• Title/Summary/Keyword: Dimension of Interaction

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Symbolic Play Theories of Cognitive-Structural Aspects (아동의 상징놀이에 관한 이론적 고찰: 인지구조적 발달 이론을 중심으로)

  • Cho, Eun Jin
    • Korean Journal of Child Studies
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    • v.18 no.2
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    • pp.177-190
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    • 1997
  • The two major theoretical frameworks that have informed research on symbolic play and cognitive development were reviewed. Piaget and Vygotsky had different views of the role of symbolic play in children's development. For Piaget, play is primarily an assimilative activity; that is, in play, children modify reality to fit their existent cognitive schema and desires. In his view, play does not facilitate development, but it is used to consolidate existent concepts. For Vygotsky, play is a precursor to symbolization and is a leading factor in development. Particularly the lack of a sociocultural dimension in Piaget's theory brought about the influence of Vygotsky, for whom this dimension is central. However, the research yielded so far has not fully investigated the wider sociocultural elements that define and inform the play context. This article concludes by suggesting an approach to children's play that is directed by a proper estimation of the interaction between its cognitive, emotional, and sociocultural dimensions.

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A GN model of thermoelastic interaction in a 2D orthotropic material due to pulse heat flux

  • Hobiny, Aatef;Abbas, Ibrahim A.
    • Structural Engineering and Mechanics
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    • v.80 no.6
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    • pp.669-675
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    • 2021
  • A GN model with and without energy dissipations is used to discuss the waves propagation in a two-dimension orthotropic half space by the eigenvalues approach. Using the Laplace-Fourier integral transforms to get the solutions of the problem analytically, the basic formulations of the two-dimension problem are given by matrices-vectors differential forms, which are then solved by the eigenvalues scheme. Numerical techniques are used for the inversion processes of the Laplace-Fourier transform. The results for physical quantities are represented graphically. The numerical outcomes show that the characteristic time of pulse heat flux have great impacts on the studied fields values.

A Study on the Vibration Characteristics of 3-Dimension Submerged Vehicle in Consideration of Fluid-Structure Interaction (유체력을 고려한 3차원 수중압력선체의 진동특성에 관한 연구)

  • 손충렬;김경수;변효인
    • Journal of Ocean Engineering and Technology
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    • v.15 no.1
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    • pp.19-25
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    • 2001
  • Unlike structures in the air, the vibration analysis of a submerged or floating structure such as offshore structures or ships is possible only when the fluid-structure interaction is understood, as the whole or part of the structure is in contact with water. This paper introduces two methods to find natural frequency in consideration of fluid-structure interaction, direct coupled vibration analysis and fluid-structure modal coupled vibration analysis. The purpose of this study is to analyze the vibration characteristic of a submerged vehicle to obtain the anti-vibration design data, which could be used in the preliminary design stage. The underwater pressure hull of submerged vehicle is used as the model of this study. The F.E.M. model is meshed by shell and beam elements. Also, considering the inner hull weight, the mass element is distributed in the direction of hull length. Numerical calculations are accomplished by using the commercial B.E.M. code. The characteristics of natural frequency, mode shape and frequency-displacement response are analyzed.

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Association between Oral Health Status and Health Related Quality of Life (EuroQoL-5 Dimension) (성인의 구강건강 상태와 건강관련 삶의 질 관련성: EuroQoL-5 Dimension 구성요소를 중심으로)

  • Choi, Eun Sil;Lyu, Jiyoung;Kim, Hae-Young
    • Journal of dental hygiene science
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    • v.15 no.4
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    • pp.480-487
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    • 2015
  • The purpose of this study was to examine the association between oral health status and health related quality of life (HRQoL). The study used a nationally representative sample of Koreans (2013 Korea National Health and Nutrition Examination Survey) aged 19~64 years (n=3,252). Dependent variable was HRQoL, which was assessed with each component of EuroQol-5 dimension (EQ5D). Independent variable was oral health status (oral pain, chewing problem, speaking problem, and perceived oral health). After adjustment for confounders (socio-demographic factors, oral health behaviors, health behaviors, and physical conditions), the risk of having poor HRQoL was greater in adults with poor oral health status. The odds ratio (OR) of having pain/discomfort were 1.50 (95% confidence interval [CI], 1.22~1.86) for respondents with oral pain, 1.72 (95% CI, 1.33~ 2.22) for respondents with chewing problem, 1.79 (95% CI, 1.22~2.62) for respondents with speaking problem, and 1.36 (95% CI, 1.09~1.70) for respondents with poor perceived oral health. The OR of having anxiety/depression were 1.74 (95% CI, 1.28~2.38) when having a chewing problem, 1.72 (95% CI, 1.12~2.64) when having a speaking problem, and 1.54 (95% CI, 1.14~2.08) when rating his/her oral health poor. Among Korean adults, two of the EQ5D components were associated with oral health status. Future study is needed to examine the detailed causal relations between oral health status and HRQoL longitudinally.

