8,814 research outputs found
Ragaszkodás és én-alakítás a fiatalok fogyasztásában – A fogyasztói lojalitás és az énkép közötti kapcsolat vizsgálata
Investigation of parental care in avocets from the perspectives of behavioural ecology and conservation biology
This research encompasses both basic (behavioural ecology) and
applied (conservation biology) aspects of the biology of Avocets (Recurvirostra
avosetta L.). My central question is whether adoption of alien young can be
adaptive for adults and the adopted chicks. I evaluate proximate-level hypotheses
by quantifying costs and/or bene�ts of both adopters and adoptees. I observed
adoption of alien chicks in 19% of the families in 1998 and 1999. My �rst results
suggest that adoption may be adaptive for both the adoptive adult and the adopted
chick. This is because adopted chicks were more likely to �edge than their siblings
remaining in their own family and the �edging success of the adopter adults' own
chicks was higher than that of nonadoptive adults' chicks.
In my applied research I collect data on avocet breeding biology to �nd out
whether the current population increase in Hungary results from the reproductive
output of the Hungarian population or is maintained by an in�ux of birds from
coastal populations. I also use these data to design and implement e�ective
conservation measures by which to further enhance the Hungarian population of the
endangered Avocet. I successfully increased the hatching success of mainland nests
by erecting a fence to keep ground predators away. The �edging success of chicks
also increased after a predator control in the most a�ected areas. By providing
information about the timing of nesting to nature conservation authorities I assured
the successful breeding of one �fth of Hungary's avocet population on a �shpond
in 1999
Note on a paper "An Extension of a Theorem of Euler" by Hirata-Kohno et al
In this paper we extend a result of Hirata-Kohno, Laishram, Shorey and
Tijdeman on the Diophantine equation where
and are positive integers such that $\gcd(n,d)=1.
Fluctuations at finite temperature and density
Fluctuations of conserved charges in a grand canonical ensemble can be
calculated as derivatives of the free energy with respect to the respective
chemical potential. They are directly related to experimentally available
observables that describe the hadronization in heavy ion collisions. The same
derivatives can be used to extrapolate zero density results to finite chemical
potential. We review the recent lattice calculations in the staggered formalism
and discuss its implications to phenomenology and resummed perturbation theory.Comment: 15 pages, 11 figures, The 33rd International Symposium on Lattice
Field Theor
On the Diophantine equation
In this paper we consider the Diophantine equation where
are integer unknowns with and are odd primes and
We prove that there are only finitely many solutions
for which is not a sum of two consecutive squares. We also
study the above equation with fixed and with fixed $q.
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