• Journal of computational fluids engineering
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• v.5 no.2
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• pp.38-46
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• 2000

It has been indicated that the rotor/stator interaction has distinct causes of unsteadiness, such as the viscous vortex shedding, wake/stator interaction and potential rotor/stator interaction. In this paper, the mechanism of unsteady potential interaction in one stage axial compressor is numerically investigated for blade row ratio 1:1 and 2:3 at design point and for blade row ratio 2:3 at off-design point in two-dimensional view point. The numerical technique used is the upwind scheme of Van-Leer's Flux Vector Splitting(FVS) and Cubic spline interpolation is applied on zonal interface. In this study the flow unsteadiness due to potential interaction are found to be larger in blade row ratio 2:3 than in 1:1. The total pressure rise in blade row ratio 2:3 is closer to the real value in design point than that in 1:1. The change of unsteady pressure amplitude according to the variation of stator exit pressure is very small.

• YAKHAK HOEJI
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• v.49 no.5
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• pp.399-404
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• 2005

To investigate drug interaction, 23,536 prescriptions published for 1 year were investigated with 'Drug Inter­action Fact 2002'. Dispensing records and a database file written in a local general hospital in South Korea were used as a sample. The number of total cases of drug interaction was 3,238 ($13.76\%$) out of 23,536 prescriptions. The incidence of drug interaction in each prescription the children, the adults, and the elderly were $1.33\%,\;10.97\%,\;25.50\%$, respectively. The incidences of drug interaction per each prescription were $22.03\%,\;20.52\%,\;0.51\%,\;and\;0.36\%$ in neurosurgery, internal med­icine, pediatrics, and orthopedics, respectively. In neurosurgery and internal medicine, risk-high drugs of drug interaction such as antihypertensive drugs, diuretics, and cimetidine were used very often in elderly. In this paper, several suggestions to reduce drug interaction were postulated with regard to the usage of analgesics, non-steroidal antiinflammatory drugs, and antibiotics.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.281-289
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• 2006

본 연구의 목적은 어린이를 위한 인터랙티브 TV (KidTV)의 개발 사례를 통하여 사용자 인터페이스 디자인에 있어 제품디자인 영역의 특수성이 반영된 보다 적합한 인터랙티브 제품의 디자인 개발 체계를 개발하기 위한 관점을 찾는데 있다. 이를 위하여 본 연구에서는 인터랙션 디자인 프로젝트에서 제품디자인적 문제해결 과제인 물리적 형태부여의 주요 요소인 인터랙션 스타일을 보다 합리적으로 조형요소로써 반영하기 위한 해결안으로써 "Form follows function" 이라는 루이스 설리반의 주장에서 힌트를 얻어 현시적 관점에서 그의 주장을 재해석하여 "Form follows Interaction" 이라는 디자인 키워드를 통하여 사용자 인터페이스 디자인에서의 제품디자인 측면의 인터페이스 개발을 위한 하나의 관점으로 제안하고자 한다. 이를 통하여 다양한 학제가 결합하여 진행할 수 밖에 없는 사용자 인터페이스 디자인에 있어 여러 다른 학제들과 제품디자인 영역간의 이해를 돕고 사용자 인터페이스 전체적인 관점에서 제품디자인 영역의 디자인 개발체계를 확립할 수 있는 하나의 관점을 제공하고자 한다.

• Journal of the Korean Home Economics Association
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• v.44 no.2 s.216
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• pp.113-126
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• 2006

This study aimed to examine the relationship between sexual communication and marital quality. Study data were collected from structured questionnaires completed by 695 married men and women aged in their 30s and 40s. The major results were as follows. For the interaction coordination and postsexual interaction, there were significant differences between men and women, in that men had more interaction coordination and postsexual interaction than women. The results show the stereotype of sexuality in Korean society that men should be more active, and assertive while women should be passive and dependent. For both men and women, those who had more dyadic sexual communication, more interaction coordination, and more postsexual interaction had a higher level of marital quality. That is, sexual communication can function significantly in increasing marital quality. The study results suggest the necessity of training to improve sexual communication skills. For example, in educational programs for couple enrichment, it will be useful to include skills such as expressing ones' desire, affect, and feelings explicitly.

• Structural Engineering and Mechanics
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• v.46 no.5
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• pp.645-672
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• 2013

The differential settlements and rotations among footings cannot be avoided when the frame-footing-soil system is subjected to seismic/dynamic loading. Also, there may be a situation where column(s) of a building are located near adjoining property line causes eccentric loading on foundation system. The strap beams may be provided to control the rotation of the footings within permissible limits caused due to such eccentric loading. In the present work, the seismic interaction analysis of a three-bay three-storey, space frame-footing-strap beam-soil system is carried out to investigate the interaction behavior using finite element software (ANSYS). The RCC structure and their foundation are assumed to behave in linear manner while the supporting soil mass is treated as nonlinear elastic material. The seismic interaction analyses of space frame-isolated footing-soil and space frame-strap footing-soil systems are carried out to evaluate the forces in the columns. The results indicate that the bending moments of very high magnitude are induced at column bases resting on eccentric footing of frame-isolated footing-soil interaction system. However, use of strap beams controls these moments quite effectively. The soil-structure interaction effect causes significant redistribution of column forces compared to non-interaction analysis. The axial forces in the columns are distributed more uniformly when the interaction effects are considered in the analysis.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.28 no.12
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• pp.1573-1581
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• 2004

