Now showing items 2213-2232 of 24181

    • Balancing straight and U-Type assembly lines with stochastic process times 

      Şekerci, Halil (Bilkent University, 2003)
      In this thesis, we study the problem of assembly line balancing with stochastic task process times. The research considers both the well-known straight line balancing problem and U-line balancing problem where the line ...
    • Balancing supply and demand under bilateral constraints 

      Bochet, O.; İlkılıç, R.; Moulin, H.; Sethuraman, J. (Econometric Society, 2012)
      In a moneyless market, a nondisposable homogeneous commodity is reallocated between agents with single-peaked preferences. Agents are either suppliers or demanders. Transfers between a supplier and a demander are feasible ...
    • Balkans minorities and their effect upon Balkan security 

      Çağaptay, Soner (Bilkent University, 1995)
      With the advent of a bloody war in ex-Yugoslavia which has by now claimed hundreds of thousands of lives, the Balkans has once again become a focus of interest. Many have concentrated on the study of religion, nationalisms ...
    • Ballistic transport and tunneling in small systems 

      Tekman, A Erkan (Bilkent University, 1990)
      Ballistic transport and tunneling of electrons in mesoscopic systems have become one of the most important subjects of condensed matter physics. The quantum point contacts and scanning tunneling microscope form the basic ...
    • Ballistic transport through a quantum point contact: elastic scattering by impurities 

      Tekman, E.; Çıracı, Salim (American Physical Society, 1990)
      The effects of elastic scattering due to impurities in a quasi-one-dimensional constriction are investigated with an exact calculation of the conductance. It is found that the quantization of conductance is distorted owing ...
    • Balmumu heykelciliği ve balmumu heykelciliğinin Türkiye serüveni 

      Uzunok, Işıl; Ulu, Burak; Karakaya, Irmak; İncidelen, Haluk; Akbina, Ebubekir (Bilkent University, 2015)
    • Balıkesir Havran Ovası'ndaki zeytin yetiştiriciliği 

      Keleş, Ahmet Faruk; Akçalı, Ayşenur; Alagözlü, Begüm; Karaytuğ, Deniz; Eliçelik, Mert Ali (Bilkent University, 2020)
      Bu makale, Havran Ovası'ndaki zeytin yetiştiriciliğini bu bölgedeki zeytinin kalitesinin zamanla neden değiştiğini anlatmaktadır. Zeytin ağaçlarının yetiştirildiği bölgelerde, bu ağaçlara zeytin sinekleri gelir ve bu ...
    • Balıkesir SEKA Kağıt Fabrikası 

      Beşel, Berat; Yener, Kaan; Çelikten, Burak Uraz; Mermer, Taha; Demiray, Tuna (Bilkent University, 2018)
      Bu araştırma Balıkesir SEKA Kâğıt Fabrikası yılları arasında açılışını, kapatılmasını ve tekrar modernize edilmesini konu almaktadır. 1972-1981 yılları arasında kurulan ve 1998’e kadar faaliyetlerine devam eden ve daha ...
    • Band alignment issues in metal/dielectric stacks: a combined photoemission and inverse photoemission study of the HfO 2/Pt and HfO 2/Hf systems 

      Sayan, S.; Bartynski, R.A.; Robertson J.; Suehle, J. S.; Vogel, E.; Nguyen, N. V.; Ehrstein, J.; Kopanski, J. J.; Süzer, Şefik; Holl, M. B.; Garfunkel, E. (Electrochemical Society, 2004)
      We have studied the HfO 2/Hf and HfO 2/Pt systems by photoemission and inverse photoemission spectroscopies. It is found that the "effective workfunction" of metals in multilayer structures are different than their vacuum ...
    • Band alignment issues related to HfO2/SiO2/p-Si gate stacks 

      Sayan, S.; Emge, T.; Garfunkel, E.; Zhao, X.; Wielunski, L.; Bartynski, R. A.; Vanderbilt, D.; Suehle, J. S.; Süzer, Şefik; Banaszak Holl, M. (American Institute of Physics, 2004-12-15)
      The valence and conduction band densities of states for the HfO2/SiO2/Si structure are determined by soft x-ray photoemission and inverse photoemission. First principles calculations are used to help in assigning valence ...
    • Band gap and optical transmission in the Fibonacci type one-dimensional A5B6C7 based photonic crystals 

