• 경영정보학연구
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• 제25권4호
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• pp.183-204
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• 2023

전 세계적으로 유행한 COVID-19로 인해 비대면 행사가 많이 개최되며, 2021년도에 메타버스가 많은 관심을 받게 되었다. 많은 회사들이 메타버스에 대한 투자를 발표하고 주식 시장에도 큰 변화를 일으킴으로써 메타버스의 가치에 대한 연구의 중요성이 커지고 있다. 본 논문은 이러한 사회 현상을 기반으로 메타버스 투자 계획과 주가 사이의 관계를 분석한다. 2019년부터 2021년까지 수집된 Lexis-Nexis 뉴스 데이터를 토대로 이벤트 연구방법론(event study method)을 사용하여 이러한 관계를 실증적으로 검토하였으며, 세부적인 요인들을 설정하여 선형회귀분석을 실시하였다. 결과적으로, 메타버스 관련 계획은 기업 가치에 긍정적인 영향을 미친다는 결과를 확인할 수 있었다. 기술적인 측면에서는 메타버스 가능 기술(예: NFT, VR 기기, 디지털 트윈)과 공통 기술(예: 반도체, 인공지능, 클라우드) 두 변수 모두 시장 수익률에 긍정적인 영향을 미치는 것으로 나타났으며, 특히 가상 환경의 중요성이 강조되었다. 또한 전략적 관점에서 급진적 혁신(예: 피보팅, 기업 인수)은 점진적 혁신(예: 파트너십, 기술 투자)보다 시장 수익에 더 긍정적인 영향을 미치는 것으로 나타났다. 마지막으로 메타버스 산업은 서비스 산업군에 속하지 않은 회사(예: 전자 장치, 기계 장치)에서 더 긍정적일 수 있다는 결과를 보였다. 학술적으로 메타버스의 혁신적 가치와 중요 요인에 대해 실증적으로 규명하였다는 점에서 연구의 의의가 있다.

• 한국정보통신학회논문지
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• 제12권2호
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• pp.401-406
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• 2008

낙상이 탈골, 골절, 치명적인 머리 부상이나 심지어 죽음과 같은 심각한 결과를 초래하기 때문에 낙상 사건 검출은 특히 혼자 사는 노인들에 대해 가장 일반적인 문제들 중의 하나이다. 낙상이나 낙상과 관련된 부상들을 방지하기 위해서 최근 몇몇 기존 비디오 센서 기반의 방법들은 낮은 낙상 검출율을 보여주고 있다. 낮은 검출율 문제를 개선하고 시스템 성능을 높이기 위해, 본 논문은 실시간 환경에서 연속하는 차영상 간의 차와 시간적 템플릿(temporal templates)을 이용한 노인들에 대한 새로운 낙상 사건 검출 방법을 제시하였다. 제안된 알고리즘은 비록 한 대의 USB PC 카메라에 의해 획득된 낮은 질의 비디오 시퀀스임에도 불구하고 96.43%의 성공적인 검출율과 3.125%의 낮은 false positive rate를 얻었다. 실험 결과는 높은 검출율과 낮은 false positive rate에 관한 매우 기대되는 성능을 보여주고 있다.

• 한국IT서비스학회지
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• 제14권1호
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• pp.263-276
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• 2015

As a social being, people can cooperate and control one another through the power of reputation, which is a critical opinion of someone given by others. Nevertheless, there have been obstacles in clarifying the identity of traditional types of reputation, for they are mostly words of mouth passed among members of a society. However, due to dramatic technological advancement and widespread use of the Internet and social media, now we can clearly see and analyze written reputations, which used to be passed only from mouth to mouth. Against this background, this study examines whether a negativity bias-a notion that an event of a more negative nature has a greater effect on one's psychological state than a positive event-applies to spread of reputation online, and examines related factors and effects. To this end, reputation-related online comments left by social media users during the election period of Korea's 6th provincial election on 4 June 2014 were analyzed. For the analysis, a Bass diffusion model was used, which is based on the innovation diffusion theory. The analysis results confirmed that, at online forum, negative reputations spread more quickly and more widely than positive ones, had a greater impact, and mass media such as online news outlets had a significant influence on spread of reputation online.

