• The KIPS Transactions:PartC
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• v.19C no.4
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• pp.235-238
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• 2012

Google Android provides market based application distribution to provide ease use of application services. While openness of Android allows various ways of application distribution, including installation of unsigned application. such openness also invokes critical threats such as the spread of malwares and the illegal distribution of applications. In order to prevent such threats, several distributors use on-line authentication techniques by using mobile subscriber's information. However such methods also have limits that even legal users cannot use their purchased application in situations. Therefore, in this paper, we discuss such problems and provide some ideas of authentication method that allow users to use their purchased application when users change their status.

• Journal of Internet of Things and Convergence
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• v.6 no.2
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• pp.1-10
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• 2020

The mobile application based on the Android platform is simple to decompile, making it possible to create malicious applications similar to normal ones, and can easily distribute the created malicious apps through the Android third party app store. In this case, the Android malicious application in the smartphone causes several problems such as leakage of personal information in the device, transmission of premium SMS, and leakage of location information and call records. Therefore, it is necessary to select a optimal model that provides the best performance among the machine learning techniques that have published recently, and provide a technique to automatically identify malicious Android apps. Therefore, in this paper, after adopting the feature engineering to Android apps on official test set, a total of four performance evaluation experiments were conducted to select the machine learning model that provides the optimal performance for Android malicious app detection.

• ETRI Journal
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• v.35 no.2
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• pp.259-269
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• 2013

Android has become the most popular platform for mobile devices. However, Android still has critical performance issues, such as "application not responding" errors and hiccups resulting from garbage collection. Many phone vendors have tried to resolve the problems by characterizing and improving the performance. However, there are few insightful performance analysis tools for the Android-based systems. This paper presents AndroScope, which is a performance analysis tool for both the Android platform (Dalvik virtual machine, core libraries, Android libraries, and even Linux kernels) and its applications. To the best of our knowledge, this is the first tool to collect and analyze performance data from all the software layers of the Android-based systems. AndroScope offers a trace mechanism to collect such deep and wide performance data as hardware performance counters, time, and memory usage. In addition, the tool includes TraceBridge, which is a middleware for the fast handling of mass logs. Moreover, AndroScope offers an integrated graphical user interface with the Android software development kit to display a great volume of the detailed performance data.

• Journal of Fisheries and Marine Sciences Education
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• v.23 no.2
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• pp.234-243
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• 2011

Mindmap is effective method to analyze informations. And, through mindmap, students can be able to grow their ability of logical reconstruction. In Modern society, people have been developing IT technology and variety of portable devices. So, Educational environments have been being changed accordingly, too. In this study, we have implemented mindmap application that based on android to share the group member's thinking. To effective sharing, we have used mindmap technique and photo attachment feature. In this study, expert evaluation has been carried out by elementary current teachers. In result of this expert evaluation, we have obtained positive feedback at sharing function, input technique and information display. Also, teachers have gave feedbacks that they are willing to use this application in class, if classroom environment is possible.

• Journal of Institute of Control, Robotics and Systems
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• v.18 no.11
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• pp.1018-1026
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• 2012

This paper presents a developing method of smart fingerprint recognition system. First, we design a hardware configuration circuit using a 32bit Risc CPU, a fingerprint sensor, a LCD, and a WiFi communication chip to realize the smart fingerprint recognition systems. It is necessary to develop a JNI (Java Native Interface) library and a device drive program of fingerprint sense to develop application program of fingerprint recognition system with Android platform. Thus second, we develop a device drive and a JNI program. And we also develop an application program of fingerprint recognition systems using developed JNI library. Finally test results are presented to illustrate the performance of the developed smart fingerprint recognition system.

• Journal of the Korean Institute of Intelligent Systems
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• v.21 no.5
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• pp.588-594
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• 2011

This paper presents the development of application and management system for guiding job information based on android smart-phone. The real-time informations which are provided from the job portal site, become known by using the smart-phone, and the sever system for saving and managing the related informations has been implemented. Especially, the relay and synchronization protocol of job informations have been designed and the system for managing a transmitting and receiving information is also designed and modelled. The developed application has been made up for and registered in the application store for making good use.

• Journal of the Korea Society of Computer and Information
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• v.21 no.11
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• pp.59-64
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• 2016

In this paper, we design and implement an Application based on android platform, which can control arduino Prime Smart Car using Bluetooth communication. This Application consist of Bluetooth communication module, manual mode module, and line-tracer mode module. In the Bluetooth communication module, it checks the on/off status of Smartphone Bluetooth. If Bluetooth status is off, it activates Bluetooth, selects the corresponding device from Bluetooth device list, and connects with a pair. In order to reduce coding time, we implements Bluetooth communication using inherited class from android Bluetooth package. In the manual mode module, it implements six direction moving button and stop button, which can control arduino Prime Smart Car. In the line-tracer mode module, it implements Prime Smart Car with self-driving function using TCRT5000 sensor. And moving button and stop button is disabled.

• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.10
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• pp.1515-1521
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• 2013

In this paper, we develop the power management application of the Android operating system that works with a intelligent concent having the functions to protect resistive leakage current, over-current and standby power. Using this power management application a user monitors electrical fire, shock from a concent due to leakage current, can control home appliances by controlling the power supplied to the concents and can easily protect wasted standby powers, anytime and anywhere.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.75-77
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• 2011

A simulator in Android is developed for Qualcomm Augmented Reality (QCAR) software development kit (SDK). The main purpose is to replace the testing of application on actual Android device. Bugs in the application can be found easily when testing is done in the simulator (with support of Android emulator) before the testing on real device. The simulator does not require a camera in testing augmented reality application. Works included study on QCAR SDK's behavior is done to ensure that the simulator performs similar to the SDK. Description on how would the simulator works with QCAR SDK is included in the paper.

• Journal of Korea Society of Digital Industry and Information Management
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• v.6 no.3
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• pp.169-177
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• 2010

As expectations about success of smart phones that install Android, an open mobile platform which was developed by Google, are increasing, the development of applications based on the Android has attracted a lot of interest. Especially, game applications have been well received by users. In this paper, we develop an application based on the Android for curling which was adopted as a competitive sport in the Winter Olympic Games. Curling is a sport game played by two teams. The rules of the game are simple, but it is an intelligent one that requires various strategies for victory. In this paper, the curling game based on the Android provides functions, such as pitching, sweeping, collision, and foul handling, that are required in real curling game by using technologies, such as touch screen or accelerometer sensor.