Theoretical Cross Section for Light Scattering from Superfluid Helium-4 (open access)

Theoretical Cross Section for Light Scattering from Superfluid Helium-4

The finite lifetime of the bound roton pair is included in the theoretical light scattering cross section to explain the shape of the peak in the observed Raman light scattering cross section in He II. A model Hamiltonian is used to describe interactions between quasiparticles for the helium system. The equation of motion for the bound roton pair state, which is taken to be a collective mode of quasiparticle pairs, is solved. The cross section for light scattering is then derived using Fermi's Golden Rule with the bound roton pair as the final state. Since the bound roton pair can decay into two free phonons, a phenomenological width r is included in the cross section. The peak position and shape of the observed cross section are both fitted using a binding energy of εB = 0.37 K for the bound roton pair.
Date: May 1976
Creator: Latham, W. Peters, Jr., 1948-2016.
System: The UNT Digital Library
Population Genetics, Karyology, and Morphology of Certain Species of the Peromyscus Truei Group (open access)

Population Genetics, Karyology, and Morphology of Certain Species of the Peromyscus Truei Group

The systematic relationship of two species of the Peromyscus truei group (P. truei and P. difficilis) was analysed through the application of starch gel electrophoresis, numerical taxonomy, and chromosomal techiques. Of 20 loci examined, 11 were monomorphic in all populations, two exhibited variation in only two populations, and seven loci were polymorphic in two or more populations. The mean number of polymorphic loci per population was 0.186, the mean number of polymorphic loci per individual was 0.024, and the proportion of loci heterozygous per individual was 2.4%. Chromosomal forms of P. truei, P. t. gentilis (FN 54) and P. t. truei (FN 62), and P. difficilis, P. d. petricola (FN 56) and P. d. nasutus (FN 58), were consistent for their karyotypes throughout their geographic ranges. No chromosomal hybrids were detected. Numerical analysis of morphological characters and similarity values based on allelic frequencies utilizing Roger's coefficient (S) demonstrated a distinct seperation of karyotypic forms of P. truei (S = 0.902) and P. difficilis (S = 0.924) and were below the mean value of S for conspecifics (S = 0.950). All data indicates that each chromosomal form of the P. truei group examined represents four distinct species. The oldest available name …
Date: May 1976
Creator: Hart, Billy Joe
System: The UNT Digital Library
An Analysis of the Effect of Inertial Factors on Productivity and Satisfaction (open access)

An Analysis of the Effect of Inertial Factors on Productivity and Satisfaction

This research was designed to investigate whether or not there are significant positive relationships between the total number of reasons production employees cite for staying with an industrial firm and measures of both job performance and job satisfaction. In addition, this study sought relationships between employee work values and both job performance and job satisfaction. Significant positive correlations have been established for tribalistic and existential values with production worker job performance. Further, significant positive correlations were shown for conformist values, and negative correlations for manipulative values with both job satisfaction and with the total number of reasons cited for staying with the firm. This study gives support to a situational theory of work motivation in which both job performance and satisfaction are dependent on the strength of employee job inertia.
Date: May 1976
Creator: Marcin, Edward R.
System: The UNT Digital Library
Spectroscopic Investigation of Some Allyl Alkali Metal Compounds (open access)

Spectroscopic Investigation of Some Allyl Alkali Metal Compounds

To gain better understanding of the nature of the carbonmetal bonding in 3-neopentylallyl alkali metal (5,5-dimethyl- 2-hexenyl alkali metal) systems, an investigation is extended to 3-neopentylallylpotassium. In addition, pertinent data on the 3-neopentylallyl systems are re-examined in an attempt to understand the trends in the bonding habits, as affected by the solvent, the cation and the temperature.
Date: May 1976
Creator: Moore, Michael L.
System: The UNT Digital Library
A Study of Job Performance and Related Factors of the Mentally Retarded Student (open access)

A Study of Job Performance and Related Factors of the Mentally Retarded Student

The problem of this study was to investigate the relationship of the variables of impulse control, adaptive behaviors, responsible behaviors, intelligence, and duration of institutionalization to job performance of the mentally retarded student at the Denton State School, Denton, Texas. The purposes of this study were 1. to ascertain the correlation of the variables of adaptive behaviors, responsible behaviors, impulse control, duration of institutionalization and intelligence quotient to job performance of the mentally retarded student at the Denton State School; 2. to determine which factor or combination of factors would be most useful for predicting job performance effectiveness of the mentally retarded student. It was concluded that of those variables included in this study, intelligence quotient was the best single predictor of job performance. The combination which was found to be the best predictor of job performance was impulse control and intelligence quotient. The variables included in this study (adaptive behaviors, impulse control, responsible behaviors, intelligence quotient, and duration of institutionalization), taken either singly or in combination, do not correlate highly enough with job performance to be of much value for predicting job performance.
Date: May 1976
Creator: Lucchelli, Gilbert James
System: The UNT Digital Library
Investigation into the Nature of b-d Confusion Among Selected Samples of Elementary Children (open access)

Investigation into the Nature of b-d Confusion Among Selected Samples of Elementary Children

