• 한국게임학회 논문지
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• 제15권4호
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• pp.69-78
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• 2015

온라인 게임 산업이 급격히 성장함에 따라 경제적 이득을 목적으로 한 악성 행위가 증가되고 있다. 본 논문에서는 온라인 게임 내 악성 행위 중 높은 비중을 차지하는 게임 봇 탐지를 위한 모티베이션 기반 ERG 이론을 적용한 탐지 방법을 제안한다. 기존에 연구된 행위 기반 탐지 기법들이 특정 행위들을 특성치로 선정하여 분석하였다면, 본 논문에서는 모티베이션 이론을 적용하여 행위 분석을 수행하였다. 실제 MMORPG의 데이터를 분석하여 본 결과, 온라인 게임 내에서도 정상 사용자는 실제 세계와 마찬가지로 모티베이션과 관련된 ERG 이론이 잘 적용되는 것을 확인하였다. 반면에, 게임 봇은 정상 사용자와 다르게 특정 목적을 위한 행동 패턴이 나타나기 때문에 모티베이션 이론을 적용하여 탐지할 경우 정상 사용자와는 다른 행동 패턴을 보이는 것을 발견하였다. 이를 통해 ERG 이론을 적용한 봇 탐지 방법을 국내 7위의 규모의 게임에 적용하여 봇 제재 리스트와 교차 분석한 결과, 99.74% 의 정확도로 정상 사용자와 봇을 분류할 수 있었다.

• 대한수학회지
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• 제36권3호
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• pp.609-619
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• 1999

We give a mathematically rigorous description of the recently popular latent semantic indexing (LSI) method in text information retrieval theory. Also, a related problem of finding a document ranking function in linear relevance feedback is discussed.

• 정보관리학회지
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• 제23권3호
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• pp.127-146
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• 2006

본 연구는 이용자 중심 웹 정보탐색 분야의 실체이론을 분석함으로써 웹 정보탐색행위 영역의 통합이론 구축 가능성을 검토하고자 한다. 실체이론은 웹 이용자의 정보탐색행위를 설명하는 변인들 간의 유의한 관계를 밝히거나 이용자 행위를 일반화한 연구결과로 정의되었다. 1995년부터 2005년 사이에 네 종의 학술지에 출판된 이용자 중심의 웹 정보탐색 연구는 총 42편이었고, 이 중에서 10편이 실체이론 개발에 기여하였다. 분석결과, 13개의 종속변인과 10개의 독립변인이 다루어졌고 이 중 22개의 관계가 유의한 것으로 나타났다. 실체 이론의 대부분은 이용자의 개별적 차이에 초점을 두고 각기 다른 속성을 갖는 이용자의 웹 정보탐색행위를 설명하고자 하였으며, 이용자 행위의 일부 측면(검색행위, 탐색시간 등)만을 다루는 것이 특징이었다. 분석결과를 바탕으로 통합이론 구축을 위한 시사점이 제안되었다.

• The Journal of Korean Physical Therapy
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• 제22권2호
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• pp.55-60
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• 2010

Purpose: The purpose of this study was to use the theory of planned behavior, past habit and moral obligation to better understand the behavior of physical therapists (PTs) and occupational therapists (OTs) in protecting the medical information of patients. Methods: We conducted a survey using self-writting questionnaires structured within the framework of the theory of planned behavior to understand to analyze information from 103 clinical PTs and OTs in their efforts to protect patient medical information. Results: The PTs and OTs' medical information protecting behavior was 2.85 mean points. That point failed to reach 1.0 points. Behavior intention was 3.83 mean points. That was judged to be improved. Behavioral intention was closely correlated with behavior, behavioral attitude, subjective norms, behavior control, and past habit. Variables related to the theory of planned behavior, attitude, subjective norms, and perceived behavior control all explained 50% of the behavioral intention of PTs and OTs regarding future divulgence of patient information. The past habits of PTs and OTs were also a significant predictor in explaining the behavioral intention to protect a patient's medical information (p<0.01). Conclusion: Revising the behavioral attitudes, subjective norms, perceived behavior control, and past habits of PTs and OTs helped improve their behavior regarding protection of the medical information of patents.

