• 한국소프트웨어감정평가학회 논문지
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• 제17권1호
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• pp.93-99
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• 2021

최근 COVID-19 등의 영향으로 온라인 교육에 대한 요구가 급증하고 있다. 공학계열의 온라인 교육에 있어 가장 큰 어려움 중의 하나는 실험관련 교과목을 어떻게 효율적으로 온라인상에서 수행할 수 있느냐는 것이다. 본 연구에서는 전기전자정보통신 분야 교육에서 필수적으로 요구되는 마이크로컨트롤러 응용 학습을 위해 사용할 수 있는 가상실험 시스템 구축을 위해 반드시 필요한 마이크로컨트롤러 기능 모델링에 대해 기술하고, 자바언어로 구현하여 가상 실험에 적용함으로써 그 유용성을 검증하였다.

• 한국멀티미디어학회논문지
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• 제24권4호
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• pp.593-600
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• 2021

In this paper, we present the FlappyBird Competition System (FCS) implementation, a competition-based automated assessment system used in an entry-level artificial intelligence (AI) course at a university. The proposed system provides an evaluation method suitable for AI courses while taking advantage of automated assessment methods. Students are to design a neural network structure, train the weights, and tune hyperparameters using the given reinforcement learning code to improve the overall performance of game AI. Students participate using the resulting trained model during the competition, and the system automatically calculates the final score based on the ranking. The user evaluation conducted after the semester ends shows that our competition-based automated assessment system promotes active participation and inspires students to be interested and motivated to learn AI. Using FCS, the instructor significantly reduces the amount of time required for assessment.

• 복식문화연구
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• 제24권6호
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• pp.803-816
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• 2016

The purposes of this study were to investigate the influences of channel assessments on the usage of multi-channels by product types, and the differences in the usage of multi-channels among product types in buying decision making process for fashion products. Data were collected from 510 consumers in their 20s to 50s with purchasing experiences through multi-channel distribution system and living in Seoul and Kyunggi province; 491 were analyzed after deleting incomplete questionnaires. Factor analysis, multiple regression analysis and one-way ANOVA were used for statistical analysis by using SPSS 18.0. The results were as follows: 5 factors were extracted for channel assessment: utility, accuracy, risk, price benefit and sharing information. Price benefits, utility and sharing information for online channel tended to influence positively on the usage of online channel and online+offline channels. Accuracy and low perceived risk of offline influenced positively on offline and on+offline channel usages. The usage levels of on-line and off-line channels for cosmetics were significantly lower than the usage levels for clothes and accessories on information search, evaluation of alternatives, and purchase stages. Significant differences were also found in the usage levels of multi-channels (on+off-line) on information search and evaluation of alternatives stages. The usage levels of the multi-channels for clothes were the highest followed by those of accessories and cosmetics in order.

• 패션비즈니스
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• 제20권1호
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• pp.53-68
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• 2016

The purpose of this research was to evaluate the possibility of sustainable development of online advertisements conducted by fashion companies. Factors composed of sustainable development indexes of online advertisement that had been developed in previous studies were identified, and then the relevance between purchase intention and advertisement experience was evaluated. An online survey of 573 persons in the 20 to 40 age range who own mobile phone and have experienced online advertisements of a fashion brand or a fashion company was conducted. The data collected from the survey and the results are as follows. First, the validity and reliability from confirmatory factor analysis of six factors (namely, personal information protection, web use infringement, advertisement expression harmfulness, advertisement expression objectivity, emotional responsibility, and environment-friendly) and 21 questions was confirmed. Second, it confirmed that consumers gave low points to the evaluation of sustainable development indexes of online advertisement of fashion companies. In particular, that consumers gave low points with regard to both environmental friendliness and web use infringement. Third, it was identified that personal indexes such as personal information protection, web use infringement, and indexes relating to advertisement expressions do not directly influence the consumer's purchase intention. However, social indexes like emotional responsibility and environmental friendliness do have an influence on the consumer's positive action intention.

• 한국기록관리학회지
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• 제14권1호
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• pp.75-100
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• 2014

국가기록원 등 많은 기록관에서 온라인 검색도구를 적극 활용하고 있으나 여러 측면에서 개선이 필요한 상황이다. 이에 본 연구에서는 국가기록원을 중심으로, 호주, 영국, 미국의 국립기록관에서 제공하는 온라인 검색도구현황을 분석하였다. 또 호주, 영국, 미국 국립기록관의 검색도구를 직접 사용하여 각각의 장단점을 파악해 보도록 하기 위해, 실제 이용자들을 선정하여 포커스 그룹 인터뷰를 통한 평가를 실시하였다. 그 결과를 기반으로, 전반적 기능 및 계층별 검색, 검색옵션 및 주제어검색, 검색결과제시, 기록정보콘텐츠 서비스 등의 측면에서 온라인 검색도구의 개선 및 발전 방향을 제시하였다.

