• 한국과학교육학회지
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• 제42권5호
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• pp.501-514
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• 2022

온라인 교수학습 환경으로의 변화에 따라 온라인 형성평가에 대한 관심이 높아지고 있으며, 이에 대한 예비 교사들의 준비가 필요하다. 본 연구에서는 교사 교육의 기초 토대 마련을 위해 예비 과학교사 22명을 대상으로 온라인 수업과 온라인 형성평가, 형성평가에 대한 인식을 조사하고, 이를 바탕으로 실행 과정에서 나타나는 주요 사항을 분석하였다. 사전 인식은 개방형 설문을 통해 얻은 응답을 오픈 코딩을 통해 범주화하여 범주별 빈도를 파악하였고, 사전 인식의 범주 분류 결과를 바탕으로 실행의 모습을 분석하였다. 이를 통해 현재 상태와 바람직한 활용 목표 간의 격차를 파악하고, 교사 교육에서 중점을 두어야 하는 사항은 무엇인지에 대해 논의하였다. 연구의 결과, 사전 인식에서는 온라인 수업의 어려움으로 상호작용을 언급하고, 온라인 형성평가의 장점으로 테크놀로지의 활용 및 피드백과 수업 조정을 언급하였다. 지도안과 조별 사전 인식 과정에서는 플랫폼의 테크놀로지를 활용하여 자동화된 피드백을 대부분 활용하였지만, 응답 분석 결과를 활용한 수업 조정과 상호작용이 나타나지는 않았다. 또한 온라인 형성평가의 형성적 기능에 적합하지 않은 활용 방식이 다수 나타났다. 이러한 원인은 예비 교사들의 형성평가 활용에 대한 이해가 부족하고, '평가'의 측면에 치중했기 때문으로 분석된다. 형성평가의 피드백을 통한 '형성적' 기능과 활용 방법에 대한 예비 교사들의 충분한 이해가 바탕이 될 때, 온라인 형성평가의 장점을 활용한 상호작용으로 이어질 수 있다. 따라서 형성평가의 핵심적 기능이 잘 발휘될 수 있도록 형성적 활용에 대한 역량 강화와 실질적 적용 방법에 대한 교육이 예비 교사 교육에서 강조되어야 할 것이다.

• 전기학회논문지
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• 제61권9호
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• pp.1249-1259
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• 2012

This paper proposes a Web Based Online Outage Cost Assessment and Information System(WOOCAIS) for power system outage cost assessment. The proposed WOOCAIS is a kind of web based survey method for outage cost assessment. While conventional survey methods have done outage cost assessment based on survey paper lists collected by post mail or visiting customers, the proposed WOOCAIS is a web based online survey operation and assessment system. Therefore, it can curtail expenditure for survey and also is more convenient than conventional method. It will be set up for actual outage cost assessment system of KEPCO in South Korea in the near future. The WOOCAIS will be applied in various research and actual planning and operation areas. First of all, the assessed results may be not only applied as one of objective function for generation system and grid expansion but also operational planning problems in power system.

• 한국컴퓨터정보학회논문지
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• 제20권12호
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• pp.61-66
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• 2015

In this paper, we draw a security assessment by analyzing possible vulnerabilities of the designated PC service which is supposed for strengthening security of current online identification methods that provide various areas such as the online banking and a game and so on. There is a difference between the designated PC service and online identification methods. Online identification methods authenticate an user by the user's private information or the user's knowledge-based information, though the designated PC service authenticates a hardware-based unique information of the user's PC. For this reason, high task significance services employ with online identification methods and the designated PC service for improving security multiply. Nevertheless, the security assessment of the designated PC service has been absent and possible vulnerabilities of the designated PC service are counterfeiter and falsification when the hardware-based unique-information is extracted on the user's PC and sent an authentication server. Therefore, in this paper, we analyze possible vulnerabilities of the designated PC service and draw the security assessment.

• 한국IT서비스학회지
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• 제10권2호
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• pp.293-308
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• 2011

The preliminary security assessment is an information security process to analyze security weaknesses before beginning of services. Discovering security weakness through preliminary security assessment is highly required because it costs much when security incident occur in the middle of service operation. However, this assessment is not widely spread in the online game service domain yet. In this paper, we summarize the security risk existed in the online game service, and we classify the security requirements related to the each risk. Also, through the case study, we evaluated the effectiveness of preliminary security assessment in this domain. In addition, we suggest checklists that should be reviewed once in game-client side, network-side and game-server side for the purpose of security enhancement.

• 컴퓨터교육학회논문지
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• 제15권6호
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• pp.33-41
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• 2012

본 논문은 온라인 평가 문항 관리 시스템 및 방법에 관한 것이다. 제안하는 시스템은 학습자 정보 데이터베이스, 영역별, 난이도별로 분류된 문항을 저장하는 문제 은행 데이터베이스로 구성된다. 문제은행 데이터베이스는 특정 학습자 또는 특정 학습에 대한 문항을 선택하는 문항 선제부, 특정 학습자 또는 특정 학습에 대한 문제지를 제작하는 문제지 제작부, 문제지를 저장하였다가 온라인 테스트를 수행할 때 출력하는 문제지 은행 데이터베이스를 포함한다. 학습자가 온라인 테스트에 제출된 문항들에 대한 문항 선택순서, 보기 선택순서, 클릭회수, 반응시간에 대한 평가 데이터를 수집하는 온라인 테스트부, 및 온라인 테스트부로부터 수집된 학습자의 온라인 테스트 평가 데이터를 분석하여 학습자의 학습수준과 학습능력, 성향을 평가하고 진단하여 보고하는 반응패턴 분석부를 포함한다. 제안하는 시스템은 보기 선택순서, 클릭회수, 반응시간을 학습자의 평가결과에 반영하여 효율적으로 학습자의 학습수준과 학습능력, 성향을 평가하고 진단할 수 있다.

