Results for "Reza Rastegar"

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Avalanches in an excitable networkApr 02 2019We study propagation of avalanches in a certain excitable network. The model is a particular case of the one introduced in [23], and is mathematically equivalent to an endemic variation of the Reed-Frost epidemic model introduced in [27]. Two types of ... More
On ballistic deposition process on a stripMar 29 2019We revisit the model of the ballistic deposition studied in \cite{bdeposition} and prove several combinatorial properties of the random tree structure formed by the underlying stochastic process. Our results include limit theorems for the number of roots ... More
Finite automata, probabilistic method, and occurrence enumeration of a pattern in words and permutationsMay 14 2019The main theme of this paper is the enumeration of the occurrence of a pattern in words and permutations. We mainly focus on asymptotic properties of the sequence $f_r^v(k,n),$ the number of $n$-array $k$-ary words that contain a given pattern $v$ exactly ... More
Maximum occupation time of a transient excited random walk on ZNov 04 2011We consider a transient excited random walk on $Z$ and study the asymptotic behavior of the occupation time of a currently most visited site. In particular, our results imply that, in contrast to the random walks in random environment, a transient excited ... More
Deformation of Outer Representations of Galois Group IISep 30 2006This paper is devoted to deformation theory of "anabelian" representations of the absolute Galois group landing in outer automorphism group of the algebraic fundamental group of a hyperbolic smooth curve defined over a number-field. In the first part ... More
Deformation of Outer Representations of Galois GroupMay 18 2004Sep 30 2006To a hyperbolic smooth curve defined over a number-field one naturally associates an "anabelian" representation of the absolute Galois group of the base field landing in outer automorphism group of the algebraic fundamental group. In this paper, we introduce ... More
A High Dynamic Range 3-Moduli-Set with Efficient Reverse ConverterJan 08 2009-Residue Number System (RNS) is a valuable tool for fast and parallel arithmetic. It has a wide application in digital signal processing, fault tolerant systems, etc. In this work, we introduce the 3-moduli set {2^n, 2^{2n}-1, 2^{2n}+1} and propose its ... More
Implications of the TTV-Detection of Close-In Terrestrial Planets Around M Stars for Their Origin and Dynamical EvolutionDec 10 2010It has been shown that an Earth-size planet or a super-Earth, in resonance with a transiting Jupiter-like body in a short-period orbit around an M star, can create detectable TTV signals (Kirste \& Haghighipour, 2011). Given the low masses of M stars ... More
Random walk on the Poincaré disk induced by a group of Möbius transformationsApr 17 2018We consider a discrete-time random motion, Markov chain on the Poincar\'{e} disk. In the basic variant of the model a particle moves along certain circular arcs within the disk, its location is determined by a composition of random M\"{o}bius transformations. ... More
Non-equilibrium time dynamics of genetic evolutionAug 18 2018Biological systems are typically highly open, non-equilibrium systems that are very challenging to understand from a statistical mechanics perspective. While statistical treatments of evolutionary biological systems have a long and rich history, examination ... More
Hydrodynamic Analysis and Responsivity improvement of a metal/semiconductor/metal plasmonic detectorJan 30 2019Characteristics improvement of photon/plasmon detectors have been the subject of several investigations in the area of plasmonic integrated circuits. Among different suggestions, Silicon-based Metal-Semiconductor-Metal (MSM) waveguides are one of the ... More
Design and simulation of a low dark current metal/silicon/metal integrated plasmonic detectorNov 13 2018Silicon-based waveguide plasmon detectors have a great research interest because of CMOS compatibility and integration capability with other plasmonic integrated circuits. In this paper, a balanced metal-semiconductor-metal (MSM) integrated plasmonic ... More
Approximation on abelian varieties by its subgroupsApr 09 2015In this paper, we introduce an algebro-geometric formulation for Faltings' theorem on diophantine approximation on abelian varieties using an improvement of Faltings-Wustholz observation over number fields. In fact, we prove that, for any geometrically ... More
Arithmetic Deformation Theory of Lie AlgebrasNov 21 2012This paper is devoted to deformation theory of graded Lie algebras over $\Z$ or $\Z_l$ with finite dimensional graded pieces. Such deformation problems naturally appear in number theory. In the first part of the paper, we use Schlessinger criteria for ... More
On Atkin-Lehner correspondences on Siegel spacesJun 11 2004Dec 31 2014We introduce a higher dimensional Atkin-Lehner theory for Siegel-Parahoric congruence subgroups of $GSp(2g)$. Old Siegel forms are induced by geometric correspondences on Siegel moduli spaces which commute with almost all local Hecke algebras. We also ... More
