• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2008년도 학술대회
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• pp.256-261
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• 2008

A CFD analysis of helicopter flowfield in forward flight is considered as non-trivial issue because of the complexity of vorticity-dominated flowfield. In this work, a study on the selection of the proper location for the installation of the Pitot probe is conducted using a CFD code which can deal with the interaction of rotor blade vortex and body. To describe the flow patterns for rotating rotor blades and body, the sliding mesh scheme is utilized. Pressure distributions and flow patterns are also analyzed to identify regions free from the interaction of body and wake induced from rotor blades.

• International Journal of Costume and Fashion
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• 제10권2호
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• pp.1-13
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• 2010

The purpose of this study is to investigate the behavioral complexities frequently arising in married couples with respect to clothing choices. Symbolic interaction theory was used to understand how spousal influence affects clothing selection after marriage. A convenient sample of nine married couples was interviewed for the data collection. A content analysis revealed how marriage affected their clothing choices, types of communication conveyed with their spouses about clothes and shopping patterns. The primary result indicated that individuals take their spouses' clothing preferences into consideration. Couples exhibited varying frequencies of communication about clothing choices and developed a variety of shopping patterns. As a result of the findings from this study, future research directions are suggested.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2008년 추계학술대회논문집
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• pp.256-261
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• 2008

A CFD analysis of helicopter flowfield in forward flight is considered as non-trivial issue because of the complexity of vorticity-dominated flowfield. In this work, a study on the selection of the proper location for the installation of the Pitot probe is conducted using a CFD code which can deal with the interaction of rotor blade vortex and body. To describe the flow patterns for rotating rotor blades and body, the sliding mesh scheme is utilized. Pressure distributions and flow patterns are also analyzed to identify regions free from the interaction of body and wake induced from rotor blades.

• 대한가정학회지
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• 제29권1호
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• pp.139-158
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• 1991

The purpose of this study is to investigate the relationship between adult children's perceived interaction pattern with their parents and their marital satisfaction. The subjects are a total of 646 male and female who been married for 3 years or less, living in Seoul, and whose fathers or mothers are still alive. The questionaire, including of attachment, autonomy, marital satisfaction scales, are distributed to collect the data. The main results are as follows: 1. Intimate-Dependent type is 31% each in relation to fathers and mothers. Distant-Independent type is 30% in relation to fathers, 27% in relation to mothers. Balanced type is 21% in relation to fathers, 23% in relation to mothers. Undeveloped type is 18% in relation to fathers, 19% in relation to mothers. 2. there is interaction effect between parental sex and adult children's sex as related to attachment levels, autonomy levels. 3. There is statistically significant difference among attachment-autonomy patterns as related to adult children's marital satisfaction. 4. Attachment and autonomy in relation to fathers and attachment in relation to mothers affect sons' marital satisfaction positively. Attachment in relation to fathers and mothers affect positively to daughters' marital satisfaction.

• 한국지역사회생활과학회지
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• 제15권1호
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• pp.57-65
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• 2004

The purposes of this study are to identify types of fathers who engaged in different patterns of interaction with their children and to examine the characteristics by different fathering patterns. Data are collected from 323 married men with the oldest child under 12 years old, using the structured questionnaire survey method. The major findings of the study are as follows: First, the fathering activities are composed of four factors, which are affective involvement, caretaking, social involvement and discipling. The respondents tend to exhibit the level of fathering activities higher than middle point. Second, using cluster analysis, three types of fathers are categorized: The affective type fathers scored significantly high on dimensions of affective involvement. Whereas the engaged fathers scored the highest on all domains of fathering, the disengaged fathers demonstrated significantly limited involvement. Third, the characteristics which are associated with fathering activities patterns are father's age, job type, work hour, frequency of meetings after work hour, job satisfaction and child rearing attitude. The results of this study suggest several implications to develop parent education program for fathers and their children.

• Smart Structures and Systems
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• 제13권5호
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• pp.869-890
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• 2014

In this study, a damage detection approach using train-induced vibration response of the bridge is proposed, utilizing only direct structural analysis by means of introducing soft computing methods. In this approach, the possible damage patterns of the bridge are assumed according to theoretical and empirical considerations at first. Then, the running train-induced dynamic response of the bridge under a certain damage pattern is calculated employing a developed train-bridge interaction analysis program. When the calculated result is most identical to the recorded response, this damage pattern will be the solution. However, owing to the huge number of possible damage patterns, it is extremely time-consuming to calculate the bridge responses of all the cases and thus difficult to identify the exact solution quickly. Therefore, the soft computing methods are introduced to quickly solve the problem in this approach. The basic concept and process of the proposed approach are presented in this paper, and its feasibility is numerically investigated using two different train models and a simple girder bridge model.

