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Mathematical Modeling, Trajectory And Vibrations Control Of A Three Link Flexible Robot, Satish Jupudi
Mathematical Modeling, Trajectory And Vibrations Control Of A Three Link Flexible Robot, Satish Jupudi
UNLV Retrospective Theses & Dissertations
The objective of this thesis is to study the dynamics and control of a three link flexible robot. The Lagrange equations are used for deriving the equations of motion of this three link flexible robot. The equations of motion of this robot are derived by using a mathematical and symbolic manipulation software known as MACSYMA. The vibration mode shapes are approximated by using assumed mode method. A PID 'proportional, integral and differential' controller is used in this system to control the input torques to obtain desired joint angles trajectory. Linear stabilizers are introduced to suppress the vibrations of the links …
A Study Of The Relationship Between Anxiety And Social Support Systems, Nancy Knight Miller
A Study Of The Relationship Between Anxiety And Social Support Systems, Nancy Knight Miller
UNLV Retrospective Theses & Dissertations
The study was designed to investigate the relationship between anxiety and social support systems. University students (N = 145) were given two questionnaires. On the first questionnaire the students were required to respond to questions assessing their anxiety levels. On the second questionnaire the students were required to respond to questions assessing the levels of social support which they may have or perceive that they can access if and when they need it. A descriptive analysis of the data was made and significant negative correlation was found to exist between levels of social support and anxiety. Thus, it is important …
Incestuous Wharton: A Consideration Of The Theme, Laura Kathleen Mcbride
Incestuous Wharton: A Consideration Of The Theme, Laura Kathleen Mcbride
UNLV Retrospective Theses & Dissertations
Nineteenth century anthropologists had identified the development of incest taboos as the dividing line between savage and civilized human beings. Sigmund Freud expanded on these early anthropological notions of incest in identifying incestuous desire at the heart of human sexuality; In The Reef and Summer, Wharton toys with these scientific ideas about incest; the radically different way that Summer incorporates incestuous tension echoes Freud's more complex assumptions. In The Reef, Anna Leath upholds social order by rejecting her own sexuality. In refusing to marry Darrow, she takes a stand against the destabilizing forces of incestuous longing but loses her own …
Spectral Analysis Of Random Number Generators, Christy Juinsuk Olsen
Spectral Analysis Of Random Number Generators, Christy Juinsuk Olsen
UNLV Retrospective Theses & Dissertations
This paper is based on the theory developed by Dr. Evangelos Yfantis, professor of Computer Science at University of Nevada, Las Vegas. In this paper, we describe a method for testing the fairness of pseudorandom number generators using the Discrete Fourier Transform. We will show how the concept of a random process can be used in a representation for random discrete time signals. Using this concept, we have focused on the mathematical representations of the spectral analysis of a fair pseudorandom number generator. From this representation, a reasonable "spectral" expectation is determined. An algorithm which applies the developed method is …
The Japanese-American Dilemma: A Comparison Of Their Relationship Within George Modelski's Theoretical Framework Of Long Cycles, Valerie Jean Pelton
The Japanese-American Dilemma: A Comparison Of Their Relationship Within George Modelski's Theoretical Framework Of Long Cycles, Valerie Jean Pelton
UNLV Retrospective Theses & Dissertations
The objective of this thesis is to address the nature of Japanese-American bilateral relations in the twentieth century. An adaptation of George Modelski's theory of global long cycles is the tool used to analyze the relationship. This adaptation gives a broader evaluation of the relationship and provides a basis for predicting possible economic shifts. The focus of the analysis is an exploration of whether changes occurring in the post-1980s lay the ground work for a new stage of friction similar to that of the interwar period. Specifically, the argument is that the United States is in a period of decline …
Ambrose Bierce: Between Politics And Philosophy, Jeffrey Raymond Macmillan
Ambrose Bierce: Between Politics And Philosophy, Jeffrey Raymond Macmillan
UNLV Retrospective Theses & Dissertations
This study examines the political thought of Ambrose Bierce. Because of his aversion to Gilded Age politics, Bierce did not participate in the political process. As a result, his political thought must be considered from an ideological or philosophical perspective; Examination of his views suggests Bierce was a philosophical conservative much like the "father" of British conservative thought, Edmund Burke. Though many political historians argue American political culture has never contained elements of British conservatism, others claim there has always existed a small strain of Burkean conservatism throughout American political history. This study supports the latter view by holding the …
