• Korean Journal of Logic
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• v.18 no.1
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• pp.133-153
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• 2015

In his paper "Structural Equations Approach to Token Causation: The Active Route Account Revisited" Professor Sungsu Kim defends the active route account. The active route account is the theory of causation which overcomes counterexamples to the counterfactual theories of causation, while maintaining the counterfactual theorist's essential intuition that an effect depends counterfactually on a cause. Unfortunately, there are counterexamples to the active route account itself. Professor Sungsu Kim attempts to defend the active route account by rebutting those counterexamples. In this paper, I argue that his defense of the active route account is not successful.

• Proceedings of the Korea Contents Association Conference
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• 2005.11a
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• pp.29-35
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• 2005

Psychoanalytical film theory promoted by Metz supplied theoritical base in analyzing the effects of mass culture to subject. This theory may be also applied to computer games, so that we would promote studies in depth about game critics and game culture. In this article, first inspected the theories of Freud and Lacan and then examined the psychoanalytical film theory by Metz and Baudry. Computer games analyzed by the frame of artificial regression, first identification and concealment of marks of enunciation. As a result, computer games appeared that deeply effect to the subject similarity cinema.

• 한국정보교육학회:학술대회논문집
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• 2009.08a
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• pp.241-248
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• 2009

학생들의 기초 기본학습 능력의 신장이 강조되고 있는 교육상황에 비추어 볼 때 지금까지 간과되어 왔던 학습장애에 대한 재인식과 학습장애아들을 위한 대책이 필요하다. 그 대책으로 최근 특수교육분야에서 기존의 지능-불일치 교육이론에 대한 대안으로 제시되고 있는 중재-반응 (Responsiveness to Intervention : RTI) 이론을 기반으로 학습장애아들에 대한 교육이 보다 효율적으로 적용될 수 있다. 하지만 실제 우리의 교육에 적용을 위해서는 많은 걸림돌들이 존재하고 있다. 실제 교육 현장의 교사들이 RTI 이론 적용의 걸림돌로 제기하는 점들을 해결하기 위한 대안으로 모바일 시스템설계를 통해 실제 현장에서의 RTI 이론 적용 및 실행 가능성을 높이고자 한다. 본 시스템의 특징은 첫째, 실제 국내의 교육현장에서 기존 교사들이 제시한 RTI 이론 적용가능성이 낮은 항목들을 중점으로, 이론 적용의 문제점을 해결하기 위한 설계에 중점을 두고 있다. 둘째, 시스템의 구성을 기존의 행정중심이 아닌 실제 수행자 중심 설계를 위하여 기존의 학교행정가를 제외한 일반교사, 특수교사, 학부모, 학습장애 학생으로 설계하였다. 셋째, 일반교사, 특수교사, 학부모, 학습장애 학생의 의사소통 및 진전도 체크 등을 모바일 기기의 편이성과 결합하여 학습장애아의 학습능력을 향상시키고자 한다.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.16 no.2
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• pp.211-221
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• 2018

Nodal transport methods are proposed for solving the simplified even-parity neutron transport (SEP) equation. These new methods are attributed to the success of existing nodal diffusion methods such as the Polynomial Expansion Nodal and the Analytic Function Expansion Nodal Methods, which are known to be very effective for solving the neutron diffusion equation. Numerical results show that the simplified even-parity transport equation is a valid approximation to the transport equation and that the two nodal methods developed in this study also work for the SEP transport equation, without conflict. Since accuracy of methods is easily increased by adding node unknowns, the proposed methods will be effective for coarse mesh calculation and this will also lead to computation efficiency.

• Proceedings of the KIEE Conference
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• 2001.07d
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• pp.2744-2746
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• 2001

이 논문에서는 이동 로봇을 위하여 퍼지이론과 Dempster-Shafer 이론을 이용한 불확실한 환경에서의 센서기반 네비게이션 방법을 제안한다. 제안된 제어기는 장애물 회피 동작과 목적지 찾기 동작을 위한 2개의 행동 모듈로 구성되어 있다. 2개의 행동 모듈은 각각 퍼지 이론으로 학습되었고, 적절한 행동 선택 방법으로 선택되게끔 하였다. 견고한 퍼지 제어기를 가진 로봇이 실험 환경내에서 안전하게 움직이기 위하여 자동으로 지도를 구축(Map Building) 하도록 하였다. 이 실험에서 구성된 맵은 평면상의 격자를 중심으로 작성되었고 로봇의 센서에서 읽어들인 센서 값은 D-S 추론 이론을 이용하여 기존의 맵과 혼합되어진다. 즉, 로봇이 움직일때 마다 실험 환경내에서 새로운 정보를 읽어 들이고, 그 정보로 인하여 기존의 지도가 새로운 지도로 갱신되는 것이다. 이러한 작업을 거치면서 로봇은 장애물과 충돌없이 배회하는 것 뿐 아니라 설정된 목적지까지도 쉽게 찾아갈 수가 있다. 실험에 대한 안정성과 확신을 검증 받기 위하여 실제 로봇에 적용하기보다는 먼저 이동 로봇의 시뮬레이션으로 실험 해 보고자 한다.

