• Nuclear Engineering and Technology
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• v.54 no.6
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• pp.2062-2066
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• 2022

Nuclear energy sources are indispensable in cost effectively achieving carbon neutral economy, where public opinion is critical to adoption as the consequences of nuclear accident can be catastrophic. In this context, discussion on spent nuclear fuel is a prerequisite to expanding nuclear energy, as it leads to the issue of radioactive waste disposal. Given the dearth of study on spent nuclear fuel public acceptance, we use text mining and big data analysis on the news article and public comments data on Naver news portal to identify the Korean public opinion on spent nuclear fuel. We identify that the Korean public is more interested in the nuclear energy policy than spent nuclear fuel itself and that the alternative energy sources affect the position towards spent nuclear fuel. We recommend relating spent nuclear fuel issue with nuclear energy policy and environmental issues of alternative energy sources to further promote spent nuclear fuel.

• ETRI Journal
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• v.45 no.2
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• pp.226-239
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• 2023

Challenges in cognitive radio and tactical communications include recognizing anonymously received signals and estimating parameters in a blind or semi-blind manner. In this paper, we examine this issue for orthogonal frequency division multiplexing (OFDM) signaling. There are several parameters in OFDM signaling, and the blind receiver must extract and consider the synchronization issue. We assume that the blind receiver is aware of modulation type, OFDM, and not aware of chip duration and the length of cyclic prefix. First, we present new criteria based on kurtosis to estimate these parameters and compare their performance at different levels of additive white Gaussian noise with methods based on correlation, kurtosis, maximum likelihood, and matched filter. Then, we perform synchronization and estimate the start time based on these criteria and several new criteria in two steps: fine and coarse synchronization. Finally, in a more practical setup, we present the idea of jointly estimating the mentioned parameters and the signal start time as coarse synchronization. We compare different criteria and show that one of the proposed criteria has the highest efficiency.

• Journal of applied mathematics & informatics
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• v.42 no.3
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• pp.647-661
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• 2024

This study aims to determine the optimal solution to transportation problems. We proposed a novel approach for tackling the initial basic feasible solution. This is a critical step toward achieving an optimal or near-optimal solution. The transportation issue is an issue of distributing goods from several sources to several destinations. The literature demonstrates many ways to improve IBFS. In this work, to solve the IBFS, we suggested a new method based on the statistical formula called cumulative distribution function (CDF) in exponential distribution, and inverse contra-harmonic mean (ICHM). The spreadsheet converts transportation cost values into exponential cost cell values. The stepping-stone method is used to identify an optimum solution. The results are compared with other existing methodologies, the suggested method incorporates balanced, and unbalanced, maximizing the profits, random values, and case studies which produce more effective outcomes.

• 제어로봇시스템학회:학술대회논문집
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• 2000.10a
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• pp.528-528
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• 2000

A new paradigm of technology, based on an interaction o( machines, humans and the environment through korperlichkeit(corporeality or philosophy of Mom), is explored. The issue of interactivity in contemporary art plays a key role in the investigation of interactive technology. An interactive system is proposed and implemented to explore the Proposed interactive technology Paradigm. Also, recent collaborations by ASTA(Arts, Sciences St Technology in Asia), an interdisciplinary project team of artists and engineers, are introduced to demonstrate these explorations.

• Industrial Engineering and Management Systems
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• v.11 no.2
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• pp.133-133
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• 2012

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.24 no.1
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• pp.24-35
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• 2010

• Fashion Information and Technology
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• v.9
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• pp.73-83
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• 2012

• Journal of Communications and Networks
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• v.5 no.2
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• pp.93-95
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• 2003

• Bulletin of Food Technology
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• v.8 no.2
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• pp.110-114
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• 1995

본고는 미국 농무성(USDA., United States Department of Agriculture) 1994년 발행 "Food Review"지 (Vol.17, Issue 2)에 게재된 식품의 안전성에 관한 기사를 중심으로 우리나라의 생산자나 소비자도 관심이 높은 우유와 biotecnology에 관한 기사를 요약한 것이다.

• Industrial Engineering and Management Systems
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• v.13 no.2
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• pp.117-117
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• 2014