Results for "Maryam Shahi"

total 641took 0.14s
Frequency-dependent photothermal measurement of thermal diffusivity for opaque and non-opaque materials; Application to crystals of TIPS-pentaceneOct 17 2018We propose the use of a frequency-dependent photothermal measurement as a complement to light-flash, i.e. time-dependent, measurements to determine the through-plane thermal diffusivity of small, thin samples, e.g. semiconducting polymers and small organic ... More
Characterization and Characteristics of mechanochemically synthesized amorphous fast ionic conductor 50 SISOMO (50AgI-25Ag2O-25MoO3)Apr 07 2012Mechanochemically synthesized amorphous 50SISOMO [50AgI-25Ag_2O-25MoO_3] fast ionic conductor shows high ionic conductivity of ~ 6x10^-3 {\Omega}^-1 cm-1 at room temperature. The highest ionic conductivity is achieved for 36 h milled sample, which is ... More
Frequency Response of the Mechanochemically Synthesized AgI-Ag2O-B2O3 Superionic GlassesMar 20 2007The synthesis of xAgI(1-x)[Ag2O.B2O3] amorphous superionic conductors is done via mechanochemical synthesis route (for x = 0.5 and 0.7). Ionic conductivities of 3 mOhm-1cm-1 for x = 0.5 sample and 5mOhm-1cm-1 for x = 0.7 sample at room temperature, are ... More
On Sobolev spaces and density theorems on Finsler manifoldsOct 30 2013Let $(M,F)$ be a $C^\infty$ Finsler manifold, $p\geq 1$ a real number, $k$ a positive integer and $H_k^p (M)$ a certain Sobolev space determined by a Finsler structure $F$. Here, it is shown that the set of all real $C^{\infty}$ functions with compact ... More
Thermal Resistances of Thin-Films of Small Molecule Organic SemiconductorsJul 06 2016Sep 02 2016We have measured the thermal resistances of thin films of the small molecule organic semiconductors bis(triisopropylsilylethynyl) pentacene (TIPS-pn), bis(triethylsilylethynyl) anthradithiophene (TES-ADT) and difluoro bis(triethylsilylethynyl) anthradithiophene ... More
Ramsey numbers of $5$-uniform loose cyclesJun 14 2018Gy\'{a}rf\'{a}s et al. determined the asymptotic value of the diagonal Ramsey number of $\mathcal{C}^k_n$, $R(\mathcal{C}^k_n,\mathcal{C}^k_n),$ generating the same result for $k=3$ due to Haxell et al. Recently, the exact values of the Ramsey numbers ... More
General Approach to Study Geometric Effects on Classical & Quantum Fields & Eigenmodes of Particles with Finite & Infinite Extend for Applications in Plasmonics & Scanning Probe MicroscopyJun 05 2019This manuscript provides a general approach to the investigation of field quantization in high-curvature geometries. The models and calculations can help with understanding the elastic and inelastic scattering of photons and electrons in nanostructures ... More
Coincidence and Common Fixed Point Results for Generalized $α$-$ψ$ Contractive Type Mappings with ApplicationsJun 14 2013A new, simple and unified approach in the theory of contractive mappings was recently given by Samet \emph{et al.} (Nonlinear Anal. 75, 2012, 2154-2165) by using the concepts of $\alpha$-$\psi$-contractive type mappings and $\alpha$-admissible mappings ... More
Counting Mapping Class group orbits on hyperbolic surfacesJan 13 2016Let $S_{g,n}$ be a surface of genus $g $ with $n$ marked points. Let $X$ be a complete hyperbolic metric on $S_{g,n}$ with $n$ cusps. Every isotopy class $[\gamma]$ of a closed curve $\gamma \in \pi_{1}(S_{g,n})$ contains a unique closed geodesic on $X$. ... More
Castelnuovo-Mumford regularity and cohomological dimensionApr 09 2013Let $R=\oplus_{i\in \N_0}R_n$ be a standard graded ring, $R_+ :=\oplus_{i\in \N}R_n$ be the irrelevant ideal of $R$ and $\fa_0$ be an ideal of $R_0$. In this paper, as a generalization of the concept of Castelnouvo-Mumford regularity $\reg(M)$ of a finitely ... More
Three Dimensional Distribution of Atomic Hydrogen in the Milky WayJul 26 2012A new model for three dimensional distribution of atomic hydrogen gas in the Milky Way is derived using the 21cm LAB survey data. The global features of the gas distribution such as spiral arms are reproduced. The Galactic plane warps outside the solar ... More
Type Ib/c Supernovae with and without Gamma-Ray BurstsMay 10 2012While the connection between Long Gamma-Ray Bursts (GRBs) and Type Ib/c Supernovae (SNe Ib/c) from stripped stars has been well-established, one key outstanding question is what conditions and factors lead to each kind of explosion in massive stripped ... More
