• International Journal of Internet, Broadcasting and Communication
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• 제13권2호
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• pp.60-66
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• 2021

Blockchain is a technology that enables trust-based consensus and verification based on a decentralized network. Distributed ID (DID) is based on a decentralized structure, and users have the right to manage their own ID. Recently, interest in self-sovereign identity authentication is increasing. In this paper, as a method for transparent and safe sovereignty management of data, among data pseudonymization techniques for blockchain use, various methods for data encryption processing are examined. The public key technique (homomorphic encryption) has high flexibility and security because different algorithms are applied to the entire sentence for encryption and decryption. As a result, the computational efficiency decreases. The hash function method (MD5) can maintain flexibility and is higher than the security-related two-way encryption method, but there is a threat of collision. Zero-knowledge proof is based on public key encryption based on a mutual proof method, and complex formulas are applied to processes such as personal identification, key distribution, and digital signature. It requires consensus and verification process, so the operation efficiency is lowered to the level of O (log_eN) ~ O(N²). In this paper, data encryption processing for blockchain DID, based on zero-knowledge proof, was proposed and a one-way encryption method considering data use range and frequency of use was proposed. Based on the content presented in the thesis, it is possible to process corrected zero-knowledge proof and to process data efficiently.

• Journal of Information Science Theory and Practice
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• 제11권3호
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• pp.1-15
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• 2023

The present study examines the impact of value co-creation on satisfaction and intention to adopt of e-resources among users. Four components of the DART model have been adopted to describe value co-creation. These components are dialogue, access, risk-assessment, and transparency. Ph.D. scholars and faculty members from National Capital Region, India, were requested to respond on a five-point Likert scale. A total of 220 responses were collected with the help of a structured questionnaire from respondents of the top 50 business schools according to National Institute Ranking Framework. These responses have been analysed by means of structured equation modelling on Adanco 2.2 software. Findings of the study reported the insignificant impact of access and risk-assessment, and positive impact of dialogue and transparency on satisfaction. Further, satisfaction has been identified, creating significant impact on adoption of e-resources. Such findings reflect the real picture of customer experience with respect to their role in co-creation of e-resources. Respondents have conveyed their dissatisfaction with the co-creation process of e-resources, as companies do not provide all the information and access to their customers beforehand. Consequently, customers fail to make informed decisions and also find themselves unable to show trust in the service providers of e-resources.

• International Journal of Computer Science & Network Security
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• 제23권10호
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• pp.21-29
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• 2023

Recently there has been an increase in interest and competition in sharing economy platforms. The success stories of many companies have spread in this field, such as Uber, but on the other hand, there are many other companies that have failed. We studied and analyzed the factors that affect the user's participation in the sharing economy platforms as an essential part of this system, and how to maintain the consumer's intention of use without compromising consumer satisfaction, as it has become an issue of great importance on the path to the success of the sharing platforms. Relying on the expanded valence framework and expectation confirmation theory as a basis, we constructed hypotheses that influence intention to participate in participatory platforms. Results show that system quality, trust, perceived benefits, and satisfaction are important factors that positively influence intention to continue to participate. This research is expected to help researchers move forward with research related to the future and help business managers understand user insights and integrate them with their business model to help the success, development and expansion of their business in the Kingdom of Saudi Arabia.

• Asia pacific journal of information systems
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• 제24권3호
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• pp.325-344
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• 2014