Management Principles For Bed And Breakfast Inns: Operator Needs And "How To" Book Advice, Pamela Anne Riches
Management Principles For Bed And Breakfast Inns: Operator Needs And "How To" Book Advice, Pamela Anne Riches
UNLV Retrospective Theses & Dissertations
This thesis is a study of the management information needed by bed and breakfast operators. The need to understand what makes a bed and breakfast inn successful and how to go about providing this information to the operators is the focus of this study. Four books on "How To Open a Bed and Breakfast Inn" were analyzed using content analysis. Additionally, a survey was sent to Nevada bed and breakfast operators to identify their informational needs. The results of the content analysis and the survey were compared in order to identify topics that were not being covered adequately for Nevada …
Polonium-210 Radioactivity In Lake Mead Fish, Charlita G Rosal
Polonium-210 Radioactivity In Lake Mead Fish, Charlita G Rosal
UNLV Retrospective Theses & Dissertations
Polonium-210, a naturally occurring radioisotope, has been found at high concentrations in marine fish. One publication reports much lower concentration (on the order of 10{dollar}\sp{-1}{dollar}) of {dollar}\sp{210}{dollar}Po in fresh-water fish compared to salt-water, although the visceral organs were not analyzed. This hypothesis was tested for its generality by analyzing various fish from Lake Mead. Studies of polonium are useful because the man-made radioactive plutonium is also a heavy metal with very similar energy of alpha particle emission during radioactive decay; This study was directed toward determining the radioactivity levels of {dollar}\sp{210}{dollar}Po in Lake Mead fish, particularly catfish, striped bass and …
Analysis Of Automatic Guided Vehicles And Self-Guided Vehicles For Hospital Foodservice, Michael Andrew Roden
Analysis Of Automatic Guided Vehicles And Self-Guided Vehicles For Hospital Foodservice, Michael Andrew Roden
UNLV Retrospective Theses & Dissertations
This thesis analyzes the relative merits of "Automatic Guided Vehicles" (AGVs) and "Self Guided Vehicles" (SGVs) in the area of hospital foodservice; Data is derived from the bids of Apogee Robotics for their Orbiter{dollar}\sp{\rm TM}{dollar} system (AGV) and Transitions Research Corp for the HelpMate{dollar}\sp{\rm TM}{dollar} self guided robot, to Humana Hospital Sunrise. The major difference between the two systems is that the AGV can carry a full Dietary cart with thirty trays but is limited to a pre-laid track system. Conversely HelpMate has a map of the facility programmed in its memory and can roam anywhere, but is only able …
Dating Of Fallout In Lacustrine Sediment In Southwestern Utah, Alex Clark Tikanen
Dating Of Fallout In Lacustrine Sediment In Southwestern Utah, Alex Clark Tikanen
UNLV Retrospective Theses & Dissertations
Sandy Cove is located in an area of southwestern Utah which received the highest fallout from Nevada Test Site (NTS) nuclear testing during the period 1951-1959. The reservoir was shown to have a constant sedimentation rate and to be relatively undisturbed. A 40 centimeter (cm) core taken from this reservoir contained sediment deposited after 1974 and did not reach back to the NTS fallout years of 1951 to 1959 or back to the peak worldwide fallout years of 1962-1963. The amounts of cesium-137 (Cs-137) and plutonium-239,240 (Pu-239,240) which were found in a 1974-1979 dated Sandy Cove core section were almost …
High Current Coaxial Ion Beam/Laser Beam Spectrometer, Qiang Tu
High Current Coaxial Ion Beam/Laser Beam Spectrometer, Qiang Tu
UNLV Retrospective Theses & Dissertations
The construction and operation of a new apparatus for making spectroscopic investigations of molecular ions is described. In the new ion beam machine, the ion beam and laser beam overlap in a coaxial geometry. The machine has much higher ion current than an apparatus previous used. The laser beam induces transitions between internal states of the molecular ion. The transitions are detected by allowing the ion beam to collide with background gas and detecting the surviving ion beam current. Because the cross-section depends on the internal state of the ion, the surviving ion beam current will change when the laser …
Storm-Dominated Lower Cambrian Depositional Environments In The Ravenswood Area, Lander County, Nevada, Readin Isaac Wilson
Storm-Dominated Lower Cambrian Depositional Environments In The Ravenswood Area, Lander County, Nevada, Readin Isaac Wilson
UNLV Retrospective Theses & Dissertations
A Lower Cambrian sedimentary sequence 40 meters thick is exposed in the Ravenswood area, Lander County, Nevada. This sequence is divided into 7 lithofacies which are interpreted to represent marine, littoral to sublittoral environments including offshore bars, sheet deposits (proximal, intermediate, distal), patch reefs, and storm-surge ebb channels; The lithology, paleontology, and sedimentary structures reflect deposition in a wave-dominated or storm-dominated system. Paleocurrent indicators suggest that strong westerly (present orientation of continent) winds created landward-directed currents transporting carbonate debris from the shelf to nearshore environments. Subsequently, storm-surge-ebb flows transported nearshore sediments seaward; The lithofacies presented herein indicate that sediments were …
