• 한국정보시스템학회지:정보시스템연구
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• 제28권4호
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• pp.293-311
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• 2019

목적 본 연구는 2011년부터 8년간의 영문문헌에 대해 메타분석법을 이용하여 소셜미디어의 사용과 학습성과간의 관계를 규명하고자 하였다. 또한 소셜미디어 사용 상황과 연구분석방법론 변인의 조절효과 여부를 분석하였다. 연구방법론 주요 연구방법으로 유사한 연구 의문점이 제시된 선행의 실증연구들에 대해 메타분석기법을 사용하였으며, 문헌분석을 통해 정량적 데이터를 도출하고, 이를 실증 분석하였다. 연구결과 연구결과로 소셜미디어의 사용과 학습성과간에는 정의 상관을 보였으며, 상황변수와 연구방법론 변수가 조절효과를 보였다. 상황변수의 구성개념으로는 소셜미디어형태, 사용자 집단, 플랫폼 종류 등으로 하였고, 분석을 위한 측정방법 변수에는 측정모형, 데이터속성 등의 개념으로 구성하였다.

• 한국인터넷방송통신학회논문지
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• 제17권1호
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• pp.281-290
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• 2017

본 연구는 SNS를 이용하는 관람객들의 인구통계학적 특성과 SNS이용특성(SNS를 이용한 기간, SNS 평균접속 횟수, SNS 접속 시 평균 사용시간, SNS 활동유형, SNS 이용동기, 많이 사용하는 SNS 사이트, 연평균 총 공연 관람횟수, 공연관련 정보획득경로)이 선호 장르별(대중가요/콘서트, 뮤지컬, 연극, 무용/발레)로 어떠한 차이가 있는지 검정하고, SNS를 활용한 마케팅 전략의 시사점을 얻고자 하였다. 연구결과, 첫 번째 선호하는 공연 장르에 따라 관람객들의 인구통계학적 특성의 차이를 검정한 결과 성별, 연령, 결혼 여부, 가족형태, 학력수준, 근무직종, 월평균 소득수준에 차이가 있음을 알 수 있었다. 두번째. 선호하는 공연 장르에 따라 SNS 이용특성은 이용기간, 평균접속시간, 활동유형, 이용동기, 정보획득경로에 있어 차이가 있음을 알 수 있었다. 이러한 결과는 장르에 따라 공연관람객의 인구통계학적 특성과 SNS이용 특성이 보다 세부적으로 구분될 필요가 있으며, 세분화된 타겟에 따라 SNS를 통하여 공연관련 정보나 콘텐츠 특성, 소비자들의 패턴을 이용한 참여 전략 등이 구체적으로 전개되어야 함을 다시 한번 확인 할 수 있었다.

• Asia pacific journal of information systems
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• 제28권3호
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• pp.167-182
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• 2018

The purpose of this study is to investigate the relationship between knowledge sharing and academic performance in the context of quality-assurance related work. It furthermore aims to explore the role of information technology in mediating this relationship. Quantitative method was applied to collect data from the participants using an online-based questionnaire. Convenience sampling technique was used. The responses were collected from 140 participants in a university from Saudi Arabia. The study found a strong positive relationship between knowledge sharing and individual performance. It was also found out that information technology partially mediates the relationship between knowledge sharing and individual performance. The research unearths the significant contribution made by information technology in mediating the relationship between individual-level knowledge sharing and the individual performance. This helps to understand the positive impacts on individual work performance in institutions of higher education that would be derived if individuals use various forms of IT to share knowledge. The focus of the research is the individual performance as the pertinent contribution towards positive outcomes in institutional performance.

