Results for "Muhammad R. A. Khandaker"

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One- and Two-Way Relay Optimization for MIMO Interference NetworksMar 27 2017This paper considers multiple-input multiple-output (MIMO) relay communication in multi-cellular (interference) systems in which MIMO source-destination pairs communicate simultaneously. It is assumed that due to severe attenuation and/or shadowing effects, ... More
Interference Exploitation in Full Duplex Communications: Trading Interference Power for Both Uplink and Downlink Power SavingsMar 30 2017This paper considers a multiuser full-duplex (FD) wireless communication system, where a FD radio base station (BS) serves multiple single-antenna half-duplex (HD) uplink and downlink users simultaneously. Unlike conventional interference mitigation approaches, ... More
Outage Analysis for SWIPT-Enabled Two-Way Cognitive Cooperative CommunicationsApr 05 2017In this paper, we study a cooperative cognitive radio network (CCRN) where the secondary user-transmitter (SU-Tx) assists bi-directional communication between a pair of primary users (PUs) following the principle of two-way relaying. In return, it gets ... More
Two-way beamforming optimization for full-duplex SWIPT systemsJun 28 2016In this paper, we investigate the problem of two-way relay beamforming optimization to maximize the achievable sum-rate of a simultaneous wireless information and power transfer (SWIPT) system with a full-duplex (FD) multiple-input multiple-output (MIMO) ... More
Two-way relay beamforming optimization for full-duplex SWIPT systemsJun 28 2016Mar 21 2017In this paper, we investigate the problem of two-way relay beamforming optimization to maximize the achievable sum-rate of a simultaneous wireless information and power transfer (SWIPT) system with a full-duplex (FD) multiple-input multiple-output (MIMO) ... More
Wireless Information and Power Transfer in Full-Duplex Communication SystemsMar 07 2016This paper considers the problem of maximizing the sum-rate for simultaneous wireless information and power transfer (SWIPT) in a full-duplex bi-directional communication system subject to energy harvesting and transmit power constraints at both nodes. ... More
Energy Harvesting Enabled MIMO Relaying through Time SwitchingApr 10 2017This letter considers simultaneous wireless information and power transfer (SWIPT) for a multiple-input multiple-output (MIMO) relay system. The relay is powered by harvesting energy from the source via time switching (TS) and utilizes the harvested energy ... More
Energy Harvesting Enabled MIMO Relaying through PSMar 30 2017This paper considers a multiple-input multiple-output (MIMO) relay system with an energy harvesting relay node. All nodes are equipped with multiple antennas, and the relay node depends on the harvested energy from the received signal to support information ... More
Constructive Interference Based Secure Precoding: A New Dimension in Physical Layer SecurityDec 27 2016Conventionally, interference and noise are treated as catastrophic elements in wireless communications. However, it has been shown recently that exploiting known interference constructively can even contribute to signal detection ability at the receiving ... More
Secure Full-Duplex Device-to-Device CommunicationSep 07 2017This paper considers full-duplex (FD) device-to-device (D2D) communications in a downlink MISO cellular system in the presence of multiple eavesdroppers. The D2D pair communicate sharing the same frequency band allocated to the cellular users (CUs). Since ... More
Truth-Telling Mechanism for Secure Two-Way Relay Communications with Energy-Harvesting RevenueMar 20 2017Mar 21 2017This paper brings the novel idea of paying the utility to the winning agents in terms of some physical entity in cooperative communications. Our setting is a secret two-way communication channel where two transmitters exchange information in the presence ... More
Secure Full-Duplex Two-Way Relaying for SWIPTSep 24 2017This letter studies bi-directional secure information exchange in a simultaneous wireless information and power transfer (SWIPT) system enabled by a full-duplex (FD) multiple-input multiple-output (MIMO) amplify-and-forward (AF) relay. The AF relay injects ... More
Joint Transmit Power and Relay Two-Way Beamforming Optimization for Energy-Harvesting Full-Duplex CommunicationsOct 12 2016This paper studies the joint optimization problem of two-way relay beamforming, the receiver power splitting (PS) ratio as well as the transmit power at the sources to maximize the achievable sum-rate of a simultaneous wireless information and power transfer ... More
