• 대한수학교육학회지:수학교육학연구
• /
• 제11권1호
• /
• pp.113-121
• /
• 2001

The purpose of this paper is to investigate the significance and the role of intuitive model and the example of its development. Intuitive model is the tools of intuition in mathematics and the sources for the creative learning mathematics. It consists of the analogical model, paradigmatic model and diagrammatic model. Intuitive model must have a number features in order to be really useful as heuristic devices. It must present a high degree of natural, consistent and structural correspondence with the original. It must also correspond to human information processing characteristics and enjoy a relative autonomy with respect to the original. Sometimes, the difficulty in teaming mathematics stems from the abstractive characteristics of mathematics. So, we have to assist students' learning using the intuitive model that reveals the concrete representation and various changes of mathematical concepts, rules and principles.

• 한국디자인학회:학술대회논문집
• /
• 한국디자인학회 2001년도 Bulletin of The 5th Asian Design Conference International Symposium on Design Science
• /
• pp.37.1-37
• /
• 2001

• 한국자동차공학회논문집
• /
• 제22권6호
• /
• pp.31-38
• /
• 2014

The purpose of this study is to make virtual machine using a 3D modeller to perform reverse engineering. Through the intuitive designer's ability, approximated model of the object is created and used to extract the data and NC tool path. The extracted data make approximated curve by using NURBS curve fitting. And the curve is used to remodel. From these series of process, the final reverse engineering data of the objects can be obtained. Two conclusions are drawn from this study. First, initial deviation of the intuitive model is one of the important factors that determine the number of repetitions of the experiment. Due to the characteristic of intuitive curve, after a certain number of repetitions the average deviation increase and radiate rather than decrease.

• 한국수학교육학회지시리즈C:초등수학교육
• /
• 제12권1호
• /
• pp.1-20
• /
• 2009

초등학생들의 수학문제해결과정에서 나타나는 직관적 사고는 오류를 일으키기도 하지만 강력한 문제해결 방법으로 작용하기도 한다. 이에 초등학생의 문제 해결과정에서 나타나는 직관적 사고를 관찰하여 분석하여 다음과 같은 결론을 얻을 수 있었다. 첫째, 학생들은 문제해결 과정에서 문제의 계산 절차나 알고리즘을 알고 있는 경우, 직관적 사고에 의존하기보다는 알고리즘에 의한 풀이에 의존하려는 경향을 보였다. 둘째, 학생들은 직관적 사고를 통한 시각적 모델을 구안하여 문제를 해결하는 능력이 떨어지며, 시각적 모델을 사용하여 문제를 해결한다 하더라도 자신의 답에 대한 확신감이 떨어진다. 셋째, 문제해결 과정에서 직관적 사고와 논리적 사고 사이에 상호 보완관계가 나타났다. 넷째, 확률의 개념과 확률에 관한 문제해결 과정에서 학생들은 자신의 주관적 해석을 통한 인식론적 장애를 일으켰다.

• 한국경영과학회지
• /
• 제30권1호
• /
• pp.75-94
• /
• 2005

Research in the decision sciences has continued to develop a variety of mathematical models as well as software tools supporting corporate decision-making. Yet. in spite of their potential usefulness, the models are little used in real-world decision making since the model solution processes are too complex for ordinary users to get accustomed. This paper proposes an intelligent and flexible model-solver integration framework that enables the user to solve decision problems using multiple models and solvers without having precise knowledge of the model-solution processes. Specifically, for intuitive model-solution, the framework enables a decision support system to suggest the compatible solvers of a model autonomously without direct user intervention and to solve the model by matching the model and solver parameters intelligently without any serious conflicts. Thus, the framework would improve the productivity of institutional model solving tasks by relieving the user from the burden of leaning model and solver semantics requiring considerable time and efforts.

• 대한수학교육학회지:학교수학
• /
• 제4권2호
• /
• pp.205-222
• /
• 2002

In school mathematics, the negative numbers have been instructed using the intuitive models such as the number line model, the counting model, and inductive-extrapolation on the additionand multiplication and using inverse operation on the subtraction and division. Theseinstructions on the negative numbers did not present their formal nature and caused the difficulty for students to understand their operations because of the incomplete function of the intuitive models. In this study, we tried to improve such problems of the instructions of the negative numbers on the basis of the didactical phenomenological analysis. First of all, we analysed the nature of the negative numbers and the cognitive obstructions through the examination about the historic process of them. Second, we examined hew the nature of the negative numbers were analysed and described in mathematics. Third, we explored the improving directions for them on the ground of the didactical phenomenological analysis. In school mathematics, the rules of operations using the intuitive models of the negative numbers have been Instructed rather than approaching toward the nature of them. The negative numbers have been developed from the necessity to find the general solution of equations. The study tries to approach the operations instructions of the negative numbers formative]y to overcome the problems of those that are using the intuitive models and to reflect the formative Furthermore of the negative numbers. Furthermore, we examine the way of the instruction of the negative numbers in real context so that the algebraic feature and the real context should be Interactive.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제12권7호
• /
• pp.3284-3306
• /
• 2018