• International Journal of Computer Science & Network Security
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• 제21권12spc호
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• pp.483-490
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• 2021

The COVID-19 pandemic has posed significant community challenges towards higher education around the world. The urgent and unexpected request for full-time university courses to switch over to online teaching was a particular challenge. Online learning and learning imply a certain pedagogical knowledge content (PKC), mainly related to the design and organization for better learning and the creation of unique learning environments using digital technologies. With the help of the present academic paper, we provide some expert opinion on the PKC connected with online learning with the aim of helping non-university professionals (that is, those with lack of online learning experience) navigate these challenging times. Our findings point to the planning of learning activities with certain features, a combination of three types of presence (social, cognitive and facilitative) and the need to adapt the assessment system to new learning requirements. We will conclude by contemplating on how responding to a crisis can improve teaching and learning practices in the post-digital era.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권8호
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• pp.2083-2100
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• 2023

The rise of Industry 5.0 has led to a smarter and more digital way of doing business, but with it comes the issue of user privacy and security. Only when privacy and security issues are addressed, will users be able to transact online with greater peace of mind. Thus, to address the security and privacy problems associated with industry blockchain technology, we propose a privacy protection scheme for online financial transactions based on verifiable ring signatures and blockchain by comparing and combining the unconditional anonymity provided by ring signatures with the high integrity provided by blockchain technology. Firstly, we present an algorithm for verifying ring signature based on distributed key generation, which can ensure the integrity of transaction data. Secondly, by using the block chain technique, we choose the proxy node to send the plaintext message into the block chain, and guarantee the security of the asset transaction. On this basis, the designed scheme is subjected to a security analysis to verify that it is completely anonymous, verifiable and unerasable. The protection of user privacy can be achieved while enabling online transactions. Finally, it is shown that the proposed method is more effective and practical than other similar solutions in performance assessment and simulation. It is proved that the scheme is a safe and efficient online financial transaction ring signature scheme.

• 한국환경보건학회지
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• 제39권6호
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• pp.532-540
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• 2013

Background: Exposure factors for consumer products have been developed since the 1980s. Such exposure factors are important in risk assessment. Since the exposure/use patterns of consumer products in a country may reflect its respective cultural, meteorological, and socio-economic circumstances, unique Korean exposure factors for consumer products are needed. Such exposure factors are required for newly-enacted chemical regulations in Korea. For this review, published papers and survey reports on exposure factors of consumer products were examined for their assessment methodologies. Results: Investigation into exposure factors for consumer products used a variety of methods: home visit, online, telephone, and mail surveys using questionnaires; face to face interviews; modeling using a constructed database; and direct measurement. To collect more accurate exposure information or to check the reliability of the sampling method, some studies were repeated using the same questionnaire, in-home observation, direct measurement of usage, and videotaping. In Korea, nationwide exposure surveys were conducted five times over five years to obtain Korean exposure factors. However, with the exception of the $5^{th}$-year study, the surveys were online questionnaires and only the $5^{th}$-year study validated the accuracy of exposure information by re-visits and direct measurement. Conclusion: Accurate exposure factors are an essential part of risk assessment to assure safe use of consumer products. For better and safer management of consumer products, accurate exposure factors in Korea should be assessed for various exposure pathways.

• 디지털융복합연구
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• 제19권8호
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• pp.275-283
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• 2021

본 연구는 형성평가 (FA)와 총괄평가 (SA) 사이의 관계를 검사하여 대학 EFL 수업 평가 개선을 돕고자 수행되었다. 이 연구의 참여자들은 중국의 4년제 대학에서 선택적으로 8주간의 대학 영어 과정을 수강했던 75명의 학부생들이었다. FA 데이터는 온라인 교육 플랫폼인 Mosoteach를 사용하여 자기 보고식 설문 조사에 의해 코스 마지막 과정에서 수집되었다. 연구 결과를 도출하고자, Pearson 상관관계 분석을 통해 FA와 SA(기말고사 및 수행활동 점수)간의 관련성을 SPSS로 분석하였다. 전반적으로 그 두 평가 점수 간 유의미한 긍정적 상관관계가 있다는 것으로 나타났다. 학생들의 단원 평가, 온라인 토론, 브레인스토밍, 신속한 답변, 그리고 과제 수행에서 교수자들의 엄지척 클릭수와도 깊은 상관관계를 보였다. Mosoteach 앱을 통해 관리되는 FA가 학생들의 수업의 학업 성과를 향상 시킬 수 있었다는 결과는 교육 평가 개선을 위한 경험적 기반을 제공할 수 있음을 시사하였다. 이러한 연구 결과에 따라 EFL 수업 평가에 대한 중요성이 설명되었다.

• 디지털융복합연구
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• 제15권9호
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• pp.301-309
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• 2017

이 연구는 온라인 치매가족 교육프로그램 개발을 위한 기초자료로 치매환자 가족의 프로그램 사용 의향과 프로그램 구성에 대한 요구도를 파악하기 위해 실시되었다. 서울시 치매관리 사업에 등록된 치매노인을 돌보는 가족 220명을 대상으로 1:1 개별면접 또는 온라인 설문 조사를 통해 자료를 수집하였으며, 수집된 자료는 기술 통계와 t-test를 이용하여 분석하였다. 연구결과, 50% 이상의 대상자가 온라인으로 제공되는 가족교육 프로그램을 이용할 의향이 있다고 응답하였다. 프로그램 요구도는 치매에 대한 정보를 알려주는 동영상 강의와 치매환자를 돌보는 사례 동영상에 대한 요구도가 가장 높았으며, 성별과 연령대에 따라 요구도 항목에 차이가 있는 것으로 나타났다. 온라인 교육프로그램은 시공간적 한계를 극복해서 보다 효과적인 교육을 제공할 수 있는 수단이며, 본 연구 결과에 따라 온라인 교육프로그램 효과를 극대화하기 위해서는 획일화된 방식보다 대상자의 특성을 고려한 개별화된 맞춤형 프로그램 운영 전략 및 체제를 마련하는 것이 중요하다.