• Digital Contents
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• no.2 s.129
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• pp.22-23
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• 2004

온라인게임‘A3’는 오픈베타 서비스를 실시한 후 5분만에 동시접속자 1만명, 하루만에 3만명의 회원을 기록해 최단기록을 경신했는가 하면 1주일만에 회원 4만5,000명을 돌파한 바 있다. ‘아삼’이라는 애칭까지 생기며 높은 충성도를 보인 사용자가 있었던 반면 국내 최초의 성인게임이라는 타이틀에는 왠지 부족하다는 혹평을 받기도 했다. 오픈베타 서비스 1년을 넘겼을 즈음해서 이 게임의 개발사 애니파크를 찾아 배길웅 개발이사를 만나봤다.

• Journal of the Korean Society of Food Science and Nutrition
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• v.22 no.6
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• pp.777-784
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• 1993

The bleaching effect of potato lipoxygenase Isoenzymes on ${\beta}-carotene$ was studied. Two lipoxygenase Isoenzymes(LOX-1, LOX-2) from potato tuber were purified by CM-cellulose, DEAE-cellulose ion exchange chromatography. LOX-1 and LOX-2 seemed to have bleaching effect on ${\beta}-carotene$ in the presence of linoleic acid, which the decrease in the formation of conjugated dienes. LOX-2 was founded to have a greater pigment bleaching activity than that of LOX-1.

• KIPS Transactions on Software and Data Engineering
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• v.7 no.9
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• pp.361-366
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• 2018

Previous studies on fear of crime used survey and interview to measure fear of crime. However, though these methods can measure fear of crime in past events, they cannot measure real time fear of crime. In this paper, we use EEG to measure fear of crime in real time. We measure and analyze the EEG of subjects watching the video and confirm the difference between three groups classified according to the degree of fear of crime. As a result, about two times more beta waves are shown when a group of subjects with a high degree of fear of crime watches the images of fear of crime and 1.5 times more beta waves are shown among the other groups. Although watching videos related to the crime increased the beta waves, the police video showed little increase in beta waves because the subjects can sense safety in the video even if it is related to crime.

• Applied Chemistry for Engineering
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• v.32 no.5
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• pp.504-508
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• 2021

In this study, the effect of molecular features of guest molecules on the structure, property, and formation of poly(vinyl alcohol) (PVA)/beta-cyclodextrin (bCD) inclusion compound hybrid films was investigated using three types of guest molecules such as hydroquinone (HQ), arbutin (AB), and tranexamic acid (TA). First, the successful formation of inclusion compounds between bCD and the guest molecules, and polymer/inclusion compound hybrid were proved using Raman spectroscopy. The effect of bCD-based inclusion compounds on the structure and property of PVA matrix composites containing inclusion compounds was also studied using X-ray diffraction (XRD) and thermal analyses such as differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). It was notable that the effect of TA to the crystalline structure of the PVA was significantly different from that of using other guest molecules including HQ and AB. It was also supported by a simple molecular simulation result. This article will be a good example for demonstrating the effect of molecular characteristics on the inclusion compound formation in polymer films, which can provide important information for relevant future research.

• Nuclear Engineering and Technology
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• v.26 no.3
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• pp.381-388
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• 1994

Recently, the American National Standards Institute (ANSI) had made some changes in the radiation sources specified from those in the original performance test criteria ANSI N13. 11-1983. In case or beta category, in addition to the high-energy $^{90}$ Sr/$^{90}$ Y beta source, the $^{204}$ Tl source was added because many workplaces have significant levels of lower energy betas. In this study, the performance or the Teledyne PB-3 personnel dosimetry system in the fields of $^{204}$ Tl and $^{90}$ Sr/ $^{90}$ Y beta was investigated using the PTB beta secondary standard sources. The new beta correction function of PB-3 personnel dosimetry system for $^{204}$ Tl beta was also developed in this response experiment. The results show that the Teledyne PB-3 personnel dosimetry system is very effective for $^{90}$ Sr/ $^{90}$ Y beta dose assessment. In case of $^{204}$ Tl beta radiation, however, the results of simple performance test indicated that the use of beta correction factor(=2.088) which was recommanded by manufacturer may result in unexpectable overestimation of delivered dose by about 60%, while the use of developed beta correction function could measure the delivered doses in errors of 15%.

