• Education of Primary School Mathematics
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• v.27 no.1
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• pp.91-110
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• 2024

The purpose of this study is to explore visual models for deriving the fractional division algorithm, to see how students understand this integrated model, the rectangular partition model, when taught in elementary school classrooms, and how they structure relationships between fractional division situations. The conclusions obtained through this study are as follows. First, in order to remind the reason for multiplying the reciprocal of the divisor or the meaning of the reciprocal, it is necessary to explain the calculation process by interpreting the fraction division formula as the context of a measurement division or the context of the determination of a unit rate. Second, the rectangular partition model can complement the detour or inappropriate parts that appear in the existing model when interpreting the fraction division formula as the context of a measurement division, and can be said to be an appropriate model for deriving the standard algorithm from the problem of the context of the inverse of a Cartesian product. Third, in the context the inverse of a Cartesian product, the rectangular partition model can naturally reveal the calculation process in the context of a measurement division and the context of the determination of a unit rate, and can show why one division formula can have two interpretations, so it can be used as an integrated model.

• The Transactions of the Korea Information Processing Society
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• v.4 no.4
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• pp.1035-1045
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• 1997

It is important to understand how we can deal with doements for the modeling of neural networks when we are unbestigating the dynamical performance and the information procoessing capabilitids.The information procewssing capabkities of model neural networks will change for different response, synaptic weights or learning rules. Using the staritical neurodyamics method, we evalute the capabikities of neural networks in order to understand the basic conept ofr parallel distributed processing. In this paper, we explain the reuslts of theoretical anaysis of the effests of the hysteretic property on the performance of wuquential associative neral networks.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.15 no.4
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• pp.19-24
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• 2015

Security has been a major concern in software development. Security tactics are reusable building blocks providing a general solution for recurring security concerns at the architectural level. They are often used together with architectural patterns which provide a general solution for architecting software systems. However, use of security tactics in architectural patterns has been understood only conceptually without concrete understanding of how their involved elements should be structurally and behaviorally co-designed. In this paper, we present model-driven analyses of security tactics in the context of Broker architectural patterns and provide evidences of the analyses in real world case studies.

• Proceedings of The KACE
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• 2017.08a
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• pp.209-211
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• 2017

기계학습은 인공지능(AI, Artificial Intelligence)의 일종으로 다른 인공지능 알고리즘이 정해진 규칙을 기반으로 주어진 임무(Task)를 해결하는 것과는 달리, 기계학습은 수집된 Data를 기반으로 최적의 솔루션을 학습한 후 미래의 값들을 예측하거나 해석하는 방법을 사용하고 있다. 더욱이 인터넷을 통한 연결성의 확대와 컴퓨터의 연산능력 발전으로 가능하게 된 Big-Data를 기반으로 하고 있어 이전의 인공지능 알고리즘에 비해 월등한 성능을 보여주고 있다. 그러나 기계학습 알고리즘이 Data를 학습할 때 학습 결과를 사람이 해석하기에 너무 복잡하여 사람이 그 내부 구조를 이해하는 것은 사실상 불가능하고, 이에 따라 학습된 기계학습 모델의 단점 또는 한계 등을 알지 못하는 문제가 있다. 본 연구에서는 이러한 블랙박스화된 기계학습 알고리즘의 특성을 이해하기 위해, 기계학습 알고리즘이 특정 입력에 대한 결과를 예측할 때 어떤 입력들로 부터 영향을 많이 받는지 그리고 어떤 입력으로부터 영향을 적게 받는지를 알아보는 방법을 소개하고 기존 연구의 단점을 개선하기 위한 방법을 제시한다.

• Korean Business Review
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• v.12
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• pp.83-102
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• 1999

People who are satisfied with tour sites will revisit those and recommend those to other people to visit. As a result, those tour sites will attract more tourists. The introduction of consumer satisfaction concept into tourism management is very critical for Kangwon province since tourism industry plays an important role compared with other industries. We investigate tour motives and influential factors in the tourist choice process theoretically and empirically. Empirical results show that "the importance of influence factors varies with tour motives," "the impact of tour-related factors on tourist satisfaction also different across tour motives," "tour motive itself is an important contributor to tour satisfaction." Therefore, this research develops a theoretical framework to understand the underlying motives, factors, satisfaction and discuss the results.