The Strongly Asynchronous Massive Access ChannelJul 26 2018This paper considers a Strongly Asynchronous and Slotted Massive Access Channel (SAS-MAC) where $K_n:=e^{n\nu}$ different users transmit a randomly selected message among $M_n:=e^{nR}$ ones within a strong asynchronous window of length $A_n:=e^{n\alpha}$ ... More
Frequency-Dependent Photothermal Measurement of Transverse Thermal Diffusivity of Organic SemiconductorsAug 13 2015Nov 30 2015We have used a photothermal technique, in which chopped light heats the front surface of a small ( ~ 1 mm2) sample and the chopping frequency dependence of thermal radiation from the back surface is measured with a liquid nitrogen cooled infrared detector. ... More
Study of Glass and Bakelite properties as electrodes in RPCsApr 14 2016May 11 2016India-based Neutrino Observatory (INO) collaboration is planning to build a magnetized Iron-CALorimeter detector (ICAL) for the study of atmospheric neutrinos. ICAL detector will be a stack of 151 layers of magnetized iron plates interleaved with Resistive ... More
On the Capacity of the AWGN Channel with Additive Radar InterferenceJan 30 2017This paper investigates the capacity of a communications channel that, in addition to additive white Gaussian noise, also suffers from interference caused by a co-existing radar transmission. The radar interference (of short duty-cycle and of much wider ... More
Asymptotic Theory for M-Estimates in Unstable AR(p) Processes with Infinite Variance InnovationsJun 18 2015In this paper, we present the asymptotic distribution of M-estimators for parameters in non-stationary AR(p) processes. The innovations are assumed to be in the domain of attraction of a stable law with index $0<\alpha\le2$. In particular, when the model ... More
Invariant and stationary measures for the SL(2,R) action on Moduli spaceFeb 14 2013Feb 05 2016We prove some ergodic-theoretic rigidity properties of the action of SL(2,R) on moduli space. In particular, we show that any ergodic measure invariant under the action of the upper triangular subgroup of SL(2,R) is supported on an invariant affine submanifold. ... More
LdSM: Logarithm-depth Streaming Multi-label Decision TreesMay 24 2019We consider multi-label classification where the goal is to annotate each data point with the most relevant $\textit{subset}$ of labels from an extremely large label set. Efficient annotation can be achieved with balanced tree predictors, i.e. trees with ... More
Attached and Assoiciated Primes Of Local Cohomology Modules Via LinkageJun 12 2018Let $R$ be a commutative Noetherian ring and $M$ be a finitely generated $R$-module. Considering the new concept of linkage of ideals over a module, we study associated prime ideals, cofiniteness and Artinianness of local cohomology modules of $M$ with ... More
Bootstrapping the Mean Vector for the Observations in the Domain of Attraction of a Multivariate Stable LawOct 07 2015Dec 12 2016We consider a robust estimation of the mean vector for a sequence of i.i.d. observations in the domain of attraction of a stable law with different indices of stability, $DS(\alpha_1, \ldots, \alpha_p)$, such that $1<\alpha_{i}\leq 2$, $i=1,\ldots,p$. ... More
The boundary of an affine invariant submanifoldAug 06 2015Sep 15 2015We study the boundary of an affine invariant submanifold of a stratum of translation surfaces in a partial compactification consisting of all finite area Abelian differentials over nodal Riemann surfaces, modulo zero area components. The main result is ... More
Asymptotic Theory for M-Estimates in Unstable AR(p) Processes with Infinite Variance InnovationsJun 18 2015Dec 12 2016In this paper, we present the asymptotic distribution of M-estimators for parameters in non-stationary AR(p) processes. The innovations are assumed to be in the domain of attraction of a stable law with index $0<\alpha\le2$. In particular, when the model ... More
On a Projectively Invariant Pseudo-distance in Finsler geometryFeb 17 2015Here, a non-linear analysis method is applied rather than classical one to study projective changes of Finsler metrics. More intuitively, a projectively invariant pseudo-distance is introduced and characterized with respect to the Ricci tensor and its ... More