This study proposes a method to develop an authoring system(GeoMaTree) for diverse trees that constitute a virtual landscape. The GeoMaTree system enables the simple, intuitive production of an efficient structure, and supports real-time processing. The core of the proposed system is a procedural modeling based on a mathematical model and an application that supports digital content creation on diverse platforms. The procedural modeling allows users to control the complex pattern of branch propagation through an intuitive process. The application is a multi-resolution 3D model that supports appropriate optimization for a tree structure. The application and a compatible function, with commercial tools for supporting the creation of realistic synthetic images and virtual landscapes, are implemented, and the proposed system is applied to a variety of 3D image content.

• 로봇학회논문지
• /
• 제4권1호
• /
• pp.17-24
• /
• 2009

This work deals with an intuitive method for a planar biped to walk, which is named Relative Trajectory Control (RTC) method. A key feature of the proposed RTC method is that feet of the robot are controlled to track a given trajectory, which is specially designed relative to the base body of the robot. The trajectory of feet is presumed from analysis of the walking motion of a human being. A simple method to maintain a stable posture while the robot is walking is also introduced in RTC method. In this work, the biped is modeled as a free-floating robot, of which dynamic model is obtained in the Cartesian space. Using the obtained dynamic model, the robot is controlled by a model-based feedback control scheme. The author shows a preliminary experimental result to verify that the biped robot with RTC method can walk on the even or uneven surfaces.

• ETRI Journal
• /
• 제43권6호
• /
• pp.1081-1092
• /
• 2021

Electroencephalography (EEG) recordings taken during the perception of music tempo contain information that estimates the tempo of a music piece. If information about this tempo stimulus in EEG recordings can be extracted and classified, it can be effectively used to construct a music-based brain-computer interface. This study proposes a novel convolutional recurrent attention model (CRAM) to extract and classify features corresponding to tempo stimuli from EEG recordings of listeners who listened with concentration to the tempo of musics. The proposed CRAM is composed of six modules, namely, network inputs, two-dimensional convolutional bidirectional gated recurrent unit-based sample encoder, sample-level intuitive attention, segment encoder, segment-level intuitive attention, and softmax layer, to effectively model spatiotemporal features and improve the classification accuracy of tempo stimuli. To evaluate the proposed method's performance, we conducted experiments on two benchmark datasets. The proposed method achieves promising results, outperforming recent methods.

• 한국지역지리학회지
• /
• 제9권2호
• /
• pp.135-152
• /
• 2003

본 연구의 목적은 복잡하고 구조화되어 있지 않은 현실의 문제를 체계적으로 조직 평가하여 최적의 해결책을 찾을 수 있는 방법으로 가치판단에 기초한 의사결정 모형과 기준과 대안을 평가할 개념적 틀을 제시하고 이것을 대학생의 미래주택 선택에 적용하는 데 있다. 미래주택 선택을 위한 모형을 수립하기 위한 설문시 조사에 따르면 대학생들은 주택 선택의 기준으로 주택 자체의 특성보다 주택과 관련된 지역의 사회 경제 환경 특성을 중요시하고 있다. 일반적 기준의 관점에서 대학생들은 사회 교육, 접근성, 경제, 시설, 자연환경 그리고 주택 특성 순으로 중요도를 평가하고 있으며, 중요도 간의 차이는 의미 있는 것으로 나타났다. 분석적 평가 방법에 의한 대학생들의 주택 선호도는 아파트, 단독주택 그리고 연립주택 순으로 나타났지만 세부기준의 관점에서의 주택 선호도는 다양하게 변화하고 있다. 이것은 세부적 기준의 관점에서 이루어지는 가치판단은 일반적 관점에서보다 복잡하고 역동적으로 변화하는 것으로 이해되어야 할 것이다. 계층분석법(AHP)을 이용한 세부 기준들의 중요도 순위는 동일 기준에 대한 직관적 판단의 결과와 거의 일치하고 있다. 그러나 일반적 기준들에 대한 두 가지 분석 방법의 적용 결과는 상당한 차이를 보이고 있다. 결론적으로 본 연구에서 제시한 의사결정 모형과 평가 방법에 관한 개념적 틀은 불확실성과 위험이 내포된 다양한 현실 문제에 실용적으로 적용될 수 있으며, 지속적인 수정 보완을 통해 효용성도 높아질 것이다.