Joint Transmit Power and Relay Two-Way Beamforming Optimization for Energy-Harvesting Full-Duplex CommunicationsOct 12 2016Oct 18 2016This paper studies the joint optimization problem of two-way relay beamforming, the receiver power splitting (PS) ratio as well as the transmit power at the sources to maximize the achievable sum-rate of a simultaneous wireless information and power transfer ... More
Simultaneous Wireless Information and Power Transfer in MISO Full-Duplex SystemsMar 16 2017This paper investigates a multiuser multiple-input single-output (MISO) full-duplex (FD) system for simultaneous wireless information and power transfer (SWIPT), in which a multi-antenna base station (BS) simultaneously sends wirelessly information and ... More
Learning the Wireless V2I Channels Using Deep Neural NetworksJul 10 2019For high data rate wireless communication systems, developing an efficient channel estimation approach is extremely vital for channel detection and signal recovery. With the trend of high-mobility wireless communications between vehicles and vehicles-to-infrastructure ... More
Probabilistically Robust SWIPT for Secrecy MISOME SystemsAug 30 2016This paper considers simultaneous wireless information and power transfer (SWIPT) in a multiple-input single-output (MISO) downlink system consisting of one multi-antenna transmitter, one single-antenna information receiver (IR), multiple multi-antenna ... More
Deep Neural Network Based Resource Allocation for V2X CommunicationsJun 24 2019This paper focuses on optimal transmit power allocation to maximize the overall system throughput in a vehicle-to-everything (V2X) communication system. We propose two methods for solving the power allocation problem namely the weighted minimum mean square ... More
A Speculative Study on 6GFeb 18 2019While 5G is being tested worldwide and anticipated to be rolled out gradually in 2019, researchers around the world are beginning to turn their attention to what 6G might be in 10+ years time, and there are already initiatives in various countries focusing ... More
Screening-Limited Response of NanoBiosensorsDec 02 2007Despite tremendous potential of highly sensitive electronic detection of bio-molecules by nanoscale biosensors for genomics and proteomic applications, many aspects of experimentally observed sensor response (S) are unexplained within consistent theoretical ... More
Magnetic fields in primordial accretion disksNov 04 2015Magnetic fields are considered as a vital ingredient of contemporary star formation, and may have been important during the formation of the first stars in the presence of an efficient amplification mechanism. Initial seed fields are provided via plasma ... More
A compact analytical formalism for current transients in electrochemical systemsJun 22 2011Micro and nanostructured electrodes form an integral part of a wide variety of electrochemical systems for biomolecule detection, batteries, solar cells, scanning electrochemical microscopy, etc. Given the complexity of the electrode structures, the Butler-Volmer ... More
Optimal Power Allocation by Imperfect Hardware Analysis in Untrusted Relaying NetworksSep 05 2017By taking a variety of realistic hardware imperfections into consideration, we propose an optimal power allocation (OPA) strategy to maximize the instantaneous secrecy rate of a cooperative wireless network comprised of a source, a destination and an ... More
Witnessing the birth of a supermassive protostarOct 09 2015Feb 04 2016The detection of $\rm z>6$ quasars reveals the existence of supermassive black holes of a few $\rm 10^9~M_{\odot}$. One of the potential pathways to explain their formation in the infant universe is the so-called direct collapse model which provides massive ... More
Unraveling the Role of Morphology on Organic Solar Cell PerformanceNov 03 2010Polymer based organic photovoltaic (OPV) technology offers a relatively inexpensive option for solar energy conversion provided its efficiency increases beyond the current level (6-7%) along with significant improvements in operational lifetime. The critical ... More
Short cycles in digraphs and the Caccetta-Häggkvist conjectureOct 17 2016In the theory of digraphs, the study of cycles is a subject of great importance and has given birth to a number of deep questions such as the Behzad-Chartrand-Wall conjecture (1970) and its generalization, the Caccetta-H\"{a}ggkvist conjecture (1978). ... More
