Ppl-uk_doe_E000271 1..9
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چکیده
Ecological inference is a general statistical problem where a response variable is not available at the subject level because summary statistics are reported for groups only. It consists of merging information from different databases which are not linked to each other at the record level. We consider an election scenario where in each electoral precinct the fraction of voting-age people who turn out to vote, the fraction of black population and the number of voting-age people are observed. The proportions of blacks and of whites who vote are unobserved because electoral results and census data are not linked.
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Measurement of intrathoracic pressure in the newborn.
Measurement of intrathoracic pressure in the newborn. George Russell and Robert Dinwiddie. Department of Child Health, University of Aberdeen. Changes in intraoesophageal pressure (Poes) have been shown, subject to certain limitations, to reflect changes in intrapleural pressure (Ppl) in the adult. However, though Poes is widely used in the study of respiratory mechanics in the newborn, the onl...
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BACKGROUND Gastroesophageal variceal bleeding is a common complication of portal hypertension. Current guidelines recommend thorn-blockers for primary prophylaxis. However, evidence suggests that endoscopic variceal ligation (EVL) reduce bleeding episodes. AIMS To compare endoscopic EVL with propranolol (PPL) for primary prophylaxis of variceal bleeding. METHODS We conducted a randomized co...
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We study and compare two types of connectionist learning methods for model-free regression problems: 1) the backpropagation learning (BPL); and 2) the projection pursuit learning (PPL) emerged in recent years in the statistical estimation literature. Both the BPL and the PPL are based on projections of the data in directions determined from interconnection weights. However, unlike the use of fi...
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Opiates are still the most effective and widely used treatments for acute and chronic pain. However, the problems associated with morphine and other standard opioid analgesics severely limit their effectiveness in the clinic. PPL-101 and PPL-103 derived from morphine and morphinan ring systems contain a chiral N-substituent, which confers it with a unique combination of high-binding affinities ...
متن کاملPrimate pleuroesophageal tissue barrier frequency response and esophageal pressure waveform bandwidth in health and acute lung injury.
BACKGROUND Dynamic intraesophageal pressure (Pes) is used to estimate intrapleural pressure (Ppl) to calculate lung compliance and resistance. This study investigated the nonhuman primate Ppl-Pes tissue barrier frequency response and the dynamic response requirements of Pes manometers. METHODS In healthy monkeys and monkeys with acute lung injury undergoing ventilation, simultaneous Ppl and P...
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