• Title/Summary/Keyword: Mobile System Framework

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Enhanced ANTSEC Framework with Cluster based Cooperative Caching in Mobile Ad Hoc Networks

  • Umamaheswari, Subbian;Radhamani, Govindaraju
    • Journal of Communications and Networks
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    • v.17 no.1
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    • pp.40-46
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    • 2015
  • In a mobile ad hoc network (MANET), communication between mobile nodes occurs without centralized control. In this environment the mobility of a node is unpredictable; this is considered as a characteristic of wireless networks. Because of faulty or malicious nodes, the network is vulnerable to routing misbehavior. The resource constrained characteristics of MANETs leads to increased query delay at the time of data access. In this paper, AntHocNet+ Security (ANTSEC) framework is proposed that includes an enhanced cooperative caching scheme embedded with artificial immune system. This framework improves security by injecting immunity into the data packets, improves the packet delivery ratio and reduces end-to-end delay using cross layer design. The issues of node failure and node malfunction are addressed in the cache management.

Technological Standardization in Mobile Telecommunication Industry: A Comparative Study (이동통신산업의 기술표준화에 관한 연구: 국가간 비교를 중심으로)

  • Ko, Yong-Su
    • Journal of Science and Technology Studies
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    • v.8 no.2
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    • pp.83-108
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    • 2008
  • A analytical framework is suggested to explain how different standardization each country makes with incorporation of institutional elements such as the state's intervention and inter-firm relations which are considered to have a significant effect on it. Application to mobile telecommunication industry of the framework shows that different innovation system has its own technological standardization. In isolated inter-firm relation system, standardization is achieved through market but in cooperative one, through coordinating activities between participant firms. The state, however, intervenes more deeply in standardization and inter-firm relations are shorter in state-led and isolated firm relation system than in state-led and cooperative firm relation system.

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Active Rule Manager for the Mobile Agent Middleware System

  • Lee, Yon-Sik;Cheon, Eun-Hong
    • Journal of the Korea Society of Computer and Information
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    • v.21 no.10
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    • pp.99-105
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    • 2016
  • The active rule system is a key element of the rule-based mobile agent middleware system for activeness and autonomy of the sensor network. The rule manager, which is the main components of active rule based mobile agent framework and active rule system, performs the control and management of the rule-related processes. In this paper, we design and implement the roles and functions of the rule manager in detail. The proposed rule manager plays an important role in the sensor network environment. The sensor data server loads the active rule on the mobile agent by the rule manager according to the situations, and the mobile agent migrates to the destination node and performs the designated action. This active rule-based mobile agent middleware system presents the usefulness for the various sensor network applications. Through the rule execution experiment using the rule-based mobile agent, we show the adaptability and applicability of rule-based mobile agent middleware system to the dynamic environmental changes in sensor networks.

Design and Implementation of a Simulation Framework for Wireless Data Broadcasting based on Data ID Space Partition

  • Im, Seokjin
    • International journal of advanced smart convergence
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    • v.7 no.4
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    • pp.10-18
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    • 2018
  • For the information services supporting requests of data items from a great number of mobile clients, wireless data broadcasting is an effective way because it can accommodate any number of clients. In the wireless data broadcasting, various air indexing schemes and data scheduling schemes have been developed in order to enable the clients to access their desired data items efficiently. The broadcasting system needs a method to simulate newly designed air indexing and scheduling schemes of the system, and to evaluate the performance parameters of the schemes. In this paper, we design an expandable and efficient simulation framework for the wireless data broadcasting based on the partition of data ID space. The framework can adopt regular and irregular space partition and evaluate various performance parameters of the broadcasting system. We implement a testbed of the broadcasting system using the framework, that adopts IIP, GDI and EXP as its air indexing schemes. We simulate the system using the testbed and evaluate the performance parameters of the system. Thus, we show the efficiency and expandability of the designed and implemented framework.

A Simulation Framework for Mobile 3D Graphics Architecture (모바일 3차원 그래픽 아키덱쳐를 위한 시뮬레이션 프레임웍)

  • Lee Won-Jong;Park Jeong-Soo;Han Tack-Don
    • Proceedings of the Korean Information Science Society Conference
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    • 2006.06a
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    • pp.226-228
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    • 2006
  • In this paper we describe a simulation and development framework for designing mobile 3D graphics architectures. We are developing a simple and flexible simulation and verification environment (SVE) that uses gITrace's ability to intercept and redirect an OpenGL/ES streams. In combination wlth gITrace to trace OpenGL/ES commands, the SVE simulates the behavior of mobile 3D graphics pipeline during playback of traces, and then produces the second geometry trace that can be used as a test vector for the Verilog/HDL RT-level model. By comparing the frame-by-frame results, we can conduct architectural verification. To demonstrate the functionality of the SVE, we show the implementation of the verified mobile 3D architecture on a FPGA board. For this, we also present an application development environment (ADE) includes a mobile graphics API and a device driver interface (DDI). The proposed two software environments, the SVE and the ADE could be used fer developing and testing mobile applications, architectural study and speculative hardware designs.

