http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김정준,김선겸,김영균,장태석,김휘준,김용진,최현주,Kim, Jungjoon,Kim, Sungyeom,Kim, Youngkyun,Jang, Taesuk,Kim, Hwi-jun,Kim, Youngjin,Choi, Hyunjoo 한국분말재료학회 (*구 분말야금학회) 2021 한국분말재료학회지 (KPMI) Vol.28 No.3
Iron-based amorphous powder attracts increasing attention because of its excellent soft magnetic properties and low iron loss at high frequencies. The development of an insulating layer on the surface of the amorphous soft magnetic powder is important for minimizing the eddy current loss and enhancing the energy efficiency of high-frequency devices by further increasing the electrical resistivity of the cores. In this study, a hybrid insulating coating layer is investigated to compensate for the limitations of monolithic organic or inorganic coating layers. Fe<sub>2</sub>O<sub>3</sub> nanoparticles are added to the flexible silicon-based epoxy layer to prevent magnetic dilution; in addition TiO<sub>2</sub> nanoparticles are added to enhance the mechanical durability of the coating layer. In the hybrid coating layer with optimal composition, the decrease in magnetic permeability and saturation magnetization is suppressed.
김선겸(Kim, Sun-Kyum) 국제관광산업학회 2016 국제관광산업연구 Vol.9 No.1
This study placed priority to disclosing the entrepreneurial patterns and attributions based on management methods if what factors are uppermost considered when entrepreneurial selection of venture entrepreneurs to set subjection of research according to the independent stores and chain stores. It made inquiries into the difference based on the demographic characteristic of research objects, verication of survey tool’s validity and reliability, motive by foodservice-entrepreneurial methods, types of business and business conditions through hypothesis testing for the analytic results and discussion. In the result, this study showed that they make start a new enterprise with management ability, competitive item and their own idea by independent store compared to the result supported by the existing studies, which they decide on a new enterprise through well-recongnized and specialized preparatory process under the present crisis, stagnation and saturation of foodservice industry, given they are venture entrepreneurs contrary to the diversied result of existing sample. Accordingly, it is imperative to give a careful consideration of chain brand as well as approach types of business related ti preliminary experience and career for more stable management to start a new enterprise.
소셜 데이터의 주권과 투명성 및 신뢰성 확보를 위한 소셜 네트워크에서의 블록체인 활용방안 연구
김선겸(Sun-Kyum Kim) 한국디지털콘텐츠학회 2022 한국디지털콘텐츠학회논문지 Vol.23 No.10
Recently, social network services are difficult to check how the original owners data is being used, so it is processed secondarily or tertiarily without the original owners consent, so that the processor obtains economic benefits or the user cant confirm the fact due to the indiscriminate overflow of information. It is difficult to distinguish information that is not. In this study, as a way to apply block chain to social networks to solve this problem, Hyperledger fabric is used to collect friends and topical data analyzed from social networks, and consensus and verification within the topic-based community. We present a blockchain model that provides data with high transparency and reliability by securing data sovereignty and filtering rumors/false information/fake news by blocking data, and describes the implementation of its prototype. By developing a prototype using Hyperledger Fabric and IPFS, the potential of the system was confirmed.
