نتایج جستجو برای: cma
تعداد نتایج: 2518 فیلتر نتایج به سال:
BACKGROUND The diversity in the perceived prevalence, recovery, and risk factors for cow's milk allergy (CMA) necessitated a large-scale, population-based prospective study. OBJECTIVE We sought to determine the prevalence, cross-reactivity with soy allergy, and risk factors for the development of CMA. METHODS In a prospective study the feeding history of 13,019 infants was obtained by means...
Increasing the speed of convergence of the constant modulus algorithm for blind channel equalization
The constant modulus algorithm (CMA) is an excellent technique for blind channel equalization. Recently signed error version of CMA (SE-CMA) and dithered signed error version (DSE-CMA) have been proposed which afford overall computational efficiency. We propose three different error functions for faster convergence. This would be essential for communication systems, which cannot afford a high s...
The covariance matrix adaptation (CMA) is one of the most powerful self adaptation mechanisms for Evolution Strategies. However, for increasing search space dimension N , the performance declines, since the CMA has space and time complexity O(N2). Adapting the main mutation vector instead of the covariance matrix yields an adaptation mechanism with space and time complexity O(N). Thus, the main...
The paper proposes a low-complexity concurrent constant modulus algorithm (CMA) and soft decisiondirected (SDD) scheme for fractionally spaced blind equalization of high-order quadrature amplitude modulation channels. We compare our proposed blind equalizer with the recently introduced state-of-art concurrent CMA and decision-directed (DD) scheme. The proposed CMA+SDD blind equalizer is shown t...
OBJECTIVE To evaluate the association between aberrant right subclavian artery (ARSA), with or without additional risk factors for aneuploidy or ultrasound abnormality, and results of chromosomal microarray analysis (CMA). METHODS This was a multicenter study of fetuses diagnosed with ARSA that underwent genetic analysis by CMA, all samples being analyzed in the same laboratory. Clinical inve...
Chronic metabolic acidosis (CMA) is associated with decreased NaCl reabsorption in the proximal tubule (PT). However, the effect of CMA on Na(+) transport in the distal tubule (DT) and collecting duct (CD) is poorly understood. Rats were placed in metabolic cages and had access to water (control), 0.28 M NH(4)Cl, or 0.28 M KCl solutions in a pair-feeding protocol for 5 days (5d). Metabolic acid...
Cow’s milk allergy (CMA) is one of the most commonly reported food allergies in infancy (Prescott et al. 2013). Incidence of CMA peaks during early childhood and tends to recede later, with the reported prevalence to be 0.6–2.5% in pre-schoolers, 0.3% in older children and teens, and less than 0.5% in adults (Fiocchi et al. 2010). A recent study performed in Europe supports these findings by de...
Allylestrenol (ALE) and chlormadinone acetate (CMA) were administered to patients with prostatomegaly by the double-blind method, and the effects of these antiandrogens on their sexual function were objectively compared. Each agent was orally administered to 58 patients in a dosage of 50 mg/day for 12 consecutive weeks. For the objective evaluation of the sexual function, nocturnal penil tumesc...
OBJECTIVE The objective of our study was to evaluate whether gray-scale and color Doppler ultrasound can reveal intestinal inflammation in infants with cow's milk allergy (CMA). SUBJECTS AND METHODS This study evaluated the clinical findings and grayscale and color Doppler sonograms of 34 infants. Seventeen 0- to 6-month-old infants with suspected CMA and 17 nonsymptomatic age-matched infants...
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