• Journal of Bio-Environment Control
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• v.18 no.2
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• pp.107-111
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• 2009

This experiment was conducted to select optimum hydroponic systems for clean and mass production for shoot and root of Echinacea. E. purpurea and E. angustifolia. were grown at 5 different kinds of hydroponic systems; NFT, modified NFT, DFT, aeroponics, and Ebb & Flow for 150 days. The lowest photosynthetic rate and transpiration rate were in Ebb & Flow system in E. purpurea and E. angustifolia at 120 days after transplanting. The shoot fresh and dry weight were high in aeroponic and DFT system of E. angustifolia and in aeroponic and NFT system of E. purpurea at 150 days after transplanting. The root fresh and dry weight of both species were the highest in aeroponic system and next to modified NFT system. They were increased in NFT and Ebb & Flow system for the root length and in aeroponic system for the number of tillering. The results demonstrate that aeroponic system was the most effective for enhancement shoot and root biomass of Echinacea spp. in hydroponics.

• The Journal of the Convergence on Culture Technology
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• v.7 no.4
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• pp.667-673
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• 2021

Unauthorized generations and sales of non-funable tokens (NFTs) without the consent of the creator is one of the biggest problems that arise in NFT Marketplaces. This study proposes a method to practically reduce the problem of NFT sales without the consent of the creator by means of authentication with social media accounts. Through the proposed method, creators who are already using social media as a means of communication and marketing for creative activities can authenticate with their own accounts. Creators who have difficulty authenticating with their own accounts will be provided with alternatives to authenticate using human networks. In addition, the proposed method of protecting creator rights was designed using a flowchart to enable development using only the public API (Application Programming Interface) provided by social media. The proposed method can protect creators' rights and reduce damage caused by NFT fraud by inducing buyers to trade NFTs of authorized sellers through social media.

• Journal of the Society of Disaster Information
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• v.18 no.3
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• pp.600-608
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• 2022

Purpose: The purpose of this study is to examine the types of crimes taking place using NFT in P2E games, and to devise measures to prevent crimes and legal sanctions between the government and companies. Method: In order to classify crime types in the metaverse, crime types were analyzed based on the results of previous studies and current incidents. Results: Most of the crimes taking place through NFTs in P2E games are hacking, money laundering, and copyright issues. Although games are regulated in Korea, these are crimes that can occur if game regulations are loosened in the future. Therefore, crime types were classified into hacking, money laundering, tax evasion, copyright issues, and game speculation, and various cases of damage have already occurred in foreign countries. Conclusion: Currently, no crimes are occurring in Korea due to game regulations, but as seen in foreign cases, large amounts of hacking and money laundering using NFTs are taking place in Korea. this will have to be provided

• Proceedings of the Korea Information Processing Society Conference
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• 2022.05a
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• pp.329-332
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• 2022

본 연구에서는 하나의 2D 이미지를 StyleGAN을 통해 다각도의 이미지를 생성하고, 그것을 다시 Kaolin으로 구현한 역그래픽 렌더러의 입력으로 받아 3D 오브젝트로 변환한다. 또한, 클레이튼 기반의 블록체인을 통해 NFT 기술을 통하여 3D 오브젝트를 NFT로 만들 수 있도록 한다. 최종적으로 2D 이미지를 메타버스에서 활용할 수 있는 3D 패션 아이템으로 변환하고 NFT를 발행하여 거래한다. 본 연구는 개인이 자유롭게 메타버스 콘텐츠를 제공하고 거래하여 메타버스 활성화에 기여할 것으로 기대한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.05a
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• pp.276-277
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• 2022

기존의 특허, 저작권 등의 지적재산권은 특허청, 한국저작권위원회 등 중앙 기관에서 관리하고 있어 지적재산권을 등록하는데 많은 시간이 소요되고, 특허의 경우 특허법에 따라 같은 내용에 대한 지적재산권의 소유권에 대해 먼저 특허출원을 한 자만이 인정받을 수 있기 때문에 특허 접수 시기의 오차범위가 존재하여 정당한 발명자의 권리가 침해될 수 있다. 이를 해결하기 위해 NFT 를 기반으로 지적재산권의 소유권을 보장할 수 있는 방법에 대한 연구가 이루어졌으나, NFT 는 특성상 중복 가능하다는 문제점이 존재한다. 따라서 본 논문에서는 NFT 를 이용하여 지적재산권의 소유권을 인증하고, 블록체인 기반의 탈중앙화 DID 에 지적재산권을 저장하여 문서의 검색 및 관리를 가능하게 하는 등 지적재산권을 보호하는 기법을 제안한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.05a
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• pp.248-251
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• 2022