• Journal of the Korean Society for Library and Information Science
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• v.44 no.1
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• pp.181-198
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• 2010

In this paper, the necessity calling for a paradigm shift in information organization is summarized: an attempt is being made to move from a web of documents to a web of data. In this, the principles used to make a universal library network, as part of the semantic web, or linked data, are described. Popular RDF vocabularies are also briefly introduced emphasizing FRBR and RDA vocabularies. Some library-related linked data projects are also summarized, describing the steps necessary to make a library catalogue available as linked data, as well as a rationale for doing so. Lastly, proposed models for a universal library network focusing on linked data are suggested. Some implications for the use of library applications for linked data, among others, are also presented.

• Journal of The Korean Association of Information Education
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• v.2 no.2
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• pp.260-268
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• 1998

In this paper, I propose a metric model for measuring complexity of Web documentations which are wrote by HTML and XML. The complexity of Web documentation has effect on documentation understandability which is an important metric in maintenance and reusing of Web documentation. The understandable documents have more effect on WEI. The proposed metric uses the entropy to represent the degree of information flows between Web documentations. The proposed documentation complexity measures the information flows in a Web document based on the information passing relationship between Web document files. I evaluate the proposed metric by using the complexity properties proposed by Weyuker, and measure the document complexity. I show effectiveness of analyzing the correlation between the number of document file and document complexity.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.199-204
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• 2008

웹 2.0의 대표적인 형태로 관심을 받고 있는 RSS 서비스는 기술에 대한 이해가 바탕이 되어야만 사용할 수 있는 인터페이스를 기반하고 있기 때문에 사용자들의 이용이 저조한 현상이 나타나고 있다. 이러한 현상을 극복하기 위한 방안으로 정보 저장과 관리에 관한 사용자의 웹 브라우징 형태를 분석하여 유용성이 높은 유무선 통합 RSS 리더의 인터페이스를 연구하고자 히는 것이 이 논문의 목적이다. 실험을 통하여 사용자를 조사한 결과 웹 정보를 저장하고 관리하는 툴로 즐겨찾기를 가장 많이 사용하고 있으며 포탈서비스에 대한 의존도가 높게 나타났다. 이러한 분석을 토대로 사용자의 정보 저장과 보관에 대한 경험에 근거한 인터페이스 개발로 기술에 대한 거부감 해소와 유용성 높은 유무선 연동 RSS 리더 서비스 개발이 가능하리라고 판단된다. 또한 Push model 과 Pull model 의 자연스러운 공존을 통해 웹 1.0에서 2.0으로 이행하는 과도기적 모델로 활용할 수 있다. 이 논문을 통하여 웹 2.0 서비스 개발하는데 있어 현재 사용자들의 웹 사용 경험을 이해할 수 있는 자료로 활용될 수 있을 것이라고 예상된다.

• The Journal of the Korea Contents Association
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• v.7 no.6
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• pp.161-168
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• 2007

In this paper, we proposed the mathematics learning evaluation system between teachers and students using the web. The proposed web-based evaluation system lets learners make up their lesson in a self-oriented and effective way, by letting instructors diagnose learners level of understanding learned contents and letting learners take part in evaluation as well. The system also lets instructors easily make out items for evaluation by using hangul(word processor) and present them on the web. With the help of this web-based mathematics learning site and mathematics learning evaluation system, learners can perform self-oriented loaming and approach various kinds of problems. In addition, students can check with answers and have feedback on the spot. As a result, students can solve lack of understanding on the learned contents.

• Journal of the Korean Society for information Management
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• v.20 no.4 s.50
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• pp.91-111
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• 2003

This paper shows that digital libraries can be understood through STIN models which emphasize interactions among components in networks. The enrollment strategies in the American Memory make human and non-human factors interact. Specifically, this paper articulates that the relationships between users and collections, between users and staff, and between users and users are closely linked through the strategies . Observing the linkages among these components ,this paper found that the enrollment processes not only draw users to the American Memory, but also alter roles of components and creates new roles and players for them. The alterations of roles and the resulting changes of relationships among components mean that digital libraries lead to transform the grounding of knowledge works in a society.