A Research on the Paradigm of Interaction Based on Attributes (인터렉션 속성에 기초한 인터렉션 범식화 연구)

  • Shan, Shu Ya;Pan, Young Hwan
    • Journal of the Korea Convergence Society
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    • v.12 no.5
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    • pp.127-138
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    • 2021
  • The aim of this study is to demonstrate interaction as a describable field and tries to understand interaction from the perspective of attributes, thus building a theoretical to help interactive designer understand this field by common rule, rather than waste huge time and labor cost on iteration. Since the concept of interaction language has been brought out in 2000, there are varies of related academical studies, but all with defect such as proposed theoretical models are built on a non-uniform scale, or the analyzing perspective are mainly based on researcher's personal experience and being too unobjective. The value of this study is the clustered resource of research which mainly based on academical review. It collected 21 papers researched on interaction paradigm or interaction attributes published since 2000, extracting 19 interaction attribute models which contains 174 interaction attributes. Furthermore, these 174 attributes were re-clustered based on a more unified standard scale, and the two theoretical models summarized from it are respectively focuses on interaction control and interaction experience, both of which covered 6 independent attributes. The propose of this theoretical models and the analyzation of the cluster static will contribute on further revealing of the importance of interaction attribute, or the attention interaction attribute has been paid on. Also, in this regard, the interactive designer could reasonably allocate their energy during design process, and the future potential on various direction of interaction design could be discussed.

The Integration of Automatic Width Control and Gap Control Systems in Hot Plate Mills (열간 압연공정에서 판폭과 판두께의 통합제어)

  • 김병만;조형석
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.327-327
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    • 2000
  • Derivation of a slab dimension from the desired tolerance degrades the product quality, resulting in significant yield loss by trimming. This necessitates the dimensional control system to be operated in tighter dimensional accuracy. This paper presents an integral approach to a dimensional control system design taking into account the interaction between the edging process and the gap rolling process. To investigate the effects of each process controller, a simple PID controller is adopted as a preliminary study. The control performance is analyzed in detail in terms of the system response accuracy for various operating conditions.

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The magnetic dependence of 2-dimension quantum optical transition in electron-deformation potential phonon interaction systems in Ge

  • Choi, Hyenil;Cho, Hyunchul;Lee, Suho
    • Journal of IKEEE
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    • v.22 no.2
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    • pp.446-454
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    • 2018
  • In this work, we summarize the calculation processes of obtaining a scattering factor using with the equilibrium average projection scheme (EAPS), with moderately weak coupling (MWC) interaction, and obtain the line-shape formula of an electron-deformation phonon interacting system interested in the confinement of electrons by squarwell confinement potentials in quantum two dimensional system.. Through the numerical analysis, we analysis the magnetic dependence of absorption power, P(B) in several temperature and frequency difference dependence of absorption power $P({\Delta}{\omega})$, in several external field, where ${\Delta}{\omega}={\omega}-{\omega}_0$ and ${\omega}({\omega}_0)$ is the angular frequency (the cyclotron resonance frequency). The result of equilibrium average projection scheme (EAPS) in SER-MWC explains the properties of quantum transition quite well.

CFD Study on Particle Effect and Erosion in the Axial Compressor Blades and Shroud of Turbomachinery

  • Yoon J.S.;Chang Keun-Shik
    • 한국전산유체공학회:학술대회논문집
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    • 2003.10a
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    • pp.233-234
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    • 2003
  • Fly ash enters axial compressor when a turbomachinery is operated in an adverse environment. We have numerically investigated erosion of the blade and shroud in the turbulent compressor passage flow under the influence of gas-particle two-phase interaction. There have appeared quasi-three dimensional calculations on this subject but not the complete three-dimensional gas-particle interaction as done in the present work. Lagrangian particle tracing technique is used on the base of parallel processing for efficient calculation. Accuracy of the present code is tested using the benchmark lPL nozzle. In the DFVLR compressor blades, we have shown that a large number of particles passing through the tip clearance make impact on the blade tip and on the shroud. Higher degree of erosion is resulted by the heavier particles due to the centrifugal force.

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Cognition and Inferences of the Dimensional Terms in Korean (차원의 인지와 한국어 차원 낱말의 추론)

  • Ryu, Byong-Rae
    • Korean Journal of Cognitive Science
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    • v.20 no.4
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    • pp.439-479
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    • 2009
  • This paper examines the aspects of the inferences between the dimensional terms in Korean, and attempts to give an account of the inference patterns based on the interaction of gestalt and position properties of spatial objects. Following Lang (1987) and Lang, Carstensen & Simmons (1991), we advance the idea that the inferences are possible for the same axis of a spatial object, if some contextually induced positional specifications are reversed to the inherent proportion schema. Two simple inference rules are proposed and justified. They are applied under the assumption that the inferences of the dimensional terms are drawn in a unidirectional way, i.e, from the Primary Perceptional Space to the Inherent Proportional Schema.

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Computational Study on Particle Effect and Erosion in the Axial Compressor Blades and Shroud

  • Yoon J.S.;Chang Keun-Shik
    • 한국전산유체공학회:학술대회논문집
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    • 2003.10a
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    • pp.203-204
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    • 2003
  • Fly ash enters axial compressor when a turbomachinery is operated in an adverse environment. We have numerically investigated erosion of the blade and shroud in the turbulent compressor passage flow under the influence of gas-particle two-phase interaction. There have appeared quasi-three dimensional calculations on this subject but not the complete three-dimensional gas-particle interaction as done in the present work. Lagrangian particle tracing technique is used on the base of parallel processing for efficient calculation. Accuracy of the present code is tested using the benchmark JPL nozzle. In the DFVLR compressor blades, we have shown that a large number of particles passing through the tip clearance make impact on the blade tip and on the shroud. Higher degree of erosion is resulted by the heavier particles due to the centrifugal force.

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