• Korean Journal of Construction Engineering and Management
• /
• v.6 no.1 s.23
• /
• pp.58-64
• /
• 2005

We should consider climatic factors influencing construction works in order to estimate construction time correctly. This study is to analyze climate elements affecting construction duration and to calculate non-working days far Inchoen territorial region. Through surveying literatures and examining several existing criteria we suggest a Proper criteria for each climate elements which would be used for estimating non-working days. The criteria is made on the raw climate data of Meteorological Administration during the last 30 years(1974-2003) far Incheon region. In case of rainfall, it is estimated as non-working days when daily precipitation is expected more than 10mm, its number of days for Incheon is 29 days. In case of low temperature, the number of non-working days for the concrete works(its criteria be below $4^{\circ}C$ average) and the finishing works(below $0^{\circ}C$ average) is 97 days, 52 days, respectively. In case of high temperature, it is three days when daily highest temperature is expected going over $32^{\circ}C$

• Journal of Families and Better Life
• /
• v.5 no.2
• /
• pp.109-125
• /
• 1987

Previous studies show that working wives in the market contribute to the family economy that affects the family member's behaviors as consumers. Accordingly, the consumer behavior among working wives would be differ form that among nonworking wives. As the number of working wives in the market is increasing, this study focuses on the estimation of the degree of rationality in purchasing decision making among wives in relation to their working status. Therefore, this study attempts to construct an rationality index of a purchasing decision making both at a high and a low involvement situation by working and nonworking wives, and analyzes the differences in the results of the two groups. This study also examines how the rationality indices vary with the selected socioeconomic variables. The data are obtained from self-administered questionnaires from a sample of 217 working and 191 nonworking wives at Seoul and Seongnam in 1986. The statistical methods used in this study are Factor Analysis, Multiple Regression, and Analysis of Variances. The major findings of this study are as follows; 1) The mean value of the rationality index among nonworking wives is higher than that among working wives. Under a high involvement situation, the mean value of the rationality index among working wives is negative. Therefore, it is likely that nonworking wives make purchasing decisions more rationally than working wives. 2) The higher the degree of wive's education, the more rational the purchasing decision making. Under a low involvement situation, the higher the monthly family income, the more rational the purchasing decision making . under the same situation, the shorter the duration of marriage , the more rational the purchasing decision making. 3) Under a low involvement situation, the rationality indices of working wives vary with their occupations. The rationality indices among those in selling and service jobs are lower than those among those in professional jobs. 4) The impact of the selected socio-economic variables on the degree of the rationality in purchasing decision making differs depending on whether the wife is working or not. Under a low involvement situation, the positive impact of the monthly family income on the rationality in purchasing decision making is stronger among nonworking wives than among working wives. Under the same situation, the negative impact of the duration of marriage on the rationality is stronger among nonworking wives than among working wives.

• 월간산업보건
• /
• s.2
• /
• pp.4-10
• /
• 1988

In order to investigate the prevalence of occupational disease in coal mine workers in Chonnam area, a cross sectional study was conducted in 1,097 workers from September to December in 1987. The results were as follows; 1. The prevalence of pneumoconiosis including suspected cases was 6.9% and was increased by age and working duration. 2. The prevalence of pneumoconiosis excluding suspected cases was 2.8%. 3. By the kind of job, prevalence of pneumoconiosis including suspected cases was l2.9% in tunnel drivers, 6.3% in coalface workers and 6.0% in other workers. 4. The prevalence of noise induced hearing loss was 5.1% and was increased by age and working duration. 5. The prevalence of noise induced hearing loss was the highest among tunnel drivers(7.3%), but it was not significantly different by the kind of job. 6. Occupational disease caused by vibration was not found in coal mine workers.

