• KIISE Transactions on Computing Practices
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• v.21 no.12
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• pp.798-803
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• 2015

DGPS is a technology that can improve the positioning precision of the existing GPS based on the correction information regarding reference station. Although the country is currently building infrastructure for DGPS correction information to be transmitted, it is being used only in limited areas for which DGPS expensive equipment is required. By enabling the development of the DGPS device using the smart phone, this limitation can be overcome, DGPS can be applied for various location-based services, and the implementation of the new model of location-based services may be enabled. In this paper, we introduce the development of a DGPS device for which high-precision positioning is possible using DGPS correction information received via the DMB network or mobile network in the smart phone environment.

• Culinary science and hospitality research
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• v.17 no.5
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• pp.108-121
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• 2011

The purpose of this study is to carry out the exploratory study on the easiness of using smart phone applications for searching food service information based on consumer characteristics. Examining the attributes of the easiness of using smart phone applications for searching food service information, this study checks the order of priority in the attributes and analyzes the correlation among the constructs of easiness of use, along with the difference in easiness of use based on demographic characteristics. The survey was conducted to the users of smart phones who live in 3 areas such as Seoul/Kyongki, Daegu/Kyongbuk, and Busan/Kyongnam from Jan. 3-Feb. 3, 2011, and total 264 copies of questionnaire were used for the final analysis. The result showed that the respondents considered the functions of searching restaurants, recommended restaurants, and the popularity list more important among the measurement items of easiness of use, and there was highly positive correlation between easiness to select restaurants and communication functions among all the factors drawn. It was found that there was significant difference in the function of searching restaurants, practicality, the easiness to select restaurants, communication, and the easiness to select menu on areas.

• Proceedings of the KSR Conference
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• 2011.10a
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• pp.2573-2580
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• 2011

SMRT(Seoul Metropolitan Rapid Transit Corporation) changed PC-oriented office system to Smart-Phone oriented mobile office system(STnF: SMRT Talk & Flash), and provided smart phone to all staffs. STnF make it possible not only voice communication between staff, but also to input and inquiry all kind of information related to work(ex: Facility maintenance, Rolling Stock management, office management, Finance, human resource etc.) based on smart phone. STnF conquers the limitation of time and space. All staffs can commute to the site directly to reduce moving time and to share information between staffs, so SMRT improve speed and reliability of work by making a quick decision and action on the spot. After introduction of STnF, within 1 year, the equipment failure ratio fell to 47%. Mobile office system reduced and level-off the step of approval. so enhanced civil customer service. Quantification and scientific movement of work make it fast evolution and development. These business improvement make it possible to put more outstanding manpower on new business and R&D project, and this contributes to company's management effectiveness.

• Journal of Advanced Navigation Technology
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• v.15 no.6
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• pp.1143-1151
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• 2011

This study is implemented to Hybrid-web based Integrated System which provides information requesting by user under smart phone environment, cloud computing. This system is consisted of web robot of SaaS service which storages and manages the information after collecting bulletin information from distributed servers of campuses in interval and board managing PaaS server that provides server information to user through smart phone UI. We are also implemented NOA(Notification App) that inform new bulletin information using user's GPS.

• Journal of information and communication convergence engineering
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• v.8 no.6
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• pp.665-670
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• 2010

This paper suggests the vehicle remote control on the basis of Smart Phone. In general, most smart phone is mounted with G-sensor to control the motion. G-sensor is able to control several directions and movements of velocity along with X, Y, and Z axis. To access remote location and data system, we can also utilize Wi-Fi communication as well as bluetooth communication. In this study, we propose the scheme that is the car management application by remote control via real-time monitoring on mobile device for user convenience.

• Annual Conference of KIPS
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• 2012.11a
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• pp.410-413
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• 2012

최근 네트워크를 이용한 온라인 원격 진료 서비스가 논의 되고 있는 시점에서 원격 진료 서비스에서도 특정 환자에게 맞는 의료 서비스 매칭 서비스에 대한 필요성이 핫 이슈로 대두되고 있다. 따라서 본 논문은 Mobile SmartPhone 환경에서 환자 맞춤형 의료 서비스 지원 시스템을 설계하고 온라인상에서 환자에게 맞는 의료 기관을 매칭하여 특정 환자에게 맞는 최적의 의료 서비스를 제공하는 시스템을 설계 하고자 한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.380-382
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• 2012

In recently, we are utilizing the Smart phone in a lot of fields. Thus the personal developers and companies developed the smart phone application and utilize it for disaster information system and disaster alert service. Utilization of Iphone applications as disaster information alert is currently not popular. And, the existing Iphone application only has very few features. So, a powerful iphone application of disaster information collection and service based on GIS is very necessary for users.

• Journal of Korea Society of Digital Industry and Information Management
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• v.11 no.1
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• pp.37-45
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• 2015

As of June 2014, the rate of mobile internet users aged 6 and over is estimated at 98.3% (up by 2.8%p from the previous year). The vast majority of the teens (99.7%), the 20s (99.8%), the 30s (99.8%), and the 40s (98.1%) answer they use the smart phone. The existing notice methods have utilized noticeboard in the apartment. It is difficult to support real-time notice. The App has a merit to be accessed in anywhere, so that it is quite suitable for services requiring real-time support. This paper describes a development of apartmenrt notice and decision-making service using smart phone. We study previous researches about apartmenrt notice Apps. Then, we described the notice flow diagram and decision-making flow diagram. Apt admin sends the important notice message to residents using apt notice app in real-time. Apt admin writes the decision item in the admin web site. It pushes decision item to residents using apt notice app in real-time. The residents vote and send it to Apt admin. Apt admin counts the votes and send the collect the vote result to to residents.

• Journal of Digital Convergence
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• v.11 no.3
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• pp.255-262
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• 2013

Modern smart phone on the Determinants of Customer Satisfaction Analysis In this study, the future should be the basis for the development of products to meet customers' phone makers smart. Were the factors that affect the study design, size, and ease of use of the screen, a pandemic, the application of the five items on the customer satisfaction. Customer satisfaction to determine the difference between the factors in the manufacturers appeared to be factors in the design, size, ease-of-use of the screen, after-sales service, durability, pandemic, brand awareness, and application.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.15 no.5
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• pp.85-90
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• 2015

Work environments within the firm with a concept of mobile office is growing divided into two sections. It's Wi-Fi FMC(Fixed Mobile Convergence) field Which are implemented in a telephone service available from existing fixed-line service in the center of the smart phones and the EMS(Enterprise Mobility Service) field to make people will be able to handle PC the center of the information system within an enterprise using a smart phone instead of terminal facility connects to a system in the workplace and external. This paper developed FMC controller to allow execution IMS(IP Multi-Media Subsystem) services to complement the issues of the FMC corporation, telephony service associated. The controller includes FMC automatic enrollment services, voice quality enhancement of the mobile phone, anywhere within the firm on his mobile phone calls can provide mobility and is also implemented FMC LCR function that use status information from mobile soft-phone within the IP-PBX.