• Journal of Korean Academy of Nursing
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• v.13 no.1
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• pp.34-41
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• 1983

This study was concerned with the investigation of the relationship between the degree of family incongruence about family environment and the occurrence of juvenile delinquency using Family Environmental Scale (F.E.S) designed by Rudolf Moos. The study employed the control group design using the interview and questionnaire through home visiting. The control group sample consisted of 44 families from a middle socioeconomic S Dong community setting and the experimental group sample consisted of 30 families of juve nile from Juvenile Training School in Seoul, Total sample size was 321. Data for this study was collected over a period of three months from the end of Nov. 1982 to the beginning of Feb. 1983, after pretest. To analize the data, t-test was used. The result of this study was as follows; 1. The experimental groups' incongruence score was 18.8598 as compared to the control groups' score of 14.8598. The differences were statistically significant at .001 level, and the hygothesis was supported. 2. The experimental group had higher incongruence scores as compared to the control group of three dimensions, the differences were statistically significant at .05 level. The experimental group had higher incongruence scores than the control group on 6 subscales, namely, cohesion, expressiveness, conflict, achievement orientation, moral-religious emphasis and organization. The differences were statistically significant at. 05 level.

• Steel and Composite Structures
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• v.21 no.1
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• pp.57-72
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• 2016

The Poisson ratio reduction of symmetric hygrothermal aged $[{\theta}_m/90_n]_s$ composite laminates containing a transverse cracking in mid-layer is predicted by using a modified shear-lag model. Good agreement is obtained by comparing the prediction models and experimental data published by Joffe et al. (2001). The material properties of the composite are affected by the variation of temperature and transient moisture concentration distribution in desorption case, and are based on a micro-mechanical model of laminates. The transient and non-uniform moisture concentration distribution give rise to the transient Poisson ratio reduction. The obtained results represent well the dependence of the Poisson ratio degradation on the cracks density, fibre orientation angle of the outer layers and transient environmental conditions. Through the presented study, we hope to contribute to the understanding of the hygrothermal behaviour of cracked composite laminate.

• Journal of the Korean Home Economics Association
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• v.43 no.9 s.211
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• pp.1-13
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• 2005

The purposes of this study were to classify internet shopping mall user by their shopping styles and to define the characteristics of the classified individual clusters. Questionnaires were completed by 338 men and women who have used internet shopping malls at lead once during the previous 6 months. The internet shopping styles were classified into 4 clusters after factor analysis and k-means cluster analysis. Cluster I, named 'high brand proneness', can be described as having low score on devotee tendency. Cluster II, named 'high value proneness', is characterized by a high score on seeking substance. Cluster III, called 'steadiness orientation', can be described as having a tow score on seeking trend and substance. Cluster IV, named 'individuality inclination', can be described as having low score on seeking trend. These four clusters differ in terms of socio-demographic and environmental characteristics such as gender, age, educational level, occupation, and internet using time. Theoretical and practical implications are discussed.

• Journal of the Korean housing association
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• v.13 no.2
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• pp.73-78
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• 2002

Recently, the energy consumption has been sharply increased and the environmental pollution has been serious, resulted in increased use of fossil fuel. These facts are applied to most fields, and are especially important issues in the field of architecture. The energy consumption rate of building is about 30% of all energy consumption, and the rate of residential is about 20% of the rate of building and is increasing gradually. The purpose of this article is firstly to analyse an actual energy consumption rate of model building and compare it with alternative methods, which are applied passive system to, and secondly to suggest an optimal passive method for saving energy. The conclusion of this study is as follows; 1) As compared with the existing house on actual energy consumption rate, 6% in changing orientation to a south, 9% in using double low-e glazing and 23% in shading is decreased. 2) The change of insulation from 50 to 100mm did not show dramatical difference in energy consumption rate. 3) As changed indoor temperature at 2$0^{\circ}C$ in winter and 27$^{\circ}C$ in summer, the rate shows a reduction of 14% compared with the existing condition.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.4 no.1
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• pp.125-136
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• 1984

In the weled structures, fatigue fracture mainly depends upon crack growth behavior. Specially anisotropy of crack growth orientation and welding direction become important factor of fracture in the welding jone. When fatigue stressed steel welded with nonfatigue stressed steel, at the low stress intensity factor range, residual stress become more important factor of growth behavior then properties of base metal but when the crack growth in the weld metal, toughness of weld metal become the most important factor. Especially nonhomgeniety of toughness for the weld metal make more scatter the relations of $da/dN-{\Delta}K$.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.13 no.1
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• pp.65-74
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• 1993

