Neutron-capture cross sections of the tungsten isotopes /sup 182/W, /sup 183/W, /sup 184/W, and /sup 186/W from 2. 6 to 2000 keV

Neutron-capture cross sections of four stable tungsten isotopes were measured as a function of energy by time of flight at the Oak Ridge Electron Linear Accelerator. The resolution achieved, ..delta..E/E about 1/750 FWHM, has allowed the analysis of several hundred resonance peaks at energies a few kiloelectron volts above the neutron-binding energy. Strength functions were fitted to the average cross sections up to about 100 keV, and average cross sections were extended with less precision from 100 to 2000 keV. The capture cross section of natural tungsten was calculated from measurements for individual isotopes. Compound nucleus calculations have been made with deformed optical model parameters for comparison with experimental cross sections

A Trinomial Logit Analysis of Household Composition

This article analyzes the effects on the marriage and household composition decisions of characteristics of the householder and of the place of residence. High housing costs reduced the probability of living alone. For female householders, increases in income decreased the probability of living alone rather than with unrelated individuals; the reverse was true for male householders. An increase in income decreased the probability of marriage for female householders over twenty-three years of age and increased the probability of marriage for male householders. Non-white householders over forty were less likely to be married than white householders over forty. Copyright American Real Estate and Urban Economics Association.

On the affordances of the MaxEP principle

Optimality principles have long been popular in the natural sciences and enjoyed much successes in various applications. However these principles seem to be disparate, each applied in limited contexts and there are far too many of them causing some consternation among scientists and philosophers of science regarding the ad-hoc nature of the optimality arguments. In this paper, we discuss the Maximum entropy production (MaxEP) as a plausible over-arching principle to understand stable configurations in fluid mechanics and related problems. The MaxEP being based upon sound physical arguments and in the immutable laws of thermodynamics along with the fact that it has been successfully co-opted across disciplines makes it worthy of attention. We discuss various physical and metaphysical aspects of this principle and use it to analyze some model problems regarding patterns in particle sedimentation such as sedimentation of a particle in Newtonian and non-Newtonian fluids and stable deformation of a falling droplet