• Journal of the Korean Society for information Management
• /
• v.32 no.2
• /
• pp.221-236
• /
• 2015

This paper describes the process and methodology followed in developing the Android-based LG Sangnam Audiobook service and an evaluation of its usefulness to the public. The methods included a survey of user needs, analysis of usage statistics, and user interviews. The study found that visually impaired users: 1) were greatly interested and willing to use smartphones if there were no barrier in cost and access; 2) preferred downloads to streaming services; 3) did not mind performance differences between real and TTS (text-to-speech) voices; 4) showed marked differences in book preferences according to age, 5) made about 14,000 downloads in 2014; and 6) indicated bookmarking and moving between pages and tables of content as the most important functions in using audiobooks.

• Journal of the Korea Institute of Information Security & Cryptology
• /
• v.28 no.4
• /
• pp.827-838
• /
• 2018

Since 2014, ease of regulations on financial institutions expanded the mobile payment market based on simple authentication, and this resulted in the emergence of various simple payment services. Although several security solutions have been used to mitigate possible security threats to payment applications, there are vulnerabilities which can still be found due to the structure in which the security solution is applied to the payment service. In this paper, we analyze the payment application and security solution from the process perspective, and prove through experimentation that verification functions of security solutions can be bypassed without detailed analysis of each security function, but by simply manipulating the verification result value. Finally, we propose methods to mitigate the bypass method presented in this paper from three different perspectives, and thereby contribute to the improvement of security level of the payment service.

• Journal of Korea Society of Industrial Information Systems
• /
• v.16 no.5
• /
• pp.45-54
• /
• 2011

Currently various applications related to bus route are used on smart devices to obtain bus arrival times, and route information. However, applications are unable to provide various ways for users to provide their destination. This study has designed an algorithm based on user's six patterns. An Android application and a server that communicate with each other have been based on the algorithm. The applications and the server use the Google Maps service and location-based information to provide users with possible routes from the starting place to the destination. They also provide user's with users' current position and any transfer information. They provide practical and efficient information, and are easy to use.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2013.01a
• /
• pp.175-177
• /
• 2013

본 논문에서는 스마트폰의 장점인 언제 어디서나 편리하게 네트워크를 활용하여 인터넷 서비스를 사용 할 수 있는 점과 다양한 기능을 제공하는 애플리케이션 "나도 입대할래!"를 구현하여 사용자에게 편의제공을 할 수 있도록 하였습니다. 이 애플리케이션은 군대의 정보 중 입대 전 필요한 정보와 군대 생활에 필요한 정보를 사용자가 구분하기 쉽게 설명을 읽고 서로 동감할 수 있는 틀을 만들어 다양한 정보를 확인 할 수 있게 합니다. 구현된 애플리케이션은 기존에 있는 다른 군대 전용 애플리케이션과는 다르게 와이파이 서비스를 이용한 의사 소통공간을 제공하였고, 다양한 정보를 알려주고 군대의 즐거운 추억을 이야기 할 수 있게 합니다. 그 결과 본 논문에서 구현된 애플리케이션은 군 입대자와 부모님 또는 군대 생활에 관심이 있는 사람에게 정보교환을 다양하게 활용할 수 있는 정보교환의 장으로 기대됩니다.

• Journal of Fisheries and Marine Sciences Education
• /
• v.28 no.1
• /
• pp.172-179
• /
• 2016

The study of Mobile MGIS (Marine Geographic Information System) based on the Android Mobile Platform is mainly performed on effective methodologies which transform real world data to computing world data. Mobile GUI system has its own target on reliable data service by acquisition of geometric information using EFDC (Environmental Fluid Dynamics Code) Model, accurate measurement and graphical visualization. Even simple visualizations can aid in the interpretation of complex hydrodynamic relationships that are frequently encountered in the marine environment. The Mobile MGIS provides an easy way for hydrodynamics geoscientists to construct complex visualizations that can be viewed with free software. This study proposes a Mobile GUI MGIS using EFDC Model result of Seomjin River estuary. Finally, we design a Seomjin River estuarine Coastal Waters Mobile MGIS integrating above data models. It must adds more ecological information and the various service item for approach more easily in order to user.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2013.10a
• /
• pp.470-473
• /
• 2013