• 한국문헌정보학회지
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• 제44권4호
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• pp.155-178
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• 2010

Assessment of information credibility is a ubiquitous human activity given that people constantly make decisions and selections based on the value of information in a variety of information seeking and use contexts. Today, people are increasingly engaging in diverse online activities beyond searching for and reading information, including activities such as creating, tagging and rating content, shopping, and listening to and watching multimedia content. The Web 2.0 environment presents new challenges for people because the burden of information evaluation is shifted from professional gatekeepers to individual information consumers. At the same time, however, it also provides unprecedented opportunities for people to use tools and features that help them to make informed credibility judgments by relying on other people's ratings and recommendations. This paper introduces fundamental notions and dimensions of credibility, and contends that credibility assessment can be best understood with respect to human information behavior because it encompasses both the level of effort people exert as well as the heuristics they employ to evaluate information. The paper reports on a survey study investigating people's credibility judgments with respect to online information, focusing on the constructs, heuristics, and interactions involved in people's credibility assessment processes within the context of their everyday life information activities. Using an online activity diary method, empirical data about people's online activities and their associated credibility assessments were collected at multiple points throughout the day for three days. The results indicate that distinct credibility assessment heuristics are emerging as people engage in diverse online activities involving more user-generated and multimedia content. A heuristic approach suggests that people apply mental shortcuts or rules of thumb in order to minimize the amount of cognitive effort and time required to make credibility judgments. The paper discusses why a heuristic approach is key to reaching a more comprehensive understanding of people's credibility assessments within the information-abundant online environment.

• Smart Structures and Systems
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• 제24권3호
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• pp.319-332
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• 2019

Structural health monitoring (SHM) is of great importance to super high-rise buildings. The Shanghai Tower is currently the tallest building in China, and a complete SHM system was simultaneously constructed at the beginning of the construction of the tower. Due to the variety of sensor types and the large number of measurement points in the SHM system, an online automatic structural health assessment method with few computations and no manual intervention is needed. This paper introduces a structural health assessment method for the Shanghai Tower that uses the coefficients of an autoregressive (AR) time series model as structural state indicators. An analysis of collected data indicates that the coefficients of the AR model are affected by environmental factors, and the principal component analysis method is used to remove the influence of environmental factors. Finally, the control chart method is used to track the changes in structural state indicators, and a plan for online automatic structure health state evaluation is proposed. This method is applied to long-term acceleration and inclination data from the Shanghai Tower and successfully identifies the changes in the structural state. Overall, the structural state indicators of the Shanghai Tower are stable, and the structure is in a healthy state.

• 유통과학연구
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• 제21권4호
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• pp.47-56
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• 2023

Purpose: the research aims to analyze the impact of the distribution of knowledge through online learning on the intellectual potential of PhD students and produce recommendations for policy to improve intellectual capacity. During the literature review, it was determined that a large number of studies examined the impact of online learning on the quality of education at different levels. Research design, data and methodology: the research methodology is based on subjective assessment and studying the students' opinions. The basis of the study was a comprehensive analysis of primary data obtained through a sociological survey of PhD students. 324 respondents from humanitarian, medical and natural faculties participated in the survey. Results: the study revealed that online learning helps increase students' intellectual potential. PhD students had a positive attitude towards the transition from traditional education to online learning. It should be noted that, according to the results, the most popular gadgets were laptops and smartphones, which were characterized by high mobility and ease of use. Based on the obtained results, recommendations were developed for the formation of online learning with a focus on increasing students' intellectual potential. Conclusions: based on the results of the assessment of educational and innovative potential, policy recommendations and further research in this area were proposed.

• Journal of Information Technology Applications and Management
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• 제16권4호
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• pp.41-58
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• 2009

This research investigated how people are influenced to adopt online review. We applied the Elaboration Likelihood Model (ELM) and the Technology Acceptance Model (TAM) to this study. Our research model highlights the assessment of online review usefulness as a mediator from online review quality to online review adoption. This research predicted online review consensus has a role to bulid up online reviw usefulness. This study also includes vividness and perceived similarity as determinants of online review quality. Survey data reflect user's perceptions of actual online review they read. Results support most of research hypotheses except hypothesis related to moderating effect of user involvement. This research offers a model for understanding online review user's acceptance. Additional theoretical and practical implications are also discussed in the paper.

• 문화기술의 융합
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• 제9권3호
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• pp.385-390
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• 2023

본 연구는 비대면 수업 환경에서 학생들이 성적평가에 대해 어떻게 인식하고 있는지 구체적으로 이해를 돕고자 Google Classroom에 참여한 대상으로 설문조사를 실시하여 비대면 수업 성적평가에 대한 지각된 공정성의 선행요인과 결과요인을 탐색하였다. 우리는 콘텐츠 상호작용성 수준에 따라 학생들이 성적평가의 공정성을 인식하는 수준이 달라질 수 있음을 발견하였고 사회적 실재감이 학생들의 지각된 성적평가 공정성을 예측하는 변인임을 검증하였다. 또한, 지각된 성적평가 공정성은 수업에 대한 만족도와 학업 성취도에 유의미한 영향을 주는 것을 발견하였다. 5-8 바랍니다.