• Journal of the Korean Applied Science and Technology
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• v.39 no.5
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• pp.596-604
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• 2022

This study aimed to examine the mediating effects of anxiety between adolescents' smartphone overdependence and fatigue recovery, and to secure the evidence data for adolescents' smartphone overdependence intervention. Among the 16th Korea Youth Risk Behavior Survey, 54,948 students were included. Data were analyzed using Pearson correlation coefficients, factor analysis, mediating effect analysis. The results were as follows. Smartphone overdependence had a direct effect on fatigue recovery and an indirect effect on fatigue recovery through anxiety. Smartphone overdependence had a significant effect on anxiety and fatigue recovery. Also, anxiety is verified as the mediation effect between smartphone overdependence and fatigue recovery. When we prepare intervention programs which improve fatigue recovery for adolescents, we need to consider anxiety.

• Information and Communications Magazine
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• v.29 no.10
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• pp.45-54
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• 2012

최근 들어, 스마트폰이 다양한 종류의 센서와 무선 네트워크 인터페이스를 탑재됨에 따라, U-헬스케어 서비스 분야에서 환자 또는 의료진에게 스마트폰 기반의 의료용 애플리케이션을 제공하기 위한 많은 연구가 진행되고 있다. 스마트폰은 PC와 달리 사용자에게 이동성을 제공하고, 아울러 GPS, 가속도 센서 등을 비롯한 다양한 센서를 기본적으로 장착하고 있기 때문에 다양한 모바일 헬스케어 서비스에 활용이 가능하다. 본 논문에서는 스마트폰 기반의 U-헬스케어 응용 서비스 구조를 제시하고, 현재 국내/외에서 개발된 U-헬스케어 모바일 애플리케이션들을 분석하고, 마지막으로, 스마트폰 기반 U-헬스케어 서비스의 실현하기 위한 기술적 문제점 및 기술 동향을 알아본다.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.206-207
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• 2023

최근 스마트워치는 통화, 문자, 간편 결제, 기타 장치 제어 등 스마트폰의 소형화 및 경량화 형태로 연구되어 여러 서비스를 제공하고 있다. 스마트워치는 스마트폰 대비 작은 물리적 크기로 인해 적용 가능한 하드웨어의 성능이 상대적으로 낮으며, 이로 인해 낮은 수준의 보안 기능을 제공한다. 이는 스마트워치 대상 보안위협으로 이어질 수 있으며, 이에 대응하기 위한 보안위협 분석 및 도출 연구가 필요한 실정이다. 따라서, 본 논문에서는 스마트워치의 하드웨어 적용 한계점으로 인한 스마트워치와 스마트폰의 성능 차이를 분석하고, 이로 인해 발생 가능한 보안위협을 도출한다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38C no.8
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• pp.692-698
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• 2013

As the mobile marketing through the smartphone has gradually increased, the smartphone application services using the AR marker, QR codes and augmented reality have attracted much attention. Furthermore the outdoor advertising is migrated to LED signage, which brings the visible light wireless communication technologies to the trial for mobile marketing. In this paper we present the implementation of AR marker-based URL access application services through smartphone camera using visible-light wireless communication technologies. We analyze the performance of the implemented system in terms of connection time and success rate.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.45-47
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• 2015

모바일 시스템의 카메라 용용 어플리케이션은 기본적인 이미지 저장 및 영상 촬영뿐만 아니라 카메라 기반의 증강현실 및 위치 기반 서비스 등 다양한 응용 분야에 활용할 수 있다. 특히, 셀프 활동에 많이 활용되는데, 이때 발생하는 문제점은 셀프 촬영이 힘들다는 것이다. 스마트폰 카메라를 자유롭게 제어하고, 나아가서는 카메라 촬영 및 다양한 이미지 프로세싱을 보조해줄 수 있는 시스템 및 장치가 필요하다. 본 논문에서는 안드로이드 스마트폰 기반의 카메라 제어 모듈과 카메라 제어 모듈을 활용한 이미지 프로세싱 보조 시스템을 구현해보도록 한다. 카메라 제어 모듈은 리모트에서 안드로이드 스마트폰의 카메라 촬영을 제어할 수 있으며, 여러 대의 안드로이드 스마트폰과 연동해서 다양한 각도에서 하나의 피사체에 대한 카메라 촬영이 가능하도록 통신 제어 시스템이다. 이를 활용하면 모바일 카메라 응용 서비스를 좀 더 폭넓게 활용할 수 있을 것이다.

• Korean Journal of Remote Sensing
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• v.27 no.5
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• pp.555-563
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• 2011

Nowadays, demands with respect to applications based on geo-based information on mobile device such as smartphone and those based on open platform or open source have been increasing. This trend can be regarded as significant opportunities to widen application fields and to expand industry business cases using satellite imagery. However, it needs a different approach from conventional remote sensing researches. This work focuses on SAR among many kinds of geo-based data resources. First, an application for Interferometric SAR processing based on open source was implemented. And using this, InSAR data was processed and stored into database. When smartphone users at any places request InSAR results, they can receive InSAR information and concerned metadata on their device. An smartphone application for this task was designed and implemented in this study. This provides a practical way for SAR service for smartphone, and can apply to build mobile service system of complex and compound types of remote sensing resources and their derived contents.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2010.04a
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• pp.545-550
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• 2010

Due to the advancements in mobile communication recently, the smartphone is coming to wide use in variety of fields with powerful functions which are GPS, Wi-Fi, built-in camera, and so on. I'm going to discuss the application implementation using Smartphone in the e-Navigation.

• 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.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.12 no.1
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• pp.283-294
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• 2012

Recently increasing usage of smart phones so, the application field of convergence industry between IT technology using smart phone-based mobile communication networks and other industry branches is expanding. In addition, R&D technologies in other fields are applied to smart phone applications effectively in order to develop products and support daily life more convenient. However, it is very hard to control these products and there is no efficient solution for this problem when many people are sent to specific area for big events, such as Biennale, Film Festival, EXPO, and so on. In order to solve this problem, this paper describes a network-based ticket reservation system and its organization using augmented reality on smart phone and mobile communication networks. In particular, we propose a method of designing and developing prototyping system based on smart phone application design technologies, prior to developing real smart phone application.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.3
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• pp.597-604
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• 2011

The various Smartphone platforms that are used currently make difficult to build efficient applications("apps") for Smartphone. Introduction of middleware in the Smartphone environment is being studied to solve this problem. By enhancing interoperability between server systems and Smartphone platforms as introducing this middleware supports efficiently for Smartphone apps to be developed and managed. Thus, the development of this middleware for Smartphone has become essential for the purpose of responding actively to the rapidly expanding Smartphone market. In this research, we designed and implemented Smartphone middleware which optimizes the cost and time for developing new application service and maintaining it. In order to test this implemented middleware's performance and its capabilities, we also developed university Smartphone apps and activated campus twitter.