Thermodynamic principles are described with a new point of view. In present study, the interaction between two systems is focused instead of the behavior of a system in conventional thermodynamics. The state change of a system cannot occur by itself but it is the result of the interaction between systems. However, the interaction itself is also the result of another kind of interaction, the interaction between two interactions. To reconstruct thermodynamics with such a point of view, the reversible world is imagined, in which conservations and measurements are discussed. There exists a conserved quantity for each mode of reversible interaction. The conserved transferring quantity in the interaction between interactions is the effective work, which is supposed to be measurable and conserved in reversible world. Effective work is the primary concepts of energy. It is the key factor to explain measurements, energy conservation and energy dissipation. The concepts developed in reversible world are applied to the real world in which irreversible phenomena may occur. Irreversibility is the result of effective energy dissipation, in which effective work irreversibly changes into entropy. A quantitative relation between the disappearing effective work and the generated entropy is dissipation equation which is given by experiments. A special temperature scale to give a very simple type of the dissipation equation is the absolute temperature scale, which gives the conventional conservation of energy.

• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.253-257
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• 2007

Channel-aquifer interaction is one of the key hydrological processes that determine water flows in the stream/river channel. Field measurements of channel-aquifer interaction, however, is very difficult and costly, particularly when one intends to understand its variations across a catchment for a long period. Hydrological simulations using a catchment model are a relatively easier and cheaper alternative provided the model structure is appropriate for describing channel-aquifer interaction. In this study, a catchment model called CAMEL (Chemicals from Agricultural Management and Erosion Losses) is used for estimating channel-aquifer interaction over time and space. CAMEL is a distributed catchment model to simulate transformation and transport processes of sediment and pollutants as well as water flows at the catchment scale. In the model, a catchment is represented using a network of square columns each of which is comprised of various storages of water. CAMEL explicitly simulates both surface and subsurface processes including channel-aquifer interaction. This paper presents an application study results of CAMEL for the Tarland Burn Catchment, a small (catchment area $52\;km^2$) rural catchment in Scotland, UK, demonstrating some of the channel-aquifer interaction dynamics across the catchment during a 2-year period.

• Journal of Engineering Education Research
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• v.13 no.6
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• pp.164-170
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• 2010

This article explores the effects of the RBI(Robot Based Instruction) for promotion of students' interaction in elementary school. It was found that Cognitive Affective Metacognitive interaction is evenly spread in RBI. It was particularly high the ratio of metacognitive interaction. According to the analysis result of learner's activity by the detailing, it was observed that robot media promoted students' interaction. Also, metacognitive interaction about clarification and elaboration was promoted lively in the RBI situation. Therefore, RBI was helpful to promote of students' interaction in elementary school.

• Korean Journal of Human Ecology
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• v.21 no.4
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• pp.715-728
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• 2012

This research aims at examining the relationships between mother-toddler interaction and its related variables. A total of 49 toddlers and their mothers were participated and observed in the child lab during free play. The main results of this study are as follows. First, among the mother-toddler interaction, 'involvement' was frequently used in comparison with the 'rejection' was the hardly used in their interaction. Second, the mothers' sensitivity, parenting stress, and the mother-toddler interaction had no significant difference by the mothers' job status or gender of toddlers. However, their parenting stress was lower in working mothers or mothers who have girls. Third, mother-toddler interaction was significantly correlated with the mothers' sensitivity, parenting stress, parenting style, and the temperament of toddlers. On the basis of this results, the implication related to the variables influencing mother-toddler interaction was discussed.

• Korean Journal of Child Studies
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• v.10 no.1
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• pp.26-42
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• 1989

This study was designed to investigate the relation between mother's interaction strategies and self-regulation of young children from a Vygotskian perspective. The hypotheses of this study were: 1) The self-regulation of young children will improve with increase in age, 2) the use of mothers' interaction strategies will increase as child's age decreases, 3) mothers' directiveness in the mother-child interaction depends on the age of child and socio-economic level, and 4) mothers' directiveness in the mother-child interaction will have negative relationship with child's self-regulation. The subjects of this study were 60 mother-child dyads with three different age-of-child groups (3-, 4-, and 5-year-olds). They were further divided into higher and lower socio-economic groups. A puzzle task was used for the measurement of self-regulation. The task consisted of two identical puzzles with one used as the model. The collected data were analyzed by ${\chi}^2$, one-way and two-way analysis of variance, and Pearson's r. Self-regulation of the young children improved with increase in age (P < .05). The use of mothers' interaction strategy decreased as the children's age increased (P < .05). Mothers' directiveness in the mother-child interaction was influenced by the age of child (P < .01) and by socioeconomic level (P < .05). There was a negative correlation (r=-.848) between the mothers' directiveness in the mother-child interaction and the child's self-regulation (P < .001).