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Full-Text Articles in Education

A Study Of Long Time Behavior Of Aqueous Solution Of Polyethylene Oxide (Peo) And Aqueous Salt (Potassium Sulfate) Solution Of Peo Using Dynamic Light Scattering, Ziyi Hu Jan 1991

A Study Of Long Time Behavior Of Aqueous Solution Of Polyethylene Oxide (Peo) And Aqueous Salt (Potassium Sulfate) Solution Of Peo Using Dynamic Light Scattering, Ziyi Hu

UNLV Retrospective Theses & Dissertations

This work involves the study of the long time behavior of dilute aqueous solutions of polyethylene oxide (PEO) and the properties of dilute aqueous salt (K{dollar}\sb2{dollar}SO{dollar}\sb4{dollar}) solutions of PEO by using the dynamic light scattering technique; The long time study measurement results indicated that the values of the polydispersity factor and the mutual diffusion coefficient of the PEO particles of the solutions changed very slowly. The analysis of the measured data implied that the aggregation of PEO in a dilute aqueous solution might not be an inherent property of the solution, and the ...


A Multisubband Self-Consistent Two-Dimensional Numerical Model For Hemt Including Intersubband And Intrasubband Scattering Mechanisms In The Quantum Well, Helen Arman Jan 1991

A Multisubband Self-Consistent Two-Dimensional Numerical Model For Hemt Including Intersubband And Intrasubband Scattering Mechanisms In The Quantum Well, Helen Arman

UNLV Retrospective Theses & Dissertations

The previous one-subband model is extended to include transport of electrons in the quantum well with two subbands. The two higher moments of Boltzmann Transport Equations are solved for the two lowest subbands and the bulk system. The Schrodinger's and Poisson's Equations are solved self-consistently. The wavefunctions obtained are used to calculate the ionized impurity and the polar optical-phonon scattering mechanisms. The scattering rates obtained are in good agreement with those reported by Yokoyama and Hess. Coupling terms between the two subbands in the quantum well and the bulk system are derived from the scattering rates; We obtain ...


A Profile Of The Secondary Principalship In The Clark County School District With Recommendations For Intra-District And District-University Articulation, Roberta L Holton Jan 1991

A Profile Of The Secondary Principalship In The Clark County School District With Recommendations For Intra-District And District-University Articulation, Roberta L Holton

UNLV Retrospective Theses & Dissertations

The study described the principalship involving perceptions of instruction, educational programs, and assistant principals' responsibilities, in the secondary schools of the Clark County School District; Compared for similarities and differences between junior and senior high C.C.S.D. principals, and a 1988 national survey of 716 high school administrators, the resultant data was used to suggest training and educational planning within the Clark County School District and the University of Nevada, Las Vegas; The research utilized descriptive statistics to profile and compare Clark County School District secondary school principals to the 1988 National Association of Secondary School Principals survey ...


A Comparative Analysis Of Human Skeletal Remains From Parowan Fremont, Virgin Anasazi, And Kayenta Anasazi Archaeological Sites, Heidi Roberts Jan 1991

A Comparative Analysis Of Human Skeletal Remains From Parowan Fremont, Virgin Anasazi, And Kayenta Anasazi Archaeological Sites, Heidi Roberts

UNLV Retrospective Theses & Dissertations

Human skeletal remains from the prehistoric Parowan Fremont, Virgin Anasazi, and Kayenta Anasazi cultural traditions are examined, to quantify differences in skeletal parameters and burial practices. Statistical comparisons show no significant differences in skeletal metric traits among the 125 individuals studied; While most individuals examined were healthy, the prevalence of periostitis, osteitis, and linear enamel hypoplasia was found to be highest among Virgin Anasazi individuals. Two other pathologies, porotic hyperostosis and cribra orbitalia, were most common among the Kayenta sample and least among the Parowan Fremont sample; From literature review and new data, much variability was found in mortuary practices ...


Today's Racism And Black Frustrations, Ernest Elmo Clark Jan 1991

Today's Racism And Black Frustrations, Ernest Elmo Clark

UNLV Retrospective Theses & Dissertations

This Ethics and Policy Studies project is about America's present attitudes and policies towards blacks, and their frustrations because of racism. I intend to analyze the structure and operation of racism, and how it frustrates black Americans. Particular attention will be directed towards the pluses and minuses of black progress in America, as blacks became an integral part of Western culture; Will blacks be (across the board) accepted in American society, and if so, when? Of what must the moral and legal climate for a full citizenship be comprised? The problem is that racist and prejudicial acts still exist ...


Abusive Parenting Attitudes In Parent Training Subgroups, Jacqueline Ann Harris Jan 1991

Abusive Parenting Attitudes In Parent Training Subgroups, Jacqueline Ann Harris

UNLV Retrospective Theses & Dissertations

The present study examines the abusive parenting attitudes of three subject populations (self-referred, abusive, and custody) in a parent training group. All subjects were administered the Adult-Adolescent Parenting Inventory (AAPI) before and after the parenting group. The hypothesis that all groups would make gains on the AAPI following the parent training intervention was not supported, with the exception of one AAPI construct (family roles) for the abusive subjects. It was revealed that the self-referred and custody groups' scores were similar, both pre and post, on the AAPI. However, the abusive population differed from the other two groups, both pre and ...


