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Results for "Ali Al-Masoudi"

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Lattice-induced photon scattering in an optical lattice clockFeb 08 2018Jul 19 2018We investigate scattering of lattice laser radiation in a strontium optical lattice clock and its implications for operating clocks at interrogation times up to several tens of seconds. Rayleigh scattering does not cause significant decoherence of the ... More
A simple approach to construct confidence bands for a regression function with incomplete dataDec 07 2018A long-standing problem in the construction of asymptotically correct confidence bands for a regression function $m(x)=E[Y|X=x]$, where $Y$ is the response variable influenced by the covariate $X$, involves the situation where $Y$ values may be missing ... More
Efficient, Single Hop Time Synchronization Protocol For Randomly Connected WSNsApr 10 2017This paper develops a fast, accurate and energy-efficient time synchronization protocol in wireless sensor networks that operate in harsh environments. The suggested protocol concept is based on an electrical physical metaphor. The protocol treats the ... More
Active and Passive Portfolio Management with Latent FactorsMar 16 2019We address a portfolio selection problem that combines active (outperformance) and passive (tracking) objectives using techniques from convex analysis. We assume a general semimartingale market model where the assets' growth rate processes are driven ... More
Predictive genomics: A cancer hallmark network framework for predicting tumor clinical phenotypes using genome sequencing dataAug 09 2014We discuss a cancer hallmark network framework for modelling genome-sequencing data to predict cancer clonal evolution and associated clinical phenotypes. Strategies of using this framework in conjunction with genome sequencing data in an attempt to predict ... More
Arabic Text Diacritization Using Deep Neural NetworksApr 25 2019Diacritization of Arabic text is both an interesting and a challenging problem at the same time with various applications ranging from speech synthesis to helping students learning the Arabic language. Like many other tasks or problems in Arabic language ... More
A Factor-Graph Approach to Algebraic Topology, With Applications to Kramers--Wannier DualityJul 05 2016Jul 13 2018Algebraic topology studies topological spaces with the help of tools from abstract algebra. The main focus of this paper is to show that many concepts from algebraic topology can be conveniently expressed in terms of (normal) factor graphs. As an application, ... More
Incremental and Decremental Secret Key AgreementMay 06 2016We study the rate of change of the multivariate mutual information among a set of random variables when some common randomness is added to or removed from a subset. This is formulated more precisely as two new multiterminal secret key agreement problems ... More
Analytical Approximate Solutions of Systems of Multi-pantograph Delay Differential Equations Using Residual Power-series MethodNov 16 2016Dec 03 2016This paper investigates analytical approximate solutions for a system of multipantograph delay differential equations using the residual power series method (RPSM), which obtains a Taylor expansion of the solutions and produces the exact form in terms ... More
New Approach to the Stability of Chemical Reaction Networks: Piecewise Linear in Rates Lyapunov FunctionsJul 02 2014Sep 07 2016Piecewise-Linear in Rates (PWLR) Lyapunov functions are introduced for a class of Chemical Reaction Networks (CRNs). In addition to their simple structure, these functions are robust with respect to arbitrary monotone reaction rates, of which mass-action ... More
Info-Clustering: An Efficient Algorithm by Network Information FlowFeb 01 2017Motivated by the fact that entities in a social network or biological system often interact by exchanging information, we propose an efficient info-clustering algorithm that can group entities into communities using a parametric max-flow algorithm. This ... More
A detailed comparative study of open source deep learning frameworksFeb 25 2019Deep Learning (DL) is one of the hottest trends in machine learning as DL approaches produced results superior to the state-of-the-art in problematic areas such as image processing and natural language processing (NLP). To foster the growth of DL, several ... More
