• Korean Institute of Interior Design Journal
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• no.39
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• pp.108-115
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• 2003

The first object of this study is to clarify the newly demanded service to the visitor in a museum. And the second is to consider the Spatial Configuration on the layout of exhibition and shape of exhibition space from the view points of behavior of appreciation and other methodology, The results of this study are as follows : 1) Museums are required to offer sufficient service to the visitor for the purposes of interest, learning and sight-seeing 2) A strategic space where we can penetrate the whole room is required at the entrance of the room for the easy choice of exhibits. 3) The entrance of the room is suggested to be the most controled space.

• Korean Institute of Interior Design Journal
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• v.15 no.1 s.54
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• pp.71-78
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• 2006

This study aims to understand the meaning of 'wall' and spatial image transformation by the wall. To find the meaning of wall, some classical works and modern works - Le Corbusier's Domino system and Schroder House-are analyzed into functional aspect of wall, in result we know that wall has of evolved throughout history to become an Increasingly active component of our built environment. Whereas the wall permits variations in the human and natural environment, the wall could be changed a lot of different shapes. The results of this study are as follows; (1) Applying new attempt to the wall makes interactivity in spatial elements. (2) Through rotation of the wall, we find the periodicity of wall length with sine curve. (3) Wall made by points and linear elements can change the spatial image, because of there geometrical characteristics.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• v.22 no.3
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• pp.179-199
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• 2018

The paper explores a tri-trophic food chain model with density dependent mortality of intermediate predator. To analyze this aspect, we have worked out the local stability of different equilibrium points. We have also derived the conditions for global stability of interior equilibrium point and conditions for persistence of model system. To observe the global behaviour of the system, we performed extensive numerical simulations. Our simulation results reveal that chaotic dynamics is produced for increasing value of half-saturation constant. We have also observed trajectory motions around different equilibrium points. It is noticed that chaotic dynamics has been controlled by increasing value of density dependent mortality parameter. So, we conclude that the density dependent mortality parameter can be used to control chaotic dynamics. We also applied basic tools of nonlinear dynamics such as Poincare section and Lyapunov exponent to investigate chaotic behaviour of the system.

• Journal of applied mathematics & informatics
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• v.40 no.5_6
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• pp.1199-1215
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• 2022

This article aims to study the dynamical behaviours of a two species model in which non-selective harvesting of a prey-predator system by using a reasonable catch-rate function instead of usual catch-per-unit-effort hypothesis is used. A system of two ordinary differential equations(ODE's) has been proposed and analyzed with the predator functional response to prey density is considered as Hassell-Varley type functional responses to study the dynamics of the system. Positivity and boundedness of the system are studied. We have discussed the existence of different equilibrium points and stability of the system at these equilibrium points. We also analysed the system undergoes a Hopf-bifurcation around interior equilibrium point for a various parametric values which has very significant ecological impacts in this work. Computer simulation are carried out to validate our analytical findings. The biological implications of analytical and numerical findings are discussed critically.

• Proceedings of the KSR Conference
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• 2007.11a
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• pp.982-988
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• 2007

The input data for the interior material of the train is one of the key points for enhancing the accuracy of fire simulation. In this study, we investigated the Fire Test Methods for the Fire Dynamic Simulator modeling for railroad passenger trains. We should get the thermal inputs such as ignition temperature, conductivity, specific heat, vaporization heat, effective heat release. With the simple conduction model for cone-calorimeter test, they could get more than HRR. Kinds of methodology were introduced for better thermal data for real material.

• 한국전산유체공학회:학술대회논문집
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• 1996.05a
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• pp.74-84
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• 1996

Characteristic boundary conditions are discussed in conjunction with a flux-difference splitting formulation as modified from Roe's linearization. Details of how one can implement the characteristic boundary conditions which are compatible with the discrete formulation at interior points are given for different types of boundaries including subsonic outflow and adiabatic wall. The latter conditions are demonstrated through computation of supersonic ogive-cylinder flow at high angle of attack and the computed wall pressure distribution is compared with experiment.

• Proceedings of the KSME Conference
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• 2001.06a
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• pp.819-824
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• 2001

Most of rail fastening system used in the interior have depended on the foreign technologies. In this study, new rail fastening device is developed to estabilish the domestic technology. Especially, Pandrol and Vossloh rail fastening devices are analyzed to utilize the weak and strong points. New rail fastening device is designed to combine advantages of two other foreign devices.

• Journal of the Korean Statistical Society
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• v.33 no.4
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• pp.435-447
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• 2004

In additive nonparametric regression, Linton and Nielsen (1995) showed that the marginal integration when applied to the local linear smoother produces a rate-optimal estimator of each univariate component function for the case where the dimension of the predictor is two. In this paper we give new formulas for the bias and variance of the marginal integration regression estimators which are valid for boundary areas as well as fixed interior points, and show the local linear marginal integration estimator is in fact rate-optimal when the dimension of the predictor is less than or equal to four. We extend the results to the case of the local polynomial smoother, too.

• East Asian mathematical journal
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• v.39 no.1
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• pp.11-21
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• 2023

Non-trivial automorphisms of the unit disc in the complex plane can be classified by three classes; elliptic, parabolic and hyperbolic automorphisms. This classification is due to a representation in the projective special linear group of the real field, or in terms of fixed points on the closure of the unit disc. In this paper, we will characterize this classification by the distance function of the Poincaré metric on the interior of the unit disc.

• Journal of Korean Medical classics
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• v.30 no.3
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• pp.181-195
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• 2017

Objectives : This paper contemplates how the special features found in Moyuan as revealed in Wenyilun has continued from the Moyuan concepts of past includig Huangdineinjing. The author of this paper attempted to distinguish common and different points between the two, and how these features changed in the following generations. Methods : The concept of Moyuan as revealed in Huangdineinjing is first reviewed before laying out the concepts of Moyuan in Wenyilun by different categories. These two concepts are then compared. A Chinese medicine literature database is used in continuing this study, and materials are selected with relation to the special features of Moyuan. Results : The special feature of half-exterior half-interior found in the Moyuan in Wenyilun is similar with that in Neijing in that they both thought Moyuan existed between the stomach, the lungs, and the five organs. The concealability of Moyuan is similar with the explanation of Moyuan in Suwen nuelun, and it is related with the story of Gaohuang in Chunqiu Zuozhuan. Compared to the fact that the concept of Moyuan in Neijing is explained as that pathogenic factor enters the surface of the body in sequence, the concept of Moyuan in Wenyilun is conveyed in that the pathogenic factor conceals itself first before being divided into exterior and interior. Moyuan is also related to upright qi, and Gaohuang-yuan: origin of Gaohuang, too, is connected Shenjiandongqi: the energy that moves between the two kidnets, and also the triple burner. Conclusions : The concepts of "Half-exterior Half-interior", concealability, and "divide it into several places in half-exterior", and upright qi contained within the Moyuan in Wenyilun are studied for their origins, and this effort is anticipated to be greatly helpful in both understanding the historical contexts of Wuyouke Wenyilun and conducting studies on clinical application of Moyuan theory.