Virtual Time Synchronization In Distributed Database Systems, Timothy E Lemaster Jan 1991

Virtual Time Synchronization In Distributed Database Systems, Timothy E Lemaster

UNLV Retrospective Theses & Dissertations

Distributed systems synchronized by Virtual Time have been topics of recent interest. Virtual Time follows an optimistic philosophy relying on rollback for synchronization instead of abortion or blocKing Although many applications have been suggested as candidates for Virtual Time, few were simulated or implemented. This research reports on the first implementation and results of a Distributed Database Management System synchronized by virtual time. We argue that virtual time is a viable alternate concurrency control method for distributed database systems if its memory overhead can be absorbed.


An Assessment Of A Motivational Environment As Viewed By Dealers In The Casino Industry, Richard Joseph Darder Jan 1991

An Assessment Of A Motivational Environment As Viewed By Dealers In The Casino Industry, Richard Joseph Darder

UNLV Retrospective Theses & Dissertations

An analysis of dealers' motivational working environment was conducted at three Las Vegas casinos in order to suggest possible methods for improving the dealers' motivational working environment. Content and process theories of motivation, management theories, and previous studies on motivational environments are reviewed; The results of three casino surveys are presented. Dealers' attitudes were assessed through a motivational-hygiene survey questionnaire. The supervisors' perception of the dealers' attitudes were also assessed and compared. Both the dealers' and supervisors' survey results were compared to previous studies of general industry and hospitality employees. Dealers exhibited different attitudes than employees of previous studies. Recommendations ...


The Relationship Between Test Anxiety And Academic Performance Of Untreated Test Anxious College Students, Joanmarie Christine Vlach-Kolesar Jan 1991

The Relationship Between Test Anxiety And Academic Performance Of Untreated Test Anxious College Students, Joanmarie Christine Vlach-Kolesar

UNLV Retrospective Theses & Dissertations

The relationship between test anxiety and academic performance was determined for a sample of fifty-three college students. Classroom examination scores and measures of preterm and postterm self-reported anxiety were collected to test the basic assumptions: (a) that there is a relationship between test anxiety and academic performance; (b) that test anxiety has a debilitating effect on academic performance; (c) to investigate if academic performance changes for test anxious subjects without treatment; and (d) if untreated test anxiety will decline over the course of a semester. The results were consistent with general findings that there is a significant negative correlation between ...


An Investigation Of Photon Correlation Spectroscopy Data Analysis Packages "Discrete" And "Contin" Using The Schulz-Zimm Distribution, Usman Abdul Aziz Qazi Jan 1991

An Investigation Of Photon Correlation Spectroscopy Data Analysis Packages "Discrete" And "Contin" Using The Schulz-Zimm Distribution, Usman Abdul Aziz Qazi

UNLV Retrospective Theses & Dissertations

DISCRETE and CONTIN are standard data analysis packages used in Photon Correlation Spectroscopy for inversion of noisy autocorrelation functions. Their resolution was studied using simulated autocorrelation data based on the Schulz-Zimm distribution of polymer radii; Autocorrelation functions with various noise levels were fitted to both programs. The CONTIN output was compared with the original distribution. Autocorrelation functions calculated for broader distributions of radii yielded correspondingly broader functions in the radius space. Features like the skewness of the original Schulz-Zimm distribution were not recovered except in the case of narrow, approximately monodisperse radius distributions. Addition of noise was not found to ...


The Political Economy Of Iran: A Conceptual, Theoretical And Historical Analysis, Stacey Whitmore Hanlon Jan 1991

The Political Economy Of Iran: A Conceptual, Theoretical And Historical Analysis, Stacey Whitmore Hanlon

UNLV Retrospective Theses & Dissertations

This thesis is a case study of the political economy of Iran from 1963 to the present. It analyzes the interactions of the political and economic spheres, and the effects of those interactions on political development within Iran. For Political development is viewed in terms of a system's capacity to respond to economic and political demands placed upon it by the population. Various theories of political economy are reviewed in the first chapter, and their applicability to Iran's system is discussed throughout the work. The interaction between existing economic and political systems in Iran, their transformation over time ...


The Effectiveness Of Psychotherapeutic Intervention In The Reduction Of Client Symptoms In An Employee Assistance Program, Judy Irene Seymore Jan 1991

The Effectiveness Of Psychotherapeutic Intervention In The Reduction Of Client Symptoms In An Employee Assistance Program, Judy Irene Seymore

UNLV Retrospective Theses & Dissertations

The primary purpose of the current study was to determine the efficacy of short-term therapy in the reduction of symptoms and overall emotional distress for clients seeking help through a privately contracted Employee Assistance Program (EAP). A review of EAP literature is presented as well as research findings related to psychotherapeutic outcome studies. Clients' noncompliance in returning Post and Follow-up assessments resulted in a small sample size. For clients who returned Post and Follow-up assessments, results indicate that short-term psychotherapy offered in the EAP was effective in reducing symptoms and emotional distress for clients who received therapy. Methodological problems encountered ...