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Development of a Field-Experiential Learning Framework using Location Based Mobile-learning AR System (이동성 위치기반 증강현실(LBMS-AR)시스템 적용 현장체험 학습활동 프레임워크 개발)

  • Cho, Jae Wan;Kim, Eun Gyung
    • Journal of Information Technology Services
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    • v.18 no.5
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    • pp.85-97
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    • 2019
  • In this study, we developed the Field-Experiential Learning Framework Using the Location Based Mobil-learning System (LBMS) and it is mobile Augmented Reality (AR) for smart learning system which is advanced e-learning. AR is technology that seamlessly overlays computer graphics on the real world. LBMS-AR has become widely available because of mobile AR. Mobile AR is possible to get information from real world anytime, anywhere. Nowadays, there are various areas using AR such as entertainment, marketing, location-based AR. We analysed the result of survey and implemented the functions. Also, for survey about application's effectiveness, we have focus group interview (FGI). Then we demonstrated and explained the application to them. The result of survey about application's effectiveness shows that application have higher utilization in education area. One of the most promising areas is education. AR in education shows lifelike images to users for realism. It's a good way for improving concentration and attention. We utilize only a beacone for image-based AR without other sensor.

Exploratory Autopsy on Digital Payment Models

  • Wang, Tao;Kim, Chang-Su;Kim, Ki-Su
    • 한국경영정보학회:학술대회논문집
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    • 2007.06a
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    • pp.646-651
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    • 2007
  • Secure digital payment is critical in the successful shaping of global digital business. Digital payments are increasingly being used as a substitute to traditional payments, contributing markedly to the efficiency of the economy. The focus of every digital business transaction is to minimize risks arising from transactions. It is essential to ensure the security of digital payment whether used in internal networks or over wireless Internet. This paper analyses secure digital payment methods from the viewpoint of systemic security and transaction security. According to comparative analysis of digital payment models, this paper proposes a comparative analysis framework to investigate and evaluate secure digital payment. In conclusion, the comparative analysis framework, comparison of digital payment models and mobile payment models proposes a useful academic and practical foundation to enhance the understanding of secure digital payment methods. It also provides academic background and practical guidelines for the development of secure digital payment systems.

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A Design and Implementation of Mobile Game Based on Windows Phone Platform (Windows Phone Platform 기반의 모바일 게임 설계 및 구현)

  • Park, Jin-Yang
    • Journal of the Korea Society of Computer and Information
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    • v.19 no.10
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    • pp.91-97
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    • 2014
  • In this paper, we design and implement a mobile game based on windows phone platform. Visual Studio and the Windows Mobile software development kit(SDK) and developer tool kits (DTK) make it possible to create software for the Windows Mobile platform in Visual C#. Also The XNA Framework is the set of .NET libraries that developers will code against to build games. XNA Framework support PC and XBOX and a ZUNE HD multiplex platform environment and 2D and 3D games provides the necessary functions to a development. XNA Framework is to make it easier to develop games because the codes which are succeeded creates with automatic, implements a game development relation resource and the game logic. The key idea of our game is that we use shooting and ranking system to raise fun.

Person Tracking by Detection of Mobile Robot using RGB-D Cameras

  • Kim, Young-Ju
    • Journal of the Korea Society of Computer and Information
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    • v.22 no.12
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    • pp.17-25
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    • 2017
  • In this paper, we have implemented a low-cost mobile robot supporting the person tracking by detection using RGB-D cameras and ROS(Robot Operating System) framework. The mobile robot was developed based on the Kobuki mobile base equipped with 2's Kinect devices and a high performance controller. One kinect device was used to detect and track the single person among people in the constrained working area by combining point cloud data filtering & clustering, HOG classifier and Kalman Filter-based estimation successively, and the other to perform the SLAM-based navigation supported in ROS framework. In performance evaluation, the person tracking by detection was proved to be robustly executed in real-time, and the navigation function showed the accuracy with the mean distance error being lower than 50mm. The mobile robot implemented has a significance in using the open-source based, general-purpose and low-cost approach.

Adaptive Multi-view Video Service Framework for Mobile Environments (이동 환경을 위한 적응형 다시점 비디오 서비스 프레임워크)

  • Kwon, Jun-Sup;Kim, Man-Bae;Choi, Chang-Yeol
    • Journal of Broadcast Engineering
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    • v.13 no.5
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    • pp.586-595
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    • 2008
  • In this paper, we propose an adaptive multi-view video service framework suitable for mobile environments. The proposed framework generates intermediate views in near-realtime and overcomes the limitations of mobile services by adapting the multi-view video according to the processing capability of a mobile device as well as the user characteristics of a client. By implementing the most of adaptation processes at the server side, the load on a client can be reduced. H.264/AVC is adopted as a compression scheme. The framework could provide an interactive service with efficient video service to a mobile client. For this, we present a multi-view video DIA (Digital Item Adaptation) that adapts the multi-view video according to the MPEG-21 DIA multimedia framework. Experimental results show that our proposed system can support a frame rate of 13 fps for 320{\times}240 video and reduce the time of generating an intermediate view by 20 % compared with a conventional 3D projection method.