On infinite dimensional linear programming approach to stochastic controlNov 30 2016We consider the infinite dimensional linear programming (inf-LP) approach for solving stochastic control problems. The inf-LP corresponding to problems with uncountable state and input spaces is in general computationally intractable. By focusing on linear ... More
Mass-like gap creation by mixed singlet and triplet state in superconducting topological insulatorMar 04 2019We investigate proximity-induced mixed spin-singlet and spin-triplet superconducting state on the surface states of a topological insulator. Such hybrid structure features fundamentally distinct electron-hole excitations and resulting effective superconducting ... More
Blended Learning or E-learning?Jun 18 2013ICT or Information and Communication Technology has pervaded the fields of education.In recent years the term e-learning has emerged as a result of the integration of ICT in the education fields. Following the application this technology into teaching, ... More
Dynamics of dissipative multiple exciton generation in nanocrystalsJan 18 2013The population dynamics of single- and bi-exciton states in semiconductor nanocrystals is modeled numerically in the presence of Coulomb coupling between single- and two-exciton states and a dissipation channel in order to study the transient bi-exciton ... More
On a fixed point in the metric space of normalized Hausdorff moment sequencesMar 19 2010We show that the transformation (x_n)_{n\ge 1}\to (1/(1+x_1+...+x_n))_{n\ge 1} of the compact set of sequences (x_n)_{n\ge 1} of numbers from the unit interval [0,1] has a unique fixed point, which is attractive. The fixed point turns out to be a Hausdorff ... More
Random Distances Associated with TrapezoidsMay 10 2013The distributions of the random distances associated with hexagons, rhombuses and triangles have been derived and verified in the existing work. All of these geometric shapes are related to each other and have various applications in wireless communications, ... More
Analysis of Novel Annotations in the Gene Ontology for Boosting the Selection of Negative ExamplesMay 23 2018Public repositories for genome and proteome annotations, such as the Gene Ontology (GO), rarely stores negative annotations, i.e. proteins not possessing a given function. This leaves undefined or ill defined the set of negative examples, which is crucial ... More
Generalized Center Problems with OutliersMay 06 2018We study the $\mathcal{F}$-center problem with outliers: given a metric space $(X,d)$, a general down-closed family $\mathcal{F}$ of subsets of $X$, and a parameter $m$, we need to locate a subset $S\in \mathcal{F}$ of centers such that the maximum distance ... More
The influence of outflow and global magnetic field on the structure and spectrum of resistive CDAFsMay 23 2017We examine the effects of a global magnetic field and outflow on radiatively inefficient accretion flow (RIAF) in the presence of magnetic resistivity. We find a self-similar solutions for the height integrated equations that govern the behavior of the ... More
The influence of large scale magnetic field in the structure of supercritical accretion flow with outflowMay 21 2017We present the effects of ordered large scale magnetic field on the structure of supercritical accretion flow in the presence of outflow. In the cylindrical coordinates ($r, \varphi,z$), We write the 1.5 dimensional, the steady state ($\frac{\partial}{\partial ... More
Learning Generalized Nash Equilibria in a Class of Convex GamesMar 12 2017Oct 15 2018We consider multi-agent decision making where each agent optimizes its convex cost function subject to individual and coupling constraints. The constraint sets are compact convex subsets of a Euclidean space. To learn Nash equilibria, we propose a novel ... More
On improvement of Young inequality using the Kontrovich constantMay 09 2016Some improvements of Young inequality and its reverse for positive numbers with Kontrovich constant are given. Using these inequalities some operator versions and Hilbert-Schmidt norm versions for matrices are proved.
