• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.10a
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• pp.52-53
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• 2013

스마트 기기와 안드로이드 플랫폼의 급속한 보급은 모바일 애플리케이션들의 개발을 촉진하고 있으며, 게임, 소셜 네트워크 서비스 (SNS), 교육 등 다양한 도메인 분야에서 애플리케이션들이 개발되고 성공적인 사례도 발표되고 있다. 이동통신 칩과 결합된 GPS 수신기가 휴대폰 및 대부분의 스마트기기에 장착됨에 따라 위치 정보에 기반한 다양한 서비스가 활용되고 있다. 본 논문에서는 위치정보와 소셜 네트워크 서비스를 결합하여 가입자간 정보 공유 및 커뮤니케이션, 검색, 위치정보 등 다양한 비즈니스에 활용될 수 있는 위치기반 SNS 앱의 설계를 제안한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2011.06a
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• pp.21-22
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• 2011

The growth of using smartphone and tablet pc has enabled variety kinds of realtime applications. In these applications, the data which we called data stream is multidimensional, continuous, rapid, and time-varying. However the traditional Database Management System (DBMS) suffers from processing the real time and complex application, in this paper we proposed the framework for CCR Data Stream Server's design and implementation that compiled with Data Stream Database Management System (DSMS) and DBMS in EMR system. The system enables users not only to query stored CCR information from DBMS, but also to execute continues query for the real-time CCR Data Stream.

• International Journal of Internet, Broadcasting and Communication
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• v.11 no.1
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• pp.8-16
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• 2019

As smartphone users grow, mobile operators are trying to standardize and commercialize Rich Communication Suite (RCS), which is a next-generation messaging service, so that it can replace legacy messaging services. However, it is not enough to spread RCS widely to the users only by publishing an RCS app. To increase the use of RCS, a web-based open API for common RCS capabilities is needed. By using the API, Internet-based developers can create applications that make use of the RCS capabilities with less effort and time. This paper proposes a lightweight Comet-based open API to allow mobile operators to expose useful information and capabilities to application developers. The system architecture of the open API framework and call flow between relevant nodes are defined. In addition, examples of protocol translations on the framework are provided.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.986-988
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• 2013

본 논문에서는 GCM(Google Cloud Messaging) 서비스를 활용한 영단어 암기용 스마트폰 어플리케이션을 개발하였다. 서버에 있는 영단어 데이터베이스에서 스마트폰으로 영단어를 주기적으로 출력하여 사용자가 영단어에 자연스럽게 노출될 수 있는 어플리케이션을 개발하였다. 추가적으로 잠금 화면을 영단어와 뜻을 매칭 시켜 해제시키는 시스템을 구축함으로써 영단어를 더욱 더 효과적으로 암기할 수 있는 환경을 제공한다. 현재 안드로이드 마켓에서 제공되고 있는 영단어 암기 어플리케이션과 달리 개발한 어플리케이션은 한 번 설정 후 직접 실행할 필요가 없도록 한다.

• The Journal of the Korea Contents Association
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• v.15 no.8
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• pp.481-494
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• 2015

Recently mobile application providers and telecommunication companies went through a difficult time in a highly competitive mobile and its application market where we've seen a huge trend for diverse mobile applications occurring on smart phone. If there were a time when those of companies need to analyze factors affecting users' intention to download or recommend others applications more than ever, it is now. Based on UTAUT model, this research is to provide them with strategic implications by analyzing those factors according to application types with utilization and hedonic values. As a result, firstly trust and personalization have positive impact on Performance Expectancy and users' intention to use have been significantly affected by Performance Expectancy and Effort Expectancy. Secondly the result of path analysis has a different outcome according to application types with utilization and hedonic values. Therefore it is expected that the research gives practical and strategic implication for application developer, mobile companies and others helping application development, new service launch and marketing implementation.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.6
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• pp.1481-1487
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• 2014

Recently, with the popularization of smartphones, augmented reality has become even more familiar to the public as an application that can provide realistic images as a tool for location-based services. Therefore, as a location-based application for smartphones that is appropriate for the application of augmented reality technology, the study develops a golf information system. Golf is the sport for which we should exactly know the accurate shape or distance to the destinations or obstacles, so the sport is suitable for applying the augmented reality technology. Even though the sport of golf has constantly increasing population to play it with the popularization of it, presently released golf-related smartphone apps are established as 2D images or in GPS basis; thus, they lack a sense of realism unfortunately. Thereupon, this study develops a golf information system by modifying and complementing usefully Mixare, the open source for augmented reality, for the sport of golf into an augmented reality-based system that can provide various information according to the actual environment of the golf course and describes how to apply it actually to the golf course.

• Journal of Institute of Control, Robotics and Systems
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• v.20 no.12
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• pp.1181-1188
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• 2014

In this paper, we propose a novel concept foran unmanned delivery service using a cooperative heterogeneous unmanned system consisting of a self-driving car and an unmanned aerial vehicle (UAV). The proposed concept is suitable to deliver parcels in high-density and high-rise urban or residential areas. In order to achieve the proposed concept, we will develop acooperative heterogeneous unmanned system. Customers can order goods using a smartphone application and the order information, including the position of the customer and the order time, and the package is transported automatically by the unmanned systems. The system assigns the tasks suitable for each unmanned vehicle by analyzing it based on map information. Performance is validated by experiments consisting of autonomous driving and flight tests in a real environment. For more evaluation, the landing position error analysis is performed using circular error probability (CEP).

• Journal of the Korea Society of Computer and Information
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• v.22 no.2
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• pp.89-95
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• 2017

There are a variety of apps that are finding their way. And in car navigation, we launched a product that reflects Augmented Reality technology this year. However, existing apps have problems. It is implemented in 2D or 3D, has a large error range because it has been modified in most vehicles, is not updated in real time, and car augmented reality navigation is a vehicle, and a separate device is required, etc. In this study, we implemented a smartphone app for walking directions using augmented reality, and made it possible to intuitively use a route service from a user 's location to a destination. The Dijkstra algorithm is applied to calculate the shortest path to solve the problem of finding the route with the least cost. By using this application, it is possible to use the route search service even in a data-free environment, to solve the inconvenience of the language barrier, and to update in real time, so that the latest information can be always maintained. In the future, we want to develop an app that can be commercialized by using a character in the path to promote it.

• Journal of Digital Convergence
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• v.10 no.4
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• pp.45-53
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• 2012

This research aims at developing an electronic culture atlas using smart phones as a way to share the research results of Mind Humanities. An electronic atlas offers the web service of a great deal of information without the limitation of paper, which is different from the existing paper maps. When the concept of culture is added to an electronic atlas, it becomes an electronic culture atlas. To create an application program using smartphones, their various features should be understood and the development method to maximize them is necessary. Accordingly, in this paper, what needs to be taken into consideration for the service based on smartphones and the characteristics of smartphones to be considered in the development process were examined.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.31 no.2
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• pp.128-137
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• 2021

Objectives: The purpose of this study is to propose a smart work environment management service model that can measure and maintain work environments in real time. Methods: How existing private consignment business is being carried out was identified and a simpler method was applied to the model. Results: Common support was provided according to the Korea Standard Industrial Classification. Hazards suitable for the relevant industry classification were selected and information on safety and health education, etc. was provided. Theme-specific support provides services focusing on hazards that can be measured through applications. Hazards are evaluated by applying new standards divided into 'Good', 'Average', 'Inadequate', and 'Faulty'. Conclusions: This model is designed to help employers identify health and safety conditions in small businesses where it is difficult to hire health and safety professionals. Using the app proposed in this study, anyone can easily measure their work environment at any time.