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Manipulations Of Task Switches During Acquisition: A Test Of The Elaboration Hypothesis Of Contextual Interference, Carol Helen Aloupis Jan 1995

Manipulations Of Task Switches During Acquisition: A Test Of The Elaboration Hypothesis Of Contextual Interference, Carol Helen Aloupis

UNLV Retrospective Theses & Dissertations

The effects of practice composition on retention performance of motor skills have been investigated by many researchers (e.g., Shea, Kohl, & Indermill, 1990) and the order of task presentation during practice has been determined to be critical in skill retention. Specifically, presenting a subject with several versions of a task typically produces poorer performance during practice but superior performance during retention, relative to a situation in which the same version of the task is presented repeatedly. This concept is known as contextual interference. Typically, it is the switching between task versions that is considered the critical manipulation, while the consistency …

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Development Of An Automated Throw Room And Hvac Component Acoustic Test Systems, Michael Anthony Schwob Jan 1995

Development Of An Automated Throw Room And Hvac Component Acoustic Test Systems, Michael Anthony Schwob

UNLV Retrospective Theses & Dissertations

Two facilities for the testing of commercial and residential HVAC air delivery components were developed for the UNLV Ventilation and Acoustic Systems Technology (VAST) Lab. One facility, referred to as the HVAC Acoustic Test Facility (HCATS), will be used to measure the acoustic characteristics of in-duct and duct terminating components. This system will augment the test facility currently used for in-duct passive silencer testing. The other new facility will be used to rate the air performance of HVAC interior inlets and outlets. This system is commonly referred to as a throw room; HCATS includes a supply air fan and closed …

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A Theoretical Study Of Surface Kinetic Processes In The Mbe Growth Of Compound Semiconductors, Shridhar Gangadhar Bendi Jan 1995

A Theoretical Study Of Surface Kinetic Processes In The Mbe Growth Of Compound Semiconductors, Shridhar Gangadhar Bendi

UNLV Retrospective Theses & Dissertations

The surface kinetics processes in the molecular beam epitaxy (MBE) growth of GaAs (100) and the MBE doping kinetics are studied theoretically, using a stochastic model which is based on the master equation approach and random distribution approximation. The kinetic processes included in the model are: adsorption, surface migration and evaporation. In the study of surface roughening kinetics in GaAs (100), a transition temperature at which time averaged RHEED intensity is maximum was observed. The RHEED intensity increases with temperature till the transition temperature and decreases beyond the transition temperature. The doping studies were performed for various growth conditions. The …

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Prevention Of The Decline Of Marital Satisfaction During The Transition To Parenthood: A Pilot Test Of A Marital Skills Training Workshop, Kelly Michelle Carpenter Jan 1995

Prevention Of The Decline Of Marital Satisfaction During The Transition To Parenthood: A Pilot Test Of A Marital Skills Training Workshop, Kelly Michelle Carpenter

UNLV Retrospective Theses & Dissertations

Previous research has indicated that couples typically experience a decline in marital adjustment during the year after their first baby is born. This study was designed to investigate the effectiveness of the Prevention Relationship Enhancement Program (PREP{dollar}\rm \sp{TM}{dollar}), a research-based marital skills workshop, in preventing this decline in marital adjustment; Participants were 70 married couples expecting their first child. All participants completed the Dyadic Adjustment Scale (DAS), Marital Instability Index (MII), and the Communication Patterns Questionnaire (CPQ). The couples were randomly assigned to one of two groups: Workshop or control. Couples in the workshop group were invited to attend a …

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Dangerous Women, Dangerous Times: Women At The Nevada State Prison, 1890-1930, Donna Crail-Rugotzke Jan 1995

Dangerous Women, Dangerous Times: Women At The Nevada State Prison, 1890-1930, Donna Crail-Rugotzke

UNLV Retrospective Theses & Dissertations

This work examines the treatment Nevada's female prisoners received from Nevada's press, courts, and the Nevada State Prison from 1890 to 1930. It argues that gender perspectives held by Nevada's criminal justice officials caused them to treat female criminals both benevolently and harshly. This thesis also compares the treatment of minority women with Anglo women and finds minority women also received mixed treatment. Factors used to judge treatment include the sentences women received, how much of these sentences they served, the living conditions they faced at the Nevada State Prison and the conditions of their paroles and pardons.

