• International Area Studies Review
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• v.12 no.2
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• pp.79-97
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• 2008

After entering into the WTO in October, 2001, China started opening her bank industry on a full scale and her financial markets from the end of 2006. It is true that the Chinese commercial banks should make efforts to enhance their operational efficiency for adapting the rapid change of financial environments. In this paper, the efficiency of 4 Chinese state-owned commercial banks and 11 share holding commercial banks has been estimated. Our Tobit model to find out the determinants of these banks' efficiency. The results are as follows: The efficiency of these banks kept being improved from 1999 to 2003. With regard to the relationship between the determinants and the bank efficiency, their capital ratios, ownership structures and government subsidies are significant at the 5% level while the return on asset(ROA) is significant at the 10% level. The relationship between the determinants and the efficiency has showed that the size, capital ratios, ROA and ownership structure showed significantly before the entry to WTO, on the other hand, after WTO their capital ratios are the only factor to determine their efficiencies.

• Journal of the Korea Society of Computer and Information
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• v.27 no.2
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• pp.115-124
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• 2022

In this paper, we present an NFT auction service for the next generation, named NextAuction, which can reliably trade ownership of individual content using DID technology. Recently, as the types and sizes of tradable digital assets have expanded, the number of NFT transactions has also increased, and a significant number of marketplaces are being operated. But, the current user authentication methods of NFT marketplaces are done only through the associated blockchain wallets. It is desirable that ownership transfer through NFT transactions be transparently managed based on a more reliable identity authentication service. NextAuction increases the reliability of auction service participants by transparently and consistently providing identity authentication for users of auction services based on the DID technique using the Klaytn blockchain. In addition, in preparation for server failure that may occur during the auction of individual content, it provides users with a robust auction service using the BR2K technique that continuously provides consistent service through the replication of a target service. The NextAuction service is developed by extending BCON, a blockchain-based content management service.

• Proceedings of the Korea Information Processing Society Conference
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• 2021.11a
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• pp.341-343
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• 2021

현재 웹툰 시장이 크게 성장하고 있는 가운데, 과도한 매출 수수료 및 불공정 계약 등 부조리한 수익분배 문제가 불거지고 있다. 본 논문은 웹툰 플랫폼의 수익모델을 보완하는 NFT 기반 웹툰거래 및 수익분배 시스템을 소개하고자 한다. NFT 는 고유한 값을 가진 토큰으로, 디지털 자산에 대한 소유권 인증에 용이하며 블록체인 네트워크 상에서 구매 이력 등의 데이터 위변조가 어렵다는 특징이 있다. 또한 암호화폐처럼 손쉽게 거래할 수 있고 재판매가 가능하다는 장점 때문에 예술 분야에서 각광받고 있다. 이에 웹툰에 NFT 를 발행하여 웹툰을 소장 및 거래하고, NFT 소장 비율에 따라 해당 웹툰의 열람 수익을 나눠 가질 수 있는 시스템을 개발하여 제안한다.

• KIPS Transactions on Computer and Communication Systems
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• v.11 no.11
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• pp.403-410
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• 2022

Non-Fungible Tokens (NFTs) created on the basis of blockchain have their own unique value, so they cannot be forged or exchanged with other tokens or coins. Using these characteristics, NFTs can be issued to digital assets such as images, videos, artworks, game characters, and items to claim ownership of digital assets among many users and objects in cyberspace, as well as proving the original. However, interest in NFTs exploded from the beginning of 2020, causing a lot of load on the blockchain network, and as a result, users are experiencing problems such as delays in computational processing or very large fees in the mining process. Additionally, all actions of users are stored in the blockchain, and digital assets are stored in a blockchain-based distributed file storage system, which may unnecessarily expose the personal information of users who do not want to identify themselves on the Internet. In this paper, we propose an NFT platform using cloud computing, access gate, conversion table, and cloud ID to improve usability and privacy problems that occur in existing system. For performance comparison between local and cloud systems, we measured the gas used for smart contract deployment and NFT-issued transaction. As a result, even though the cloud system used the same experimental environment and parameters, it saved about 3.75% of gas for smart contract deployment and about 4.6% for NFT-generated transaction, confirming that the cloud system can handle computations more efficiently than the local system.

