7,245 research outputs found
The Boss-Employee Relationship: Influence on Job Retention
This research paper explores and reveals the dynamic relationship between employees and their bosses as this relationship influences retention. Employee unhappiness has been cited as a common reason that an employee may leave his or her job; but unfortunately, a boss does not often realize that it is his or her own management style which may cause a valued employee to quit. Bosses who fail to retain their staff, end up costing the company anywhere from 90% to 200% of that employee’s annual salary. A primary conclusion of this research is that managers need to be educated; they are the link between a high potential employee staying or leaving the job. Managers have a large impact on their employees’ attitude toward their jobs, and their relationship with the employees remains the single greatest reason why employees leave organizations
Field theoretic description of the abelian and non-abelian Josephson effect
We formulate the Josephson effect in a field theoretic language which affords
a straightforward generalization to the non-abelian case. Our formalism
interprets Josephson tunneling as the excitation of pseudo-Goldstone bosons. We
demonstrate the formalism through the consideration of a single junction
separating two regions with a purely non-abelian order parameter and a sandwich
of three regions where the central region is in a distinct phase. Applications
to various non-abelian symmetry breaking systems in particle and condensed
matter physics are given.Comment: 10 pages no figure
The mean field infinite range p=3 spin glass: equilibrium landscape and correlation time scales
We investigate numerically the dynamical behavior of the mean field 3-spin
spin glass model: we study equilibrium dynamics, and compute equilibrium time
scales as a function of the system size V. We find that for increasing volumes
the time scales increase like . We also present an
accurate study of the equilibrium static properties of the system.Comment: 6 pages, 9 figure
f_K/f_pi in Full QCD with Domain Wall Valence Quarks
We compute the ratio of pseudoscalar decay constants f_K/f_pi using
domain-wall valence quarks and rooted improved Kogut-Susskind sea quarks. By
employing continuum chiral perturbation theory, we extract the Gasser-Leutwyler
low-energy constant L_5, and extrapolate f_K/f_pi to the physical point. We
find: f_K/f_pi = 1.218 (+- 0.002) (+0.011 -0.024) where the first error is
statistical and the second error is an estimate of the systematic due to chiral
extrapolation and fitting procedures. This value agrees within the
uncertainties with the determination by the MILC collaboration, calculated
using Kogut-Susskind valence quarks, indicating that systematic errors arising
from the choice of lattice valence quark are small.Comment: 14 pages, 9 figure
Interaction between vortices in models with two order parameters
The interaction energy and force between widely separated strings is analyzed
in a field theory having applications to superconducting cosmic strings, the
SO(5) model of high-temperature superconductivity, and solitons in nonlinear
optics. The field theory has two order parameters, one of which is broken in
the vacuum (giving rise to strings), the other of which is unbroken in the
vacuum but which could nonetheless be broken in the core of the string. If this
does occur, there is an effect on the energetics of widely separated strings.
This effect is important if the length scale of this second order parameter is
longer than that of the other fields in the problem.Comment: 11 pages, 3 figures. Minor changes in the text. Accepted for
publication in Phys. Rev.
Cohomology of skew-holomorphic Lie algebroids
We introduce the notion of skew-holomorphic Lie algebroid on a complex
manifold, and explore some cohomologies theories that one can associate to it.
Examples are given in terms of holomorphic Poisson structures of various sorts.Comment: 16 pages. v2: Final version to be published in Theor. Math. Phys.
(incorporates only very minor changes
How does iron interact with sporopollenin exine capsules? An X-ray absorption study including microfocus XANES and XRF imaging
Sporopollenin exine capsules (SECs) derived from plant spores and pollen grains have been proposed as adsorption, remediation and drug delivery agents. Despite many studies there is scant structural data available. This X-ray absorption investigation represents the first direct structural data on the interaction of metals with SECs and allows elucidation of their structure–property relationships. Fe K-edge XANES and EXAFS data have shown that the iron local environment in SECs (derived from Lycopodium clavatum) reacted with aqueous ferric chloride solutions is similar to that of ferrihydrite (FeOOH) and by implication ferritin. Fe Kα XRF micro-focus experiments show that there is a poor correlation between the iron distribution and the underlying SEC structure indicating that the SEC is coated in the FeOOH material. In contrast, the Fe Kα XRF micro-focus experiments on SECs reacted with aqueous ferrous chloride solutions show that there is a very high correlation between the iron distribution and the SEC structure, indicating a much more specific form of interaction of the iron with the SEC surface functional groups. Fe K-edge XANES and EXAFS data show that the FeII can be easily oxidised to give a structure similar to, but not identical to that in the FeIII case, and that even if anaerobic conditions are used there is still partial oxidation to FeIII
Morphology of the tropopause layer and lower stratosphere above a tropical cyclone : a case study on cyclone Davina (1999)
During the APE-THESEO mission in the Indian Ocean the Myasishchev Design Bureau stratospheric research aircraft M55 Geophysica performed a flight over and within the inner core region of tropical cyclone Davina. Measurements of total water, water vapour, temperature, aerosol backscattering, ozone and tracers were made and are discussed here in comparison with the averages of those quantities acquired during the campaign time frame. Temperature anomalies in the tropical tropopause layer (TTL), warmer than average in the lower part and colder than average in the upper TTL were observed. Ozone was strongly reduced compared to its average value, and thick cirrus decks were present up to the cold point, sometimes topped by a layer of very dry air. Evidence for meridional transport of trace gases in the stratosphere above the cyclone was observed and perturbed water distribution in the TTL was documented. The paper discuss possible processes of dehydration induced by the cirrus forming above the cyclone, and change in the chemical tracer and water distribution in the lower stratosphere 400–430 K due to meridional transport from the mid-latitudes and link with Davina. Moreover it compares the data prior and after the cyclone passage to discuss its actual impact on the atmospheric chemistry and thermodynamics
On the distribution of barriers in the spin glasses
We discuss a general formalism that allows study of transitions over barriers
in spin glasses with long-range interactions that contain large but finite
number, , of spins. We apply this formalism to the Sherrington-Kirkpatrick
model with finite and derive equations for the dynamical order parameters
which allow ''instanton'' solutions describing transitions over the barriers
separating metastable states. Specifically, we study these equations for a
glass state that was obtained in a slow cooling process ending a little below
and show that these equations allow ''instanton'' solutions which erase
the response of the glass to the perturbations applied during the slow cooling
process. The corresponding action of these solutions gives the energy of the
barriers, we find that it scales as where is the reduced
temperature.Comment: 8 pages, LaTex, 2 Postscript figure
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