Technical support of Window XP ended in March, 8, 2014, and it makes OS(Operating System) users fall in a state of confusion. Sudden decision making of OS upgrade and replacement is not a simple problem. Firms need to change the long term capacity plan in enterprise IS management, but they are pressed for time and cost to complete it. Individuals can not help selecting the second best plan, because the following OSs of Window XP are below expectations in performances, new PC sales as the opportunities of OS upgrade decrease, and the potential risk of OS technical support ending had not announced to OS users at the point of purchase. Microsoft as the OS vendors had not presented precaution or remedy for this confusion. Rather, Microsoft announced that the technical support of the other following OSs of Wndow XP such as Window 7 would ended in two years. This conflict between OS vendor and OS users could not happen in one time, but could recur in recent future. Although studies on the ways of OS user protection policy would be needed to escape from this conflict, few prior studies had conducted this issue. This study had challenge to cautiously investigate in such OS user's reactions as the confirmation with OS user's expectation in the point of purchase, three types of justice perception on the treatment of OS vendor, psychological contract violation, satisfaction and the other betrayal behavioral intention in the case of Window XP technical support ending. By adopting the justice perception on this research, and by empirically validating the impact on OS user's reactions, I could suggest the direction of establishing OS user protection policy of OS vendor. Based on the expectation-confirmation theory, the theory of justice, literatures about psychological contract violation, and studies about consumer betrayal behaviors in the perspective of Herzberg(1968)'s dual factor theory, I developed the research model and hypothesis. Expectation-confirmation theory explain that consumers had expectation on the performance of product in the point of sale, and they could satisfied with their purchase behaviors, when the expectation could have confirmed in the point of consumption. The theory of justice in social exchange argues that treatee could be willing to accept the treatment by treater when the three types of justice as distributive, procedural, and interactional justice could be established in treatment. Literatures about psychological contract violation in human behaviors explains that contracter in a side could have the implied contract (also called 'psychological contract') which the contracter in the other side would sincerely execute the contract, and that they are willing to do vengeance behaviors when their contract had unfairly been broken. When the psychological contract of consumers had been broken, consumers feel distrust with the vendors and are willing to decrease such beneficial attitude and behavior as satisfaction, loyalty and repurchase intention. At the same time, consumers feel betrayal and are willing to increase such retributive attitude and behavior as negative word-of-mouth, complain to the vendors, complain to the third parties for consumer protection. We conducted a scenario survey in order to validate our research model at March, 2013, when is the point of news released firstly and when is the point of one year before the acture Window XP technical support ending. We collected the valid data from 238 voluntary participants who are the OS users but had not yet exposed the news of Window OSs technical support ending schedule. The subject had been allocated into two groups and one of two groups had been exposed this news. The data had been analyzed by the MANOVA and PLS. MANOVA results indicate that the OSs technical support ending could significantly decrease all three types of justice perception. PLS results indicated that it could significantly increase psychological contract violation and that this increased psychological contract violation could significantly reduce the trust and increase the perceived betrayal. Then, it could significantly reduce satisfaction, loyalty, and repurchase intention, and it also could significantly increase negative word-of-month intention, complain to the vendor intention, and complain to the third party intention. All hypothesis had been significantly approved. Consequently, OS users feel that the OSs technical support ending is not natural value added service ending, but the violation of the core OS purchase contract, that it could be the posteriori prohibition of OS user's OS usage right, and that it could induce the psychological contract violation of OS users. This study would contributions to introduce the psychological contract violation of the OS users from the OSs technical support ending in IS field, to introduce three types of justice as the antecedents of psychological contract violation, and to empirically validate the impact of psychological contract violation both on the beneficial and retributive behavioral intentions of OS users. For practice, the results of this study could contribute to make more comprehensive OS user protection policy and consumer relationship management practices of OS vendor.

• 지능정보연구
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• 제17권3호
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• pp.115-130
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• 2011

온라인 스토어들은 다양한 방식으로 사용자들에게 신뢰감을 가져다 줄 수 있는 요인들을 제공하려고 한다. 대표적인 방식이 고객이 좋아할 만한 제품의 추천과 고객제품리뷰의 제공이다. 각각의 제공을 통해 신뢰의 선행요인이 되는 사회적 실재감을 향상시킬 수 있다는 연구들이 있어왔다. 따라서 본 연구에서는 추천 상황에 따른 사회적 실재감에 미치는 영향과 추천 상황과 제품군의 유형, 고객제품리뷰의 제공여부에 따라 사회적 실재감의 증가에 미치는 영향을 실험을 통해 분석하였다. 개인화 추천을 통해 사회적 실재감을 증대시킬 수 있었으며, 쾌락재에서는 고객제품리뷰의 제공을 통해 어떤 추천 상황에서든 사회적 실재감이 증대되나 유의한 차이를 보이지는 않았다.

• 경영정보학연구
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• 제12권3호
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• pp.75-88
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• 2010

스마트폰 사용자를 대상으로 하는 시장에서 오픈마켓운영에 의한 비즈니스 모델은 다음의 몇가지 중요한 요소에 의해서 결정된다. 첫째, 효과적인 기술기반 플랫폼을 개발자들에게 제공함으로써 기업영역 이외의 개발자들이 쉽게 익히고, 응용하고, 개선할 수 있는 환경을 구축하도록 한다. 둘째, 첫째 조건에 의해서 많은 재능 있는 개발자들이 특정 플랫폼의 오픈마켓에 참여하게 되면, 이들의 어플리케이션을 이용하는 고객층이 충분히 확보되고, 따라서 지속적으로 새로운 개발참여자들을 유도할 수 있는 어플리케이션 수익시장이 성장한다. 셋째, 플랫폼 제공자와 어플리케이션 제공자, 그리고 어플리케이션 제공자와 어플리케이션 사용자의 신뢰관계가 구축될 수 있는 평가시스템 및 사용자 커뮤니티 시스템이 앞 선 수익시장의 성장을 지속시키고 더욱 향상시키는 역할을 하게 된다. 본 논문은 이와 같은 오픈마켓 기반 비즈니스 모텔의 요건을 검토하고, 특히 세 번째 단계의 현상을 실증적 자료를 통해 분석하여 봄으로써 오픈마켓시스템 내에서의 사용자 혁신의 역할과 그 위임적 특성의 중요성에 대해서 검토해 보고자 한다. 특히 사용자 평가시스템 및 사용자 피드백 시스템을 제공하고 있는 스마트폰 소셜게임 커뮤니티를 중심으로 소셜게임 네트워크의 사용자 참여적 기제에 대한 역할과 유용성을 중심으로 검토할 것이다. 이와 같은 연구에 대한 효과적인 접근방법으로서 복수 내재형 사례연구방법을 이용하여 자료를 수집하고 분석하였다. 이와 같은 소셜게임 네트워크구조의 사용자 혁신 위임 모형은 오픈마켓시스템 내에서 사용자의 역할과, 그 특성에 의한 미래 ICT의 발전양상을 가늠하는 연구문제로서의 의의를 가진다.