• Journal of the Economic Geographical Society of Korea
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• v.19 no.2
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• pp.378-398
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• 2016

This paper aims to clarify the process of institutionalization of customary land ownership along with the expansion of coffee plantation in Dak Lak Province, Vietnam. Vietnam is the second-largest coffee exporter in the world. Most of the coffee areas are concentrated in Dak Lak-a province of commercial agricultural production. The expansion of coffee plantation in Dak Lak have brought a severe competition of land resources, and resulted in the transition of land ownership scheme from customary commons by ethnic minorities to those of exculsive private assets which is secured by the state. Institutionalization of customary land ownership in Dak Lak, however, was differently happened according to the geography from the center of state power as well as the value of land resources. In this paper, the authors argue that institutionalization of customary land ownership in Dak Lak was a result of compromising between statemaking process in the frontiers and "everyday resistance" of ethnic minorities, comparing 3 geographically different ethnic minorities' communities.

• Trans-
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• v.14
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• pp.1-33
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• 2023

In the Web 3.0 era, the third generation of web technologies that uses blockchain technology to give creators ownership of data, metaverse is a crucial trend for developing a creator economy. Web 3.0 aims for a value in which content creators are compensated from participation without being dependent on the platform. Blockchain NFT technology is crucial in metaverse, a vital component of Web 3.0, to ensure the ownership of digital assets. Based on the theory that investigates the concept and characteristics of metaverse, this study identifies five features of the metaverse based NFT art ①'Continuity', ②'Presence', ③ 'Concurrency', ④'Economy', ⑤ 'Application of technology'. By focusing on metaverse based NFT art <Hybrid Nature> case study, we analyzed how the concepts and characteristics of the metaverse and NFT art were reflected in the work. This study focuses on the concept of NFT art, which is emerging at the intersection of art, technology and industry, and emphasizes the importance of finding creative, aesthetic, and cultural values rather than the NFT art's potential for financial gain. It is still in its early stage for academic studies to focus on the aesthetic qualities of NFT art. Future academics and researchers can find this study to gain deeper understanding of the traits and artistic, creative aspects of metaverse based NFT art.

• KDI Journal of Economic Policy
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• v.19 no.1
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• pp.151-194
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• 1997

본고는 다음과 같은 문제를 제기한다. 해외직접투자와 관련한 우려 중의 하나가 수출이 잘되고 있는 부문에서 해외투자가 증가하여 국내의 수출기반을 약화시킬 수 있다는 것인데, 이를 어떻게 해석할 수 있을 것인가? 이 문제에 대한 접근을 위해 본 논문에서는 우리나라 수출입(輸出入) 및 해외직접투자(海外直接投資)의 구조변화(構造變化)에 관한 분석을 시도하고 해외직접투자의 요인(要因)을 추론하였다. 근년에 해외직접투자가 급증하면서 해외직접투자의 경제적 효과에 대한 관심이 높아지고 산업공동화를 우려하는 견해도 대두되고 있다. 특히 우리 기업의 해외진출을 진출(進出)이 아닌 탈출(脫出)로 인식하기도 한다. 고임금, 고금리, 고지가, 고물류비 등 국내의 고비용 구조가 우리 기업을 해외로 몰아내고 있다는 것이다. 본고는 해외투자에 관한 이러한 시각이 우리 기업의 해외투자가 기업고유(企業固有)의 자산(資産) 또는 경쟁우위(競爭優位)를 활용 강화하기 위해 이루어지는 측면을 간과하고 있음을 지적한다. 본고는 다음과 같은 점을 강조한다. 우선 해외투자는 경쟁우위가 증가하는 부문(본고에서는 수출비중이 커지는 부문)에서 오히려 더 자주 이루어지는 경향이 있다는 것이다. 이는 절충적 패러다임에서의 소유권우위적 요소가 해외투자의 요인 및 양상을 설명하는 데 중요함을 의미한다. 우리나라의 최대 수출업종인 조립금속 기계장비부문에서의 해외투자 증가도 이러한 맥락에서 보면 아주 당연하다고 할 수 있다. 그리고 조립금속 기계장비부문의 해외투자 내용을 살펴보면 주로 보급률이 높은 중저급 성숙기제품 중심으로 해외투자가 이루어지고 고급제품은 주로 국내에서 생산되거나 선진기술습득을 위해 선진국에서 생산되고 있는 것으로 판단된다. 결과적으로 주요수출업종(主要輸出業種)에서의 해외투자(海外投資)는 오히려 당연하고 내용면에서도 국내경제(國內經濟)의 구조고도화(構造高度化)를 저해하지는 않는 것으로 판단된다. 본고는 향후 정책이 해외직접투자가 국내산업구조(國內産業構造)의 질적(質的) 고도화(高度化)에 효과적(效果的)으로 기여하는 방향으로 마련되어야 함을 강조하고 이를 위해 국내(國內) 기술기반(技術基盤)의 강화(强化), 고급인력(高級人力) 개발(開發) 등을 제안한다. 해외직접투자의 증가가 국내 고부가 직종의 증가로 이어지고 이것이 저부가 직종의 감소를 상회하도록 해야 하고, 이러한 정책이 실패하면 국내의 고용감소는 불가피하며 고용감소를 우려하여 해외직접투자를 인위적으로 규제하는 것은 고용사정을 더욱 악화시킬 뿐임을 강조한다.

