• The Journal of the Korea institute of electronic communication sciences
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• v.16 no.4
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• pp.725-734
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• 2021

To prevent tire accidents, we developed an application that can check tire safety using the app-inventor and the bluetooth communication. The temperature sensor measures ambient temperature, the pressure sensor measures tire pressure, the laser sensor has a distance of more than 50mm, and an angle of 45° to measure for the optimal tire. We have developed an application that determines tire condition based on measured wear and tear levels, works through the Bluetooth module via App Inventor, and identifies tire condition and expected replacement condition on the user's mobile phone.

• Communications for Statistical Applications and Methods
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• v.13 no.3
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• pp.479-490
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• 2006

Francis Gallon (1822-1911) introduced the term 'regression' and 'correlation' in the study on human inheritance of the stature from parents to their children. In almost every statistics textbook, superficial attentions have been given to him just as the inventor of the term 'regression'. Rereading his books and papers, we investigated problems he had tried to solve and the methods he had used to solve the problems. In addition, we tried to find the motivation that had led Gallon to take attention to the variation rather than the central tendency of observational data that had fascinated his forerunner Adloph Quetelet.

• Proceedings of the Korea Contents Association Conference
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• 2014.11a
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• pp.385-386
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• 2014

최근 스마트 기기의 대중화와 더불어 스마트 기기 애플리케이션을 제작하기 위한 다양한 툴이 도입되고 있고, 이러한 툴을 다양한 교육에 활용하고자 하는 연구들이 진행되고 있다. 이에 본 논문에서는 최근 널리 활용되고 있는 앱 인벤터를 이용한 로봇교육에 대하여 알아보았다. 이를 통해 로봇 제어를 위한 로봇프로그래밍의 미래지향적인 변화의 방향과 형태에 대하여 중점적으로 논하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.515-517
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• 2015

본 연구는 블록 형태의 프로그래밍 툴인 앱 인벤터를 이용해 학생들의 학업에 대한 정보와 궁금증을 해결해 줄 수 있는 인터넷 강의평가 앱 개발을 연구하였다. 앱을 개발하는 과정에서 웹 데이터베이스와 구글 퓨전 테이블을 이용하여 로그인 기능과 사용자들에게 공유하여 볼 수 있는 게시판 기능을 추가하였다. 이 기능을 통하여 사용자간에 정보를 공유하여 인터넷강의 선정에 정보제공 방법을 연구하였다.

• Journal of Digital Convergence
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• v.14 no.10
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• pp.1-8
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• 2016

Coding education is an effective convergence type educational tool. While solving problems and designing programs, students can enhance problem solving ability, logical reasoning ability and creative thinking. Researches on coding education are done primarily for elementary school and middle school students. However, researches on college students are lacking. Today, educating college students about coding is in dire need. Although there are efforts to promote the importance of coding education and make it requirements. People find it difficult to find ways to provide training. There is a need for researches on coding as universal education. Therefore, this research proposed educational training using app inventor based on flipped running in order to effectively promote coding education. This study conducted the survey and the personal interview to measure the effectiveness of coding education. It is hoped that, through coding education, students who do not major in coding could combined their knowledge of their major with coding to improve their problem solving ability to solve various problems based on computing knowledge and approach.

• The Journal of the Korea Contents Association
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• v.18 no.10
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• pp.443-452
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• 2018

With the explosively increasing intellectual property rights, securing technological competitiveness of companies is more and more important. In particular, since patents include core technologies and element technologies, patent analysis researches are actively conducted to measure the technological value of companies. Various patent analysis studies have been conducted by the International Patent Classification(IPC), which does not include the latest technical classification, and the technical classification accuracy is low. In order to overcome this problem, the Cooperative Patent Classification(CPC), which includes the latest technology classification and detailed technical classification, has been developed. In this paper, we propose a model to analyze the classification of the technologies included in the patent by using the detailed classification system of CPC. It is possible to analyze the inventor's patents in consideration of the relation, importance, and efficiency between the detailed classification schemes of the CPCs to extract the core technology fields and to analyze the details more accurately than the existing IPC-based methods. Also, we perform the comparative evaluation with the existing IPC based patent analysis method and confirm that the proposed model shows better performance in analyzing the inventor's core technology classification.

