임베디드 시스템과 전자상거래에서 함수형 패스워드방식의 사용자 인증 및 보안 방법에 대한 연구

이은서,문호영,이상호,Lee, Eun-Ser,Moon, Ho-Young,Lee, Sang-Ho 한국정보처리학회 2007 정보처리학회논문지D Vol.14 No.4

100여 년 동안 사용자 확인의 한 축을 담당해오던 비밀번호가 비대면 거래가 활성화 되면서 점차 제 기능을 다하지 못하여 이제 바뀔 때가 되었으며, 그 한 방편으로써 간접패스워드인 브레인키를 패스워드시스템에 적용하면 사용자의 패스워드의 해킹 등 다양한 유출 경로가 없으므로, 보다 안전한 전자 상거래를 활성화시킬 수 있다. 비밀번호는 현대인에게 있어서 생활필수품이므로 이에 대한 독점적 지위와 시장선점은 중요한 의미를 갖는다. 또한 비밀번호에 대한 문제는 국내에 국한 되지 않으므로 국내의 상업성은 일개 기업에 국한되지 않고 국제표준화를 선도할 수 있으므로 국가적 이익에도 부합된다. 본 연구에서는 전자상거래에서 발생하는 보안 솔루션을 제시하고자 한다. Password, a traditional user confirmation method that is used for more than 100 years, has become useless as a lot of transactions are dealt by indirect contacts. As a result, an alternative for password is required now. In this paper, we propose a novel confirmation method, which is called Brain-Key. It uses an indirect password input method. It reduces the risks due to hacking, and prevents a big credit accident because it prevents passwords to be reused. Our proposed model has general applicability so that it can be applied in domestic market as well as international markets. This research may provide solutions for the security problems in the electronic commerce.

인공창의성과 신뢰성이 소비자의 브랜드 태도 및 구매의도에 미치는 영향

이은서,황경화,권오병 대한산업공학회 2023 대한산업공학회 춘계학술대회논문집 Vol.2023 No.5

발도르프 학교의 연극 수업 연구 : 12학년의 사례를 중심으로

이은서 한국교육연극학회 2016 교육연극학 Vol.8 No.2

일정관리를 위한 Opportunity Tree 및 알고리즘 설계

이은서,이상호,Lee, Eun-Se,Lee, Sang-Ho 한국정보처리학회 2005 정보처리학회논문지D Vol.12 No.7

소프트웨어 개발 시, 일정과 품질에 저해 요인이 되는 결함이 다수 존재한다. 일정과 품질의 저해 요인을 제거하고 동시에 체계적으로 이를 관리하기 위하여 본 논문에서는 opportunity tree 프레임워크를 설계한다. 유사한 프로젝트를 수행 시 영역 전문가의 지식을 활용한 opportunity tree 발생되는 문제점을 예측, 대비할 수 있게 하여, 소프트웨어 프로세스를 개선할 수 있다 본 연구에서는 소프트웨어 개발 시 발생하는 일정관리에 대한 결함을 찾아내고, 원인을 식별 및 해결책을 제시하고자 한다. There are many defects that cause the schedule and qualify problems during software development. This paper designs the opportunity tree framer work that removes and manages the schedule and quality problems as well. For the similar projects, we can estimate defects and prepare to solve them by using domain expert knowledge and the opportunity tree framework which can greatly improve the software process. This research provides solution of schedule defect problem and detection of defect and its causes that happen on software development.

Learning Styles and Perceived Usefulness of Online Tools for Accounting Principles Courses

이은서 한국회계정보학회 2017 한국회계정보학회 학술대회발표집 Vol.2017 No.1

The learning styles of students and the usefulness of various learning tools are analyzed to determine whether accounting principles courses should be designed to match students learning styles. These results are compared with instructors perceptions to identify differences. Regression analysis and correlations were used to answer the research questions. Results of this study indicate that learning styles of students do not play a significant role in selecting the learning tools. In fact, it is the hard copy textbook that students select as a learning tool in the accounting principles courses, regardless of their learning styles. Results of this study also indicate that students perceptions of the usefulness of the learning tools are different from instructors’ perceptions, suggesting that students use the learning tools more than required by instructors. Results also indicate that demographic variables might be better indicators of the perceived usefulness of the learning tools available to students. We conclude that the most important goal for instructor is to encourage the students to use the tools available and to keep students involved in their learning.

