• Journal of applied mathematics & informatics
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• v.16 no.1_2
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• pp.91-104
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• 2004

A modification of the gradient method of convex programming is introduced. Also, we describe symbolic implementation of the gradient method and its modification by means of the programming language MATHEMATICA. A few numerical examples are reported.

• The Journal of Korean Association of Computer Education
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• v.20 no.1
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• pp.1-11
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• 2017

As an emphasis has been put on the importance of computational thinking, universities have opened software educational programs as required basic courses.. Therefore this study aimed to examine non-major students' perceptions of programming before and after they had programing education. To this end, this study performed programming education for 15 weeks using the Scratch programming language, and then conducted a questionnaire survey. This study analyzed responses from 214 students. According to the results of the analysis, 74 % of the non-major students had no previous experience with programming, 87% felt that programming was difficult, and 69.7% answered that they did not need programming education. To change these negative perceptions of programming, this study made the following suggestions. First, the professor should clearly convey the needs, purposes, and content of programming education to students prior to class. Second, programming should be designated as an optional course rather than required one. Third, it is necessary to develop content integrated with majors, or educational programs or content connected to getting a job or starting a business.

• The Journal of Korean Association of Computer Education
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• v.20 no.4
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• pp.27-36
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• 2017

The purpose of this study is to design and implement an instructional model for flipped learning of programming class. Because a programming process requires a high level of abstract thinking with a good understanding of a programming language, many students have difficulty in programming. For this characteristic of programming, it is not easy to effectively achieve learning goals of programming lesson by lecturing grammatical elements of a programming language and the following examples in a limited class time. In order to overcome these problems and to make effective programming lessons, we designed an instructional model based on flipped learning. Especially, in this study, we analyzed learners' difficulties in programming learning and errors that occurred in actual programming process for designing the instructional model. As a result of applying this model to the class, it was found that the students were generally satisfied with the lesson by having positive communication with other students in the classroom and actively participating in the learning.

• Journal of The Korean Association of Information Education
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• v.23 no.4
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• pp.303-314
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• 2019

Since 2019, the informatics education is being conducted for elementary school 5th, 6th grade students through the curriculum revised 2015. But, informatics education is implemented from the lower grades of elementary school in many countries. The purpose of this study was to suggest the direction in the choice of programming language considering characteristics for lower grades student. In order to achieve the goal, evaluation criteria were developed considering the development characteristics of lower grades and necessary elements of educational programming language. The results of analyzing the usability of the two languages based on the criterion are as follows. First, Viscuit can be used to consider the expressive power of students with lower school age or to learn algorithms without learning about programming concepts. Second, ScratchJr is easy to learn the concept of algorithm and programming. This study is meaningful in that has presented implications considering the developmental state of the students in preparation for rhe programming education.

• The Journal of Korean Association of Computer Education
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• v.22 no.6
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• pp.1-10
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• 2019

As the 2015 revised curriculum is implemented and the software education is emphasized, the education field demands more informatics teachers with computational thinking and programming skills. In this thesis, we have studied ways to improve the practical evaluation of informatics·computer teacher-appointment test so that a preliminary teacher can be selected through the evaluation of programming skills. We analyzed existing informatics·computer appointment tests and conducted questionnaires for professors and teachers to suggest improvement and expansion of practical skill evaluation. According to the results from the questionnaire, 88% of the respondents answered that expanding the evaluation of programming practice is necessary. In the questionnaires regarding the programming language, the number of questions, and the test time, the highest response rate was C language(51%), 5 questions(66%) and 2 hours(56%).

• The Journal of Korean Institute of Communications and Information Sciences
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• v.18 no.2
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• pp.239-249
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• 1993

In this paper, we present a design and implementation of Hangul C Programming language corresponding to Turbo C. The instruction of Hangul C were selected to be easily understood by elementary middle, high school students, and DOS commands and error message were translated into the Hangul.

• Proceedings of the Korean Information Science Society Conference
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• 2007.10c
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• pp.540-545
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• 2007

프로그램 검증은 가능한 모든 경우에 대하여 안정성을 확인하는 작업이다. reactive 프로그램을 외부환경에 대한 정보 없이 검증하면 실제로 가능하지 않은 경우를 오류로 찾을 수도 있다. 본 논문에서는 observer를 이용한 기존의 ESTEREL 프로그램 검증 기법에 외부환경에 대한 가정을 추가하는 방법을 소개하고. 사례연구를 통해 외부환경을 고려하여 검증하는 과정을 보인다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2017.07a
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• pp.73-74
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• 2017

4차 산업혁명의 핵심 중 하나인 소프트웨어 교육에서 프로그래밍 교육은 필수적이다. 다양한 프로그래밍 언어 중 프로그래밍 입문자를 위해 적합한 언어를 선택하는 것은 매우 중요하다. 본 논문에서는 프로그래밍 입문을 위해 적합한 언어를 선택하기 위한 가이드를 제공하기 위해 2017학년도 1학기에 프로그래밍 입문 관련 교과목을 수강한 학생들을 대상으로 프로그래밍 언어에 대한 선호도를 조사하고 분석하여 언어 선택을 위한 가이드를 제안한다.

• Journal of KIISE:Software and Applications
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• v.37 no.5
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• pp.370-377
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• 2010

An Intelligent service robot performs various complex tasks in dynamic environment, providing useful intelligent services for human users. The robot needs to continuously monitor dynamically changing environment and reactively choose the best behavior for the changing context. The selected behaviors may include nondeterministic or parallel actions. In this paper, we present a structured reactive robot programming language, SPRIT that is based on Structured Circuit Semantics (SCS). SPRIT is fully implemented as a task executor and tested for reactive robot tasks in dynamic environment to show that it can be used to explicitly represent and effectively implement the complex reactive behaviors of intelligent robot systems.

• Journal of The Korean Association of Information Education
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• v.22 no.3
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• pp.357-366
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• 2018

The Code Block Based Educational Programming Language(EPL) is the mainstream tool for software education for elementary students. However, Code Block Based EPL has limitations in scalability, even though there are many advantages as an introductory tool for software education. In this study, we searched the approach of SW education using Python, which is a text-based programming language actively used in real industrial field. We developed a learning program and model using Python and applied it to the sixth grade elementary school students for 10 hours. As a result, we found that the robot-based Python learning model had a significant effect on improving students' thinking skills and confirmed the applicability of text-based programming language to elementary school students.