• 한국보육지원학회지
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• 제15권2호
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• pp.59-76
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• 2019

Objective: The purpose of this study was to analyze the structural relationship and influence of parents' family interaction, parenting efficacy, and child internalizing and externalizing problem behaviors. Methods: 1,418 children and their parents, and survey data from a panel study on Korean children (2014), were used to analyze the structural equation model. Results: First, the mother's family interaction had direct influence on their parenting efficacy, as well as their child's internalization and externalization. Second, the father's family interaction had a direct influence only on the internal problem behaviors of the child, and child external problem behaviors were influenced through the father's parenting efficacy. Third, parenting efficacy mediated the effects of family interaction on the problem behavior of children. Especially, the father's family interaction was found to affect child variables through the mother's parenting efficacy. Finally, the internalizing problem behaviors of the child mediated the effects of the parents' family interaction and parenting efficacy on child externalizing problem behaviors. Conclusion/Implications: The results of this study are significant in that the factors of father, mother, and child are interrelated, and that parent interaction has varying influence on the problems of their children.

• Journal of Ship and Ocean Technology
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• 제7권3호
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• pp.1-12
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• 2003

The influence of nonlinear phenomena on the behavior of stationary forced flexural-gravity waves on the surface of deep water is investigated, when the perturbation of external pressure moves with near-resonant velocity. It is shown that there are three branches of bounded stationary solutions turning into asymptotic solutions of the linear problem with zero initial conditions. For the first time ice sheet destruction by turbulent fluctuations of atmosphere pressure in ice adjacent layer in wind conditions is studied.

• 대한가정학회지
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• 제49권5호
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• pp.117-127
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• 2011

The purpose of this study was to investigate the effects of mother's neuroticism and parenting stress, and young children's stress on internal and external problem behaviors. The participants of this study consisted of 236 mothers, who had children aged 5-7 in Chungbuk area. Mothers responded to questionnaires and data analyzed using SPSS program(version 12.0) and AMOS program(version 5.0). The results of this study were as follows.: First, a mother's neuroticism, parenting stress, and young children's stress directly influenced on young children's internalizing problem behaviors. The effect of mother's neuroticism on young children's internalizing problem behaviors was mediated by mother's parenting stress and young children's stress. Second, mother's parenting stress influenced young children's externalizing problem behaviors directly, but mother's neuroticism and young children's stress did not. The effect of mother's neuroticism on young children's externalizing problem behaviors was mediated by parenting stress.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 1997년도 춘계 학술발표회 논문집 Proceedings of EESK Conference-Fall 1997
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• pp.128-135
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• 1997

The indirect boundary integral equation is formulated to analyze the behavior of a cavity in a multilayered half-plane subjected to earthquake waves. This formulation uses the fundamental solutions that are numerically calculated by the generalized transmission and reflection coefficient method. The free surface of the cavity without external excitation influences the behavior of the half-plane. Consequently this analysis adds the consideration of scattering-field into the analysis and the total motion field of the cavity is decomposed into the free-field and scattering-field motions. The free-field motion is obtained from the modification of the transmission and reflection coefficient method. The scattering-field motion is calculated is calculated by the indirect boundary value problem which has the ficticious boundaries and sources. In this study, P wave, SV wave, SH wave, and Rayleigh wave are analyzed respectively.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2000년도 가을 학술발표회논문집
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• pp.151-158
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• 2000

Cable dome that consists of three component such as cable, strut and fabric membrane has complex structural characteristics. Main structural system of cable dome is cable-strut tensegric system and fabric membrane element is conceived as cladding roof material. One of the important problem of cable dome is to investigate the structural response from external load effect such as snow and wind. When cable dome is subjected to load each structural component has various special structural characteristics. One is that geometrical nonlinearity should be considered because large deformation is occurred from their flexible characteristic. The other is that wrinkling occurs occasionally because cable and membrane elements can not transmit compressive forces. So this paper researches the physical structural response of cable dome structure and the structural behavior when failure occurred at a part of structure.

• 제어로봇시스템학회논문지
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• 제6권12호
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• pp.1086-1092
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• 2000

To realize a visual servo control of slender manipulators, two problems to be solved are analysed. The stability problem on so-called noncolocation control and the infinite order problem of the real Jacobian matrix caused by the elastic deformation are discussed. By considering the dynamic relations between rigid and elastic modes, a Jacobian operator is derived and the physical meaning is also explained. Then, for practical control, a simple control scheme using an approximate Jacobian is proposed and its stable conditions are proven by means of the $L_$2$ stability theory. The scheme is structurally similar to the conventional PD control laws, but external sensors(e. g. visual sensor) are used for positioning and internal sensors for damping. A good performance is obtained via control experiments of a slender two link manipulator.