Human Gait Database for Normal Walk Collected by Smart Phone AccelerometerMay 04 2019The goal of this study is to introduce a comprehensive gait database of 93 human subjects who walked between two end points during two different sessions and record their gait data using two smart phones, one was attached to right thigh and another one ... More
EPH-classifications in Geometry, Algebra, Analysis and ArithmeticMar 26 2015Trichotomy of Elliptic-Parabolic-Hyperbolic appears in many different areas of mathematics. All of these are named after the very first example of trichotomy, which is formed by ellipses, parabolas, and hyperbolas as conic sections. We try to understand ... More
On Profinite Hyperbolicity and Diophantine GeometryNov 21 2012Jun 04 2015In this note, we explore the notion of hyperbolicity of topologically finitely generated profinite groups. Some applications to diophantine geometry are suggested and we try to reformulate certain problems in diophantine geometry in terms of hyperbolic ... More
Self-Similar Fractals and Arithmetic DynamicsApr 27 2004Apr 20 2015The concept of self-similarity on subsets of algebraic varieties is defined by considering algebraic endomorphisms of the variety as `similarity' maps. Self-similar fractals are subsets of algebraic varieties which can be written as a finite and disjoint ... More
A geometric formulation of Siegel's diophantine theoremMar 31 2015In this paper, we introduce an algebro-geometric formulation for Siegel's theorem using an improvement of Lang's version of Roth's theorem over finitely generated fields of characteristic zero. In fact, we prove that, for an affine open curve in an irreducible ... More
Arithmetic Teichmuller TheoryJun 04 2015By Grothendieck's anabelian conjectures, Galois representations landing in outer automorphism group of the algebraic fundamental group which are associated to hyperbolic smooth curves defined over number-fields encode all the arithmetic information of ... More
Self-Similarity in Geometry, Algebra and ArithmeticNov 21 2012Jun 04 2015We define the concept of self-similarity of an object by considering endomorphisms of the object as `similarity' maps. A variety of interesting examples of self-similar objects in geometry, algebra and arithmetic are introduced. Self-similar objects provide ... More
On Congruences Between Drinfeld Modular FormsMay 27 2004Let ${\mathbf F}_q$ denote a finite field of characteristic $p$ and let $n$ be an effective divisor on the affine line over ${\mathbf F}_q$ and let $v$ be a point on the affine line outside $n$. In this paper, we get congruences between ${\mathbb Q}_l$-valued ... More
On a Theorem of IharaJun 11 2004Let $p$ be a prime number and let $n$ be a positive integer prime to $p$. By an Ihara result we mean existence of an injection with torsion-free cokernel from a full lattice in the space of $p$-old modular forms, into a full lattice in the space of all ... More
Balanced metrics and chow stability of projective bundles over Riemann surfacesSep 30 2010Dec 01 2010In 1980, I. Morrison proved that slope stability of a vector bundle of rank 2 over a compact Riemann surface implies Chow stability of the projectivization of the bundle with respect to certain polarizations. We generalized Morrison's result to higher ... More
Stochastic excitation of stellar oscillationsAug 22 2001Excitation of solar oscillations is attribued to turbulent motions in the solar convective zone. It is also currently believed that oscillations of low massive stars (M <2 Mo) - which possess an upper convective zone - are stochastically excited by turbulent ... More
The Effect of Noise on the Dirac Phase of Electron in The Presence of Screw DislocationOct 26 2011The effect of noise on the Dirac phase of electron in the presence of screw dislocation is studied. An uncorrelated noise, which coincides with the nature of thermal fluctuations, is adopted. Results indicate that the Dirac phase is robust against existing ... More
Closure of Random samplesAug 27 2010In this paper we show that the closure of a random sample for a k-dimensional random vector is almost surely a deterministic set of all heavy points of the distribution. A heavy point is defined to be a point for which all its neighborhoods have positive ... More
Divergence of sample quantilesMay 16 2010We show that the left (right) sample quantile tends to the left (right) distribution quantile at p in [0,1], if the left and right quantiles are identical at p. We show that the sample quantiles diverge almost surely otherwise. The latter can be considered ... More
Predictability Horizon of Oceanic Rogue WavesJul 01 2014Prediction is a central goal and a yet-unresolved challenge in the investigation of oceanic rogue waves. Here we define a horizon of predictability for oceanic rogue waves and derive, via extensive computational experiments, the first statistically-converged ... More