Device vs Edge Computing for Mobile Services: Delay-aware Decision Making to Minimize Power ConsumptionNov 10 2017Jun 21 2019A promising technique to provide mobile applications with high computation resources is to offload the processing task to the cloud. Utilizing the abundant processing capabilities of the clouds, mobile edge computing enables mobile devices with limited ... More
Guidelines for developing optical clocks with $10^{-18}$ fractional frequency uncertaintyJun 27 2019There has been tremendous progress in the performance of optical frequency standards since the first proposals to carry out precision spectroscopy on trapped, single ions in the 1970s. The estimated fractional frequency uncertainty of today's leading ... More
Duality between Feature Selection and Data ClusteringSep 27 2016The feature-selection problem is formulated from an information-theoretic perspective. We show that the problem can be efficiently solved by a recently proposed info-clustering paradigm. This reveals the fundamental duality between feature selection and ... More
Narrowband Interference Mitigation in SC-FDMA Using Bayesian Sparse RecoveryOct 08 2014This paper presents a novel narrowband interference (NBI) mitigation scheme for SC-FDMA systems. The proposed NBI cancellation scheme exploits the frequency domain sparsity of the unknown signal and adopts a low complexity Bayesian sparse recovery procedure. ... More
Receiver-based Recovery of Clipped OFDM Signals for PAPR Reduction: A Bayesian ApproachOct 08 2014Oct 21 2014Clipping is one of the simplest peak-to-average power ratio (PAPR) reduction schemes for orthogonal frequency division multiplexing (OFDM). Deliberately clipping the transmission signal degrades system performance, and clipping mitigation is required ... More
Aggregated Learning: A Deep Learning Framework Based on Information-Bottleneck Vector QuantizationJul 26 2018Feb 12 2019Based on the notion of information bottleneck (IB), we formulate a quantization problem called "IB quantization". We show that IB quantization is equivalent to learning based on the IB principle. Under this equivalence, the standard neural network models ... More
Lattice-induced photon scattering in an optical lattice clockFeb 08 2018We investigate scattering of lattice laser radiation in a strontium optical lattice clock and its implications for operating clocks at interrogation times up to several ten seconds. Rayleigh scattering does not cause significant decoherence of the atomic ... More
Design Challenges of Multi-UAV Systems in Cyber-Physical Applications: A Comprehensive Survey, and Future DirectionsOct 23 2018Unmanned Aerial Vehicles (UAVs) have recently rapidly grown to facilitate a wide range of innovative applications that can fundamentally change the way cyber-physical systems (CPSs) are designed. CPSs are a modern generation of systems with synergic cooperation ... More
An Overview of Video Allocation Algorithms for Flash-based SSD Storage SystemsApr 11 2012Despite the fact that Solid State Disk (SSD) data storage media had offered a revolutionary property storages community, but the unavailability of a comprehensive allocation strategy in SSDs storage media, leads to consuming the available space, random ... More
Virtual Black Holes from Generalized Uncertainty Principle and Proton DecayMar 26 2017Aug 22 2017We investigate the formation of virtual black holes in the context of generalized uncertainty principle (GUP), as a mediator for a proton decay process which is forbidden by the standard model. Then, we calculate the lower bounds of the GUP deformation ... More
Image Compression Using Proposed Enhanced Run Length Encoding AlgorithmMar 15 2018In this paper, we will present p roposed enhance process of image compression by using RLE algorithm. This proposed yield to decrease the size of compressing image, but the original method used primarily for compressing a binary images [1].Which will ... More
Noise and instability of an optical lattice clockJul 17 2015Nov 03 2015We present an analysis of the different types of noise from the detection and interrogation laser in our strontium lattice clock. We develop a noise model showing that in our setup quantum projection noise--limited detection is possible if more than 130~atoms ... More