• 한국도서관정보학회지
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• 제5권
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• pp.1-31
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• 1978

This thesis is to discuss and prove the identity of the acts of the library and the character of the library which regards these as its objects. And this study is analyzed in view of per ceptual problems and scientific problems and scientific problems, in order to make clear the character of the acts of the library. In these processes, some basic propositions are extracted. First, culture can be found in arranged order. Second, human being can create culture by the acquisition of accmulated culture. Third, an individual is purposely related with culture. Fourth, culture is antonomous to mankind. And in this thesis, library science is defined as the systematic formation of mankind's pursuing acts, and to identify this definition, some theoretical models of library science have been offered as follows : Model I 1. Theory of making culture assets informative. 2. Theory of making culture assets empirical; that of imformation treatment. 3. Theory of medial acts of librarians. Model II 4. Theory of organic systems of libraries. Model III 5. Theory of guiding school activities. 6. Theory of extending the inhabitants' interests of communities. 7. Theory of a kind of resources in social improvement. Model IV 8. Theory of a means of principal approach to the succession of culture. In conclusion, this study is to prove that acts of libraries are the universal ones of those human being that are gualified to be the unique means to the creation of culture and, library science is a science that shapes concepts and rules to describe, to make explanation and to foretell these acts.

• Journal of Information Science Theory and Practice
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• 제1권4호
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• pp.38-47
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• 2013

The proliferation of digital libraries (DL) in the twenty-first century has revolutionized the way information is generated and disseminated. This has led to various practical and research models of DLs. This paper discusses the concept and development of digital libraries, and examines various components and characteristics of DLs. It further identifies various models and theories of digital libraries with a special focus on the DELOS Reference Model and 5S Theory. The relationship between the two focused frameworks is analyzed for better understanding of their application in the DL universe.

• 한국정보시스템학회지:정보시스템연구
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• 제23권4호
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• pp.119-145
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• 2014

Under the premise that information privacy concerns can atrophy e-commerce by causing particular behaviors of Internet users, this study focused on exploring the causes of information privacy concerns, the related information privacy protective responses of Internet users, and measures for alleviating the information privacy concerns. This study is based on the 'principal-agent theory,' and established the following as factors that cause information privacy concerns of Internet users: perceived information non-transparency; perceived action uncertainty. Also, the information privacy concerns caused by the factors were established as the cause of information privacy protective responses of Internet users. Also, the concept of 'signaling' and 'incentive,' which were presented to solve the adverse selection and moral hazard issue in the host-agent theory, was introduced to establish the following as factors that alleviate information privacy concerns: trust; informativeness. Those factors were included in the research model to conduct an empirical analysis. The analysis has revealed that both the perceived information non-transparency (p<0.01) and perceived action uncertainty (p<0.01) as to websites had a significant impact on information privacy concerns. Also, information privacy concerns of Internet users (p<0.01) had a significant impact on their information privacy protective responses who strive to protect their personal information. In addition, when trust and informativeness, which were established as factors that can alleviate information privacy concerns, were empirically analyzed, trust and informativeness had the effect of alleviating information privacy concerns. Based on the findings, the following was confirmed: Boosting the trust of Internet users in websites and offering useful information related to personal data can play a key role in alleviating the information privacy concerns of Internet users.

