• 대한수학교육학회지:수학교육학연구
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• 제8권1호
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• pp.351-364
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• 1998

This thesis analyzes the nature of proof in the perspective on the philosophy of mathematics. such as absolutism, quasi-empiricism and social constructivism. And this thesis searches for the improvement of teaching proof in the light of the result of those analyses of the nature of proof. Though the analyses of the nature of proof in the perspective on the philosophy of mathematics, it is revealed that proof is a dynamic reasoning process unifying the way of analytical thought and the way of synthetical thought, and plays remarkably important roles such as justification, discovery and conviction. Hence we should teach proof as a dynamic reasoning process unifying the way of analytic thought and the way of synthetic thought, avoiding the mistake of dealing with proof as a unilaterally synthetic method. At the same time, we should make students have the needs of proof in a natural way by providing them with the contexts of both justification and discovery simultaneously. Finally, we should introduce the aspect of proof that can be represented as conviction, understanding, explanation and communication to school mathematics.

• Communications for Statistical Applications and Methods
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• 제9권2호
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• pp.425-434
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• 2002

In this paper, we evaluated the technological forecasting based on questionnaires of experts working in internet-banking industry. We prepared questionnaires on the 13 items. We examined specialties of respondents, relative importance of research contents, expected time of realization, likelihood of conviction on the expected time of realization, and their opinions on the levels of domestic's research and development comparing with advanced standards on each item. And we made various analysis based on data collected from Delphi method.

• 한국실내디자인학회논문집
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• 제20호
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• pp.48-55
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• 1999

The western architecture is being transformed with the utmost rapidity in the 0th century. The architectural culture is strongly influenced by various thoughts and views on life of people. And then it would reflect the sprit of the same times. Architects have much imaginations that tend to limit of the present at a glance. However, if we observe these imaginations in detail, we can find that th4eir imaginations are based on not only the utopian conceptions but abstract theories. And above all, these imaginations are an energy of conflict between the endless asking and the conviction against the traditions and history. The most of architects consider their ideology and conviction as a whole. Furthermore they regard the wall as a element of architecture and attempt to persuade the people through making the realizatiov. In order to understand more easily the architectural characteristics, it is the best way to see the architecture at the high of our eyes. That is the reason why the wall was chosen as a element of architecture. I would like to emphasize the architects who were the representative in their ages and their works that are based on the conceptions at that time. However, I didn't refer to make a comparison with qualities of them anywhere of this study. Because it is necessary that we should be accepted the architectural paradigm as a matter of course.

• Communications for Statistical Applications and Methods
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• 제21권5호
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• pp.387-393
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• 2014

Recurrent gap times are analyzed with diverse methods under several assumptions such as a marginal model or a frailty model. Several resampling techniques have been recently suggested to estimate the covariate effect; however, these approaches can be applied with a time-fixed covariate. According to simulation results, these methods result in biased estimates for a time-varying covariate which is often observed in a longitudinal study. In this paper, we extend a resampling method by incorporating new weights and sampling scheme. Simulation studies are performed to compare the suggested method with previous resampling methods. The proposed method is applied to estimate the effect of an educational program on traffic conviction data where a program participation occurs in the middle of the study.

• 한국멀티미디어학회논문지
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• 제7권2호
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• pp.211-222
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• 2004

무선 이동 통신의 발전으로 인해 많은 사용자가 증가하였다. 1세대나 2세대의 경우 이동통신서비스는 기본적으로 음성과 문자를 기반으로 서비스를 하였기 때문에 멀티미디어 서비스와 같은 고속 무선 인터넷 통신 수요자의 요구를 충족시키지 못하였다. 하지만 최근에는 음성 위주의 서비스가 아닌 고용량의 데이터와 멀티미디어 서비스, 위치 기반 서비스 등을 제공하고 있다. 서비스와의 발달과는 다르게 보안상에서는 문제점을 가지고 있다. 무선망은 전송로가 노출되어 있어 정당하지 않는 사용자에 의한 불법적인 절취 사용과 도청 등에 많은 문제점이 발생할 수 있다. 이와는 다르게 서비스 측면에서도 문제점이 발생할 수 있다. 이러한 예로 다음을 들 수 있는데, 악의적인 제 3의 사용자가 공유되어 있는 문서 접근에 따른 문제점이 발생할 수 있으며, 양자간의 계약 혹은 과금 정보에 있어 악의적인 행위가 발생될 수 있는데 이에 대한 행위를 막을 방법이 필요하다. 위와 같은 악의적인 행위에 대한 해결책으로써 문서에 대한 내용증명과 시점확인이 필요하게 된다. 이에 본 논문에서는 악의적인 행위나 문제점을 해결하고자 유선에서 사용 중에 있는 시점 확인 서비스 혹은 내용 증명 서비스를 향후 발전할 IMT-2000에 적용하여 보았다. 제안한 방식은 IMT-2000의 기반 구조를 그대로 이용하면서 데이터의 보안에 있어 효율적인 방식을 제안하였다.

