• The Journal of the Korea Contents Association
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• v.12 no.12
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• pp.810-822
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• 2012

The present study aims to investigate the mediating effects of social support in regard of the impacts of stress-coping styles on depression in children from multi-cultural families. In a nutshell, the findings in this study are as follows: First, the stress-coping styles of children from multi-cultural families and depression were found to be negatively related, while social support and depression were negatively correlated. Second, as for the effects of stress-coping styles in children from multi-cultural families on depression, the more passive and active stress-coping styles of children from multi-cultural families, the less their depression, behavior disorder, loss of interest, self-abasement and physical symptoms. Third, high levels of teachers' support partially mediated the relation between stress-coping styles and depression in children from multi-cultural families. This finding implies that children from multi-cultural families, who perceive high levels of peer support, cope with stress better and thus reduce depression.

• Korean Architects
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• no.11 s.82
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• pp.22-25
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• 1975

The aim of this study is the introduction of simplified method for the design stress analysis of multi-span gable frame structures with crane supports. Under the author's assumptions made previously for the same structures of single span, simplified stress analysis and exact computer analysis are excuted for some multi-span sample structures. Comparing the results of both stress analysis and with some modifications, a feasible simplified method for the design stress analysis of multi-span gable frame structures with crane supports is established.

• Journal of Biosystems Engineering
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• v.25 no.6
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• pp.517-526
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• 2000

A series of experiments was conducted to evaluate the capability of detecting nutrimental deficient stress of N, P and Ca of a tomato plant using several fast and intact type physiological properties measuring devices - a chlorophyll content meter an infra-red thermometer to measure leaf temperature a chlorophyll fluorescence meter a porometer an optical spectrometer a multi-scan radiometer and a canopy analyzer. to detect N deficient stress a chlorophyll content meter a spectrometer and a multi-scan radiometer were useful and their possibility to detect was estimated as about 50%, 100% and 100% respectively. To detect P deficient stress the infra-red thermometer the porometer and the spectrometer proved their usefulness an their possibility to detect was estimated as about 70%, 70% and 70% respectively. To detect Ca deficient stress an thermometer a porometer a spectrometer and a multi-scan radiometer were useful and their possibility to detect was estimated as about 60%, 70%,80% and 100% respectively. The experiments resulted that use of a spectrometer and a multi-scan radiometer in combination with a chlorophyll content meter an infra-red thermometer and a porometer were desirable to distinguish the nutrimental stress tested in the study.

• Structural Engineering and Mechanics
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• v.41 no.4
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• pp.495-508
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• 2012

The strength theory of concrete is significant to structure design and nonlinear finite element analysis of concrete structures because concrete utilized in engineering is usually subject to the action of multi-axial stress. Experimental results have revealed that lightweight aggregate (LWA) concrete exhibits plastic flow plateau under high compressive stress and most of the lightweight aggregates are crushed at this stage. For the purpose of safety, therefore, in the practical application the strength of LWA concrete at the plastic flow plateau stage should be regarded as the ultimate strength under multi-axial compressive stress state. With consideration of the strength criterion, the ultimate strength surface of LWA concrete under multi-axial stress intersects with the hydrostatic stress axis at two different points, which is completely different from that of the normal weight concrete as that the ultimate strength surface is open-ended. As a result, the strength criteria aimed at normal weight concrete do not fit LWA concrete. In the present paper, a multi-axial strength criterion for LWA concrete is proposed based on the Unified Twin-Shear Strength (UTSS) theory developed by Prof Yu (Yu et al. 1992), which takes into account the above strength characteristics of LWA under high compressive stress level. In this strength criterion model, the tensile and compressive meridians as well as the ultimate strength envelopes in deviatoric plane under different hydrostatic stress are established just in terms of a few characteristic stress states, i.e., the uniaxial tensile strength $f_t$, the uniaxial compressive strength $f_c$, and the equibiaxial compressive $f_{bc}$. The developed model was confirmed to agree well with experimental data under different stress ratios of LWA concrete.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.1
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• pp.544-552
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• 2016

In this study, the self-esteem by grasping the adaptation state of the stress and school multi-cultural youth, social support, and analyzed the changes that appear in response to them coping with stress. By utilizing the structural equations for that, this study analyzed the relationship between the adaptation to stress and school multi-cultural youth, in terms of coping with stress, social support, and examined the effect of adjusting the self-esteem of the parameters. The results of this study were as follows. Stress multi-cultural youth, social support and self-esteem are affected. On the other hand, a significant effect on coping with stress was not detected. Subsequently, to cope with the stress analyzed, social support, self-esteem effects of the defined parameters revealed a relationship between the adaptation to all stresses and school life.

