• Journal of the Korea Society of Computer and Information
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• v.19 no.12
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• pp.177-185
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• 2014

The smart devices are used more and more, these days. It make the teaching method using smart devices possible and it is considered as important method in the modern society. Though this kind of approach is prospering in foreign countries, it is not so in the domestic education system. Therefore, this paper proposes the mobile web system supporting the active interaction between the teacher and the students for the domestic education. This system can be used everywhere smart device is connected to the internet. The teacher set a question and the students answers against it through the system in real time. All questions and answers are written into the system and it can be checked again visually. It makes teachers and students trace and evaluate their interaction. And the teacher can download those result in microsoft Excel file format. We did a survey on this system to students and got positive response.

• Proceedings of the Korea Contents Association Conference
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• 2010.05a
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• pp.431-433
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• 2010

기존의 연구는 동작의 사실성에 비해 다양한 에이전트들의 각기 다른 동작 패턴과 환경 변화에 의한 다양한 움직임의 변화를 표현하는 데에는 한계가 있다. 실제 현실과 논리적으로 부합하는 Agents를 설계하기 위해서는 가상 환경에 대하여 능동적으로 반응하고, 그들과 상호작용하면서 스스로 능동적으로 변화함으로써 다양한 동작들을 수행할 수 있는 Agent가 필요하다. 본 논문에서는 가상 세계에서 일어날 수 있는 다양한 상황들을 제시하고, 이에 따른 다양한 가상 에이전트의 행동 변화를 위한 모델링을 제시하고자 한다.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2004.11a
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• pp.20-20
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• 2004

• The Journal of the Korea Contents Association
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• v.20 no.1
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• pp.16-24
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• 2020

The study empirically explored factors influencing How storytelling factors in social networking services, SNS, affect consumer response on the uses and gratification theory. conducted an analysis of 120 university students attending universities in the Seoul metropolitan area using an experiment. The results of this study are as follows: first, The storytelling factors, relevance and veracity have a positive effect on clarity. second, it has been shown that only veracity has a positive effect on parai-social interaction with media figures with emotional attachment. third, para-social interactions have been shown to influence content attitudes and orality sequentially. This study deals with the effect of SNS storytelling on the consumer's part, providing practical implications for enhancing content attitudes and word-of-mouth, by increasing para-social interactions with consumers while identifying the components that should enhance the way SNS is delivered in terms of storytelling.

• Journal of the Korean Chemical Society
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• v.28 no.5
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• pp.284-292
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• 1984

This paper aims to predict the substituent and Lewis acid catalysis effect or reactivity on the regioselectivity of (4+2) cycloaddition reaction of the substituted-E-arene-diazocyanides and nitrosobenzenes. Frontier orbital theory (FMO) has been applied to thermal and catalyzed Diels-Alder reaction by means of CNDO/2 and EHT-SPD methods. It has been found that: (1) The above reaction is positive rho(${\rho}$) values in Hammett equation, so it takes normal electron demand reaction, and four-frontier orbitals and Anh methods are identical with experimental major regioisomer.(2) When electron withdrawing radicals are substituted HOMO and LUMO energies of dienophiles are reduced, and the reactivity is increased. (3) The major regioisomer is predicted as B type, as the Lewis acid makes complexes of dienophile, and polaries LUMO coefficients of dienophile in an opposite way. (4) The linear correlation of Hammett is indicated in the graph of stabilized energies(${\Delta}$E) and sigma(${\sigma}$).

• Environmental Analysis Health and Toxicology
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• v.23 no.3
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• pp.165-170
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• 2008

간의 약물대사는 흡수된 외인성물질의 배설을 위한 중추적인 역할을 수행하면 이 반응은 일상대사와 이상대사효소로 구성된 약물대사효소계에 의해 매개된다. 약물대사효소의 발현과 활성은 외인성물질의 노출에 의해 유도되거나 억제되며 이 결과는 약물상호작용을 발생시키는 주요한 원인이다. 또한 당뇨, 비만, 영양실조, 음주, 염증반응 등의 병적인 생리상태는 간에서 약물대사효소의 발현과 활성을 조절하는 것으로 보고되고 있다. 이러한 변동은 치료약물 또는 환경오염물질에 대한 인체의 반응성에 영향을 미치며 결과적으로 예측하지 못한 부작용이나 독성을 발생시킬 수 있다. 본 논문에서는 당뇨병에서 약물대사효소의 발현변화를 정리하였다.