Structure of sunspot light bridges in the chromosphere and transition regionNov 28 2017Light bridges (LBs) are elongated structures with enhanced intensity embedded in sunspot umbra and pores. We studied the properties of a sample of 60 LBs observed with the Interface Region Imaging Spectrograph (IRIS). Using IRIS near- and far-ultraviolet ... More
Cold nuclear matter effects and a modified form of the proximity approachJul 24 2016The influence of the cold nuclear matter effects on the Coulomb barriers and also on the fusion cross sections of 47 fusion reactions are systematically investigated within the framework of the proximity formalism. For this purpose, I modify the original ... More
Parallel Optimization of Polynomials for Large-scale Problems in Stability and ControlFeb 20 2017In this thesis, we focus on some of the NP-hard problems in control theory. Thanks to the converse Lyapunov theory, these problems can often be modeled as optimization over polynomials. To avoid the problem of intractability, we establish a trade off ... More
MOSiC: an analysis tool for IRIS spectral dataJan 16 2017This is a manual for the MOSiC package. MOSiC is a collection of IDL programs for profile analysis and Gaussian fitting of the Mg II h/k lines along with Gaussian fitting of the C II 133.5 nm line pair, the O I 135.6, the Cl I 135.2, the Si IV 139.7 and ... More
On the Intuitionistic fuzzy topological (metric and normed) spacesJan 11 2005In this paper, we define precompact set in intuitionistic fuzzy metric spaces and prove that any subset of an intuitionistic fuzzy metric space is compact if and only if it is precompact and complete. Also we define topologically complete intuitionistic ... More
Generalized Uncertainty Principle Removes The Chandrasekhar LimitDec 20 2015Mar 12 2016The effect of a generalized uncertainty principle on the structure of an ideal white dwarf star is investigated. The equation describing the equilibrium configuration of the star is a generalized form of the Lane-Emden equation. It is proved that the ... More
Proof of Goldbach's ConjectureJun 05 2002Feb 22 2005After certain subsets of Natural numbers called Range and Row are defined, we assume (1) there is a function that can produce prime numbers and (2) each even number greater than 2, like A, can be represented as the sum of n prime numbers. We show this ... More
Approximation Properties of Variational Bayes for Vector AutoregressionsMar 02 2019Variational Bayes (VB) is a recent approximate method for Bayesian inference. It has the merit of being a fast and scalable alternative to Markov Chain Monte Carlo (MCMC) but its approximation error is often unknown. In this paper, we derive the approximation ... More
Gorenstein injectivity of the section functorAug 26 2010Let $R$ be a commutative Noetherian ring of Krull dimension $d$ admitting a dualizing complex $D$ and let $\frak a$ be any ideal of $R$, we prove that $\Gamma_{\frak a}(G)$ is Gorenstein injective for any Gorenstein injective $R$-module $G$. Let $(R,\frak ... More
Utilizing wind in spatial covarianceAug 14 2014This work develops a covariance function which allows for a stronger spatial correlation for pairs of points in the direction of a vector such as wind and weaker for pairs which are perpendicular to it. It derives a simple covariance function by stretching ... More
Conditional information and definition of neighbor in categorical random fieldsDec 31 2010We show that the definition of neighbor in Markov random fields as defined by Besag (1974) when the joint distribution of the sites is not positive is not well-defined. In a random field with finite number of sites we study the conditions under which ... More
Quantiles symmetryApr 04 2010This paper finds a symmetry relation (between quantiles of a random variable and its negative) that is intuitively appealing. We show this symmetry is quite useful in finding new relations for quantiles, in particular an equivariance property for quantiles ... More
A Quantum Mechanical Approach To The Polarization Transport of PhotonsAug 11 2010Based on quantum mechanical approach the polarization transport of photons which propagate in a medium with slow varying refractive index is studied. The photon polarizations are separated in opposite directions normal to the ray which is called "Spin ... More
Propose a Fuzzy Queuing Maximal Benefit Location ProblemApr 20 2010This paper presents a fuzzy queuing location model for congested system. In a queuing system there are different criteria that are not constant such as service rate, service rate demand, queue length, the occupancy probability of a service center and ... More
Universality of Anderson transition in two-dimensional systems of symplectic symmetry classDec 16 2009Jan 10 2010We investigate localization of noninteracting particles with spins higher than 1/2 in a two-dimensional random potential in presence of spin-orbit coupling. We consider an integer spin ($s=1$) and a half-integer spin ($s=3/2$) belonging to orthogonal ... More
Relative Chow stability and extremal metricsOct 24 2016Jun 19 2017We prove that the existence of extremal metrics implies asymptotically relative Chow stability. An application of this is the uniqueness, up to automorphisms, of extremal metrics in any polarization.