Transport properties of spin-triplet superconducting monolayer $MoS_2$Mar 07 2016The quantum transport properties of graphene and monolayer $MoS_2$ superconductor heterostructures has been of considerable importance in the recent few years. Layered nature of molybdenum disulfide permits the superconducting correlation induction. Moreover, ... More
Canonical modules of complexesMar 01 2016We define the notion of the canonical module of a complex. We then consider Serre's conditions for a complex and study their relationship to the local cohomology of the canonical module and its ring of endomorphisms.
Forecasting the Colorado River Discharge Using an Artificial Neural Network (ANN) ApproachNov 27 2014Artificial Neural Network (ANN) based model is a computational approach commonly used for modeling the complex relationships between input and output parameters. Prediction of the flow rate of a river is a requisite for any successful water resource management ... More
The Statefinder hierarchy: An extended null diagnostic for concordance cosmologyJan 18 2011We show how higher derivatives of the expansion factor can be developed into a null diagnostic for concordance cosmology (LCDM). It is well known that the Statefinder -- the third derivative of the expansion factor written in dimensionless form, a^{(3)}/aH^3, ... More
The Effect of Large Scale Magnetic Field on Outflow in ADAFs: an Odd Symmetry ConfigurationNov 11 2015We construct self-similar inflow-outflow solutions for a hot viscous-resistive accretion flow with large scale magnetic fields that have odd symmetry with respect to the equatorial plane in $B_\theta$, and even symmetry in $B_r$ and $B_\phi$. Following ... More
The boundary of an affine invariant submanifoldAug 06 2015Nov 02 2016We study the boundary of an affine invariant submanifold of a stratum of translation surfaces in a partial compactification consisting of all finite area Abelian differentials over nodal Riemann surfaces, modulo zero area components. The main result is ... More
G-Gorenstein complexesAug 26 2014We present in the context of Gorenstein homological algebra the notion of a "G-Gorenstein complex" as the counterpart of the classical notion of a Gorenstein complex. In particular, we investigate equivalences between the category of G-Gorenstein complexes ... More
Computational approach to quantum encoder design for purity optimizationJun 13 2006Jul 27 2007In this paper, we address the problem of designing a quantum encoder that maximizes the minimum output purity of a given decohering channel, where the minimum is taken over all possible pure inputs. This problem is cast as a max-min optimization problem ... More
Learning Nash Equilibria in Monotone GamesApr 03 2019We consider multi-agent decision making where each agent's cost function depends on all agents' strategies. We propose a distributed algorithm to learn a Nash equilibrium, whereby each agent uses only obtained values of her cost function at each joint ... More
Navier-Stokes equations on Riemannian manifoldsDec 21 2018Mar 05 2019We study properties of the solutions to Navier-Stokes system on compact Riemannian manifolds. The motivation for such a formulation comes from atmospheric models as well as some thin film flows on curved surfaces. There are different choices of the diffusion ... More
Robust Distributed Control Beyond Quadratic InvarianceMar 14 2018Mar 09 2019The problem of robust distributed control arises in several large-scale systems, such as transportation networks and power grid systems. In many practical scenarios controllers might not have enough information to make globally optimal decisions in a ... More
On the Fractional Derivatives of Radial Basis FunctionsDec 22 2016The paper provides the fractional integrals and derivatives of the Rie\-mann-Liouville and Caputo type for the five kinds of radial basis functions (RBFs), including the powers, Gaussian, multiquadric, Matern and thin-plate splines, in one dimension. ... More
