• 터널과지하공간
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• 제1권2호
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• pp.181-203
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• 1991

The effects of geologic structures such as rock joins and bedding planes on the thermal conductivity of a discontinuous rock mass are studied. The expressions for the equivalent thermal conductivities of jointed rock masses are derived and found to be anisotropic. The degree of anisotropy depends primarily on the thermal properties contrast between the joint phase and surrounding intact rock, the joint density expressed as volume fraction and the inclination angle of the joint. Within the context of 2-dimensional finite element heat transfer scheme, the isotherms around a circular hole are analyzed for both the isotropic and anisotropic rock masses in 3 different thermal boundary conditions. i.e. temperature, heat flux and convection boundary conditions. The temperature in the stratified anisotripic rock mass is greatly influenced by the thermal properties of the rock formation in contact with the heat source. Using the excavation-temperature coupled elastic plastic finite element method, analyzed is the thermo-mechanical stability of a circular opening subjected to 10$0^{\circ}C$ at a depth of 527m. It is found that the thermal stress concentration was enough to deteriorate the stability and form a plastic yield zone around the opening, in contrast to the safety factor greater than 2 resulted form the excavation-only analysis.

• 보건교육건강증진학회지
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• 제33권1호
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• pp.33-40
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• 2016

Objectives: The study aimed to determine the prevalence of and the relationship between stress and musculoskeletal symptoms among undergraduate students. Methods: The convenience sampling method was used for this cross-sectional survey that was conducted from June 16, 2014 to June 21, 2014. A total of 223 subjects (88 men, 135 women) participated in the study and completed a comprehensive self-administered questionnaire requesting information on demographics, medical history, lifestyle, and musculoskeletal symptoms. The Depression Anxiety Stress Scale (DASS) was also administered to the subjects. A total of 223 subjects from 12 universities completed the questionnaires; the data obtained was used for the final statistical analysis. Results: Women had a higher prevalence of stress and musculoskeletal symptoms. Adjusting for sex and age, subjects who were stressed had a 2.85-fold higher risk of musculoskeletal symptoms than subjects who were not stressed. Stratified analyses by sex also showed that women had a higher risk of musculoskeletal symptoms (Modified OR 2.98, 95% CI 1.38-6.45). Conclusions: We found a positive association between stress and musculoskeletal symptoms in undergraduate students; sex differences were present. Further dose-response relationship between stress and musculoskeletal symptoms will be identified by a longitudinal study with a larger sample size.

• Child Health Nursing Research
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• 제11권1호
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• pp.34-42
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• 2005

Purposes: The purposes of this study were ① to identify the rate of suicide attempts, and ② to investigate relevant variables(family dynamic environment, personality factors) and risk factors for attempting suicide among Korean adolescents. Method: Data were collected through a questionnaire survey. Internal consistencies for this questionnaire ranged from 0.63 to 0.88. Nine hundred and twenty two adolescents were surveyed (delinquent : 367, student : 555), using a proportional stratified random sampling method. Statistical methods employed were chi-square, t-test, and logistic regression analysis. Results: ① The rate of suicide attempts was 10.8％ for the total sample, and the delinquents(19.6％) had a higher rate of suicide attempts than the students(5.1％). ② Adolescents attempting suicide had a greater dysfunctional family dynamic environment and more maladaptive personality than those who did not attempt suicide. ③ Risk factors for suicide attempts among Korean adolescents were way of coping, psychosomatic symptoms, and parental child-rearing attitudes, in that order. Conclusions: Suicide and suicidal behaviors are multifaceted events. For suicide prevention, there is a need to make an independent assessment of the variables such as familial problems, personality and dynamic environment of the families of the adolescents.

• Journal of Preventive Medicine and Public Health
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• 제36권2호
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• pp.108-116
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• 2003

Objective : To determine the relationships between customer's attitude, the subjective norm and the intention to use hospital-based health promotion services. Methods : This study was based on the theory of reasoned action, suggested by Fishbein and Ajzen. The subjects of this study were 501 residents of Seoul, Bun-dang, Il-san and Pyung-chon city, under 65 years, who were stratified by sex and age. A covariance structural analysis was used to identify the structural relationships between attitude towards health promotion programs or services, their subjective norm and their intention to use the aforementioned services. Results : The subjective norm for using the health promotion programs or services provided by hospitals was a significant predictor of the intention to use, but the attitude towards the services was not significant Conclusions : Our results suggest that a customer's reference group affects their use of the hospital-based health promotion services. Because the subjects of this study were restricted to specific urban areas, there are limitations to generalizing the study results. Despite the limitations of these results, they can serve as baseline information for the understanding of consumers behavior toward hospital-based health promotion services.

• 가정과삶의질연구
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• 제22권6호
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• pp.233-242
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• 2004

The main objective of this study is to provide baseline data and materials to be used for developing an manners education program. Such an educational program will help enhance the manners of university students. A stratified random sampling method was applied to collect data. Originally, 800 questionnaires were distributed to university students during the period between May 10 and May 31, 2m, and of the completed questionnaires, 7n3 were used for data analysis. 'The following findings were obtained:1. University students 'level of everyday manners was shown to be moderate, and the mean score was 6.76 (67.61/100 Points). 2. The level of demands for everyday manners education was shown to be high and the mean score was 8.05 (67.61/100 Points). 3. The variable that had the greatest impact on the level of everyday manners was the subjective knowledge about everyday manners, whereas gender affected the demand for education the most strongly.