Fast Reconstruction Algorithm for Perturbed Compressive Sensing Based on Total Least-Squares and Proximal SplittingJun 14 2016We consider the problem of finding a sparse solution for an underdetermined linear system of equations when the known parameters on both sides of the system are subject to perturbation. This problem is particularly relevant to reconstruction in fully-perturbed ... More
Gorenstein injective dimension and a generalization of Ischebeck FormulaMay 12 2011Let $(R,\frak m)$ be a commutative Noetherian local ring and let $M$ and $N$ be finitely generated $R$-modules of finite injective dimension and finite Gorenstein injective dimension, respectively. In this paper we prove a generalization of Ischebeck ... More
Novel and Tuneable Method for Skin Detection Based on Hybrid Color Space and Color Statistical FeaturesJul 24 2014Skin detection is one of the most important and primary stages in some of image processing applications such as face detection and human tracking. So far, many approaches are proposed to done this case. Near all of these methods have tried to find best ... More
New Method for Optimization of License Plate Recognition system with Use of Edge Detection and Connected ComponentJul 24 2014License Plate recognition plays an important role on the traffic monitoring and parking management systems. In this paper, a fast and real time method has been proposed which has an appropriate application to find tilt and poor quality plates. In the ... More
On the generalization of Faltings' Annihilator TheoremAug 27 2013Let $R$ be a commutative Noetherian ring and let $n$ be a non-negative integer. In this article, by using the theory of Gorenstein dimensions, it is shown that whenever $R$ is a homomorphic image of a Noetherian Gorenstein ring, then the invariants $\inf\{i\in\nat_0|\, ... More
Universal Scaling Function of Velocity Rotation in Spiral galaxiesJan 14 2012The data of velocity rotation curve in spiral galaxies, almost for galaxies which have close central surface brightness, collapse onto a universal scaling function. Since scaling functions are the signature of emergence in complex systems we are led to ... More
A hierarchical framework for object recognitionOct 28 2014Object recognition in the presence of background clutter and distractors is a central problem both in neuroscience and in machine learning. However, the performance level of the models that are inspired by cortical mechanisms, including deep networks ... More
Approximating quantiles in very large datasetsJul 07 2010Very large datasets are often encountered in climatology, either from a multiplicity of observations over time and space or outputs from deterministic models (sometimes in petabytes= 1 million gigabytes). Loading a large data vector and sorting it, is ... More
Anomalies in conductance and localization length of disordered laddersNov 07 2013Jun 13 2014We discuss the conditions under which an anomaly occurs in conductance and localization length of Anderson model on a lattice. Using the ladder hamiltonian and analytical calculation of average conductance we find the set of resonance conditions which ... More
Irrational anomalies in one-dimensional Anderson localizationNov 07 2013We revisit the problem of one-dimensional Anderson localization, by providing perturbative expression for Lyapunov exponent of Anderson model with next-nearest-neighbor (nnn) hopping. By comparison with exact numerical results, we discuss the range of ... More
$γ$-rays from singlet fermionic cold dark matter: confronting with the latest H.S.S.E. dataMay 27 2018We explore the parameter space of the singlet fermionic cold dark matter model with respect to constraints on, first, the relic density and second, gamma-ray lines up to 10 TeV. We compare our result with the latest experimental data from H.E.S.S., and ... More
Structural Isomprphism in Mathematical Expressions: A Simple Coding SchemeMay 29 2018While there exist many methods in machine learning for comparison of letter string data, most are better equipped to handle strings that represent natural language, and their performance will not hold up when presented with strings that correspond to ... More
Hubble Diagrams in the Jordan and Einstein FramesSep 05 2017Sep 11 2017Different models in cosmology generally predict different Hubble diagrams. Then, the comparison between the Hubble diagrams may be used as a way for distinguishing between different cosmological scenarios. But that is not always the case because there ... More
