• 전력전자학회논문지
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• 제27권4호
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• pp.297-304
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• 2022

This study compares the performance of artificial intelligence (AI)-based maximum power point tracking (MPPT) methods under partial shading conditions in a photovoltaic generation system. Although many studies on AI-based MPPT have been conducted, few studies comparing the tracking performance of various AI-based global MPPT methods seem to exist in the literature. Therefore, this study compares four representative AI-based global MPPT methods including fuzzy logic control (FLC), particle swarm optimization (PSO), grey wolf optimization (GWO), and genetic algorithm (GA). Each method is theoretically analyzed in detail and compared through simulation studies with MATLAB/Simulink under the same conditions. Based on the results of performance comparison, PSO, GWO, and GA successfully tracked the global maximum power point. In particular, the tracking speed of GA was the fastest among the investigated methods under the given conditions.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2022년도 제65차 동계학술대회논문집 30권1호
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• pp.9-10
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• 2022

본 논문에서는 딥러닝을 활용하여 취업준비생들의 데이터에 의하여 취업 가능 여부와 그에 따른 유용한 정보들을 얻기 위한 시스템을 제안한다. 취업 가능성이 성공적으로 평가된다면 예비 사회인, 취업준비생, 대학생들이 미리 취업 준비가 어느 정도 이루어졌는지 본인의 위치를 평가할 수 있으며 강점과 약점을 파악할 수 있을 것이다. 본 연구를 위해 취업생 및 취업준비생 데이터를 포함하는 CSV파일을 생성하였고, 딥러닝을 활용하여 유용한 정보들을 추출해내는데 성공했다. 이를 통해 취업 가능성 예측 프로그램은 취업준비생들과 기업의 인사관리자들에게 커다란 이점을 제공할 수 있을 것으로 보인다. 더 나아가 이 프로그램은 기업 구성원들의 업무능력을 평가할 수 있는 프로그램으로도 활용할 수 있을 것으로 사료된다.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2024년도 제69차 동계학술대회논문집 32권1호
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• pp.455-456
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• 2024

현재 폐교된 학교의 데이터들과 후에 폐교될 위험이 있는 학교들의 데이터를 활용하여, 민간, 국가기관 모두에 유용한 데이터를 제공할 수 있는 시스템을 구축하였다. 사용한 데이터로는 22년도 출산율, 14년도 출산율, 지역별 폐교 이용 현황, 전체 폐교 데이터, 현재 학교 인원 현황에 관한 자료를 활용했다. 이같은 데이터를 통해 현재 운영되고 있는 학교 중 폐교 위험의 범주 안에 들어가 있는 학교를 가중치 전략으로 추출할 수 있게 만들었다. 시스템 예측 결과, 현재까지 폐교된 학교들보다 더 많은 학교들이 폐교위기에 처해있고, 더 많은 학교들이 폐교될 것으로 예상된다. 급감하는 출산률을 보아 폐교되는 추세를 줄일 수 없다. 따라서 정부 차원에서 폐교 대부와 경매, 폐교활용 조건을 완화시키고, 학교 건물들을 대책없이 방치시키는 일을 미리 대비해야 한다고 사료된다.

• 수완나부미
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• 제10권2호
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• pp.157-180
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• 2018

Area studies, including Asian and Southeast Asian studies, in the post-Cold War era have been facing an epochal challenge that is rooted in two conditions: on the one hand, the end of the Cold War and the fading geopolitical rationale, and on the other, the emergence of the technology-driven transformation of the global economy and society. The consequences thus far are paradoxical: 1) While the technology-led transformation needs a workforce with critical and innovative abilities, higher education becomes more hyper-utilitarian; 2) While the transformation instigates increasing diversity of identities in global cultures, many countries thrive for STEM education at the expense of learning languages and cultures, including area studies which are essential for diversity. Southeast Asian studies programs need to change in response to these new conditions. These changing conditions and paradoxes, nevertheless, take different forms and degrees in the American, European and Asian academies, thanks to their different histories of higher education. The prospects for Southeast Asian Studies in these various academies are likely to be different too.

