• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 하계학술대회 논문집 G
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• pp.2941-2943
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• 1999

The application of the aerial images are to find the 3-D elevations. Image matching techniques such as Multi-resolution techniques, WCC (Weighted Cross-Correlation), NSSR (Narrow Search Sub-pixel Registration) that we know robustly apply to images which have enough features. But the method is not adaptive in images which have not enough features due to increasing of disparity errors. In this paper, we propose Disparity Interpolation that decrease disparity errors occurring in the area where images have not enough features. By using real aerial images we compare the result from existing image matching techniques to the result from proposed method.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2005년도 공동추계학술대회
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• pp.571-578
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• 2005

Corporate credit rating analysis has drawn a lot of research interests in previous studies, and recent studies have shown that machine learning techniques achieved better performance than traditional statistical ones. This paper applies support vector machines (SVMs) to the corporate credit rating problem in an attempt to suggest a new model with better explanatory power and stability. To serve this purpose, the researcher uses a grid-search technique using 5-fold cross-validation to find out the optimal parameter values of kernel function of SVM. In addition, to evaluate the prediction accuracy of SVM, the researcher compares its performance with those of multiple discriminant analysis (MDA), case-based reasoning (CBR), and three-layer fully connected back-propagation neural networks (BPNs). The experiment results show that SVM outperforms the other methods.

• 대한수학회논문집
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• 제16권3호
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• pp.459-485
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• 2001

The aim of EIT (electrical impedance tomography) system is to image cross-section conductivity distribution of a human body by means of both generating and sensing electrodes attached on to the surface of the body, where currents are injected and voltages are measured. EIT has been suffered from the severe ill-posedness which is caused by the inherent low sensitivity of boundary measurements to any changes of internal tissue conductivity values. With a limited set of current-to-voltage data, figuring out full structure of the conductivity distribution could be extremely difficult at present time, so it could be worthwhile to extract some necessary partial information of the internal conductivity. We try to extract some key patterns of current-to-voltage data that furnish some core information on the conductivity distribution such s location and size. This overview provides our recent observation on the location search and the size estimation.

• 통합자연과학논문집
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• 제5권1호
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• pp.27-31
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• 2012

Relationship between reflection resonance and applied current density in Bragg photonic crystal has been investigated. Multiple bit encodes of distributed Bragg reflector features have been prepared by electrochemical etching of crystalline silicon by using various square wave current densities. Optical characterization of multi-encoding of distributed Bragg reflectors on porous silicon was achieved by Ocean optics 2000 spectrometer for the search of possible applications of multiple bit encoding of distributed Bragg reflectors such as multiplexed assays and chemical sensors. The morphology and cross-sectional structure of multi-encoded distributed Bragg reflectors was investigated by field emission scanning electron micrograph.

• Nuclear Engineering and Technology
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• 제51권3호
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• pp.904-907
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• 2019

Nuclear energy remains one of the world's major energy sources, making up over 10% of global electricity generation in 2017. Public acceptance of nuclear energy is essential for its adoption. From a practical perspective, it is beneficial to have a simple indicator that can predict the actual adoption of nuclear energy. Based on practical experience, the authors suggest tolerance and self-sufficiency as potential indicators that may predict the adoption of nuclear energy. By evaluating the cross-sectional data of 18 countries in 2013, this research assesses the actual impact of tolerance and self-sufficiency on public acceptance in order to identify the validity of the two variables. The results indicate that the two variables are statistically significant, while public acceptance is insignificant in explaining national adoption of nuclear energy. This may be because tolerance reflects national willingness to accept potential risk, while self-sufficiency explains a government's likelihood of developing non-carbon energy sources.

• Journal of Multimedia Information System
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• 제8권1호
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• pp.17-22
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• 2021

This paper proposes a wearable user interface intended for kids and parents using WearOS smartwatches. We first review what constitutes a kids smartwatch and then design UI components for watchfaces to be used by kids and parents. Different UI components ranging from activity, education, voice search, app usage, video, location, health, and quick dial are described. These components are either implemented as complications or on watchfaces and may require on-device standalone function, cross-device communication, and external database. We introduce a theme-based amusing UI for kids whereas simple and easily accessible components are recommended to parents' watchface. To illustrate use cases, we present 3 scenarios for enhancing communication between parents and child. To show feasibility and potential of our approach, we implement our proof-of-concept using commercial smartwatches, smartphones, and external cloud database. Furthermore, performance of checking app usages on different devices are presented, followed by discussion on limitations and future work.

• 한국직업건강간호학회지
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• 제31권3호
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• pp.125-136
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• 2022

Purpose: The aim of this systematic literature review was to synthesize and investigate the effects of shift workers' sleep in Korea. Methods: A search was conducted through three electronic databases using keywords such as "shift work" or "rotation work" and "sleep", with sleep as the independent variable, and 17 papers were reviewed. Results: The design of those 17 studies was analyzed in a cross-sectional analysis. The most commonly measured characteristic was quality of sleep, whereas the others were sleep disturbance, sleep efficiency, and sleepiness. The study outcome variables were job-related factors, mental health, wellness, stress, fatigue, and metabolic syndrome. Conclusion: The results inform sleep and health-promoting behaviors and improvement in shift workers' working condition.