Relative Cohen-Macaulayness and relative unmixedness of bigraded modulesMay 16 2011In this paper we study the finitely generated bigraded modules over a standard bigraded polynomial ring which are relative Cohen-Macaulay or relative unmixed with respect to one of the irrelevant bigraded ideals. A generalization of Reisner's criterion ... More
Development and characterization of single gap glass RPCMar 05 2016Oct 14 2016India-based Neutrino Observatory (INO) facility is going to have a 50 kton magnetized Iron CALorimeter (ICAL) detector for precision measurements of neutrino oscillations using atmospheric neutrinos. The proposed ICAL detector will be a stack of magnetized ... More
LRS Bianchi Type-V Viscous Fluid Universe With a Time Dependent Cosmological Term $Λ$Apr 06 2007Aug 06 2007An LRS Bianchi type-V cosmological models representing a viscous fluid distribution with a time dependent cosmological term $\Lambda$ is investigated. To get a determinate solution, the viscosity coefficient of bulk viscous fluid is assumed to be a power ... More
Bootstrapping the Mean Vector for the Observations in the Domain of Attraction of a Multivariate Stable LawOct 07 2015We consider a robust estimation of the mean vector for a sequence of i.i.d. observations in the domain of attraction of a stable law with different indices of stability, $DS(\alpha_1, \ldots, \alpha_p)$, such that $1<\alpha_{i}\leq 2$, $i=1,\ldots,p$. ... More
Full rank affine invariant submanifoldsAug 06 2016We show that every GL(2, R) orbit closure of translation surfaces is either a connected component of a stratum, the hyperelliptic locus, or consists entirely of surfaces whose Jacobians have extra endomorphisms. We use this result to give applications ... More
Navier-Stokes equations on Riemannian manifoldsDec 21 2018We study properties of the solutions to Navier-Stokes system on compact Riemannian manifolds. The motivation for such a formulation comes from atmospheric models as well as some thin film flows on curved surfaces. There are different choices of the diffusion ... More
On redundancy of memoryless sources over countable alphabetsMar 31 2014The minimum average number of bits need to describe a random variable is its entropy, assuming knowledge of the underlying statistics On the other hand, universal compression supposes that the distribution of the random variable, while unknown, belongs ... More
Linkage of ideals over a moduleSep 11 2017Oct 15 2018Inspired by the works in linkage theory of ideals, we define the concept of linkage of ideals over a module. Several known theorems in linkage theory are improved or recovered by new approaches. Specially, we make some extensions and generalizations of ... More
Cohomological dimension with respect to the linked idealsJun 09 2018Let $R$ be a commutative Noetherian ring and $M$ be a finitely generated $R$-module. Considering the new concept of linkage of ideals over a module, we study the cohomological dimension of $M$ with respect to the linked ideals over it.
Invariant and stationary measures for the SL(2,R) action on Moduli spaceFeb 14 2013Feb 05 2018We prove some ergodic-theoretic rigidity properties of the action of SL(2,R) on moduli space. In particular, we show that any ergodic measure invariant under the action of the upper triangular subgroup of SL(2,R) is supported on an invariant affine submanifold. ... More
Graph Operations and Neighborhood PolynomialsJul 11 2018The neighborhood polynomial of graph $G$ is the generating function for the number of vertex subsets of $G$ of which the vertices have a common neighbor in $G$. In this paper, we investigate the behavior of this polynomial under several graph operations. ... More
Counting closed geodesics in Moduli spaceNov 14 2008Mar 19 2011We compute the asymptotics, as R tends to infinity, of the number of closed geodesics in Moduli space of length at most R, or equivalently the number of pseudo-Anosov elements of the mapping class group of translation length at most R.
