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Now showing items 921-930 of 2113
Prevention of complications in laparoscopic hysterectomy: Experience with 1120 cases performed by a single surgeon
(Elsevier Science, 2007)
STUDY OBJECTIVE: The aim of this study is to describe a safe technique without any ureteral DESIGN: Prospective study (Canadian Task Force classification II-3). SETTING: Centre Hospitalier Interregional Edith Cavell ...
A low-complexity time-domain MMSE channel estimator for space-time/frequency block-coded OFDM systems
(Hindawi Publishing Corporation, 2006)
Focusing on transmit diversity orthogonal frequency-division multiplexing (OFDM) transmission through frequency-selective channels this paper pursues a channel estimation approach in time domain for both space-frequency ...
Determinants of corporate cash holdings: Firm level evidence from emerging markets
(Springer, 2017)
The objective of this chapter is to investigate the factors affecting corporate cash holdings in five emerging markets namely Brazil Indonesia Mexico Russia and Turkey. The sample consists of 1991 firms listed on the major ...
Recurrent tuberculous pseudoaneurysm of the descending thoracic aorta - A case report
(WESTMINSTER PUBL INC, 2006)
Tuberculous pseudoaneurysm of the aorta is a rare disease that is uniformly fatal if not treated properly. The authors present a case of a recurrent tuberculous false aneurysm of the descending thoracic aorta that was ...
Assortment optimization with log-linear demand: Application at a Turkish grocery store
(Elsevier, 2019)
In retail sector product variety increases faster than shelf spaces of retail stores where goods are presented to consumers. Hence assortment planning is an important task for sustained financial success of a retailer in ...
Advanced signal processing algorithms for wireless communications
(Springer-Verlag Berlin, 2006)
Traditional wireless technologies are not well suited to meet the extremely demanding requirements of providing the very high data rates with the ubiquity mobility and portability characteristic of cellular systems. Some ...
Performance of MIMO Enhanced Unipolar OFDM With Realistic Indoor Visible Light Channel Models
(Institute of Electrical and Electronics Engineers Inc., 2016)
Visible light communication (VLC) involves the dual use of illumination infrastructure for high speed wireless access. Designing such optical based communication systems realistic indoor optical channel modeling becomes ...
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 ...
Noncoherent Ultra Wideband Wireless Sensor Networks for Primary User Detection
(IEEE Computer Society, 2016)
As a result of increasing demand for new technologies unlicensed usage of available spectrum has become very essential to provide an efficient usage of spectrum. For that reason sensor networks may be a reliable option to ...
On Channel Estimation in DC Biased Optical OFDM Systems Over VLC Channels
(IEEE Computer Society, 2016)
Visible Light Communication(VLC) has been considered as a potential access option for 5G wireless systems to solve performance limitation due to bandwidth shortage at radio frequency (RF) band. In (VLC) system illumination ...