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Validation Of The Ymca's Guide To Setting Workloads For The Submaximal Cycle Ergometer Test, Nicole Marie-Smith Dacuma Jan 1995

Validation Of The Ymca's Guide To Setting Workloads For The Submaximal Cycle Ergometer Test, Nicole Marie-Smith Dacuma

UNLV Retrospective Theses & Dissertations

The YMCA cycle ergometer test is a nationally used submaximal test that measures heart rate response to an increasing exercise workload. Two exercise heart rates are used to estimate maximal physical working capacity. A workload guide was established to make testing more efficient. The principle underlying the workload guide was that the examiner would assess the heart rate response to the first low intensity workload and from there would set workloads according to the guide. Problems have occurred with the guide, specifically with the highest intensity workload column. The purpose of this study was to validate the YMCA's guide to …

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The Integration Of Dance As A Dramatic Element In Broadway Musical Theatre, Robert G Dame Jan 1995

The Integration Of Dance As A Dramatic Element In Broadway Musical Theatre, Robert G Dame

UNLV Retrospective Theses & Dissertations

This study traces the development and growth of dance on the Broadway stage and the parallel growth of the effectiveness of choreography in enhancing the musical Theatre libretto. The study surveys the origins and early evolution of stage dance in the United States from 1775 to the introduction of ballet choreography in 1922. It concludes with an examination of Selected scripts which use choreography to dramatize the musical Theatre libretto, 1922 to 1990.

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Optical Absorption And Electrical Conductivity Of Electron Acceptor Doped Poly-3-Octylthiophene Films, Russell Leroy Lidberg Jan 1995

Optical Absorption And Electrical Conductivity Of Electron Acceptor Doped Poly-3-Octylthiophene Films, Russell Leroy Lidberg

UNLV Retrospective Theses & Dissertations

Optical absorption and electrical conductivity measurements of solution-doped poly-3-octylthiophene (P3OT) films were studied. Chloroform solutions of P3OT were doped with the organic electron-acceptors, 2,3-dichloro-5,6-dicyano-l,4-benzoquinone (DDQ) and 7,7,8,8-tetracyanoquinodimethane (TCNQ); and with the inorganic electron acceptor, ferric chloride (FeCl{dollar}\sb3{dollar}). Charge transfer was observed in P3OT solutions doped with FeCl{dollar}\sb3{dollar} and DDQ. TCNQ-doped solutions showed no optical evidence of charge transfer. Thin films of the doped P3OT were examined at various doping levels. Spectroscopic and electrical conductivity measurements of P3OT films, doped with DDQ, TCNQ, and FeCl{dollar}\sb3{dollar}, at different doping levels, are presented. Optical absorption measurements provided information on the degree of charge …

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Collection Of Gas Phase Chlorine Using Bonded Silica Sorbents, Bhaskar Tadepalli Jan 1995

Collection Of Gas Phase Chlorine Using Bonded Silica Sorbents, Bhaskar Tadepalli

UNLV Retrospective Theses & Dissertations

Sulfonamide functionalities bound to silica substrates have been investigated for collection of gas phase chlorine. Sorbents were prepared by bonding aminopropyl groups to a substrate (silica gel or filters) and then reacting with alkyl or aryl substituted sulfonyl chloride to produce the corresponding surface bound sulfonamide. Silica gel surfaces were investigated for collection efficiency using synthetic laboratory gas mixtures. After satisfactory collection efficiencies were demonstrated, sampling and analytical procedures were developed for analysis of air in the vicinity of a swimming pool. This method shows promise for applications in industrial settings and in atmospheric studies of the geochemical chlorine cycle.