• Microbiology and Biotechnology Letters
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• v.37 no.4
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• pp.399-404
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• 2009

This paper described the formulation of functional cosmetics and evaluation of anti-wrinkle efficacy in clinical test. Cosmetics were formulated with highly purified $\beta$-carotene obtained from the culture broth of recombinant E.coli cells. Edible oil for solubilizing $\beta$-carotene, vitamine E for long-term storage, detergent/stabilizer (2.0%) for the complete formation of oil/water emulsion, dimethicone (0.35%) for good skin care, and sorbitol for skin moisturizer were also added as ingredients. Physical or chemical degradation of formulated products stored at $0^{\circ}C$, $25^{\circ}C$, or $40^{\circ}C$ was not observed for 60-day testing period. In clinical test, 68% of applicants observed wrinkle decrease after 8-week treatment. This result indicates that newly formulated cosmetics have strong potential for improving wrinkle skin care.

• The Journal of the Korea institute of electronic communication sciences
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• v.9 no.11
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• pp.1277-1282
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• 2014

In this paper, we aimed to analysis EEG signals related to concentration of adolescents using letter visual stimulus to induce the concentration. The visual stimulus tasks were searching errors of propositional particle in several sentences. In the EEG signals, we specially focussed on SMR waves and mid-beta waves according to the results of a preceding research. Therefore we presented position of channel and frequency band of mid-beta significantly related to the concentration waves as the experimental results.

• Analytical Science and Technology
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• v.21 no.2
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• pp.117-122
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• 2008

Dual scintillator for simultaneous alpha- and beta-ray counting used by detection materials of a surface contamination monitor was developed. In this study, preparation method was not a heat melting method but a solvent method, by which the counting material was manufactured by dissolving the polymer materials with solvent. It was simplified the preparation process. Plastic scintillator for beta-ray counting was prepared by solidifying the casting solution mixed with organic scintillator, polymer, and solvent. ZnS(Ag) scintillator layer was prepared by screen printing the paste solution mixed with ZnS(Ag), paste, and solvent onto the plastic layer. The good counting ability for alpha- and beta-ray using the ZnS(Ag)/plastic dual scintillator prepared and possibility for the counting material of surface contamination monitor was confirmed.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2007.05a
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• pp.243-244
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• 2007

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.1786-1787
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• 2015

무안경 3차원 입체영상 시스템은 광고 패널, 공연 전시 등에 활용되고 있다. 본 연구에서는 무안경식 입체영상 시스템의 디스플레이로 활용되고 있는 렌티큘러 방식 3차원 입체 영상에 대해 화질변화에 따른 사용자의 반응을 뇌파 (Electroencephalogram, EEFG) 측정을 통해 분석하였다. 총 26명의 피험자를 대상으로 렌티큘러 방식의 디스플레이를 통해 최적입체영상과 왜곡입체영상을 차례로 제시하고 각 영상에 대해 획득한 뇌파를 통계 분석하여 상관관계를 확인하였다. 분석 결과 뇌파진동 중 알파파의 경우 최적입체영상과 왜곡입체영상 사이에서 통계적으로 유의미한 차이가 확인되지 않았으나 베타파의 경우 통계적으로 유의미한 차이가 확인되었다. 베타파의 경우 왜곡입체영상에서 최적입체영상보다 통계적으로 유의미하게 높게 나타났으며 이는 왜곡입체영상 시청 시 피로감 또는 불안감 증폭에 따른 베타파의 뇌파활동이 높아진 것으로 예상된다. 본 연구결과를 바탕으로 랜티큘러 방식의 무안경 입체영상에 대한 객관적 사용자 평가를 위해 뇌파분석을 활용한 접근 방법이 가능함을 확인하였다.