1,365,920 research outputs found
Reputational Risk and Impact Assessment of Corporate Social Responsibility on Profitability and Growth of Manufacturing Companies in Nigeria
This paper examines factors affecting corporate concerns about reputation and its impact on profitability and growth of the companies
Soft gamma repeaters outside the Local group
We propose that the best sites to search for SGRs outside the Local group are
galaxies with active massive star formation. Different possibilities to observe
SGR activity from these sites are discussed. In particular we searched for
giant flares from nearby galaxies ( -- 4 Mpc) M82,
M83, NGC 253, and NGC 4945 in the BATSE data. No candidates alike giant SGR
flares were found. The absence of such detections implies that the rate of
giant flares with energy release in the initial spike above
erg is less then 1/25 yr in our Galaxy. However, hyperflares similar to
the one of 27 December 2004 can be observed from larger distances.
Nevertheless, we do not see any significant excess of short GRBs from the Virgo
galaxy cluster and from galaxies Arp 299 and NGC 3256 with extremely high star
formation rate. This implies that the galactic rate of hyperflares with energy
release erg is less than yr. With this
constraint the fraction of possible extragalactic SGR hyperflares among BATSE
short GRBs should not exceed few percents. We present a list of short GRBs
coincident with galaxies mentioned above, and discuss the possibility that some
of them are SGR giant flares. We propose that the best target for observations
of extragalactic SGR flares by {\it Swift} is the Virgo cluster.Comment: 14 pages with 3 figures; accepted to MNRAS (final version
The content of catecholamines in the adrenal glands and sections of the brain under hypokinesia and injection of some neurotropic agents
The dynamics of catecholamine content were studied in the adrenal glands and in various region of the brain of white rats under hypokinesia and injections of neurotropic agents. Profound changes in body catecholamine balance occured as a result of prolonged acute restriction of motor activity. Adrenalin retention increased and noradrenanalin retention decreased in the adrenal glands, hypothalamus, cerebral hemispheres, cerebellum and medulla oblongata. Observed alterations in catecholamine retention varied depending upon the type of neurotropic substance utilized. Mellipramine increased catecholamine retention in the tissues under observation while spasmolytin brought about an increase in adrenalin concentration in the adrenals and a decrease in the brain
Selection Wages and Discrimination
Applicants for any given job are more or less suited to fill it, and the firm will select the best among them. Increasing the wage offer attracts more applicants and makes it possible to raise the hiring standard and improve the productivity of the staff. Wages that optimize on the trade-off between the wage level and the productivity of the workforce are known as selection wages. As men react more strongly to wage differentials than females, the trade-off is more pronounced for men and a profit-maximizing firm will offer a higher wage for men than for women in equilibrium
Fluctuations and vortex pattern ordering in fully frustrated XY model with honeycomb lattice
The accidental degeneracy of various ground states in a fully frustrated XY
model with a honeycomb lattice is shown to survive even when the free energy of
the harmonic fluctuations is taken into account. The reason for that consists
in the existence of a hidden gauge symmetry between the Hamiltonians describing
the harmonic fluctuations in all these ground states. A particular vortex
pattern is selected only when anharmonic fluctuations are taken into account.
However, the observation of vortex ordering requires relatively large system
size L>>100000.Comment: 4 pages, 2 figures, RevTeX4, a different method is used to find which
state is selected by anharmonic fluctuations, the last third of the text is
completly rewritte
Projection of relativistically moving objects on a two-dimensional plane, the `train' paradox and the visibility of the Lorentz contraction
Although many papers have appeared on the theory of photographing
relativistically moving objects, pioneered by the classic work of Penrose and
Terrell, three problems remain outstanding. (1) There does not seem to exist a
general formula which gives the projection of a relativistically moving object,
applicable to any object no matter how complicated, on a two-dimensional plane
in conformity with Terrell's observation. (2) No resolution seems to have been
provided for the associated so-called `train' paradox. (3) No analytical
demonstration seems to have been offered on how the Lorentz contraction may be
actually detected on a photograph. This paper addresses all of these three
problems. The analysis does not require any more than trigonometry and
elementary differentiation.Comment: LaTeX, 14 pages, 6 figures, misprint correcte
Multimode analysis of the light emitted from a pulsed optical parametric oscillator
We present a multimode treatment of the optical parametric oscillator, which
is valid for both pulsed and continuous-wave pump fields. The two-time
correlation functions of the output field are derived, and we apply the theory
to analyze a scheme for heralded production of non-classical field states that
may be subsequently stored in an atomic quantum memory.Comment: 11 pages, 6 figure
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