Browsing by Access Type "info:eu-repo/semantics/openAccess"
Now showing items 421-440 of 3158
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Changing the identity of a place by changing street names: The process of renaming the streets of Üsküdar between 1927-1934
(Istanbul Teknik Universitesi, Faculty of Architecture, 2023)Street names are part of our everyday lives. People constantly encounter street signs during their daily practices. Their visible position in the urban landscape makes street names suitable to use as visual/linguistic ... -
Channel Estimation and Equalization for Alamouti SF-Coded OFDM-UWA Communications
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2021-02)In this paper, a new channel estimation and equalization algorithm for underwater acoustic (UWA) communications is presented. The proposed algorithm is developed to meet the requirements of underwater time-varying sparse ... -
Channel Estimation for DCO-OFDM Based VLC Systems in the Presence of Clipping Noise
(IEEE, 2020)Visible Light Communication(VLC) has been considered as a potential access option for 6G wireless systems to solve performance limitation due to bandwidth shortage at radio frequency (RF) band. In VLC system, illumination ... -
Channel estimation for MIMO-OFDM systems in fixed broadband wireless applications
(IEEE, 2007)Systems employing multiple transmit and receive antennas known as multiple input multiple output (MIMO) systems can be used with OFDM to improve the resistance to channel impairments. Thus the technologies of OFDM and MIMO ... -
Channel Estimation for Residual Self-Interference in Full-Duplex Amplify-and-Forward Two-Way Relays
(IEEE-INST Electrical Electronics Engineers Inc, 2017)Training schemes for full duplex two-way relays are investigated. We propose a novel one-block training scheme with a maximum likelihood estimator to estimate the channels between the nodes as well as the residual ... -
Channel Estimation for SM Systems over Time-Varying Rayleigh Fading Channels
(IEEE, 2014)This paper is concerned with the challenging and timely problem of channel estimation for spatial modulated systems in the presence of time varying channels. Recently estimation of channel state information for SM systems ... -
Channel Estimation for Spatial Modulation Orthogonal Frequency Division Multiplexing Systems
(IEEE, 2015)A combination of spatial modulation and orthogonal frequency division multiplexing (SM-OFDM) has been recently proposed for multicarrier systems while assuming the perfect channel state information (P-CSI) available at the ... -
Channel estimation for visible light communications using neural networks
(Institute of Electrical and Electronics Engineers Inc., 2016)Visible light communications (VLC) is an emerging field in technology and research. Estimating the channel taps is a major requirement for designing reliable communication systems. Due to the nonlinear characteristics of ... -
Channel estimation in underwater cooperative OFDM system with amplify-and-forward relaying
(IEEE, 2012)This paper is concerned with a challenging problem of channel estimation for amplify-and-forward cooperative relay based orthogonal frequency division multiplexing (OFDM) systems in the presence of sparse underwater acoustic ... -
Channel Modeling for Visible Light Communications
(Springer-Verlag Berlin, 2016)In this chapter, we present a novel and realistic channel modeling approach for visible light communications that overcomes the limitations of previous works. In our work, we consider wavelength dependency, effect of ... -
Characteristics and geochemistry of Precambrian ophiolites and related volcanics from the Istanbul-Zonguldak Unit Northwestern Anatolia Turkey: following the missing chain of the Precambrian South European suture zone to the east
(Elsevier Science Bv, 2004)The Precambrian metamorphic basement of the Istanbul-Zonguldak Unit (IZU) NW Anatolia Turkey is represented by the Sunnice Group composed essentially of four different metamorphic assemblages: (1) Cele metaophiolite (2) ... -
Characterization Of Mps Capped Cds Quantum Dots And Formation Self-Assembled Quantum Dots Thin Films On A Glass Substrate
(Natl Inst R&D Materials Physics, 2011)Colloidal powdered and thin film forms of MPS capped CdS quantum dots have been produced by combination of colloidal chemistry and sol-gel method. Nanoparticles were self-assembled directly on a glass substrate using spin ... -
A characterization of totally umbilical hypersurfaces of a space form by geodesic mapping
(Springer, 2013)The idea of considering the second fundamental form of a hypersurface as the first fundamental form of another hypersurface has found very useful applications in Riemannian and semi-Riemannian geometry especially when ... -
Characterizing the Advective Hot Flows of Nova-like Cataclysmic Variables in the X-Rays: The Case of BZ Cam and V592 Cas
(Iop Publishing Ltd, 2022)We present a joint spectral analysis of ROSAT PSPC, Swift X-ray Telescope, and Nuclear Spectroscopic Telescope Array Focal Plane Module A/B (FPMA/B) data of the nova-like (NL) cataclysmic variables (CVs) BZ Cam and V592 ... -
Charting spatial practices of feminisms in Turkey: Sensitivities, tools, and tactics
(Kadir Has Üniversitesi, 2020)Feminism has recently become a widely debated issue in political struggles and popular culture on a global scale. Some interpret these days as 'fourth wave feminism', fostered by concerted activities in both physical and ... -
Chebyshev nets formed by Ricci curves in a 3-dimensional Weyl space
(Elsevier Science Bv, 2005)In this paper Ricci curves in a 3-dimensional Weyl space W-3(g T) are defined and it is shown that any 3-dimensional Chebyshev net formed by the three families of Ricci curves in a W-3(g T) having a definite metric and ... -
Chelate extraction of transition metal ions by ethylene diamine diacetic acid with n-substituted octadecyl groups
(Taylor & Francis Inc, 2002)An organic-soluble chelating agent NN'-di-n-octadecyl ethylenediamine-NN'-diacetic acid (DOED) has been synthesized in two steps by (i) condensation of dibromoethane with 1-amino octadecane (octadecylamine) and (ii) ... -
Chemical and Biological Investigations of Allium scorodoprasum L. Flower Extracts
(Mdpi, 2023)This study was designed to investigate the impact of different extraction solvent systems on the chemical composition and biological activities of Allium scorodoprasum L. (Amaryllidaceae)-the medicinal plant that was ... -
Children in 2077: Designing children's technologies in the age of transhumanism
(Association for Computing Machinery, 2020)What for and how will we design children's technologies in the transhumanism age, and what stance will we take as designers? This paper aims to answer this question with 13 fictional abstracts from sixteen authors of ... -
China's neo-techno nationalism and securitization of Huawei by the Trump Government
(Kadir Has Üniversitesi, 2021)The competition between China and the US that has dramatically increased in the Trump administration constitutes one of the main contested issues in international relations. The race has not only been limited in the economy ...