• 유통과학연구
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• 제13권9호
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• pp.47-57
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• 2015

Purpose - The aim of this paper is to investigate the explanatory power of the Pecking-order theory (the cost of financing increases with asymmetric information) among Korean retail firms from the perspective of debt capacity. According to the Pecking-order theory, a firm's first preference is to use internal funds for its capital needs, its next preference is the issuance of debt, and its last preference is the issuance of equity; this is due to the information asymmetry problem between existing shareholders and investors. However, prior empirical studies, such as Lemmon and Zender (2010), argue that the entire sample test for the Pecking-order theory could be misleading due to the different levels of debt issuance capability of each of the individual firms; in fact, they confirm that the explanatory power of the Pecking-order theory improves after taking into account the differences in debt capacity of the U.S. firms they examined. This paper implements a case study approach among Korean retail firms to examine the relationship between debt capacity and the explanatory power of the Pecking-order theory in Korea. Research design, data, and methodology - This study uses the sample of public retail firms on the Korea Composite Stock Price Index (KOSPI) from the time period of 1990 to 2013. We gather related financial and accounting statements from the financial information firm WISEfn. Credit rating information is provided by the Korea Investor Service. We employ the models of Lemmon and Zender (2010) and Son and Kim (2013) to measure a firm's debt capacity. Their logit models use the rating dummy variable as a dependent variable and incorporate other firm characteristics as independent variables to estimate debt capacity. To test the Pecking-order theory, we adopt variants of the financing deficit model of Shyam-Sunder and Myers (1999). In the test of the Pecking-order theory, we consider all of the changes in total debt obligations, current debt obligations, and long-term debt obligations. Results - Our main contribution to the literature is our confirmation of the predicted relationship between debt capacity and the explanatory power of the Pecking-order theory among Korean retail firms. The coefficients on financing deficits become greater as a firm's debt capacity improves. This is consistent with the results of Lemmon and Zender (2010). The coefficients on the square of the financing deficits are also negative for the firms in the largest debt capacity group, which is also consistent with the predictions in prior literature. Conclusions - This study takes a case study approach by examining Korean retail firms. We confirm that the Pecking-order theory explains the capital structure of retail firms more appropriately, after taking into account the debt capacity of each firm. This result suggests the importance of debt capacity consideration in the testing of the Pecking-order theory. Our result also implies that there has been a potential underestimation of the explanatory power of the Pecking-order theory in existing studies.

• 디지털산업정보학회논문지
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• 제11권3호
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• pp.179-200
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• 2015

Recent national policies National Competency Standards(NCS) to develop teaching-oriented education in the field of industry and learning is taking place. Plan to take advantage of the Internet and multimedia classes, information and communication technology (ICT) for ways to leverage the integration appearing in various forms. The purpose of this study is causal influence on the ARCS motivation theory can determine the basic psychology of human motivation factors and the desires of a typical human nature theory dealing with the psychological needs of interactivity and immersion is learning achievement and learning transfer and to validate the demonstration. By applying information and communication technology sector in the development of learning in information and communication equipment training program modules from a field study conducted at the NCS with a clear empirical and empirical research through the synchronization to the learner and to explore the possibility of generalization.

• 한국정보시스템학회지:정보시스템연구
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• 제24권4호
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• pp.83-97
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• 2015

Purpose: Traditionally, information technology acceptance have been considered one of the most important research issues. However non-acceptance, which was main objective of acceptance theories, have not been included in main research area by communities of information systems. This study is to identify the factors influencing non-acceptance of information technology and suggest a total research model for explaining the phenomena of non-acceptance. Design/methodology/approach: Grounded theory was adopted as a principal research method. which is an inductive technique of interpreting qualitative data about a social phenomenon to build theories about that phenomenon. Data were collected by depth interview and open question on potential non-adopters during 3 months. The collected data were coded by two main coding paradigm in ground theory, open coding and axis coding. Findings: Factors influencing non-acceptance, status quo, imitation, value evaluation, and concerning risk were extracted from open coding. These factors were integrated into system 1 thinking and system 2 thinking, which were from axis coding. More specifically, status quo and imitation are system 1 thinking which are more responsive and emotional thinking and value evaluation and concerning risk are system 2 thinking which are more rational and reasoning thinking.