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Open AccessArticle
7 Pages, 1,166 KB Download PDF

Impact of Line Resistance Combined with Device Variability on Resistive RAM Memories

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 1, Page # 11–17, 2018; DOI: 10.25046/aj030102
Abstract:

In this paper, the performance and reliability of oxide-based Resistive RAM (ReRAM) memory is investigated in a 28nm FDSOI technology versus interconnects resistivity combined with device variability. Indeed, common problems with ReRAM are related to high variability in operating conditions and low yield. At a cell level ReRAMs suffer from variability. At an array level,…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Electronic Engineering (EEE))
Open AccessArticle
7 Pages, 329 KB Download PDF

Existence Results for Nonlinear Anisotropic Elliptic Equation

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 160–166, 2017; DOI: 10.25046/aj020523
Abstract:

In this work, we shall be concerned with the existence of weak solutions of anisotropic elliptic operators \(Au +\sum_{i=1}^{N}g_{i}(x, u, \nabla u)+\sum_{i=1}^{N}H_{i}(x, \nabla u)=f-\sum_{i=1}^{N} \frac{\partial }{\partial x_{i}}k_{i}\) where the right hand side \(f\) belongs to \(L^{p^{'}_{\infty}}(\Omega)\) and \(k_{i}\) belongs to \(L^{p_{i}^{'}}(\Omega)\) for \(i=1,...,N\) and \(A\) is a Leray-Lions operator. The critical growth condition on \(g_{i}\) is…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
8 Pages, 329 KB Download PDF

Nonresonance between the first two Eigencurves of Laplacian for a Nonautonomous Neumann Problem

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 152–159, 2017; DOI: 10.25046/aj020522
Abstract:

We consider the following Neumann elliptic problem \( \left\{ \begin{array}{rl} -\Delta u =\alpha\,m_{1}(x)\,u+m_{2}(x)\,g(u)+h(x)\quad & in \: \Omega,\\ \quad\\ \frac{\partial u}{\partial\nu} = 0\qquad\qquad\qquad\qquad\qquad\qquad\quad& on\: \partial\Omega. \end{array} \right. \) By means of Leray-Schauder degree and under some assumptions on the asymptotic behavior of the potential of the nonlinearity g, we prove an existence result for our equation…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
6 Pages, 814 KB Download PDF

Threshold Multi Split-Row algorithm for decoding irregular LDPC codes

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 88–93, 2017; DOI: 10.25046/aj020514
Abstract:

In this work, we propose a new threshold multi split-row algorithm in order to improve the multi split-row algorithm for LDPC irregular codes decoding. We give a complete description of our algorithm as well as its advantages for the LDPC codes. The simulation results over an additive white gaussian channel show that an improvement in…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
10 Pages, 1,032 KB Download PDF

Models accounting for the thermal degradation of combustible materials under controlled temperature ramps

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 78–87, 2017; DOI: 10.25046/aj020513
Abstract:

The purpose of this conference is to present and analyze di_erent models accounting for the thermal degradation of combustible materials (biomass, coals, mixtures…), when submitted to a controlled temperature ramp and under non-oxidative or oxidative atmospheres. Because of the possible rarefaction of fossil fuels, the analysis of di_erent combustible materials which could be used as…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
12 Pages, 2,621 KB Download PDF

Flexible lengthening-shortening arm mechanism for fishery resource management

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 290–301, 2017; DOI: 10.25046/aj020636
Abstract:

The goal of this study was to use underwater robots instead of a diver’s observations to monitor and record the condition of an obstructed seabed in a shallow area. It is difficult to investigate marine resources that exist in deep water shaded by rock due to large and/or small rocks on the seabed. To solve…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Robotics (ROB))
Open AccessArticle
5 Pages, 1,524 KB Download PDF

Applying Machine Learning and High Performance Computing to Water Quality Assessment and Prediction

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 285–289, 2017; DOI: 10.25046/aj020635
Abstract:

Water quality assessment and prediction is a more and more important issue. Traditional ways either take lots of time or they can only do assessments. In this research, by applying machine learning algorithm to a long period time of water attributes’ data; we can generate a decision tree so that it can predict the future…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Environmental Engineering (EEV))
Open AccessArticle
3 Pages, 497 KB Download PDF

Cyclical Wave Bolt for Sound Waves in a Gas Stream

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 272–274, 2017; DOI: 10.25046/aj020633
Abstract:

This article is devoted to the problem of blocking the propagation of sound in a gas stream. This can be useful in the problems of pipeline acoustics and the design of automotive silencers, when it is necessary to ensure the opacity of the boundary (cross section of the pipe) for sound simultaneously with the free…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Mechanical Engineering (EMH))
Open AccessArticle
5 Pages, 814 KB Download PDF

2×1 Microstrip Patch Array Antenna with Harmonic Suppression Capability for Rectenna