The Nucleosynthesis and Reaction Rates of Fluorine 19 ($^{19}F$) in the SunApr 21 2019We investigate the abundance of $^{19}F$ in the Sun through the nucleosynthesis scenario. In addition, we calculate the rate equations and reaction rates of the nucleosynthesis of $^{19}F$ at different temperature scale. Other important functions of this ... More
A new relaxed HSS preconditioner for saddle point problemsMar 07 2016Jun 22 2016We present a preconditioner for saddle point problems. The proposed preconditioner is extracted from a stationary iterative method which is convergent under a mild condition. Some properties of the preconditioner as well as the eigenvalues distribution ... More
Retrieval of depth profile of nano scale thin films by one directional polarization analysis in neutron specular reflectometryAug 29 2011Recently it has been shown that the modules and phase of complex reflection coefficient can be determined by using a magnetic substrate and polarized neutrons. Several other methods have also been worked out based on measurement of polarizations of reflected ... More
Approximate Series Solution of Nonlinear, Fractional Klein-Gordon Equations Using Fractional Reduced Differential Transform MethodApr 23 2017This analysis proposes an analytical-numerical approach for providing solutions of a class of nonlinear fractional Klein-Gordon equation subjected to appropriate initial conditions in Caputo sense by using the Fractional Reduced Differential Transform ... More
Downlink Power Allocation for CoMP-NOMA in Multi-Cell NetworksDec 16 2017This work considers the problem of dynamic power allocation in the downlink of multi-cell networks, where each cell utilizes non-orthogonal multiple access (NOMA)-based resource allocation. Also, coordinated multi-point (CoMP) transmission is utilized ... More
Info-Clustering: A Mathematical Theory for Data ClusteringMay 04 2016Dec 11 2016We formulate an info-clustering paradigm based on a multivariate information measure, called multivariate mutual information, that naturally extends Shannon's mutual information between two random variables to the multivariate case involving more than ... More
Parameterization of Cherenkov Light Lateral Distribution Function as a Function of the Zenith Angle around the Knee RegionDec 15 2016Cherenkov light lateral distribution function (CLLDF) simulation was fulfilled using CORSIKA code for configurations of Tunka EAS array of different zenith angles. The parameterization of the CLLDF was carried out as a function of the distance from the ... More
Disentangling fission fragment evaporation models using TALYSFeb 21 2019Several computer codes based on phenomenological models are being developed with the aim of obtaining fission observables, such as neutron and gamma multiplicities and product yields. Key points in these calculations, which are handled differently by ... More
One directional Polarized Neutron Reflectometry with optimized reference layer methodMay 17 2012Sep 05 2012In the past decade, several neutron reflectometry methods for determining the modulus and phase of the complex reflection coefficient of an unknown multilayer thin film have been worked out among which the method of variation of surroundings and reference ... More
On the generalized shift-splitting preconditioner for saddle point problemsDec 29 2014Mar 02 2015In this paper, the generalized shift-splitting preconditioner is implemented for saddle point problems with symmetric positive definite (1,1)-block and symmetric positive semidefinite (2,2)-block. The proposed preconditioner is extracted form a stationary ... More
A preconditioner based on the shift-splitting method for generalized saddle point problemsJun 15 2015In this paper, we propose a preconditioner based on the shift-splitting method for generalized saddle point problems with nonsymmetric positive definite (1,1)-block and symmetric positive semidefinite $(2,2)$-block. The proposed preconditioner is obtained ... More
Fitted Reproducing Kernel Method for Solving a Class of Third-Order Periodic Boundary Value ProblemsApr 17 2017In this article, the reproducing kernel Hilbert space [0, 1] is employed for solving a class of third-order periodic boundary value problem by using fitted reproducing kernel algorithm. The reproducing kernel function is built to get fast accurately and ... More
