• 대한가정학회지
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• 제33권4호
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• pp.11-23
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• 1995

The purpose of this study is to investigate some influencing factors related to the urban housewives' homemanagement and management behavior on the problems of the environment. Questionaire Survey method was used and the sample was taken from 490 housewives who lives in Seoul and has husband and more than one child. The Research for this study was operated by frequency, mean, percentage, Factor Analysis, t-test, ANOVA, Duncan's multiple range test, and multiple regression analysis through the SAS program package. Based on the findings of this study, housewives' value, degree of exposure to mass communications, housewives' level of education were most influencial variables on Housewives' home management behavior pattern. And Housewives' home management behavior pattern, degree of exposure to mass communications, housewives' age, knowledge of the problems of the environment were most influencial variables on Housewives' management behavior onthe problesm of the environment.

• 한국병원경영학회지
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• 제19권2호
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• pp.89-98
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• 2014

The research was to investigate the effect of trust in supervisor, organizational trust and perception on the shared value on innovative behavior. The data were collected from 334 nurses from University hospital of G city. Data were analyzed with frequency, t-test, ANOVA, Scheffe-test, Pearson's correlation coefficient and hierarchical regression, equipped with SPSS 21.0. The results showed that there was correlation among trust in supervisor, organizational trust and perception, and innovative behavior. Therefore, it is considered that the study is the basis to improve innovative behavior of nurses by providing alternatives for achieving trust in supervisor, organizational trust and perception, for sake of efficient management of human resource of nurse of University hospital. This study was supported by research funds from Chosun Nursing College 2013.

• 대한가정학회지
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• 제44권1호
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• pp.37-45
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• 2006

The study aimed to determine the effects of Early Childhood STEP on parenting stress and child's behavior. The study subjects were 29 Korean mothers and their child. The researcher translated the Parent's guide of the Early Childhood STEP into Korean, along with the video tapes for parents. The experimental group was educated with the Early Childhood STEP program (lecture, reading educational material, discussion, watching video). To determine the pre- and post-test differences of parenting stress and infant behavior, t-test was used. The results are presented below. First, Early Childhood STEP exhibited a decreasing effect on the parenting stress of mothers. Second, STEP exhibited a decreasing effect on the infant behavior, particularly the behaviors in the areas of incapability, revenge, and power reactions.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 1992년도 가을학술발표회 논문집
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• pp.121-130
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• 1992

Assessement of comsolidation characteristics of soft soil is very important in the project of soft soil improvement. In the design step, the consolidation characteristics of soil is determined by the laboratory tests (typically oedometer test), generally. But there is big differences between the condition of laboratory test and the condition of field(in situ). the differences results in the considerable difference between the predicted and measured consolidation behavior. This article analyzed the consolidation data of the "SOFT SOIL IMPROVEMENT PROJECT of the 2nd Namdong Industrial Complex at Inchon". The project was improving the road way net work in the 2nd Namdong Industrial Complex by preloading and sand pile method. Field instrumentation was performed at 10 points which consist of pneumatic piezometers, magnetic probe extensometers, inclinometers and electronic dipmeter. The results showed that there is big difference in the laboratory predicted consolidation behavior and field consolidadion behavior. Also there was big difference in the settlement behavior and pore pressure behavior. This article investigated the above factors by comparing the settlement, pore pressure and strength at different conditions.onditions.

• 복식문화연구
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• 제14권3호
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• pp.366-380
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• 2006

The purpose of this study was to examine the effect of shopping orientations on clothing purchasing behavior according to residence. The data was obtained from questionnaires filled out by 530 females living in Seoul and Jecheon. For data analysis, factor analysis, ANOVA, t-test, Cronbach's $\alpha$, Duncan's multiple range test and cluster analysis were used. For shopping orientation, five factors of orientation were found and labeled as hedonism, brand and store loyalty, conformity, economy and rationality factor. Based on five shopping orientation factors, women were classified into five clusters(self-centered and rational, recreational, economy and shopping low involvement, economical and conformative cluster). Each cluster showed significantly different clothing purchasing behaviors (problem recognition, information search and evaluative criteria) and had different demographic variables(age, income, marital status and school career). Finally, residence and shopping orientations have influenced various clothing purchasing behavior. In conclusion, residence was the important factor which influenced on shopping orientation and clothing purchasing behavior.

• 아동학회지
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• 제23권3호
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• pp.109-121
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• 2002

The subjects of this validation of the Antisocial Behavior Scale(ABS) consisted of 323 normal and 29 clinically referred preschoolers between the ages of four and six years. The ABS has 3 factors: oppositional/aggression, nonsocial/egoism, and inattention. Results showed high test-retest reliability(r=.83-.90). The scale discriminated between the normal and clinical groups. The first(oppositional/aggression) and the third(inattention) factors of the ABS, measuring externalizing behaviors, correlated highly with the Externalizing Problems and Attention Problems Scales of the Korean Version of Child Behavior Checklist(K-CBCL). The second(nonsocial/egoism) factor of the ABS, measuring emotional areas correlated highly with the Emotional Liability Scale of the K-CBCL.

