• Proceedings of the Korean Society of Computer Information Conference
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• 2020.07a
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• pp.49-52
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• 2020

KMPlayer는 2015년부터 국내 기업으로 개발된 세계적으로 넓게 확산된 국산 미디어 플레이어 프로그램이다. 현재는 IOS, Android 버전이 모바일 버전으로 출시되어있다. KMPlayer 안드로이드 어플리케이션은 천만 명 이상의 다운로드 수를 보유하고 있고, 많은 사용자 수를 기반으로 발생하는 방대한 데이터들은 분석 기준에 따라 다양한 형태의 그래프 보고서로 만들어지고 있다. 본 논문에서는 KMPlayer 사용 국가들의 활성 사용자 수 그래프를 분석해, 각 국가에서 발생하는 문화적, 사회적 사건이 KMPlayer 안드로이드 버전의 활성 상용자 수 그래프에 어떤 영향을 미치는지, 그리고 역으로 활성 사용자 수 그래프의 변화가 현실의 어떤 사건을 반영하고 있는지에 대해 연구하고자 한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.01a
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• pp.135-138
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• 2020

본 연구에서는 사용자의 시간·공간적 정보를 사용한 맞춤형 문화관광 시스템을 제안한다. 이 시스템은 사용자의 시스템 접근 위치와 시간을 사용하여 사용자와 가까운 문화관광지와 참여가능한 축제와 활동을 선별한다. 또한 이 시스템은 사용자의 요구에 따라 전체적인 활동을 보여줌에 있어서 OpenAPI에서 데이터를 가져와서 Chart와 Grid layout를 통해 시각적으로 이해하기 쉽게 하고, Index을 통해 정보를 분류하여 파악할 수 있게 한다. 본 연구는 정형화된 문화관광 시스템보다 다양한 형태의 문화관광이 이루어질 수 있는 시스템을 개발하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.37-39
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• 2023

사용자 응용 프로그램의 특징을 분석하고 효율적인 시스템 운영을 통하여 사용자 프로그램 최적화를 지원하기 위하여 소프트웨어 프로파일링을 수행한다. 특히 국가 슈퍼컴퓨터인 누리온과 같이 8,400대가 넘는 계산노드로 구성된 클러스터 시스템에서 응용 프로그램의 프로파일링 데이터를 사용자의 개입없이 수집하고 데이터를 분석하는 것에는 한계가 있다. 본 연구에서는 배치작업 스케줄러를 활용하여 사용자의 개입 없이 응용 프로그램의 프로파일링 데이터를 수집하기 위한 방법을 제안한다. 그리고 제안한 방법을 누리온에서 구현하고 사용자 응용 프로그램이 실행될 때 프로파일링 데이터가 수집되는 것을 확인한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.05a
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• pp.713-716
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• 2007

사용자의 지리적 위치에 기반한 서비스를 제공하는 위치 기반 서비스는 유비쿼터스 컴퓨팅의 중요한 응용이 되고 있으며, 이와 관련하여 다양한 연구들이 계속 진행 중이다. 기존의 연구들이 사용자의 위치 정보와 해당하는 서비스들의 단순 연결에 불과했다면, 본 논문에서는 사용자와 디바이스 간의 상호작용 정보를 기반으로 병합적 클러스터링 알고리즘을 이용하여 사용자의 위치에서 가장 적합한 지능적인 서비스를 제공하는 알고리즘을 제안한다.

• Information Systems Review
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• v.16 no.3
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• pp.191-214
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• 2014

In this study, based on Privacy Calculus Model, we study whether users' intention of continuous use of closed-type SNS is affected by information privacy concern. In addition, we propose a model that studies if the major factors of the intention of continuous use which are trust, satisfaction and benefits could control the information privacy concern's effect on the intention of use. As a result, companies have to consider protecting the psychological privacy and information privacy of the individual when they design SNS.

