• 한국전자통신학회논문지
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• 제19권4호
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• pp.709-720
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• 2024

본 연구는 가치기반수용모델에 소비자 만족도를 추가하여 이미지 중심의 생성형 인공지능에 대한 사용자의 지속이용의도에 영향을 미치는 요인을 탐색하였다. 주요 결과를 간략하게 제시하면 첫째, 즐거움은 지각된 가치에 유의한 영향을 미치지 못하였으나, 유용성은 지각된 가치에 긍정적 영향을 미치는 것으로 나타났다. 둘째, 비용과 기술성은 지각된 가치에 부정적 영향을 미치는 것으로 나타났다. 셋째, 지각된 가치는 소비자 만족도와 지속이용의도에 긍정적 영향을 미치는 것으로 나타났다. 넷째, 소비자 만족도는 지속이용의도에 긍정적 영향을 미치는 것으로 나타났다. 이상의 결과에 근거하여 사용자의 이미지 중심 생성형 인공지능에 대한 지속이용의도를 높이기 위해서는 이미지 중심의 생성형 인공지능이 가지는 유용성과 이용과정에서의 즐거움을 인식시키는 것이 중요하며, 그와 동시에 사용자들이 수용 가능한 수준에서의 합리적 비용과 이용방법에서의 복잡성을 최소화함으로써 사용자의 지각된 가치와 만족도를 높이는 것이 중요할 것이다.

• Journal of Information Technology Applications and Management
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• 제20권3_spc호
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• pp.259-278
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• 2013

At the center of the repeating evolution of IT industry, there is mobile computing in the ubiquitous environment, and the increasing usage of smart phones contribute more to its growth. P corporation co-developed with Google and implemented smart work system called SWP for the purpose of 'communication and collaboration with co-workers' beyond the general goal of increasing productivity and comfort of employees. The primary objective of this study is to objectively analyze the influence of the effect factor from end user's perspective and user satisfaction on SWP usage, intention for continuous usage and individual performance. To accomplish this research purpose, this study established research models and hypothesis by collective review about information system success models, and tested the research hypotheses using the structural equation modeling technique by data collected from 320 SWP system users of P corporation. Variations for system satisfaction evaluation standard are 1)SW system usage 2) intention for continuous usage 3) individual performance, effect variations are 1) social factors 2) technical factors 3) combination of social and technical factors. Therefore, this study is about influence factors on success of SWP system and how the factors impact the outcome. The test results of this research model is summarized as follows. Firstly, system user's satisfaction had positive impact on all three; SWP system usage, intention for continuous usage and individual performance. Secondly, social factor 'SWP control system' and technical factor 'information quality' and 'system quality' had positive impact on SWP system user satisfaction, while social factor 'shared value' and technical factor 'service quality' did not have significant effect on user satisfaction. Shared value however, had interactive effect with 'information quality' and 'service quality'. This study is expected to contribute to spread of academic research on smart work system by suggesting a model that can show important factors for corporation while explaining the successful implementation of SWP and its continuous usage.

• 융합보안논문지
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• 제11권3호
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• pp.55-66
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• 2011