• 가족자원경영과 정책
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• 제4권1호
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• pp.95-111
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• 2000

The family financial management is the important element which has a effect on the improvement of family economic well-being. Thus the study sets up human & material resources and requirement as an input factor, family financial management as an throughput factor, and economic well-being as an output factor, and then identifies if there are some relationships among them by using a systematic approach of family financial management. The questionaires were distributed to 600 employed wives by carrying out cluster sampling and disproportional stratified sampling. The 573 cases of them were used as the mean, ratio, Pearson’s Correration, ANOVA, factors analysis, and Stepwise Regression using the SAS/PC+. The major findings of the study are as follows: 1) A practical application of information as on input variable, appears the fator which has an important effect upon the throughput factor, that is, family financial management. The employed wives should manage a lot of resources in rapidly changing social-economic circustances. So it shows that not only they should take informations open to their daily life and then make practical use of them in managing their family finance, but also they must be capable of judging and accepting reasonable informations in order to gain and manage resources suitable to the characteristics of family finance and family members’need. 2) There was significant relationship between the employed wives’family financial management and family economic well-being, focused on the systematic theory of family financial management. This study provides for the information to develope the program for the employed wives’family financial planning and counseling.

• The Journal of Asian Finance, Economics and Business
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• 제7권8호
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• pp.577-588
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• 2020

The study investigates by empirical methods the effect of motivation, leadership, and organizational culture on job satisfaction, and employee performance at Wahana Resources Ltd North Seram District, Central Maluku Regency, Indonesia. This examination intends to be a critical review for academics researching the field of human resources management (HRM). The study's sample consisted of 155 employees who were selected using the Proportionate Stratified Random Sampling method. At the same time, data were collected using a questionnaire and then analyzed using the Structural Equation Modeling on Amos. The results of data analysis showed that work motivation and organizational culture had a positive and significant effect on performance, but did not significantly influence employee job satisfaction. While leadership has a substantial impact on employee job satisfaction, it does not affect performance. The results of testing the coefficient of determination show that job satisfaction is influenced for 57.4% by motivation, leadership, and culture variables, while employee performance variables are influenced for 73.5% by motivation, leadership, culture, and job satisfaction variables. Other factors outside this study influence the rest. Motivation, leadership, and organizational culture of employees need to be improved to increase job satisfaction. Invariably, if employee job satisfaction increases, employee performance will also increase.

• The Journal of Asian Finance, Economics and Business
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• 제7권11호
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• pp.563-573
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• 2020

This research examined the effect of KHD Leadership toward Sustainable Shareholder Value and mediated by IT & Business Strategy Alignement and Integrated Supply Chain Management. Therefore, with this research, it is expected to be able to develop the KHD Leadership in State-owned enterprises' (SOEs) Indonesian. The population in this study were all echelon 1, 2, and 3 employees in the PT Pupuk Kalimantan Timur, PT Pupuk Petrokimia Gresik, PT Pupuk Sriwidjaja Palembang, PT Pupuk Kujang Cikampek, PT Pupuk Iskandar Muda, as many as N = 1002 people. The appropriate sampling technique used is Proportional Stratified Random Sampling (n=300 employees). The statistical analysis used is SEM-WarpPLS method. IT & Business Strategy Alignement and Integrated Supply Chain Management significant and positive on Sustainable Shareholder Value. IT & Business Strategy Alignment and IT Integrated Suppy Chain Management is a mediating variable between the influence of KHD Leadership on Sustainable Shareholder Value. Novelty in this research is the development of Ki Hadjar Dewantara Leadership as the development of the concept of Javanese leadership that grows inherent in Indonesian society, especially Javanese society and is believed to be applicable in business and industrial organizations in Indonesia, of course it can also be implemented in Pupuk Indonesia Holding Company.

• 대한안전경영과학회지
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• 제9권1호
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• pp.77-84
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• 2007

This study was planned to investigate what the main factor of the regulation compliance of inspection on harmful machine, instrument and equipment by industrial safety and health act is. This study subject was composed of three groups as employers, employees of manufacturing and using the harmful machine and safety inspectors. Manufacturing workplace were 236 places, using workplace were 201 places and the safety inspectors were 100 people. The study subject was sampled by stratified random sampling considering the type of harmful Machine. Data for analysis is collected from each sample using interview with structured questionnaires. Compliance is measured by 2, 3, and 4 point scale composed by 8 sub items such as general perception, understanding, clearness, necessity, relevancy, implementation, penalty, and general compliance of the regulation. The level of 8 items of employer's compliance are not differentiated among three groups. The determining factors for inspection observance of the workplace using the harmful Machine were understanding, penalty and cognized compliance. The determining factors for inspection observance of the workplace manufacturing the harmful Machine were understanding and object conformity. These results show that the strategy to adapt the regulated group to inspection regulation will be the elevation of understanding for regulation first of all.

• 한국보건간호학회지
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• 제19권2호
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• pp.188-203
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• 2005

The study was performed to provide basic data for developing a coordinated health and social service model. Method: The subjects consisted of 1000 residents in Wonju city. The sampling process was randomized stratified into 26 geographical areas. The data was collected from Apr. 16nd, to May. 15nd, 2002 by using a structured questionnaire that included general characteristics, the patterns of disease, the family function and the community support systems. The collected data was analyzed by the SPSS. windows program via descriptive statistics, correlation testing and t-tests. Result: 61.7% of the elderly perceived their health status as being poor. There were correlations among age, income and the way clients perceived their health status. The prevalence rate of chronic disease was 70.8% in the elderly. The prevalence rate for arthritis was the highest (33.6%). The average number of diseases in the target populations was 2.31; it was 2.65 in the deprived elderly group and 2.47 in the elderly group. 35.4% of residents did not have any family care giver. 61.2% of the clients needed support by the health and social services. Conclusions; Coordinated health and social services need to be allocated by priority to the elderly and to the socially and economic deprived clients.