• Journal of the Korean Society for Library and Information Science
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• v.45 no.2
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• pp.209-228
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• 2011

Web search behavior has evolved. People now search using many diverse information devices in various situations. To monitor these scattered and shifting search patterns, an improved way of learning and analysis are needed. Traditional web search studies relied on the server transaction logs and single query instance analysis. Since people use multiple smart devices and their searching occurs intermittently through a day, a bundled query research could look at the whole context as well as penetrating search needs. To observe and analyze bundled queries, we developed a proprietary research software set including a log catcher, query bundling tool, and bundle monitoring tool. In this system, users' daily search logs are sent to our analytic server, every night the users need to log on our bundling tool to package his/her queries, a built in web survey collects additional data, and our researcher performs deep interviews on a weekly basis. Out of 90 participants in the study, it was found that a normal user generates on average 4.75 query bundles a day, and each bundle contains 2.75 queries. Query bundles were categorized by; Query refinement vs. Topic refinement and 9 different sub-categories.

• The Journal of the Korea Contents Association
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• v.12 no.11
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• pp.49-57
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• 2012

Recently as the user experience's importance has been emphasized, there has been many tries of various research methodology in order to understand the user. Specially, as the political investigation method's user understanding method based on the statistical analysis so far has encountered a limit, there has been a continuous tendency to try to introduce a humanitarian or cultural anthropological methodology. As part of this effort, there has been many tries of various approach methods of the Ethnography which is the cultural anthropological typical research methodology, but among those the Diary Study Method is mentioned as one of the effective methodologies. Therefore this thesis applies the Diary Study Method to the notebook PC bundle SW's attitude research and tries a deep rooted research about the user attitude. Also centered to the project of understanding the notebook PC bundle SW's user receptivity. it shows a specific example of the Diary Study applied to the user understanding. Through this process, we will examine the summary about the Ethnography research method, and will discuss an effective research methodology by through the process of analyzing and deducting the user inclination by applying and designing the Diary Study to the project. That is to say, it was progressed by actually applying the research methodology through a specific case, with the purpose of breaking away from the textbook discussion and progress with an application aspect discussion. Through the current research, we will verify an active user-inclined process about the user's notebook PC SW, and it is expected to be useful in establishing a SW UX strategy and distribution related to the bundle software.

• Journal of Korea Multimedia Society
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• v.10 no.10
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• pp.1356-1366
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• 2007

Many personalized Services that provide users with adaptive information according to users' requirements and preferences have been researched and developed. However, existing approaches are difficult to share a user's information among heterogeneous services because these approaches manage users' preferences in a single system. In this paper, we propose a user preference sharing model based on the Semantic Web as a solution to resolve the problem. Our model enables user preferences to be described and shared over service-specific ontologies which are affected by the feature of each service. Our model is analyzed and evaluated with an implementation of the middleware that supports our model. Our approach has the advantage of providing more efficient personalized services than existing approaches because it can describe users' preferences centering around each service and share these information among heterogeneous personalized services.

• Journal of Digital Convergence
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• v.15 no.6
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• pp.425-438
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• 2017

This study investigated the impacts of the experience attributes of JJALBANG broadcast images on satisfaction with 221 viewers in their 20s and analyzed the mediation effect of flow. The results are: First, their experience attributes affected flow, not directly affecting satisfaction while flow directly affected satisfaction. Second, securing flow was an important predictor for connecting experience attributes to satisfaction through the effect resolution. Flow alone can predict satisfaction, so its impact on experience is very important. Visual attribute had the greatest influence on flow and satisfaction, followed by situation, information, and interaction, which affected satisfaction through flow. This study found the importance of full mediation effect of flow and got implications for effectively providing experience and flow in strategies for viewing JJALBANG.

• Information Systems Review
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• v.8 no.3
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• pp.153-174
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• 2006

The purpose of this study is to identify the factors affecting users' continuing use of Hedonic Information Systems(HIS). Focusing on users' post-adoption behaviors, this study proposes a research model which incorporates technology acceptance theory into expectation disconfirmation theory and investigates the causal relationship among five factors; perceived usefulness, perceived ease of use, disconfirmation, user satisfaction, and continuance intention to use a blog as HIS. The results show that satisfaction is significantly influenced by disconfirmation and post expectations(perceived usefulness and perceived ease of use), and in particular the impact of disconfirmation on user satisfaction is stronger than those of perceived usefulness and perceived ease of use. The results also indicate that while perceived usefulness and user satisfaction have significant impacts on continuance intention, perceived ease of use does not do so and has only an indirect impact on continuance intention through perceived usefulness and user satisfaction.