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This paper presents an effective content replication scheme for peer-to-peer online social networks (P2P-OSN). The topology of P2P-OSN is defined by the social network of the participants. P2P-OSN allow people to share content and run applications with their 1-hop friends in decentralized fashion, while denying access to their potentially private data to other users. Content replication in these networks...
The work by Uthayanath Suthakar was supported by a Brunel University London College of Engineering, Design and Physical Sciences Thomas Gerald Gray postgraduate research scholarship. Uthayanath Suthakar also acknowledges the IEEE NSS-MIC for financial support in the form of a Trainee Grant.
Bit by bit analysis and research on big data has become a hot cake for many organisations and can be more helpful for the industries like banking, e-commerce, insurance, manufacturing etc. to facilitate their customers. Traditionally, when the data was low in volume, it was easily managed and processed by traditional technologies. These technologies are incapable of handling it as big data differs...
An enormous amount of electricity is ingested in illuminating the roads and streets of many countries and states in order to avoid the Accidents and Crimes respectively. Although, Vehicles moving through these portions of roads and streets are low in rate and moves from these roads and streets over a specific time period. These parts of roads and streets are not every time engaged with vehicles. In...
DC microgrid has become a preferred choice over AC microgrid, due to the growth of critical DC loads and higher efficiency during power distribution. However, the transient behavior of DC microgrid is more severe than AC microgrid, which makes the correct DC Circuit Breaker (DCCB) selection very important. In this research paper, we have proposed an evaluation method to select a commercially available...
In this paper, the identification of equivalent circuit parameters of a doubly-fed induction generator (DFIG) is investigated. To date, several methods have been presented to identify or estimate induction machine (IM) parameters by using IEEE Std. 112. However, for accurate results using this standard, adjustments according to the machine's design are required. This paper presents adjustments for...
Pressure ulcers pose a huge financial burden on the economy. Pressure ulcers cost between $9.1 to 11.6 billion a year in the United States. Each individual pressure can cost from $20,900 to $151,700 per pressure ulcer. Wheelchair users with spinal cord injury have a higher risk of developing pressure ulcers due to limited mobility and the countless hours they spend in the wheelchair, exerting pressure...
Low-cost carbons derived from recycled materials have been gaining attention recently for their potentials as filler in composites and in other applications. Biochar is one such carbon produced from the pyrolysis of biomasses or other biogenic wastes. In this work, biochar and activaed biochar were used as filler (20 wt%) to produce Epoxy resin-based composites. The activated biochar (12.5 wt%) was...
A 2.5MW doubly-fed induction generator (DFIG) and a cascade doubly-fed induction generator (CDFIG) in energy conversion system are compared in order to investigate the cost and efficiency of the system. A reference doubly-fed induction generator and a scaling methodology are employed to design the cascade doubly-fed induction generator Using finite element analysis (FEA) and MATLAB/Simulink, both...
This paper presents the development and error analysis of a flexible test rig which is intended for emulating the static and dynamic characteristics of some mechanical loads found in industry. The test rig will provide a laboratory-based platform for assessing the efficiency of inverter-fed induction motors (IM) within a wide range as well that of variable speed drives (VSDs). The use of an Active...
Domain adaptation (DA) algorithms address the problem of distribution shift between training and testing data. Recent approaches transform data into a shared subspace by minimizing the shift between their marginal distributions. We propose a method to learn a common subspace that will leverage the class conditional distributions of training samples along with reducing the marginal distribution shift...
In this paper we describe the mobile health (m-health) system in the context of Internet of Things (IoT). We describe the fundamental characteristics of m-health devices such as compactness, IP connectivity, low-power consumption and security. We discuss acquisition of mobile health data via medical gadgets and wearables and application of this data in monitoring various health conditions such as...
It is estimated that approximately 30% of ischemic strokes are caused by rupture of plaque in the carotid artery. Development of techniques focusing on identifying plaques that are vulnerable to rupture is thus indispensable for stroke prevention. Recent studies have demonstrated that motion analysis of plaques from B-mode and RF ultrasound (US) image sequences can be used to estimate plaque strain...
Heart Failure (HF) occurrence is increasing day by day and is the leading death cause disease in our society. HF is among the most expensive diseases as well. Social and individual burden of this disease can be reduced by early detection of HF. This would provide the means that may helpful to slow progression of the disease as well as to recover patient to good health. In this research study, we have...
We analyze the structure of the level sets of voltage gain and transducer power gain in two-port systems and based on the findings, present a semi-analytical method for finding the minimum values of these quantities as the port terminations vary in bounded rectangles in the complex plane. This provides a numerically efficient way to assess the impact of variability in the port terminations to the...
A wireless sensor and actor network (WSAN) refers to a heterogeneous network primarily composed of sensor and actor nodes. A sensor is the part of the wireless network to sense the event to be occurred in the network. While actor is the entity that performs the networking related functionalities like receiving, transmitting and processing the data. The idea of mobile actor is the new concept in the...
A novel technique of segmenting people for counting using adaptive thresholding has been proposed in this paper. The technique uses adaptive thresholding to detect and extract objects of interest and is based on the idea of counting people through a slit window. The technique works well for highly occluded crowded scenes in Masjid-e-Haram during Hajj and Umrah congregation. It is a very diverse problem...
In this paper the reconfigurable dual band micro strip patch antenna with resonant frequencies 1102MHz and 912MHz is analyzed with the change in position of internal two switches which are connecting the four antenna patches. It is showed that reconfigurable antenna changes the basic parameters with the change in the position of the switches which are being used to connect the antenna structure. A...
In this paper "Triple H-Shaped Multiple Band Frequency Reconfigurable Patch Antenna" is presented. The purpose of this research is to make such antenna which can cover multiple applications by using electronic switches. This presented antenna has 8 different modes and each mode cover at least triple bands which cover applications like GSM, ISM, GPS and many other wireless applications. The...
In this paper, we study the asymptotic stability of linear time-varying systems with (sub-) stochastic system matrices. Motivated by applications in distributed dynamic fusion (DDF), we impose some mild regularity conditions on the elements of time-varying system matrices, and provide sufficient conditions under which the asymptotic stability of the underlying LTV system is guaranteed. We partition...
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