Incoherent photoproduction of pseudoscalar mesons off nuclei at forward anglesAug 10 2009Recent advances in the photon tagging facilities together with the novel, high resolution fast calorimetry made possible to perform photoproduction cross section measurements of pseudoscalar mesons on nuclei with a percent level accuracy. The extraction ... More
Photoproduction of Pseudoscalar Mesons off Nuclei at Forward AnglesMar 26 2009With the advent of new photon tagging facilities and novel experimental technologies it has become possible to perform photoproduction cross section measurements of pseudoscalar mesons on nuclei with a percent level accuracy. The extraction of the radiative ... More
Analytical investigation of revival phenomena in periodically driven systemSep 30 2010We present theoretical study of revival phenomena for a wave packet initially well localized in a one-dimensional potential in the presence of an external periodic modulating field. The classical motion, revival, and super-revival time scale are derived ... More
Short cycles in digraphs and the Caccetta-Häggkvist conjectureOct 17 2016Oct 20 2016In the theory of digraphs, the study of cycles is a subject of great importance and has given birth to a number of deep questions such as the Behzad-Chartrand-Wall conjecture (1970) and its generalization, the Caccetta-H\"{a}ggkvist conjecture (1978). ... More
Geometric focusing of supercurrent in hourglass-shaped ballistic Josephson junctionsOct 10 2018The response of superconductor-normal-metal-superconductor junctions to magnetic field is complicated and non-universal because all trajectories contributing to supercurrent have a different effective area, and therefore acquire arbitrary magnetic phases. ... More
Near Horizon Extreme Magnetized Kerr GeometryNov 17 2016The conjectured magnetized Kerr/CFT correspondence states that the quantum theory of gravity in the near horizon of extreme Kerr black holes immersed by the magnetic field, Near Horizon Extreme Magnetized Kerr black holes, is holographic dual to a two-dimensional ... More
Study of Pakistan Election System as Intelligent e-ElectionMay 27 2004The proposed election system lies in ensuring that it is transparent and impartial.Thus while the electoral system may vary from country to country, It has to take into account the peculiarities of every society while at the same time incorporating remedies ... More
Statistical Interpretation of Femto-Molar DetectionJan 28 2009Over the last decade, many experiments have demonstrated that nanobiosensors based on Nanotubes and Nanowires are significantly more sensitive compared to their planar counterparts. Yet, there has been persistent gap between reports of analyte detection ... More
The geometry of homothetic covering and illuminationFeb 19 2016Jul 18 2016At a first glance, the problem of illuminating the boundary of a convex body by external light sources and the problem of covering a convex body by its smaller positive homothetic copies appear to be quite different. They are in fact two sides of the ... More
On the covering index of convex bodiesMar 10 2015Nov 11 2015Covering a convex body by its homothets is a classical notion in discrete geometry that has resulted in a number of interesting and long-standing problems. Swanepoel introduced the covering parameter of a convex body as a means of quantifying its covering ... More
The chemical evolution of self-gravitating primordial disksApr 23 2015Oct 08 2015Numerical simulations show the formation of self-gravitating primordial disks during the assembly of the first structures in the Universe, in particular during the formation of Pop.~III and supermassive stars. Their subsequent evolution is expected to ... More
Contact numbers for sphere packingsJan 02 2016Jan 22 2016In discrete geometry, the contact number of a given finite number of non-overlapping spheres was introduced as a generalization of Newton's kissing number. This notion has not only led to interesting mathematics, but has also found applications in the ... More
Intermittent fragmentation and statistical variations during gas collapse in magnetised atomic cooling haloesFeb 28 2019Observations reveal the presence of supermassive black holes (SMBH) as early as ~700 million years after the Big Bang. Their formation path is still subject to current debate. We explore the influence of magnetic fields, which are strongly amplified via ... More