지금 우리가 살고 있는 대한민국은 공정한 사회를 지향하고 있고, 사회 각 분야에서는 이를 위한 다양한 대책과 방안을 수립하는 중이다. 경제적 비용이 발생하는 분야의 업무에서는 다른 분야 보다 더 완고하게 공정한 비용 지급을 위한 방안 대책을 수립하고 있다. 대표적 사례로 정부기관의 관용차량의 유류비 지급부분이다. 기존의 유류비 지급 시스템에서 유류사용을 올바르게 사용하였는지 근거가 되는 정보가 없어 유류비를 청구하는 사람의 양심에 의존해야 한다. 본 논문에서는 ICT(Information and Communication Technology)기술을 활용하여 자동차 유류비 및 유지보수비용을 공정하게 지급 할 수 있도록 돕는 목적을 가진 시스템을 설계하였다. 본 논문의 시스템은 주행중 자동차의 주행정보(주행위치 및 자동차 내부정보)를 전용단말기(Android 기반)에서 수집하고 인터넷을 이용해 실시간으로 서버로 전송하고, 인터넷 웹사이트를 통해 해당단체 및 개인에게 실시간 및 이전 주행정보 데이터를 제공한다. 수집된 주행정보 데이터를 분석하여 자동차 유류비 및 유지보수비용을 올바르게 지급할 수 있게 도와주는 시스템을 설계하기 위한 내용을 다룬다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2010.10a
• /
• pp.672-674
• /
• 2010

There are various ways for expressing map on android system. The typical method is to use the API provided by Google, called geocoding although simple display of location of GPS is possible, but node expression of road or the detail information on map for various location service are not available. And it is difficult to express a location in shadow area. In this paper, to solve these problems, we propose a map expression method for location service in specific area based on geocoding and apply the method.

• Journal of Korea Multimedia Society
• /
• v.18 no.11
• /
• pp.1351-1357
• /
• 2015

This paper proposes and implements a mobile service and web service integration for utilizing public bicycle sharing system NUBIJA. The NUBIJA system is operated by Changwon City, GyeongNam since 2008 and maintains 247 unattended bicycle sharing terminal on the city. Average users per day of the NUBIJA are more than 8,000 and many users want to get more services from their mobile phones. We implemented realtime mobile bicycle rental and return information service. The informations are acquired from each terminal kiosks and we integrated the information and location based services(LBS) on iOS and Android platform. In this paper, we described an integration services between web and mobile application and shows graphical user interface for highly customized on mobile platforms.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.38B no.8
• /
• pp.654-662
• /
• 2013

Android applications can be easily decompiled owing to their structural characteristics, in which applications are developed using Java and are self-signed so that applications modified in this way can be repackaged. It will be crucial that this inherent vulnerability may be used to an increasing number of Android-based financial service applications, including banking applications. Thus, code obfuscation techniques are used as one of solutions to protect applications against their forgery. Currently, many of applications distributed on Android market are using ProGuard as an obfuscation tool. However, ProGuard takes care of only the renaming obfuscation, and using this method, the original opcodes remain unchanged. In this paper, we thoroughly analyze obfuscation mechanisms applied in ProGuard, investigate its limitations, and give some direction about its improvement.

• Journal of the Korea Convergence Society
• /
• v.1 no.1
• /
• pp.23-29
• /
• 2010

The various kinds of application is distributed for the Smart phone user recently. There is the advantage that the open source application on Android operating system based Smart phone supports a multi tasking service. Layar, Wikitude, and Sherpa and the other applications using the GPS location information like an a2b etc. were developed in the Smart phone environment. However, the existing Cell-ID based location information can be directly collected by the mobile ISP unit which the mobile carrier installs, the personal privacy problem occurs. Therefore, the personal location information is possible to be exposed publicly without any access control procedure. Therefore, in this research, the self-control mechanism on the GPS location information at the Smart phone is designed and presented. Through this, it is possible to develop diverse applications providing enhanced access control and GPS location management on the Android based Smart Phone.