• Proceedings of the Korean Society of Disaster Information Conference
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• 2022.10a
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• pp.389-390
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• 2022

본 연구는 증강현실 기반의 항공기 정비훈련 장치의 어플에 관한 것으로, 이는 모바일 디바이스에 설치 및 실행되는 항공기 정비훈련 장치는 훈련 대상 항공기의 정비 매뉴얼에 기반하여 저장부, 식별부, 입력부, 제공부로 구성하였다. 저장부는 작성된 훈련 시나리오를 저장 및 관리하는 훈련 시나리오를 저장한다. 식별부는 모바일 단말의 카메라를 통해 획득된 카메라 영상을 수신 및 분석하여, 카메라 영상 내에 존재하는 부품 각각을 식별할 수 있도록 하였다. 입력부는 모바일 단말의 터치스크린과 버튼을 통해 입력된 사용자 제어값을 획득 및 출력하는 사용자 제어값을 입력하며, 객체 식별 결과 및 사용자 터치 값을 기 저장된 훈련 시나리오에 따라 훈련 대상 부품을 확인하고 훈련 컨텐츠를 증강현실 방식으로 제공하는 훈련 서비스 제공부를 포함하는 어플이다. 본 어플의 평가항목으로는 저장, 식별, 입력, 제공부 항목에 대하여 신뢰성을 평가하였으며, 인식 및 출력에 대한 신뢰성에 문제가 없는 것으로 확인되었다.

• Journal of Convergence for Information Technology
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• v.8 no.5
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• pp.121-129
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• 2018

The university museum is working to discover, research, and exhibit cultural artifacts as well as use them as resources of education and academic researches as one of the important organizations of the university. Current, however, university museums have the low-level usability caused by the reduction of financial and administrative supports of the university. One approach to solve this problem may be the design of mobile docent app for improving the accessibility of the museum. The app enables users get artifacts and education programs without the restriction and learn artifact-related knowledge easily. In this paper, we design and implement a new mobile docent app according to the analysis of content of the Chosun university museum as a real case study. In addition, we evaluate the functionality and usability of the proposed app by affordance-based questionnaire.

• Proceedings of the Korean Society of Computer Information Conference
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• 2017.07a
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• pp.407-408
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• 2017

본 논문에서는 기존의 비데와 인체 정보 수집 센서류를 결합한 IoT기반의 스마트 비데를 위해 생체 측정 데이터를 효과적으로 관리하고 사용자들의 사용 편의성을 증가시키는 모바일 기반 어플을 설계한다. 제시하는 모바일 어플은 스마트 비데의 체온센서, 산소포화도센서, 압력센서를 통해 수집된 사용자의 생체정보를 블루투스 기반 통신을 통해 실시간으로 생체신호를 수집 및 디스플레이 하며, 특정 기간의 데이터 통계를 통해 생체 정보의 이력을 사용자에게 효과적으로 제공함으로써 각종 질병 예방에 기여할 수 있다.

• Journal of Digital Contents Society
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• v.14 no.2
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• pp.255-262
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• 2013

Useful applications for English education enable immediate conversion of mobile devices into remote wireless systems for classroom computers. Once the free software has been installed in the main computers in the classroom, using powerpoint, students can operate the computers through their mobile devices by installing Air mouse on them. By using this, the students can draw or write on the "board" to manipulate the educational resources from where they are/from their seats. The study of English language encompasses not only academic study but also language training. Until recently, the issue of the English language learning has been ridden with certain problems-instead of being a tool that facilitates communication, its main purpose has been for school grades, TOEIC, and TOEFL. This study suggests English language learning methodology using various applications such as mobile, VOD English language content, and movie scripts in implementing easy and fun English language learning activities that can be studied regularly. This is operationalized by setting a specific limit on learning and by using various media such as podcast, Apps, to increase interest, motivation, and self-directed learning in a passive learning environment.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.07a
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• pp.337-338
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• 2021

