and Gyeongsang-do between the $1^{st}$ and $30^{th}$ of July, 2017. Results: Regarding gender differences in job stress, women ($2.16{\pm}0.65$) showed statistically significant job stress compared to men ($1.93{\pm}0.57$). As for the results of the incident impact of event scale statistically significant differences were observed (p=.001), and ego-resilience in men ($4.15{\pm}0.54$) was significantly higher than that in women ($3.79{\pm}0.75$) (p=.006). Depending on the work period, there were statistically significant differences (p=.000) in job stress, ego-resilience (p=.002), and impact of event scale (p=.000). Conclusion: Since job stress, ego-resilience, and results of the impact of event scale were closely related to dispatch frequency and work period of the firefighters, detailed and continuous stress management programs that consider these factors need to be developed.

• Structural Engineering and Mechanics
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• 제63권2호
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• pp.161-169
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• 2017

In this paper, using consistent couple stress theory and Hamilton's principle, the free vibration analysis of Euler-Bernoulli nano-beams made of bi-directional functionally graded materials (BDFGMs) with small scale effects are investigated. To the best of the researchers' knowledge, in the literature, there is no study carried out into consistent couple-stress theory for free vibration analysis of BDFGM nanostructures with arbitrary functions. In addition, in order to obtain small scale effects, the consistent couple-stress theory is also applied. These models can degenerate into the classical models if the material length scale parameter is taken to be zero. In this theory, the couple-tensor is skew-symmetric by adopting the skew-symmetric part of the rotation gradients as the curvature tensor. The material properties except Poisson's ratio are assumed to be graded in both axial and thickness directions, which it can vary according to an arbitrary function. The governing equations are obtained using the concept of Hamilton principle. Generalized differential quadrature method (GDQM) is used to solve the governing equations for various boundary conditions to obtain the natural frequencies of BDFG nano-beam. At the end, some numerical results are presented to study the effects of material length scale parameter, and inhomogeneity constant on natural frequency.

• 대한기계학회논문집
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• 제14권6호
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• pp.1568-1575
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• 1990

본 연구에서는 중앙균열을 가진 SB41강의 평판이 하중제어와 변형률제어 피로 상태에서 소규모 항복, 대규모 항복, 또는 전면 항복의 각 응력에서 피로균열 진전 속 도와 J적분 범위, .DELTA.J와의 관계를 조사하는 한편, 피로균열 진전 속도를 지배하는 국 소적 역학 인자인 균열선단 개구변위, COD와 균열 진전 속도와 관계 및 그 특성을 고 찰하였다.

• 가정과삶의질연구
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• 제20권4호
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• pp.197-206
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• 2002

The purpose of this study was to examine the effect of marital characteristics on the marital stability among the elderly couples. Each participant was measured using a scale for the concept of marriage, a scale for marital coherence, a marital stress scale, a coping behavior scale and a marital stability scale. Elderly people who have a living spouse and who are living In Seoul were recruited. The data from two hundred and forty participants over 60-years-old were used in the final analyses. Major findings are as follows First, demographic factors such as educational level, health, economic status, the main source of income, and employment status appeared to significantly predict the elderly folks'marital stability Second, gender seems to be a factor In elderly couples'experience of marital stability. Husbands perceived marital stability to be higher than wives did. Third, the perception of marital stress, positive coping behavior and marital coherence influence the marital stability of the elderly couples. That is, the less elderly couples perceived marital stress and the less they relied on negative coping behaviors, the higher they perceived marital stability. These results imply that a healthful coping behavior to marital stress is important in enhancing marital stability for elderly couples.

• 동의신경정신과학회지
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• 제23권3호
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• pp.77-88
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• 2012

Objectives : This study was founded to identify the differences of stress responses, according to Sasang Constitutions (the Taeyangin, Taeumin, Soyangin and Soumin) of highly stressed oriental medicine college students. Methods : The subjects were 76 students who majored in oriental medicine. We processed 'University students Stress Scale', and 'Medical Stress Scale'. We selected 30 students who stressed higher than average. We then processed 'QSCC II (Questionnare for the Sasang Constitution Classification II)' and 'Scale for the Stress Response'. Collected data was analyzed with the SPSS 19.0 for windows statistical program. Results : The university students stress score of oriental medicine students was 1.97 that was higher than the other college students. The medical stress score was 2.77, which was similar with other medical college students. The symptoms of stress score was 2.53, which was higher than the others. Particularly, the depressive syndrome and rage syndrome were highly ranked. The frequently appearing symptoms of each type of Sasang Constitutions (the Taeyangin, Taeumin, Soyangin and Soumin) showed as follows. The Soyangin's symptoms of stress showed in order of Anxiety, Depression, and Emotional irritability. The Soumin's symptoms of stress showed in order of Depression, Emotional irritability, and cognitive disorganization. The Taeumin's symptoms of stress showed in order of Anxiety, Depression, and Emotional irritability. However, there was were no significant differences among the results of each constitution. Conclusions : The results show that oriental medicine students have as much stress as other medical college students and there was tendency of showing different patterns of stress response, according to Sasang Constitution, but it's not significantly different.