• Journal of the Korean Society of Clothing and Textiles
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• v.32 no.12
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• pp.1971-1980
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• 2008

The purpose of this study is to explore the meaning and depth of traditional knitwears, and to develop knitwear designs by using Aran motif, one of major motifs of traditional knitwears and on the basis of the 'continuance' theory of Henri Bergson and Jill Deleuze. Connectivity, the sense of space and deconstructive fluidity-basic concepts of the continuance theory-are felt in such forms as pleats, origami, and air pumping systems, blob and twisting used in the modem fashion. The motif of Aran knitwear which has a long historical tradition can be reinterpreted in terms of those concepts of the continuance theory. In this study, we designed five pieces of knitwear while applying cable motif, an important motif of Aran knitwear, and the concepts of the continuance theory to them. This study will make a contribution to the designing of knit wears through reinterpretation of a traditional motif in terms of a modem philosophical thought.

• The Korean Journal of Applied Statistics
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• v.19 no.3
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• pp.481-504
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• 2006

VaR, a tail-related risk measure is now widely used as a tool for a measurement and a management of financial risks. For more accurate measurement of VaR, recently we are particularly concerned about the approach based on extreme value theory rather than the traditional method based on the assumption of normal distribution. However, many studies about the approaches using extreme value theory was done only for the univariate case. In this paper, we discuss portfolio risk measurements with modelling multivariate extreme value distributions by combining copulas and extreme value theory. We also discuss the estimation of ES together with VaR as portfolio risk measures. Finally, we investigate the relative superiority of EVT-copula approach than variance-covariance method through the back-testing of an empirical data.

• The Korean Journal of Food And Nutrition
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• v.13 no.4
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• pp.353-359
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• 2000

This study was carried out to introduce the fuzzy theory to standardize recipe of Korean foods, such as Pibimbab, Deonjang chigae (soybean stew), and Kimchi chigae (Kimchi stew). That is recipe of Pibimbab using fuzzy theory. Before this recipe was introduced, it thoroughly analyzed a number of data on Korean food such as materials used by cook book, commercial food, restaurants, food service operation recipes, and home recipes. And then the recipe of Korean food, Pibimbab will be possible to be standardized by fuzzy theory. The theory of fuzzy set is a theory of graded concept. The theory has matured into a wide ranging collection of concepts and techniques for dealing with complex phenomena. It defined a Membership function of fuzzy set by analyzed four sorts of data on Korean food, Pibimbab, and it established the fuzzy model using the quantity of materials as input and sensory test scores as output. This study will contribute to develop standard recipe for Korean foods and expert system of recipes using computer system.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.42 no.3
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• pp.243-253
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• 2014

This paper deals with the Quantitative Feedback Thoery(QFT) guaranteeing robustness in spite of the plant parametric uncertainty. In the frequency domain, the QFT guarantees the robustness of the design specification on the uncertainty of plant parameters and disturbance. In order to use the QFT, a selected plant is a Quad Rotor Vehicle(QRV) which has excellent maneuverability and possibility of vertical take-off and landing like the helicopter. And attitude control is examined the possibility satisfied the requirement specification under the setting parametric uncertainty of motors driving 4-blades. Additionally, in an attitude control, the pre-filter considering parameter range and operating range of a QRV was used. For these purpose, in this paper, by using QFTCT, that is the QFT Control Toolbox designing the controller in MATLAB by the QFT, each design phases are introduced.

• Journal of Korean Society of Transportation
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• v.22 no.7 s.78
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• pp.71-78
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• 2004

This paper presents a game-theoretic model of information transmission for variable message sign(VMS) operations. There are one VMS operator and many drivers as players. Operator wants to minimize the total travel time while the drivers want to minimize their own travel time. The operator who knows the actual traffic situation offers information strategically. The drivers evaluate the information from operator, and then choose the route. We model this situation as a cheap-talk game which is a simplest form of Bayesian game. We show that there is a possibility that the operator can improve the traffic efficiency by manipulating the electric signs at times. Indeed, it is an equilibrium of the game. This suggests that the operator must consider the strategic use of VMS system seriously.