Removing the Big Bang Singularity: The role of the generalized uncertainty principle in quantum gravitySep 11 2012The possibility of avoiding the big bang singularity by means of a generalized uncertainty principle is investigated. In relation with this matter, the statistical mechanics of a free-particle system obeying the generalized uncertainty principle is studied ... More
Unique Structure on G-equivariant ManifoldsSep 28 2010We will have a deep look at the set of all $G$-equivariant maps from the factor Lie group $G$ to the under the action manifold $M$, both from "computational" and "observability" viewpoint. We will also be looking for the existence of "unique" structure ... More
Balanced Metrics and Chow Stability of Projective Bundles over Kähler Manifolds IIOct 25 2011In the previous article (\cite{S}), we proved that slope stability of a holomorphic vector bundle $E$ over a polarized manifold $(X,L)$ implies Chow stability of $(\mathbb{P}E^*,\mathcal{O}_{\mathbb{P}E^*}(1)\otimes \pi^* L^k)$ for $k \gg 0$ if the base ... More
Balanced Metrics and Chow Stability of Projective Bundles over Kähler ManifoldsMay 06 2009In 1980, I. Morrison proved that slope stability of a vector bundle of rank 2 over a compact Riemann surface implies Chow stability of the projectivization of the bundle with respect to certain polarizations. Using the notion of balanced metrics and recent ... More
Numerical Algorithms for Finding Balanced Metrics on Vector BundlesApr 24 2008Dec 06 2008In \cite{D3}, Donaldson defines a dynamical system on the space of Fubini-Study metrics on a polarized compact K\"ahler manifold. Sano proved that if there exists a balanced metric for the polarization, then this dynamical system always converges to the ... More
Privacy Games: Optimal User-Centric Data ObfuscationFeb 14 2014May 27 2015In this paper, we design user-centric obfuscation mechanisms that impose the minimum utility loss for guaranteeing user's privacy. We optimize utility subject to a joint guarantee of differential privacy (indistinguishability) and distortion privacy (inference ... More
Quantiles EquivarianceApr 04 2010It is widely claimed that the quantile function is equivariant under increasing transformations. We show by a counterexample that this is not true (even for strictly increasing transformations). However, we show that the quantile function is equivariant ... More
Relative Chow stability and extremal metricsOct 24 2016We prove that the existence of extremal metrics implies asymptotically relative Chow stability. An application of this is the uniqueness, up to automorphisms, of extremal metrics in any polarization.
A new model for Cerebellar computationFeb 22 2018The standard state space model is widely believed to account for the cerebellar computation in motor adaptation tasks [1]. Here we show that several recent experiments [2-4] where the visual feedback is irrelevant to the motor response challenge the standard ... More
Fusing Multiple Multiband ImagesDec 13 2017Jul 18 2018We consider the problem of fusing an arbitrary number of multiband, i.e., panchromatic, multispectral, or hyperspectral, images belonging to the same scene. We use the well-known forward observation and linear mixture models with Gaussian perturbations ... More
Faltings' local-global principle for the minimaxness of local cohomology modulesAug 26 2013The concept of Faltings' local-global principle for the minimaxness of local cohomology modules over a commutative Noetherian ring $R$ is introduced, and it is shown that this principle holds at level 2. We also establish the same principle at all levels ... More
On the Smoothness of FunctorsJul 29 2010In this paper we try to introduce a good smoothness notion for a functor. We consider properties and conditions from geometry and algebraic geometry which we expect a smooth functor should to have.
A Robust and Efficient Method for Improving Accuracy of License Plate Characters RecognitionJul 24 2014Sep 16 2014License Plate Recognition (LPR) plays an important role on the traffic monitoring and parking management. A robust and efficient method for enhancing accuracy of license plate characters recognition based on K Nearest Neighbours (K-NN) classifier is presented ... More
Recognition of Handwritten Persian/Arabic Numerals Based on Robust Feature Set and K-NN ClassifierJul 24 2014Aug 14 2014This paper has been withdrawn by the author due to a crucial sign error in equation 2 and some mistake in Table 1 information. please let me for changing this information and updating this paper.
