• Proceedings of the Korean Information Science Society Conference
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• 2007.06d
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• pp.115-118
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• 2007

모바일 단말과 같은 임베디드 시스템은 배포 후 버그를 수정 재 배포하기가 힘들다. 이러한 문제점을 해결 하기 위하여 OMA(Open Mobile Alliance)에서는 OMA Client Provisioning기반의 OMA Device Management 규격을 정의하고 있다. 본 논문에서는 기반이 되는 OMA Client Provisioning 규격을 지원하기 위한 Provisioning Library 와 Provisioning Agent를 설계 및 구현 하였다. 본 논문에서 구현된 Provisioning Library는 Standard C를 이용하였으며, Bootstrap 및 Continuous Provisioning을 지원하기 위하여 설계된 Provisioning Agent는 국내 단말 3사가 채택하고 있는 표준 플랫폼인 WIPI 기반으로 제작 되어 단말간 이식성이 높도록 하였다. 본 논문에서 구현한 시스템은 사용자가 새로 추가된 정보 서비스를 받기 위하여 네트워크 정보를 업그레이드를 원할 경우 서비스 센터에 직접 방문하여 단말을 업그레이드 받을 필요 없이 OTA를 통하여 네트워크 정보를 업그레이드 할 수 있는 환경을 제공한다.

• Journal of Korea Multimedia Society
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• v.19 no.1
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• pp.96-103
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• 2016

Mobile electronic display applications represent a simple motion and express personal motions recently. In this context, we propose the Mobile Signage Application as against these existing applications. It provides the quality motions by multiplex editing and thus should share a kinetic typography with other people using Bluetooth. The Mobile Signage Application includes kinetic motions that are developed by HTML5 and JavaScript to attain variety effects. Furthermore, usability evaluation shows its sufficient availability and serviceability.

• Journal of the Semiconductor & Display Technology
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• v.20 no.4
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• pp.96-101
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• 2021

The SLAM market is growing rapidly with advances in Machine Learning, Drones, Augmented Reality technologies. However, due to the absence of an open source-based SLAM library for developing AR content, most SLAM researchers are required to conduct their own research and development to customize SLAM. In this paper, we propose an opensource-based Mobile Markerless AR System by building our own pipeline based on Visual SLAM. To implement the Mobile AR System of this paper, it uses ORB-SLAM3 and Unity Engine and We experimented with running our system in a real environment and confirming it in the Unity Engine's Mobile Viewer. Through this experimentation, we can verify that the Unity Engine and the SLAM System are tightly integrated and communicate smoothly. Also, we expect to accelerate the growth of SLAM technology through this research.

• Journal of the Korean Society for Library and Information Science
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• v.50 no.4
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• pp.283-310
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• 2016

The present study aims to develop measures to enhance user service at Chungnam Representative Library by establishing Chungnam Representative Library Operation Master Plan. To this end, I conducted a literature review, analysis of services of other representative libraries, and a survey. The study results suggested six measures for user service enhancement. The first measure is space-specific programs, such as children's materials room, general materials room, electronic materials room, auditorium, multipurpose room, outdoor stage, exhibition room, and book café. The second measure is the services specific user types, such as children, adolescents, adults, the disabled, and multicultural families. The third measure is information service specific for information type, such as print material service and digital material service. The fourth measure is the service for the Information-Poor including the expansion of mobile library service, the service for information users in special environment, and the development of mobile library rules. Fifth measure is information service for Chungcheongnam-do residents, such as Baekje Studies specialized service that incorporates local characteristics, specialized information service for Chungcheong Studies and local materials, and information service for administrative and policy materials. The last measure is the measure to secure initial users and early stage service enhancement.