동시출현단어 분석을 활용한 비탈면 붕괴 예측 및 분석 연구에 관한 지적구조 분석
김선겸 ( Sun-kyum Kim ),김승현 ( Seung-hyun Kim ) 대한지질공학회 2021 지질공학 Vol.31 No.3
최근 드론 및 빅데이터, 인공지능 등 디지털 기술을 활용한 비탈면 연구를 수행하고 있으나 다소 미흡한 실정이며, 여전히 비탈면 붕괴 대비에 취약하다. 이러한 이유로 비탈면 붕괴에 효과적으로 대처하기 위해 디지털 기술을 활용한 비탈면 붕괴 예측 및 분석 연구에 대한 발전방향을 제시하는 것이 필연적이며, 이를 위해 비탈면 붕괴 예측 및 분석에 관한 이해가 선제되어야 한다. 본 연구는 비탈면 붕괴 예측 및 분석 연구의 지적구조를 규명하여 연구방향을 제시하기 위해 2016년 1월 1일부터 2020년 12월 31일까지의 5년간의 Web of Science 기반으로 문헌 데이터를 수집하고 이를 동시출현단어를 활용하여 분석하였다. 네트워크 분석을 통하여 세부 주제 영역을 밝히고, 키워드 간의 지적 관계를 시각화하여 관계, 중심성 분석을 통한 전역 및 지역 중심성이 높은 키워드를 도출하였다. 또한 군집분석을 실시하여 형성된 군집을 다차원축적지도에 표시하였으며, 각 키워드들 간의 상관관계에 따른 지적구조를 제시하였다. 이러한 연구의 결과는 비탈면 붕괴 분석 및 예측 연구의 지적구조를 밝히고, 향후 연구 방향을 찾는데 도움이 될 것으로 기대한다. Although it is currently conducting slope management and research using digital technologies such as drones, big data, and artificial intelligence, it is still somewhat insufficient and is still vulnerable to slope failure. For this reason, it is inevitable to present the development direction for research on prediction and analysis of slope failure using the digital technologies to effectively deal with slope failure, which requires a preemptive understanding of prediction and analysis of slope failure. In this paper, we collected literature data based on the Web of Science for five years from January 1, 2016 to December 31, 2020 and analyzed by co-word analysis to identify the domain structure of research on prediction and analysis of slope failure. Detailed subject areas were identified through network analysis, and the domain relationships between keywords were visualized to derive global and regionally oriented keywords through relationship, centrality analysis. In addition, the clusters formed by performing cluster analysis were displayed on the multidimensional scailing map, and the domain structure according to the correlation between each keyword was presented. The results of this study reveal the domain structure of research on prediction and analysis of slope failure, and are expected to be usefully used to find future research directions.
김선겸(Kim, Seonkyeom),박진영(Park, Jinyoung),박진혁(Park, Jin-Hyuc) 대한신경계작업치료학회 2021 재활치료과학 Vol.10 No.1
목적 : 본 연구는 시각자극을 사용하여 성별에 따른 일화기억과 공간인지의 차이를 확인하고 비교하기 위해 진행되었다. 연구방법 : 연구에서는 시각적인 자극을 사용한 일화기억 평가와 3차원의 가상현실 기반의 공간인지검사를 사용하여 대학생 48명(남성 24명, 여성 24명)을 대상으로 성별에 따른 일화기억과 공간인지의 차이를 알아보았다. 모든 참가자는 사진을 사용한 시각적 일화기억 평가를 시행하였고 이를 통해 일화기억의 하위 요소인 사물, 장소, 시간 기억에 대한 정확도(%)를 평가하였다. 또한 가상현실에서 길 찾기 과제를 10회 진행하여 가상공간에서의 거리 오차(cm) 값의 평균값을 분석하였다. 결과 : 일화기억은 하위 요소 모두 성별에 따른 유의한 차이가 나타나지 않은 반면(p>.05), 공간인지의 경우 남성이 여성보다 높은 수행을 보이는 것으로 나타났다(p<.05). 결론 : 본 연구의 결과를 통해 성별에 따른 시각적 일화기억의 차이는 언어적 일화기억의 차이와는 다르다는 것을 알 수 있었다. 한편 해마 기능이 일화기억과 공간인지를 담당한다는 것을 고려했을 때, 성별에 따른 일화기억과 공간인지의 차이에 대한 결과가 다르게 나타난 것은 두 기능이 서로 독립적이라는 것을 시사한다. Objective : The purpose of this study was to identify and compare the sex differences in episodic memory and spatial cognition in healthy young adults. Methods : Forty-eight undergraduates (male=24, female=24) were assessed for sex differences using the visual stimuli episodic memory task and the virtual reality-based spatial cognition task. The accuracy rates (%) for the What, Where, and When conditions of the episodic memory task and the average distance error (cm) for 10 trials of the spatial cognition task were analyzed. Results : There were no significant sex differences between the three conditions. The male participants showed a significantly higher performance on the spatial cognition task than the female participants Conclusion : The results of this study indicated that the sex differences in episodic memory could be altered by the test methods. Although episodic memory and spatial cognition mainly depend on the hippocampus, the sex-related differences between the two functions were inconsistent, suggesting that these two functions are independent.