• 가정과삶의질연구
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• 제19권3호
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• pp.41-51
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• 2001

The purpose of this study was to investigate the relationships between mothers involvement of their childrens peer interaction, their memory of childhood peer relations, and their perception of childrens social competence. Subject consisted of 302 mothers of 4- to 6-year-old children. A sample of mothers completed a series of questionnaires assessing their peer experiences, perceptions about their childrens sociability, and a behavioral checklist of their involvement activities. The results indicated that mothers own sociability and their perceptions of their childrens sociability influenced their involvement. More intense maternal involvement occurred when mothers perceived their children to be sociable. Mothers with sociable peer recollections appeared to take more active role in their childrens social development.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 가을 학술발표회 논문집
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• pp.371-374
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• 2003

The degree of changes in mechanical properties of fire-damaged reinforced concrete column depends mostly on sectional geometry, duration exposed to fire, and moisture containment. In order to reasonably assess the deterioration of structural capacity of fire-damaged reinforced concrete column, it is necessary to develop a theoretical model predicting column behavior based on nonlinear heat transfer equation in addition to the traditional mechanics. This research focuses on the development of theoretical model to predict moment-curvature relations of fire-damaged reinforced column. The model is used for the assessment of structural capacity of fire-damaged column in terms of moment-curvature relations and PM interaction curves.

• 산업기술연구
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• 제18권
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• pp.277-287
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• 1998

In this work continuous thermodynamics was adopted for describing the influence of copolymer polydispersity on phase separations in random copolymer solutions. Continuous themodynamic frameworks were formulated using the Flory-Huggin's excess Gibbs free energy model in which the concentration- and temperature-depentent terms of interaction parameter x were modified. Cloud-point curves and coexistence curves of poly(ethylene-vinylactate)/methylacetate solutions and poly(ehtylene-vinylacetate)/ethylacetate solutions were measured, and experimental data were fitted with theoretical relations formulated in this work. Calculated could-point curves were more good ageeable with experimental data than the modified Flory-Huggins's relations. Coexistence curves which were evaluated by using parameters of x estimated from experimental cloud-point curves, were found to coincide with experimental data.

• Bulletin of the Korean Chemical Society
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• 제12권3호
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• pp.315-322
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• 1991

In a recent $paper^1$ we reported equilibrium (EMD) and non-equilibrium (NEMD) molecular dynamics simulations of liquid argon using the Green-Kubo relations and NEMD algorithms to calculate the thermal transport coefficients-the self-diffusion coefficient, shear viscosity, and thermal conductivity. The overall agreement with experimental data is quite good. In this paper the same technique is applied to calculate the thermal transport coefficients of liquid water at 298.15 K and 1 atm using TIP4P model for the interaction between water molecules. The EMD results show difficulty to apply the Green-Kubo relations since the time-correlation functions of liquid water are oscillating and not decaying rapidly enough except the velocity auto-correlation function. The NEMD results are found to be within approximately ${\pm}$30-40% error bars, which makes it possible to apply the NEMD technique to other molecular liquids.

• 천문학회보
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• 제44권2호
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• pp.63.2-63.2
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• 2019

Recent submillimeter observations of ALMA reveal that many protoplanetary disks contain substructures like gaps or rings. The disk-planet interaction is believed to be the most likely gap formation scenario, and most previous numerical work attempted to constrain the planet mass using the density profiles of gas in the gaps. Since the dust and gas distributions likely differ from each other in protoplanetary disks, however, perturbed rotational velocities that directly probe the gas would give a more reliable estimate to the planet mass. In this work, we run two-dimensional hydrodynamic simulations to measure the amplitudes and widths of rotational velocity perturbations induced by planets with different mass. We present the parametric relations of the gap widths and depths as functions of the planet mass and disk properties. We also apply our relations to HD 163296 to infer the masses of embedded planets.