On the usefulness of information hiding techniques for wireless sensor networks securityJun 25 2017A wireless sensor network (WSN) typically consists of base stations and a large number of wireless sensors. The sensory data gathered from the whole network at a certain time snapshot can be visualized as an image. As a result, information hiding techniques ... More
On the Module of Internet Banking SystemMay 21 2010Because of the speed, flexibility, and efficiency that it offers, the Internet has become the means for conducting growing numbers of transactions between suppliers and large international corporations. In this way, the Internet has opened new markets ... More
Rapid Classification of Crisis-Related Data on Social Networks using Convolutional Neural NetworksAug 12 2016The role of social media, in particular microblogging platforms such as Twitter, as a conduit for actionable and tactical information during disasters is increasingly acknowledged. However, time-critical analysis of big crisis data on social media streams ... More
Elasticizing Linux via Joint Disaggregation of Memory and ComputationJun 03 2018In this paper, we propose a set of operating system primitives which provides a scaling abstraction to cloud applications in which they can transparently be enabled to support scaled execution across multiple physical nodes as resource needs go beyond ... More
No Switching Policy is Optimal for a Positive Linear System with a Bottleneck EntranceMay 21 2019We consider a nonlinear SISO system that is a cascade of a scalar "bottleneck entrance" and an arbitrary Hurwitz positive linear system. This system entrains i.e. in response to a $T$-periodic inflow every solution converges to a unique $T$-periodic solution ... More
Polarized Neutron Reflectometry at the Presence of Smooth Interfacial PotentialAug 29 2011Polarized neutron reflectometry (PNR) have developed theoretically and experimentally in the past decades. In order to resolve the phase problem in neutron reflectometry, several simulation methods have been proposed such as reference layer and the variation ... More
Particle Dynamics Around the Black StringJul 10 2017Feb 01 2018In this paper, we study some dynamical properties of neutral and charged particles around a weakly magnetized five dimensional black string. In addition, we calculate the Innermost Stable Circular Orbit (ISCO) of this metric in the presence of a magnetic ... More
Modeling and Analysis of Abnormality Detection in Biomolecular Nano-NetworksMay 30 2012Sep 17 2012A scheme for detection of abnormality in molecular nano-networks is proposed. This is motivated by the fact that early diagnosis, classification and detection of diseases such as cancer play a crucial role in their successful treatment. The proposed nano-abnormality ... More
A high-performance optical lattice clock based on bosonic atomsMar 08 2018Optical lattice clocks with uncertainty and instability in the $10^{-17}$-range and below have so far been demonstrated exclusively using fermions. Here, we demonstrate a bosonic optical lattice clock with $3\times 10^{-18}$ instability and $2.0\times ... More
A Virtual Conversational Agent for Teens with Autism: Experimental Results and Design LessonsNov 07 2018Jan 03 2019We present the design of an online social skills development interface for teenagers with autism spectrum disorder (ASD), who often lack access to social skills training. The interface is intended to enable private conversation practice anywhere, anytime ... More
Role of Zinc and Niobium in the Giant Piezoelectric Response of PbZn1/3Nb2/3O3Dec 11 2014Relaxor ferroelectric perovskites are highly polarizable and can exhibit giant coupling between elastic strain and an applied electric field. Here, we report an in situ extended X-ray absorption fine structure (EXAFS) study of a PbZn1/3Nb2/3O3 (PZN) single ... More
Non-Reciprocity Compensation Combined with Turbo Codes for Secret Key Generation in Vehicular Ad Hoc Social IoT NetworksAug 03 2018The physical attributes of the dynamic vehicle-to-vehicle (V2V) propagation channel can be utilised for the generation of highly random and symmetric cryptographic keys. However, in a physical-layer key agreement scheme, non-reciprocity due to inherent ... More
