1,993 research outputs found
Adjustment of Conventional PSE's Methodology for Economy in Transition
The conventional PSE's methodology doesn't provide adequate estimation of agricultural support for the economy in transition. In this paper we attempt to adjust PSE's methodology for Russian economy, and also coefficients' analysis and interpretations are adapted for transitional conditions. Investigation showed that the level of agricultural support in Russia is much lower than conventional methodology estimates.PSE, transition, adjusted methodology, Russia, agriculture, Political Economy,
Living with the Energy Crisis
Discusses measure that can be taken by homeowners to optimize energy conservation and efficiency; includes a seasonal checklist
Markets for Purchased Farm Inputs in Transitional Agriculture: Russia's Example
The common a priori persuasion is that agriculture suffers from decapitalization due to financial constraints faced by producers. This view is the basis for the national agricultural policy, which emphasizes reimbursement of input costs and substitutes government and quasi-government organizations for the missing market institutions. The article evaluates the availability of purchased farm inputs, the efficiency of their use, the main problems in the emergence of market institutions, and the impact of government policies. The analysis focuses on five groups of purchased inputs: farm machinery, fertilizers, fuel, seeds, and animal feed. The information sources include official statistics and data from two original surveys.Russian agriculture, transition economies, farm supply channels, government support programs, Agricultural and Food Policy, Community/Rural/Urban Development, P230, Q180,
Illinois Lo-Cal House
The increasing scarcity of fuels makes it imperativeto include more energy conservation features in our housing.
This circular describes the design, construction, and predicted performance of a house that uses approximately one-third of the energy needed to heat a house of the same size which is built to meet 1974 insulation standards (United States Department of Housing and Urban Development standards for houses located in areas having a heating season of between 4500 and 8000 degree-days). Because of its low-energy requirements for heating, the house has been called the "Illinois Lo-Cal House." If the Lo-Cal House is compared to the typical house of 1950, the savings are even more dramatic.
The two features which account for the exceptional
reduction are:
1) Superior insulation
2) Solar orientation
Of the reduction, about 80% or more is due to the heavy insulation. The remaining reduction is due to the location of most of the windows in the south wall, where they act as solar collectors
On the Coexistence in RuSr2GdCu2O8 of Superconductivity and Ferromagnetism
We review the reasons that make superconductivity unlikely to arise in a
ferromagnet. Then, in light of the report by Tallon and collaborators that
RuSr2GdCu2O8 becomes superconducting at approximately 35 K which is well below
the Curie temperature of 132 K, we consider whether the objections really apply
to this compound. Our considerations are supported by local spin density
calculations for this compound, which indeed indicate a ferromagnetic RuO2
layer. The Ru moment resides in t_2g orbitals but is characteristic of
itinerant magnetism (and is sensitive to choice of exchange-correlation
potential and to the atomic positions). Based on the small exchange splitting
that is induced in the Cu-O layers, the system seems capable of supporting
singlet superconductivity an FFLO-type order parameter and possibly a pi-phase
alternation between layers. If instead the pairing is triplet in the RuO2
layers, it can be distinguished by a spin-polarized supercurrent. Either type
of superconductivity seems to imply a spontaneous vortex phase if the
magnetization is rotated out of the plane.Comment: 3 revtex pages, 2 embedded figures. In press, Proc. HTS99 Conf.,
Miami, 199
Orbital moment of a single Co atom on a Pt(111) surface - a view from correlated band theory
The orbital magnetic moment of a Co adatom on a Pt(111) surface is calculated
in good agreement with experimental data making use of the LSDA+U method. It is
shown that both electron correlation induced orbital polarization and
structural relaxation play essential roles in orbital moment formation. The
microscopic origins of the orbital moment enhancement are discussed
Heat Capacity of the Pressure-induced Superconductivity in Itinerant Ferromagnet UGe
Recently co-existence of the ferromagnetism and superconductivity was
reported in the high-pressure region (1.0-1.6 GPa) in UGe. We performed the
heat capacity measurement on UGe under high pressure. At 1.13 GPa, we found
a peak corresponding to the superconducting transition. The superconducting
temperature and are 0.6 K and 0.25,
respectively. The superconducting transition was also confirmed by the
appearance of the Meissner effect in the {\it ac} susceptibility. From these
results, we confirm a bulk nature of the superconductivity in UGe. The
value of ( 95 mJ/moleK) just above at 1.15 GPa is as
much as 3 times larger than that at ambient pressure, which indicates a large
mass enhancement of quasiparticles under high pressure.Comment: submitted to the International Conference on Strongly Correlated
Electron Systems 200
Coulomb Correlations and Magnetic Anisotropy in ordered CoPt and FePt alloys
We present results of the magneto-crystalline anisotropy energy (MAE)
calculations for chemically ordered CoPt and FePt alloys taking into
account the effects of strong electronic correlations and spin-orbit coupling.
The local spin density + Hubbard U approximation (LSDA+U) is shown to provide a
consistent picture of the magnetic ground state properties when intra-atomic
Coulomb correlations are included for both 3 and 5 elements. Our results
demonstrate significant and complex contribution of correlation effects to
large MAE of these material.Comment: revised version; 4 pages, 2 figure
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