The problem explored by this study is the nature of b-d confusion as it is exhibited by remedial and nonremedial readers at various elementary ages in the areas of letter identification, spelling, and reading. The purposes of Phase I of the study were to examine the progressive phase-out of b-d errors committed by samples of remedial and nonremedial readers and to explore certain factors that could be related to the problem. The object of Phase II was to describe subjects with extreme b-d reversal problems. Extreme b-d reversers were found to have been average or below on first-grade-readiness scores and significantly below grade-level placement in reading achievement. School marks were also generally low. As a whole, the extremes were predominantly right-handed and no sex bias was detected. When the extremes were compared to subjects above average in b-d responses, the extremes made significantly more errors on other letters, were able to read significantly fewer words, and required significantly more assistance in spelling. These groups significantly differed on position of b-d reversals in reading, but not in spelling, nor on the proportion of real words actually produced when reversals were made in reading. Reversal of b and d was not associated …
Date: May 1976
Creator: Merwin, Marjorie Ann
System: The UNT Digital Library
The Establishment of Criteria for Selection, Reappointment and Promotion of Faculty in Baccalaureate Schools of Nursing (open access)

The Establishment of Criteria for Selection, Reappointment and Promotion of Faculty in Baccalaureate Schools of Nursing

The purpose of this study was to produce functional criteria that could be used for the initial selection, reappointment and promotion of faculty in baccalaureate schools of nursing. The establishment of the criteria was derived from a tentative criteria that was developed from seventeen research questions. The review of nursing and related literature was conducted to focus on and to justify the tentative criteria. It was presented under the following categories: faculty selection, reappointment and promotion; academic preparation of nurse faculty; nursing research; and continuing education in nursing. The data indicated that a master's degree in a clinical nursing specialty is the minimum academic preparation for faculty in baccalaureate schools of nursing. There was a strong indication from the data that a doctoral degree in nursing will be the expected future academic preparation of collegiate nursing faculty. Continuing education, research, publication, and community service were given a high priority as criteria for reappointment and promotion. The criterion regarding work experience during the summer in a clinical practice setting is currently not given consideration, if any, for reappointment and promotion. However, it was given more consideration as one of the criteria that should be utilized in reappointment and promotion.
Date: May 1976
Creator: Hughes, Samuel Thomas
System: The UNT Digital Library
A Comparative Analysis of the Writings of John Dewey and B. F. Skinner as They Relate to the Development of a Technology of Teaching (open access)

A Comparative Analysis of the Writings of John Dewey and B. F. Skinner as They Relate to the Development of a Technology of Teaching

The problem of this study was to effect a comparative study of B. F. Skinner and John Dewey with respect to the development of a technology of teaching. The purposes of this study were to analyze and compare the writings of Dewey and Skinner as they relate to the development of a technology of teaching, to synthesize the findings of this analysis and comparison and direct it to the technology of teaching, and to create and enumerate new insights into the teaching phenomena. The procedures for completing the study were based upon the selection of four basic constructs which allowed a framework on which to hang a comparative study of B. F. Skinner and John Dewey as their writings related to the development of a technology of teaching. These constructs were (1) naturalism and the scientific point of view; (2) knowledge and experience; (3) evolution and control of culture; and (4) the philosophy of education as it relates to the technology of teaching. The methods used to complete the study were the analysis and synthesis of Dewey's and Skinner's writings and their relative positions to the four constructs mentioned were shown. Other authorities were also consulted in hopes that the …
Date: May 1976
Creator: McCain, Harry B.
System: The UNT Digital Library
A Classical Theory of the Dielectric Susceptibility of Anharmonic Crystals (open access)

A Classical Theory of the Dielectric Susceptibility of Anharmonic Crystals

An expression for the dielectric susceptibility tensor of a cubic ionic crystal has been derived using the classical Liouville operator. The effect of cubic anharmonic forces is included as a perturbation on the harmonic crystal solution, and a series expansion for the dielectric susceptibility is developed. The most important terms in the series are identified and summed, yielding an expression for the complex susceptibility with an anharmonic contribution which is linearly dependent on temperature. A numerical example shows that both the real and imaginary parts of the susceptibility are continuous, finite functions of frequency.
Date: May 1976
Creator: Kennedy, Howard V.
System: The UNT Digital Library
Institutionalized versus non-institutionalized mildly retarded populations: determination and comparison, based on Rotter's personal control theory, and a test of interpersonal distance (open access)

Institutionalized versus non-institutionalized mildly retarded populations: determination and comparison, based on Rotter's personal control theory, and a test of interpersonal distance

The problem with which this study was concerned was that of evaluating and comparing of locus of control scores and interpersonal distance among the institutionalized and non-institutionalized mildly retarded populations. The hypothetical assumptions specifically stated that the institutionalized retardates will be more externally oriented, will show a greater interpersonal distance towards stimuli with no specific expectancies. In view of the findings of the study, the following recommendations are offered: 1. Determination and evaluation of locus of control in retardates may be a useful technique in assessing their personality and understanding their psychological needs. Several investigators have been attempted with neurotics and subjects with character disorders, but none is reported with retarded populations. Such information may contribute to planning and programming for this particular group. 2. Determination of the retardates' interpersonal space may be an important approach in assessing their personality structure. Such studies have been conducted with the emotionally disturbed children, schizophrenics and normal subjects; however, none has been conducted with retardates. 3. The instruments used for this study have been designed for and standardized on samples of normal populations. To achieve more accurate results, these instruments should be designed for and standardized on a sample consisting of retarded subjects. …
Date: May 1976
Creator: Moazami, Manoutchehr
System: The UNT Digital Library