Real-Time and Efficient Method for Accuracy Enhancement of Edge Based License Plate Recognition SystemJul 24 2014License Plate Recognition plays an important role on the traffic monitoring and parking management. Administration and restriction of those transportation tools for their better service becomes very essential. In this paper, a fast and real time method ... More
ECOC-Based Training of Neural Networks for Face RecognitionDec 14 2013Error Correcting Output Codes, ECOC, is an output representation method capable of discovering some of the errors produced in classification tasks. This paper describes the application of ECOC to the training of feed forward neural networks, FFNN, for ... More
Spin density-functional theory for imbalanced interacting Fermi gases in highly elongated harmonic trapsJan 20 2008Mar 20 2008We numerically study imbalanced two component Fermi gases with attractive interactions in highly elongated harmonic traps. An accurate parametrization formula for the ground state energy is presented for a spin-polarized attractive Gaudin-Yang model. ... More
An ensemble learning method for scene classification based on Hidden Markov Model image representationJul 22 2016Aug 11 2016Low level images representation in feature space performs poorly for classification with high accuracy since this level of representation is not able to project images into the discriminative feature space. In this work, we propose an efficient image ... More
Crisis-induced intermittency in truncated mean field dynamosAug 12 1997We investigate the detailed dynamics of a truncated $\alpha\omega$ dynamo model with a dynamic $\alpha$ effect. We find the presence of multiple attractors, including two chaotic attractors with a fractal basin boundary which merge to form a single attractor ... More
A model-independent dark energy reconstruction scheme using the geometrical form of the luminosity-distance relationJun 18 2006Sep 25 2006We put forward a new model-independent reconstruction scheme for dark energy which utilises the expected geometrical features of the luminosity-distance relation. The important advantage of this scheme is that it does not assume explicit ansatzes for ... More
Absence of supersensitivity to small input signals in generalized on--off systemsMay 31 2000It has recently been shown that nonlinear skew product dynamical systems with invariant subspaces which are capable of displaying on-off intermittency can show supersensitivity to small input signals. Here we show that this supersensitivity is absent ... More
Multiple forms of intermittency in PDE dynamo modelsJun 23 1999We find concrete evidence for the presence of crisis-induced and Pomeau-Manneville Type-I intermittencies in an axisymmetric PDE mean-field dynamo model. These findings are of potential importance for two different reasons. Firstly, as far as we are aware, ... More
Motive of Theta divisor IOct 30 2014Jul 23 2015It is a well known fact that the Theta divisor on the Jacobian of a non-singular curve is a determinantal variety, i.e. is defined by the zero set of a determinant. A less known is for the generalized Jacobian of a singular curve. We describe that the ... More
A Model of f(R) Gravity as an Alternative for Dark Matter in Spiral GalaxiesOct 09 2010In this paper we study consistent solutions of spherically symmetric space in metric f(R) gravity theory. Here we inversely obtain a generic action from metric solutions that describe flat rotation curves in spiral galaxies without dark matter. Then we ... More
Electronic structure and layer-resolved transmission of bilayer graphene nanoribbon in the presence of vertical fieldsJun 20 2013Jul 04 2013Electronic properties of bilayer graphene are distinct from both the conventional two dimensional electron gas and monolayer graphene due to its particular chiral properties and excitation charge carrier dispersions. We study the effect of strain on the ... More
Drying model for porous material based on the dynamics of the evaporation frontSep 15 2004A receding-front model for drying of porous material is proposed that explains their drying-rate curves based on the dynamics of the evaporation front. The falling-rate regime is attributed to the slowing down of the front's propagation inside the medium ... More
Embedded Eigenvalues and the Nonlinear Schrodinger EquationJan 13 2011Jan 31 2011A common challenge to proving asymptotic stability of solitary waves is understanding the spectrum of the operator associated with the linearized flow. The existence of eigenvalues can inhibit the dispersive estimates key to proving stability. Following ... More