      Simsek S.; Koc, H.; Palaz S.; Oltulu, O.; Mamedov, A. M.; Özbay, Ekmel (Wiley-VCH Verlag, 2015)
      In this work, we present an investigation of the optical properties and band structure calculations for the photonic crystal structures (PCs) based on one-dimensional (1D) photonic crystal. Here we use 1D A5B6C7(A:Sb; ...
    • Band gap structure of elliptic rods in water for a 2D phononic crystal 

      Oltulu, O.; Mamedov, A. M.; Özbay, Ekmel (Springer Verlag, 2017)
      The propagation of acoustic waves in two-dimensional sonic crystals (SC) is studied theoretically. Effects of elliptical rod orientations on the acoustic band gaps in periodic arrays of rigid solid rods embedded in a polar ...
    • A band selecting UHF class-AB GaN power amplifier with 40 dBm output power 

      Alemdar, Sinan (Bilkent University, 2013)
      Ultra High Frequency (UHF) band is used for GSM communication, satellite systems, television broadcast, frequency hopping radios, software de ned radios using advanced digital modulations. Each and every application would ...
    • Band Structure and Optical Properties of Kesterite Type Compounds: First principle calculations 

      Palaz S.; Unver H.; Ugur G.; Mamedov, Amirullah; Özbay, Ekmel (Institute of Physics Publishing, 2017)
      In present work, our research is mainly focused on the electronic structures, optical and magnetic properties of Cu2FeSnZ4 (Z = S, Se) compounds by using ab initio calculations within the generalized gradient approximation ...
    • Band Structure of Phononic Crystal Consist of Hollow Aluminum Cylinders in Different Media; Finite Element Analysis 

      Özer, Z.; Demir, M.; Mamedov, Amirullah M.; Özbay, Ekmel (IOP, 2019)
      In this study, we investigated band structure of a 2D Phononic Crystal (PnC) which was consist of hollow aluminum cylinders in different media. To validate the finite element predictions, we made a square lattice PnC ...
    • Band-Bending at buried SiO2/Si interface as probed by XPS 

      Çopuroğlu, M.; Sezen, H.; Opila, R. L.; Süzer, Şefik (American Chemical Society, 2013)
      X-ray photoelectron spectroscopy is used to probe the photoinduced shifts in the binding energies of Si2p, O1s, and C1s of the SiO2/Si interfaces of a number of samples having oxide and/or thin organic layers on top of p- ...
    • Band-dropping via coupled photonic crystal waveguides 

      Bayındır, Mehmet; Özbay, Ekmel (Optical Society of American (OSA), 2002)
      We observe the dropping of electromagnetic waves having a specific frequency or a certain frequency band in two-dimensional dielectric photonic crystals. The single frequency is dropped via cavity-waveguide coupling. ...
    • Band-gap renormalization in quantum wire systems: dynamical correlations and multi-subband effects 

      Güven, K.; Tanatar, Bilal; Bennett, C. R. (Institute of Physics Publishing, 2000)
      We study the band-gap renormalization m a model semiconductor quantum wire due to the exchange-correlation effects among the charge carriers. We construct a two-subband model for the quantum wire, and employ the GW-approximation ...
    • Band-gap renormalization in quantum wires 

      Güven, Kaan; Bennett, C.R.; Tanatar, Bilal (TÜBİTAK, 1999)
      Improved techniques in semiconductor fabrication increased the interest in quantum wire structures, because of their opto-electronic device application possibilities. Many-body interactions among the electrons and holes ...
    • Band-gap renormalization in quasi-one-dimensional electron-hole systems 

      Tanatar, Bilal (Institute of Physics Publishing Ltd, 1996)
      We study the band-gap renormalization (BGR) in semiconductor quantum wires. Assuming an electron-hole system in quasi-equilibrium, we employ the random-phase approximation (RPA) and beyond (e.g., local-field corrections) ...