UV regulated star formation in high-redshift galaxiesJul 05 2019The first galaxies forming a few hundred million years after the Big Bang are the key drivers of cosmic evolution and ideal laboratories to study theories of galaxies formation. Their radiative feedback regulates star formation not only in nearby but ... More
Intermittent fragmentation and statistical variations during gas collapse in magnetised atomic cooling haloesFeb 28 2019Jun 04 2019Observations reveal the presence of supermassive black holes (SMBH) as early as ~700 million years after the Big Bang. Their formation path is still subject to current debate. We explore the influence of magnetic fields, which are strongly amplified via ... More
A Capacity Improvement Method for CDMA based Mesh Networks in SUI Multipath Fading ChannelsSep 09 2011Dec 11 2012Code Division Multiple Access (CDMA) is the most promising candidate for wideband data access. This is due to the advantage of soft limit on the number of active mobile devices. Many wireless mesh systems impose an upper bound on the BER performance which ... More
Interval-valued fuzzy graphsApr 29 2012We define the Cartesian product, composition, union and join on interval-valued fuzzy graphs and investigate some of their properties. We also introduce the notion of interval-valued fuzzy complete graphs and present some properties of self complementary ... More
Formation of supermassive black hole seedsMay 24 2016Aug 22 2016The detection of quasars at $z>6$ unveils the presence of supermassive black holes (BHs) of a few billion solar masses. The rapid formation process of these extreme objects remains a fascinating and open issue. Such discovery implies that seed black holes ... More
Potential of a moving test charge in a dusty plasma in the presence of grain size distribution and grain charging dynamicsOct 22 2004It is well known that the form of grain size distribution strongly influences the linear dielectric response of a dusty plasma. In previous results [IEEE Trans. Plasma Sci. 29, 182 (2001)], it was shown that for a class of size distributions, there is ... More
In-Line Post-Process Scribing for Reducing Cell to Module Efficiency Gap in Monolithic Thin Film PhotovoltaicsJul 04 2013The gap between cell and module efficiency is a major challenge for all photovoltaic (PV) technologies. For monolithic thin film PV modules, a significant fraction of this gap has been attributed to parasitic shunts, and other defects, distributed across ... More
Search Capability for $η\to ν_{e,τ}\barν_{e,τ}$ Decays in Cubic Kilometer Neutrino DetectorsFeb 19 2009May 19 2010We investigate the discovery potential of cubic kilometer neutrino observatories such as IceCube to set stringent limits on the forbidden decays $\eta\to\nu_e\bar\nu_e$ and $\eta\to\nu_{\tau}\bar\nu_{\tau}$. The signatures for these decays are cascade ... More
The impact of ionizing radiation on the formation of a supermassive star in the early UniverseNov 25 2016A massive primordial halo near an intensely star forming galaxy may collapse into a supermassive star (SMS) and leave a massive black hole seed of about $10^5~M_{sun}$. To investigate the impact of ionizing radiation on the formation of an SMS from a ... More
The impact of ionizing radiation on the formation of a supermassive star in the early UniverseNov 25 2016Jul 15 2017A massive primordial halo near an intensely star-forming galaxy may collapse into a supermassive star (SMS) and leave a massive black hole seed of about $10^5~M_{\odot}$. To investigate the impact of ionizing radiation on the formation of an SMS from ... More
Geometrical design of thin film PV modules for improved shade tolerance and performanceMar 19 2013Partial shading in photovoltaic modules is an important reliability and performance concern for all photovoltaic technologies. In this paper, we show how cell geometry can be used as a design variable for improved performance and resilience towards partial ... More
An Efficient Hybrid Power Control Algorithm for Capacity Improvement of CDMA-based Fixed Wireless ApplicationsSep 08 2011Dec 11 2012In Fixed Wireless Applications (FWA), the Code Division Multiple Access (CDMA) is the most promising candidate for wideband data access. The reason is the soft limit on the number of active mobile devices. Many Fixed Wireless Applications impose an upper ... More