스마트폰(smartphone)은 PC와 같은 기능과 더불어 급 기능을 제공하는 휴대전화이다. 소비자들이 어떤 제품이나 서비스를 선택하는데 있어서 기본적으로 고려하는 것이 제품이나 서비스의 본질적 가치라고 한다면 네트워크 외부성 측면에서의 가치도 소비자의 제품 또는 서비스의 선택에 큰 영향을 미치고 있다. 지금까지 네트워크 외부성에 대한 경제학적 측면의 연구가 진행되어왔으나 마케팅적 측면에서의 연구는 부족한 편이다. 따라서 본 연구는 소비자(제품사용자)의 만족도와 지속적 사용의도에 스마트폰의 본질적 가치, 네트워크 가치 등의 제품의 가치가 영향을 미치는지 연구하였다. 전반적인 분석 결과에서 나타난 것은 전통적으로 모바일폰의 구입이나 재사용에서 중요하다고 할 수 있는 본질적 가치보다는 스마트폰에서는 네트워크 가치가 영향요인으로 파악되었다. 본 연구에서는 스마트폰의 기능을 많이 사용하고 또 잘 사용할 것으로 판단하여 20대 대학생들을 대상으로 연구하여 스마트폰의 가치가 사용만족도와 지속적 사용 의도를 파악할 수 있었다. 스마트폰의 통화료는 사용자만족도에 영향을 미치는 것으로 나타났다. 스마트폰의 액정도 사용자만족도에 영향을 미치는 것을 나타났고 크기와 무게는 스마트폰의 사용자만족도에 영향을 미치지 않는 것으로 나타났다. 액정의 해상도 및 디자인 등이 더 중요하다는 것으로 분석된다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권4호
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• pp.1887-1898
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• 2018

In this paper, a method to classify insider threat activity is introduced. The internal threats help detecting anomalous activity in the procedure performed by the user in an organization. When an anomalous value deviating from the overall behavior is displayed, we consider it as an inside threat for classification as an inside intimidator. To solve the situation, Markov Chain Model is employed. The Markov Chain Model shows the next state value through an arbitrary variable affected by the previous event. Similarly, the current activity can also be predicted based on the previous activity for the insider threat activity. A method was studied where the change items for such state are defined by a transition probability, and classified as detection of anomaly of the inside threat through values for a probability variable. We use the properties of the Markov chains to list the behavior of the user over time and to classify which state they belong to. Sequential data sets were generated according to the influence of n occurrences of Markov attribute and classified by machine learning algorithm. In the experiment, only 15% of the Cert: insider threat dataset was applied, and the result was 97% accuracy except for NaiveBayes. As a result of our research, it was confirmed that the Markov Chain Model can classify insider threats and can be fully utilized for user behavior classification.

• 한국정보시스템학회지:정보시스템연구
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• 제32권1호
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• pp.1-21
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• 2023

Purpose The purpose of this study is to investigate the intention of early application users in consideration of the characteristics of digital finance-based MyData service users. It is expected that user characteristics will affect the intention to use MyData service, which has not yet been advanced, and accordingly, it will examine how the characteristics of the initial users of MyData service and the intention to use it are connected. Design/methodology/approach The model used in this study is a value-based adoption model (VAM), and a lot of research has been conducted on information technology and online user acceptance and continuous use intention of online users. VAM has been proven useful through empirical analysis in many studies. The value-based acceptance model is a method of analyzing the intention to use Benefits and Sacrifices as the main elements of perceived value. It can be said to be a model that can analyze the benefits of use and the sacrifices to be made. Findings According to the analysis results of this study, it was found that usefulness, enjoyment, and reliability, which are the benefits of MyData service apps, had a positive effect on perceived value, which is partially consistent with existing research results. However, it was found that complexity, which is the sacrifice of MyData service apps, negatively affects perceived value and security has no negative impact. The results of security are considered to be complementary to financial institutions because MyData service deals with financial data based on personal information, and the research hypothesis is rejected because users' demands are relatively low. Therefore, MyData service apps should do more to increase benefits (usefulness, enjoyment, and reliability) than to reduce sacrifice (complexity) to users.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2007년도 한국지능정보시스템학회
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• pp.229-238
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• 2007

This study was intended to point out the limit of existing digital content-centered studies, or approaches from the viewpoint of the supplier and in the aspect of business profit model and find ways to assess the quality of digital content, considering the characteristics of digital content. For this, the study is to apply value innovation strategy to digital content assessment, to analyze the applicability, and to propose a new and practical framework for digital content assessment method. To this end, this study selected the global No. 1 search service provider Google and local portal site Naver search service. The study on assessment factors by value innovation strategy was based on existing literature, while user-value elements in that respect were confined to information quality, interactivity, communication, interactive storytelling, and usability. This study objectified the relation with the value innovation strategic analysis, through qualitative and quantitative analyses on value elements of search service users.