Characterization of migrated seismic volumes using texture attributes: a comparative studyJan 30 2019In this paper, we examine several typical texture attributes developed in the image processing community in recent years with respect to their capability of characterizing a migrated seismic volume. These attributes are generated in either frequency or ... More
A strontium lattice clock with $3 \times 10^{-17}$ inaccuracy and its frequencyDec 12 2013Aug 15 2014We have measured the absolute frequency of the optical lattice clock based on $^{87}$Sr at PTB with an uncertainty of $3.9\times 10^{-16}$ using two caesium fountain clocks. This is close to the accuracy of today's best realizations of the SI second. ... More
Tailored RF pulse optimization for magnetization inversion at ultra high fieldApr 28 2010The radiofrequency (RF) transmit field is severely inhomogeneous at ultrahigh field due to both RF penetration and RF coil design issues. This particularly impairs image quality for sequences that use inversion pulses such as magnetization prepared rapid ... More
Victory Sign Biometric for Terrorists IdentificationFeb 26 2016Covering the face and all body parts, sometimes the only evidence to identify a person is their hand geometry, and not the whole hand- only two fingers (the index and the middle fingers) while showing the victory sign, as seen in many terrorists videos. ... More
Topological spin liquids in the ruby lattice with anisotropic Kitaev interactionsJul 31 2016Sep 11 2016The ruby lattice is a four-valent lattice interpolating between honeycomb and triangular lattices. In this work we investigate the topological spin-liquid phases of a spin Hamiltonian with Kitaev interactions on the ruby lattice using exact diagonalization ... More
Grant-free Radio Access IoT Networks: Scalability Analysis in Coexistence ScenariosNov 02 2017IoT networks with grant-free radio access, like SigFox and LoRa, offer low-cost durable communications over unlicensed band. These networks are becoming more and more popular due to the ever-increasing need for ultra durable, in terms of battery lifetime, ... More
Semileptonic form factors D to pi, K and B to pi, K from a fine latticeMar 10 2009Nov 09 2009We extract the form factors relevant for semileptonic decays of D and B mesons from a relativistic computation on a fine lattice in the quenched approximation. The lattice spacing is a=0.04 fm (corresponding to a^{-1}=4.97 GeV), which allows us to run ... More
Matrix elements of heavy-light mesons from a fine latticeJan 07 2009Results on semileptonic decay matrix elements of heavy-light mesons and charmonium spectrum and decay constant using a fine quenched lattice are presented.
Direct bulk sensitive probe of 5f symmetry in URu2Si2Aug 05 2016Sep 23 2016The second-order phase transition into a hidden order phase in URu$_2$Si$_2$ goes along with an order parameter which is still a mystery, despite 30 years of research. However, it is understood that the symmetry of the order parameter must be related ... More
A comparative study of texture attributes for characterizing subsurface structures in seismic volumesDec 19 2018In this paper, we explore how to computationally characterize subsurface geological structures presented in seismic volumes using texture attributes. For this purpose, we conduct a comparative study of typical texture attributes presented in the image ... More
On Stable Bundles of Ranks 2 and 3 on P^3Oct 06 2003We study rank 3 stable bundles E on P^3 as extensions of a line bundle B on a smooth surface S in P^3 by the direct sum of three copies of O_{P^3}(-\nu). In most cases, S (the dependency locus of three sections of E(\nu)) lies in the Noether-Lefschetz ... More
The High Frequency Radio Emission of the Galactic Center Magnetar SGR J1745-29 During a Transitional PeriodNov 28 2017The origin of the high-frequency radio emission detected from several magnetars is poorly understood. In this paper, we report the ~40 GHz properties of SGR J1745-29 as measured using Jansky Very Large Array (JVLA) and Robert C. Byrd Green Bank Telescope ... More
Systems of Cosserat--Zhilin in Newtonian MechanicsFeb 26 2016Mechanical systems of Cosserat--Zhilin are introduced as the main object of Newtonian (non--relativistic) mechanics on the base of new notions of vector calculus - sliders and screw measures (bi-measures). The differential equations of motion are derived ... More