• International Journal of Contents
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• 제10권3호
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• pp.41-46
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• 2014

A cause-effect graph considers only the desired external behavior of a system by identifying input-output parameter relationships in the specification. When testing a software system with cause-effect graphs, it is important to derive a moderate number of tests while avoiding loss in fault detection ability. Pairwise testing is known to be effective in determining errors while considering only a small portion of the input space. In this paper, we present a new testing technique that generates pairwise tests from a cause-effect graph. We use a Boolean Satisbiability (SAT) solver to generate pairwise tests from a cause-effect graph. The Alloy language is used for encoding the cause-effect graphs and its SAT solver is applied to generate the pairwise tests. Using a SAT solver allows us to effectively manage constraints over the input parameters and facilitates the generation of pairwise tests, even in the situations where other techniques fail to satisfy full pairwise coverage.

• 제어로봇시스템학회논문지
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• 제15권10호
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• pp.967-973
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• 2009

The model matching problem of asynchronous sequential machines is to design a corrective controller such that the stable-state behavior of the closed-loop system matches that of a prescribed model. In this paper, we address model matching when the external input set consists of controllable inputs and uncontrollable ones. Like in the frame of supervisory control of Discrete-Event Systems (DES), uncontrollable inputs cannot be disabled and must be transmitted to the plant without any change. We postulate necessary and sufficient conditions for the existence of a corrective controller that solves model matching despite the influence of uncontrollable events. Whenever a controller exists, the algorithm for its design is outlined. To illustrate the physical meaning of the proposed problem, the closed-loop system of an asynchronous machine with the proposed control scheme is implemented in VHDL code.

• 한국학교보건학회지
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• 제23권2호
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• pp.256-265
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• 2010

Purpose: The purpose of this study was to identify the psychological problems of the children in early stage and provide basic data for develop the children's mental health promotion programs. Methods: There were 270 subjects who were fist and forth grade of elementary school and the data was collected through their parents. This study use Child Problem-Behavior Screening Questionnaire that was divided into five sub-scales, including internal problems, external problems, cognitive problems, abuse problems and psychosomatic problems. Each sub-scales have one cutting points, children whose scores above the cutting points means abnormal in correspond subscale. Results: 1) The most appearing problems was psychosomatic problems with 10.8% of subjects and next internal problems with 8.6% of subjects in elementary school student. 2) For distribution of mental behavior development according to gender, there was significant difference in psychosomatic problems between male and female (p =.009). 3) For distribution of mental behavior development according to grade, the results showed that significant difference in internal problems (p =.000) and total scores of CPSQ (p =.012) between first grade and forth grade. Conclusion: When we develop children's mental health promotion program, it is necessary to considerate the gender and grade characteristics.

• 사회복지연구
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• 제48권1호
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• pp.173-206
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• 2017

본 연구는 아동학대와 심리사회적 부적응의 관련성에 주목하여 메타분석을 통해 심리사회적 부적응에 대한 아동학대 각 유형의 영향력을 정리하고자 하였다. 아동학대는 신체 정서 성학대와 방임을 구분하여 분석하였으나 연구물 부족으로 성학대를 제외하였고, 심리사회적 부적응은 내재화 문제행동과 외현화 문제행동으로 범주화하여 분석하였다. 분석대상연구물로는 1990년부터 2016년까지 보고된 총 104편의 논문과 학위논문을 선정하였으며 연구결과는 다음과 같다. 첫째, 내재화 문제행동 전체에 대한 정서 학대, 학대, 신체 학대, 방임의 효과크기는 중간효과크기로 통계적으로 유의한 결과를 보였다. 외현화 문제행동 전체에 대해서도 정서학대, 신체학대, 방임, 학대는 중간크기 효과크기를 보였으며 통계적으로 유의하였다. 둘째, 아동학대 유형별로 살펴보면 정서학대는 내재화 문제행동의 불안, 우울, 불안/우울에서 다른 학대유형보다 상대적으로 큰 영향을 미쳤고, 외현화 문제행동에서는 공격성에서만 영향력이 컸다. 방임은 내재화 문제행동보다 외현화 문제행동에 상대적으로 크게 영향을 미치는 것으로 나타났다. 셋째, 아동학대와 내재화 문제행동의 관계에서 출판물 유형만이 조절효과를 보였으며, 아동학대와 외현화 문제행동의 관계에서는 출판년도, 표본의 수, 출판유형이 조절효과를 나타내었다. 이러한 결과를 토대로 아동학대와 심리사회적 부적응의 관련성을 보고한 기존연구들을 종합하여 시사점을 제시하고 아동학대를 주제로 한 향후 연구방향을 제언하였다.