• Proceedings of the Korean Society of Computer Information Conference
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• 2023.07a
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• pp.309-311
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• 2023

본 논문에서는 만성질환자 건강관리서비스 플랫폼 개발을 위항여 건강측정기 모바일 연계기술 개발 및 적용하고 IoT 기반 생체정보 획득 및 라이프로그 건강관리 플랫폼 API 연계 기술을 통하여 지역 만성질환자를 위한 언택트 헬스 모니터링 플랫폼 개발을 수행하였다. 해당 시스템을 통하여 지역 보건소 협력 및 가족 중심 만성질환자 입체적 건강관리 모니터링 시스템 개발에 적용하고 IoT 장비 인터페이스기술, 개인 건강관리기술, 플랫폼 운영 및 구현기술, 데이터 관리기술 개발을 통하여 효율적으로 개인 라이프로그를 활용할 수 있도록 하였으며, 효율적인 관리를 위하여 AI 챗봇 서비스 시스템을 통한 효율성을 극대화를 추진하였다. 본 논문에서는 개인 라이프로그를 활용한 AI 챗봇 기반 만성질환자 건강관리서비스 플랫폼을 구현하여 만성질환자에 대한 서비스를 제공하고 만족도를 실증하여 서비스의 우수함을 입증하였다.

• The Journal of Korean Association of Computer Education
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• v.7 no.3
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• pp.45-56
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• 2004

Java provides support for Web, concurrent programming, safety, portability, and GUI, so there is a steady increase in the number of Java users. Java is based on the object-oriented concepts such as classes, instances, encapsulation, inheritance, and polymorphism. However the JVM(Java Virtual Machine) hides most of the phenomena related to the concepts. This is why most of Java users have much difficulty in learning and using Java. As a solution to the problem, I have developed a tool Alpha that visualizes the phenomena occurred in the JVM from the standpoint of the concepts and will describe the design and features of the tool in this paper. For practicality and extendability Alpha has an MVC(Model-View-Controller) architecture and visualizes the phenomena such as object instantiations, method invocations, field accesses, cross-references among objects, and execution flows of threads in the various ways according to the levels and purposes of the users.

• The Journal of Korean Association of Computer Education
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• v.8 no.5
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• pp.85-95
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• 2005

In the information and knowledge-based society, problem-solving ability to utilize information and to cope with various problem situations is considered to be much more important than simply memorized knowledge. On the basis of such needs of the current society, various studies were conducted focusing on the merits of e-learning to create learning environments that can help students acquire basic knowledge and develop problem-solving abilities. This study attempted to design and develop a web-based learning environment for problem-solving applying cognitive apprenticeship that can help students develop their thinking skills and problem-solving strategies. The results of this study can be utilized as a method to connect traditional classrooms to e-Learning.

• The Journal of Korean Association of Computer Education
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• v.11 no.4
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• pp.37-46
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• 2008

Using robots in the programming classes may help to induce learners' interest and motivation. However, simple introduction of new media, such as robots, may cause to increase learners' interest level temporarily, but also may give cognitive overload and offense against learning motivation. We developed a robot programming course to induce intrinsic motivation and to reduce cognitive load for learners in the programming education. And then, we implemented the developed course in college programming classes and analysed the educational effects of robot programming learning on novice learners' flow level. We found that robot programming course was helpful in enhancing novice learners' flow level. Especially, the element of 'autotelic experience', which explains an intrinsic motivation, was higher than conventional programming course group. It means that the developed strategies for robot programming course provides positive effects on learners' intrinsic motivation.

• The Journal of Korean Association of Computer Education
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• v.20 no.4
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• pp.77-84
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• 2017

This paper proposes a tool that can be used as a logical expression simplification tool that can be used for deepening learning of logic circuits and further utilized as a design automation tool for optimizing semiconductor parts. The simplification method of logical expressions proposed in this paper is to find common subexpressions existing in various logical expressions and reduce the repetitive use. Finally, the goal is to minimize the number of literals used in all logical expressions. These previous studies failed to produce a common subexpression embedded in the logical expressions because they only use division principle. The proposed method uses cubes with a Hamming distance of 3 to find the common subexpression embedded between logical expressions. Experiments using benchmark circuits show that the proposed method reduces the number of literals by as much as 47% when comparing simplifications with other methods.