본 논문에서는 스마트 콘택트 렌즈를 이용한 건강 관리 어플리케이션을 제안한다. 기존에 연구되고 있던 스마트 콘택트 렌즈에 있는 센서들을 통해서 렌즈 사용자의 생체 데이터를 수집하고 수집한 데이터를 수치화 하여 당뇨병, 녹내장, 간략한 스트레스 지수 까지 시각화 하여 보다 편하게 자가 진단하고 예방하는데 그 목적이 있다. 렌즈의 구성으로는 생체 데이터를 수집하는 센서는 포도당 농도 측정 센서, 안압 측정 센서, 코르티솔 호르몬 측정 센서가 있고, 어플과 연동하기 위한 통신 센서가 포함 된다. 이후 수집된 데이터를 수치화 한 후 어플 화면에 시각화하여 사용자가 각 항목을 확인하는데 있어서 편리 할 수 있다. 많은 사용자들의 데이터가 모이면 이를 빅데이터로 구성한 뒤 건강관련 부서와 연동하여 기존에 의사들이 더 정확한 진단을 할 수 있도록 지원한다. 또한 사용자들은 어플을 사용하면서 예방하는데 큰 목적을 둔다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.13 no.5
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• pp.135-142
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• 2013

With a rapid growth of hardware and product material industries, evolution of handheld terminal technologies is progressed. Various applications using mobile phone are the major trend in recent smart applications. Especially, interesting applications using camera module in a smartphone are developed continuously, mobile users are able to use various useful mobile applications nowadays. In this paper, we design and implement smartphone app for measuring real size of the shooting object in the image taken by a camera module in a smartphone precisely. We implement 4 different shooting modes for precise measurement of objects and 0 point control module is developed to minimize the differences of shooting images taken by different types and systems of various smartphones. The smartphone app proposed and implemented in this paper is analyzed and evaluated by a simulation study.

• Journal of The Korean Association of Information Education
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• v.17 no.1
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• pp.9-21
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• 2013

The purpose of this paper is to develop and implement a mobile application system to improve arithmetical operations for low achievers. The proposed system has the following characteristics. First, the system provides individual study for low achievers based on their different study levels. Second, instant feedback can be provided to students for maintaining study motivation. Third, the system enables students to study arithmetical operations in persistent and repetitive manner. This is due to that, in the literature, arithmetical operation capacity can be increased by persistent and repetitive practices. The proposed system is applied to mathematics low achievers and the following results are obtained. First, interests and intrinsic motivation are increased through use of the proposed system. Second, arithmetical operation speed is increased. Also, accuracy of arithmetical operation is improved. Thus, it is concluded that arithmetical operation capacity of low achievers is improved using the proposed system.

• The Journal of the Korea Contents Association
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• v.21 no.1
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• pp.311-320
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• 2021

At present, the secondary school teacher employment examination(SSTEE) is the only gateway to become a national and public secondary teacher in Korea, and after the revision from the 2014 academic year, all the questions of the exam have been converted to supply-type test items, requiring more definitive, accurate, and solid answers. Compared to the selection-type test items that measure recognition memory, the supply-type questions, testing recall memory, require constant memorization and retrieval practices to furnish answers; however, there is not enough learning tools available to support the practices. At this juncture, this study invented a mobile app, called ONE PASS, for the SSTEE. By unpacking the functional mechanisms of the brain, the basis of cognitive processing, this ONE PASS app offers a set of tools that feature brain-based learning principles, such as a personalized study planner, motivation measurement scales, mind mapping, brainstorming, and sample questions from previous tests. This study is expected to contribute to the research on the development of learning contents for applications, and at the same time, it hopes to be of some help for candidates in their exam preparation process.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.4
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• pp.141-147
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• 2014

With the rapid development of major functions in a smartphone, many applications interacting with a smartphone are introduced and mobile applications converged with various related technologies are announced and rapidly disseminated recently. In this paper, we propose the design of a smart mobile application operated with devices like sensors in order to utilize various functions of the smartphone effectively. The mobile application proposed in this paper uses the bluetooth module of the smartphone, composes the wireless ad hoc network with various sensors around us, and collects bionic context information of the user in real time. The smart application designed and implemented in this paper is the sensor based healthy diet application that can fulfill healthy diet program by reflecting the user's sensed bionic context data in real time.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.13 no.4
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• pp.149-156
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• 2013

With a rapid growth of smartphone technologies, various applications are developed and diffused actively nowadays. Especially, interesting applications using camera module in a smartphone are developed continuously, mobile users are able to use various useful mobile services in humdrum life. In this paper, we design and implement measurement algorithms which precisely measure the object taken by the camera module in a smartphone. We use 3-axis gyro accelerometer sensor in a smartphone to get the distance, incline and rotation angle in a real time when we take a picture of shooting object and can obtain precise size of it in the picture image. The measurement algorithms proposed in this paper are analyzed and evaluated by a simulation study.