Quantum size effects on spin-tunneling time in a magnetic resonant tunneling diodeMay 10 2009Oct 24 2009We study theoretically the quantum size effects of a magnetic resonant tunneling diode (RTD) with a (Zn,Mn)Se dilute magnetic semiconductor layer on the spin-tunneling time and the spin polarization of the electrons. The results show that the spin-tunneling ... More
Ground-state properties of gapped graphene using the random phase approximationJul 20 2008Jan 17 2009We study the effect of band gap on the ground-state properties of Dirac electrons in a doped graphene within the random phase approximation at zero temperature. Band gap dependence of the exchange, correlation and ground-state energies and the compressibility ... More
PCA-Based Relevance Feedback in Document Image RetrievalSep 11 2012Research has been devoted in the past few years to relevance feedback as an effective solution to improve performance of information retrieval systems. Relevance feedback refers to an interactive process that helps to improve the retrieval performance. ... More
Performance Analysis of Linear-Equality-Constrained Least-Squares EstimationAug 26 2014Feb 22 2015We analyze the performance of a linear-equality-constrained least-squares (CLS) algorithm and its relaxed version, called rCLS, that is obtained via the method of weighting. The rCLS algorithm solves an unconstrained least-squares problem that is augmented ... More
Geodesics, the Equivalence Principle and Singularities in Higher-dimensional General Relativity and BraneworldsSep 14 2005Oct 26 2005The geodesics of a spacetime seldom coincide with those of an embedded submanifold of codimension one. We investigate this issue for higher-dimensional general relativity-like models, firstly in the simpler case without branes to isolate which features ... More
Reconfigurable Parallel Data Flow ArchitectureMar 09 2010This paper presents a reconfigurable parallel data flow architecture. This architecture uses the concepts of multi-agent paradigm in reconfigurable hardware systems. The utilization of this new paradigm has the potential to greatly increase the flexibility, ... More
Scaling laws for non-Euclidean plates and the $W^{2,2}$ isometric immersions of Riemannian metricsJul 10 2009This paper concerns the elastic structures which exhibit non-zero strain at free equilibria. Many growing tissues (leaves, flowers or marine invertebrates) attain complicated configurations during their free growth. Our study departs from the 3d incompatible ... More
$\pmb{D}$-boundedness and $\pmb{D}$-compactness in finite dimensional probabilistic normed spacesDec 14 2005In this paper, we prove that in a finite dimensional probabilistic normed space, every two probabilistic norms are equivalent and we study the notion of $D$-compactness and $D$-boundedness in probabilistic normed spaces.
Functors induced by Cauchy extension of C*-algebrasJan 05 2017In this paper we give three functors $\mathfrak{P}$, $[\cdot]_K$ and $\mathfrak{F}$ on the category of C$^\ast$-algebras. The functor $\mathfrak{P}$ assigns to each C$^\ast$-algebra $\mathcal{A}$ a pre-C$^\ast$-algebra $\mathfrak{P}(\mathcal{A})$ with ... More
Quantization of Donaldson's heat flow over projective manifoldsNov 11 2014Consider $E$ a holomorphic vector bundle over a projective manifold $X$ polarized by an ample line bundle $L$. Fix $k$ large enough, the holomorphic sections $H^0(E\otimes L^k)$ provide embeddings of $X$ in a Grassmanian space. We define the \textit{balancing ... More
Search for anomalous tq$γ$ FCNC Couplings in direct single top quark production at the LHCDec 06 2016In this paper we propose and study direct single top quark production channel for probing the tq$\gamma$ flavor-changing neutral current (FCNC) interactions at the LHC. We reinterpret the experimental results of a search for direct single top quark production ... More
Deep Multiple Instance Learning for Airplane Detection in High Resolution ImageryAug 19 2018Automatic airplane detection in aerial imagery has a variety of applications. Two of the major challenges in this area are variations in scale and direction of the airplanes. In order to solve these challenges, we present a rotation-and-scale invariant ... More
The Temperature - Magnetic Field Relation in Observed and Simulated SunspotsNov 27 2017Observations of a relation between continuum intensity and magnetic field strength in sunspots have been made during nearly five decades. This work presents full-Stokes measurements of the full-split (g = 3) line Fe I 1564.85 nm with spatial resolution ... More
Assessment of Customer Credit through Combined Clustering of Artificial Neural Networks, Genetics Algorithm and Bayesian ProbabilitiesDec 30 2013Today, with respect to the increasing growth of demand to get credit from the customers of banks and finance and credit institutions, using an effective and efficient method to decrease the risk of non-repayment of credit given is very necessary. Assessment ... More