최근 블록체인의 발전에 따라 디지털 자산을 위한 NFT 시장과 블록체인을 클라우드 서비스로 제공하는 BaaS 시장도 함께 발전하고 있다. 이에, 본 논문에서는 기존 NFT의 문제점인 느린 성능 및 비싼 수수료와 같은 사용성 문제와 개인정보 및 프라이버시 보호 문제의 보완을 위해 BaaS를 활용한 NFT 플랫폼을 제안한다. 또한, 시스템의 개요와 각 구성요소에 대한 자세한 내용을 제시하고 향후 연구에서의 시스템 구현을 위한 방향성을 제시한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.11a
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• pp.922-924
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• 2022

본 연구에서는 2D 이미지 파일을 NFT 3D 패션 아이템으로 변환하여 거래할 수 있도록 한다. 한 장의 2D 이미지가 SMR을 통해 3D 오브젝트로 변환된다. 변환된 오브젝트는 KIP-17 기반의 스마트 컨트랙트를 통해 NFT을 발행할 수 있도록 환경을 구축하고, 최종적으로 NFT를 거래할 수 있는 플랫폼을 제공한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.05a
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• pp.318-319
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• 2023

본 연구에서는 다양한 문제들을 ELECTRA를 통해 문제의 유형을 분류하고, 그것을 기존의 문제들과 유사도 평가를 진행하여 문제의 표절 여부를 확인한다. 유일성이 입증된 문제는 이더리움 기반의 블록체인을 사용하여 NFT 기술을 통해 문제를 NFT로 발행하여 거래한다. 최종적으로 표절하지 않았음이 검증된 문제를 NFT를 통해 거래함으로써 문제의 저작권 및 권리를 웹 플랫폼을 통해 거래할 수 있도록 한다. 본 논문에서는 이러한 문제 거래 웹 플랫폼 설계를 기술하며, 본 플랫폼은 문제를 쉽게 거래할 수 있도록 지원하여 문제 거래 활성화에 기여할 것이다.

• Science of Emotion and Sensibility
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• v.20 no.4
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• pp.65-78
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• 2017

The current study examined the influence of individual trait such as Need-For-Touch level (NFT; high vs. low) and swiping orientation (vertical vs. horizontal) on product evaluation and preference when using touch-screen interface like a smart phone and a tablet. Swiping is one of the most common interaction techniques for changing pages or searching some aligned pictures on touch-screen interface and it can be used in vertical and horizontal orientations. The experiment revealed a significant interaction between swiping orientation and NFT on preference, however the interaction on change-in-price of given products was only marginally significant. To be specific, high NFT participants reported higher preference for horizontal-swipe than vertical-swipe products, but such difference did not occur with low NFT participants. The current study illustrates the influence of swiping orientation and NFT on product preference and it provides a new perspective of design principles especially for online shopping websites.

• The Journal of Information Systems
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• v.32 no.1
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• pp.53-84
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• 2023

Purpose The purpose of this study is to understand the factors that influence the purchasing behavior of NFT collectibles consumers, using the value-based acceptance model (VAM). As the use of NFTs is predicted to become more widespread in the near future, it is important to explore how these consumers make purchasing decisions. Design/methodology/approach This study employed text analysis and in-depth interviews to identify the factors of benefits and sacrifices perceived by consumers. Based on the results of the exploratory study, a research model and hypotheses were established. To test the hypotheses, an online survey was conducted, and the data was analyzed using a structural equation model. Findings The major findings of this study showed that perceived benefit factors had a significant positive impact on consumers' perceived value of NFT collectibles, whereas perceived sacrifice factors did not have a significant effect on perceived value. Also, when consumers' social needs were met, their perceived value was highest. Lastly, the effect of perceived value on purchase intention was not affected by the level of psychological ownership.