Comparison Of Computer Models In Forecasting Hotel And Motel Guestroom Supply, Francois Arnaud Camou
Comparison Of Computer Models In Forecasting Hotel And Motel Guestroom Supply, Francois Arnaud Camou
UNLV Retrospective Theses & Dissertations
"Comparison of computer models in forecasting hotel and motel guestroom supply" developed a methodology for estimating guestroom supply. Several traditional forecasting models, including PLAN, were compared. The computer models were applied to Las Vegas, Nevada, using tourism and hospitality statistics from the Las Vegas Convention and Visitors Authority. The purpose of this study was to determine whether these models generate accurate forecasts; which is the most realistic model; and if these model(s) could be used to reduce guestroom overbuilding; First, statistics, from 1972 to 1990, were collected. Second, the primary data were analyzed to determine if any trends existed over …
Isotope Hydrology Of Lehman And Baker Creeks Drainages, Great Basin National Park, Nevada, Stephen Yaw Acheampong
Isotope Hydrology Of Lehman And Baker Creeks Drainages, Great Basin National Park, Nevada, Stephen Yaw Acheampong
UNLV Retrospective Theses & Dissertations
Environmental isotope techniques have been used to study the water resources in Great Basin National Park in Nevada in an attempt to understand the recharge and mixing characteristics of the creeks, lakes and shallow groundwater in the park. The results have been used to trace the sources of the springs and creek discharges and also to determine the isotopic behavior of the alpine lakes, as well as groundwater exchange with the lakes; Winter snow is the major contributor to groundwater and makes up about 80% of groundwater recharge while summer rains contribute about 20%; The isotopic compositions of the lakes …
Is The Conservation Of Classical Liberal Thought Inherent In The Doctrine Of The Church Of Jesus Christ Of Latter-Day Saints?, Thomas Godwin Chapman
Is The Conservation Of Classical Liberal Thought Inherent In The Doctrine Of The Church Of Jesus Christ Of Latter-Day Saints?, Thomas Godwin Chapman
UNLV Retrospective Theses & Dissertations
The thesis of this paper is that the conservation of classical liberal thought is inherent within the doctrine of The Church of Jesus Christ of Latter-day Saints; I initially define the political concepts of classical liberalism and conservatism to determine a standard by which to measure the thesis of this paper; Next, I examine fundamental events that shaped both the religious and political foundations of The Church of Jesus Christ of Latter-day Saints; Next, authoritative LDS scripture is examined to reveal classical liberal and conservative tenets inherent therein. Specifically, three relevant political concepts from the Book of Mormon are scrutinized: …
Diet And Diseases Of Zion Canyon Mule Deer, Zion National Park, Utah, Brenda Cunningham
Diet And Diseases Of Zion Canyon Mule Deer, Zion National Park, Utah, Brenda Cunningham
UNLV Retrospective Theses & Dissertations
Many mule deer (Odocoileus hemionus) in Zion Canyon, Zion National Park appear to be in poor condition. In this study diet composition, nutritional value of the diet, prevalences of diseases and parasites, and herd composition were examined for further evidence of poor condition. Analysis of forage plants indicated a nutritionally adequate diet. This conclusion was also supported by serum chemistry results. Serum titer levels did not reveal any current infections, however, high eosinophil levels in 84% of animals tested were likely due to parasitism. Cysticeri of two species of Taenia, adult Elaeophora schneideri, and Sarcocystis hemionilatrantis were isolated in necropsies …
The Validity And Reliability Of A 1-Minute Half Sit-Ups Test, Maria Hortensia Diener
The Validity And Reliability Of A 1-Minute Half Sit-Ups Test, Maria Hortensia Diener
UNLV Retrospective Theses & Dissertations
The purpose of this study was to investigate the validity and reliability of a 1-minute half sit-up test to allow for its implementation as a test of abdominal strength and endurance. Subjects (N= 133) performed as many sit-ups as they could in one minute. A test-retest reliability study was conducted for two measuring devices, in which subjects performed the sit-ups twice using the same apparatus. An inter-apparatus reliability study between the two apparatus was conducted, in which subjects performed the sit-ups once for each measuring device. Results showed very high test-retest reliability for both measuring devices and high inter-apparatus reliability. …
Is Family Environment A Mediator Of Bulimia And Child Sexual Abuse?, Teresa Lynn Hastings
Is Family Environment A Mediator Of Bulimia And Child Sexual Abuse?, Teresa Lynn Hastings
UNLV Retrospective Theses & Dissertations
Reports concerning the high rate of child sexual abuse in bulimic populations have not generally been supported by empirical investigations. The current study addressed methodological problems that may have accounted for insignificant results, and investigated family environment as a possible mediator of the relationship. Results indicate a significant correlation between bulimia and child sexual abuse within a sample of college women (n = 786). Furthermore, both women with bulimia and victims of child sexual abuse reported families that were low in cohesion and independence, and higher in conflict and control. Family environment did not significantly mediate or moderate the relationship …
