24,733 research outputs found
Satisfiability of CTL* with constraints
We show that satisfiability for CTL* with equality-, order-, and
modulo-constraints over Z is decidable. Previously, decidability was only known
for certain fragments of CTL*, e.g., the existential and positive fragments and
EF.Comment: To appear at Concur 201
Gender-Job Satisfaction Differences across Europe: An Indicator for Labor Market Modernization
In 14 member states of the European Union, women's relative to men's levels of job satisfaction are compared by using data of the European Household Community Panel. The countries under consideration can be assigned to three different groups. Denmark, Finland and the Netherlands do not show significant gender-job satisfaction differences. In contrast, in Portugal men are more satisfied with their jobs than women. However, in the vast majority of the investigated countries female workers show a significantly higher level of job satisfaction. As the majority of women are disadvantaged compared to men in the labor market, the findings clearly demonstrate a gender-job satisfaction paradox in these countries. From this point of view, only Denmark, Finland and the Netherlands display gender-job satisfaction equality. The results suggest that objective (socio-economic and institutional) determinants of labor market statuses and subjective (assessed and evaluated) perspectives are mutually complementary. The more restrictive the labor market access and process is for women, the more likely a gender-job satisfaction paradox is to emerge in any country. With regard to the process of labor market modernization, the results support the hypotheses that equal opportunities for women and men like in Scandinavian countries and also partially in the Netherlands implicate that the gender-job satisfaction paradox does not appear anymore due to a fading-out process over past decades.Cross-national comparison; Gender-job satisfaction paradox; Labor supply; Labor market modernization
Chiral SU(3) Symmetry and Strangeness
In this talk we review recent progress on the systematic evaluation of the
kaon and antikaon spectral functions in dense nuclear matter based on a chiral
SU(3) description of the low-energy pion-, kaon- and antikaon-nucleon
scattering data.Comment: 9 pages, 4 figures, invited talk given by M.F.M.L. at the SQM2001
conferenc
Kaon and antikaon properties in cold nuclear medium
We present results of a self-consistent calculation for the kaon and antikaon
spectral functions in cold nuclear matter, using as input the kaon-nucleon and
antikaon-nucleon scattering amplitudes of the vacuum. We investigate the effect
of in-medium pion dressing on the antikaon-nucleon scattering amplitudes and
antikaon spectral function. We find the influence of pion dressing to be minor
on the antikaon spectral function and limited on the hyperon resonances causing
only a small additional broadening. An exception is the \Sigma(1690). At
nuclear saturation density an attractive mass shift of about 20 MeV and width
of about 130 MeV is obtained. The kaon shows a repulsive mass increase of 36
MeV and a small width of the quasiparticle peak at saturation density.Comment: 8 pages, 4 figures, submitted to Heavy Ion Physic
Self-consistent antikaon dynamics in isospin-asymmetric nuclear medium
We investigate properties of antikaons and hyperon resonances in
isospin-asymmetric nuclear medium, using a self-consistent, covariant scheme
based on vacuum antikaon-nucleon scattering amplitude.Comment: 9 pages, 5 figures, uses budapest.sty (included);to be published in
the Proceedings of the Budapest'2002 Workshop on Quark and Hadron Dynamics,
Budapest, Hungary, 3-7 March 200
Higgs self coupling measurement in e+e- collisions at center-of-mass energy of 500 GeV
Feasibility of the measurement of the trilinear self-couplings of the Higgs
boson is studied. Such a measurement would experimentally determine the
structure of the Higgs potential. Full hadronic and semi-leptonic final states
of the double-Higgs strahlung have been investigated.Comment: 10 pages, 5 tables, 8 figure
Mrk 1014: An AGN Dominated ULIRG at X-rays
In this paper we report on an XMM-Newton observation of the ultraluminous
infrared QSO Mrk 1014. The X-ray observation reveals a power-law dominated
(photon index of about 2.2) spectrum with a slight excess in the soft energy
range. AGN and starburst emission models fit the soft excess emission equally
well, however, the most plausible explanation is an AGN component as the
starburst model parameter, temperature and luminosity, appear physically
unrealistic. The mean luminosity of Mrk 1014 is about 2 times 10^44 erg s^-1.
We have also observed excess emission at energies greater than 5 keV. This
feature could be attributed to a broadened and redshifted iron complex, but
deeper observations are required to constrain its origin. The light curve shows
small scale variability over the 11 ks observation. There is no evidence of
intrinsic absorption in Mrk 1014. The X-ray observations support the notion of
an AGN dominated central engine. We establish the need for a longer observation
to constrain more precisely the nature of the X-ray components.Comment: 5 pages incl. 3 figures, MNRAS in pres
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