Now showing items 21-31 of 31

    • Multiperson tracking with a network of ultrawideband radar sensors based on gaussian mixture PHD filters 

      Gulmezoglu, B.; Guldogan, M. B.; Gezici, Sinan (Institute of Electrical and Electronics Engineers Inc., 2015)
      In this paper, we investigate the use of Gaussian mixture probability hypothesis density filters for multiple person tracking using ultrawideband (UWB) radar sensors in an indoor environment. An experimental setup consisting ...
    • Novel high-K inverse silver oxide phases of SiO2, GeO2, SnO2, and their alloys 

      Sevik, C.; Bulutay, C. (Elsevier, 2006)
      The recently reported inverse silver oxide phase of SiO2 possesses a high dielectric constant as well as lattice constant compatibility to Si. We explore the closely related oxides, GeO2, SnO2 with the same inverse silver ...
    • Optimum power randomization for the minimization of outage probability 

      Dulek, B.; Vanli, N. D.; Gezici, Sinan; Varshney P. K. (IEEE, 2013)
      The optimum power randomization problem is studied to minimize outage probability in flat block-fading Gaussian channels under an average transmit power constraint and in the presence of channel distribution information ...
    • Protein folding rates correlate with heterogeneity of folding mechanism 

      Öztop, B.; Ejtehadi, M. R.; Plotkin, S. S. (American Physical Society, 2004)
      The folding rates of protein were shown to correlate with the degree of heterogeneity in the formation of native contacts. It was shown that both experimental rates and simulated free energy barriers for 2-state proteins ...
    • Quantum transport through one-dimensional aluminum wires 

      Batra, I. P.; Sen, P.; Çıracı, Salim (American Vacuum Society, 2002)
      Quantum conductance in narrow channels has been well understood by using the two-dimensional electron gas, a model system which has been realized in semiconductor heterojunctions. An essential property of this electron ...
    • Robust adaptive filtering algorithms for α-stable random processes 

      Aydin, G.; Arıkan, Orhan; Çetin, A. Enis (Institute of Electrical and Electronics Engineers, 1999-02)
      A new class of algorithms based on the fractional lower order statistics is proposed for finite-impulse response adaptive filtering in the presence of α-stable processes. It is shown that the normalized least mean p-norm ...
    • Theoretical analysis of poly(difluoroacetylene) PDFA 

      Salzner, U. (Elsevier, 2003)
      Due to the π-donating ability of fluorine, fluorosubstitution has a remarkable effect on the band structure of polyacetylene (PA). Valence and conduction band edges decrease in energy, leading to narrower valence and wider ...
    • Theoretical investigation of excited states of oligothiophene anions 

      Alkan, F.; Salzner, U. (2008)
      Electron-hole symmetry upon p- and n-doping of conducting organic polymers is rationalized with Hückel theory by the presence of symmetrically located intragap states. Since density functional theory (DFT) predicts very ...
    • A theoretical study on silicon and III-V compound nanotubes 

      Durgun, Engin; Çiraci, S. (2005)
      In this paper we present a theoretical study on single-wall silicon and III-V compound nanotubes. First principles plane wave calculations within density functional theory are used to predict energetics and electronic ...
    • Uncertainty and dissipation 

      Carcaterra, A.; Akay, Adnan (Katholieke Universiteit Leuven, 2012-09)
      This paper discusses the question of the energy confinement in mechanical structures in the light of the uncertainties affecting the natural frequencies of the system. More precisely, recent studies have shown that energy ...
    • Upper bounds on position error of a single location estimate in wireless sensor networks 

      Gholami, M. R.; Ström, E. G.; Wymeersch, H.; Gezici, Sinan (Hindawi Publishing Corporation, 2014)
      This paper studies upper bounds on the position error for a single estimate of an unknown target node position based on distance estimates in wireless sensor networks. In this study, we investigate a number of approaches ...