The buckling load of a blade stiffened laminated composite plate having midplane symmetry is maximized for a given total weight. The thicknesses of the layers and the width and height of the stiffener are taken as the design variables. Buckling analysis is carried out using a finite element method. The optimization problem is solved using an IMSL subroutine. Due to the highly nonlinear nature of the optimality equations, several local optimum solutions are found. Various combinations of fiber orientation for the laminate layers and the blade stiffener are investigated to examine their relative efficiency. Out of several cases examined, the best design was produced from the combination of ($0^{\circ}Beam/0^{\circ}/90^{\circ}$)s.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.31 no.5
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• pp.57-72
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• 1999

Traditional theories of the tensile failure of paper have assumed that uniform strain progresses throughout the sheet until an imperfection within the structure causes a catastrophic break. The resistance to tensile elongation is assumed to be elastic , at first, throughout the structure, followed by an overall plastic yield. However, linear image strain analysis (LISA) has demonstrated that the yield in tensile loading of paper is quite non-uniform throughout the structure, Traditional theories have failed to define the flaws that trigger catastrophic failure. It was assumed that a shive or perhaps a low basis weight area filled that role. Studies of the fracture mechanics of paper have typically utilized a well-defined flaw around which yield and failure could be examined . The flaw was a simple razor cut normal to the direction of tensile loading. Such testing is labeled mode I analysis. The included fla in the paper was always normal to the tensile loading direction, never at another orientation . However, shives or low basis weight zones are likely to be at random angular orientations in the sheet. The effects of angular flaws within the tensile test were examined. The strain energy density theory and experimental work demonstrate the change in crack propagation from mode I to mode IIas the initial flaw angle of crack propagation as a function of the initial flaw angle is predicted and experimentally demonstrated.

• Journal of The Korea Institute of Healthcare Architecture
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• v.20 no.4
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• pp.27-38
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• 2014

Purpose : The main objective of this paper is, to assess a body of research evidence that articulates the impact of environment-related factors on wayfinding for people with dementia who reside in Long-term care Facilities. The study also aims at identifying design implications that can be incorporated into design process and design decisions to improve wayfinding abilities for people with dementia. Methods : Comprehensive literature review has been conducted to identify empirical studies and carefully investigated peer-reviewed articles published in many different fields including architecture, psychology, nursing to gerontology. Results : The review found a growing body of studies that identified environment-related factors that improve wayfinding of people with Dementia living in long-term care facilities. Implications : The findings of the review can be considered as design guidelines to support the wayfinding abilities of people with dementia living in long-term care Facilities.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.29 no.2
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• pp.157-164
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• 2011

As high-resolution satellite images have enabled large scale topographic mapping and monitoring on global scale with short revisit time, agile sensor orientation, and large swath width, many countries make effort to secure the satellite image information. In Korea, KOMPSAT-2 (KOrea Multi-Purpose SATellite-2) was launched in July 28 2006 with high specification. These satellites have stereo image acquisition capability for 3D mapping and monitoring. To efficiently handle stereo images such as stereo display and monitoring, the accurate epipolar image generation process is prerequisite. However, the process was highly limited due to complexity in epipolar geometry of pushbroom sensor. Recently, the piecewise approach to generate epipolar images using RPC was developed and tested for in-track IKONOS stereo images. In this paper, the piecewise approach was tested for KOMPSAT-2 across-track stereo images to see how accurately KOMPSAT-2 epipolar images can be generated for 3D geospatial applications. In the experiment, two across-track stereo sets from three KOMPSAT-2 images of different dates were tested using RPC as the sensor model. The test results showed that one-pixel level of y-parallax was achieved for manually measured tie points.

• The Journal of the Korea Contents Association
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• v.11 no.12
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• pp.785-799
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• 2011

This study apprehends the effect of primary causes that form civic consciousness, which mature local residents should have. Moreover, it tries to contribute to the development of mature civic consciousness with regard to the situations and conditions of local community, by observing how the extent of local problem recognition, personal viewpoints, and participation in social activities affect formation of civic consciousness. The research was conducted to 600 local residents, ages 20 and above, with proportional stratified sampling method. The study showed that high recognition of environmental, social, economic and aging issues, fulfillment on social achievement, self-perception, culture orientation, and higher frequency on participating on social activities have positive effects on formation of sound civic consciousness.