Enumeration of Bi-commutative AG-groupoidsMar 21 2014Feb 10 2015A groupoid satisfying the left invertive law: $ab\cdot c=cb\cdot a$ is called an AG-groupoid and is a generalization of commutative semigroups. We consider the concept of bi-commutativity in AG-groupoids and thus introduce left commutative AG-groupoids, ... More
Photoassociative ionization of Na inside a storage ringJul 31 2009Dec 25 2011Motivated by recent interest in low dimensional arrays of atoms, we experimentally investigated the way cold collisional processes are affected by the geometry of the considered atomic sample. More specifically, we studied the case of photoassociative ... More
Wireless Authentication System for Barcode Scanning Using Infrared Communication TechniqueOct 03 2016This paper presents the verified methodology for wireless authentication system using infrared barcode based scanner. An alternate approach of scanning a barcode using an infrared communication is implemented here, comprises of a card on which a barcode ... More
Left Transitive AG-groupoidsFeb 21 2014Nov 15 2014An AG-groupoid is an algebraic structure that satisfies the left invertive law: (ab)c =(cb)a. We prove that the class of left transitive AG-groupoids (AG-groupoids satisfying the identity, ab.ac = bc) coincides with the class of T2-AG-groupoids. We also ... More
Double emulsion drop evaporation and resurfacing of daughter dropletOct 24 2018In this study, we present experimental and theoretical analyses of double emulsion drop evaporation. After the apparent completion of evaporation of the inner phase of a double emulsion drop, surprisingly, a resurfacing of a daughter droplet is observed. ... More
Analysis of the Energy Spectra of Ground States of Deformed Nuclei in rare-earth regionMay 28 2014The 62Sm, 64Gd, 64Dy, 70Y b, 72Hf and 74W nuclei are classified as deformed nuclei. Low-lying bands are one of the most fundamental excitation modes in the energy spectra of deformed nuclei. In this paper a theoretical analysis of the experimental data ... More
Recent progress in parallel fabrication of individual single walled carbon nanotube devicesMay 03 2014Single walled carbon nanotubes (SWNTs) have attracted immense research interest because of their remarkable physical and electronic properties. In particular, electronic devices fabricated using individual SWNT have shown outstanding device performance ... More
Positivity of sums and integrals for higher order nabla-convex and completely monotonic functionsOct 13 2017We extend the definitions of $\nabla-$convex and completely monotonic functions for two variables. Some general identities of Popoviciu type for sum $\sum \sum p_{ij} f(y_i, z_j)$ and integrals $\int P(y)f(y) dy$, $\int \int P(y,z) f(y,z) dy \, dz$ are ... More
Inverse solutions for a second-grade fluid for porous medium channel and Hall current effectsSep 11 2006Assuming certain forms of the stream function inverse solutions of an incompressible viscoelastic fluid for a porous medium channel in the presence of Hall currents are obtained. Expressions for streamlines, velocity components and pressure fields are ... More
Seamless Long Term Learning in Agile Teams for Sustainable LeadershipFeb 12 2012Seamless and continuous support for long term organizational learning needs is essential for long lasting progress of the organization. Agile process model provides an excellent opportunity to cater that specific problem and also helps in motivation, ... More
Uncertainty in the Fluctuations of the Price of StocksJun 11 2007We report on a study of the Tehran Price Index (TEPIX) from 2001 to 2006 as an emerging market that has been affected by several political crises during the recent years, and analyze the non-Gaussian probability density function (PDF) of the log returns ... More
Fundamentals of PV Efficiency Interpreted by a Two-Level ModelMay 29 2012Sep 13 2012Elementary physics of photovoltaic energy conversion in a two-level atomic PV is considered. We explain the conditions for which the Carnot efficiency is reached and how it can be exceeded! The loss mechanisms - thermalization, angle entropy, and below-bandgap ... More
Optimal band gap for improved thermoelectric performance of two-dimensional Dirac materialsJan 13 2019Jun 24 2019Thermoelectric properties of two-dimensional (2D) Dirac materials are calculated within linearized Boltzmann transport theory and relaxation time approximation. We find that the gapless 2D Dirac material exhibits poorer thermoelectric performance than ... More
