Haku
Aineistot 11-20 / 5975
On FE-grid relocation in solving unilateral boundary value problems by FEM
(Akademie věd České republiky, Matematický ústav, 1992)
We consider FE-grid optimization in elliptic unilateral boundary value problems.
The criterion used in grid optimization is the total potential energy of the system.
It is shown that minimization of this cost functional ...
4,4'-[Thiophene-2,5-diylbis(ethyne-2,1-diyl)]dibenzonitrile
(International Union of Crystallography, 2008)
In the solid state, the title compound, C₂₂H₁₀N₂S, forms centrosymmetric dimers by pairs of non-classical C-H...S hydrogen bonds linking approximately coplanar molecules. The benzene ring involved in this interaction makes ...
Can the adaptive Metropolis algorithm collapse without the covariance lower bound?
(Institute of Mathematical Statistics, 2011)
The Adaptive Metropolis (AM) algorithm is based on the symmetric random-walk Metropolis algorithm. The proposal distribution has the following time-dependent covariance matrix at step $n+1$ \[
S_n = Cov(X_1,...,X_n) + ...
Interactive effects of past and present environments on overwintering success - A reciprocal transplant experiment
(Blackwell Publishing, 2012)
Life-history traits are influenced by environmental factors throughout the lifespan of an individual. The relative importance of past versus present environment on individual fitness, therefore, is a relevant question in ...
Matematiikka ja tietotekniikka
(Jyväskylän yliopisto, 1996)
Signals of demographic expansion in Drosophila virilis
(BioMed Central (BMC), 2008)
Background.
The pattern of genetic variation within and among populations of a species is strongly affected by its phylogeographic history. Analyses based on putatively neutral markers provide data from which ...
Island selection on mammalian life-histories: genetic differentiation in offspring size
(BioMed Central, 2008)
BACKGROUND:
Since Darwin's pioneering work, evolutionary changes in isolated island populations of vertebrates have continued to provide the strongest evidence for the theory of natural selection. Besides macro-evolutionary ...
How much do avian predators influence cyclic bank vole populations? An experiment during a peak year
(Finnish Zoological and Botanical Publishing Board, 1991)
The influence of avian predators on bank vole (Clethrionomys glareolus) populations in four 0.5-ha enclosures was studied in central Finland in 1988. Two of the enclosures were covered with nets to keep out birds of prey, ...
2-Methyl-4-phenyl-3,4-dihydroquinazoline
(International Union of Crystallography, 2011)
The title compound, C15H14N2, was formed during the lithiation of 2-methylquinazoline with phenyllithium followed by hydrolysis of the intermediate lithium 2-methyl-4-phenyl-4H-quinazolin-3-ide. NMR spectra as well as ...
The determination of trace element concentrations in fly ash samples using ultrasound-assisted digestion followed with inductively coupled plasma optical emission spectrometry
(Elsevier, 2009)
A method of ultrasound-assisted digestion followed by inductively coupled plasma optical emission spectrometry (ICP-OES) used for the determination of trace element (chromium, copper, lead, nickel, vanadium and zinc) ...