Characterization of some special rings via linkageMar 07 2018Some descriptions of linked ideals in a commutative Notherian ring $R$ are provided in terms of the Associated prime ideals of $R$. Then, among other things, we make some characterization of Cohen-Macaulay, Gorenstein and regular local rings in terms ... More
Origin of the size-dependence of the equilibrium van der Waals binding between nanostructuresFeb 03 2018Nanostructures can be bound together at equilibrium by the van der Waals (vdW) effect, a small but ubiquitous many-body attraction that presents challenges to density functional theory. How does the binding energy depend upon the size or number of atoms ... More
M3: An Open Model for Measuring Code ArtifactsDec 04 2013This document details design considerations of M3: a meta model for source code artifacts
Tail redundancy and its characterization of compression of memoryless sourcesSep 19 2018We obtain a single-letter characterization that is both necessary and sufficient for sequences generated \iid from a collection $\cP$ of distributions over a countably infinite alphabet to be (average-case) strongly compressible. Contrary to the worst ... More
Lifshitz Formula Using Box Renormalization (In Persian)Jun 05 2018In this paper the Lifshitz formula for the Casimir energy between two dielectrics in zero temperature is derived using box renormalization. Although there are several derivations for the force in this case in the literature, including Lifshitz's own proof, ... More
Analytical solutions of the geodesic equation in the space-time of a black hole surrounded by perfect fluid in Rastall theoryJun 02 2018Jun 26 2019In this paper, we investigate the geodesic motion of massive and massless test particles in the vicinity of a black hole space-time surrounded by perfect fluid (quintessence, dust, radiation, cosmological constant and phantom) in Rastall theory. We obtain ... More
Clique-coloring of $K_{3,3}$-minor free graphsJan 07 2018A clique-coloring of a given graph $G$ is a coloring of the vertices of $G$ such that no maximal clique of size at least two is monocolored. The clique-chromatic number of $G$ is the least number of colors for which $G$ admits a clique-coloring. It has ... More
Unified Approach to Convex Robust Distributed Control given Arbitrary Information StructuresNov 14 2017Mar 09 2019We consider the problem of computing optimal linear control policies for linear systems in finite-horizon. The states and the inputs are required to remain inside pre-specified safety sets at all times despite unknown disturbances. In this technical note, ... More
Anchoring polar magnetic field in a stationary thick accretion diskJul 22 2017We investigate the properties of a hot accretion flow bathed in a poloidal magnetic field. We consider an axisymmetric viscous resistive flow in the steady state configuration. We assume the dominant mechanism of energy dissipation is due to turbulence ... More
Sperner's colorings and optimal partitioning of the simplexNov 25 2016We discuss coloring and partitioning questions related to Sperner's Lemma, originally motivated by an application in hardness of approximation. Informally, we call a partitioning of the $(k-1)$-dimensional simplex into $k$ parts, or a labeling of a lattice ... More
Full rank affine invariant submanifoldsAug 06 2016Oct 22 2017We show that every GL(2, R) orbit closure of translation surfaces is either a connected component of a stratum, the hyperelliptic locus, or consists entirely of surfaces whose Jacobians have extra endomorphisms. We use this result to give applications ... More
Ramsey numbers of uniform loose paths and cyclesFeb 17 2016Recently, determining the Ramsey numbers of loose paths and cycles in uniform hypergraphs has received considerable attention. It has been shown that the $2$-color Ramsey number of a $k$-uniform loose cycle $\mathcal{C}^k_n$, $R(\mathcal{C}^k_n,\mathcal{C}^k_n)$, ... More
Enumerations, Forbidden Subgraph Characterizations, and the Split-DecompositionAug 04 2016Forbidden characterizations may sometimes be the most natural way to describe families of graphs, and yet these characterizations are usually very hard to exploit for enumerative purposes. By building on the work of Gioan and Paul (2012) and Chauve et ... More
Decomposable Norm Minimization with Proximal-Gradient Homotopy AlgorithmJan 27 2015Sep 27 2016We study the convergence rate of the proximal-gradient homotopy algorithm applied to norm-regularized linear least squares problems, for a general class of norms. The homotopy algorithm reduces the regularization parameter in a series of steps, and uses ... More