• 한국콘텐츠학회논문지
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• 제10권11호
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• pp.92-101
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• 2010

세계의 많은 도시들은 국제 행사의 개최를 통해 각 도시의 인지도와 이미지를 제고하려는 노력을 기울이고 있다. 본 연구에서는 대형 스포츠 이벤트인 2008 베이징 올림픽이 베이징 이미지에 미치는 영향에 대해 부산시민 197명에 대한 설문조사를 실시하여 살펴보았다. 수집된 자료의 분석 결과, 주말의 베이징올림픽 시청시간은 베이징에 대한 친밀감, 베이징에 대한 태도와 정적인 상관관계를 갖는 것으로 나타났다. 베이징에 대한 친밀감과 베이징 올림픽 게임 운영에 대한 평가는 베이징에 대한 이미지, 베이징에 대한 태도, 베이징에 대한 방문의도에 유의미한 영향을 미치고, 그 중에서 베이징에 대한 친밀감이 더욱 큰 영향을 미치는 것으로 나타났다.

• 한국인지과학회:학술대회논문집
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• 한국인지과학회 2010년도 춘계학술대회
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• pp.48-54
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• 2010

INTRODUCTION Interaction between temporal events at the millisecond level is important for visual and tactile interaction. OBJECT The aim of the present study is to identify any neural signature, as reflected in event-related potentials (ERP), for the integrative processes when the two sensory modalities are stimulated in synchrony as opposed to when they are stimulated separately. METHOD The basic strategy was to compare ERP signals obtained with simultaneous visual and tactile stimulation with a linear summation of ERP patterns obtained with each modality stimulated separately. Condition were presented, paired with various stimulus-onset-asynchronies (SOA) ranging from - 300 ms (tactile-first) to 300 ms (visual-first), and in trials where only one modality was stimulated alone. RESULT A positive deviation was located in observed ERP at C4 electrode (contralateral to the stimulated hand) at 200-400 ms, in comparison to the predicted ERP. The deviation was present at all SOAs other than -300ms (tactile-first) and 300 ms (visual-first). There was also a positive deviation at occipital leads at the 50-ms SOA (visual-first) trials. DISCUSSION It suggested that neural signatures of cross-modal integration occur within a limited time-window. The deviations were specifically localized at the contralateral somatosensory and visual cortices, indicating that the integration happens at or before the level of the primary cortices.

• 아태비즈니스연구
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• 제13권1호
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• pp.247-262
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• 2022

Purpose - The purpose of this study is to examine the impact of the Pandamic Declaration on 'untact firms' listed in KOSPI and KOSDAQ market in order to verify Investor Mania Hypothesis. Design/methodology/approach - This study collected financial data for 44 untact firms in KOSPI and KOSDAQ market. Then, we employed ESM(Event Study Methodology), EGARCH model and DID(Difference-In-Difference) for analysis. Findings - First, in contrast with the benchmarking index, KOSPI 200 which shows a negative (-) abnormal return trend, the untact firms have positive abnormal return trend consistently. Second, after the Pandemic Declaration, the variability of abnormal return for the untact firms is found to be significantly positive. Third, we find that the cumulative abnormal return and volatility of the untact firms significantly increase after the Pandemic Declaration. Research implications or Originality - Based on the Investor Mania Hypothesis, we confirm that the market potential of untact firms after the Pandemic Declaration is observed when compared with the KOSPI 200.

• Asia Marketing Journal
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• 제18권1호
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• pp.37-53
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• 2016

The purpose of this study is to show that the effectiveness of utilitarian versus hedonic attributefocused advertisement on product evaluation depends on the arousal level of positive emotion, and to explore mediation effect of cognitive response to utilitarian attribute-focused advertisement and affective response to hedonic attribute-focused advertisement on the effectiveness of utilitarian versus hedonic attribute-focused advertisement. This research employs a 2 (arousal level: mild vs. elevated) × 2 (advertisement type: utilitarian vs. hedonic) between-subjects design, and 200 undergraduate students participate in the experiment, in which there are 50 students at each experimental group. The results of ANCOVA with positive emotion level as a covariate on advertised product evaluation show significant interaction effect of arousal level and advertisement type, and no effect of positive emotional level. Both of the mediation effects of the cognitive response and those of the affective response are significant. Participants under mild (elevated) arousal of positive emotion more positively evaluate the product in utilitarian (hedonic) attribute-focused advertisement. The positive effect of utilitarian (hedonic) attributefocused advertisement on product evaluation is partially mediated by cognitive (affective) response to the advertisement when consumers are under the mild (elevated) arousal of positive emotion. The results of this study show that advertisers should use utilitarian (hedonic) attribute-focused advertisement to consumers under the mild (elevated) arousal of ambient positive emotion, which should be searched by exploring what kind of event they have experienced.

