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In a multi-organization environment like the GRID, each institute might want to apply some boundaries on how its resources are being utlized by other institutes. A disagreement between the multi-Virtual Organizations (VOs) might happen in the security aspect for the policy framework. Mobile Grid Services has given the ability to move jobs, data and application software from nodes to nodes during jobs...
A new methodology of distributed mobile geographic information system (GIS) grid model is studied based on mobile agent and grid computing environment. Key technologies are presented in the model, including mobile agent (MA) distributed computing, grid computing, mobile GIS, global positioning system (GPS), transfer control protocol/internet protocol (TCP/IP), and user datagram protocol (UDP). In...
In a volunteer-based Grid, the system must be heterogeneous, and the computation capability of each node varies, and load distribution or load balancing is one of the most important issues in Grid. Some techniques have been proposed for dynamic load distribution which relocates jobs, by migrating running jobs keeping their execution states, from a high-loaded node to a lower-loaded node during execution...
The mobility issue in grid environments has established new challenges to the research communities particularly in the areas of scheduling, adaptation, security and mobility. Especially, the resource allocation becomes more challenging when mobility is considered in grid environment. Hence it is necessary to consider the mobility of users along with the resource availability while scheduling the resources...
A new methodology of mobile police spatial information service grid model is studied based on spatial grid computing environment. Key technologies are presented in the model, including spatial grid computing, mobile agent (MA) distributed computing, mobile geographic information system (GIS), global positioning system (GPS), video monitoring, transfer control protocol/internet protocol (TCP/IP), and...
Hybrid service discovery is introduced as an efficient service discovery protocol in mobile ad-hoc grid witch has a good compromise between response time and network traffic overhead. In this paper we modify the basic idea of this protocol called Zone. We use multi-level zone in our proposal and called the protocol as multi-level hybrid service discovery protocol. Our algorithm tries to provide the...
Handheld devices such as mobile phone and PDA have become widespread in every areas of life. In higher education context, these devices can be transformed into mobile learning tools which students can use to download and study learning materials anytime and anywhere. MAVGRID is designed as a system that support ubiquitous learning environment or m-Learning (Mobile Learning) environment. It uses Grid...
In recent years, Network Virtualization has become a big issue which is utility computing, grid computing and cloud computing. Network virtualization provides the feasibility of running multiple architectures also, it can diversify the future Internet Architecture into separate virtual networks according to different applications and requirement. Previous researches focus on only virtual network in...
In recent years the Department of Defense has aggressively invested in development of an Internet Protocol (IP) based network that interconnects mobile air platforms and ultimately will also connect to the Global Information Grid (GIG) as part of its Net-Centric Warfare initiatives. One of the major visions for the IP based networks is to support interoperable voice communication amongst heterogeneous...
Composite applications consisting of multiple mobile services require intricate service management and security infrastructures. Grid based approaches to service management can be applied to provide such infrastructures to both support and secure users and services in these composite mobile applications. The Akogrimo project has applied WSRF based Service Oriented toolkits as the core element of a...
In location-based services (LBSs), users send location-based queries to LBS servers along with their exact locations, but the location information of the users can be misused by adversaries. In this regard, there must be a mechanism which can deal with the privacy protection of the users. In this paper, we propose a cloaking method considering both K-anonymity and L-diversity. Our cloaking method...
Spatial alarms are considered as one of the basic capabilities in future mobile computing systems for enabling personalization of location-based services. In this paper, we propose a distributed architecture and a suite of safe region techniques for scalable processing of spatial alarms. We show that safe region-based processing enables resource optimal distribution of partial alarm processing tasks...
In Location-Based Services (LBSs), users send location-based queries to LBS servers along with their exact locations, but the location information of the users can be misused by adversaries. For this, a mechanism to deal with the userspsila privacy protection is required. In this paper, we propose a new cloaking algorithm for privacy protection in LBSs. Our cloaking algorithm can support both k-anonymity...
In this paper we propose grid information service series model and system software architecture of mobile learning service, Mobile learning service is realized by WebService based on grid, which can provide a programming interface for the majority of the software vendors who develop education platform based on mobile learning technology. The service permits reusing not only the code but also the data...
The increasing availability of Web services and grid computing has made easier the access and reuse of different kind of services. Web services provide network accessible interfaces to application functionality, while grid computing enables the efficient distribution of computing resources and power. Mobile devices as a platform of computing have become a ubiquitous, inexpensive, and powerful computing...
This paper discusses the design of the embedded system for grid handtop computing (ESGHC), the implementation and the methods used in ESGHC. ESGHC applies the grid computing technology which is built under a grid environment for handtop devices. By having ESGHC, sharing of handtop devices in terms of computational power and storage are virtually possible. Besides, grid services can be accessed everywhere...
Extracting information or discovering knowledge from wireless or mobile grids is becoming increasingly important issues. Most researches in grid environment only consider data mining time. Other constraints, such as energy consumption and immediate bandwidth that are more important in the mobile computing will physically affect the performance and system availability. In this paper, we propose, based...
A data organization and access mechanism model of the spatial information grid is developed for effectively solving the spatial information share in pervasive computing environment. An architecture of campus location-based services based on grid geographical information system (CLGG) is proposed for services sharing, which composed of location tier, data tier, service tier and application tier. In...
Map service, the most frequently used service in mobile navigation application, is always the bottle-neck due to the continual map refresh, limitation capacity of wireless network and the vast data volume of the vector map. Data prefetching, responsible for fetching data from Map Server forehand, is considered to be an efficient way to increase map refresh. However, the sticking point is to decrease...
This research proposes job request management system (JRMS) which is robust against network coverage and battery power failure and manages the request messages on the local storage media while mobile disconnection or battery power failure. Password-based authentication system and lightweight Blowfish cryptography are used for secure data request transmission between the mobile device and the grid...
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