Infinite dimensional optimistic optimisation with applications on physical systemsNov 17 2016This paper presents a novel numerical optimisation method for infinite dimensional optimisation. The functional optimisation makes minimal assumptions about the functional and without any specific knowledge on the derivative of the functional. The algorithm ... More
On contact graphs of totally separable domainsMar 24 2017Mar 28 2017Contact graphs have emerged as an important tool in the study of translative packings of convex bodies. The contact number of a packing of translates of a convex body is the number of edges in the contact graph of the packing, while the Hadwiger number ... More
About Cantor Works on Trigonometric SeriesMar 23 2015This paper is an investigation into Cantor works about representing a function with trigonometric series, and his proofs about its uniqueness. These works are important, because they cause invention of point-set topology, and foundation of basic ideas ... More
A Markov Chain Approach for Defining the Fundamental Efficiency Limits of Classical and Bifacial Multi-junction Tandem Solar CellsMay 30 2016Bifacial tandem cells promise to reduce three fundamental losses (above-bandgap, below bandgap, and the uncollected light between panels) inherent in classical single junction PV systems. The successive filtering of light through the bandgap cascade, ... More
Equilibria of a charged artificial satellite subject to gravitational and Lorentz torquesMar 18 2014Attitude Dynamics of a rigid artificial satellite subject to gravity gradient and Lorentz torques in a circular orbit is considered. Lorentz torque is developed on the basis of the electrodynamic effects of the Lorentz force acting on the charged satellite's ... More
Diversity-Inducing Policy Gradient: Using Maximum Mean Discrepancy to Find a Set of Diverse PoliciesMay 31 2019Standard reinforcement learning methods aim to master one way of solving a task whereas there may exist multiple near-optimal policies. Being able to identify this collection of near-optimal policies can allow a domain expert to efficiently explore the ... More
Attitude dynamics and control of spacecraft using geomagnetic Lorentz forceMay 17 2014The attitude stabilization of a charged rigid spacecraft in Low Earth Orbit (LEO) using torques due to Lorentz force in pitch and roll directions is considered. A spacecraft that generates an electrostatic charge on its surface in the Earth magnetic field ... More
Deep Learning based Computer-Aided Diagnosis Systems for Diabetic Retinopathy: A SurveyNov 03 2018The outstanding performance of deep learning in various computer vision tasks motivated its application for medical image analysis, in particular, retinal fundus image analysis. It has been applied to a variety of tasks including diagnosis, detection ... More
Performance and Reliability Implications of Two Dimensional Shading in Monolithic Thin Film Photovoltaic ModulesMar 18 2013We analyze the problem of partial shading in monolithically integrated thin film photovoltaic (TFPV) modules, and explore how the shape and size of the shadows dictate their performance and reliability. We focus on the aspects of shading problem unique ... More
Applications of Various Space-time Transformations to Determine Radar Signal Distortion Caused by a Moving Target Having Constant Velocity and AccelerationJun 14 2018The effects of target motion on the distortion of radar signals are investigated using five transformations, namely, Hsu, Lorentz, Galilean, Reference, and Classical transformation equations. Hsu transformation is used as a primary transformation since ... More
Holographic superconductors in the AdS black hole with a magnetic chargeOct 03 2012Nov 17 2012In this work we study the analytical properties of a 2+1 dimensional magnetically charged holographic superconductor in $AdS_4$. We obtain the critical chemical potential $\mu_c$ analytically, using the Sturm-Liouville variational approach. Also, the ... More
From D2D to Ds2D: Prolonging the Battery Life of Mobile Devices via Ds2D CommunicationsMar 31 2017Emerging device centric systems (DCS) such as device-to-device (D2D) communications are considered as a standard part of future mobile networks, where operators/consumers involve the devices in direct communication to improve the cellular system throughput, ... More
All-Electric Quantum Point Contact Spin ValveJan 15 2009May 29 2009This paper has been withdrawn by the author because in the main text some discussion parts were inadvertently added by mistake.