Comparison and evaluation of digital signature schemes employed in ndn networkAug 02 2015Named Data networking ensure data integrity so that every important data has to be signed by its owner in order to send it safely inside the network. Similarly, in NDN we have to assure that none could open the data except authorized users. Since only ... More
Forensics Analysis of Xbox One Game ConsoleMar 06 2019Games console devices have been designed to be an entertainment system. However, the 8th generation games console have new features that can support criminal activities and investigators need to be aware of them. This paper highlights the forensics value ... More
Singular Graphs on which the Dihedral Group Acts Vertex TransitivelyOct 08 2018Let $\Gamma$ be a simple connect graph on a finite vertex set $V$ and let $A$ be its adjacency matrix. Then $\Gamma$ is said to be \textit{singular} if and only if $0$ is an eigenvalue of $A.$ The \textit{nullity (singularity)} of $\Gamma,$ denoted by ... More
Exact Analysis of Level-Crossing Statistics for (d+1)-Dimensional Fluctuating SurfacesAug 07 2005Nov 13 2006We carry out an exact analysis of the average frequency $\nu_{\alpha x_i}^+$ in the direction $x_i$ of positive-slope crossing of a given level $\alpha$ such that, $h({\bf x},t)-\bar{h}=\alpha$, of growing surfaces in spatial dimension $d$. Here, $h({\bf ... More
Re-thinking Enrolment in Identity Card SchemesMay 31 2011Many countries around the world have initiated national ID card programs in the last decade. These programs are considered of strategic value to governments due to its contribution in enhancing existing identity management systems. Considering the total ... More
Singular graphsJun 20 2018Let $\Gamma$ be a simple graph on a finite vertex set $V$ and let $A$ be its adjacency matrix. Then $\Gamma$ is said to be singular if and only if $0$ is an eigenvalue of $A.$ The nullity (singularity) of $\Gamma,$ denoted by ${\rm null}(\Gamma),$ is ... More
Using Periodicity to Obtain Partition CongruencesSep 12 2016Sep 14 2016In this paper, we generalize recent work of Mizuhara, Sellers, and Swisher that gives a method for establishing restricted plane partition congruences based on a bounded number of calculations. Using periodicity for partition functions, our extended technique ... More
Using Periodicity to Obtain Partition CongruencesSep 12 2016Nov 12 2016In this paper, we generalize recent work of Mizuhara, Sellers, and Swisher that gives a method for establishing restricted plane partition congruences based on a bounded number of calculations. Using periodicity for partition functions, our extended technique ... More
Quantum phase transitions out of a Z2 x Z2 topological phaseAug 06 2013Dec 12 2013We investigate the low-energy spectral properties and robustness of the topological phase of color code, which is a quantum spin model for the aim of fault-tolerant quantum computation, in the presence of a uniform magnetic field or Ising interactions, ... More
Microaneurysm Detection in Fundus Images Using a Two-step Convolutional Neural NetworksOct 14 2017Jul 08 2018Diabetic Retinopathy (DR) is a prominent cause of blindness in the world. The early treatment of DR can be conducted from detection of microaneurysms (MAs) which appears as reddish spots in retinal images. An automated microaneurysm detection can be a ... More
Microtubule Motility Analysis based on Time-Lapse Fluorescence MicroscopyMay 27 2019This paper describes an investigation into part of the mechanical mechanisms underlying the formation of mitotic spindle, the cellular machinery responsible for chromosomal separation during cell division. In normal eukaryotic cells, spindles are composed ... More
Message Passing for Analysis and Resilient Design of Self-Healing Interdependent Cyber-Physical NetworksJun 03 2016Coupling cyber and physical systems gives rise to numerous engineering challenges and opportunities. An important challenge is the contagion of failure from one system to another, that can lead to large scale cascading failures. On the other hand, self-healing ... More
