• Journal of Smart Tourism
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• 제3권2호
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• pp.23-36
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• 2023

Due to the phenomenon of aging, a new consumer segment known as the "new-silver generation" is emerging. Unlike the previous silver generation, this generation possesses significant economic power and consuming willingness, attracting attention from consumer goods companies. However, both the new-silver generation and the elderly face challenges in adopting contactless or self-service technologies such as self-order kiosks, resulting in negative reactions. Therefore, this study aims to investigate the attitude and response of the newsilver generation towards kiosks, as well as the factors influencing their resistance to such technology. By applying theoretical perspectives from the innovation resistance model, technostress theory, and the value-based model, this study identifies influencing factors for innovation resistance among the new-silver generation when using contactless technologies implemented in fast-food restaurants. The findings indicate that a lower awareness of new technologies and services corresponds to decreased adoption resistance, while a higher perceived value leads to more positive behaviors and attitudes among the new-silver generation utilizing kiosks at fast-food restaurants.

• Human Ecology Research
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• 제62권3호
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• pp.473-486
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• 2024

The purpose of this study was to conduct Latent Profile Analysis to identify the types of marriage values within each generation and explore the influence of gender, family health, and self-determination on each type. This study was conducted as an online survey through social networking sites (SNS) for the Second Generation of Baby Boomers (1965~1974), Generation X (1975~1984), Generation Y (1985~1996), and Generation Z (1997~2003). A total of 1,114 copies were used for the final analysis. Latent Profile Analysis was conducted using Mplus ver. 8.8 software to identify the types of marriage values within each generation and explore the influence of gender, family health, and self-determination on each type. The significance of this study lies in the identification of a group in each generation that holds ambivalent values about marriage. Additionally, we identified differences between gender and self-determination as variables that affect marriage values, excluding family variables. Therefore, it is significant to understand marriage values by considering generational characteristics. Based on this, it is believed that it can provide a basis for education and counseling programs related to marriage, reflecting the important variables unique to each generation.

• Current Photovoltaic Research
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• 제11권4호
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• pp.134-143
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• 2023

Efforts are being made to respond to global warming. Interest in and demand for the private sector-led RE100 campaign is also increasing. Self-built solar power generation, one of the implementation tools for RE100, is not expanding. However, it can be an economical means of implementation in the long run. In this study, we intend to analyze the impact on the optimal ratio of self-solar power generation using HOMER simulation. OPR defines the optimal solar power generation ratio and looks into what changes there are in the optimal solar power ratio when self-power consumption increases and external power purchase price changes. As a result, the optimal rate of self-solar power generation has a low impact even if self-power consumption increases. As the external power unit price increases, the optimal ratio increases, and at a power unit price of 100 KRW/kWh, OPR is 24%; at 200 KRW/kWh OPR is 31%; and at 300 KRW/kWh OPR is 34%. This shows that the electricity price replaced during the life cycle has a high impact on the economic feasibility of solar power generation. However, when the external power unit price reached a certain level, the increase in OPR decreased. This shows that it is difficult for domestic companies to achieve RE100 based on the economic feasibility of solar energy alone. Therefore, efforts are needed to supply renewable energy in the public sector.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제18권6호
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• pp.1675-1691
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• 2024

The metaverse is an emerging interactive domain that enables people to participate in an array of activities utilizing cutting-edge technologies. Generation Z perceives no substantial distinction between their virtual and actual identities, regarding the virtual world as an extension of reality. As an attempt to apply Bourdieu's theory of cultural taste and cultural capital to the area of the metaverse avatar, investigates the impact of users' cultural tastes on the avatars they create and experience in the metaverse. The research employed both focus group interviews and individual in-depth interviews with users of Generation Z. The study demonstrated that Generation Z users exhibit unrestricted engagement in the metaverse, although their behavior is significantly affected by their economic situation. One's cultural tastes, influenced by diverse interactions with their parents, greatly impact how they engage in cultural activities in the metaverse. Three categories were identified from the perception of avatars: Idealized Self-Representation Avatars, Atypical Self-Representation Avatars, and Integrated Self-Representation Avatars. Perceiving avatars as an extension of the self was associated with higher cultural capital. Participants held divergent perspectives on the metaverse, with certain individuals regarding it as a realm of imagination or a limitless arena for activities.

• Journal of Platform Technology
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• 제6권3호
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• pp.38-46
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• 2018

스마트 그리드는 전력 생산자와 소비자 간의 양방향 통신을 통해 효율적으로 전력을 생산 및 소비하기 위한 지능형 전력망이다. 신재생 에너지가 발전하면서 신재생 에너지가 스마트 그리드에서 차지하는 비율이 점점 높아지고 있다. 신재생 에너지는 발전량이 실시간으로 변하기 때문에 발전량의 예측 및 조절이 가능한 기존의 발전 방식과는 다른 문제점이 있다. 스마트 그리드에 자가 적응 프레임워크를 적용하는 것은 실시간으로 변하는 신재생 에너지의 발전량에 적응함으로써 스마트 그리드의 효율적인 운영을 가능케 할 것이다. 본 논문에서는 태양광 발전 시설이 설치된 스마트 마을을 가정하고 이에 자가 적응 프레임워크인 AiTES 를 적용 하여 자가 적응 프레임워크를 통해 스마트 그리드의 효율적인 운영이 가능함을 보였다.

