텐서플로 기반 딥러닝 수업 모형 개발

강환수(Hwan-Soo Kang),조진형(Jin-Hyung Cho),김희천(Hee-Chern Kim) 한국디지털콘텐츠학회 2022 한국디지털콘텐츠학회논문지 Vol.23 No.5

Recently, the importance of artificial intelligence literacy, which requires basic knowledge of artificial intelligence, has been emphasized in school education. In Korean high schools, artificial intelligence mathematics and basics are operated as elective subjects. In this study, a tensorflow-based deep learning teaching model was developed for computer-related students at a two-year college university, and this model was operated in actual classes to verify the effectiveness by a paired t-test. In order to verify the effectiveness of the learning competency of this model, the learning competencies of ‘Utilization Colab and GitHub’, ‘Understanding AI, ML(Machine Learning) and deep learning’ and ‘Implementing deep learning based on Tensorflow’ were derived and analyzed with paired t-test. A significant result was obtained that students competence in deep learning was improved through pre and post tests applying the studys teaching model.

스마트카드 기반의 전력 원격검침을 위한 시스템 모델 연구

강환수(Hwan Soo Kang),조진형(Jin Hyung Jo),강환일(Hwan Il Kang) 대한전자공학회 2006 대한전자공학회 학술대회 Vol.2006 No.11

This paper investigates a field of AMR(Automatic Meter Reading) and proposes the new concept and system model of power AMR(Automatic Meter Reading) based on Smart Cards. The proposal system is SCEMS(Smart Card based Electricity Metering System). This paper shows the 5 components of SCEMS for AMR of electrical energy usage.

스마트카드 기반의 전력원격검침 프레임워크

강환수(Hwan Soo Kang) 한국콘텐츠학회 2009 한국콘텐츠학회논문지 Vol.9 No.7

전력검침은 전력 사용요금을 부과하기 위하여 전력사용량을 측정하는 행위를 말하며, 이를 자동화한 시스템을 전력원격검침(AMR: Automatic Meter Reading)이라 한다. 전력원격검침은 검침 인력을 시스템으로 대체해 원가를 줄이고 고객 서비스를 강화할 수 있는 시스템으로 부각되고 있다. 본 논문에서는 기존의 전력원격검침 모델의 대안으로 스마트카드 기반의 전력원격검침 프레임워크 SCEMS를 제안하고 구현하였다. 제안된 SCEMS 프레임워크는 자바카드 기반의 다기능 스마트카드를 사용하며, 스마트카드에 수집된 자료와 가구의 전력사용 패턴을 활용하여 다양한 요금제를 지원하는 등의 고객서비스를 제공한다. 제안된 원격검침 모델 연구는 전력산업의 환경변화에서 초래할 다원화, 이질화, 복합화에 대한 해결방안이 될 수 있을 것으로 보인다. Inspection of an Electrical Meter is an action of measuring power usage to charge electricity rates and Electricity AMR(Automatic Meter Reading) is a system to automatize the action. AMR has been highlighted because it can reduce metering cost by substituting an automatic system for personnel and strengthen customer service. In this paper, we proposed and developed a smart card based AMR framework SCEMS as an alternative to other current AMR Models. This proposed SCEMS uses a java card based multi-application smart card and supports customer service such as various meter rates according to electricity consumption pattern data per household and transaction data that are accumulated in a smart card. This research can be a solution to the problems such as diversity, heterogeneity, and complexity that environmental changes will cause soon to the power supply industry.

프로그래밍 언어 교육을 위한 교수ㆍ학습 모델 설계

강환수(Hwan Soo Kang) 한국디지털콘텐츠학회 2012 한국디지털콘텐츠학회논문지 Vol.13 No.4

This paper deals with the design of teachingㆍlearning model for programming language education. Various courses related to programming language education have opened at the university having many academic majors. In the meantime, a variety of programming languages have been developed, many integrated development environments of programming language have also been developed for users to make a program easily. But it is difficult for many novice learners to learn programming language still, likewise it is difficult for many teachers to teach the introduction course of programming language. In this paper, we have designed a teachingㆍlearning model based on scholastic achievements and blended learning for programming language education. The teachingㆍlearning model designed in this study was applied to a course opened in the second semester of 2011. According to the course evaluation result, the teachingㆍlearning model for programming language has shown to be an effective for novice learner.

런지-커타 기법과 유전자 알고리즘을 이용한 Manabe형의 일반화와 제어기 설계에 관한 자바 구현

강환수(Hwan Soo Kang),강환일(Hwan Il Kang),이충기(Choong Ki Lee) 한국지능시스템학회 2002 한국지능시스템학회 학술발표 논문집 Vol.12 No.2

공학교육 내실화를 위한 교과목 포트폴리오 사례 연구

강환수(Hwan Soo Kang),조진형(Jinhyung Cho),김희천(Heechern Kim) 한국디지털콘텐츠학회 2013 한국디지털콘텐츠학회논문지 Vol.14 No.4

Recently student portfolio is widely used as an evaluation method for self-directed performance in engineering education of the university. Especially, as many of the Innovation Centers for Engineering Education and ABEEK held student portfolio competitions, a lot of students in engineering college participate in student portfolio includes the contents and careers of the entire process of university. However, except for courses related to capstone design, there are few regular courses applied to Learning Portfolio in engineering education. Through using Learning Portfolio in courses, students take opportunities of organized collection of learning contents and critical reflection. Under these background study, the regular course in engineering education is may be appropriate for using Learing Portfolio in lecture. In this paper, we present the case study for the Data Structure course opened in the first semester of 2013 which is organized as a Learning Portfolio. According to the results of applying Learning Portfolio to the regular course, it turns out that learners can develope self-directed learning ability in exploring the learning process, and manage a learning process systematically through self-reflection in learning process.