• Journal of Information Science Theory and Practice
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• 제2권3호
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• pp.29-39
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• 2014

In recent years, several studies have proposed making use of the Twitter micro-blogging service to track various trends in online media and discussion. In this study, we specifically examine the use of Twitter to track discussions of food safety in the Korean language. Given the irregularity of keyword use in most tweets, we focus on optimistic machine-learning and feature set selection to classify collected tweets. We build the classifier model using Naive Bayes & Naive Bayes Multinomial, Support Vector Machine, and Decision Tree Algorithms, all of which show good performance. To select an optimum feature set, we construct a basic feature set as a standard for performance comparison, so that further test feature sets can be evaluated. Experiments show that precision and F-measure performance are best when using a Naive Bayes Multinomial classifier model with a test feature set defined by extracting Substantive, Predicate, Modifier, and Interjection parts of speech.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권6호
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• pp.2115-2130
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• 2022

With the development of over-the-top (OTT) services, the demand for content is increasing, and you can easily and conveniently acquire various content in the online environment. As a result, copyrighted content can be easily copied and distributed, resulting in serious copyright infringement. Some special forms of online service providers (OSP) use filtering-based technologies to protect copyrights, but illegal uploaders use methods that bypass traditional filters. Uploading with a title that bypasses the filter cannot use a similar search method to detect illegal content. In this paper, we propose a technique for profiling the Heavy Uploader by normalizing the bypassed content title and efficiently detecting illegal content. First, the word is extracted from the normalized title and converted into a bit-array to detect illegal works. This Bloom Filter method has a characteristic that there are false positives but no false negatives. The false positive rate has a trade-off relationship with processing performance. As the false positive rate increases, the processing performance increases, and when the false positive rate decreases, the processing performance increases. We increased the detection rate by directly comparing the word to the result of increasing the false positive rate of the Bloom Filter. The processing time was also as fast as when the false positive rate was increased. Afterwards, we create a function that includes information about overall piracy and identify clustering-based heavy uploaders. Analyze the behavior of heavy uploaders to find the first uploader and detect the source site.

• 경영과정보연구
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• 제25권
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• pp.275-296
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• 2008

We tested the relationship of elements in influence about software performance. our research is detect the significant element in the software system. we affronted to find relation elements with software quality and seek what relationship is the most important in performance activity. this study's result will be useful for them ; first, give to product a high quality guide line to software developer. second, it will be use for basic information about in software examine research.

• 한국산업정보학회논문지
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• 제17권7호
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• pp.177-186
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• 2012

SNS는 인터넷 상에서 비슷한 관심을 가진 사람간에 관계를 형성하고 정보나 컨텐츠를 공유하거나 인맥 관리 등과 같은 다양한 활동을 지원하는 서비스이다. 본 연구는 UTAUT를 기반으로 하여 혁신성이 사용 의도에 어떻게 영향을 미치는 지를 분석하는 것이다. 이를 위해 성과 기대, 예상 노력, 사회적 영향, 혁신성을 독립 변수로 하고, 성별과 혁신성을 조절 변수로 하여 연구 모델을 설정하였다. 403명의 대학생을 대상으로 실증 분석한 결과는 다음과 같다. 첫째, 성과 기대, 예상 노력, 사회적 영향, 혁신성은 사용 의도에 유의적인 영향을 미치는 것으로 나타났으며, 예상 노력이 가장 큰 영향을 미치는 것으로 나타났다. 둘째, 성별은 조절 효과가 있는 반면에, 혁신성은 조절 효과가 없는 것으로 나타났다. 남성의 경우 성과 기대가 사용 의도에 미치는 영향이 강하게 나타났으며, 여성의 경우 사회적 영향이 사용 의도에 미치는 영향이 강하게 나타났다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권8호
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• pp.4038-4056
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• 2018

Recently, the most frequently studied topics related to the fourth industrial revolution (FIR) are Big data, AI, Cloud Computing and Internet of Things- these four components are collectively known as the main components of the FIR (henceforth MCs). The MCs have a wide range of effects on workers' performance. As such it is imperative that these components are properly understood. This understanding will lead to a proper recognition of the attitudes that workers need to adopt to the MCs. Specifically, the attitudes of workers to several variables need to be examined, including importance, intention to use, belief in improvement, efficacy to use, and negative cognition. Each of these variables plays a role in determining how worker's performance in the FIR era will change. The performance-related variables such as self-efficacy, expectations, and acceptance of change are also crucial. These variables are related to creation of new opportunities, and can greatly influence performance in the FIR era. This study explains how specific attitudes to MCs improve performance-related factors for FIR. The adoption of these attitudes will ultimately lead to more successful adaption to the FIR era.

