• Journal of the Korean Society of Hazard Mitigation
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• v.6 no.3 s.22
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• pp.1-8
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• 2006

The seismic zone factor is evaluated according to the regional characteristics of seismic response based on the historical and instrumental earthquake data. This study aims at arranging regional seismic characteristics by the analysis of earthquake data recorded in the Korean Peninsula and providing the fundamental data to be used for establishing seismic zone factor considering the domestic seismic characteristics. This paper provides the seismic characteristics in the Korean Peninsula according to the historical and instrumental records and then presents fundamental data for establishing seismic zone factors in domestic region.

• Analytical Science and Technology
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• v.18 no.6
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• pp.520-528
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• 2005

Two biological Certified Reference Materials (CRMs), KRISS 108-04-001 (oyster tissue) and 108-05-001 (water dropwort stem), were prepared by Korea Research Institute of Standards and Science (KRISS)during FY '01. The certified values of these materials had been determined by Isotope Dilution Mass Spectrometry (IDMS) for six elements (Cd, Cr, Cu, Fe, Pb and Zn). Additional analytical works are now progressing to certify the concentrations of a number of the environmental and nutrimental elements in these CRMs. The certified values in a CRM are usually determined by using a single primary method with confirmation by other method(s) or using two independent critically-evaluated methods. Instrumental Neutron Activation Analysis (INAA) plays an important role in the determination of certified values as it can eliminate the possibility of common error sources resulting from sample dissolution. In this study INAA procedure was used in determination of 23 elements in these two biological CRMs to acquire the concentration information and the results were compared with KRISS certified values.

• Nuclear Engineering and Technology
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• v.37 no.5
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• pp.503-510
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• 2005

An instrumental neutron activation analysis was used to measure the concentrations of about 24 elements associated with airborne particulates (PM10) that were collected in the most polluted urban region of Daejeon city, Korea from 2000 to 2002. Using the measurement data for various elements, both the extent of elemental pollution in the study area and the seasonality in their distribution characteristics were examined. Examinations of their distribution patterns indicated that most elements with crustal origin tend to exhibit seasonal peaks during spring, while most elements with anthropogenic origin tend to exhibit seasonal peaks during fall or winter. In order to explain the factors regulating their mobilization properties, the data were processed by a factor analysis. Results of the factor analysis suggested competing roles of both industrial and natural source processes, despite that the study site is located at a downwind position of the industrial complex. Based on the overall results of this study, it is concluded that the site may be strongly impacted by man-made sources but the general patterns of elemental distributions in the study area inspected over a seasonal scale are quite consistent with those typically observed from natural environment.

• The Korean Journal of Rehabilitation Nursing
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• v.19 no.2
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• pp.71-81
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• 2016

Purpose: The purpose of this study was to explore the influence of cognitive function and depressive symptoms on instrumental activities of daily living (IADL) in addition to identify the factors associated with IADL in community-dwelling older adults. Methods: This was a descriptive study with cross-sectional design. Data were collected from July 2013 to June 2014. A total of 143 participants without dementia, depression and disability were enrolled in this study. Cognitive function was measured using Seoul verbal learning test (SVLT), digital span (forward/backward) and fist-edge-palm test. The Korean-IADL and Short Geriatric Depression Scale (S-GDS) were used. Data analysis was performed using descriptive statistics, t-test, ANOVA, Pearson's correlation coefficient, and hierarchical regression. Results: Overall, a multiple regression model revealed that approximately 27.4% of total variability in IADL in the sample of community-dwelling older adults could be explained by the significant 12 variables in this model ($R^2=0.274$, F=5.467, p<.001). Age, having religion and cognitive function were the predictors of IADL in community-dwelling older adults. Conclusion: This study suggest that we need to monitor cognitive function in older to maintain the ability for IADL in older adults. Also, individualized program for improving older adults' IADL should be included in nursing intervention.

• Journal of muscle and joint health
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• v.17 no.2
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• pp.151-161
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• 2010

Purpose: The purpose of this study was to identify the effect of Tai Chi exercise on loneliness, sleep pattern, and instrumental activities of daily living in elderly women. Methods: A quasi-experimental design, a nonequivalent control group pretest-posttest was used. Elderly women who agreed to participated in the study were assigned into an experimental group (n=20) or a control group (n=20). The experimental group participated in Tai Chi exercise program (Sun-style 12 forms) for 50 minutes per session, 2 times a week for 8 weeks. Tai Chi exercise program consisted of 10 minutes for warm-up, 35 minutes for main session, and 5 minutes for cooling down. Study outcomes were measured through study questionnaires. Data were analyzed using Chi-square test, t-test and Mann-Whitney test by SPSS WIN 14.0 program. Results: Compared with the control group, the experimental group showed significant improvement in loneliness (t=-2.733, p=.009), sleep pattern (t=2.552, p=.015), and instrumental activities of daily living (z=-2.171, p=.030). Conclusion: Tai Chi exercise program may be an effective nursing intervention for elderly women.

