Results 21 to 30 of about 7,458,423 (270)

Galactic Disk Warps [PDF]

open access: yes, 2000
This review addresses recent developments in the field of disk galaxy warps. Both results from a new HI survey of edgeon disk galaxies, and of simulations of the interaction between a disk+halo and an orbiting satelite, will be discussed.Comment: paper ...
Garcia, Inigo, Kuijken, Konrad
core   +3 more sources

Electrical conductance of a 2D packing of metallic beads under thermal perturbation [PDF]

open access: yes, 2000
Electrical conductivity measurements on a 2D packing of metallic beads have been performed to study internal rearrangements in weakly pertubed granular materials. Small thermal perturbations lead to large non gaussian conductance fluctuations.
Bonamy, D.   +4 more
core   +4 more sources

FIRST PASSAGE TIMES OF PH/PH/1/K AND PH/PH/1 QUEUES

open access: yesJournal of the Operations Research Society of Japan, 1987
The single-server phase type queues with finite as well as infinite capacity are considered. The Laplace transforms for some first passage times probability density functions (for example, busy period, inter- overflow time) are established. It is proved that dimensions of the inverse matrices do not exceed the maximum from the number of arrival or ...
openaire   +3 more sources

Berufsbildung gegen Bezahlung: Beweggründe und Ausgangslagen von Lernenden in der kostenpflichtigen privatschulisch organisierten beruflichen Grundbildung und Berufsmaturität

open access: yesSchweizerische Zeitschrift für Bildungswissenschaften
Eher unbeachtet von der Bildungs- und Übergangsforschung finden sich im schweizerischen Berufsbildungssystem Privatschulen, die Lehrgänge im Bereich der beruflichen Grundbildung und der Berufsmaturität gegen die Bezahlung von Schulgeld anbieten.
Luca Preite   +4 more
doaj   +1 more source

Validation of the Utrecht Mathematical Competency Scale (UMCS) for pre & primary school students [PDF]

open access: yesفصلنامه نوآوری‌های آموزشی, 2004
The purpose of current research was to validate the Utrecht Mathematical Competency Scale (UMCS) to assess the developmental level of early Mathematical competence in children of ages 4/5 to 7/5 years.
HamidReza Oreizi Samani   +2 more
doaj  

Digital encounter decision aids linked to clinical practice guidelines: results from user testing SHARE-IT decision aids in primary care

open access: yesBMC Medical Informatics and Decision Making, 2023
Background Encounter decision aids (EDAs) are tools that can support shared decision making (SDM), up to the clinical encounter. However, adoption of these tools has been limited, as they are hard to produce, to keep up-to-date, and are not available for
Pieter Van Bostraeten   +16 more
doaj   +1 more source

Accurate heats of formation for PH , PH+, and PH−

open access: yesChemical Physics Letters, 1998
Accurate heats of formation are computed for PHn and PHn+, for n=1-3, and for PHn-, for n= 1-2. The geometries and vibrational frequencies are determined at the B3LYP level of theory. The energetics are determined at the CCSD(T) level of theory. Basis set limit values are obtained by extrapolation. Spin-orbit effects are taken from experiment.
Alessandra Ricca   +1 more
openaire   +1 more source

Wilson loops in N = 4 supersymmetric Yang-Mills theory from random matrix theory [PDF]

open access: yes, 2001
Based on the AdS/CFT correspondence, string theory has given exact predictions for circular Wilson loops in U(N) N = 4 supersymmetric Yang-Mills theory to all orders in a 1/N expansion.
Akemann, G, Damgaard, PH
core   +2 more sources

Personalbindung an Schulen in herausfordernden Kontexten - Kann transformationale Führung Kündigungsabsichten mildern?

open access: yesSchweizerische Zeitschrift für Bildungswissenschaften, 2023
Die Arbeit an Schulen in herausfordernden Kontexten ist von pädagogischen Herausforderungen geprägt, welche bei den Lehrpersonen zu Kündigungsabsichten führen können.
Regula Windlinger   +2 more
doaj   +1 more source

The PH/PH/1 Multi-threshold Queue [PDF]

open access: yes, 2014
We consider a PH/PH/1 queue in which a threshold policy determines the stage of the system. The arrival and service processes follow a Phase-Type (PH) distribution depending on the stage of the system. Each stage has both a lower and an upper threshold at which the stage of the system changes, and a new stage is chosen according to a prescribed ...
Baër, Niek   +2 more
openaire   +3 more sources

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