• 한국과학교육학회지
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• 제21권2호
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• pp.279-288
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• 2001

본 연구에서는 인지 갈등 유발 전략(CCS)과 사회적 합의 형성 전략(SCS) 하에서 진행된 소집단 토론의 상호작용 양상을 비교하였다. 과학 개념을 학습하는 4개 소집단 16명의 학생들을 대상으로 개별 진술, 상호작용 단위, 에피소드 수준에서 언어적 상호작용을 분석하였다. 토론 1회 당 전체 개별 진술이나 지식구성 진술은 CCS 집단에 비해 SCS 집단에서 많이 나타났다. 특히, 가설의 비교 평가나 토론 활동지는 SCS 집단 학생들의 메타인지적 진술을 증가시키는 데 효과적이었다. SCS 집단에서는 다수 참여형 및 정교화 상호작용이나 탐구형 에피소드의 빈도가 상대적으로 높아, 많은 학생들이 소집단 토론에 참여하였고 상호작용적인 정교화 토론이 진행된 것으로 나타났다. 상호작용이나 에피소드의 질적인 측면에서도 SCS 집단이 CCS 집단보다 우수하였다.

• 한국과학교육학회지
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• 제32권4호
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• pp.671-685
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• 2012

이 연구에서는 이해와 검토 단계를 강조한 비유 실험 설계 전략을 개발 적용하였다. 중학교 1학년 과학영재로 구성된 4개의 소집단을 대상으로 전략을 활용한 수업에서 나타나는 실험 설계 과정의 유형을 분류하고 과학영재들 사이의 언어적 상호작용을 개별 진술 및 상호작용 단위 수준에서 분석하였다. 연구 결과, 3개의 소집단이 확장이동형(RM), 1개의 소집단이 후진-확산이동형(BDM)에 해당하였다. 과학영재들 사이의 언어적 상호작용은 전체적으로 개별 진술 및 상호작용 단위 수준에서 과제관련 진술의 빈도가 높았으며 특히, 의견제시 진술과 대칭적 정교화 상호작용의 빈도가 가장 높았다. 전략의 단계별 분석 결과, 이해 단계에서는 설명하기와 질문하기, 누적형 상호작용이 많았으며, 설계 단계에서는 의견제시와 누적형, 논쟁형 상호작용이 많았고, 검토 단계에서는 의견제시와 의견받기, 논쟁형 상호작용이 많았다. 유형별 차이를 분석한 결과, 전략의 모든 단계에서 유형간 상호작용 단위 수준에 질적인 차이가 있었으며, 개별 진술의 경우 설계 및 검토 단계에서 차이가 있는 것으로 나타났다. 이에 대한 교육적 함의를 논의하였다.

• 한국산업융합학회 논문집
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• 제2권2호
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• pp.115-124
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• 1999

The interaction of weak normal shock wave with turbulent boundary layer in a supersonic nozzle was investigated experimentally by wall static pressure measurements and by schlieren optical observations. The lime-mean flow in the interaction region was classified into four patterns according to the ratio of the pressure $p_k$ at the first kink point in the pressure distribution of the interaction region to the pressure $p_1$ just upstream of the shock. It is shown for any flow pattern that the wall static pressure rise near the shock foot can be described by the "free interaction" which is defined by Chapman et al. The ratio of the triple point height $h_t$ of the bifurcated shock to the undisturbed boundary layer thickness ${\delta}_1$ upstream of the interaction increases with the upstream Mach number $M_1$, and for a fixed $M_1$, the normalized triple point height $h_t/{\delta}_1$ decreases with increasing ${\delta}_1/h$, where h is the duct half-height.

• 아동학회지
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• 제36권5호
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• pp.95-113
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• 2015

This study aimed to develop and validate a scale which could be used to evaluate mathematical interactions of parents with their young children. The subjects comprised 408 mothers of 4-6-year-old children. Means, standard deviation, $x^2$, Cramer's V, exploratory factor analysis, confirmatory factor analysis, Pearson correlations, and Cronbach's ${\alpha}$ were calculated. First, 49 items were developed through a review of relevant research, parent interviews, confirmation of item adequacy and content validity. These items were then edited down to a final list of 24 items representing 4 factors identified by exploratory factor analysis. Second, this 24-item. 4-factor scale was shown to have adequate construct validity, norm validity, and reliability by confirmatory factor analysis, Pearson correlation analysis, Cronbach's ${\alpha}$. In conclusion, the final mathematical interaction scale for young children's parents was composed of 24 items with 4 factors: "interaction regarding numbers and operations, measurements, and patterns", "interaction regarding data collection and result presentation", "interaction with picture books", and "interaction regarding shapes and figures"