• The Journal of Asian Finance, Economics and Business
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• v.8 no.2
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• pp.1263-1268
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• 2021

This study investigates how dramatic increase of university and college graduates affects labor market outcomes. Using a series of seven repeated cross sections of the Vietnam Household Living Standards Surveys, this paper analyzed the changes in the rate of returns to higher education attainment along with the increased supply of university and college graduates due to the higher education expansion throughout the 2002-2014 period. The study utilized a ratio of number of university and college students to the number of upper-secondary pupils within each province as an instrumental variable to calculate the effects of higher education expansion on the labor wage. The study found that, with the basic equations, the coefficients for higher education attainment are statistically significant and have positive values for the whole period. Our instrumental variables were found to be valid. For instrumental variable estimation, the return to higher education in IV earning equations was quite high. The findings of this study suggested that the expansion of the higher education system in Vietnam during 2002-2014 had positive effects on wages for those who increased their education attainment due to the reforms and there was a declining trend of the returns to higher education toward the end of the period.

• Korean Journal of Social Welfare
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• v.61 no.2
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• pp.303-324
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• 2009

This study examines the mediating effects of social support on the relationship between health status and depression of the elderly in Korea. Through stratified multi-state random sampling, 1409 individuals aged 65 and over who lived in Seoul and Chunchen, and who had their own children were selected. Social support was composed of three types: emotional support, instrumental and financial support, and included both support-received from and provided to children. The multiple regression model proposed by Kenny and Baron was used. As the results, first, the elderly get more depressed when having lower health status and lower social support. Second, there is a partial mediating effect of social support in association with health status and depression. Comparing by gender, instrumental support received from children, and emotional and instrumental support provided to children are mediators in the link between health status and depression in the case of male. In the case of female, emotional, instrumental and financial support received from children, and instrumental and financial support provided to children shows the mediating effects between health status and depression. The results suggest that social support both received from and provided to children reduces the negative impacts of health status on depression of the elderly in Korea.

• The Journal of Korean Association of Computer Education
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• v.17 no.4
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• pp.1-11
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• 2014

In this study, contents of programming curriculum were designed as instrumental subjects for scientifically gifted students, not for IT gifted ones. Firstly, the programming curriculum consisted of 3 sections; Programming Understanding, Object-Oriented Programming, and Simulation Programming as a result of two semesters. Then, the lectures including project-based and problem-solving tasks were given to scientifically gifted students in a high school during one semester to verify whether they could apply the contents to studies and researches in math or science or not. As a result of this study, the students could improve numerical analysis and simulation program development capabilities in math or science as well as the problem-solving ability based on computational thinking. Moreover, it was proved that the students changed their perception about programing learning. They started to think that programing learning was necessary to studies and researches in math or science. The results of this study propose guideline to design programming curriculum as instrumental subjects for scientifically gifted students.

• Korea journal of population studies
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• v.30 no.3
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• pp.157-178
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• 2007

This study examines the features of Korean kinship relationships from the comparative perspectives. Based on ISSP (international Social survey program) data, it analyzes the degree of kinship contact and the source of instrumental and emotional social supports. The results show that the contact frequency among Korean kin is relatively low, and the instrumental social supports are more active than emotional social supports. Focusing on the fact that the lower contact frequency among Korean kin cannot be easily explained either the degree of Economic development nor the familism tradition, this study suggests that the hierarchical collectivism inhered in confucian tradition is responsible for the sparse kinship contact. Regarding social supports, results confirm the strong instrumental familism among Koreans. The relationship between hierarchical collectivism and lower emotional support from kin is also discussed. In addition, this study notes that lower extent of emotional support among kin cannot be identified with lower social solidarity among them.

• Journal of Family Resource Management and Policy Review
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• v.19 no.3
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• pp.41-62
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• 2015

The purpose of this study is to investigate the effects of work-family conflict and spousal support resources on parenting stress among working mothers with pre-school children. This study involved a total of 232 working mothers with children enrolled in child care centers in Seoul and Gyeonggi-do as conducting a survey. First, the higher the work-family conflict (inter-role conflict caused by the impact of work on family life), the higher the family-work conflict (inter-role conflict caused by the impact of family life on work). Moreover, the lower the level of spousal support resources (emotional spousal support resources, instrumental spousal resources), the higher the work-family conflict and family-work conflict. The level of parenting stress was higher in working mothers experiencing greater work-family conflict and family-work conflict both and lower levels of spousal support resources for parenting. Second, the number of children and the amount of work-family conflict and instrumental spousal support resources had a statistically significant impact on parenting stress. Thus, the higher the number of children, the greater the work-family conflict, and the lower the level of instrumental spousal support resources, the higher the level of parenting stress. The findings of this study highlight the relative effects of role conflicts between work and family and of spousal support resources on parenting stress in working mothers. Husbands' being involved in parenting, in particular, was identified as an important support function for healthy child-rearing by successfully combining career and family responsibilities.