نتایج جستجو برای: crb
تعداد نتایج: 935 فیلتر نتایج به سال:
Introduction Quantitation of metabolites by H MRS is fundamentally complicated by signal overlap. Fitting short TE spectra with the use of prior knowledge of metabolite spectra (linear combination model fitting, LCMF) is one way to ease this problem. The use of editing sequences for exclusive recording of signals from single metabolites is an alternative route to gain more accurate metabolite i...
A new algorithm is presented for adaptive comb filtering and parametric spectral estimation of harmonic signals with additive white noise. The algorithm is composed of two cascaded parts. The first estimates the fundamental frequency and enhances the harmonic component in the input, and the second estimates the harmonic amplitudes and phases. Performance analysis provides new results for the as...
This contribution considers the Cramer-Rao bound (CRB) related to phase-independent carrier frequency estimation from a noisy PSK signal. Instead of estimating the frequency jointly with the carrier phase, we treat the phase as a nuisance parameter. Ideal symbol timing is assumed. Both cases of known data (training sequence) and random data are considered. We show that frequency estimation irre...
Data-aided symbol synchronization for bursty communications utilizes a predetermined modulation sequence, i.e., a preamble, preceding the payload. For effective symbol synchronization, this preamble must be designed in accordance with the modulation format. In this paper, we analyze preambles for shaped offset quadrature phase-shift keying (SOQPSK) waveforms. We compare the performance of sever...
Title: Serum cortisol predicts death and critical disease independently of CRB-65 score in community-acquired pneumonia: a prospective observational cohort study Authors:
Abstract Background Metarhizium is one of the entomopathogenic fungi (EPF) that has been widely reported as a useful agent for controlling coconut rhinoceros beetle (CRB), Oryctes L. (Coleoptera: Scarabaeidae). Application this fungus biopesticide influenced by regional environmental conditions affect pathogenic activity against targeted pest. Several studies have proven native fungal isolates ...
In many practical parameter estimation problems, such as coefficient of polynomial regression, the true model is unknown and thus, a selection step performed prior to estimation. The data-based affects subsequent particular, oracle Cramér-Rao bound (CRB), which based on knowledge model, inappropriate for post-model-selection performance analysis system design outside asymptotic region. this pap...
Three kinds of Cr(II) ions are present on CO reduced Cr0 3 /S i0 2 samples (labelled A, B. and C), having two, three and four oxygen ligands before chemisorption, respectively. The population of CrA , CrB and Cr c on a standard sample is evaluated to be: 52%, 28%, 20%, respectively. The number of oxygen ligands determines the actual charge of the ions, increasing in the series A, B, and C, as w...
In the present work we describe the functional and molecular characterization of two Aedes aegypti allatostatin-C receptor paralogs (AeAS-CrA and AeAS-CrB) and provide a detailed quantitative study of the expression of the AS-C receptor genes in an adult insect. The tissue distribution of the two AS-C receptors differed significantly; the mRNA levels of AeAS-CrB in the Malpighian tubules were t...
The human monoclonal antibody CP-870,893 is a CD40 receptor agonist currently being developed for the treatment of cancer. A bioassay to measure neutralizing antibodies (Nab) to CP-870,893 in 5% human serum matrix was developed and validated utilizing the Daudi cell line and flow cytometric detection. Additionally, samples from CP-870,893 treated cynomolgus monkeys were analyzed in the bioassay...
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