• The Journal of the Convergence on Culture Technology
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• v.3 no.2
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• pp.55-59
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• 2017

We are confirmed to the transfer degree of physical signal with the communication code on the wireless communication system. The physical transfer system was consisted of such as ECG, PPG and Bluetooth part that received signal. Communication method was take the international standard level of IEEE802.15.1 forms, the frequency transition was needed the bandwidth of communication for transfer signal with the band-communication method. The program was expressed to receive with wireless communication condition that was consisted of such as the serial chart, processing and app inventor. Their signal was identified to transfer certainly the corrected signal. Therefore, signal processing for coding by the real-time graphing and using processing by a standard capacity of serial-chart graphing that will be possible to progress the improvement effectiveness of wireless communication system.

• Journal of Korea Game Society
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• v.18 no.3
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• pp.49-60
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• 2018

In many countries, recently computer programming eduction has become mandatory for K-12 students. Generally since programming is difficult for K-12 students to learn, a lot of previous works have been published in which the study motivation and class satisfaction increased when game programming was applied to programming classes. We investigated a research in which we used game programming in the programming classes for middle-school students, and analyzed educational effects. In this paper, we described the specification of the games and our class model that were applied in the research. Also, we analyzed changes made to computation thinking abilities, creative thinking abilities, and perceived support for programming after the programming classes. As a result, it was found that those abilities and the perceived support were increased. Additionally, we applied Havruta learning, a kind of paired learning, in the programming class, and have known that it increased the educational outcome with respect to the traditional method.

• Journal of the Korean Institute of Telematics and Electronics S
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• v.36S no.7
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• pp.71-80
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• 1999

Sign-language communication can be a useful way of exchanging message between people who using different languages. In this paper, we report an experimental survey on the construction of a Korean-Japanese sign-language communication system using 3D model. For real-time communication, we introduced an intelligent communication method and built the system as a client-server architecture on the Internet. A character model is stored previously in the clients and a series of animation parameters are sent instead of real image data. The input-sentence is converted into a series of parameters of Korean sign language or Japanese sign language at server. The parameters are transmitted to clients and used for generating the animation. We also employ the emotional expressions, variable frames allocation method, and a cubic spline interpolation for the purpose of enhancing the reality of animation. The proposed system is implemented with Visual $C^{++}$ and Open Inventor library on Windows platform. Experimental results show a possibility that the system could be used as a non-verbal communication means beyond the linguistic barrier.

• PNF and Movement
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• v.21 no.1
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• pp.129-137
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• 2023

Purpose: The physical therapy diagnosis process requires high-level background knowledge, the ability to obtain added information from patients, accurate examination skills, and a framework for transforming thoughts into a diagnostic decision. Thus, the physical therapy diagnostic process is highly complicated and difficult work. To function as autonomous professionals, physical therapists must develop effective clinical diagnosis skills. As such, mobile application aids can help with accurate and scientific diagnoses. Therefore, this study aims to develop and evaluate the usability of a mobile application for physical therapy diagnoses. Methods: In this study, a diagnostic application was developed using App Inventor, the development environment was the Chrome web browser for Windows 10, and the mobile application was run on a Google Pixel 5. The developed application was evaluated for usability by 20 physical therapists with more than 5 years of clinical experience in the musculoskeletal physical therapy field, and a usability evaluation was conducted using a 5-point Likert scale for accuracy, convenience, satisfaction, and usability. The collected Likert scores were converted into percentages and analyzed as descriptive statistics. Results: The graphical user interface consisted of an initial screen with program guidance, 18 screens presenting the algorithm, and 12 screens presenting the estimated diagnosis based on the algorithm. As such, the usability evaluation of the developed application was as follows: accuracy 100%, convenience 90%, satisfaction 91%, and usability 88%. Conclusion: The newly developed mobile application for physical therapeutic diagnoses has a high accuracy, and it will aid in building an easy and reliable physical therapy diagnosis system.