• Korean Institute of Interior Design Journal
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• v.27 no.1
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• pp.80-87
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• 2018

This study aims to find gender differences in inpatients' privacy and stress concerns in multi-bed hospital room. In the literature review, we consider the characteristics of multi-bed hospital room and patients' privacy as a psychological environment factor. In the survey research, the questionnaires were used to understand the inpatients' general characteristics and privacy requirements. A total of 109 copies were analyzed through a cross-tabulations and T-test using the SPSS 18.0. Results and conclusions are as follows: (1) In the case of multi-bed room patients, there were some gender differences in privacy and stress, but the differences were limited. (2) There is a difference in the patient 's preference of the hospital room according to gender, and this is related to the privacy characteristic. (3) The social communication and strolling are commonly effective stress relief methods for both men and women, so space is needed to do this methods. The meaning of this study is to specify the privacy and stress of the inpatients in multi-bed patients' room.

• International Journal of Advanced Culture Technology
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• v.7 no.1
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• pp.155-161
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• 2019

This study was to identify the effects of home visit intervention program for Holistic Healthcare of multi-culture Couples. It used a non-equivalent control group pretest-posttest design quasi-experimental research. The subjects of this study consist of 20 couples for experimental and control groups. Multi-cultural couples comprised of foreign women married to Korean men in farm and fishery areas. The research tools were used stress index by SA-3000P (Medicare co. Ltd. KOREA), Center for Epidemiologic Studies-Depression Scale (CES-D), and World Health Organization Quality of Life (WHOQOL-Bref). The experimental group of the wives had lower stress index than the control group, the experimental group of the husband showed lower stress index than the control group, (t=-3.14, p=.002). The wife (t=-3.75, p=.001) and husband (t=-4.20, p=.001) of the experimental group showed lower depression scores than the control group. Both the wife (t=3.86, p=.001) and husband (t=5.28, p=.001) showed higher scores for quality of life compared to the control group. It was found that this holistic healthcare home visit program is an effective program to make improvements on stress, depression and quality of life for multi-cultural couples. Therefore, as the intervention program developed in this study is home visits for the holistic health of multi-cultural couples, and it is judged that it can be implemented at the local social health centers or healthcare centers.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.32 no.8
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• pp.642-653
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• 2008

In this paper, we propose a 3-D finite element (FE) analysis model with combined physical behavior and kinematical impact factors for evaluation of residual stress in multi-impact shot peening. The FE model considers both physical behavior of material and characteristics of kinematical impact. The physical parameters include elastic-plastic FE modeling of shot ball, material damping coefficient, dynamic friction coefficient. The kinematical parameters include impact velocity and diameter of shot ball. Multi-impact FE model consists of 3-D symmetry-cell. We can describe a certain repeated area of peened specimen under equibiaxial residual stress by the cell. With the cell model, we investigate the FE peening coverage, dependency on the impact sequence, effect of repeated cycle. The proposed FE model provides converged and unique solution of surface stress, maximum compressive residual stress and deformation depth at four impact positions. Further, in contrast to the rigid and elastic shots, plastically deformable shot produces residual stresses closer to experimental solutions by X-ray diffraction. Consequently, it is confirmed that the FE model with peening factors and plastic shot is valid for multi-shot peening analyses.

• Journal of the Korea Institute of Military Science and Technology
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• v.3 no.2
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• pp.179-188
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• 2000

Multi-disciplinary optimization design concept can provide a solution to many engineering problems. In the field of structural analysis, much development of size or topology optimization has been achieved in the application of research. This paper demonstrates an optimum design of a multi-layer cylindrical tube which behaves thermoelastically. A multi-layer cylindrical tube that has several different material properties at each layer is optimized within allowable stress and temperature range when mechanical and thermal loads are applied simultaneously. When thermal loads are applied to a multi-layer tube, stress phenomena become complicated due to each layer's thermal expansion and the layer thicknesses. Factors like temperature; stress; and material thermal thicknesses of each tube layer are very difficult undertaking. To analyze these problems using an efficient and precise method, the optimization theories are adopted to perform thermoelastic finite element analysis.

• Journal of the Korean Society for Precision Engineering
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• v.21 no.5
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• pp.114-121
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• 2004

Recently, the finite element absolute nodal coordinate formulation (ANCF) was developed for the large deformation analysis of flexible bodies in multi-body dynamics. This formulation is based on the finite element procedures and the general continuum mechanics theory to represent the elastic forces. In this paper, a computation method of dynamic stress in flexible multi-body dynamics using absolute nodal coordinate formulation is proposed. Numerical examples, based on an Euler-Bernoulli beam theory, are shown to verify the efficiency of the proposed method. This method can be applied for predicting the fatigue life of a mechanical system. Moreover, this study demonstrates that structural and multi-body dynamic models can be unified in one numerical system.