Gold nanoparticles-based brachytherapy enhancement in choroidal melanoma using a full Monte Carlo modelling of human eyeJun 17 2014Jan 13 2015The effects of gold nanoparticles in 125I brachytherapy dose enhancement on choroidal Melanoma are examined using the Monte Carlo simulation technique. Usually, Monte Carlo ophthalmic brachytherapy dosimetry is performed in a water phantom. However, here, ... More
Correlated nanoscale analysis of the emission from wurtzite versus zincblende (In,Ga)As/GaAs nanowire core-shell quantum wellsMar 18 2019May 21 2019While the properties of wurtzite GaAs have been extensively studied during the past decade, little is known about the influence of the crystal polytype on ternary (In,Ga)As quantum well structures. We address this question with a unique combination of ... More
Chaotic behavior in Casimir oscillators: A case study for phase change materialsOct 04 2017Casimir forces between material surfaces at close proximity of less than 200 nm can lead to increased chaotic behavior of actuating devices depending on the strength of the Casimir interaction. We investigate these phenomena for phase change materials ... More
A Count of Palm Trees from Satellite ImageMay 27 2018In this research the number of palm trees was calculated from the satellite image programmatically, taking advantage of the accuracy of the spatial resolution of satellite image, the abilities of software recognition, and characteristics of the palm tree, ... More
Automatic Reference Models Development: A FrameworkJan 29 2014Software reuse allows the software industry to simultaneously reduce development cost and improve product quality. Reuse of early-stage artifacts has been acknowledged to be more beneficial than reuse of later-stage artifacts. In this regard, early-stage ... More
Quantum phase transition of the sub-Ohmic rotor modelOct 11 2011Nov 28 2011We investigate the behavior of an $N$-component quantum rotor coupled to a bosonic dissipative bath having a sub-Ohmic spectral density $J(\omega) \propto \omega^s$ with $s<1$. With increasing dissipation strength, this system undergoes a quantum phase ... More
On the Capacity Bounds of Undirected NetworksApr 28 2008In this work we improve on the bounds presented by Li&Li for network coding gain in the undirected case. A tightened bound for the undirected multicast problem with three terminals is derived. An interesting result shows that with fractional routing, ... More
Monte-Carlo simulations of the dissipative random transverse-field Ising chainJul 26 2013We study the influence of Ohmic dissipation on the random transverse-field Ising chain by means of large-scale Monte-Carlo simulations. To this end, we first map the Hamiltonian onto a classical Ising model with long-range $1/\tau^2$ interaction in the ... More
Optimal Resource Allocation for Mobile Edge Computing-Based Augmented Reality ApplicationsNov 28 2016Mobile edge computing enables the provision of computationally demanding Augmented Reality (AR) applications on mobile devices. AR mobile applications have inherent collaborative properties in terms of data collection in the uplink, computing at the edge, ... More
Selection Combining Scheme over Non-identically Distributed Fisher-Snedecor $\mathcal{F}$ Fading ChannelsMay 06 2019In this paper, the performance of the selection combining (SC) scheme over Fisher-Snedecor $\mathcal{F}$ fading channels with independent and non-identically distributed (i.n.i.d.) branches is analysed. The probability density function (PDF) and the moment ... More
Stochastic $φ^4-$Theory in the Strong Coupling LimitNov 15 2006The stochastic $\phi^4$-theory in $d-$dimensions dynamically develops domain wall structures within which the order parameter is not continuous. We develop a statistical theory for the $\phi^4$-theory driven with a random forcing which is white in time ... More
Semiparametric two-component mixture models under L-moments constraintsJun 28 2016We propose a structure of a semiparametric two-component mixture model when one component is parametric and the other is defined through L-moments conditions. Estimation of a two-component mixture model with an unknown component is very difficult when ... More
A Minimal Groebner Basis for the Defining Ideals of Certain Affine Monomial CurvesNov 17 2004Nov 20 2004In this article we produce Groebner bases for the defining ideal of a monomial curve that corresponds to an almost arithmetic sequence of positive integers, correcting previous work of Sengupta,(2003).
