Results 21 to 30 of about 8,284,771 (242)

A Direct Method for Photoacoustic Tomography with Inhomogeneous Sound Speed [PDF]

open access: yes, 2015
The standard approach for photoacoustic imaging with variable speed of sound is time reversal, which consists in solving a well-posed final-boundary value problem for the wave equation backwards in time.
Belhachmi, Zakaria   +2 more
core   +2 more sources

The validation of an aerospace structure through the sine vibration analysis [PDF]

open access: yesINCAS Bulletin, 2018
Sinusoidal vibrations represent an ideal case. Technically, it is quite hard to generate pure sinusoidal vibrations without containing other spectral components, called harmonics.
Cristina-Diana BRATU   +3 more
doaj   +1 more source

Leitmann's direct method for fractional optimization problems

open access: yes, 2010
Based on a method introduced by Leitmann [Internat. J. Non-Linear Mech. {\bf 2} (1967), 55--59], we exhibit exact solutions for some fractional optimization problems of the calculus of variations and optimal control.Comment: Submitted June 16, 2009 and ...
Agrawal   +26 more
core   +1 more source

New direct contact approach to evaluate soil genotoxicity using the Vicia faba micronucleus test. [PDF]

open access: yes, 2009
A method to assess micronucleus (MN) induction in Vicia faba roots by direct contact exposure to a solid matrix was developed. The procedure comprised a 5-d germination period, as in the well-known method using aqueous extracts.
Cecchi, Marie   +4 more
core   +3 more sources

Direct numerical method for counting statistics in stochastic processes

open access: yes, 2010
We propose a direct numerical method to calculate the statistics of the number of transitions in stochastic processes, without having to resort to Monte Carlo calculations. The method is based on a generating function method, and arbitrary moments of the
Derrida B   +4 more
core   +1 more source

French language instruction in Galicia (1867–1939): Analysis of curricula, programs, and methodologies

open access: yesІсторія науки і техніки
This study investigates the evolution of French language teaching methodologies in Galicia from 1867 to 1939, with a particular focus on the transition from the grammar-translation and text-translation methods to the direct method. Utilizing a historical-
Anton Ivashchuk
doaj   +1 more source

The selection of methods in the contemporary teaching of Russian as a foreign language

open access: yesInovacije u Nastavi
Despite claims about the outdatedness of teaching methods during the 1990s, contemporary practice of foreign language teaching shows that the concept of methodology has remained a relevant pedagogical framework.
Luka М. Мedenica
doaj   +1 more source

tert-Butyl 4-{3-[6-(4-methoxyphenyl)-2-methylpyrimidin-4-yl]quinolin-2-yl}piperazine-1-carboxylate

open access: yesIUCrData, 2018
The asymmetric unit of the title compound, C30H33N5O3, contains two independent molecules, A and B. In molecule A, the tert-butyl 4-methylpiperazine-1-carboxylate group was refined as disordered over two sets of sites with an occupancy ratio of 0.821 (4):
Sumati Anthal   +6 more
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

Methods to Determine the True Ileal Calcium Digestibility of Animal Byproducts in Broiler Diets

open access: yesPoultry
Three experiments were conducted to evaluate methodologies and determine the digestibility of calcium (Ca) in ingredients of animal origin, using a completely randomized design.
Leonardo Willian de Freitas   +6 more
doaj   +1 more source

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