نتایج جستجو برای: csi

تعداد نتایج: 4935  

2013
Edward Zimbudzi

INTRODUCTION Coagulation-free dialysis, also commonly known as "heparin-free" dialysis, can be a challenging procedure as it increases the risk of clotting the dialysis circuit. Utilizing a better saline flushing technique can lead to improved patient outcomes as well as huge financial benefits to the health institution. The purpose of this study was to compare the effectiveness of continuous s...

Journal: :Journal of Structural Heart Disease 2018

Journal: :EMBO reports 2015

Journal: :Magnetic resonance in medicine 1993
J R Roebuck D O Hearshen M O'Donnell T Raidy

Accurate phasing of MRS spectra is often difficult unless time varying phase effects produced by gradient-induced eddy currents that persist during data acquisition are eliminated. This effect is particularly problematic in 1H-CSI spectra where frequency shifts produced by static field inhomogeneity and phase shifts produced by eddy currents combine. In this paper we present a method that corre...

2005
Mai Vu Arogyaswami Paulraj

Transmit channel side information (Tx-CSI), particularly the mean and covariance, helps to increase MIMO wireless capacity. We formulate a dynamic Tx-CSI framework, using outdated channel measurements and channel statistics, to create an effective channel mean and covariance and establish the capacity expression given such Tx-CSI. We then derive the asymptotic capacity-optimal input signal at l...

Journal: :Entropy 2015
Bin Dai Zheng Ma Linman Yu

In this paper, the general wiretap channel with channel state information (CSI) at the transmitter and noiseless feedback is investigated, where the feedback is from the legitimate receiver to the transmitter, and the CSI is available at the transmitter in a causal or noncausal manner. The capacity-equivocation regions are determined for this model in both causal and noncausal cases, and the re...

Journal: :IEEE Wireless Commun. Letters 2015
Ming Lei M. Reza Soleymani

This paper investigates the Diversity Multiplexing Tradeoff (DMT) of the generalized quantizeand-forward (GQF) relaying scheme over the slow fading half-duplex multiple-access relay channel (HD-MARC). The compress-and-forward (CF) scheme has been shown to achieve the optimal DMT when the channel state information (CSI) of the relay-destination link is available at the relay. However, having the...

Journal: :Magnetic resonance in medicine 2008
Dirk Mayer Dong-Hyun Kim Daniel M Spielman Roland Bammer

Spiral chemical shift imaging (CSI) is a fast CSI technique that simultaneously encodes 1D spectral and 2D spatial information. Therefore, it potentially allows one to perform a 2D-CSI experiment in a single shot. However, for most applications, limitations on maximum gradient strength and slew rate make multiple excitations necessary in order to achieve a desired spectral bandwidth. In this wo...

2006
Baptiste Vrigneau Philippe Rostaing Gilles Burel

In order to compare the performances of three transmission schemes of keyinterest able to reach the maximum diversity order, guarantee of robust transmission, we used a dual-polarization channel model to take into account polarization diversity and transmit/receive correlation. These schemes under study were i)two systems using full channel state information (CSI) at the transmitter side (Tx-CS...

Journal: :The Biochemical journal 1995
C G Mitchell S C Anderson E M el-Mansi

Two types of citrate synthase (CS) have been purified from Pseudomonas aeruginosa, a 'large' form (CSI) and a 'small' form (CSII). The M(r)s of the CSI and CSII isoenzymes were determined to be 240,000 +/- 16,000 (mean +/- S.E.M.) and 80,300 +/- 3800 respectively. Chemical cross-linking of the native enzymes with either dimethyl suberimidate or glutaraldehyde followed by electrophoretic analysi...

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