• 한국멀티미디어학회논문지
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• 제6권7호
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• pp.1312-1320
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• 2003

본 논문에서는 하나의 은닉층을 가지는 다층 구조 신경망이 고려되었다. 다층 구조 신경망에서 널리 사용되는 오루 역전파 학습 방법은 초기 가중치와 불충분한 은닉층 노드 수로 인하여 지역 최소화에 빠질 가능성이 있다. 따라서 본 논문에서는 퍼지 단층 퍼셉트론에 ART1을 결합한 방법으로, 은닉층의 노드를 자가 생성(self-generation)하는 퍼지 지도 학습 알고리즘을 제안한다. 입력층에서 은닉층으로 노드를 생성시키는 방식은 ART1을 수정하여 사용하였고, 가중치 조정은 특정 패턴에 대한 저장 패턴을 수정하도록 하는 winner-take-all 방식을 적용하였다. 제안된 학습 방법의 성능을 평가하기 위하여 학생증 영상을 대상으로 실험한 결과. 기존의 오류 역전파 알고즘보다 연결 가중치들이 지역 최소화에 위치할 가능성이 줄었고 학습 속도 및 정체 현상이 개선되었다.

• 정보보호학회논문지
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• 제13권4호
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• pp.71-84
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• 2003

자체 인증 공개키는 공개키 생성시 사용자와 신뢰기관이 함께 참여하기 때문에 다른 사용자가 검증하는 데에 있어서 별도의 인증서를 필요로 하지 않는다. 이에 공개키를 서명 등의 어플리케이션에 사용하여 서명이 제대로 검증되지 않은 경우 서명 과정에 문제가 있는지 사용자의 공개키에 문제가 있는지 확인할 수 있는 검증 가능한 자체 인증 공개키가 제안되었으며, 이러한 공개키의 검증 과정에는 사용자가 신뢰하는 키 발급 기관(KGC : Key Generation Center)의 공개키가 사용된다. 공개키 검증시 사용자들이 동일한 키 발급 기관을 신뢰하는 경우에는 간단하게 상대방의 공개키를 검증할 수 있지만, 상이한 도메인 내의 사용자간에는 키 발급 기관간 신뢰 관계가 구축되어야만 상대방의 공개키를 검증할 수 있게 된다. 본 논문에서는 상호 신뢰 관계가 구축된 두 키 발급 기관하의 사용자간 인증서의 사용 없이 상대방 공개키의 정당성을 검증할 수 있는 자체 인증 공개키를 제안한다. 또한, 서로 다른 공개키 파라미터를 사용하는 키 발급 기관 하의 사용자간 서명 생성ㆍ검증과 키 분배를 수행하는 과정에 대하여 알아본다.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2008년도 춘계학술대회 논문집
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• pp.57-60
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• 2008

KEPRI has studied planar type SOFC stacks using anode-supported single cells and kW class co-generation systems for residential power generation. A 1kW class SOFC system consisted of a hot box part, a cold BOP part and a water reservoir. A hot box part contains a SOFC stack made up of 48 single cells and ferritic stainless steel interconnectors, a fuel reformer, a catalytic combustor and heat exchangers. Thermal management and insulation system were especially designed for self-sustainable operation. A cold BOP part was composed of blowers, pumps, a water trap and system control units. When a 1kW class SOFC system was operated at $750^{\circ}C$ with hydrogen after pre-treatment process, the stack power was 1.2kW at 30 A and 1.6kW at 50A. Turning off an electric furnace, the SOFC system was operated using hydrogen and city gas without any external heat source. Under self-sustainable operation conditions, the stack power was about 1.3kW with hydrogen and 1.2kW with city gas respectively. The system also recuperated heat of about 1.1kW by making hot water.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2008년도 추계학술대회 논문집 Vol.21
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• pp.427-428
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• 2008

We have studied design and application about an self generation equipment for underground power transmission cable. The split CT(Current Transformer), which has the applicable underground power transmission cable, was manufactured through electromagnetic simulation of magnetic core. And manufactured the AC-DC converter that supplied stable DC power for PLC modem when current of power line has more than 150A. An self generation equipment using the CT and AC-DC converter get into operation the PLC modem consistently. As a result, the underground power transmission cable was showed the application possibility through the stable communication and network characteristics.

• 한국통신학회논문지
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• 제30권2C호
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• pp.31-40
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• 2005

오류 역전파 알고리즘의 문제점과 ART 신경회로망의 문제점을 개선하기 위해 Jacobs가 제안한 delta-bar-delta 방법과 신경회로망을 결합한 자가 생성 지도 학습 알고리듬을 제안한다. 입력층과 은닉층에서는 ART-1과 ART-2 알고리듬을 이용하고, winner-take-all 방식은 완전 연결 구조이나 연결된 가중치만을 조정하도록 채택하였다. 실험을 위해 학생증, 주민등록증, 컨테이너의 영상으로 추출한 패턴을 신경회로망의 은닉층 노드에 대해 실험하였고, 실험결과 제안된 자기 생성 지도 학습알고리듬이 지역최소화, 학습 속도, 정체 현상이 기존의 방법보다 성능이 개선된 것을 확인하였다.