• Journal of Korean Library and Information Science Society
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• v.46 no.2
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• pp.131-151
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• 2015

The purpose of this study was to identify factors on the user's intention of using mobile E-book based on TAM(Technology Acceptance Model). System quality(accessibility and convenience), information quality, and innovation as a user characteristics were chosen as the independent variable of this study, perceived easy of use and perceived usefulness were selected as potential variable, and user's use intention was selected as dependent variable. The survey was conducted by 170 high school students and structural equation modeling was used to analyze the relationships between factors. The results showed that information quality and the user's innovation have a positive impact on both perceived usefulness and perceived ease of use while the other system factors did not affect perceived usefulness and perceived ease of use for mobile E-book. Finally, the perceived usefulness was found to have a positive impact on the user's intention to use mobile E-book.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.26 no.1
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• pp.279-302
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• 2015

The purpose of this study is to analyze researchers' information use behaviors in the field of business administration in order to provide library services based on user information needs. The methods of this study targeted the members of K Society in the business administration field, and employed user survey using a web-based questionnaire. A total of 202 users answered the questionnaire. The questionnaire focused on items such as by age and status, general information use, electronic resources use, SNS and mobile services information use, library and information center use, and specialized business administration library use. The results of this study suggested improving several library services.

• Journal of Digital Contents Society
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• v.10 no.4
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• pp.625-632
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• 2009

In these days mobile handsets have come to be used at almost every user. The performance improvement of mobile devices and networks have made this trend possible. As a great variety of mobile applications are published, the necessity of running large-scale mobile applications becomes greater than before. To accomplish this, the existing researchers have developed mobile cluster computing libraries like Mobile-JPVM. In this paper, we implement a compute-intensive Animated GIF generating application and its cell phone viewer software using Mobile-JPVM library. We find out by the real execution of our softwares on the KTF handsets that they can sufficiently run on cellular phones. Our Animated GIF generator and its viewer are going to be commercially used for the mobile fashion advertisement systems.

• Journal of Broadcast Engineering
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• v.20 no.1
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• pp.110-121
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• 2015

The digital app-book is an advanced form of the electronic book (e-book), which attracts a lot of interests by the help of video, sound, sensors and a variety of interactions. As mobile devices have evolved, the demand of digital app-books is also rising substantially. However, the distribution of digital app-book contents is hard to meet the demand because the digital app-book requires a lot of programming cost for the interaction. To resolve this problem, Was verified and implementation as a library function of the interaction between device and user. The proposed library consists of three parts (user action recognition, device action, and content action) and provides various user-device interaction functions by combining methods of each part, which can support source code reusability, easy understanding and availability, and wide expandibility. The library was used in the development of natural science education app-book contents. As a result, it could reduce a lot of code lines and facilitate more rapid app-book development.

• Journal of Korean Library and Information Science Society
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• v.51 no.1
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• pp.329-347
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• 2020

This study analyzed the effect of app characteristics of the handicapped library on user satisfaction and intention to reuse using the technology acceptance model. As a result, the app's accessibility, convenience, innovation, and reliability have a significant effect on perceived usefulness, and instant accessibility, accuracy, and interactivity have no significant effect. The characteristics of all apps were analyzed to have a significant effect on perceived ease of use. The regression model for perceived ease of use and perceived usefulness was statistically significant. It was found that perceived ease of use and perceived usefulness had a positive effect on user satisfaction and satisfaction was intended to be reused.

• Korean Journal of Remote Sensing
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• v.22 no.3
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• pp.221-228
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• 2006

In this study, an integrated 3D modeling and rendering system dealing with 3D urban landscape features such as terrain, building, road and user-defined geometric ones was designed and implemented using $OPENGL\;{|}\;ES$ (Embedded System) API for mobile devices of PDA. In this system, the authoring functions are composed of several parts handling urban landscape features: vertex-based geometry modeling, editing and manipulating 3D landscape objects, generating geometrically complex type features with attributes for 3D objects, and texture mapping of complex types using image library. It is a kind of feature-based system, linked with 3D geo-based spatial feature attributes. As for the rendering process, some functions are provided: optimizing of integrated multiple 3D landscape objects, and rendering of texture-mapped 3D landscape objects. By the active-synchronized process among desktop system, OPENGL-based 3D visualization system, and mobile system, it is possible to transfer and disseminate 3D feature models through both systems. In this mobile 3D urban processing system, the main graphical user interface and core components is implemented under EVC 4.0 MFC and tested at PDA running on windows mobile and Pocket Pc. It is expected that the mobile 3D geo-spatial information systems supporting registration, modeling, and rendering functions can be effectively utilized for real time 3D urban planning and 3D mobile mapping on the site.