Browsing by Title
Now showing items 3754-3773 of 4497
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Sparse underwater acoustic channel estimation in colored Gaussian noise [Renkli? Gauss gürültülü seyrek sualtı akusti?k kanalların kestirimi]
(IEEE, 2012)Cooperative underwater acoustic communication systems come into prominence in recent years. Since underwater channels are sparse and additive noise entering the system is colored Gaussian noise. Therefore it is very difficult ... -
Sparsity Preserving Computation for Spectral Projectors
(Amer Inst Physics, 2011)Several areas of applications such as model order reduction preconditioner design and eigenvalue problems for spectral projectors can be found in the literature. In this paper a fast and sparsity preserving approach for ... -
A sparsity-preserving spectral preconditioner for power flow analysis
(TUBITAK Scientific & Technical Research Council Turkey, 2016)Due to the ever-increasing demand for more detailed and accurate power system simulations the dimensions of mathematical models increase. Although the traditional direct linear equation solvers based on LU factorization ... -
Spatial Constellation Design Based Generalized Space Shift Keying for Physical Layer Security of Multi-User MIMO Communication Systems
(Institute of Electrical and Electronics Engineers Inc., 2021)We propose a novel spatial constellation design (SCD) method with generalized space shift keying (GSSK-SCD) signaling for physical layer security (PLS) in multi-user (MU) multiple-input multiple-output (MIMO) communication ... -
Spatial impacts of urban infrastructure: Istanbul Marmaray case
(Kadir Has Üniversitesi, 2020)Property markets are strictly affected by the infrastructure networks. This study explores the impacts of urban infrastructure projects on urban space and housing. From this point forth, the research questions are built ... -
Spatial Modulation Aided Physical Layer Security for NOMA-VLC Systems
(IEEE-Inst Electrical Electronics Engineers Inc, 2023)We consider the physical layer security (PLS) problem in multi-user non-orthogonal multiple access (NOMA) enabled multiple-input multiple-output (MIMO) visible light communication systems intercepted by a passive eavesdropper ... -
Special issue on broadband mobile communications at very high speeds
(Springer International Publishing Ag, 2012)[Abstract Not Available] -
Spectacle-city and the individual: Istanbul in contemporary memoirs
(Kadir Has Üniversitesi, 2021)In recent years, the "old days" of Istanbul has become an important area of interest from the field of culture and arts to the media and academia. Especially after 1990, many books about Istanbul began to be published. ... -
A spectral divide and conquer method based preconditioner design for power flow analysis
(2010)Power system simulations most of the time require solution of a large sparse linear system. Traditional methods such as LU decomposition based direct methods are not suitable for parallelization in general. Thus Krylov ... -
Spectroscopic study of film formation from polystyrene latex/TiO2 nanocomposites prepared by dip-coating method
(Wiley-Blackwell, 2014)In this study we investigated the influence of TiO2 content and thickness of polystyrene (PS) template on film-formation behavior of PS/TiO2 composites using fluorescence and ultraviolet-visible techniques in conjunction ... -
The speed of stock price adjustment to corporate announcements: Insights from Turkey
(Elsevier, 2020)The market reaction speeds to the news flow are currently measured at the millisecond level in developed markets. We investigate, using a unique setting from Turkey, whether the market reaction speeds in less sophisticated ... -
Sperm morfolojisi ve motilitesinin intrasitoplazmik sperm enjeksiyonu sonuçları üzerine etkileri
(Kadir Has Üniversitesi, 2005)1. ÖZET înfertilite, kısaca istem dışı çocuk sahibi olamama durumudur. Çiftlerin yaklaşık %10- 20'sini etkileyen bir problemdir ve korunmasız düzenli cinsel ilişkiye rağmen 1 yıllık sûre sonunda gebe kalmaması olarak ... -
Spermatozoon ve reaktif oksijen türevleri
(2005)Reaktif oksijen türevleri (ROT), biyokimyasal olaylar zincirinde oksijenin organik maddelerle etkileşimi sonucu ortaya çıkan reaktif ara ürünlerdir. ROT’nin fizyolojik mekanizmalar›n düzenlenmesinde rol aldıkları ... -
Spin-s spin-glass phases in the d=3 Ising model
(Amer Physical Soc, 2021)All higher-spin (s >= 1/2) Ising spin glasses are studied by renormalization-group theory in spatial dimension d = 3, exactly on a d = 3 hierarchical model and, simultaneously, by the Migdal-Kadanoff approximation on the ... -
SPINAL: scalable protein interaction network alignment
(Oxford University Press, 2013)Motivation: Given protein-protein interaction (PPI) networks of a pair of species a pairwise global alignment corresponds to a one-to-one mapping between their proteins. Based on the presupposition that such a mapping ... -
Spline Based Channel Estimation for STBC-SM Systems over Fast-Varying Rician Fading Channels
(IEEE, 2015)In the STBC-SM systems the information is carried both by STBC symbols and indices of the transmit antennas from which these symbols are transmitted. Channel estimation is a critical process at the receiver during the ... -
Spline based channel estimation for STBC-SM systems over fast-varying rician fading channels
(Institute of Electrical and Electronics Engineers Inc., 2015)In the STBC-SM systems, the information is carried both by STBC symbols and indices of the transmit antennas from which these symbols are transmitted. Channel estimation is a critical process at the receiver during the ... -
Spline Interpolation Based Channel Estimation for ACO-OFDM over Visible Light Channels
(IEEE, 2016)Visible light communication has been considered one of promising candidate technology to solve performance limitation due to bandwidth shortage at radio frequency (RF) band. In VLC system, the visible light is used not ... -
Spline interpolation based channel estimation for ACO-OFDM over visible light channels
(Institute of Electrical and Electronics Engineers Inc., 2016)Visible light communication has been considered one of promising candidate technology to solve performance limitation due to bandwidth shortage at radio frequency (RF) band. In VLC system, the visible light is used not ... -
Spontaneous Past and Future Thinking About the COVID-19 Pandemic Across 14 Countries: Effects of Individual and Country-Level COVID-19 Impact Indicators
(Amer Psychological Assoc, 2022)In 2020, the world was amid a global health crisis-the COVID-19 pandemic. Nations had varying levels of morbidity and mortality and adopted different measures to prevent the spread of infection. Effects of the pandemic on ...