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 267–271, 2017; DOI: 10.25046/aj020632
Abstract:

This paper is an extension of work originally presented in 2016 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE). A 2×1 microstrip patch array antenna integrated with photonic bandgap (PBG) and stubs is designed and analyzed. The performance of the PBG and stubs structure are explained and analyzed in terms of the elimination of the resonance…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Telecommunications (TEL))
Open AccessArticle
8 Pages, 1,598 KB Download PDF

Measurement of the Bridge Surface Deflections Using Near-Field Amplitude of Secondary Radiators System

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 217–224, 2017; DOI: 10.25046/aj020626
Abstract:

In remote measurements on large-sized objects main focus is on measuring deformations of bridge surfaces and determination of the dynamic amplification factor in particular. The proposed method estimates deflections of entire lower surface of a bridge due to placement of secondary radiators on this surface. Antenna array directivity pattern (ADP) is distorted during deflection of…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Construction & Building Technology (CBT))
Open AccessReview
9 Pages, 882 KB Download PDF

Review on security issues in RFID systems

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 194–202, 2017; DOI: 10.25046/aj020624
Abstract:

Radio frequency Identification (RFID) is currently considered as one of the most used technologies for an automatic identification of objects or people. Based on a combination of tags and readers, RFID technology has widely been applied in various areas including supply chain, production and traffic control systems. However, despite of its numerous advantages, the technology…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Interdisciplinary Applications of Computer Science (CSI))
Open AccessArticle
8 Pages, 743 KB Download PDF

Fault Tolerant Control Based on PID-type Fuzzy Logic Controller for Switched Discrete-time Systems: An Electronic Throttle Valve Application

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 186–193, 2017; DOI: 10.25046/aj020623
Abstract:

This paper deals with the problem of Fault Tolerant Control (FTC) using PID-type Fuzzy Logic Controller (FLC) for an Electronic Throttle Valve (ETV) described by a switched discrete-time system with input disturbances and actuator faults. In order to detect the faults, Unknown Input Observers (UIOs) are designed and formulated in terms of Lyapunov theory and…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Automation & Control Systems (ACS))
Open AccessArticle
11 Pages, 1,073 KB Download PDF

Data Exchange Strategies for Aggregating Geographical Distribution of Demands for Location-Dependent Information Using Soft-State Sketches in VANETs

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 175–185, 2017; DOI: 10.25046/aj020622
Abstract:

When we drive a car, we often want to know the circumstances of roads between the current location and the destination. Ishihara et al. proposed a Vehicular ad-hoc NETworks (VANET) -based information sharing system, called the Real-Time Visual Car Navigation System, in which a driver can obtain Location-Dependent Information (LDI), such as photographs or videos…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Transportation Science & Technology (TST))
Open AccessArticle
13 Pages, 383 KB Download PDF

Mealy-to-Moore Transformation – A state stable design of automata

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 162–174, 2017; DOI: 10.25046/aj020621
Abstract:

The paper shows a method of transforming an asynchronously feedbacked Mealy machine into a Moore machine. The transformation is done in dual-rail logic under the use of the RS-buffer. The transformed machine stabilizes itself and is safe to use. The transformation is visualized via KV-diagrams and calculated with formulas. We will present three use-cases for…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Electronic Engineering (EEE))
Open AccessArticle
7 Pages, 942 KB Download PDF

Petrov-Galerkin formulation for compressible Euler and Navier-Stokes equations

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 63–69, 2017; DOI: 10.25046/aj020511
Abstract:

The resolution of the Navier-Stokes and Euler equations by the finite element method is the focus of this paper. These equations are solved in conservative form using, as unknown variables, the so-called conservative variables (density, momentum per unit volume and total energy per unit volume). The variational formulation developed is a variant of the Petrov-Galerkin…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
8 Pages, 10,700 KB Download PDF

Steel heat treating: mathematical modelling and numerical simulation of a problem arising in the automotive industry

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 55–62, 2017; DOI: 10.25046/aj020510
Abstract:

We describe a mathematical model for the industrial heating and cooling processes of a steel workpiece representing the steering rack of an automobile. The goal of steel heat treating is to provide a hardened surface on critical parts of the workpiece while keeping the rest soft and ductile in order to reduce fatigue. The high…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
10 Pages, 495 KB Download PDF

Degenerate \(p(x)\)-elliptic equation with second membre in \(L^{1}\)

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 45–54, 2017; DOI: 10.25046/aj020509
Abstract:

In this paper, we prove the existence of a solution of the strongly nonlinear degenerate \(p(x)\)-elliptic equation of type: \(\mathcal{(P)}\left\{\begin{array}{rl} - div\; a(x,u,\nabla u) +g(x,u,\nabla u)& = f \quad in \;\Omega, \\ u = 0 \quad on \quad \partial\Omega, \end{array}\right.\) where \(\Omega\) is a bounded open subset of \( I\!\!R^{N}, N\geq 2, a\) is a…

