• Proceedings of the Korean Information Science Society Conference
• /
• 2003.04a
• /
• pp.656-658
• /
• 2003

무선 인터넷 망의 구축과 휴대용 정보기기의 일반 보급으로 이동형 정보 환경이 최근 급속히 확산되고 있다. 본 논문은 이동형 환경에서의 거래 안정성과 데이터 가용성 증대를 위한 새로운 복제 데이터 관리 기법을 제안한다. 제안된 위임 정족수 합의(Proxy Quorum Consensus) 모델은 불안정한 상태의 다수의 모바일 사이트에 직접적인 투표를 하지 않는 대신에, 미리 선출한 대표 정족 집단에 위임함으로써, 안정된 위임 투표(Proxy Voting)를 진행하는 제어 기법이다. 이 기법을 통하여 통신 비용 절감 및 응답 속도 향상 등의 효과를 기대할 수 있다.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.15 no.10
• /
• pp.3513-3533
• /
• 2021

This paper identifies challenging factors that hinder the successful settlement of the MyData industry, which is drawing global attention, and it analyzes the priority of solutions. To this end, a mixed-methodology including analytic network process technique was borrowed step-by-step to identify variables, analyze them, and provide interpretations. From the first step, the study found that the market aspect was the most important for the success of the K-MyData business, and the release of interesting representative services was found to be the easiest way to inspire market growth. From the second step, as a socio-cultural issue, the lack of consensus on data provisioning was found to present a major obstacle. To achieve consensus, it is very important for business participants to gain the trust of consumers. From the third step, it was found that the scope of data collection and responsibility for accidents needs to be clarified. Government and business-related persons must observe the principles of MyData while tackling these obstacles. It is also necessary for the government to be sensitive to changes in the environment as a focal actor. Doing so will lead to data industry activation and will help guarantee of rights of data subjects in a balanced manner. Finally, it is notable that technical barriers now have the lowest priority. Although technology is important, MyData business must also overcome market, socio-cultural, and institutional challenges. The study selected Korea as its research target, but it is expected to provide useful insights to other countries that are planning MyData business similar to Korea.

• Journal of the Korean Society for information Management
• /
• v.38 no.3
• /
• pp.1-22
• /
• 2021

An online experiment was conducted to test the subject-knowledge view of relevance theory in order to find evidence of a conceptual basis for relevance. Six experts in Library and Information Science (LIS), nine Master's students of LIS, and twelve non-experts judged the relevance of 14 abstracts within and outside of the LIS domain. Consistency among the judges was calculated by joint-probability agreement (PA) and interclass correlation coefficients (ICC). When using PA to analyze the judgements, non-experts had a higher consensus regardless of the task or division of groups. However, ICC calculations found Master's candidates had a higher level of consensus than non-experts within LIS, although the experts did not; and the agreement rates on the non-LIS task for all groups were only poor to moderate. It was only when the groups were analyzed as two groups (experts including Master's candidates and non-experts) that the expected trend of higher consistency among experts in the LIS task was seen.

• Journal of the Institute of Convergence Signal Processing
• /
• v.20 no.4
• /
• pp.218-225
• /
• 2019

Since the publication of Satoshi Nakamoto's white paper on Bitcoin in 2008, blockchain is in the spotlight as one of the core technologies of the Fouth Industrial Revolution, which can be used in various industries beyond simple cryptocurrency. various researches and developments are being conducted worldwide to utilize blockchain technology, and a global blockchain consortium is formed. In addition, attempts are being made to apply to various industries such as logistics, distribution, and medical care as well as the financial sector. However, blockchain tecnology developments still do not reach the level that meets these concerns and expectations. In this paper, we presents a comprehensive overview of blockchain technology by giving its brief concepts, consensus algorithms, standardization, and security threats.

• The KIPS Transactions:PartD
• /
• v.13D no.2 s.105
• /
• pp.199-206
• /
• 2006

Sequential pattern mining is an important data mining task with broad applications. However, conventional methods may meet inherent difficulties in mining databases with long sequences and noise. They may generate a huge number of short and trivial patterns but fail to find interesting patterns shared by many sequences. In this paper, to overcome these problems, we propose the theme of approximate sequential pattern mining roughly defined as identifying patterns approximately shared by many sequences. The proposed method works in two steps: one is to cluster target sequences by their similarities and the other is to find consensus patterns that ire similar to the sequences in each cluster directly through multiple alignment. For this purpose, a novel structure called weighted sequence is presented to compress the alignment result, and the longest consensus pattern that represents each cluster is generated from its weighted sequence. Finally, the effectiveness of the proposed method is verified by a set of experiments.