• Journal of Preventive Medicine and Public Health
• /
• v.20 no.1 s.21
• /
• pp.158-164
• /
• 1987

The purpose of this study is to analyze occupational history of coal miners with pneumoconiosis. In this study, occupational characteristics of 49 coal miners with pneumoconiosis were compared with those of 45 coal miners without pneumoconiosis but in similar age category($43{\sim}52$ years of age) based on interview survey. Various indices on occupational characteristics were developed for the following areas: duration of employment, perception of working condition, working density, dust concentration, temperature, humidity, and experience of respirator wearings. Perception of working condition were measured in 5 points scales but experiences of respirator wearing was measured in 3 points scale. Each index was multiplied by duration of employment. From the analysis, only the experience of respirator wearing showed statistically significant difference between the two groups. Therefore, respirator wearing seemed to be effective in reducing occurrence of pneumoconiosis.

• Journal of Acupuncture Research
• /
• v.18 no.6
• /
• pp.70-83
• /
• 2001

Objective : In order to investigate symptoms prevalence related to visual display terminal(VDT) syndrome, and to evaluate the variables affecting the development of the VDT syndrome. Methods : a questionnaire survey was conducted on 127(81 men and 46 women) VDT operators who had been studied in Soongsil University graduated school in Seoul. Result : As a result of analysis with data collected by questionnaire, l. Variables affecting the level of general symptoms were sex, the total time of VDT operation per day, type of typewriting, location of keyboard, illumination, VDT working duration, the time of VDT operation without rest. 2. Variables affecting the level of eye symptoms were sex, the total time of VDT operation per day, type of typewriting, VDT working duration, illumination, method of eye-resting. 3. Variables affecting the level of musculoskeletal symptoms were sex, the total time of VDT operation per day, the time of VDT operation without rest, illumination. Conculsions : In order to protect workers from VDT syndrome, it is urgently required to implement standard management recommendations including restriction of VDT working hours and allowance of more sufficient resting time for VDT workers.

• Journal of Korean Academy of Nursing
• /
• v.31 no.3
• /
• pp.492-505
• /
• 2001

Purpose: This study aims to find the sources of nurses' conflicts and to find ways to eliminate them for improved nursing care. Method: This study is based on a phenomenological approach. All participants were woking at K-hospital, located in Seoul. The research was performed from September 2000 to February 2001. Data was collected through interviews and observations while participants were working. Interviews lasted a duration of one and half hours and data collection accured five to six times per participant. The data were analysed by Giorgi method and the results are as follows: Result: Essential themes in the professional conflict of clinical nurses emerged (1) The discords of human relationships ; (2) Dissatisfaction with working conditions ; (3) Lack of self-respect in one's professional expertise ; (4) Dissatisfaction with one's work ; (5) Depression accurring due to one's ability as a professional. Conclusion: The foregoing arguments suggest that nurses perform stressful environments in a hospital originating from the relationship among peer group, working conditions, and lack of self-respect as a nurses. Therefore, hospital authorities should strangly consider working conditions, interpersonal relationships, and working conditions in order to promote self-respect of the nurses hospitals.

• Journal of Families and Better Life
• /
• v.23 no.1 s.73
• /
• pp.223-239
• /
• 2005

The purpose of this study is to explore the impacts of personality variables, family variables, job variables, work-family conflict and job satisfaction on life satisfaction of family business workers. The major findings are as follows: 1. There was direct causal effects of job satisfaction, Sunday working level, the duration of the family business, an academic background on life satisfaction of family business workers. 2. Such variables family variables(family size, number of family workers, number of unpaid family workers), working time variables (working hours per a day, saturday working level, flexibility of working time), work-family conflict had indirect causal effects on life satisfaction of family business workers

• Journal of Families and Better Life
• /
• v.11 no.1
• /
• pp.134-148
• /
• 1993