• 한국컴퓨터정보학회논문지
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• 제21권6호
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• pp.117-125
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• 2016

In this research, economic analysis of Integrated Information System for Nano-convergence Industy (hereafter 'NANOIN'), which was developed and has been in operation by Organization of Nano-convergence Industrial Cooperation, is conducted. For this purpose, the research has been carried out in the following order. First, NANOIN user's maximum willingness-to-pay is estimated using contingent valuation method, the number for NANOIN users is estimated using Bass Diffusion Model, and annual benefit from NANOIN is estimated. Next, annual cost from NANOIN is estimated using annual budget for NANOIN related planned activities. Finally, economic value of NANOIN is evaluated using economic analysis applied to the estimated annual NANOIN benefit and cost. From the economic analysis, it is found that NANOIN has some economic value. It is expected that the procedures suggested in this research can help to systematically evaluate economic value for public goods which have not only uncertain benefit from user's side but also uncertain demand just like NANOIN.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제14권6호
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• pp.614-618
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• 2008

인터넷 서비스의 급속한 발전으로 멀티미디어 데이타의 양이 크게 증가함에 따라, 이를 분석하여 유용한 정보를 얻기 위해 사용자 개개인에 초점을 맞춘 효율적인 검색기술이 필요하게 되었다. 하지만 최근 웹사이트에서 제공하는 사용자 모델링 서비스는 텍스트 기반 페이지 구성이나 추천 검색 등에만 국한되어 있는 단점이 있다. 본 논문에서는 사용자 모델링 기법을 동영상 검색에 적용하기 위해 사용자의 선호도를 베이지안 네트워크로 모델링하고, 추론된 확률 값을 검색에 반영하는 방법을 제안한다. 이를 위해 실제 연구실 환경 내에 존재하는 컨텍스트 정보를 정의하였고, 설치된 카메라로부터 얻어진 동영상이 포함하는 컨텍스트 정보를 텍스트의 형태로 주석을 달았다. 사용자로부터 입력받은 사용자 개인의 정보는 설계된 베이지안 네트워크 모델의 증거 값으로 사용되어, 그로부터 사용자의 선호도를 추론하도록 하였다. 베이지안 네트워크의 추론 결과로 얻어진 확률 값은 검색에 반영되어 각 사용자의 선호도에 맞는 검색 결과를 보여준다. 사용자 평가 결과, 제안하는 모델을 사용하여 선택된 결과의 만족도가 일반적인 검색의 결과에 비해 높음을 확인하였다.

• 한국컴퓨터정보학회논문지
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• 제20권1호
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• pp.29-37
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• 2015

Nowadays, the user-centric application based web 2.0 has replaced the web 1.0. The users gain and provide information by interactive network applications. As a result, traditional approaches that only extract and analyze users' local document operating behavior and network browsing behavior to build the users' preference profile cannot fully reflect their interests. Therefore this paper proposed a preference analysis and indicating approach based on the users' communication information from MicroBlog, such as reading, forwarding and @ behavior, and using the improved PersonalRank method to analyze the importance of a user to other users in the network and based on the users' communication behavior to update the weight of the items in the user preference. Simulation result shows that our proposed method outperforms the ontology model, TREC model, and the category model in terms of 11SPR value.

• Journal of Information Technology Applications and Management
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• 제14권3호
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• pp.15-48
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• 2007

As the mobile Internet spreads around the globe, a cross-national difference in the use of mobile services has become an important issue. The goal of this study is to propose and verity cross-national differences in the effect of each value-type on user satisfaction with the mobile Internet. We propose an analytic framework of four different types of value and apply this model to the value structures of mobile Internet users in two different countries. Large-scale online surveys were conducted in Korea and Hong Kong simultaneously with the same questionnaire. Results show that the relationships between the value components and user satisfaction varied between the two countries.