• Journal of Information Science Theory and Practice
• /
• v.11 no.4
• /
• pp.51-81
• /
• 2023

This study aimed to study its required performance requirements and proposes a competency framework necessary for the digital workforce of the Provincial Offices in Thailand. The specific primary informants were determined as 17 people. The collecting process was performed using the Delphi technique and the electronic Delphi technique in two phases, totaling four rounds. In the first time, a structured interview was used to conduct online interviews for 15 people. Content validation was performed to determine issues of the competency framework essential for the digital workforce with 7-level scaled questionnaires, and then online reviews were collected between 10-15 people (2nd to 4th times). A consensus was found and confirmed four times with descriptive statistics, namely frequency, mean, standard deviation, mode, median, and the absolute value of the difference between mode and median, interquartile range, and application of the conceptual framework. The research findings revealed that the essential competency requirements for the digital workforce were covered in digital literacy (six aspects), digital skills (four aspects), and digital characteristics (four aspects). Consensus was confirmed for 84 issues. Therefore, it was concluded that 61 points for building an essential competency framework for the digital workforce made them effective in using digital technology as a labor-saving instrument, as well as for expanding the breadth of development of digital expertise to include members of the organization's digital practitioner network. This development will benefit government agencies and the private sector, both national and international, in the future.

• Journal of Korean Library and Information Science Society
• /
• v.8
• /
• pp.1-29
• /
• 1981

Educational changes of library and information science (L & IS) at Keio university in Japan, standard of L & IS established by Japanese university educational committee, and trend of library science education in three Korean university were comparatively studied. For the efficient conduct of investigation, the art of states of L & IS was also considered. By the influence of American education, public library-oriented Japanese curriculum had changed to special library-oriented curriculum. Late 60's information science was introduced to their curriculum, library science which based upon information science theory endeavor to make its own field in a n.0, pplied science as harmonized library and information science now. Korean library science education begun with university library-oriented curriculum, accepted special library and information science at almost same time in late 60's. It gave rise to many problems to organized systematic library science. Consequently, it have needed to harmonize these two fields in near future, reorganize curriculum based on this harmonized knowledge and acquire the consensus about fundamental essence of library science education further.

• Korean Institute of Interior Design Journal
• /
• v.25 no.4
• /
• pp.125-134
• /
• 2016

This study intends to identify the spatial characteristics by carrying out the case studies of supportive housing examples of the Top Ten Projects awarded by the AIA Committee on Environments. Information of 7 awarded works was collected and content analysis was made according to design concepts and spatial compositions. As a result, the major design concepts applied to the examples were categorized into 5 points of regeneration of community, accessibility to the community, enhancement of spatial capability, participation and consensus of stakeholders and resident support services. Many supportive houses were built as a project to regenerate the deprived area and to reactivate the community through supplying supportive houses. In addition, supportive houses were developed by independent house type and shared house type and diverse scopes and sizes of community spaces were provided by including residents' exclusive community spaces that provide diverse services to vulnerable residents in addition to individual residential spaces and the community spaces that promote the consensus of residents and community people. The results of this study are expected to be used as basic material that provides the direction of desirable spatial design for introducing supportive housings in Korea.

• Proceedings of the Korean Institute of Intelligent Systems Conference
• /
• 1993.06a
• /
• pp.1001-1004
• /
• 1993

The Multisensor Fusion Problem (MFP) deals with the methodologies involved in effectively combining together homogeneous or non-homegeneous information obtained from multiple redundant or disparate sensors in order to perform a task more accurately, efficiently, and reliably. The inherent uncertainties in the sensory information are represented using Fuzzy Numbers, -numbers, and the Uncertainty-Reductive Fusion Technique (URFT) is introduced to combine the multiple sensory information into one consensus -number. The MFP is formulated from the Information Theory perspective where sensors are viewed as information sources with a fixed output alphabet and systems are modeled as a network of information processing and processing and propagating channels. The performance of the URFT is compared with other fusion techniques in solving the 3-Sensor Problem.

• Culinary science and hospitality research
• /
• v.22 no.8
• /
• pp.39-52
• /
• 2016

Present study was performed to identify the effects of SNS WOM characteristics on attitude and purchase intention as perceived in restaurant participants and to confirm the moderating effect according to SNS receivers' characteristics on formulated model. Survey method was employed to consumers who are using SNS to find restaurant foods through convenience sampling method in Seoul area. A total of 250 surveys were distributed and 230 were used for analysis, after excluding missing and unusual data. The results from this study are as follows. First, vividness of SNS WOM characteristics had a greater effect on attitude of restaurant food than timeliness, but the consensus and neutrality of SNS WOM characteristics have no significant effect on attitude of restaurant food. Second, SNS receivers characteristics found to moderate the relationships between vividness and timeliness of SNS WOM characteristics and attitude. However, SNS receivers characteristics did not have a moderating role relationships between consensus and neutrality of SNS WOM characteristics and attitude. Third, attitude of restaurant food had a significant effect on purchase intention.