• 한국도로학회논문집
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• 제16권2호
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• pp.91-98
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• 2014

PURPOSES : The objective of this study is to investigate the effect of asphalt and geotextile interlayer on the fracture behavior of unbonded concrete overlay through a laboratory composite beam test. METHODS : In order to evaluate the effect of interlayer materials on the fracture behavior of unbonded concrete overlay, a laboratory test of composite beam was conducted with different types of interlayer. The test results of the composite beam using two types of geotextile interlayer with different thicknesses were compared to the test results of the composite beam using the tradition type of asphalt interlayer. The unbonded concrete overlay on the existing concrete pavement without interlayer was set for the control condition. RESULTS AND CONCLUSION : Overall, the laboratory composite beam test results did show the effect of asphalt and geotextile interlayer on the fracture behavior of composite concrete beams. The three-layer geotextile interlayer and HMA layer both increase the peak load when the first macrocrack occurs in the top concrete beam, while the HMA interlayer causes the smallest load drop percentage after the first macrocrack. The three-layer geotextile did show better performance than the single-layer geotextile through the greater peak load and smaller load drop percentage. It indicates that the thickness of geotextile interlayer will affect the fracture behavior of unbonded concrete overlay and the thicker geotextile interlayer is recommended.

• 콘크리트학회논문집
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• 제15권1호
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• pp.60-68
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• 2003

한국원자력연구소(KAERI)의 프로그램 일환으로 콘크리트 격납건물 벽체 부재의 half-thickness 모델을 대상으로 인장실험을 수행하였다. KAERI의 이번 실험연구 목적은 격납건물 내부에서 예기치 못한 사고로 인하여 극한 내압이 작용할 때 콘크리트 격납건물의 성능을 평가할 수 있는 실험적으로 규명된 해석방안을 마련하는데 있다. 여기에 수록된 실험으로부터 얻은 데이터는 콘크리트의 균열거동 및 철근/콘크리트 사이의 상호작용 등을 포함한 재료모델을 요하는 해석방법을 검증하는데 유용할 것이다. 주요 실험 변수는 콘크리트의 압축강도로써 2축 인장을 받는 프리스트레스트 콘크리트 패널 부재의 균열거동에 미치는 영향을 살펴보았다.

• 한국지반신소재학회논문집
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• 제10권2호
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• pp.1-12
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• 2011

조립재료의 입자 결합 및 파쇄 형태가 전단거동 특히 잔류 전단거동 특성에 미치는 영향을 분석하기 위하여, 개별요소법(DEM, discrete element method)에 기초를 둔 프로그램인 PFC(Particle Flow Code)를 이용하여 링 전단시험을 수치해석적으로 모델링하였다. 본 연구에서는 PFC내의 clump 모델 및 cluster 모델을 이용하여 두 개의 비파쇄모델 그리고 두 개의 파쇄모델을 포함한 총 네 개의 모델을 제시하였다. Lobo-Guerrero and Vallejo(2005)가 제안한 Lobo-crushing 모델의 적합성을 검토하였다. 또한 링 전단시험 모델링의 결과 분석을 통하여 직접전단시험 모델링 결과와 비교하였다. 연구 결과, 잔류 전단거동 분석을 위해서는 링 전단시험의 모델링이 필수적임을 알 수 있었다. 또한 잔류 전단강도 분석을 위해서는 Lobo-crushing 모델이 부적합함을 알 수 있었다. 따라서 본 연구에서 제시한 수치해석 모델은 향후 입자 파쇄를 포함한 조립재료의 잔류 전단강도 특성 연구에 다양하게 적용될 수 있다고 판단된다.

• Structural Engineering and Mechanics
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• 제84권5호
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• pp.619-632
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• 2022

Reinforced concrete (RC) structures may be subjected to sudden dynamic impact loads such as explosions occurring for different reasons, the collision of masses driven by rockfall, flood, landslide, and avalanche effect structural members, the crash of vehicles to the highway and seaway structures. Many analytical, numerical, and experimental studies focused on the behavior of RC structural elements such as columns, beams, and slabs under sudden dynamic impact loads. However, there is no comprehensive study on the behavior of the RC column-beam connections under the effect of sudden dynamic impact loads. For this purpose, an experimental study was performed to investigate the behavior of RC column-beam connections under the effect of low-velocity impact loads. Sixteen RC beam-column connections with a scale of 1/3 were manufactured and tested under impact load using the drop-weight test setup. The concrete compressive strength, shear reinforcement spacing in the beam, and input impact energy applied to test specimens were taken as experimental variables. The time histories of impact load acting on test specimens, accelerations, and displacements measured from the test specimens were recorded in experiments. Besides, shear and bending crack widths were measured. The effect of experimental variables on the impact behavior of RC beam-column connections has been determined and interpreted in detail. Besides, a finite element model has been established for verification and comparison of the experimental results by using ABAQUS software. It has been demonstrated that concrete strength, shear reinforcement ratio, and impact energy significantly affect the impact behavior of RC column-beam connections.