파이썬 기반의 컴퓨터 프로그래밍 교육 모델 연구

강환수(Hwan-Soo Kang),이종만(Jong-Man Lee),김희천(Hee-Chern Kim) 한국디지털콘텐츠학회 2020 한국디지털콘텐츠학회논문지 Vol.21 No.4

Python is being chosen a lot as a programming language course to enhance computational thinking of non-computer majors in domestic universities. But for computer majors, Pythons choice is uncommon. In this study, to effectively educate computer major students about programming, we derived the learning competencies factors of Python programming for majors and presented a Python education model - CS² based on learning abilities. We applied this model to the actual class of python programming for D-University computer majors, and analyzed data before and after class with a paired samples t-test. As a result of the analysis, there were significant differences between the pre and post-application of the CS² education model. We hope that the educational model of this study will provide a turning point when Python is widely used in programming education for computer majors.

런지-커타 기법과 유전자 알고리즘을 이용한 Manabe형의 일반화에 관한 자바 구현

강환수(Hwan-Soo Kang),강환일(Hwan-Il Kang),송영기(Young-Gi Song) 한국정보과학회 2002 한국정보과학회 학술발표논문집 Vol.29 No.1B

진화 알고리즘은 생물의 유전적 진화 과정을 이용한 새로운 문제 해결의 방안으로 결정론적 방법으로 해결하지 못한 난제에 적합한 알고리즘으로 알려져 있다. 본 논문에서는 진화 알고리즘의 연구를 기반으로 전달함수 출력 파형 검출을 위한 기법에서 이용되고 있는 런지-커타(Runge-Kutta) 방법에서의 상미분 방정식의 해를 구하는 기법에서 유전 알고리즘을 이용하여 그 결과를 찾아본다. 본 논문에서의 구현은 자바 언어를 이용하며, 자바 언어를 적용한 구현 방법과 유전 알고리즘의 효율적 기법을 제시한다.

컴퓨터 프로그래밍 교육을 위한 딥러닝 수업 설계

강환수(Hwan-Soo Kang),김희천(Hee-Chern Kim) 한국디지털콘텐츠학회 2020 한국디지털콘텐츠학회논문지 Vol.21 No.10

Artificial intelligence, a core technology in the era of the fourth industrial revolution, has recently become a basic learning competency for students to learn. Various educational studies for artificial intelligence are underway in the United States and the United Kingdom, and cases of artificial intelligence education research for elementary and secondary students are also beginning in Korea. In this study, a deep learning lecture was designed by deriving the learning competencies of computer programming education-centered classes for artificial intelligence education required for the 4th industrial revolution for computer major students. The deep learning lecture consisting of coding on Python, numpy, matplotlib and tensorflow, understanding artificial intelligence and deep learning, and implementing artificial and convolutional neural networks with tensorflow is applied to the actual class of D-university. In order to verify the effectiveness of learning competency of the class, a paired samples t-test was used. As a result of the analysis, there was significant differences in the pre- and post-test results of the learning competencies of deep learning proposed in this study.

원격검침을 위한 다기능 자바카드 설계 및 구현

강환수(Hwan Soo Kang),조진형(Jinhyung Cho),권귀석(Kwiseok Kwon),이종만(Jong Man Lee),강환일(Hwan Il Kang) 한국콘텐츠학회 2009 한국콘텐츠학회논문지 Vol.9 No.8

원격지에 있는 전기, 가스, 수도 등의 검침기에서 유선 또는 무선으로 검침을 자동화하는 원격검침(AMR)에는 전력선통신 방식, 근거리무선통신 방식 등이 주로 연구되어 왔다. 본 논문에서는 유비쿼터스시대의 필수 품목이 될 자바카드를 활용하여 원격검침을 수행할 수 있는 원격검침자바카드(JCA: Java Card for AMR)를 설계?구현하였다. 본 논문의 원격검침자바카드(JCA)는 전력공급사에서 제공하는 표준 거래 절차를 준수하고 전력사용로그 및 정산 자료를 관리하며 다기능 신용카드(EMV) 기능이 충족되도록 설계되었다. 원격검침자바카드(JCA)는 오픈 플랫폼(open platform)의 다기능 스마트카드로 응용 애플릿의 후발급이 가능하므로 신용카드나 교통카드 기능과 함께 다른 제휴사의 응용을 탑재할 수 있다.원격검침자바카드(JCA)는 다른 원격검침방식과 비교하여 원격검침 시스템 구축비용이 적을 뿐만 아니라 자바카드의 인증과 보안을 활용하여 선불 및 후불 정산 방식이 가능하고 제휴 사와의 연계 서비스로 다양한 부가서비스를 제공할 수 있다. AMR(Automatic Meter Reading), which means that it reads the meter of electricity, gas, or water, etc at a remote place automatically through wired or wireless communication, has been studied in terms of Power Line Communication method and Local Area Wireless Communication method, etc. In this paper, we designed and implemented JCA(Java Card for AMR) capable of AMR, which is based on Java Card technology indispensable to the ubiquitous world. In this paper, JCA follows standard transactional procedures offered by power supply company and manages power usage log and billing data, and is designed in order to satisfy EMV multi-functional specifications. Because JCA is a multi-functional smart card capable of post-issuance applets as an open platform, it is installed into other applications of affiliated concerns as wel1 as credit card and traffic card applications. Not only the proposed JCA is a low cost system, compared to other AMR systems, but is capable of paying rates in advance or later by applying authentication and security function of Java Card. In addition the proposed JCA system can create value added services such as affiliated services with corporate alliance.