• 임상간호연구
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• 제15권3호
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• pp.171-182
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• 2009

Purpose: The purpose of this study was to find out the research trend and analyze the evidence of research on massage interventions for patients in Korea. Methods: Literature database search from 2003 to 2008 was carried out including KSTUDY, RICHIS, RISS4U, and NANET using the following MeSH terms: massage and patients. Results: A total of 51 articles registered in Korea Research Foundation were reviewed for analysis. Major participants of the studies were patients with cancer, surgery patients, stroke patients, and preterm babies. The outcome variables most commonly measured were blood pressure, state anxiety, and pain. While massage intervention was reported having a significant effect on lowering anxiety and pain, the other effects of massage in patients were inconsistent. Conclusion: Massage intervention has evidence-based effects on reducing anxiety and pain in patients. A larger body of methodologically sound research is needed to verify the multidimensional effects of massage.

• Asia pacific journal of information systems
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• 제29권2호
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• pp.248-267
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• 2019

As merging online and offline channels into one single platform, individuals could easily and frequently switch between online and offline channels. In order for understanding such unique behaviors, this study attempts to explore why and how consumers choose their channels to search and purchase a product. We have drawn on multiple theories that have been used to explain individuals' judgment and decision making (i.e., construal level theory and regula-tory focus theory) in order to develop and tested two-way ANOVA based models of how both regulatory focus (e.g., promotion vs. prevention) and product types (e.g., experience goods vs. searching goods) including the psychological distance cue separately and jointly affect individuals' channel selection behavior (e.g., intention to use single channel vs. intention to use cross-channels). Our results have indicated that consumers with promotion-focus are more likely to use a single channel in experience goods rather than in searching goods when there exists the psychological cue. Based on our findings, the implication for both research and practice are discussed.

• 한국언론정보학보
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• 제46권
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• pp.511-555
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• 2009

미디어산업의 규제는 미디어 개별 콘텐츠에 대한 내용규제와 특정 분야의 진입 퇴출에 관한 소유규제로 나눌 수 있다. 본고에서 살펴보고자 하는 소유규제는 여론독과점의 방지와 다양성의 확보를 위한 핵심적인 법적 정책적 수단이다. 세계 각국은 자국의 특수한 미디어 환경을 기반으로 한 규제모델을 가지고 있으며, 한국 또한 환경변화에 조응할 수 있는 정책으로 미디어산업의 활성화와 수용자의 권익을 보호할 수 있는 최대공약수를 도출해야 할 정책적 과제를 안고 있다. 특히 공익성이 여타 어느 산업분야보다 중시되는 현실에서 미디어산업의 규제정책은 공익성에 대한 확고한 정책적 의지가 필요한데, 이를 실현시킬 소유규제 정책의 핵심적 요소가 이종매체 소유에 관한 것이다. 방통융합의 본격화로 미디어 산업의 지형이 변화하는 가운데 주요한 이슈가 되고 있는 이종매체 소유규제는 사업자별 이해관계와 미디어산업에 대한 관점에 따라서 사업자 및 시민단체, 정책당국의 갈등요인이 내재되어 있다. 이러한 상황에서 이종매체 소유규제의 근거논리인 '공익' 개념의 재정립 문제, 소유의 집중과 다양성의 문제에 대한 재개념화 필요성을 모색했다. 신문방송 겸영으로 대표되는 국내 미디어산업의 이종매체 교차소유 문제를 변화하는 산업지형에 비춰 재검토 함에 있어 국내 신문기업이 처한 현실적 조건을 위주로 살펴보았다. 또한, 미디어 융합시대에 촉발된 정책적 딜레마 상황을 이종매체 소유규제를 중심으로 논의한 후 효율적 갈등관리의 필요성을 제기하였다. 끝으로 미디어정책 기관의 독립성과 신뢰회복, 규제모델의 합리화, 이종매체 소유규제 이슈에 대한 각론적 접근, 매체균형발전을 위한 지원정책의 내실화라는 정책적 제언을 제시했다. 거대 미디어그룹의 여론과 산업에 대한 독과점 방지 정책이나 이종매체 소유규제는 해외 각국에서도 정책적 과제로 남아있음도 살펴보았다. 이종매체의 겸영 이슈를 포함한 미디어산업에서의 딜레마 상황과 이에 대한 이해관계의 조정은 매체환경의 급속한 변화에 부응한 '공익성과 산업성의 조화'라는 바탕 위에서 조속히 마련되어야 할 정책적 과제라 하겠다. 한국에서도 매체환경 변화에 부응하는 소유규제의 완화는 고려할 수 있으나, 신문과 방송 겸영을 포함한 이종매체 겸영은 신중한 접근이 필요하다. 이종매체 교차소유 완화는 여론독과점의 우려를 불식시킬 정도의 풍부한 저널리즘적 토양이 전제가 되어야 함을 역설적으로 확인할 수 있다.