• 대한가정학회지
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• 제42권2호
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• pp.47-68
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• 2004

Human Ecology researches studying human life patterns in Korea are on the same tracts of recent global promotion in Korea as that of other academic studies. In this changing academic atmosphere, Human Ecology-based researches are in demands of suitable research topics and methods. This study was done to investigate the present research situations of Human Ecology-based subdivisional fields, including food and nutrition, clothing and textiles, child studies, family studies, home management, housing studies, consumer sciences and home economics education, by an increasing need in the society of KHEA (Korean Home Economics Association). The study focused on understanding the trends of research topics and methods shown in the papers published in major academic periodicals in Korea as well as world-class (SCI, SSCI) journals in order to predict the future for Ecology-based studies in Korea. The data were collected from all periodicals from January, 2000 to August, 2003, listed in the Korean Research Foundation and from world-class journals comparable to the former. Twenty-six periodicals were chosen for analysis, including papers with authors of ecology-based, field faculty at colleges or universities. There were some differences between the Korean and world-class research topics and methods. In order to narrow the gap between the two, we suggested that serious consideration be given to the research's application-ability toward human beings, which would be the home-ecology study's identity. The same criteria in these fields as used in other natural science fields are not suitable for supporting and evaluating research proposals and outputs, and recent global academic promotions may not be desirable in some respects. However, they do present an opportunity to expose Korean researcher's to world-class scientific societies and upgrade their studies. These efforts should stimulate the field of Human-Ecology studies and enhance the recognitions of these fields among future students.

• International Journal of Contents
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• 제15권1호
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• pp.58-63
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• 2019

The objective of this study was to explore a specific method and strategy for 'Global Leadership Program Model' in order to enhance global leadership, which will emphasize the aspect of open mind and attitude toward diversity, cross-culture, communication, and global manner. This research explored the concept and characteristics of global leadership and competency based education, and analyzed effectiveness of satisfaction and participation on global leadership programs implemented in K University and analyzed the learners' recognition on the experience. Also, the research integrated the values of global leadership with the strategies of competency-based education, and finally developed 'Global Leadership Program Model'. As a result, 'Global Leadership Program Model' might be able to help students use knowledge and skill in various contexts, and serve in the community with responsibility. It is expected that students could be facilitated to perform task and role communicating with others, and they might know exactly what learning outcome they are required to establish and what standard is used to evaluate the performance, so that this environment might motivate them and encourage them to follow the learning process more effectively.

• Bulletin of the Korean Chemical Society
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• 제35권11호
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• pp.3369-3372
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• 2014

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.14-17
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• 2005

Global latent heat flux data sets are crucial for many studies such as those related to air-sea interaction and climate variation. Currently, various global latent heat flux data sets are constructed using satellite data. Japanese Ocean Flux data sets with Use of Remote sensing Observations (J-OFURO) includes one of the satellite-derived global latent heat flux data (Kubota et aI., 2000). In this study, we review future development of J-OFURO global latent heat flux data set. In particular, we investigate usage of multi-satellite data for estimating accurate global latent heat flux. Accurate estimation of surface wind speeds over the global ocean is one of key factors for the improved estimation of global latent heat flux. First, we demonstrate improvement of daily wind speed estimation using multi-satellites data from microwave radiometers and scatterometers such as DMSP/SSMI, ERS/AMI, QuikSCAT/SeaWinds, AqualAMSR-E, ADEOS2/AMSR etc. Next, we demonstrate improvement of global latent heat flux estimation using the wind speed data derived from multi-satellite data.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제16권1호
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• pp.52-58
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• 2016

This paper categorized Korean small and medium businesses' global capabilities based on the preceding studies about the global capabilities and then, examined how their global capabilities would affect their competitive advantages and business management performances. As a result of testing the research model, it was found that the small and medium businesses' global capabilities had some significant effects on their competitive advantage (p<.001). On the other hand, the global capabilities had some positive effects on the business management performances and the mediating effects were significant (p>.05), which means that the competitive advantage has some mediating effects on the correlation between the global capabilities and the business management performances. Accordingly it was possible to analyze the correlation between global capabilities of small and medium businesses and their competitive advantage and thereby, provide for an opportunity to shift the paradigm of the global competition strategies.

• Journal of Information Display
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• 제10권4호
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• pp.188-194
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• 2009

Conventional stereoscopic (3D) displays using binocular parallax generate unnatural conflicts between convergence and accommodation. These conflicts can affect the observer's ability to fuse binocular images and may cause visual fatigue. In this study, time series changes in visual fatigue and depth sensation when viewing stereoscopic images with changing parallax were examined. In particular, the physiological changes, including the subjective symptoms of visual fatigue, when viewing five parallax conditions, were examined. Then a comparative analysis of the 2D and 3D conditions was performed based on the visual function. To obtain data regarding the visual function, the time series changes in the spontaneous-blinking rate before and during the viewing of 3D images were measured. The time series change results suggest that 2D and 3D images cause significantly different types of visual fatigue over the range of binocular disparity.