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(This article belongs to Section Applied Mathematics (MAP))
Open AccessArticle
6 Pages, 889 KB Download PDF

A Relational Database Model and Tools for Environmental Sound Recognition

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 145–150, 2017; DOI: 10.25046/aj020618
Abstract:

Environmental sound recognition (ESR) has become a hot topic in recent years. ESR is mainly based on machine learning (ML) and ML algorithms require first a training database. This database must comprise the sounds to be recognized and other related sounds. An ESR system needs the database during training, testing and in the production stage.…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Artificial Intelligence in Computer Science (CAI))
Open AccessArticle
11 Pages, 2,228 KB Download PDF

Control of a three-stage medium voltage solid-state transformer

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 119–129, 2017; DOI: 10.25046/aj020615
Abstract:

This paper proposes the modeling and control of a Solid-State Transformer using a three-stage conversion topology. First, a rectification stage is used, where a three-phase high-voltage AC signal is converted to a DC level; this stage is then followed by a DC-DC converter, and finally an inverter is used to convert the DC into a…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Electrical Engineering (ELE))
Open AccessReview
5 Pages, 787 KB Download PDF

A Review of Anti- Podal Vivaldi Antenna Operating in Cellular Mobile Communications

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 4, Page # 204–208, 2017; DOI: 10.25046/aj020427
Abstract:

The antenna proposed is a new geomantic structure of Ultra-Wideband (UWB) Anti- Podal Vivaldi antenna (AVA). It remarkably offers an attractive performance over the bands of cellular networks. However, its benefits are not limited only in particular applications, whereas radar imaging, mining detection, the biomedical science in the heating of brain cancer tumor and treatment,…

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(This article belongs to Section Electrical Engineering (ELE))
Open AccessArticle
6 Pages, 745 KB Download PDF

Modelling and Analysis of Radial Flux Surface Mounted Direct-Driven PMSG in Small Scale Wind Turbine

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 94–99, 2017; DOI: 10.25046/aj020612
Abstract:

This paper presents the modelling and analysis of permanent magnet synchronous generator (PMSG) which are used in direct driven small scale wind turbines. The 3 kW PM generator which is driven directly without gear system is analyzed by Ansoft Maxwell 2D RMxprt. The performance analysis of generator includes the cogging torque in two teeth, induced…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Electrical Engineering (ELE))
Open AccessArticle
7 Pages, 870 KB Download PDF

Discovering Interesting Biological Patterns in the Context of Human Protein-Protein Interaction Network and Gene Disease Profile Data

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 87–93, 2017; DOI: 10.25046/aj020611
Abstract:

The current advances in proteomic and transcriptomic technologies produced huge amounts of high-throughput data that spans multiple biological processes and characteristics in different organisms. One of the important directions in today’s bioinformatics research is to discover patterns of genes that have interesting properties. These groups of genes can be referred to as functional modules. Detecting…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Biochemistry & Molecular Biology (BMB))
Open AccessArticle
11 Pages, 1,013 KB Download PDF

Real-Time Flux-weakening Control for an IPMSM Drive System Using a Predictive Controller

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 76–86, 2017; DOI: 10.25046/aj020610
Abstract:

This paper proposes extended-range high-speed control for an IPMSM drive system. A simple real-time tuning flux-weakening control algorithm is proposed and implemented to control an IPMSM drive system in a wide variable speed range, from 3 r/min up to 2700 r/min. This flux-weakening control algorithm does not require any motor parameters and only needs simple…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Automation & Control Systems (ACS))
Open AccessArticle
8 Pages, 1,409 KB Download PDF

Smartphone Based Heart Attack Risk Prediction System with Statistical Analysis and Data Mining Approaches

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 3, Page # 1815–1822, 2017; DOI: 10.25046/aj0203221
Abstract:

Nowadays, Ischemic Heart Disease (IHD) (Heart Attack) is ubiquitous and one of the major reasons of death worldwide. Early screening of people at risk of having IHD may lead to minimize morbidity and mortality. A simple approach is proposed in this paper to predict risk of developing heart attack using smartphone and data mining. Clinical…

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(This article belongs to the SP3 (Special issue on Recent Advances in Engineering Systems 2017) & Section Artificial Intelligence in Computer Science (CAI))
Open AccessArticle
7 Pages, 2,510 KB Download PDF

Flexible Aperture Tuning Solution for Cellular Main Antenna in Metallic Back Cover Mobile Phone

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 49–55, 2017; DOI: 10.25046/aj020606
Abstract:

Metal housing has been used extensively on portable communication devices such as on mobile phones and tablets.  The choice of metal housing ranges from metallic rim to metallic back cover.  This metal housing tends to improve the outlook appearance of the mobile devices, and add mechanical strength towards the mobile devices.  However, from the aspect…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Electronic Engineering (EEE))
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