• Asia pacific journal of information systems
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• 제18권4호
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• pp.83-103
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• 2008

In the new web based learning environment which has recently emerged, a variety of new learning objectives and teaching methods suited to this learning environment have been adopted. Recently, web based project-based learning methods have received a great deal of attention from those wishing to improve learning performance. The objective of this study is to identify the impact of characteristics of communication media and instruction behavior on collaborative interaction and project performance through web based group projects. The characteristics of communication media were divided into richness, flexibility, and ease of use, and the characteristics of instruction behavior were divided into support and expression, which are independent variables. Collaborative interaction as a mediate variable, was divided into information sharing and negotiation. Project performance was the dependent variable. To verify the proposed research model empirically, an experiment was conducted in which learners participated in on-line and off-line courses with group projects. The group project was conducted virtual product development(VPD), and designed a web-site about the VPD. At the end of the project, a survey was conducted. Of the 270 students, 239 responded. The students were assigned to groups of 3 or 4 members, and represented different genders and levels of computer competence. The reliability, validity, and correlation of research variables were analyzed using SPSS 14.0, and the measurement model and the structural goodness-of-fit of the research model were verified through SEM analysis using Lisrel 8.54. We found important results as follows; First, richness and ease of use has positive impacts on each of sharing information and negotiation. This suggests that richness and ease of use are useful in sharing information which is related to the task and agreeing in opinions among group members. However, flexibility has not positive impacts on sharing information and negotiation. This implies that there is no great difference in performance of PC and information literacy of user. Second, support and expression of instructor have positive impacts on sharing information and negotiation. This indicates that instructors play an important role in encouraging learners to participate in the project and communicating with them, sharing information related to the project, making a resonable decision and finally leading them to improve a project performance. Third, collaborative interaction has a positive impact on project performance. This result shows that if the ability to share information and negotiate among students was improved then a project performance would be improved as well. Recently, in the state of revitalized web based learning, it is opportune that web-based group project is practically conducted, and the impact of characteristics of communication media and characteristics of instruction behavior on sharing information, negotiating among group members and improving a project performance is verified. On the basis of these results, we propose that forms of learning, such as web based project, could be one of solution which is to enforce interaction among learners, and ultimately improve learning performance. Moreover web-based group project is able to make up for a weakness which makes it difficult to make interpersonal relations or friendship among learners in computer mediated communication or web based learning.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2006년도 춘계 종합학술대회 논문집
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• pp.113-117
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• 2006

본 연구의 목적은 관리회계 정보특성과 정보기술구조간의 적합성이 AIS성과에 미치는 영향을 분석하는데 있다. 본 연구에서는 관리회계정보 특성 변수로는 재무적 요인과 비재무적 요인을 이용하였으며, 정보기술구조는 Ahtuv 등(1989), Fiedler 등(1996)이 분류한 자료처리의 집중화와 분산화를 이용하였다. 표본 기업은 상장기업을 무작위로 425개를 선정하였으며 회수된 자료 중 137부를 분석에 이용하였다. 본 연구의 가설검증 결과를 요약하면 다음과 같다. 관리회계정보특성 변수와 정보기술구조 변수간의 적합도 검증에서는 자료처리가 집중화된 기업에서는 재무적 정보를 활용하는 기업이 비재무적 정보를 활용하는 기업보다 AIS성과가 높게 나타났다. 그러나 통계적으로는 유의성이 없었다. 자료처리가 분산화 된 기업에서는 비재무적 정보를 활용하는 기업이 재무적 정보를 활용하는 기업보다 AIS성과가 높게 나타났다. 또한 통계적으로도 높게 나타났으며, p<0.05 수준에서 유의하였다.