• 대한안전경영과학회지
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• 제17권2호
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• pp.55-66
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• 2015

In the perspective of industrial health management, it is important for the employee to decrease their job stress, to improve their productivity and quality of labor. In this study, the job stress, and it's influence on PWI(Psychosocial Wellbeing Index) were investigated by the questionnaire survey of 138 industrial workers who had studied assistive technology in college. The contents of questionnaire consist of the demographic characteristics, job-related characteristics, job stress and psycho-social stress. We evaluated job stress by KOSS-SF(Korean Occupational Stress Scale-Sort Form) and psychosocial stress by PWI-SF(Psychosocial Well-being Index-Short Form). To analyze the results, we evaluated the exposure level of KOSS and PWI by demographic characteristics and job-related characteristics using significance tests. Also, we estimated the relationship among demographic characteristics, job-related characteristics, job stress and psychosocial stress, using correlation analysis. As a results, all workers were found to be in a group under the high risky stress. It showed that the scale index of female's job non-autonomy and pwi were much larger than those of male's. Therefore, to guarantee job autonomy of female workers should be more emphasized, to improve their working environment. Job type had significant relationships with many job stress category; physical environment, job demand, job instability and organization culture. Regarding pwi, the scale index of the workers who is in charge of the civil service such as contacting the disabled and the aged in person, were much larger than that of the other workers. Accordingly, the job stress management program including physical environment, job demand, job instability and organization culture, should be suggested, to decrease the stress of the workers in charge of the disabled and the elders service. The strongest predictors of pwi was organization system through maximum positive relations between organization system and pwi. Therefore, it indicates that improvement of organization system such as a fair merit rating, a manpower supply, demand plan and department cooperation is urgently needed to reduce pwi.

• 치위생과학회지
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• 제21권3호
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• pp.150-157
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• 2021

Background: Stress as a cause of mental health problems is known to be more prevalent in women than in men and has a negative effect on several aspects of physical health, such as the composition of blood and saliva. This study investigated the relationship of perceived stress with blood cell counts, saliva flow rate, and saliva factors. Methods: We recruited women in their 20s with a high prevalence of stress. Stress was evaluated using the Korean version of the perceived stress scale. Blood tests included white blood cell, hemoglobin, and platelet. We then examined the saliva flow rate and cariogenic bacteria level, acidity, occult blood, buffer capacity, leukocyte level, protein level, and ammonia level using rinse water with the SILL-Ha^Ⓡ saliva test system. Results: In a total of 70 participants, the average age was 21.64 years old, the average perceived stress score was 16.96±4.32, and high levels of stress were reported by 80% of the participants (n=56). The high-stress group had lower hemoglobin levels. In addition, the high-stress group showed a lower saliva flow rate than the low-stress group, and there was a difference in the salivary acidity and buffer capacity. The total perceived stress score showed a positive correlation with acidity and negative correlation with buffer capacity and the hemoglobin level. Conclusion: This study found that stress in female college students might affect the composition of blood and saliva. High levels of stress were positively correlated with the hemoglobin level, saliva flow rate, and acidity and negatively correlated with the buffer capacity.

• 보건교육건강증진학회지
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• 제17권2호
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• pp.125-149
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• 2000

The purpose of this study was practiced to investigate factors affecting dental hygienists's stress. The results executed by percentage and Likert scale (on a scale of 5) producing a mean standard deviation, T-test, one way ANOV A and person correlation coefficient using SPSS according to purpose of study. The results of study were as follows: 1. Mean point of stress from administration system dental hygienists's was 3.49 2. The dental hygienists's job place was significantly related to stress from duty volume (p=0.000), stress from personal relation(p=0.028) and stress from atmosphere of job(p=0.000). 3. The dental hygienists's career was significantly related to stress from safe job. 4. The dental hygienists's grade in rank was significantly related to stress from pride ＆ self-conceit. 5. The number of colleague worked public health center was significantly related to stress from duty volume. 6. There is a significant relationship between stress from duty volume and stress from conflict of job(p〈0.01, r=0.280). There is a significant relationship between stress from dissatisfaction and stress from personal relationship(p〈0.001, r=0.396). There is a significant relationship between stress from pride ＆ self-conceit and stress from personal relationship(p〈0.001, r=0.423). There is a significant relationship between stress from personal relationship and stress from atmosphere of job(p〈0.001, r=0.662).

• 가정과삶의질연구
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• 제28권4호
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• pp.29-42
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• 2010

This study examined the effects of ego-resilience and directors' and fellow teachers' social support on childcare teachers' job stress. The participants were 323 childcare teachers in Chung nam Province and Daejeon Metropolitan City. The research instruments were Job Stress Scale by Cho(2004), Ego-resilience Scale by Park(1996) with CPI and CAQ correction, and Social Support Scale by Park(1985). Collected data were analysed by t-test, F test and Scheff$\acute{e}$ test for post hoc test, Pearson's productive correlation and stepwise multiple regression, and Cronbach's $\alpha$ for reliability by SPSS PC program (17.0 version). The results were as follows: First, the childcare teachers' job stress level was low (M=2.51, SD=.63), while ego-resilience level and social support level of directors and fellow teachers (M=3.68, SD=.58; M=3.62, SD=.94; M=3.83, SD=.69, respectively) were above the average. Second, there were significant differences between different levels of ego-resilience and of social support from directors and fellow teachers. Last, directors' social support and childcare teachers' optimistic attitude of ego-resilience were the most dominant variables that affected childcare teachers' job stress level(R2=38.3% for total score of childcare teachers' job stress).