The study was designed to examine the present state of the provider-role consciousness of married working women in Korea and to identify five variable-clusters which were drawn from the theoretical perspectives. The subjects of this study were 573 married working women whose husbands also had their work. The statistical methods adopted for data analyses were frequencies. oneway ANOVA. Scheffe-test t-test, and multiple regression analysis. The major findings of this study can be summarized as follows; 1) The level of the provider-role consciousness of married working women was slightly high. 2) As for the aspects of the individual attribute variables. educational level job income age native area motive of work. and sex-role identity significantly influenced the provider-role consciousness of married working women. 3) Concerning the family background variables marriage duration number of children mother's experience of employment father's educational level and husbands's income were significantly related to the provider-role consciousness of married working women, 4) As for the social relationship variables. degree of participation in social associations significant others' attitudes toward housewife's work degree of domestic role sharing with husband and wife/husband income ration significantly affected the provider-role conscious-ness of married working women. Based on these findings it came to be revealed that multidirectional perspecitves were useful to identify variables which could predict the provider-role consciousness of married working women, Also it was revealed that the significant others' approvals for women's work were necessary to the establishment of the provider-role consciousness of married working women.

• Science of Emotion and Sensibility
• /
• v.14 no.4
• /
• pp.605-616
• /
• 2011

The present study examined memory accuracy for faces with positive, negative and neutral emotional expressions to test whether their emotional content can affect visual working memory (VWM) performance. Participants remembered a set of face pictures in which facial expressions of the faces were randomly assigned from pleasant, unpleasant and neutral emotional categories. Participants' task was to report presence or absence of an emotion change in the faces by comparing the remembered set against another set of test faces displayed after a short delay. The change detection accuracies of the pleasant, unpleasant and neutral face conditions were compared under two memory exposure duration of 500ms vs. 1000ms. Under the duration of 500ms, the accuracy in the pleasant condition was higher than both unpleasant and neutral conditions. However the difference disappeared when the duration was extended to 1000ms. The results indicate that a positive facial expression can improve VWM accuracy relative to the negative or positive expressions especially when there is not enough time for forming durable VWM representations.

• The korean journal of orthodontics
• /
• v.22 no.2 s.37
• /
• pp.389-412
• /
• 1992

Along with form and function relationship of craniofacial growth comes a concern for the masticatory muscles with postnormal occlusion. It is the aim of this study to grope the certain differences upon the electromyographic activities of the masticatory muscles between normal occlusion and class II malocclusion during the varieties of oral functions. 26 persons of normal occlusion whose mean age were 18.9-25.6 years and another 26 persons of class II malocclusion whose mean age were 19.0-28.9 years served for this study. The electromyographic recordings processed by $Medelec^{\circledR}$ MS 25 EMG apparatus were taken from the anterior and posterior temporal, and anterior and posterior masseter muscles of both sides, and suprahyoid muscles as well. Analyses of the data toward such specific activities as mandibular rest, maximal biting, chewing gums and swallowing peanuts turned out the following summary and conclusions. 1. The maximal mean amplitude of the posterior temporalis showed significant augmentation in class II malocclusion, however the anterior temporalis, posterior masseter, and suprahyoid muscles manifested meaningful diminutions. 2. Stronger posterior temporalis and weaker anterior masseter and suprahyoid muscles were arranged in maximal biting with parameters of maximal mean amplitude. 3. The anterior temporalis of working side expressed smaller maximal mean amplitude in class II malocclusion. Significant swelling in duration were shown at anterior and posterior temporalis of working side, and posterior temporalis of balancing side in class II malocclusion, and marked reduction at anterior masseter of balancing side and posterior masseter of working side as well. The lessened latency were expressed at anterior masseter of working side, and anterior and posterior masseter of balancing side. Class II malocclusion group had significant prolongation of silent period duration. Mean silent period duration of 10.75 msec in normal occlusion and 24.37 msec in class II malocclusion were calculated. 4. Significant augmentations of maximal mean amplitude while swallowing peanuts were yielded at right anterior temporalis and posterior temporalis of both sides, however left anterior masseter and right posterior masseter showed diminution. No significant differences in duration showed at every muscle examined in class II malocclusion group.5. Weaker masseter and stronger temporalis were suggested as characteristics of class II malocclusion.