Comparative Study on DFD to UML Diagrams TransformationsFeb 21 2011Most of legacy systems use nowadays were modeled and documented using structured approach. Expansion of these systems in terms of functionality and maintainability requires shift towards object-oriented documentation and design, which has been widely ... More
Inferring Room Semantics Using Acoustic MonitoringOct 24 2017Having knowledge of the environmental context of the user i.e. the knowledge of the users' indoor location and the semantics of their environment, can facilitate the development of many of location-aware applications. In this paper, we propose an acoustic ... More
On Physical Realizability of Nonlinear Quantum Stochastic Differential EquationsDec 23 2016Feb 23 2018In this article we study physical realizability for a class of nonlinear quantum stochastic differential equations (QSDEs). Physical realizability is a property in which a QSDE corresponds to the dynamics of an open quantum system. We derive a sufficient ... More
Photoluminescence quenching in gold - MoS2 hybrid nanoflakesApr 22 2014Jun 24 2014Achieving tunability of two dimensional (2D) transition metal dichalcogenides (TMDs) functions calls for the introduction of hybrid 2D materials by means of localized interactions with zero dimensional (0D) materials. A metal-semiconductor interface, ... More
Inference in Probabilistic Logic Programs with Continuous Random VariablesDec 12 2011Oct 08 2012Probabilistic Logic Programming (PLP), exemplified by Sato and Kameya's PRISM, Poole's ICL, Raedt et al's ProbLog and Vennekens et al's LPAD, is aimed at combining statistical and logical knowledge representation and inference. A key characteristic of ... More
A Quantum Extended Kalman FilterMar 06 2016A stochastic filter uses a series of measurements over time to produce estimates of unknown variables based on a dynamic model. For a quantum system, such an algorithm is provided by a quantum filter, which is also known as a stochastic master equation ... More
Clustering Gene Expression Time Series with Coregionalization: Speed propagation of ALSFeb 08 2018Clustering of gene expression time series gives insight into which genes may be coregulated, allowing us to discern the activity of pathways in a given microarray experiment. Of particular interest is how a given group of genes varies with different model ... More
Clustering Gene Expression Time Series with Coregionalization: Speed propagation of ALSFeb 08 2018Feb 12 2018Clustering of gene expression time series gives insight into which genes may be coregulated, allowing us to discern the activity of pathways in a given microarray experiment. Of particular interest is how a given group of genes varies with different model ... More
Behavioral Modeling for Churn Prediction: Early Indicators and Accurate Predictors of Custom Defection and LoyaltyDec 20 2015Churn prediction, or the task of identifying customers who are likely to discontinue use of a service, is an important and lucrative concern of firms in many different industries. As these firms collect an increasing amount of large-scale, heterogeneous ... More
Brane Webs and Random ProcessesSep 21 2015We study $(p,q)$ 5-brane webs dual to certain $N$ M5-brane configurations and show that the partition function of these brane webs gives rise to cylindric Schur process with period $N$. This generalizes the previously studied case of period $1$. We also ... More
Parameter Learning in PRISM Programs with Continuous Random VariablesMar 19 2012Probabilistic Logic Programming (PLP), exemplified by Sato and Kameya's PRISM, Poole's ICL, De Raedt et al's ProbLog and Vennekens et al's LPAD, combines statistical and logical knowledge representation and inference. Inference in these languages is based ... More
U-PoT: A Honeypot Framework for UPnP-Based IoT DevicesDec 13 2018The ubiquitous nature of the IoT devices has brought serious security implications to its users. A lot of consumer IoT devices have little to no security implementation at all, thus risking user's privacy and making them target of mass cyber-attacks. ... More