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Test And Analysis Methods For Resolving Fan/Motor Vibration Problems In Air-Conditioning Units, Xiaolei Teng Jan 1995

Test And Analysis Methods For Resolving Fan/Motor Vibration Problems In Air-Conditioning Units, Xiaolei Teng

UNLV Retrospective Theses & Dissertations

This thesis deals with part of ASHRAE Research Project No. 685-RP: Test and Analysis Methods for Resolving Fan/Motor Vibration Problems in Air-Conditioning Units. The objective is to develop the basic analytical models and experimental procedures that can be used to find the vibration modes associated with fan impeller, motor and motor mount in air-conditioning units that are excited by fan impeller unbalance, taking into account the gyroscopic effect of the rotating fan impeller; Two air-conditioning units were investigated in the project. They were designated as test units #1 and #2. For the test unit #1 and test unit #2, the …

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The Effect Of Measurement Technique, And Load And Fatigue, With Changes In Crank Arm Length, On Lower Limb Kinematics In Cycle Ergometry, Chris D Williams Jan 1995

The Effect Of Measurement Technique, And Load And Fatigue, With Changes In Crank Arm Length, On Lower Limb Kinematics In Cycle Ergometry, Chris D Williams

UNLV Retrospective Theses & Dissertations

The effect of measurement technique, and load and fatigue, with changes in crank arm length, on lower limb kinematics in cycle ergometry; Pedal forces in a cycling task can be defined by joint moment cost functions which describe the optimal relationship between pedalling rate and bicycle-rider geometry for any given power level. In a task where power level changes, variations in pedalling rate may result in different optimum values contributing to bicycle-rider geometry. With the assumption that no changes occur in the cycle ergometer, it may be speculated that lower limb joint angles change. Eight males were tested on a …

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Dynamic Task Distribution In A Heterogeneous Loosely-Coupled Distributed Computer System, Samuel K West Jan 1995

Dynamic Task Distribution In A Heterogeneous Loosely-Coupled Distributed Computer System, Samuel K West

UNLV Retrospective Theses & Dissertations

This thesis studies the problem of dynamic distribution of tasks between hosts in a heterogeneous, loosely-coupled, distributed computing system. The goals of the study are to (a) demonstrate reduced execution time in a computer program making subroutine calls to be executed on a computer (or computers) which will yield better performance than the one on which the program was initiated, (b) demonstrate the feasibility of dynamic task-to-host binding, (c) demonstrate the feasibility of a programmer-transparent methodology of distributed computing using a library approach. These goals are partially realized using the Remote Procedure Call protocol in a programmer-transparent framework of library …

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Honor And The Southern Lady: The Persitence Of Antebellum Ideology Among Elite Southern Women, 1820-1877, Joan Meyer Jan 1995

Honor And The Southern Lady: The Persitence Of Antebellum Ideology Among Elite Southern Women, 1820-1877, Joan Meyer

UNLV Retrospective Theses & Dissertations

Honor and the Southern Lady: The Persistence of Antebellum Ideology Among Elite Southern Women, 1820-1877 investigates whether the war permanently changed elite white women's legal, economic and social status, gender relations and race relations. Southern honor and slavery were the social and economic basis of the hierarchical order of antebellum Southern life affecting women's lives and worldview. The war forced elite women to assume a greater responsibility which resulted in a more independent self-image and in more difficult race relations. Southern life changed because of post-war economic deprivation and emancipation, but Southern culture, including its hierarchy, remained. Elite women's preceptions …

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Moral Authority Of Juries: A Forgotten Aspect Of Citizenship, Mary B Beganyi Jan 1995

Moral Authority Of Juries: A Forgotten Aspect Of Citizenship, Mary B Beganyi

UNLV Retrospective Theses & Dissertations

This thesis examines the ethical and historical foundations for a Fully Informed Jury Amendment, legislation that recognizes the "nullification" power of the jury. The ethical discussion focuses on the dual role of the jury deliberation process paralleling the distinction between natural law and legalism. Hobbesian equity is contrasted with Aristotelian equity to further discussion of the ethical rationale for acknowledging a juror's duty to act according to his conscience for the sake of justice. The historical tradition of "trial by jury" as a political process is traced from its inception by Henry II through the present with emphasis on the …

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A Multi-Varied Approach To Meaning Of Some East Baltic Neolithic Symbols, Indre Rita Antanaitis Jan 1995