• 응용통계연구
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• 제23권4호
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• pp.715-724
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• 2010

재발 사건 자료(recurrent event data)는 연구 대상이 같은 종류의 사건을 여러 번 경험할 때 발생되는 자료 형태이다. 재발 사건간에 연관관계를 위해 프레일티가 사용된다. 프레일티 효과는 랜덤효과의 한 형태로 개인별 특성을 표현하기 위해 생존 분석에서 널리 적용되어 왔다. 본 논문에서는 이러한 개인별 효과가 시간에 따라 변할 수 있음을 가정하여 시간 가변 프레일티를 적용한다. 본 논문에서는 적용 사례로 범죄 재범 자료를 분석한다. 특히 일부 관측 대상들은 일정 기간 동안 연구에서 제외되는 불연속성을 경험하게 되며 이는 위험그룹(risk group)의 새로운 정의가 필요하다. 모수 추정을 위해 조각 상수 위험 함수가 사용되며 EM 알고리즘이 적용된다.

• 한국실내디자인학회논문집
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• 제26권1호
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• pp.63-74
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• 2017

This study is for the characteristic of expression of exhibition presentation in 'The Korean peninsula' which is the Golden Lion Winner at the Venice Biennale in 2014. The Korean peninsula provides two opposite political and economic systems and adaptations of modernism through various multi media images. The curator, Minsuk Cho, presented cinema montage image of Collision for analyzing dynamic exhibition organization and provides the foundation of his theory from Bergson's image and duration to Deleuze's movement-image and time-image which is mentioned from Deleuze's book "cinema 1" and "cinema 2". Furthermore, the Korean peninsula has showed perception-image and affection-image from Eisenstein & Vertov's cinemathology and systemized exhibition presentation. The montage of Collision has maximized the movement from the variety and complexity in a collision and it made difference between information images which are space, time, emotion, intelligence, the tumult between subjectivity and objectivity, fragments from reorganizing itself, and distribution and art images. The limit of montage of Collision's dialectic is not only visual but also space from organic organization but the Korean peninsula overcomes its limit and shows leap of tactile perception and time-reflection from the montage of Collision's dialectic. Therefore, the exhibition of the Korean peninsula presents the conviction of adaptations of modernism.

• 한국유기농업학회지
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• 제24권4호
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• pp.627-644
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• 2016

Organic agriculture at Hongdong began with the conscious efforts of farmers who were influenced by Japanese experience and the environmental degradation by conventional agriculture in the mid-1970s. Based on their strong conviction, even though the lack of organic technique and information, those farmers started to implement organic agriculture which was beyond the production increase policy at that time. The solidarity among farmers could establish the foundation of organic agriculture through undergoing trial and error. Substantively interchange and communication between farmers and consumers played a prominent role to strengthen the organic agriculture at Hongdong as well.

• 대한간호학회지
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• 제34권8호
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• pp.1416-1426
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• 2004

Purpose. The purpose of this study is to identify the role adaptation process experienced by head nurses. Methods. Data were collected from 10 head nurses with in-depth interviews about their actual experiences. All the interviews were recorded and transcribed. The collected data were analyzed by the grounded theory methodology of Strauss and Corbin. Results. The core category was identified as 'weighing and balancing,' and the role adaptation process was divided into six stages by time sequence: inquiring, approaching to others, bringing people into their fold, working with conviction, avoiding conflicts, and settling. Conclusion. The results of this study yield useful information for top mangers of nursing to identify, by stages, the demands of the head nurses in their role adaptation process. The findings of this study contributes to developing programs that facilitates the head nurses' role adaptation.

• 한국정보보호학회:학술대회논문집
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• 한국정보보호학회 2001년도 종합학술발표회논문집
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• pp.60-63
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• 2001

무선 이동통신의 발전으로 인해 많은 사용자가 발생하였다. 그러나 1세대나 2세대의 경우 이동통신서비스는 기본적으로 음성을 기반으로 서비스를 하였기 때문에 다른 멀티미디어 서비스와 같은 고속 무선 인터넷 통신 수요자의 요구를 충족시키지 못하고 있다. 향후 무선에서 음성위주의 서비스가 아닌 데이터와 이동 멀티미디어 서비스와 같은 서비스를 통해 얻을 수 있다. 하지만 무선망은 전송로가 노출되어 있어 정당하지 않는 사용자에 의한 불법적인 절취 사용과 도청등에 많은 문제점이 발생할 수 있다. 악의적인 제 3의 사용자가 공유되어 있는 문서에 대한 문제점뿐만 아니라 양자간의 계약 혹은 과금 정보에 있어 악의적인 목적을 막는 방법이 필요하다. 다음과 같은 방법에 대한 해결책으로써 문서에 대한 내용증명과 시점확인이 바로 그것이다. 본 논문에서는 앞에서 언급한 문제점을 해결하고자 유선에서 사용중에 있는 시점확인 서비스 혹은 내용 증명 서비스를 향후 발전할 IMT-2000에 적용하여 보았다. 제안한 방식은 IMT-2000에서의 개체를 그대로 이용하면서 효율적인 방식을 제안하였다.