• 한국도서관정보학회지
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• 제51권4호
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• pp.313-332
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• 2020

본 연구에서는 학술 소셜 네트워킹 서비스에서의 연구자 셀프 아카이빙 동기를 학문 분야별로 비교하였다. 대표적인 학술 소셜 네트워킹 서비스인 ResearchGate 이용자를 대상으로 선행연구에서는 온라인 설문조사 결과를 실시하여 연구자의 18가지 셀프 아카이빙 동기 요인(흥미, 개인적/직업적 이익, 평판, 학습, 자기효능감, 이타심, 호혜성, 신용, 공동체 이익, 사회 참여, 홍보, 접근성, 문화, 외부적 요인, 신뢰, 시스템 안정성, 저작권 문제, 부가적인 시간 및 노력)을 도출하였다. 후속 연구인 본 연구에서는 Biglan의 학문 분류 기준을 적용하여 연구자의 학문 분야를 구분하고, 이들 분야별 셀프 아카이빙 동기를 비교하였다. 먼저 연구자들의 학문 분야를 경성-순수, 경성-응용, 연성-순수, 연성-응용으로 구분하여 동기를 분석하였으며, 그 다음 단계에서는 경성-연성과 순수-응용으로 구분하여 비교하였다. 나아가 연구자의 인구통계학적 특성과 ResearchGate 이용 현황에 따른 동기의 차이도 살펴보았다. 연구 결과, 학문 분야에 따라 흥미, 접근성, 외부적 요인, 부가적인 시간 및 노력에 대한 동기에 차이가 있는 것으로 밝혀졌다. 예를 들어 경성-순수 분야의 이용자들은 다른 분야의 이용자들에 비해 흥미에 대한 높은 동기를 가지고 있었으며, 연성-순수 분야의 이용자들은 다른 분야 이용자들과 비교하여 개인적/직업적 이익에 대해 높은 동기를 가지고 있었다. 이러한 다양한 학문분야의 연구자들의 동기에 대해 살펴본 연구 결과는 학술 소셜 네트워킹 서비스에서의 연구 데이터와 결과물 공유 활성화를 위한 전략 개발에 도움이 될 것으로 기대한다.

• 보건의료생명과학 논문지
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• 제9권1호
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• pp.117-128
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• 2021

본 연구는 2019년 의료서비스경험조사의 자료를 활용하여, 실제 의료를 이용한 사람들의 보건의료제도에 관한 만족도, 변화 요구도를 인구사회학적 요인 및 건강상태, 의료이용 경험에 따라 분석하고, 보건의료제도 신뢰도 및 만족도, 변화 요구도에 영향을 주는 요인을 알아보고자 하였다. 연구대상자는 20세 이상의 건강보험대상자 중 최근 1년 간 외래와 입원을 이용한 의료이용 경험자 8,349명으로 하였다. 분석은 독립표본 t-test 및 ANOVA, Scheffe 검증, 다중회귀분석을 실시하였다. 연구결과 의료이용자들의 보건의료제도에 대한 인지도는 신뢰도와 만족도에 비해 상대적으로 낮은 편이었다. 고연령층, 낮은 교육수준, 읍면지역, 비용부담 의료이용제한 경험자 등의 인지도가 낮아 이들에 대한 정책과 보건의료제도 홍보가 필요하다. 보건의료제도 신뢰도는 보건의료제도 만족도에 가장 큰 영향을 미치고 있으므로, 국민들이 신뢰할 수 있는 정책수립을 해야 하고, 이 과정에서 국민의 의견수렴과 사회적 합의의 과정을 거쳐 신뢰성을 확보해 나가야 할 것이다. 의료이용자들은 보건의료제도의 변화 필요성에 공감하고 있었고, 취약지역·취약계층에 대한 지원 필요성을 가장 크게 느끼고 있었다. 의료기관 입원 및 외래 이용의 만족은 보건의료제도에 대한 신뢰와 만족에 영향을 주고, 나아가 제도 개선에 대한 국민적 합의에 긍정적 영향을 미칠 수 있음을 확인할 수 있었다.

