• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.05a
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• pp.677-678
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• 2017

Currently, vocational high schools are trying to learn through project learning and similar courses. This is to nurture talented students who can be directly involved in the industrial field. In this study, we modified the existing ADDIE model, designed the model for the class, and operated the actual augmented reality programming class to verify the validity. As a result of the operation, the learners' satisfaction and achievement were high, and the ability to solve the problem was improved as it was developed in the actual field. In this study, it is meaningful to develop a teaching model closely related to the field through the project learning using the augmented reality programming.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.3
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• pp.500-506
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• 2007

The Type Object Design Pattern is proposed to provide a solution on the situation in the case that one class has too many subclasses or the number of subclasses are undefined. Although this pattern has many advantages in terms of applicability and dynamic object behavior, it has a weak point in runtime pattern operation that it has to build and maintain a class reference mechanism in runtime to reference the class (de facto 'object') of instances. To solve that problem, this paper addresses the solution of the runtime class reference problem of Type Object Pattern. it defines a new class of Type Object Class (TOC) from Type Class and Object Class in Type Object pattern and presents the methods of creating, compiling, and memory-loading the TOC. It depends on built-in class reference mechanism of object-oriented programming language, and is not necessary to fit with the additional mechanism. Consequently, we need not to set up the additional class reference mechanism and system performance is enhanced due to it.

• Journal of the Chungcheong Mathematical Society
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• v.29 no.3
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• pp.465-475
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• 2016

We establish necessary and sufficient optimality conditions for a class of generalized nondifferentiable fractional optimization programming problems. Moreover, we prove the weak and strong duality theorems under (V, ${\rho}$)-invexity assumption.

• Journal of applied mathematics & informatics
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• v.28 no.5_6
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• pp.1535-1544
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• 2010

Sufficient optimality conditions for a class of generalized non-differentiable fractional optimization programming problems are established. Moreover, we prove the weak and strong duality theorems under (V, $\rho$)-invexity assumption.

• Journal of Digital Convergence
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• v.10 no.9
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• pp.449-456
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• 2012

The college students who have relatively weak academic background feel more difficult in learning programming language grammars and programming skills in introductory course. At the end of semester, most of students had the negative attitude to programming and only a few students could write the programs for the given problems because they spent most of time to learn grammars instead of learning problem solving skills and logics. In this study, we propose to use Scratch in introductory programming course to help students to understand grammars and problem solving skills. It's necessary to educate first-time programmers how to solve the problems before they learn grammars of the programming language in their first programming language course. This paper shows that Scratch allows students not only to learn problem solving skills in programming but also to motivate students themselves in the class.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.3 no.1
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• pp.100-104
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• 2003

The SVDD(support vector data description) is one of the most well-known one-class support vector learning methods, in which one tries the strategy of utilizing balls defined on the kernel feature space in order to distinguish a set of normal data from all other possible abnormal objects. The major concern of this paper is to consider the problem of modifying the SVDD into the direction of utilizing ellipsoids instead of balls in order to enable better classification performance. After a brief review about the original SVDD method, this paper establishes a new method utilizing ellipsoids in feature space, and presents a solution in the form of SDP(semi-definite programming) which is an optimization problem based on linear matrix inequalities.

• East Asian mathematical journal
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• v.38 no.4
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• pp.463-496
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• 2022

The purpose of this study is to analyze the mathematical creativity and computational thinking of mathematically gifted elementary students through a convergence class using programming and to identify what it means to provide the convergence class using Python for the mathematical creativity and computational thinking of mathematically gifted elementary students. To this end, the content of the nine sessions of the Python-applied convergence programs were developed, exploratory and heuristic case study was conducted to observe and analyze the mathematical creativity and computational thinking of mathematically gifted elementary students. The subject of this study was a single group of sixteen students from the mathematics and science gifted class, and the content of the nine sessions of the Python convergence class was recorded on their tablets. Additional data was collected through audio recording, observation. In fact, in order to solve a given problem creatively, students not only naturally organized and formalized existing mathematical concepts, mathematical symbols, and programming instructions, but also showed divergent thinking to solve problems flexibly from various perspectives. In addition, students experienced abstraction, iterative thinking, and critical thinking through activities to remove unnecessary elements, extract key elements, analyze mathematical concepts, and decompose problems into small components, and math gifted students showed a sense of achievement and challenge.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.641-643
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• 2022

COVID-19로 인해 대학 수업 운영에도 많은 변화가 생겼고 현재도 다양한 수업 방식이 시도되고 있다. 특히 컴퓨터 프로그래밍과 같이 실습이 중요한 비중을 차지하는 교과목들은 대면수업이 더 효과적일 것이라고 많은 교수자들이 생각하고 있다. 본 연구진 역시 사전에 그런 인식을 가지고 연구를 진행하게 되었다. 그러나 예상했던 것보다 비 대면이나 혼합 방식의 수업을 선호하는 학생들의 비중이 꽤 컸으며 그 이유도 매우 구체적이고 다양하였다. 본 연구에서는 대면, 비대면, 혼합 방식의 수업을 모두 경험한 컴퓨터공학과 전공 수업 참여 학생들을 대상으로 효과적인 프로그래밍 수업 방식에 관한 설문을 실시하고 그 결과를 분석해보았다. 이 연구의 결과는 post COVID 19의 시대를 살아가면서 COVID 19으로 인해 생긴 대학 수업의 변화와 요구들을 수업 운영에 좀 더 긍정적으로 활용하는 기초가 될 것으로 생각한다.

• Journal of information and communication convergence engineering
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• v.9 no.1
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• pp.21-26
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• 2011

In this paper, we suggest the object-oriented methodology for the design and implementation scheme for the program development in the application of control and instrumentation such as the detection system of RFID defective tags which needs the embedded programming. We apply the design methodology of UML in the system design phase, and suggest the implementation scheme of LabVIEW programs using LVOOP(LabVIEW Object Oriented Programming)in which make it possible to write the object-oriented programming. We design the class diagram and the sequence diagram using UML, and write the classes of LVOOP from the designed class diagram and the main VI from the sequence diagram, respectively. We show that it is possible to develop the embedded programs such as the RFID application through the implementation example of the detection system of RFID defective tags in this paper. And, we obtain the advantages based on the object-oriented design and implementation using the LVOOP approach such as the development of LabVIEW programs by adding the classes and the concept of object of the object-oriented language to LabVIEW.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.05a
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• pp.349-351
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• 2022

In this study, a programming class plan was designed for artificial intelligence education in technical high schools such as specialized high schools and Meister high schools. In elementary and middle schools or general high schools, it is not easy to secure the number of hours, so it is not easy to proceed with a lot of content and in-depth content. In addition, technical high schools have a good environment for nurturing human resources in the field of artificial intelligence. For this purpose, existing researches related to artificial intelligence education were explored, and programming classes related to artificial intelligence education were grafted into the units of the existing engineering high school programming classes.