• 한국정보컨버전스학회:학술대회논문집
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• 한국정보컨버전스학회 2008년도 International conference on information convergence
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• pp.75-86
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• 2008

This paper presents the design, implementation, and evaluation of the RFID Guardian, the first-ever unified platform for RFID security and privacy administration. The RFID Guardian resembles an "RFID firewall", enabling individuals to monitor and control access to their RFID tags by combining a standard-issue RFID reader with unique RFID tag emulation capabilities. Our system provides a platform for coordinated usage of RFID security mechanisms, offering fine-grained control over RFID-based auditing, key management, access control, and authentication capabilities. We have prototyped the RFID Guardian using off-the-shelf components, and our experience has shown that active mobile devices are a valuable tool for managing the security of RFID tags in a variety of applications, including protecting low-cost tags that are unable to regulate their own usage.

• 인터넷정보학회논문지
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• 제16권3호
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• pp.95-104
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• 2015

최근 스마트폰 사용자들이 급격히 증가함에 따라 다양한 사회적 문제점들이 발생되고 있다. 대표적으로, 과도한 스마트폰의 사용과 잘못된 이용습관은 '스마트폰 중독(smartphone addiction)'과 '스마트폰 질병(smartphone disease)'과 같은 새로운 사회적 문제점들을 야기시키고 있다. 본 연구에서는 이러한 문제들을 사전에 예방하기 위해 스마트폰 사용자의 패턴을 방향센서를 이용해서 수집하고 분석해서 스마트폰 중독 및 질병을 예방하는 시스템을 제안한다. 제안된 시스템은 사용자의 스마트폰 사용형태와 사용시간을 실시간으로 분석하여 위험수준에 도달하였을 경우, 사용자에게 이를 알려 줌으로써 사용자 자신이 사전에 위험을 인지할 수 있도록 하며, 자신의 의지로 스마트폰 사용을 절제하도록 하여 스마트폰 중독 및 질병을 사전에 예방할 수 있도록 제안한다.

• 한국컴퓨터정보학회논문지
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• 제29권7호
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• pp.1-9
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• 2024

본 연구에서는 부트 스톰을 완화하고 서비스 안정성 향상을 위하여 AI 기반 VDI 사용 예측 시스템, 가상머신 부팅 스케줄러 시스템으로 구성된 부트 스톰 완화 방안인 BRAIDS를 제안한다. 가상 데스크톱 인프라(Virtual Desktop Infrastructure, VDI)는 조직의 업무 생산성 향상과 IT 인프라 효율성 증대를 위한 중요한 기술이다. 다수의 가상 데스크톱이 동시 부팅될 때 발생하는 부트 스톰은 성능저하와 대기 시간 증가를 유발한다. xgboost 알고리즘을 사용하여, 기존 VDI 사용 데이터를 활용하여 향후 VDI 사용량을 예측한다. 또한 예측된 사용량을 입력으로 받아 VDI 서버와 가상머신의 하드웨어 사양을 고려하여 부트 스톰을 정의하고, 부트 스톰을 완화하기 위하여 순차적으로 가상머신을 부팅할 수 있는 스케줄을 제공한다. 사례연구를 통하여 VDI 사용 예측 모델은 높은 예측 정확도와 성능 향상을 보였으며, 가상머신 부팅 스케줄러를 통하여 가상 데스크톱 환경에서의 부트 스톰 현상을 완화하고 효율적으로 IT 인프라를 활용할 수 있음을 확인하였다.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 1996년도 추계학술대회발표논문집; 고려대학교, 서울; 26 Oct. 1996
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• pp.250-253
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• 1996

Based on a sample of corporations which have used E-mail at least three years, we found (1) no difference in the usage of E-mail depending on task analyzability, and (2) the usage of E-mail in the high analyzability group correlated more strongerly than in the low analyzability group with performance. A future study would be researched on the usage between computer-based communication media with other variables such as social influence.