Necessary conditions for optimality for stochastic evolution equationsOct 24 2012Aug 27 2013This paper is concerned with providing the maximum principle for a control problem governed by a stochastic evolution system on a separable Hilbert space. In particular, necessary conditions for optimality for this stochastic optimal control problem are ... More
Self-injective algebras and the second Hochschild cohomology groupSep 07 2007Aug 22 2008In this paper we study the second Hochschild cohomology group ${HH}^2(\Lambda)$ of a finite dimensional algebra $\Lambda$. In particular, we determine ${HH}^2(\Lambda)$ where $\Lambda$ is a finite dimensional self-injective algebra of finite representation ... More
Observation of VHE Gamma Radiation from HESS J1834-087/W41 with the MAGIC TelescopeApr 10 2006Recently, the HESS array has reported the detection of gamma-ray emission above a few hundred GeV from eight new sources located close to the Galactic Plane. The source HESS J1834-087 is spatially coincident with SNR G23.3-0.3 (W41). Here we present MAGIC ... More
Limits on diffuse fluxes of high energy extraterrestrial neutrinos with the AMANDA-B10 detectorMar 11 2003Data from the AMANDA-B10 detector taken during the austral winter of 1997 have been searched for a diffuse flux of high energy extraterrestrial muon-neutrinos, as predicted from, e.g., the sum of all active galaxies in the universe. This search yielded ... More
An aleph-zero-categorical theory which is not G-compact and does not have AZ-enumerationsFeb 07 2006We give an example of an aleph-zero-categorical theory which is not G-compact. The countable model of this theory does not have AZ-enumerations.
On the Gauss map of quadric surfacesApr 29 2019In this paper, we study quadric surfaces in the 3-dimensional Euclidean space whose Gauss map n is of coordinate finite I-type, i.e., the position vector n satisfies the relation {\Delta}In = {\Lambda}n, where {\Delta}I is the Laplace operator with respect ... More
Anchor rings of finite type Gauss map in the Euclidean 3-spaceFeb 03 2019In this article, we continue the classification of finite type Gauss map surfaces in the Euclidean 3-space E3 with respect to the first fundamental form by studying a subclass of tubes, namely the anchor rings. We show that anchor rings are of infinite ... More
A Study of the Effect of Resolving Negation and Sentiment Analysis in Recognizing Text Entailment for ArabicJul 05 2019Recognizing the entailment relation showed that its influence to extract the semantic inferences in wide-ranging natural language processing domains (text summarization, question answering, etc.) and enhanced the results of their output. For Arabic language, ... More
On the fully commutative elements of type $\tilde C$ and faithfulness of related towersSep 03 2015Jul 15 2016We define a tower of injections of $\tilde{C}$-type Coxeter groups $W(\tilde C_{n})$ for $n\geq 1$. We define a tower of Hecke algebras and we use the faithfulness at the Coxeter level to show that this last tower is a tower of injections. Let $W^c(\tilde ... More
The Second Hochschild Cohomology Group for a Class of One-Parametric Self-Injective AlgebrasSep 10 2011Sep 13 2012In this paper we determine the second Hochschild cohomology group for a class of self-injective algebras of tame representation type namely, those which are standard one-parametric but not weakly symmetric. These were classifed up to derived equivalence ... More
Cup-length estimates for leaf-wise intersectionsFeb 17 2010May 09 2010We prove that on a restricted contact type hypersurface the number of leaf-wise intersections is bounded from below by a certain cup-length.
Image Denosing In 1/f Noise Using Level-Dependent Estimation Discrete Wavelet TransformApr 19 2019Jul 09 2019In many applications, Image de-noising and improvement represent essential processes in presence of colored noise such that in underwater. Power spectral density of the noise is changeable within a definite frequenc range, and autocorrelation noise function ... More
Non-nesting actions of Polish groups on pretreesJul 14 2006We study non-nesting actions of groups on real trees. We prove some fixed point theorems for such actions under the assumption that groups are Polish and have comeagre conjugacy classes.
Necessary and sufficient conditions of optimal control for infinite dimensional SDEsFeb 17 2012Mar 20 2012A general maximum principle (necessary and sufficient conditions) for an optimal control problem governed by a stochastic differential equation driven by an infinite dimensional martingale is established. The solution of this equation takes its values ... More