무쇠꽃

이은서 수필미학 2021 수필미학 Vol.31 No.-

The Effects of Staggered Board on Audit Fees

이은서,유소진,최우석 한국회계정보학회 2015 회계정보연구 Vol.33 No.2

This paper examines the effects of staggered boards on audit fees based on two contrary theories: managerial entrenchment view and shareholder interest view. According to the managerial entrenchment view, staggered boards adversely influence firm value because of their ineffective monitoring (Manne 1965). On the other hand, the shareholder interest view suggests that staggered boards play a significant role in enhancing firm value by providing a stable business environment and long-term commitment (Koppes et al. 1999). According to these contrary views, we posit that staggered boards are significantly associated with audit fees. Based on the shareholder interest view, we expect that the association between staggered boards and audit fees would be negative because staggered boards provide boards with stability and insulation from short-term pressure (Wilcox 2002), resulting in less audit risk (Chen et al. 1993). Less audit risk leads to less audit fees (Simunic 1980). As a consequence, the association between staggered boards and audit fees would be negative. On the basis of the managerial entrenchment view, we expect that the association between staggered boards and audit fees would be positive because staggered boards exhibit ineffective monitoring (Bebchuk and Cohen 2005), resulting in increasing audit risk (Tsui et al. 2001). More audit risk corresponds to more audit fees (Low et al. 1990). As a result, the association between staggered boards and audit fees would be positive. Using the sample of 3,334 firm-year observations in U.S from 2007 to 2013, we find that staggered boards are negatively associated with audit fees, supporting the shareholder interest view. Overall, our study indicates that staggered boards are important determinants of audit fees.

중학생의 협동심에 영향을 미치는 주요 예측요인 탐색

이은서,정혜원 한국교육학회 2023 敎育學硏究 Vol.61 No.4

This study investigated to explore major predictors related to three sub-factors of cooperation(group promotion, followership, and conflict resolution) for middle school students. For this purpose, data from Wave 4 of the Korean Children and Youth Panel Survey 2018 (KCYPS 2018). Random Forest was used to explore major predictors that affect middle school students' cooperation. The results of the study are as follows. First, the main predictors commonly derived from the three sub-factors of cooperation were ‘peer relationship-positive’, ‘teacher relationship-reliability’, ‘academic enthusiasm-dedication’ and ‘self-esteem’ which had a positive relationship with cooperation. But ‘peer relationship-negative’ and ‘academic helplessness-lack of positive emotions’ were to have a negative relationships with cooperation. Second, ‘social withdrawal’ was found to have a negative relationship and ‘teacher relationship-sensitivity’ was found to have a positive relationship with group promotion, and both ‘grit-perseverance of effort’ and ‘learning time-self-study’ were found to have a positive relationship with followership. In addition, ‘academic helplessness-lack of locus of control’ has a negative relationship and ‘grit-consistency of interest' consisting of negatively-worded items has a positive relationship with conflict resolution. Based on these results, this study presented educational implications and suggestions for follow-up studies related to the development of cooperation among middle school students by revealing major predictors that affect middle school students' cooperation. 본 연구는 중학생의 협동심(집단촉진, 팔로워십, 갈등문제해결)에 영향을 미치는 주요 예측요인을 탐색하는데 목적이 있다. 이를 위하여 한국아동・청소년패널조사 2018(Korean Children & Youth Panel Survey 2018; KCYPS 2018)의 초4 패널 4차년도(중학교 1학년) 자료를 사용하였다. 중학생의 협동심에 영향을 미치는 주요 예측요인들을 탐색하기 위한 방법으로 랜덤포레스트를 이용하였고, 이에 대한 연구결과는 다음과 같다. 첫째, 협동심의 하위요인에 공통적으로 도출된 주요 예측변인인 ‘친구관계-긍정’, ‘교사관계-신뢰성’, ‘학업열의-헌신’, ‘자아존중감’은 협동심과 정적인 관계, ‘친구관계-부정’, ‘학업무기력-긍정정서 결여’는 부적인 관계가 있는 상위변인으로 나타났다. 둘째, 협동심의 하위요인에 따라 특징적으로 나타난 변인은 집단촉진에서는 ‘사회적 위축’이 부적인 관계, ‘교사관계-민감성’이 정적인 관계가 있는 것으로 나타났고, 팔로워십에서는 ‘그릿-노력지속’과 ‘학습시간-스스로 공부’ 모두 정적인 관계로 나타났다. 또한, 갈등문제해결에서는 ‘학업무기력-능동수행 결여’는 부적인 관계, 부정문항으로 구성된 ‘그릿-흥미유지’는 정적인 관계가 있는 것으로 밝혀졌다. 본 연구에서는 이러한 결과를 바탕으로 중학생의 협동심에 영향을 미치는 주요 예측요인을 밝힘으로써 중학생의 협동심과 관련한 교육적인 시사점 및 후속연구에 대한 제언을 제시하였다.

차세대 디지털컨버전스플랫폼 기술

이은서,김동환,오화용,장태규 대한전기학회 2005 전기의 세계 Vol.54 No.7

소프트웨어 결함 분석을 위한 트리거 설계

이은서,이경환 한국정보처리학회 2003 정보처리학회논문지D Vol.10 No.5