Frequencies and modes for shells of revolution (FAMSOR)

Using stiffness matrix and lumped-mass representation specified number of natural frequencies are obtained using inverse iteration method. Mode shapes for each frequency are also obtained. These frequencies and mode shapes can be found in reasonable periods of computer time utilizing this code

Ground Water Contamination: What You Need to Know

14 pages. Contains references

Ground Water Contamination: What You Need to Know

14 pages. Contains references

Specific yield by geophysical logging potential for the Denver basin

Research project technical completion report.Project A-052-COLO, agreement no. 14-34-0001-1106, 14-34-0001-2106; partially funded by the U.S. Dept. of the Interior as authorized by the Water Research and Development Act of 1978

Infiltration affected by flow of air

May 1971.Bibliography: pages 31-32

Stochastic nonlinear differential equation generating 1/f noise

Starting from the simple point process model of 1/f noise we derive a stochastic nonlinear differential equation for the signal exhibiting 1/f noise in any desirably wide range of frequency. A stochastic differential equation (the general Langevin equation with a multiplicative noise) that gives 1/f noise is derived for the first time. The solution of the equation exhibits the power-law distribution. The process with 1/f noise is demonstrated by the numerical solution of the derived equation with the appropriate restriction of the diffusion of the signal in some finite interval.Comment: 3 figure

Creationist Resistance to Evolution: the Patriarchal Unconscious as the Key

Enlightened scientists and educators everywhere lament the persistence of disbelief in the process of evolution through natural selection, but they have done little to illuminate the psychological basis of this resistance. This neglect unfortunately applies even to psychoanalytic commentators, who, while uncovering oedipal elements in evolutionism, have remained silent about creationism. We believe, however, that psychoanalysis has much to offer toward a solution of the problem of creationism\u27s persistence. In particular, we propose that evolutionary theory stirs a profound fear, rooted in the psychosexual developmental processes characterizing human society thus far, of female power

Semiconductor Noise

Contains a report on a research project

Salt transport in soil profiles with application to irrigation return flow: the dissolution and transport of gypsum in soils

Submitted to Office of Water Research and Technology.Bibliography: pages 85-88.January 1976.Experimental information on the dissolution of gypsum and the subsequent transport of the dissolved species in a soil-water system was obtained by measuring the calcium concentration in the solution phase as a function of time at different positions in columns filled with a soil-gypsum mixture that were leached with distilled water. These gypsum leaching experiments were performed with two different soils for a range of flow rates of the solution phase, solution contents and particle sizes of the gypsum material. The measured concentration-time curves were compared with results from two models, the first based on equilibrium chemical principles and the mixing cell concept and a second based on the one-dimensional convection-dispersion equation combined with a first-order kinetic rate equation describing the gypsum dissolution process. The formulation of the rate equation was based on the hypothesis that the rate of dissolution was proportional to the product of the saturation deficit and a function of the mass of gypsum present in the system. The equations in the kinetic model were solved numerically and a graphical and an optimization procedure were used to determine those values of the kinetic parameters for which the best possible agreement was obtained between the measured concentration-time curves and curves calculated from the kinetic model. It was concluded from the comparison between the experimental data, the mixing cell model and the kinetic model that the dissolution reaction of the gypsum was time dependent and was not controlled by the solubility product relationship, as assumed in the mixing cell model. The qualitative agreement between the kinetic model and the experimental results seems to support the hypothesis used in the formulation of the rate equation.OWRT Project no. A-017-COLO; supported (in part) by funds provided by the U. S. Department of the Interior, Office of Water Research and Technology, as authorized by the Water Resources Research Act of 1964 and pursuant to Grant Agreement Nos. 14-31-0001-3806, 14-31-0001-4006, and 14-31-0001-5006

Semiconductor Noise

Contains research objectives and reports on two research projects