• Proceeding of EDISON Challenge
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• 2014.03a
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• pp.75-88
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• 2014

본 연구에서는 비선형 Poisson-Boltzmann 식의 해를 구할 수 있는 웹 기반 EPBS를 이용하여 이온채널의 전하 분포와 유전률이 이온채널의 이온선택성에 미치는 영향에 대해 알아본다. 모델로 사용한 이온채널은 이온채널과 유사한 구조를 갖는 합성 단백질인 고리형 펩타이드 나노튜브와 자연계에 존재하는 Gramicidin A 이다. 계산 결과로부터 용매인 물과 단백질의 유전율 차이에 의해 이온이 이온채널을 통과할 때 반응장이 생성되며, 이는 이온과 상호작용을 통해 이온 종류에 관계없이 이온 통과를 방해하는 에너지 장벽을 형성함을 알 수 있다. 한편, 두 이온채널 부분 전하, 특히 골격에 존재하는 카르보닐기의 쌍극자 모멘트에 의해 이온채널 내부에는 0 보다 작은 정전기 퍼텐셜이 형성된다. 이온채널 내부의 총 정전기 퍼텐셜은 이온채널의 부분 전하에 의한 정전기 퍼텐셜과 유전률 차이에 의한 반응장의 합으로 나타나며, 계산 결과 0 보다 작은 값을 갖는다. 이로부터 본 연구에서 사용된 두 종류의 이온채널이 양이온에 선택성이 있음을 알 수 있다.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.8 no.2
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• pp.207-216
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• 1997

This study was conducted to investigate the communicative intent between Reactive Attachment Disorder(RAD) and Developmental Language Disorder(DLD). The subject of this study were 20 27-51 monthold children(10 RAD Children, 10 DLD children) functioning at similar stage of language development. The communicative intent was investigated vertical and horizontal dimension. Rating of vertical communicative intent was based on the assessment scales devised by Wetherby and Prutting(1984). Horizontal dimension was measured by the assessment guidelines of Wetherby and Prizant(1989). All the data were rated by two rators independantly. 1) In communicative intent, vertical development level of DLD children was more sophiscated than that of RAD children. 2) DLD children expressed more horizontal communicative intent than RAD children. The percentage of the three major categories(behavioral regulation, social interaction, and joint attention) of communicative intent in DLD children was lined up social interaction>joint attention>behavioral regulation. On the contrary, RAD children displayed in order of behavioral regulation>social interaction>joint attention. In addition, DLD children showed diversely as compared with RAD children.

• Korean Journal of Food Science and Technology
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• v.20 no.1
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• pp.119-124
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• 1988

The desmutagenic effects of ${\alpha}$-hydroxycarbonyl compounds, such as glyceraldehyde, glycolaldehyde, dihydroxyacetone, furfural, 5-hydroxymethylfurfural, maltol, acetol and acetoin and ${\alpha}$-dicarbonyls, such as diacetyl, glyoxal, methyl glyoxal and 2, 3-pentanedione were investigated against the mutagenic heterocyclic amines, such as Trp-P-1, Trp-P-2, Glu-P-1, Glu-P-2 and IQ. Most of the carbonyl compounds suppressed the mutagenicity of heterocyclic amines for S. typhimurium TA98, ${\alpha}$-dicarbonyl compounds showing a higher desmutagenic effect than ${\alpha}$-hydroxycarbonyl compounds. Among the ${\alpha}$-hydroxycarbonyl compounds, glyceraldehyde, glycolaldehyde and dihy-droxyacetone showed more effective desmutagenicity, and diacetyl among the ${\alpha}$-dicabonyl compounds had the highest desmutagenic effect. These carbonyl compounds alone also showed mutagenicity to S. typhimurium TA100 without S-9 mix. The reaction of carbonyl compounds with mutagenic heterocyclic amines also eliminated the mutagenicity of the former for S. typhimurium TA100.

• Journal of the Korea Computer Graphics Society
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• v.20 no.4
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• pp.9-16
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• 2014

This paper proposes a novel method that couples fluid and deformation/fracture. Our method considers two interaction types: fluid-object interaction and fluid-fluid interaction. In fluid-fluid interaction, we simulate water and smoke separately and blend their velocities in the intersecting region depend on their densities. Our method separates projection process into two steps for each of water and smoke. This reduces the number of grid cells required for projection in order to optimize the number of iterations for convergence and improve stability of the simulation. In water projection step, smoke region regarded as the cells with Dirichlet boundary condition. The smoke projection step solves water region with Neumann boundary condition. To take care of fluid-object interaction, we make use of the fluid pressure to update velocities of the each of the mass points so that the object can deform or fracture. Although our method doesn't provide physically accurate results, the various examples show that our method generate appealing visuals with good performance.