Nebraska residential propane survey, Winter 1991/92 (open access)

Nebraska residential propane survey, Winter 1991/92

This report summarizes information on propane prices for the October 1991/March 1992 heating season in Nebraska. From October through March participating propane distributors were contacted twice monthly by the Nebraska Energy Office to obtain their current residential (retail) prices of propane. This information was faxed to the US Department of Energy, Energy Information Administration (DOE/EIA) biweekly in report format as prepared by the PEDRO system.
Date: June 26, 1992
Creator: Kinyon, L.
System: The UNT Digital Library
Predictions of a non-Gaussian model for large scale structure (open access)

Predictions of a non-Gaussian model for large scale structure

A modified CDM model for the origin of structure in the universe based on an inflation model with two interacting scalar fields, is analyzed to make predictions for the statistical properties of the density and velocity fields and the microwave background anisotropy. The initial gauge-invariant potential {zeta} which is defined as {zeta} = {delta}{rho}/({rho} + p) + 3{var_phi}, where {var_phi} is the curvature perturbation amplitude and p is the pressure, is the sum of a Gaussian field {phi}{sub 1}, and the square of a Gaussian field {phi}{sub 2}. A Harrison-Zel`dovich scale-invariant power spectrum is assumed for {phi}{sub 1}; and a log-normal `peak` power spectrum for {phi}{sub 2}. The location and the width of the peak are described by parameters k{sub c} and a. respectively. The model is motivated to some extent by inflation models with two interacting scalar fields, but is mainly interesting as an example of a model whose statistical properties change with scale. On small scales, it is almost identical to a standard scale-invariant Gaussian CDM model. On scales near the location of the peak of the non-Gaussian field, the distributions have long tails in high positive values of the density and velocity fields. Thus, it is easier …
Date: June 26, 1992
Creator: Fan, Z. H. & Bardeen, J. M.
System: The UNT Digital Library
Nebraska residential propane survey, Winter 1991/92. Final report (open access)

Nebraska residential propane survey, Winter 1991/92. Final report

This report summarizes information on propane prices for the October 1991/March 1992 heating season in Nebraska. From October through March participating propane distributors were contacted twice monthly by the Nebraska Energy Office to obtain their current residential (retail) prices of propane. This information was faxed to the US Department of Energy, Energy Information Administration (DOE/EIA) biweekly in report format as prepared by the PEDRO system.
Date: June 26, 1992
Creator: Kinyon, L.
System: The UNT Digital Library
Predictions of a Non-Gaussian Model for Large Scale Structure (open access)

Predictions of a Non-Gaussian Model for Large Scale Structure

A modified CDM model for the origin of structure in the universe based on an inflation model with two interacting scalar fields, is analyzed to make predictions for the statistical properties of the density and velocity fields and the microwave background anisotropy. The initial gauge-invariant potential [zeta] which is defined as [zeta] = [delta][rho]/([rho] + p) + 3[var phi], where [var phi] is the curvature perturbation amplitude and p is the pressure, is the sum of a Gaussian field [phi][sub 1], and the square of a Gaussian field [phi][sub 2]. A Harrison-Zel'dovich scale-invariant power spectrum is assumed for [phi][sub 1]; and a log-normal 'peak' power spectrum for [phi][sub 2]. The location and the width of the peak are described by parameters k[sub c] and a. respectively. The model is motivated to some extent by inflation models with two interacting scalar fields, but is mainly interesting as an example of a model whose statistical properties change with scale. On small scales, it is almost identical to a standard scale-invariant Gaussian CDM model. On scales near the location of the peak of the non-Gaussian field, the distributions have long tails in high positive values of the density and velocity fields. Thus, it …
Date: June 26, 1992
Creator: Fan, Z. H. & Bardeen, J. M.
System: The UNT Digital Library