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The modern digital world is immersed in tons of information in the form of electronic documents. To overcome the consequences of system failure, the fault tolerance system uses redundant information too. While surfing in the mobile devices, since they have small display screen. The mobile users prefer to analyse the summarized report, if it is relevant to their requirement, the user may observe it...
With the development of mobile web integration technologies and wireless sensor networks, the interactive activities of human society increasingly rely on the heterogeneous network environment including the communication network, the Internet and sensor networks. This paper tries to apply socially aware computing and data mining to the mobile web application integration technology. It emphasizes understanding...
We have established a multi-walker recognition/tracking testbed based on low-cost pyroelectrc sensor network (PSN). In order to identify a region of interest (Rol) in the monitoring area for the detection of any interesting mobile targets, we propose to use Bayesian machine learning and binary signal projection to extract the statistical contextual features from real-time, high-dimensional PSN data...
In this paper, we extend the interconnection and damping assignment passivity-based control strategy to systems subjected to nonholonomic Pfaffian constraints. The results are applied to stabilize the pitch dynamics of an underactuated mobile inverted pendulum (MIP) robot subjected to nonholonomic constraints arising out of no-slip conditions. A novel feature of this paper is that we reduce the kinetic...
In recent years, advances in hardware technology have facilitated the ability to collect data continuously. Simple transactions of everyday life such as using a credit card, a phone or browsing the Web lead to automated data storage. In this paper, we are focuses on finding frequent itemsets over ubiquitous data streams. The proposed method shows that false negative oriented approach that allows a...
Mobile users are often involved in team activities and exhibit collaborative mobility in realistic ad hoc network application scenarios. Due to diverse group mobility patterns, the network may remain partitioned for extended durations. This paper describes an approach to reduce the communication disruptions by deploying forwarding nodes. The forwarding nodes explore the field periodically in orderto...
In multi-hop relay network, there may be several Relay Nodes(RNs) subordinated to the base station(BS) in a cell. When an user equipment (UE) moves from one cell to another, or an UE moves between two different RNs, a handover will happen. Since the coverage of a relay is small, the handover between two RNs or RN and base station (BS) maybe happen frequently. In terms of whether the UE is located...
OMA-Digital Rights Management System is a standard proposed by Open Mobile Alliance for protecting digital content distributed through mobile networks. In such a system, licenses are written in an appropriate language and used to ensure the fine grained consumption of contents. We claim that the Rights Expression Language (OMA-REL) does not rely on formal semantics. To address this problem we propose...
Geocasting is a mechanism to disseminate data messages within a certain geographical region. Since packet forwarding is based on the location information of nodes, it is known to reduce the path maintenance cost significantly. The geocasting can be suitable for several applications in tactical ad hoc networks, such as an event to alarm enemy's missile attack, guerilla appearance, or local weathercast...
Ultrasonic local positioning systems (US-LPS) utilize hyperbolic trilateration to avoid the necessity of synchronizing the beacons and the tag. In actual systems the beacons emit coded signals which are processed in the tag to obtain the time-differences of arrival, with one of the beacons as reference. The absolute position is computed using an iterative method to solve the non-linear equation system...
Mechanisms for allocation of one or many goods to a number of agents are proposed in this paper. The goal is to propose mechanisms in a general setting where the goods might be divisible or indivisible. A mechanism in the Groves class that is dominant strategy incentive compatible and almost budget balanced is obtained. In the case of one or more indivisible goods, the proposed mechanisms fall back...
When building topic based document classifiers, feature selection is a key step: features not holding any information about the topic of a document introduce only unnecessary noise during the classification. In a distributed environment, when the nodes are interacting, the locally retrieved features and the their attributes must be shared to have at every node a more accurate estimation of the global...
Self organizing network (SON) functionalities are currently developed to improve network performance and management tasks. SON functionalities require efficient utilization of data extracted from the network. In this context, the paper has two objectives. First it is shown that one can use simple statistical learning techniques such as regression to extract a model from data. The model comprises closed...
The rate equation of solute migration for a gas-solid chromatography was derived from Maxwell distribution of energy and the principle of equipartition of energy. Different from two-phase distribution ratio being used to explain the retention time of solute in plate theory, the retention time was explained with the activation energy of migration from a new and kinetic viewpoint. According to the derivation...
In this paper, we focus on proactive radio resource management schemes that retain the quality of the individual connections by pre-reserving the needed resources in a cellular network. We propose a new scheme, which improves older proactive solutions. Typically, in such solutions an improvement in call dropping probability negatively impacts new call blocking probability. We improve this framework...
This paper presents a new algorithm to obtain the position of a mobile with an ultrasonic local positioning system (US-LPS). The system consists of five beacons placed in the ceiling covering a wide working area. The simultaneous emissions of all the beacons are synchronized, and encoded by using a DS-CDMA technique with five different 255-bit Kasami sequences. A receiver is placed on the mobile to...
The performance of passive and active scanning is analyzed for wireless LAN, during handoff search phase based on the IEEE 802.11b standard. The performance analysis indicates that the active scanning method is faster and works well if the number of mobile stations is less than 15. Active scanning can reduce the search phase time to 55% compared to that of passive scanning, for 10 mobile stations...
In this article the model of central network element home location register/home subscriber server (HLR/HSS) in mobile networks GSM and UMTS is presented. The model is based on queueing discipline earliest deadline first (EDF). The EDF method operates with dynamical priorities and takes into account the deadlines of arriving tasks. Moreover, focused on the considered case of HLR/HSS, the approach...
Using the technology acceptance model (TAM) and the revised TAM, this research investigates the effects of gender differences on purchase intention of mobile data services (MDS). The hypotheses are tested on a sample of 1141 individuals, using the data-processing tools AMOS 6.0 and SPSS 15.0. The results indicate that women and men evidently differ in their perceptions of ease of use and security...
This work focuses on a class of distributed storage systems whose content may evolve over time. Each component or node of the storage system is mobile and the set of all nodes forms a delay tolerant (ad hoc) network (DTN). The goal of the paper is to study efficient ways for distributing evolving files within DTNs and for managing dynamically their content. We specify to dynamic files where not only...
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