Inter-band Coulomb coupling in narrow gap semiconductor nanocrystals: $\mathbf{k}\cdot\mathbf{p}$ theoryOct 18 2014May 01 2015We derive the matrix elements of Coulomb interaction between states with different number of electrons and holes in a semiconductor nanocrystal within the 8-band $\mathbf{k}\cdot\mathbf{p}$ theory. These matrix elements are responsible for multiple exciton ... More
Mapping the Probability of Microlensing Detection of Extra-Solar PlanetsNov 22 2009The growing rate of increase in the number of the discovered extra-solar planets which has consequently raised the enthusiasm to explore the universe in hope of finding earth-like planets has resulted in the wide use of Gravitational Microlensing as a ... More
Predicting a Business Star in Yelp from Its Reviews Text AloneJan 05 2014Yelp online reviews are invaluable source of information for users to choose where to visit or what to eat among numerous available options. But due to overwhelming number of reviews, it is almost impossible for users to go through all reviews and find ... More
Optimization and numerical simulation for the accelerator of the commercial H- cyclotron ion sourceJun 05 2013A new ion source will be prepared for the CYCLONE30 commercial cyclotron with a much advanced performance compared with the previous one. The newly designed ion source has a very large transparency without deteriorating the beam optics, which is designed ... More
FWM in One-dimensional Nonlinear Photonic Crystal and Theoretical Investigation of Parametric Down Conversion Efficiency (Steady State Analysis)Nov 06 2006We study the light propagation in one-dimensional photonic crystal via nonlinear Four Wave Mixing (FWM) process. The linear and nonlinear refractive indexes are approximated with the first Fourier harmonic term. A system of the nonlinear coupled mode ... More
Patterns of polar domains in a spatiotemporal model of interacting polaritiesJun 06 2019Polarity fields are known to exhibit long distance patterns, in both physical and biological systems. The mechanisms behind such patterns are poorly understood. Here, we describe the dynamics of polarity fields using an original physical model that generalizes ... More
Outage-Optimized Deployment of UAVsApr 15 2019We consider multiple unmanned aerial vehicles (UAVs) serving a density of ground terminals (GTs) as mobile base stations. The objective is to minimize the outage probability of GT-to-UAV transmissions. In this context, the optimal placement of UAVs under ... More
Core-Selecting Mechanisms in Electricity MarketsNov 23 2018Due to its theoretical virtues, several recent works propose the use of the incentive-compatible Vickrey-Clarke-Groves (VCG) mechanism for electricity markets. Coalitions of participants, however, can influence the VCG outcome to obtain higher collective ... More
Thermal diffusivity of PMMA/Alumina Nano Composites Using Molecular Dynamic SimulationOct 04 2017Fire protection mainly takes place through physical or chemical pathways or both of them. The thermal diffusivity is one of the basic thermophysical properties which can connect the chemical structure. It is well-known in the literature that there exist ... More
Online Continuous DR-Submodular Maximization with Long-Term Budget ConstraintsJun 30 2019In this paper, we study a class of online optimization problems with long-term budget constraints where the objective functions are not necessarily concave (nor convex) but they instead satisfy the Diminishing Returns (DR) property. Specifically, a sequence ... More
Optimal design of dilution experiments under volume constraintsDec 13 2012May 07 2013The paper develops methods to construct a one-stage optimal design of dilution experiments under the total available volume constraint typical for bio-medical applications. We consider various design criteria based on the Fisher information both is Bayesian ... More
A modification of the generalized shift-splitting method for singular saddle point problemsMay 19 2016Oct 18 2016A modification of the generalized shift-splitting (GSS) method is presented to solve singular saddle point problems. In this kind of modification, the diagonal shift matrix is replaced by a block diagonal matrix which is symmetric positive definite. Semi-convergence ... More
Invariant $\varphi $-means on multiplier completion of Banach algebras with application to hypergroupsMar 23 2019Let ${\mathcal A}$ be a Banach algebra and let $\varphi $ be a non-zero character on ${\mathcal A}$. Suppose that ${\mathcal A}_M$ is the closure of the faithful Banach algebra ${\mathcal A}$ in the multiplier norm. In this paper, topologically left invariant ... More