A Multi-Varied Approach To Meaning Of Some East Baltic Neolithic Symbols, Indre Rita Antanaitis

UNLV Retrospective Theses & Dissertations

Three sets of material and ideological data from East Baltic Neolithic pre-Corded Ware culture sites c. 6500-3500 B.P. are compiled and compared in order to reasonably interpret certain aspects of these prehistoric people's ideology, specifically as it relates to their faunal environment and gender-based patterns in their social system. Approaches taken consist of (1) statistical analyses of a symbolic data base comprised of anthropomorphic and zoomorphic art data, and grave good inventories as they relate to gender, (2) a comparison of frequencies of faunal types represented in economy and zoomorphic symbols, and (3) a cross-cultural comparison of contexts of the …

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A Gis-Based Decision Support For Travel Demand Analysis, Sandeep Burli Jan 1995

A Gis-Based Decision Support For Travel Demand Analysis, Sandeep Burli

UNLV Retrospective Theses & Dissertations

Transportation related problems have become one of the most pressing and visible concerns of urban life. Growing traffic congestion increases the pressure on the transportation system and results in deterioration of both the mobility and quality of transportation service provided. Although the transportation problem is multifaceted, a very important transportation issue in the mind of the public is congestion. Limited resources and insufficient transportation capacity aggravate the problem. This necessitates optimal allocation of existing and new resources. The objective of this research is to develop a decision support system to facilitate transportation planning and policy development. The system is designed …

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A 3-Dimensional H-Adaptive Algorithm For Species Transport Prediction, David Bradley Carrington Jan 1995

A 3-Dimensional H-Adaptive Algorithm For Species Transport Prediction, David Bradley Carrington

UNLV Retrospective Theses & Dissertations

Development of 3-dimensional self-adaptive algorithms for unstructured finite element grids is recent to the solution of partial differential equations. An h-adaptive grid embedding method is employed to help solve the Navier-Stokes equations for fluid flow and scalar transport; This h-adaptive algorithm, in combination with the finite element solver, has been designed to solve simple to moderately complex 3-dimensional problems on high-end PC's with at least 16 megabytes of ram, and more complex geometries on workstations and mainframes. The finite element solver is a one point Gauss-Legendre integration scheme which employs mass lumping, Cholesky skyline L-U decomposition, and Petrov-Galerkin upwinding; This …

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Transition To Parenthood: The Effect Of Division Of Labor Discrepancies On Marital Satisfaction, Alison Paige Done Jan 1995

Transition To Parenthood: The Effect Of Division Of Labor Discrepancies On Marital Satisfaction, Alison Paige Done

UNLV Retrospective Theses & Dissertations

In a longitudinal study of couples during the transition to first time parenthood, I examined several hypotheses regarding expectations and the division of labor between spouses. Seventy couples expecting the birth of their first baby filled out questionnaires late in pregnancy and three months postpartum. Before the birth of their babies an experimental group participated in a marital skills training workshop. Results indicated that husbands' and wives' expectations about the post-birth division of labor differed significantly from actual post-birth division of labor. This discrepancy affected marital satisfaction for wives but not for their husbands. The discrepancy also affected spouses' satisfaction …

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The Intifada, The Plo, And The Middle East Peace Process, 1987-1993, Roger A Duzenack Jan 1995

The Intifada, The Plo, And The Middle East Peace Process, 1987-1993, Roger A Duzenack

UNLV Retrospective Theses & Dissertations

This thesis presents a qualitative theoretical analysis of the variables leading to the 13 September 1993 signing of the Declaration of Principles between Israel and the Palestine Liberation Organization. The global and regional implications of the end of the Cold War and the demise of the Soviet Union, the Second Gulf War, and developments in the occupied territories culminating in the Intifada are examined. The end of the Cold War meant the end of superpower patronage and unlimited military support for radical regimes such as Syria and non-state actors such as the PLO. The Second Gulf War further eroded the …

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Visibility Properties Of Polygons, David Bruce Glasser Jan 1995

Visibility Properties Of Polygons, David Bruce Glasser

UNLV Retrospective Theses & Dissertations

Two problems dealing with visibility in the interior of a polygon are investigated. We present a linear time algorithm for computing the stair-case visibility polygon from a point inside a simple polygon, which is optimal within a constant factor. We show that the problem of locating the minimum number of 90{dollar}\sp\circ{dollar}-flood-lights to illuminate the interior of a simple polygon is NP-complete. We also discuss the generalization of the above results.