• 한국식생활문화학회지
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• 제29권6호
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• pp.528-538
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• 2014

The purpose of this study was to investigate the relationships among recognition, preference, and purchasing characteristics for Changnyeong onions and garlic as well as festival satisfaction among participants at agricultural product festivals in the Changnyeong region. Results showed that festival satisfaction of 'place of festival' was highest while 'convenience facility & event contents' earned the lowest scores. Most subjects (90.5%) had purchased Changnyeong agricultural and processed products. A major purchasing type was fresh agricultural products (66.7%). The pathways to recognize Changnyeong agricultural products were mostly 'promotion by related institutions' (22.0%), 'family relatives' (20.8%), 'mass media' (16.6%), and 'festivals and events' (16.1%). The most considered factors for purchasing regional products were 'geographical origin' and 'ingredients'. Changnyeong onion showed higher scores for recognition and preference and rate of purchase experience and intention than for garlic. The correlation coefficients of recognition and preference for onion and galic were 0.603 (p<0.001) and 0.598 (p<0.001), respectively. The explanation power ($R^2$) of related variables for purchase of Changnyeong onions was 0.258. The regression coefficients (${\beta}$) for 'recognition', 'preference' and 'convenient facility & event contents' were positive, whereas the regression coefficient for 'price' was negative. Recognition, preference, and convenient facility & event contents with garlic purchase showed a positive relationship ($R^2$=0.253). The most effective promotion method to increase sales of Changnyeong agricultural products was 'local festivals and events' (27.8%).

• 한방재활의학과학회지
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• 제23권4호
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• pp.203-212
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• 2013

Objectives This study was to investigate the correlation of low back pain, stress by event, and fear-avoidance beliefs caused by traffic accident. Methods We investigated 103 cases of out-patient with traffic accident. The patients answered that Visual Analogue Scale (VAS), Impact of Event Scale Revised Korean Version (IES-R-K), and Fear-Avoidance Beliefs Questionnaire (FABQ) on the first medical examination. We calculated statistical significance with this data. Results VAS, IES-R-K, and FABQ scores of the female patients with the traffic accident were higher than the male patients. VAS, IES-R-K, and FABQ scores showed low significant positive correlation and showed partial correlation between IES-R-K and FABQ, controlled by VAS, had no statistical significance in this research. Conclusions More considerations on pain, stress by event, and fear avoidance belief should be needed in treatment of the traffic accident patients.

• 천문학회보
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• 제35권1호
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• pp.48.1-48.1
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• 2010

Four of nine exoplanets found by microlensing were detected by the resonant caustic, which represents the merging of the planetary and central caustics at the position when the projected separation of a host star and a bounded planet is s~1. One of the resonant caustic lensing events, OGLE-2005-BLG-169, was a caustic-crossing high-magnification event with A_max ~800 and the source star was much smaller than the caustic, nevertheless the perturbation was not obviously apparent on the light curve of the event. In this paper, we investigate the perturbation pattern of the resonant caustic to understand why the perturbations induced by the caustic do not leave strong traces on the light curves of high-magnification events despite a small source/caustic size ratio. From this study, we find that the regions with small magnification excess around the center of the resonant caustic are rather widely formed, and the event passing the small-excess region produces a high-magnification event with a weak perturbation that is small relative to the amplification caused by the star and thus does not noticeably appear on the light curve of the event. We also find that the positive excess of the inside edge of the resonant caustic and the negative excess inside the caustic become stronger and wider as q increases, and thus the resonant caustic-crossing high-magnification events with the weak perturbation occur in the range of q $\leq$ 10-4. We determine the probability of the occurrence of events with the small excess $|\varepsilon|{\leq}3%$ in high-magnification events induced by a resonant caustic. As a result, we find that for the Earth-mass planets with a separation of ~2.5 AU the resonant caustic high-magnification events with the weak perturbation can occur with a significant frequen.