On the rate of graded modulesOct 30 2014Let $K$ be a field, $R$ a standard graded $K$-algebra and $M$ be a finitely generated graded $R$-module. The rate of $M$, $rate_R(M)$, is a measure of the growth of the shifts in the minimal graded free resolution of $M$. In this paper, we find upper ... More
The energy and spectrum of non commuting graphFeb 02 2019Let G be a non-abelian group and Z(G) be the center of G. The non-commuting graph {\Gamma}(G) of G is a graph with vertex set is non central elements of G and two vertices x, y are adjacent if and only if they are commute. In this paper we calculate the ... More
Detection and Characterization of Extrasolar Planets through Mean-Motion Resonances. II. The Effect of the Planet's Orbital Eccentricity on Debris Disk StructuresSep 28 2017Structures observed in debris disks may be caused by gravitational interaction with planetary or stellar companions. These perturbed disks are often thought to indicate the presence of planets and offer insights into the properties of both the disk and ... More
Simulating Brain Reaction to Methamphetamine Regarding Consumer PersonalityAug 11 2015Addiction, as a nervous disease, can be analysed using mathematical modelling and computer simulations. In this paper, we use an existing mathematical model to predict and simulate human brain response to the consumption of a single dose of methamphetamine. ... More
Unravelling Metamaterial Properties in Zigzag-base Folded SheetsFeb 20 2015Jun 03 2015Creating complex spatial objects from a flat sheet of material using origami folding techniques has attracted attention in science and engineering. In the present work, we employ geometric properties of partially folded zigzag strips to better describe ... More
Moving Fractional Branes with Background Fields: Interaction and Tachyon CondensationAug 09 2015We calculate the bosonic boundary state corresponding to a moving fractional D$p$-brane in a partially orbifoldized spacetime $\mathbb{R}^{1, d-5} \times\mathbb{C}^{2}/\mathbb{Z}_{2}$ in the presence of the Kalb-Ramond field, the $U(1)$ gauge potential ... More
Cellular buckling in stiffened platesMay 01 2014An analytical model based on variational principles for a thin-walled stiffened plate subjected to axial compression is presented. A system of nonlinear differential and integral equations is derived and solved using numerical continuation. The results ... More
A Mixed Integer Programming Model Formulation for Solving the Lot-Sizing ProblemMay 28 2012This paper addresses a mixed integer programming (MIP) formulation for the multi-item uncapacitated lot-sizing problem that is inspired from the trailer manufacturer. The proposed MIP model has been utilized to find out the optimum order quantity, optimum ... More
On the rate of graded modulesOct 30 2014Jan 23 2017Let $K$ be a field, $R$ a standard graded $K$-algebra and $M$ be a finitely generated graded $R$-module. The rate of $M$, $rate_R(M)$, is a measure of the growth of the shifts in the minimal graded free resolution of $M$. In this paper, we find upper ... More
Illumination Invariant Foreground Object Segmentation using ForeGANsFeb 07 2019The foreground segmentation algorithms suffer performance degradation in the presence of various challenges such as dynamic backgrounds, and various illumination conditions. To handle these challenges, we present a foreground segmentation method, based ... More
K-g-frames and approximate K-g-duals in Hilbert spacesOct 07 2018Approximate duality of frame pairs have been investigated by Christensen and Laugesen in (Sampl. Theory Signal Image Process., 9, 2011, 77-90), with the motivation to obtain an important applications in Gabor systems, wavelets and general frame theory. ... More
Interaction of Dynamical Fractional Branes with Background Fields: Superstring CalculationsApr 15 2017Jul 23 2017We compute the boundary state corresponding to a fractional D$p$-brane with transverse motion and internal background fields: Kalb-Ramond and a $U(1)$ gauge field. The spacetime has the orbifold structure $\mathbb{R}^{1,5} \times\mathbb{C}^{2}/\mathbb{Z}_{2}$. ... More
Moving Fractional Branes with Background Fields: Interaction and Tachyon CondensationAug 09 2015Jul 19 2017We calculate the bosonic boundary state corresponding to a moving fractional D$p$-brane in a partially orbifoldized spacetime $\mathbb{R}^{1, d-5} \times\mathbb{C}^{2}/\mathbb{Z}_{2}$ in the presence of the Kalb-Ramond field, the $U(1)$ gauge potential ... More