Now showing items 2988-3007 of 5536

    • The long-term effects of action research as a professional developmental strategy 

      Özkan, Öznur (Bilkent University, 2011)
      There is considerable emphasis on teachers’ professional development through action research in the literature. However, the long-term effects of action research as a professional developmental strategy has not been ...
    • Longitudinal analysis of search engine query logs - temporal coverage 

      Yılmaz, Oğuz (Bilkent University, 2012)
      The internet is growing day-by-day and the usage of web search engines is continuously increasing. Main page of browsers started by internet users is typically the home page of a search engine. To navigate a certain web ...
    • Looking at women's poverty in poor households 

      Baysu, Gülseli (Bilkent University, 2002)
      This thesis analyzes the internal dynamics of women’s poverty, and how women experience and cope with poverty in poor households. It mainly deals with two points, one regarding the conceptualization of women’s poverty ...
    • Looking through the printmaking : site specific screenprint 

      Özmenoğlu, Ardan (Bilkent University, 2006)
      The aim of this study is to explore the possibilities of how the surface of the background affects the foreground, which is the image of my face. When viewing an image produced by the printmaking process it can be seen ...
    • Lossless compression of medical images 

      Kılıç, Behiç Fırat (Bilkent University, 1991)
      The digital imaging techniques are used more and more in various diagnostic modalities, including computed tomography (CT), Digital Subtraction .A.ngiography (DSA), etc. As a result, a huge amount of digital images ...
    • Lossless data compression with polar codes 

      Çaycı, Semih (Bilkent University, 2013)
      In this study, lossless polar compression schemes are proposed for finite source alphabets in the noiseless setting. In the first part, lossless polar source coding scheme for binary memoryless sources introduced by ...
    • Lot sizing with nonlinear production cost functions 

      Koca, Esra (Bilkent University, 2015-07)
      In this study, we consider di erent variations of the lot sizing problem encountered in many real life production, procurement and transportation systems. First, we consider the deterministic lot sizing problem with ...
    • Lot sizing with perishable items 

      Arslan, Nazlıcan (Bilkent University, 2019-07)
      We address the uncapacitated lot sizing problem for a perishable item that has a deterministic and fixed lifetime. In the first part of the study, we assume that the demand is also deterministic. We conduct a polyhedral ...
    • Lot streaming in flow shops 

      Topaloğlu, Engin (Bilkent University, 1994)
      Lot streaming is permitting partial transfer of processed portions of a job to downstream machines, thus allowing ovelapping operations. The primary motivation is to improve the measures of performance by the quick ...
    • Lot streaming in multi stage shops 

      Şen, Alper (Bilkent University, 1994)
      In this thesis, a number of lot streaming problems in flow, open and job shops are investigated. Lot streaming is the process of splitting a job to allow for overlapping of its operations on various machines resulting ...
    • Low bit rate speech coding methods and a new interframe differential coding scheme for line spectrum pairs 

      Erzin, Engin (Bilkent University, 1992)
      Low bit rate speech coding techniques and a new coding scheme for vocal tract parameters are presented. Linear prediction based voice coding techniques (linear predictive coding and code excited linear predictive coding) ...
    • Low complexity efficient online learning algorithms using LSTM networks 

      Mirza, Ali Hassan (Bilkent University, 2018-12)
      In this thesis, we implement efficient online learning algorithms using the Long Short Term Memory (LSTM) networks with low time and computational complexity. In Chapter 2, we investigate efficient covariance information-based ...
    • Low complexity equalization for OFDM in doubly selective channels 

      Pamuk, Alptekin (Bilkent University, 2009)
      In current standards Orthogonal Frequency Division Multiplex -OFDM- is widely used for its high resistance to multi-path environments and high spectral ef- ficiency. However since the transmission duration is longer, it ...
    • Low convective field artifact elimination using dielectric padding and multichannel receive in cr-MREPT conductivity images 

      Yıldız, Gülşah (Bilkent University, 2018-08)
      Imaging the electrical conductivity of the tissues in RF frequencies is an important tool for medical diagnostic purposes along with the local specific absorption rate estimation that is closely related to MR safety ...
    • Low dimensional structures for optical and electrical applications 

      Akça, İmran (Bilkent University, 2008)
      Low dimensional structures such as quantum dots have been particularly attractive because of their fundamental physical properties and their potential applications in various devices in integrated optics and microelectronics. ...
    • Low loss optical waveguides and polarization splitters with oxidized AlxGa1-xAs layers 

      Bek, Alpan (Bilkent University, 1998)
      Low propagation loss waveguides, operating at 1.55 fim optical wavelength, are fabricated utilizing oxidized AhGai_a;As layers. MBE grown multilayer semiconductor heterostructures are characterized before and after ...
    • Low phase noise oscillator design and simulation using large signal analysis and low frequency feedback networks 

      Güngör, Çağatay Ertürk (Bilkent University, 2013)
      Spectral purity of oscillators is of great importance in both commercial and military systems. Implementing communication, radar, and Electronic Warfare systems with increasingly higher frequencies, wider bandwidths, ...
    • Low power range estimation with DSSS technique in underwater acoustics 

      Güleryüz, Mustafa Ozan (Bilkent University, 2013)
      Performance of direct sequence spread spectrum modulation (DSSS) in underwater acoustical range finding is investigated in this thesis. Range estimation using low power DSSS codes is both analyzed theoretically and ...
    • Low temperature grown GaAs based resonant cavity enhanced photodiodes 

      Bütün, Bayram (Bilkent University, 2004)
      High performance photodetectors operating in the 1.3 - 1.6 µm wavelength range are vital components for long-haul optical fiber communication systems. GaAs with its mature fabrication methods is one of the most used ...
    • Low temperature growth, characterization and applications of rf-sputtered SrTiO3 and BaSrTiO3 thin films 

      Bayrak, Türkan (Bilkent University, 2016-03)
      Among the several perovskite ferroelectric oxides, SrTiO3 (STO) and BaSrTiO3 (BST) thin lms have attracted signi cant attention due to their potential applications in oxide-based electronics. However, reliability and ...