The Political Economy Of Iran: A Conceptual, Theoretical And Historical Analysis, Stacey Whitmore Hanlon
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, and the …
The Effect Of Amino Acid Supplementation On Weight, Body Composition, Muscle Size, And Muscle Strength In Amateur Weightlifters, Lisa Anne Martin-Risucci
The Effect Of Amino Acid Supplementation On Weight, Body Composition, Muscle Size, And Muscle Strength In Amateur Weightlifters, Lisa Anne Martin-Risucci
UNLV Retrospective Theses & Dissertations
Fifteen amateur weightlifters, between the ages of 21 and 35 years, volunteered to participate in a study to determine the effect of an amino acid supplement on muscle size, muscle strength, body composition, and body weight. A blind protocol was followed in which eight of the participants were administered the amino acid supplement and seven received a placebo. Each subject was tested before and immediately after the ten week experimental period for height, weight, skinfolds, hydrostatic weighing, body circumferences, static strength, and dynamic strength; Post supplementation, independent T tests indicated that the differences in percent body fat, weight, circumference measurements, …
Impact Assessment Using Geographic Information System (Gis): Transportation Engineering Applications, Soon-Tin Lim
Impact Assessment Using Geographic Information System (Gis): Transportation Engineering Applications, Soon-Tin Lim
UNLV Retrospective Theses & Dissertations
This study addresses the use of geographic information systems (GIS) in several transportation engineering applications. Geographic information systems are shown to exhibit significant potential in impact assessment and complex spatial data management. Advances in computing technology have lead to wide spread use of GIS in many areas, particularly in transportation, environmental and landuse impact assessment studies; Yucca Mountain, 100 miles northwest of Las Vegas Nevada has been chosen as the site of a proposed repository for high level nuclear waste. This proposed siting has motivated the study of potential transportation related impacts. GIS may be used to facilitate assessment of …
Self-Stabilizing Network Protocols, Eugene Outley
Self-Stabilizing Network Protocols, Eugene Outley
UNLV Retrospective Theses & Dissertations
A network protocol is a specific type of a distributed system since it is somewhat loosely connected and communicates with the other processes in the network via message passing over the communication links of the network; A hard real-time system requires that the termination of each task occur within a predefined time limit in order to maintain system integrity; The global state of the system depends on the state of each processor in the system which is determined by the values of the variables and the messages contained in the channel(s) common to that processor. The set of global states …
Gender Discrimination And The Future Of Equality, Clotilde Ann Casados Mueller
Gender Discrimination And The Future Of Equality, Clotilde Ann Casados Mueller
UNLV Retrospective Theses & Dissertations
Sex discrimination is the hot topic of the 1990's. Key events occurred in 1991 that propelled the issue into America's living rooms. Starting with the passage of the Civil Rights Act of 1991, these events raised new social consciousness on women's rights. Events such as the confirmation of Justice Clarence Thomas, two highly publicized rape trials involving newsmaker-men, and the release of the "glass ceiling" report by the U.S. Secretary of Labor that promised vigorous action against violators of sex discrimination created a new awareness; Also, two new books emerged, one citing the "victimization" of women by men, the media, …
Model Linkages Between A Hazardous Waste Transportation Impact/Risk Assessment Model And A Transportation Planning Model In A Geographic Information System Environment, Justin Paul Rasas
Model Linkages Between A Hazardous Waste Transportation Impact/Risk Assessment Model And A Transportation Planning Model In A Geographic Information System Environment, Justin Paul Rasas
UNLV Retrospective Theses & Dissertations
Several computer models are currently available that can address portions of nuclear waste transportation analysis. However, no single computer model is currently available to permit an integrated analysis that provides effective graphical display of results and product generation. One model available for analysis related to the transport of hazardous material is Radtran. Radtran requires difficult to obtain data and its outputs are presented in a tabular format. A travel demand model, such as Tranplan, can provide some of the data required for Radtran analysis, but the format of its output is not in a form Radtran can readily use. For …
The Impact Of Child Care On The Work Habits Of Parents In The Las Vegas Hospitality Industry: The Need For Employer-Supported Day-Care Centers, Joseph Sola Tafa
