• Title/Summary/Keyword: Mobile Transactions

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A Secure Mobile Agent Transfer Protocol in Mobile Agents Based E-Commerce System (이동 에이전트 기반 저자사걸 시스템에서의 안전한 이동 에이전트 전송 프로토콜)

  • Han, Seung-Wan;Im, Hyeong-Seok
    • The Transactions of the Korea Information Processing Society
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    • v.7 no.5S
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    • pp.1657-1665
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    • 2000
  • Mobile agents based e-commerce system has many advantage than traditional e-commerce-information gathering on goods, price settlement and payment, delivery of the goods purchased, and so on. However, due to the security vulnerability that stems from mobile agent's mobility, mobile agents based e-commerce system has additional security problems. Therefore, in order to do e-commerce securely in th system, first of al the security issues on mobile agents must be addressed. It this paper, we propose a mobile agent transfer protocol that provides confidentiality and integrity of mobile agent in transit and mutual authentication for communicating hosts. We further show the security of the protocol against many possible attacks. Also, we suggest the location management mechanism of mobile agents based on the trust center. This mechanism is capable of finding their locations transparently and detecting mobile agent clones.

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Formation Control of Mobile Robot for Moving Object Tracking (이동물체 추적을 위한 이동로봇의 대형제어)

  • Oh, Young-Suk;Lee, Chung-Ho;Park, Jong-Hun;Kim, Jin-Hwan;Huh, Uk-Youl
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.4
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    • pp.856-861
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    • 2011
  • The mobile robot controller is designed to track the target and to maintain the formation at the same time. Formation control is included in mobile robot controller by extending the trajectory tracking algorithm. The dynamic model of mobile robot is used with kinematic model considering the practical physical parameters of mobile robot. The dynamic model of mobile robot transforms velocity control input of kinematic model into torque control input which is the practical control input of mobile robot. Formation controller of mobile robot is designed to satisfy Lyapunov stability by backstepping method. The designed formation controller is applied to the mobile robot for various target movements and simulated to confirm the Lyapunov stability.

The Study on the OLSR(Optimized Link State Routing Protocol) Implementation in the Mobile Ad-hoc Network (모바일 에드혹 네트워크의 OLSR(Optimized Link State Routing Protocol) 구현에 관한 연구)

  • Cho, Tae-Kyung;Lee, Jea-Hee
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.60 no.4
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    • pp.257-261
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    • 2011
  • In this paper, we research the OLSR(Optimized Link State Routing Protocol) of the mobile ad-hoc network protocols, and design the system implementation based on the Embedded Linux for the Ubiquitous Space construction. We prove the performance of proposed system in the various experiment environments through several scenarios which is about transmitting the image data on the mobile ad-hoc network environment.

Obstacle Avoidance of Autonomous Mobile Agent using Circular Navigation Method (곡률 주행 기법을 이용한 무인 이동 개체의 장애물 회피 알고리즘)

  • Lee, Jin-Seob;Chwa, Dong-Kyoung;Hong, Suk-Kyo
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.58 no.4
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    • pp.824-831
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    • 2009
  • This paper proposes an obstacle avoidance algorithm for an autonomous mobile robot. The proposed method based on the circular navigation with probability distribution finds local-paths to avoid collisions. Futhermore, it makes mobile robots to achieve obstacle avoidance and optimal path planning due to the accurate decision of the final goal. Simulation results are included to show the feasibility of the proposed method.

A Posture Control for Two Wheeled Mobile Robots

  • Shim, Hyun-Sik;Sung, Yoon-Gyeoung
    • Transactions on Control, Automation and Systems Engineering
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    • v.2 no.3
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    • pp.201-206
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    • 2000
  • In this paper, a posture control for nonholonomic mobile robots is proposed with an empirical basis. In order to obtain fast and consecutive motions in realistic applications, the motion requirements of a mobile robot are defined. Under the assumption of a velocity controller designed with the selection guidance of control parameters, the algorithm of posture control is presented and experimentally demonstrated for practicality and effectiveness.

