189,506 research outputs found
Design Guide for glass fiber reinforced metal pressure vessel
Design Guide has been prepared for pressure vessel engineers concerned with specific glass fiber reinforced metal tank design or general tank tradeoff study. Design philosophy, general equations, and curves are provided for safelife design of tanks operating under anticipated space shuttle service conditions
Heather Landes and friends
Jean-Michel Damase, arr. Michael KocourPaul HindemithGary SchockerBen MilesVictor YoungMichael KocourGeorge Gershwi
DEVELOPING COUNTRIES AND THE URUGUAY ROUND NEGOTIATIONS ON AGRICULTURE
International Relations/Trade,
Some t-tests for N-of-1 trials with serial correlation
N-of-1 trials allow inference between two treatments given to a single
individual. Most often, clinical investigators analyze an individual's N-of-1
trial data with usual t-tests or simple nonparametric methods. These simple
methods do not account for serial correlation in repeated observations coming
from the individual. Existing methods accounting for serial correlation require
simulation, multiple N-of-1 trials, or both. Here, we develop t-tests that
account for serial correlation in a single individual. The development includes
effect size and precision calculations, both of which are useful for study
planning. We then evaluate and compare their Type I and II errors and interval
estimators to those of usual t-tests analogues via Monte Carlo simulation. The
serial t-tests clearly outperform the usual t-tests commonly used in reporting
N-of-1 results. Examples from N-of-1 clinical trials in fibromyalgia patients
and from a behavioral health setting exhibit how accounting for serial
correlation can change inferences. These t-tests are easily implemented and
more appropriate than simple methods commonly used; however, caution is needed
when analyzing only a few observations. Keywords: Autocorrelation; Cross-over
studies; Repeated measures analysis; Single-case experimental design;
Time-seriesComment: 23 pages, 6 figures, 6 table
Analysis of filament reinforced metal-shell pressure vessels
Computer program analyzes design requirements and computes designs for metal-lined filament-wound pressure vessels with either geodesic /helical/ or in-plane filament winding patterns on the cylindrical portion and over the ends, reinforced by circumferential windings on the cylindrical portion
Wideband wattmeter for instant measurement of real power
Portable, solid state wattmeter with wideband (dc to 1 MHz) linear multiplier which provides true four quadrant operation permitting instantaneous indication of real power as oscilloscope display is described
Übersicht der nach Naturschutzrecht geschützten Gebiete und Objekte Sachsen-Anhalts und Informationen zu den Änderungen bei den Schutzgebieten sowie im Bestand der NATURA 2000-Gebiete im Jahr 2004
Im Landesamt für Umweltschutz wird gemäß §42 des Naturschutzgesetzes des Landes Sachsen-Anhalt das zentrale Naturschutzregister des Landes geführt. Alljährlich zum Jahresende findet mit den zuständigen Naturschutzbehörden ein Abgleich der jeweiligen Schutzgebiete und -objekte aller Schutzgebietskategorien statt; ein Resultat ist die vorliegende Schutzgebietsstatistik des Landes. Angaben zur Anzahl und zu den Flächen der Gebiete und Objekte sind zusammengefasst
Reliability: an introduction
none3openBonzio S.; Landes J.; Osimani B.Bonzio, S.; Landes, J.; Osimani, B
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