• 한국정보시스템학회:학술대회논문집
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• 한국정보시스템학회 1996년도 추계학술발표회 발표논문집
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• pp.29-48
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• 1996

Previous studies on user training have largely focused on assessing models which describe the determinants of information technology usage or examined the effects of training on user satisfaction, productivity, performance, and so on. Scant research efforts have been made, however, to examine those effects of training by using theoretical models. This study presented a conceptual model to predict intention to use information technology and conducted an experiment to understand how training for computer skill acquisition affects primary variables of the model. The data were obtained from 32 student subjects of an experimental group and 31 students of a control group, and the information technology employed for this study was a university's electronic mail system. The study results revealed that attitude toward usage and perceived behavioral control helped to predict user intentions; outcome expectations were positively related to attitude toward usage; and self - efficacy and perceived behavioral control. The changes in those variables suggest more causal effects of user training than other survey studies.

• 한국정보시스템학회지:정보시스템연구
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• 제5권
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• pp.345-371
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• 1996

Previous studies on user training have largely focused on assessing models which describe the determinants of information technology usage or examined the effects of training on user satisfaction, productivity, performance, and so on. Scant research efforts have been made, however, to examine those effects of training by using theoretical models. This study presented a conceptual models to predict intention to use information technology and conducted an experiment to understand how training for computer skill acquisition affects primary variables of the model. The data were obtained from 32 student subjects of an experimental group and 31 students of a control group, and the information technology employed for this study was a university electronic mail system. The study results revealed that attitude toward usage and perceived behavioral control helped to predict user intentions ;; outcome expectations were positively related to attitude toward usage ; and self-efficacy was positively related to perceived behavioral control. The hands-on training for the experimental group led to increases in perceived ease of use, self-efficacy and perceived behavioral control. The changes in those variables suggest more causal effects of user training than other survey studies.

• International Journal of Quality Innovation
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• 제1권1호
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• pp.64-74
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• 2000

This paper investigates the issue of performance testing on web browsing environments. Among the typical non-functional characteristics, index of link validity will be deeply explored. A framework to certify link correctness in web site is proposed. All possible navigation paths are first formulated to represent a usage model with the Markov chain property, which is then used to generate test script file statistically. With collecting any existing failure information followed by tracing these testing browsed paths, certification analysis may be performed by applying Markov chain theory. The certification result will yield some significant information such as: test coverage, reliability measure, confidence interval, etc. The proposed mechanism may provide not only completed but also systemic methodologies to find any linking errors and other web technologies errors. Besides, an actual practice of the proposed approach to a web-based system will be demonstrated quantitatively through a certification tool.

• 한국산업정보학회:학술대회논문집
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• 한국산업정보학회 1996년도 추계 학술 발표회 발표논문집
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• pp.29-48
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• 1996

Previous studies on user training have largely focused on assessing models which describe the determinants of information technology usage or examined theeffects of training, on user satisfaction, productivity, performance and so on. Scant research efforts have been made, however, to examine those effects of training by using theoretical models. This study presented a conceptural model to predict intention to use information technology and conducted an experimentto understand how training for computer skill acquisition affects primary variables of the model. The data were obtained from 32 student subjects of an experimental group and 31 students of a control group, and the information technology employed for this study was a university's electronic mail system. The study results revealed that attitude toward usage and perceived behavioral control helped to predict user intentions ; outcome expectations were positively related to attitude toward usage ; and self-efficacy was positively related to perceived behavioral control. Thd hands-on training for the experimental group led to increases in perceived ease of use, self-efficacy and perceived behaviroal control. The changes in those variables suggest more causal effects of user training than other survey studies.

• 디지털융복합연구
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• 제5권1호
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• pp.117-130
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• 2007

This paper examines whether there exists discrimination of the information usage pattern between tenants of permanent and temporary public rental housing in Korea. Moreover, we focus to examine on that matters between two groups, $7{\sim}12$ pyeongs and $11{\sim}24$ pyeongs that indicate permanent and temporary public rental housing respectively. The results derived in this paper can be summarized as follows: there exists statistical significance in using computer, internet, communication and broadcasting, on the other hand, insignificance in using satellite communication and telephone between them. The implication of this results shows that as widen income gap, also widen gaps in using computer and internet between them. Thus government public rental housing policy should focus to make narrow income gap to diminish information gap between those groups.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제1권1호
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• pp.61-74
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• 1997

Currently, school computer education has turned to multimedia education, and the related policies are run by each regional authority of education. School principals and parents show strong interest on computer education and the movement into multimedia education as well. In current school education it also seems that computer use is being integrated into all subjects.