Quantum filtering for multiple diffusive and Poissonian measurementsMar 17 2015We provide a rigorous derivation of a quantum filter for the case of multiple measurements being made on a quantum system. We consider a class of measurement processes which are functions of bosonic field operators, including combinations of diffusive ... More
Lyapunov Stability Analysis for Invariant States of Quantum SystemsJul 24 2017Jan 26 2018In this article, we propose a Lyapunov stability approach to analyze the convergence of the density operator of a quantum system. In contrast to many previously studied convergence analysis methods for invariant density operators which use weak convergence, ... More
Combining Lexical Features and a Supervised Learning Approach for Arabic Sentiment AnalysisOct 23 2017The importance of building sentiment analysis tools for Arabic social media has been recognized during the past couple of years, especially with the rapid increase in the number of Arabic social media users. One of the main difficulties in tackling this ... More
Measurements of polarized photo-pion production on longitudinally polarized HD and Implications for Convergence of the GDH IntegralAug 15 2008We report new measurements of inclusive pion production from frozen-spin HD for polarized photon beams covering the Delta(1232) resonance. These provide data simultaneously on both H and D with nearly complete angular distributions of the spin-difference ... More
Decoherence Free Neutron InterferometryFeb 18 2016Perfect single-crystal neutron interferometers are adversely sensitive to environmental disturbances, particularly mechanical vibrations. The sensitivity to vibrations results from the slow velocity of thermal neutrons and the long measurement time that ... More
A Meshless method of lines for the numerical solution of Coupled Drinfeld's-Sokolov-Wilson SystemSep 07 2010This paper applies meshless method of lines, which uses radial basis functions (RBFs) as a spatial collocation scheme to solve the Coupled Drinfeld's-Sokolov-Wilson System. Runge-Kutta method is used for time integration of the system of ODEs obtained ... More
A note on some perfect fluid Kantowski-Sachs and Bianchi type III space-times and their conformal vector fields in f(R) theory of gravityMar 03 2019The purpose of this paper is to find conformal vector fields of some perfect fluid Kantowski-Sachs and Bianchi type III space-times in the f(R) theory of gravity using direct integration technique. In this study there exists only eight cases. Studying ... More
Signature-based Non-orthogonal Multiple Access (S-NOMA) for Massive Machine-Type Communications in 5GAug 22 2018The problem of providing massive connectivity in Internet-of-Things (IoT) with a limited number of available resources motivates the non-orthogonal multiple access (NOMA) solutions. In this article, we provide a comprehensive review of the signature-based ... More
Early growth of high redshift black holesJan 23 2018Understanding the growth of high redshift massive black holes (MBHs) is a problem of great astrophysical interest. The most luminous quasars at $z>6$ are frequently observed but they represent only the tip of the iceberg as the majority of the low luminosity ... More
Flux compactifications in Einstein-Born-Infeld theoriesJul 14 2015We investigate the flux compactification mechanism in simple toy models of Einstein-Born-Infeld theories. These are the direct generalizations of the Einstein-Maxwell flux compactifications that recently gained fame as a toy model for tunneling in the ... More
Early growth of typical high redshift black holes seeded by direct collapseJan 23 2018Jul 10 2018Understanding the growth of high redshift massive black holes (MBHs) is a problem of great astrophysical interest. The most luminous quasars at $z>6$ are frequently observed but they represent only the tip of the iceberg as the majority of the low luminosity ... More