Doppler's Principle
نویسندگان
چکیده
منابع مشابه
Sleep-disordered breathing and transcranial Dopplers in sickle cell disease.
OBJECTIVES To determine the prevalence of sleep-disordered breathing in children with sickle cell disease and whether there is an association of sleep-disordered breathing with high-risk transcranial Doppler ultrasonography (TCD) velocities. Study DESIGN Cross-sectional. SETTING Tertiary care academic medical center. PATIENTS Sixty-four children (aged 2-14 years) selected for eligible gen...
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In this paper we prove that if $X $ is a Banach space, then for every lower semi-continuous bounded below function $f, $ there exists a $left(varphi_1, varphi_2right)$-convex function $g, $ with arbitrarily small norm, such that $f + g $ attains its strong minimum on $X. $ This result extends some of the well-known varitional principles as that of Ekeland [On the variational principle, J. Ma...
متن کاملComparison of magnetic resonance volume flow rates, angiography, and carotid Dopplers. Preliminary results.
BACKGROUND AND PURPOSE We compared the results of conventional angiography, carotid Doppler, and magnetic resonance angiography volume flow rates to determine the clinical utility of volume flow rate assessment of blood flow to the anterior circulation in patients with carotid occlusive disease. METHODS From 11 symptomatic patients, a total of 22 extracranial carotid arteries were studied wit...
متن کاملClassification of human activity on water through micro-Dopplers using deep convolutional neural networks
Detecting humans and classifying their activities on the water has significant applications for surveillance, border patrols, and rescue operations. When humans are illuminated by radar signal, they produce micro-Doppler signatures due to moving limbs. There has been a number of research into recognizing humans on land by their unique micro-Doppler signatures, but there is scant research into d...
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ژورنال
عنوان ژورنال: Nature
سال: 1890
ISSN: 0028-0836,1476-4687
DOI: 10.1038/043080c0