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The ever increasing traffic demand becomes a serious concern of mobile network operators. To solve this traffic explosion problem, there have been many efforts to offload the traffic from cellular links to direct communications among users. In this paper, we propose the framework of Traffic Offloading assisted by Social network services (SNS) via opportunistic Sharing in mobile social networks, TOSS,...
This paper presents an application of swarm intelligence technique for power system optimization. Unit commitment is an important task for the optimal allocation of the generating units for the economic operations of the power system network. Solution to the unit commitment (UC) problem in the conventional market and profit based unit commitment (PBUC) in restructured power market have been solved...
This paper aims at the analysis and design of a new DC-DC multi output boost (MOB) converter using which the output can be shared between different loads. Several single output power supplies can be replaced by this configuration. The duty ratio of the three pulses is varied accordingly to the key pressed in the keypad. The pulses are wirelessly transmitted and its range is found to be depended on...
Blindness is the most serious ailment that people suffer. The main motive to build Bionic eye is to copy human eye neural circuit, it aims at restoring the lookout vision to people living with blindness and low vision‥
Crowd sensing is an approach to collect many samples of a phenomena of interest by distributing the sampling across a large number of individuals. While any one individual may not provide sufficient samples, aggregating samples across many individuals may provide high-quality and high-coverage measurements of a phenomena. In this work, we propose an incentive assignment mechanism for crowd sensing...
The simulation tool is very important to develop process and design a new device structures. Device characteristics and physics phenomena also can be analyzed and predicted using this tool. But, it also have the limitation such us the physical model to describe the nature behaviours accurately. Selecting the models should be defined correctly. One of the critical processes is ion implantation because...
Different spatial charge trapping distribution effect on off-state degradation in power LDMOS was studied. Electron trapping phenomena is thermally grown in silicon dioxide (SiO2). Due to charge can be trapped in the oxide, it can make structural defects, oxidation-induced defects, impurities, or other defects caused by Si-O-bond breaking process. This process can increase leakage current and cause...
Threshold voltage shift is a major problem for UMOS device. This study explains how device performance can be affected by silicon defects (interstitial and Vacancy). Interstitial may be induced by epitaxy process or trench process. Interstitial enhances the dopant diffusion. In TCAD simulation interstitial distribution is different for different diffusion model and shows shift in the threshold voltage...
In order to automatically control the environment, smart systems should have sufficient rules, which describe expected system's behavior. While such rules may be added man-ually, usually this requires considerable efforts, often surpassing those that users are willing to spend to setup the system. In this paper, we propose a novel technique to mine such rules automat-ically, given a sensor log from...
On October 16, 2012 five active radiation detectors employing the Timepix version of the technology developed by the CERN-based Medipix2 Collaboration were deployed on-board the International Space Station (ISS) using simple USB interfaces to the existing ISS laptops for power, control and readout. These devices successfully demonstrated the capabilities of this technology by providing reliable dose...
This paper presents the design and result of a miniaturized wideband triple frequency microstrip patch antenna for mobile and satellite communication applications. The proposed antenna consists of an array of rectangular slits that enables to operate at Industrial Scientific and Medical band (ISM), Wireless LAN (WLAN) and satellite communication bands. By etching slits in the nonradiating edges of...
This study aims, first, to propose a model and to test an acceptance model to identify the students' intention to use e-learning system and to identify the use of e-learning used as a supplementary tool in a conventional learning context. A TAM model proposed includes System Functionality (SF), System Interactivity (SI), Usability (U), Self-Efficacy (SE), Internet and Computer Experience (ICE), Socio-Environment...
We present a polarization rotator and coupler that rotates the TE0 mode in a silicon waveguide and couples to the hybrid plasmonic (HP0) mode. Coupling factor of ∼ 60% and polarization conversion efficiency of ∼ 90% is achieved.
We report the wavelength dependency of third-order nonlinearity and multi-photon absorption of silicon in the spectral range from 1.6 µm to 6 µm, including the nonlinear figure of merit [1].
A vertical power MOSFET with the extended trench oxide is proposed. The key feature of this device structure is that the trench oxide, which is set in the side of the device, is extended to n+ substrate. This technique decreases the corner effect of oxide and improves the tradeoff between breakdown voltage (BV) and the specific on-resistance (Ron, sp). Silvaco T-CAD tool is used for the simulation...
Mass deployment of fibre access networks is without doubt the next short to medium term goal of many network operators around the globe. Long-Reach Passive Optical Network (LR-PON) has been proposed as a solution to help spreading mass deployment of Fibre-to-the-premises (FTTP), by sensibly reducing the cost per customer compared to current commercially available technologies. This paper addresses...
Highly available systems undergo upgrades like any other systems but with a more stringent requirement of no or very limited service outage. Unforeseen violations of software dependencies are the main causes of service outage during upgrade. We investigate the problem in the case of component based systems, more specifically systems managed by an SAForum compliant middleware. We discuss dependencies...
This paper develops a novel approach to selecting the best supplier for meeting a specific customer order with regard to the benefits, opportunities, costs and risks (BOCR) dimensions. The impact of the customer order attributes on the BOCR dimensions is investigated. A new customer order-driven weighting method is developed to objectively and consistently determine the relative importance of the...
Photoluminescence (PL) from Ge1−xSnx grown on Si by CVD was investigated for Sn composition of 0.9, 3.2, 6, and 7%, respectively. The direct and indirect band transitions were analyzed at different temperatures.
We report time-domain measurements of nonlinear dynamics of picosecond pulses in silicon. The dispersion-engineered photonic crystal enables our systematic investigation of dynamic interplay between dispersion, free-carriers, and χ(3) effects for a broad parameter range.
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