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Population ecology of the cottontail rabbit, Sylvilagus floridanus, on the Welder Wildlife Refuge, South Texas
(1969)
The study was conducted in a transitional zone between the Gulf Prairies and Marshes, and the South Texas Plains. In its present state, the area is a brush-grass complex. The rabbits are members of the Sylvilagus floridanus ...
Recency of secondary school mathematical preparation as an influence on first-year college mathematics achievement
(1969)
Statement of Problem [line break] The basic purpose of this study was to determine the effect that recency of mathematical preparation in secondary school has upon achievement in first-year college mathematics courses. ...
Polynomial forecasting utilizing exponential smoothing on successive coefficient determinations
(1969)
Economic forecasting techniques are being successfully applied to problems of inventory and production control. Literature on this subject is generally divided into two classifications: the first being a qualitative approach ...
Experimental investigation of the thermomagnetic torque effect in dilute hydrogen
(1969)
An investigation of the thermomagnetic torque, or Scott effect, has been carried out in several concentrations of ortho and para-hydrogen. Measurements were made with a sensitive torsion pendulum over a range of temperatures ...
Inheritance of resistance to crown rust and certain morphological traits in crosses involving Avena sterilis L. and methods of breaking seed dormancy in oats
(1969)
Six strains of A. sterilis introduced form Israel as breeding sources of crown rust of oats were crossed with a very susceptible variety Frazier. The number of genes conditioning resistance in the 6 strains was determined ...
Development of a method for isolation of gram quantities of dissolved organic matter from sea water and some chemical and isotopic characteristics of the isolated material
(1969)
For the first time, gram quantities of dissolved organic matter have been isolated from several thousand liters of sea water with minor contamination. Optimum conditions for the adsorption of the dissolved organic matter ...
The relationship of species development, semen physiology and post mortem evaluations to reproduction in the American pen-raised chinchilla
(1969)
A literature review tracing the evolvement of the American pen-raised chinchilla was conducted; it indicated that there have never been three distinct species of chinchillas in the United States, brevicaudata, lanigera and ...
Selection of regression variables and contributions to the estimation of variance components
(1969)
This dissertation consists of two parts. In Chapter I an efficient procedure is described for identifying best regression subsets. In Chapter II the likelihood functions for the random, nested and random, classification ...
Gene action in intervarietal diallel crosses of upland cotton Gossypium hirsutum L
(1969)
A complete diallel cross consisting of all possible F₁ hybrid combinations among 9 selected cotton varieties and their corresponding F₂'s were studied using a split-plot design with four replications. Data were taken on ...