• Journal of the Korea Society of Computer and Information
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• v.19 no.12
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• pp.177-185
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• 2014

The smart devices are used more and more, these days. It make the teaching method using smart devices possible and it is considered as important method in the modern society. Though this kind of approach is prospering in foreign countries, it is not so in the domestic education system. Therefore, this paper proposes the mobile web system supporting the active interaction between the teacher and the students for the domestic education. This system can be used everywhere smart device is connected to the internet. The teacher set a question and the students answers against it through the system in real time. All questions and answers are written into the system and it can be checked again visually. It makes teachers and students trace and evaluate their interaction. And the teacher can download those result in microsoft Excel file format. We did a survey on this system to students and got positive response.

• The Journal of Korean Association of Computer Education
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• v.15 no.2
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• pp.37-45
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• 2012

The case of South Korea's Internet newspapers, harmful advertising is illegal but rampant. The children and youth are not protected, so effective measures are urgently required. Therefore, to achieve self-regulation, a discrimination system model using collective intelligence and collective emotions is proposed. This study is to suggest a Discrimination System Model of harmful contents using collective intelligence and collective emotions as the actual program of self-regulation. The Discrimination System model forms the level of harmful contents by using contents, form, text, size as well as the implied and reminiscent story of image as discriminant factors of a group testing. The formed level is established for harmful contents discriminant criteria after going through the process of generalization again. It can be not clear and ambiguous for internet newspaper banner ads to be measure the level of harmfulness. This Discrimination System will have the strengths of resolving this problem.

• The Journal of Korean Association of Computer Education
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• v.21 no.6
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• pp.105-115
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• 2018

The descriptive-type question is appropriate for deep thinking ability evaluation, but it is not easy to grade. Since, even though same grading criterion, the graders produce different scores, we need the objective evaluation system. However, the system needs the Korean analysis. As the descriptive-type answering is described with the compound sentence, the system has to analyze the compound sentence. This paper develops the Korean syntactic-semantic analysis system for compound sentence and evaluates performance of the system. This system selects the modifiee of the word phrase using syntactic-semantic constraint and semantic dictionary. The 93% accurate rate shows that the system is effective. This system will be utilized in descriptive-type grading and Korean processing.

• Journal of the Korea Society of Computer and Information
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• v.27 no.4
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• pp.231-239
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• 2022

In this paper, I analyze the difficulties of web service development education for non-IT majors through the Q&A of students posted in the k-mooc lecture, and propose methods to improve them. Through Q&A analysis, it was confirmed that non-majors mainly had difficulties in using unfamiliar tools, cost of cloud service, setting up server environment, and writing code while taking web service development courses. To solve this problem, I propose a method to reduce the server cost problem and the complexity of the server environment by using BaaS(Backend as a Service), which is one of the cloud service models. It also shows that it is possible to reduce the length of code that needs to be written at once by using the React library to modularize long code into smaller units. Finally, I propose an improvement plan that even non-IT majors can easily learn by implementing a web application that works by using the design output obtained by using Figma.

• Journal of the Korea Society of Computer and Information
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• v.17 no.8
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• pp.189-201
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• 2012

The purpose of this study is to develop an effective teaching model for the "Problem solving methods and procedures" section in the revised academic high school informatics curriculum, verify its effectiveness, make the subject more effective and appealing to teachers as well as students. The model includes a middle school level informatics curriculum for the students who have yet to learn the section. This development follows the ADDIE model, and the Python programming language is adopted for the model. Using the model, classes were conducted with two groups: high school computer club students and undergraduate students majoring in computer education. Of the undergraduate students 75% responded positively to the model. This model was applied in the actual high school classroom teaching for 23 class-hours in the spring semester 2012. The Pearson correlation coefficient that verifies the correspondence between the PSI score and the informatics midterm exam grade is .247, which reflects a weak positive correlation. The result of the study showed that the developed teaching model is an effective tool in educating students about the "problem solving methods and procedures". The model is to be a cornerstone of teaching/learning plans for informatics at academic high school as well as training materials for pre-service teachers.