• Journal of the Korean Magnetics Society
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• v.25 no.4
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• pp.101-105
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• 2015

Recent theoretical calculations predicted that a system composed exclusively of 3d transition metals without 4d/5d transition metals or rare earth metals can have strong perpendicular magnetocrystalline anisotropy (MCA) if Fe and Ni layers are arranged appropriately. They considered only Fe-terminated surfaces, noting that Fe/MgO(001) and CoFeB/MgO(001) show strong perpendicular MCA. In this paper, we investigate magnetism and MCA of Ni/Fe(001) surface where Ni layer is positioned at the surface, by using complementarily the first principles calculational methods of Vienna Ab-initio Simulation Package (VASP) and Full-potential Linearized Augmented Plane Wave (FLAPW) method. Comparing results of magnetism and MCA obtained by VASP with the results by FLAPW method, we find the VASP results do not show big difference from results by FLAPW method. Magnetic moments of Fe and Ni are enhanced due to strong hybridization between Fe and Ni bands. MCA of Ni/Fe(001) is parallel to the surface, which implies the surface termination plays a crucial role in determining MCA of a system.

• Proceedings of the KIEE Conference
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• 1998.11b
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• pp.637-639
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• 1998

Educational software tends to be monotonous without the interaction between instructors and students. An unidirectional teaching system can't overcome these barriers because the learning process is monotonous without the bidirectional communication. The advanced network system can solve these problems. In this study, a bidirectional microprocessor simulator is developed and a new teaching model is proposed using the simulator. It was named JMPS (Java Microprocessor Simulator), which is a software to teach the microprocessor principles and applications. It has two advantages. First, it can teach the principles and applications of microprocessor effectively. Second, it runs on Internet and provides easy communication between a teacher and students.

• Journal of Korea Multimedia Society
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• v.20 no.10
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• pp.1697-1709
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• 2017

This paper aims to investigate the effect of anticipatory motion in Wall E (2008). For the purpose of the study, first of all, an overall discussion on the definition and role of anticipation presented through the related literature review. Based on this, the present study analyzed the functions of anticipatory movements of the main characters, Wall E and EVE in 29 scenes. As a result, this paper found that anticipation is involved in expressions of humanity, thought process, utterance and intonation, the degree of emotion and energy, reinforcement of the character's intention, and biological response within the film. Overall, these findings show that anticipation takes an important part in giving the illusion of life to the characters throughout the movie, which may imply that anticipation can be beneficial for characters with abstract form or limited modality. The ultimate goal of this study is to propose that the animation principles can be used as a tool to analyze character animation and can be applied academically or industrially to other fields such as artificial intelligence.

• Journal of The Korea Institute of Healthcare Architecture
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• v.13 no.1
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• pp.61-71
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• 2007

The Outdoor space is an essential element among healing environments for older people. The purpose of this study is to identify outdoor design issues which can improve the health conditions of the elderly living in nursing home. At first, the design principles of outdoor space for the mentally ill have been collected from the literature survey. Secondary, outdoor design requirements for the care program in nursing homes have been explored. Thirdly, good design elements have been collected from 6 nursing homes which have good outdoor space. Finally, Basic design principles of outdoor space of nursing homes in which older people with dementia live have been proposed by analysis and synthesis on the three stages before. As a result of this study, 6 dimensions in architectural planning of outdoor space for nursing homes have been presented : safety environment, various sensual stimulation, social interactions, support physical ability, accessibility, meditation.

• Proceedings of the Korean Vacuum Society Conference
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• 2014.02a
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• pp.180.2-180.2
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• 2014

Opening a bandgap by forming graphene nanoribbons (GNRs) and tailoring their properties via doping is a promising direction to achieve graphene-based advanced electronic devices. Applying a first-principles computational approach combining density functional theory (DFT) and DFT-based non-equilibrium Green's function (NEGF) calculation, we herein study the structural, electronic, and charge transport properties of boron-nitrogen binary edge doped GNRs and show that it can achieve novel doping effects that are absent for the single B or N doping. For the armchair GNRs, we find that the B-N edge co-doping almost perfectly recovers the conductance of pristine GNRs. For the zigzag GNRs, it is found to support spatially and energetically spin-polarized currents in the absence of magnetic electrodes or external gate fields: The spin-up (spin-down) currents along the B-N undoped edge and in the valence (conduction) band edge region. This may lead to a novel scheme of graphene band engineering and benefit the design of graphene-based spintronic devices.

• Proceedings of the Korean Vacuum Society Conference
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• 2009.02a
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• pp.229.1-229.1
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• 2009

• Proceedings of the Korean Magnestics Society Conference
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• 2015.05a
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• pp.49-49
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• 2015

• Proceedings of the Korean Magnestics Society Conference
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• 2015.05a
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• pp.53-54
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• 2015

• Proceedings of the Korean Magnestics Society Conference
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• 2015.05a
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• pp.77-77
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• 2015

• Proceedings of the Korean Magnestics Society Conference
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• 2015.11a
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• pp.61-62
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• 2015