• Asia pacific journal of information systems
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• 제17권4호
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• pp.165-186
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• 2007

With the advent of a wide variety of Internet shopping malls, consumers can choose a best appealing shopping mall from among the Bricks-and-Clicks and Pure-Player malls. Pure-Players launched their operation grandiosely with the early stage of Internet use in 1995. However, after the burst of Dot-com company bubbles in 1997, Pure-Players introduce various types of business models to meet potential needs of consumers. While Pure-Players suffer skeptical views from market analysts as well as consumers, traditional offline companies learned important lessons from Dot-com companies collapse phenomena, and expanded their business channels into online in the name of Bricks-and-Clicks. Nowadays, Bricks-and-Clicks successfully establish in the market as one of reliable business partners among consumers. Therefore, it is no surprise that recent competitions between Bricks-and Clicks and Pure-Players become fiercer than ever to attract potential customers to their websites. In this situation, consumers can choose a shopping mall to their best satisfaction. Consumers can enjoy both offline and online options for shopping because Bricks-and Clicks provide both offline and online channels to consumers, which is compared with Pure-Players offering only online channel. Offline channel is unique in providing consumers with chances to touch and feel target products and services. Meanwhile, online channel is considered very viable and convenient shopping options for consumers. In this respect, it is easily assumed that consumers will show different online shopping behavior when they have to choose either Bricks-and-Clicks mall or Pure-Player mall for the sake of shopping. Remaining research issue in this case is how much consumers' schema would influence online shopping behavior between Bricks-and-Clicks and Pure-Players. Basically, schema is a framework for synthetic information recognition that individual consumers have and is very characteristic in that it focuses not on fragmentary facts but on the combination of various causes affecting results. Consumers' schema is closely represented by trust, structural assurance, and perceived relative advantage towards a specific type of shopping mall. In literature, there exist a lot of studies comparing Bricks-and-Clicks and Pure-Players. However, there is no study to pursue the analysis of consumer behaviors comparing Bricks-and Clicks and Pure-Players from the schema perspective. Therefore, this study aims to investigate this research gap. Empirical analysis is adopted by garnering valid questionnaires from 514 Internet shopping mall users. 237 were mainly using Bricks-and-Clicks for shopping, while 277 were found to visit Pure-Players for shopping. PLS was applied to analyze the survey data to verify the proposed research hypotheses. Findings from the empirical test results are as follows. First, consumers perceive more trust and relative advantage in Pure-Players, comparing with Bricks-and-Clicks. This result is against widely-accepted perception that Bricks-and-Clicks would be perceived by consumers as more trustworthy and relatively advantageous because they have offline reputation and stores. Therefore, it becomes more obvious that Internet is becoming daily necessaries, and consumers increasingly feel very comfortable in using the Internet for their own personal purposes. Second, consumers have firm faith in transaction safety, regardless Bricks-and-Clicks and Pure-Players. This seems due to the fact that most of shopping malls showing dubious transaction safety have no place in the market. In a nutshell, empirical results tell us that Pure-Players will grow very much in the future, to the extent that consumers perceive no difference in comparison with Bricks-and-Clicks. Besides, consumers' schema accumulated through trust and perceived relative advantage plays crucial role in determining consumer behavior.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.135-135
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• 2017

The Gramene database (http://www.gramene.org) is a powerful online resource for agricultural researchers, plant breeders and educators that provides easy access to reference data, visualizations and analytical tools for conducting cross-species comparisons. Learn the benefits of using Gramene to enrich your lectures, accelerate your research goals, and respond to your organismal community needs. Gramene's genomes portal hosts browsers for 44 complete reference genomes, including crops and model organisms, each displaying functional annotations, gene-trees with orthologous and paralogous gene classification, and whole-genome alignments. SNP and structural diversity data, available for 11 species, are displayed in the context of gene annotation, protein domains and functional consequences on transcript structure (e.g., missense variant). Browsers from multiple species can be viewed simultaneously with links to community-driven organismal databases. Thus, while hosting the underlying data for comparative studies, the portal also provides unified access to diverse plant community resources, and the ability for communities to upload and display private data sets in multiple standard formats. Our BioMart data mining interface enable complex queries and bulk download of sequence, annotation, homology and variation data. Gramene's pathway portal, the Plant Reactome, hosts over 240 pathways curated in rice and inferred in 66 additional plant species by orthology projection. Users may compare pathways across species, query and visualize curated expression data from EMBL-EBI's Expression Atlas in the context of pathways, analyze genome-scale expression data, and conduct pathway enrichment analysis. Our integrated search database and modern user interface leverage these diverse annotations to facilitate finding genes through selecting auto-suggested filters with interactive views of the results.