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Effective Navigation of a Mobile Robot Using Guide-Marks Sensed through Vision (사각장치에 의해 감지된 가이드 마크를 이용한 이동 로보트의 효과적인 항법)

  • ;;;ZeungNam Bien
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.38 no.12
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    • pp.963-970
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    • 1989
  • The navigation problem for a mobile robot is investigated. Specifically, it is proposed that simple guide-marks be introduced and the navigation scheme be generated in conjunction with the guide-marks sensed through camera vision. For autonomous navigation, it was shown that a triple guide-mark system is more effective than a single guide-mark in estimating the position and orientation of mobile robot itself. The navigation system is tested via a mobile robot HERO-I equipped with a single camera in laboratory environment.

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A Study on Necessity of System for mediating transactions of a mobile gift certificate (모바일 상품권 거래 중개 시스템의 필요성에 관한 연구)

  • Bae, Yu-Mi;Jung, Sung-Jae;Lee, Kwang-Yong;Jang, Rae-Young;Lee, Jae-Ung
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2016.05a
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    • pp.185-188
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    • 2016
  • The percentage share of mobile gift card certificate in the gift card market has increased significantly each year. But from a consumer perspective mobile gift card certificate has several problems. Specifying unfair terms in Fair Trade Commission has improved slightly, but the problem is not replaced with the equivalent authority that issued the vouchers can not be solved. The exchange between users the most realistic way to solve this problem is to create an environment as possible. In conclusion, The deal will be possible to build a mobile gift card certificate brokerage trading in a convenient and reliable P2P-based. If the System for mediating transactions of a mobile gift certificate has created a healthy retail environment, such as the expansion of the voucher market, reduce social costs may be creating.

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A Data Gathering Approach for Wireless Sensor Network with Quadrotor-based Mobile Sink Node

  • Chen, Jianxin;Chen, Yuanyuan;Zhou, Liang;Du, Yuelin
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.6 no.10
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    • pp.2529-2547
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    • 2012
  • In this paper, we use a quadrotor-based mobile sink to gather sensor data from the terrestrial deployed wireless sensor network. By analyzing the flight features of the mobile sink node, we theoretically study the flight constraints of height, velocity, and trajectory of the mobile sink node so as to communicate with the terrestrial wireless sensor network. Moreover, we analyze the data amount which the mobile sink can send when it satisfies these flight constraints. Based on these analysis results, we propose a data acquisition approach for the mobile sink node, which is discussed detailed in terms of network performance such as the transmission delay, packet loss rate, sojourning time and mobile trajectory when given the flying speed and height of the mobile sink node. Extensive simulation results validate the efficiency of the proposed scheme.

Design and Prototyping of Partial Connection Manager for Mobile Computing Service (이동 컴퓨팅 서비스를 위한 부분 연결 관리자의 설계 및 프로토타입핑)

  • Kim, Pyeong-Jung;Yun, Seok-Hwan;Jin, Seong-Il
    • The Transactions of the Korea Information Processing Society
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    • v.7 no.6
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    • pp.1932-1940
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    • 2000
  • We must solve problems caused by mobile computing environments for supporting efficient mobile computing services. The problem is the use of wireless medium having high error rates and low bandwidth, and the sudden network disconnection to reduce the power consumption of a mobile host and the cost of the network connection. For these problems, we proposed the architecture of the partial connection manager and designed and implemented that in this paper. In particular, The partial connection manager creates the limited number of mobile agents according to priority and sends them in parallel to server systems and combines results of them process rapidly the user request. By applying the proposed partial connection manager to the mobile computing services called cybermarket, we knew that the mobile agent technique could be suited to the mobile computing environment and overcome the partial connection problem caused by eh mobile computing environment.

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An Automatic and Scalable Application Crawler for Large-Scale Mobile Internet Content Retrieval

  • Huang, Mingyi;Lyu, Yongqiang;Yin, Hao
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.12 no.10
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    • pp.4856-4872
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    • 2018
  • The mobile internet has grown ubiquitous across the globe with the widespread use of smart devices. However, the designs of modern mobile operating systems and their applications limit content retrieval with mobile applications. The mobile internet is not as accessible as the traditional web, having more man-made restrictions and lacking a unified approach for crawling and content retrieval. In this study, we propose an automatic and scalable mobile application content crawler, which can recognize the interaction paths of mobile applications, representing them as interaction graphs and automatically collecting content according to the graphs in a parallel manner. The crawler was verified by retrieving content from 50 non-game applications from the Google Play Store using the Android platform. The experiment showed the efficiency and scalability potential of our crawler for large-scale mobile internet content retrieval.