The Effect Of Music Therapy On Intensive Care Patients, Nita L Johnson Jan 1991

The Effect Of Music Therapy On Intensive Care Patients, Nita L Johnson

UNLV Retrospective Theses & Dissertations

This investigation studied both the patient's physiological and emotional responses to taped music programs in Intensive Care Units. The experimental group (n = 26) selected and listened to taped music through earphones, and the control group (n = 25) wore earphones connected to recorders without music. Physiological parameters of heart rate, blood pressure, and mean arterial pressure were recorded before and after a 30 minute experimental period, as well as the patients' emotional responses. The tests used for testing the difference between physiological parameters taken pre-treatment and those taken post-treatment revealed no significant difference between the experimental group and the control ...


The Effects Of Economic Recession On Community, Linda Kay Roe Jan 1991

The Effects Of Economic Recession On Community, Linda Kay Roe

UNLV Retrospective Theses & Dissertations

This research project was designed to examine the effects changes in economic conditions--notably, changes which occurred during the recession of the early 1980s--have had on patterns of social interaction in rural, specifically mining-dependent communities. The study was conducted in two communities located in Northeastern Minnesota during the spring of 1990. Data were gathered via a mailed questionnaire, which was developed to assess patterns of social interaction before, during, and after the recession. The analysis showed both communities experienced an increase in orientation toward extracommunity systems over the three periods. Age was specified as a condition which affected changes in perception ...


The Exploitation Of Pipeline Parallelism By Compile Time Dataflow Analysis, Joseph Michael Lombardo Jan 1991

The Exploitation Of Pipeline Parallelism By Compile Time Dataflow Analysis, Joseph Michael Lombardo

UNLV Retrospective Theses & Dissertations

The automatic and implicit transformation of sequential instruction streams, which execute efficiently for pipelined architectures is the subject of this paper. This paper proposes a method which maximizes the parallel performance of an instruction pipeline by detecting and eliminating specific pipeline hazards known as resource conflicts. The detection of resource conflicts is accomplished with data dependence analysis, while the elimination of resource conflicts is accomplished by instruction stream code transformation. The transformation of instruction streams is guided by data dependence analysis, and dependence graphs. This thesis is based on the premise that the elimination of resource conflicts is synonymous with ...


The Historical Origins Of The American Peace Test, David Leon Mann Jan 1991

The Historical Origins Of The American Peace Test, David Leon Mann

UNLV Retrospective Theses & Dissertations

This thesis explains the historical origins of the anti-nuclear protest group, the American Peace Test (APT), which has focused its activities at the Nevada Test Site. This study concludes that interest in direct action was evident during the 1983-1984 Direct Action Framework Period within the Nuclear Weapons FREEZE Campaign. This interest became more tangible with a call to the Nevada Desert Experience (NDE) group in May of 1985 requesting to participate in an action. That interest was then amplified and validated at that August NDE action. The first APT action was then organized for October and November. At the Annual ...


The Income Gap And Symphony Orchestras, Joseph Anthony Volpi Jan 1991

The Income Gap And Symphony Orchestras, Joseph Anthony Volpi

UNLV Retrospective Theses & Dissertations

Symphony orchestras are the supposed victims of a malignant disease entitled "Baumol's Disease" which occurs as costs rise at a faster rate than earned income. The gap between earned income and costs is called the "Income Gap." The remedy is injections of cash to stop the disease from expanding; This thesis takes actual data from the American Symphony Orchestra League and tests Baumol's diagnosis. The income gap does exist and it is growing over time; To determine if the income gap is an incurable disease, a more comprehensive model is designed including output composition variables, demographic variables, and ...


The Influence Of Diet On Growth Rate, Thyroid Hormone Output, And Thermoregulation In Laboratory White Rats, Linda Susan Vanden Heuvel Jan 1991

The Influence Of Diet On Growth Rate, Thyroid Hormone Output, And Thermoregulation In Laboratory White Rats, Linda Susan Vanden Heuvel

UNLV Retrospective Theses & Dissertations

The physiological effects of the consumption of diets varying in protein and calorie content was assessed using young male Sprague-Dawley rats. Food intake (FI), water intake (WI), body weight (BW), rectal temperature (Tre), oxygen consumption (VO{dollar}\sb2{dollar}), hematocrit (Hct), Hemoglobin (Hb), plasma protein concentration (PP), and plasma levels of thyroxine (T{dollar}\sb4{dollar}), triiodothyronine (T{dollar}\sb3{dollar}), free thyroxine index (FT{dollar}\sb4{dollar}), and thyroid stimulating hormone (TSH) were measured. Food intake expressed per g BW was highest in the LP (5% protein) diet group, but body weight gain was the lower in the LP ...