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Agency Without An Adversary: The Cia And Covert Actions In The Nineteen-Eighties And Beyond, Edward Alexander Gibbs Jan 1995

Agency Without An Adversary: The Cia And Covert Actions In The Nineteen-Eighties And Beyond, Edward Alexander Gibbs

UNLV Retrospective Theses & Dissertations

The CIA and its covert actions have been oft criticized. After serious Congressional oversight was established in 1976-77 (The Year of Intelligence) covert actions by the Agency tapered off. Did this mean the loss of a powerful tool because of Congressional meddling in foreign affairs or simply the retiring of outmoded practices? Have covert actions conducted in the 1980s including Afghanistan and Nicaragua been successful and will they need to continue now that the United States has become the sole superpower? Proposals to drastically restructure the CIA such as those of Daniel Patrick Moynihan are examined. The methodology will include …

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Self-Interest, National Interest And The Political Leader's Responsibility, Joe Gumiensky Jan 1995

Self-Interest, National Interest And The Political Leader's Responsibility, Joe Gumiensky

UNLV Retrospective Theses & Dissertations

The two major schools of thought on international relations in the United States are the realists and the internationalists (often called utopians). Both have a long history in Anglo-American thinking on foreign affairs but the internationalists have taken a back seat to the realists since World War II. Internationalists have called for international cooperation in the interests of humanity while the realists have emphasized self-interest and national power. An examination of the formation of the Panama Canal Treaties shows that neither school is adequate in explaining how national interest is defined. Instead, national interest is the result of a more …

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The Director-Playwright Collaboration On New Play Production, Brian Prince Haimbach Jan 1995

The Director-Playwright Collaboration On New Play Production, Brian Prince Haimbach

UNLV Retrospective Theses & Dissertations

The Director-Playwright Collaboration on New Play Production is an investigation of the working relationship between the playwright and the director and the process of new play production. The research is gathered by a series of interviews with student and professional playwrights and professional directors. The body of the thesis consists of an explanation of the interview process, a reporting of the information assembled during the interviews, an analysis of the information, and conclusions. Biographies of those interviewed are included as an appendix.

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A Space Focused Ion Time Of Flight Mass Spectrometer, And Spectroscopy Of Hydrogen Chloride, Deuterium Chloride, And Hydrogen Sulfide At "Hard" X-Ray Energies, David Linnemann Hansen Jan 1995

A Space Focused Ion Time Of Flight Mass Spectrometer, And Spectroscopy Of Hydrogen Chloride, Deuterium Chloride, And Hydrogen Sulfide At "Hard" X-Ray Energies, David Linnemann Hansen

UNLV Retrospective Theses & Dissertations

A space-focused ion time-of-flight mass spectrometer was used to study the relaxation dynamics of HCl, DCl, and H{dollar}\sb2{dollar}S following the excitation of a K-shell electron using synchrotron radiation. On resonance, fragmentation of the molecule involving neutral dissociation of hydrogen was found to be a significant decay channel, thus raising questions of how effectively dissociation competes with Auger decay in the relaxation process. In addition, a space-focused ion time-of-flight mass spectrometer was constructed to be optimized for use at the Advanced Light Source in Berkeley, California. Peaks with less than 1 ns full-width at half-maximum have been observed.

