Browsing by Keywords "Probability density function"
Now showing items 120 of 32

Accurate method for obtaining band gaps in conducting polymers using a DFT/hybrid approach
(American Chemical Society, 1998)DFT calculations on a series of oligomers have been used to estimate band gaps, ionization potentials, electron affinities, and bandwidths for polyacetylene, polythiophene, polypyrrole, polythiazole, and a thiophene  ... 
Adaptive filtering for nongaussian stable processes
(IEEE, 1994)A large class of physical phenomenon observed in practice exhibit nonGaussian behavior. In this letter, astable distributions, which have heavier tails than Gaussian distribution, are considered to model nonGaussian ... 
Average fisher information optimization for quantized measurements using additive independent noise
(IEEE, 2010)Adding noise to nonlinear systems can enhance their performance. Additive noise benefits are observed also in parameter estimation problems based on quantized observations. In this study, the purpose is to find the optimal ... 
Bessel functionsbased reconstruction of nonuniformly sampled diffraction fields
(IEEE, 2007)A discrete computational model for the diffraction process is essential in forward problems related to holographic TV. The model must be as general as possible, since the shape of the displayed objects does not bear any ... 
Çokyollu ortamda çapraz belirsizlik işleviyön bulma tekniğinin başarım analizi
(IEEE, 200804)Bu bildiride, Çapraz Belirsizlik İşleviYön Bulma (CAFDF) tekniğinin çokyollu ortamlardaki sinyallerin zaman gecikmesi, Doppler kayması, geliş yönü(GY) ve genlik kestirimindeki başarımı ile yiiksek çözünürlüklü algoritmalar ... 
Density functional theory investigation of substituent effects on building blocks of conducting polymers
(Elsevier, 1999)Substituted heterocyclic dimers were calculated employing density functional theory (DFT) and analyzed with the natural bond orbits method (NBO). Substitution in 3 and 4positions leads to parallel shifting of HOMO and ... 
Does the donoracceptor concept work for designing synthetic metals? 1. theoretical investigation of poly(3cyano3′hydroxybithiophene)
(American Chemical Society, 2002)Homo and copolymers of hydroxythiophene and cyanothiophene have been investigated by employing density functional theory with the aim of determining the effect of donoracceptor substitution on the electronic structure. ... 
Does the donoracceptor concept work for designing synthetic metals? 2. theoretical investigation of copolymers of 4(dicyanomethylene)4Hcyclopenta[2, 1b: 3, 4b′]dithiophene and 3, 4(ethylenedioxy)thiophene
(American Chemical Society, 2002)Density functional theory (DFT) calculations were performed on oligomers of 3,4(ethylenedioxy)thiophene (EDOT), 4(dicyanomethylene)4Hcyclopenta[2,1b:3,4b′]dithiophene (CDM), and cooligomers (CDM/ EDOT). Oligomer ... 
Dynamical phase transitions in totally asymmetric simple exclusion processes with two types of particles under periodically driven boundary conditions
(American Physical Society, 2016)Driven diffusive systems have provided simple models for nonequilibrium systems with nontrivial structures. Steadystate behavior of these systems with constant boundary conditions have been studied extensively. Comparatively ... 
Economic design of EWMA control charts based on loss function
(Elsevier, 2009)For monitoring the stability of a process, various control charts based on exponentially weighted moving average (EWMA) statistics have been proposed in the literature. We study the economic design of EWMAbased mean and ... 
Electronic and magnetic properties of zinc blende halfmetal superlattices
(A I P Publishing LLC, 2004)Zinc blende halfmetallic compounds such as CrAs, with large magnetic moments and high Curie temperatures, are promising materials for spintronic applications. We explore layered materials, consisting of alternating ... 
Estimating distributions varying in time in a universal manner
(IEEE, 2017)We investigate the estimation of distributions with timevarying parameters. We introduce an algorithm that achieves the optimal negative likelihood performance against the true probability distribution. We achieve this ... 
Finite temperature studies of Te adsorption on Si(0 0 1)
(Elsevier, 2002)We perform first principles density functional calculations to investigate the adsorption of Te on the Si(0 0 1) surface from low coverage up to a monolayer coverage. At low coverage, a Te atom is adsorbed on top of the ... 
Free riding in peertopeer networks
(Institute of Electrical and Electronics Engineers, 2009)Free riding in peertopeer (P2P) networks poses a serious threat to their proper operation. Here, the authors present a variety of approaches developed to overcome this problem. They introduce several unique aspects of ... 
High conducting nanowires obtained from uniform titanium covered carbon nanotubes
(2005)We have shown that Ti atoms can form continuous coating of carbon nanotubes at different amount of coverage. The circular cross section changes to a squarelike form, and the semiconducting tube becomes ferromagnetic metal ... 
Input sequence estimation and blind channel identification in HF communication
(IEEE, 2000)A new algorithm is proposed for reliable communication over HF tropospheric links in the presence of rapid channel variations. In the proposed approach, using fractionally space channel outputs, sequential estimation of ... 
Investigation of charge carriers in doped thiophene oligomers through theoretical modeling of their UV/Vis spectra
(2008)The nature of the charge carriers in conducting organic polymers (COPs) is a long standing problem. Polythiophene is one of the prototypes of COPs and intensively studied. Because doping leads to changes in UV/vis spectra ... 
Large deviations of probability rank
(IEEE, 2000)Consider a pair of random variables (X,Y) with distribution P. The probability rank function is defined so that G(xy) = 1 for the most probable outcome x conditional on Y = y, G(xy) = 2 for the second most probable ... 
Lattice dynamics and elastic properties of lanthanum monopnictides
(2008)In this study, first principles calculation results of the second order elastic constants and lattice dynamics of two lanthanum monopnictides, LaN and LaBi, which crystallize in rocksalt structure (B1 phase), are presented. ... 
Meanshift tracking of moving objects using multidimensional histograms
(Society of PhotoOptical Instrumentation Engineers (SPIE), 200404)In this paper, a moving object tracking algorithm for infrared image sequences is presented. The tracking algorithm is based on the meanshift tracking method which is based on comparing the histograms of moving objects ...