• Human Ecology Research
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• 제56권2호
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• pp.133-144
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• 2018

The study examined the longitudinal relations of preschool children's peer interaction, linguistic and cognitive abilities, and self-control, while taking into account gender differences. The study was conducted with 671 preschoolers from the $5^{th}$, $6^{th}$, and $7^{th}$ wave of the Korean Children and Youth Panel Study (KCYPS). Data were analyzed by means of basic descriptive statistics, Pearson's correlations, and structural equation modeling analysis. Bootstrapping method was also used to determine the significance of indirect effects. The analysis were conducted to find the longitudinal effects of peer interaction at the age of 4 on their self-control at the age of 6, and the mediating effects of linguistics and cognitive abilities at the age of 5 on its associations. The results indicated gender differences among the variables. According to multi-group analysis, there was a significant influence of 4 years' peer interaction on subsequent 5 years' linguistic and cognitive abilities but also on 6 years' self-control across time for boys; however, no significant direct effect of peer interaction on self-control was found for girls. Based on the findings of this study, it can be implied that it is necessary to apply different methods for boys and girls to promote self-control from the influence of peer interaction and linguistic and cognitive abilities.

• 아동학회지
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• 제29권1호
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• pp.243-255
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• 2008

This study analyzed relations among maternal parenting behavior, infant development and parenting stress focusing on the moderating effect of parenting stress. Subjects were 30 infants and their mothers. After videotaping the mother-infant free play session, maternal parenting was analyzed by the Parent Child Interaction Play Assessment(Mash & Terdal, 1981); mothers' parenting stress was measured by questionnaire. Infant development was measured individually by the Korean Bayley Scale of Infant Development (K-BSID-II). Correlation analyses revealed that infant cognitive development correlated significantly with maternal parenting behavior (attention) but the relation between them was moderated by maternal parenting stress; only the low parenting stress group showed a positive relationship between maternal parenting behavior and infant development.

• 한국실내디자인학회논문집
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• 제21권4호
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• pp.121-128
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• 2012

Interactive space became one of the modern contemporary society design paradigms. For elevating the interactive effect, we need Interactive design development which uses the influential factors on the interactivity. Digital technology is resulted in a change to a society as well as to the life of human and its way of communication. This study is inquiry into the relations and the common characteristics between ecological architecture space and eco-centric environmental philosophy by making a comparative research. This aims to examine type of spatial contexts for performed through literature research for theory by interactive space and case studies for ecological construction elements to design. And the range of case study is limited to interaction space in addition of interactive elements and user interface. And analysis conclusion is show the many type. Five principles that draw at ecological design conceptualization process, whole unity, variety of organic at ecological design conceptualization process, circularity, homeostasis, allness, biological evolution, diversity have involved with concept that presents in ecological esthetics and organic property of ecology-system.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2004년도 봄 학술발표회 논문집
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• pp.397-408
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• 2004

The aim of this paper is to study the interaction between adjacent buildings with different foundation levels under earthquake loading conditions. Buildings and soil are represented by two different models. In the first case, the building itself is modeled with standard frame elements, whereas the soil behavior is simulated by a special grid model, In the second case, the building and soil are represented by plane stress or plane strain elements. The modulus of elasticity of the ground as well as the varying relations of inertia have a strong influence on the section forces within the buildings. The interaction between the two buildings is demonstrated and discussed via numerical examples using the proposed method.

• 한국조리학회지
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• 제11권4호
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• pp.59-76
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• 2005

The purpose of this study is to illuminate the influence happened by the process of acquirement of professional cooking skills related to satisfaction with duty of hotel cooks according to the development and expansion of the food service industry. First, interaction with colleagues, working environment, accomplishment of duty, satisfaction of duty etc. have a big effect on improvement of cooking skills, that is, acquirement and accumulation of cooking skill. Therefore, it's confirmed that improvement of skill can be promoted if we focus on this kind of factors and meet more positively. Second, field education training should be operated professionally with systematic education training. Third, duty rotation has an effect on skill advancement. It can be interpreted that oppressive feelings caused by ability, skill, knowledge, human relations etc. which is required in new business related to frequent change of the business in one's charge can have an effect on duty satisfaction. It's considered that comprehensive and in-depth study should be accomplished in future concerning duty rotation, field training.