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Stress Study In Faulted Tunnel Models By Combined Photoelastic Measurements And Finite Element Analysis, Yuping Huang Jan 1995

Stress Study In Faulted Tunnel Models By Combined Photoelastic Measurements And Finite Element Analysis, Yuping Huang

UNLV Retrospective Theses & Dissertations

An investigation is performed to develop a proper technique for analyzing the stresses in and around three adjacent scaled tunnel models, along with the stress concentration factors resulting from the existence of a fault that penetrates two of the three tunnels, at an inclined angle; Photoelasticity and Finite Element method, are used in this investigation. The Photoelastic measurements are performed by using a plexiglass plane model. Concurrent simulations of the same plexiglass model are performed by the Finite Element analysis. The principal stress patterns are measured by both methods, and the stress concentration factors are calculated at predetermined points. Results …

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Estimation Of Pm-10 From Vacant Lands In The Las Vegas Valley, Joe Alvin Haun Jan 1995

Estimation Of Pm-10 From Vacant Lands In The Las Vegas Valley, Joe Alvin Haun

UNLV Retrospective Theses & Dissertations

According to the United States Environmental Protection Agency, the Las Vegas Valley is a serious nonattainment area for suspended particulate matter less than 10 microns in aerodynamic diameter (PM-10). The question is whether the amount of fine particulates less than 10 {dollar}\mu{dollar}m in the soil can be used to predict the amount of PM-10 entering the air stream during a wind erosion event. Over one hundred sixty soil samples were analyzed for soil particle size distribution, and a portable wind tunnel was constructed and operated in the field on fifty-two sites; The study sites covered seven of the nine major …

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Energy Flow In Nonlinear Circuits, Jianzhong Jiang Jan 1995

Energy Flow In Nonlinear Circuits, Jianzhong Jiang

UNLV Retrospective Theses & Dissertations

Apparent power and reactive power are two critical quantities in energy flow studies in electrical power systems. Existing definitions for these terms work well when both voltages and currents are sinusoidal with respect to time. However, both apparent and reactive power have no physical meaning. When these physically unclarified quantities are applied to non-sinusoidal systems, the following questions related to power flow remain not fully answered to date. What do these quantities really mean? Is it fair to bill customers based on the measurement of physically not meaningful quantities? What is the efficient way, both economical and technical, to compensate …

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Adaptive Restoration Of Text Images Containing Touching And Broken Characters, Venugopal Kalluri Jan 1995

Adaptive Restoration Of Text Images Containing Touching And Broken Characters, Venugopal Kalluri

UNLV Retrospective Theses & Dissertations

For document processing systems, automated data entry is generally performed by optical character recognition (OCR) systems. To make these systems practical, reliable OCR systems are essential. However, distortions in document images cause character recognition errors, thereby, reducing the accuracy of OCR systems. In document images, most OCR errors are caused by broken and touching characters. This thesis presents an adaptive system to restore text images distorted by touching and broken characters. The adaptive system uses the distorted text image and the output from an OCR system to generate the training character image. Using the training image and the distorted image, …

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Characterization Of Pozzolanic Cement For Radioactive Waste Disposal, James Alan Kappes Jan 1995

Characterization Of Pozzolanic Cement For Radioactive Waste Disposal, James Alan Kappes

UNLV Retrospective Theses & Dissertations

Material characterization studies were conducted to analyze the chemical and physical properties of pozzolanic cement. The principle objective of this research was to determine whether pozzolanic cement is a suitable material for permanently encasing high-level radioactive waste (HLW) and spent-nuclear fuel (SNF) in disposal canisters. This particular cement was produced by mixing lime or portland cement with volcanic tuff, a natural pozzolanic material extracted from Yucca Mountain, Nevada; Portland-pozzolan and lime-pozzolan mixtures were created, analyzed and tested for compressive strength. In addition, the pH of several mixtures was monitored and the values recorded periodically over the first eight days of …

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Rediscovering Frank O'Connor, John Connors Kerrigan Jan 1995

Rediscovering Frank O'Connor, John Connors Kerrigan

UNLV Retrospective Theses & Dissertations

"Minor" twentieth-century Irish writers such as Frank O'Connor have largely been neglected by a critical era which favors longer, more experimental fiction, following James Joyce's models. Both in practice and in theory, Frank O'Connor set standards for the modern short story beyond its current misconception as "a narrative form shorter than the novel." Still, as a master of his genre and a significant contributor to his nation's literary renaissance, Frank O'Connor's reputation has faded in recent years; This thesis will attempt to account for the decline in O'Connor's reputation and to reexamine his artistry in terms of his range and …

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