The Impact Of Child Care On The Work Habits Of Parents In The Las Vegas Hospitality Industry: The Need For Employer-Supported Day-Care Centers, Joseph Sola Tafa
UNLV Retrospective Theses & Dissertations
An analysis of a survey on the perception/work attitude of parents was conducted with the participation of working parents of Citibank, Nevada and The Palace Station Hotel/Casino in Las Vegas. An evaluation of the results was used to determine if a positive relationship exists between the perceptions/attitude of parents who have access to child care at their work place and those who do not have child care benefits at work. The results show that parents who have child care at their place of work or have access to child care close to their place of work will suffer less distraction …
Videocentric Criticism, Postmodernism And The Deconstruction Of Television, Christopher James Taylor
Videocentric Criticism, Postmodernism And The Deconstruction Of Television, Christopher James Taylor
UNLV Retrospective Theses & Dissertations
This research offers an alternative method to the study of visual narrative. It criticizes Western society's videocentrism, or centering of television as the predominant medium of communicating to mass society. This method is known as videocentric criticism; Chapter one assesses the modern and postmodern condition. Philosophy from the Greek and modern Enlightenments suggests that Western society's videocentrism is a developing process originating in these periods. It then addresses modernity and postmodernity. Postmodern cultural phenomena that progressed in proximity with the evolution of television is discussed; Chapter two defines videocentric criticism. Narrative, structuralism, post-structuralism, and deconstruction are applied to televisual information. …
Sensor-Based Automated Path Guidance Of A Robot Tool, Anietie Udo Ukpong
Sensor-Based Automated Path Guidance Of A Robot Tool, Anietie Udo Ukpong
UNLV Retrospective Theses & Dissertations
The objective of the research is to develop a robot capability for a simultaneous measurement of the orientation (surface normal) and position of a 3-dimensional unknown object for a precise tool path guidance and control. The proposed system can guide the robot manipulator while maintaining specific orientation between the robot end-effector and the workpiece and also generate a measured geometric CAD database; The first phase involves the computer graphics simulation of an automated guidance and control of a robot tool using the proposed scheme. In the simulation, an object of known geometry is used for camera image data generation and …
A Sample Selective Linear Predictive Analysis Of Speech Signals, Suresh Kumar Venkata Vishnubhatla
A Sample Selective Linear Predictive Analysis Of Speech Signals, Suresh Kumar Venkata Vishnubhatla
UNLV Retrospective Theses & Dissertations
The Linear Prediction Analysis is one of the popular methods of processing speech. But it has problems in estimating the vocal tract characteristics of voiced sounds uttered by females and children. This is because the conventional linear prediction method assumes that all the sample values in each analysis frame are to be approximated by a linear combination of a definite number of the previous samples whether the previous samples include excitation periods or not. Also, the Linear Prediction analysis is easily affected by source excitation; The vocal tract characteristics of signals of short pitch period can be estimated more accurately …
Germany's Pivotal Role In The Construction Of A Common European House, John P Wallin
Germany's Pivotal Role In The Construction Of A Common European House, John P Wallin
UNLV Retrospective Theses & Dissertations
In the wake of the bipolar order, a political and strategic reconfiguration of Europe is necessary that reflects the current international atmosphere. Germany's reunification has prompted a reappraisal of that country's economic, political, and security role in Europe. Germany is a central element to any new European order due to its geography, economic and political clout, and its unique historical position between East and West; In light of recent changes, the relevance of neofunctional integration theory has been revived. The intergovernmental conferences at Maastricht on economic and political union demonstrate that functional and political "spill-over" are complemented by cultivated "spill-over"--the …
The Structure, Conduct, And Performance Of Nevada's Slot Route Industry, Benedict Dell'orto
The Structure, Conduct, And Performance Of Nevada's Slot Route Industry, Benedict Dell'orto
UNLV Retrospective Theses & Dissertations
The four largest firms in the Nevada slot route industry control over 70 percent of the industry. Its structure was shown to be highly concentrated using the Herfindahl-Herschman index; The individual slot route operators appear to conduct themselves in a non-competitive manner by differentiating their respective products. Each firm in the industry established their own niche either through product or service differentiation; Firms in concentrated industries tend to earn monopoly profits. Yet, using Tobin's q and Jensen's coefficient, we show that Nevada's slot route firms did not earn excess profits, despite the high degree of industrial concentration; The presence of …