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Analyzing the Major Issues of the 4<sup>th</sup> Industrial Revolution
Jeon, Jeonghwan,Suh, Yongyoon Asian Society for Innovation and Policy 2017 Asian Journal of Innovation and Policy Vol.6 No.3
Recently, the attention to the $4^{th}$ Industrial Revolution has been increasing. In the $4^{th}$ Industrial Revolution era, the boundaries between physical space, digital space, and biological space are becoming blurred because of the active convergence between various fields. There are many issues about the $4^{th}$ Industrial Revolution such as artificial intelligence, Internet of things, big data, and cyber physical system. To cope with the $4^{th}$ Industrial Revolution, an accurate analysis and technology planning need to be undertaken from a broad point of view. However, there is little research on the analysis of the major issues about the 4th Industrial Revolution. Accordingly, this study aims to analyse these major issues. Data mining such as topic modelling method is used for this analysis. This study is expected to be helpful for the researcher and policy maker of the 4th Industrial Revolution.
Identifying Core Robot Technologies by Analyzing Patent Co-classification Information
Jeon, Jeonghwan,Suh, Yongyoon,Koh, Jinhwan,Kim, Chulhyun,Lee, Sanghoon Asian Society for Innovation and Policy 2019 Asian Journal of Innovation and Policy Vol.8 No.1
This study suggests a new approach for identifying core robot tech-nologies based on technological cross-impact. Specifically, the approach applies data mining techniques and multi-criteria decision-making methods to the co-classification information of registered patents on the robots. First, a cross-impact matrix is constructed with the confidence values by applying association rule mining (ARM) to the co-classification information of patents. Analytic network process (ANP) is applied to the co-classification frequency matrix for deriving weights of each robot technology. Then, a technique for order performance by similarity to ideal solution (TOPSIS) is employed to the derived cross-impact matrix and weights for identifying core robot technologies from the overall cross-impact perspective. It is expected that the proposed approach could help robot technology managers to formulate strategy and policy for technology planning of robot area.
Evaluation Model for National Innovation Capability with considering ICT Infrastructure
Jeon, Jeonghwan,Geetha Karkuzhali 한국기술혁신학회 2019 한국기술혁신학회 학술대회 발표논문집 Vol.2019 No.11
For enhancing the national technology innovation competitiveness, an accurate assessment of the national technology innovation capability is required. National innovation competitiveness has been assessed by IMD and WEF internationally, however, a comprehensive and systematic analysis is lacking. CaRBS is based on the Dempster-Shafer theory of evidence, which allows for a measure of ignorance. A simplex plot method of representing data allows a clear visual representation to the degree of interaction of the support from the variables to the prediction of the objects. To illustrate the proposed approach, CaRBS is applied to the survey data from OCED, IMD, USPTO, ITU, and Surveyed data reported by KISTEP. As a result, Finland is the highest national innovation capability country among 20 OECD countries. The proposed approach is expected to be useful for evaluating national innovation capability.
( Jeonghwan Gwak ),( Geunpyo Park ),( Moongu Jeon ) 한국인터넷정보학회 2017 KSII Transactions on Internet and Information Syst Vol.11 No.4
Person re-identification is to match pedestrians observed from non-overlapping camera views. It has important applications in video surveillance such as person retrieval, person tracking, and activity analysis. However, it is a very challenging problem due to illumination, pose and viewpoint variations between non-overlapping camera views. In this work, we propose a viewpoint invariant method for matching pedestrian images using orientation of pedestrian. First, the proposed method divides a pedestrian image into patches and assigns angle to a patch using the orientation of the pedestrian under the assumption that a person body has the cylindrical shape. The difference between angles are then used to compute the similarity between patches. We applied the proposed method to real-time global multi-object tracking across multiple disjoint cameras with non-overlapping field of views. Re-identification algorithm makes global trajectories by connecting local trajectories obtained by different local trackers. The effectiveness of the viewpoint invariant method for person re-identification was validated on the VIPeR dataset. In addition, we demonstrated the effectiveness of the proposed approach for the inter-camera multiple object tracking on the MCT dataset with ground truth data for local tracking.
원자력 중대 사고에 대비한 영동 지역 일라이트의 방사성 세슘 흡착 특성 평가
황정환 ( Jeonghwan Hwang ),정성욱 ( Sungwook Choung ),박찬수 ( Chan-soo Park ),한정희 ( Jeong-hee Han ),전소담 ( Sodam Jeon ) 한국광물학회 2016 광물과 암석 (J.Miner.Soc.Korea) Vol.29 No.4
본 연구는 원자력 중대 사고 시, 환경에 유출된 방사성 세슘의 확산을 억제하기 위해 충북 영동지역 일라이트의 활용 가능성을 평가하였다. 영동 일라이트는 운모질 편암의 열수변질 작용에 의해 형성되었으며, 주요 구성 광물은 석영, 장석, 일라이트이다. 저농도 세슘 용액을 사용한 회분식 흡착실험 결과, 영동 일라이트의 흡착 분배 계수(K<sub>d</sub>)는 약 4,200 L kg<sup>-1</sup>으로 다른 점토 광물에 비해 비교적 높은 값을 가지며, 이는 일라이트에 존재하는 풍화된 모서리면(FES)의 영향으로 판단된다. 영동 일라이트와 세슘의 흡착등온선은 비선형 흡착 특성을 나타내며 단일 표면 한계 흡착 능력이 250,000 μg kg<sup>-1</sup>으로 우수한 흡착능을 보여주어 방사성 세슘 흡착제로서의 사용 가능성을 입증하였다. 이러한 결과는 추후 방사능 누출 사고 등의 긴급 상황 발생 시, 영동 지역 일라이트를 오염 확산 방지 및 정화작업에 사용하기 위한 평가 자료로 활용될 것으로 기대된다. This study evaluated potential application of illite, which is produced at Yeongdong area in Korea, to remove radiocesium released to environmental system through severe nuclear accidents. The Yeongdong illite was formed by metamorphose of micaceous schist in hydrothermal condition, and composed of quartz, illite, and albite. Sorption distribution coefficient (K<sub>d</sub>) of cesium by the Yeongdong illite was higher than the K<sub>d</sub> values for other clay minerals. It may be affected by preferential adsorption of cesium to Frayed Edge Sites (FES) on illite. Nonlinear isotherm models were suitable to describe the sorption processes for the Yeongdong illite. Its max. single layer capacity was 250,000 μg kg<sup>-1</sup> for cesium. Therefore, the Yeongdong illite could be an efficient and economic sorbent to prevent dispersion of radiocesium, and apply for remediation.