• KIPS Transactions on Software and Data Engineering
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• v.12 no.9
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• pp.419-430
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• 2023

Currently, NFTs have no dominant application except for the proof of ownership for digital content, and it also have small liquidity problem, which makes their price difficult to predict. Real estate usually has very high barriers to investment due to its high pricing. Real estate can be converted into NFTs and also divided into small value fungible tokens (FTs), and it can increase the the volume of the investor community due to more liquidity and better accessibility. In this document, we implement and design a system that allows ordinary users can invest on high priced real estate utilizing Black Litterman (BL) model-based Portfolio investment interface. To this end, we target a set of real estates pegged as collateral and issue NFT for the collateral using blockchain. We use oracle to get the current real estate information and to monitor varying real estate prices. After tokenizing real estate into NFTs, we divide the NFTs into easily accessible price FTs, thereby, we can lower prices and provide large liquidity with price volatility limited. In addition, we also implemented BL based asset portfolio interface for effective portfolio composition for investing in multiple of real estates with small investments. Using BL model, investors can fix the asset portfolio. We implemented the whole system using Solidity smart contracts on Flask web framework with public data portals as oracle interfaces.

• Knowledge Management Research
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• v.21 no.3
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• pp.45-65
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• 2020

It is desirable to invest in wine that increases its value, but wine investment itself is unfamiliar in Korea. Also, the process itself is unreasonable, and information is often forged, because pricing in the wine market is done by a small number of people. With the right solution, however, the wine market can be a desirable investment destination in that the longer one invests, the higher one can expect. Also, it is expected that the domestic wine consumption market will expand through the steady increase in domestic wine imports. This study presents the consortium block chain framework for revitalizing the wine market and enhancing transparency as the "right solution" of the nation's wine investment market. Blockchain governance can compensate for the shortcomings of the wine market because it guarantees desirable decision-making rights and accountability. Because the data stored in the block chain can be checked by consumers, it reduces the likelihood of counterfeit wine appearing and complements the process of unreasonably priced. In addition, digitization of assets resolves low cash liquidity and saves money and time throughout the supply chain through smart contracts, lowering entry barriers to wine investment. In particular, if the governance of the block chain is composed of 'chateau-distributor-investor' through consortium blockchains, it can create a desirable wine market. The production process is stored in the block chain to secure production costs, set a reasonable launch price, and efficiently operate the distribution system by storing the distribution process in the block chain, and forecast the amount of orders for futures trading. Finally, investors make rational decisions by viewing all of these data. The study presented a new perspective on alternative investment in that ownership can be treated like a share. We also look forward to the simplification of food import procedures and the formation of trust within the wine industry by presenting a framework for wine-owned sales. In future studies, we would like to expand the framework to study the areas to be applied.