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Full-Text Articles in Entire DC Network
Unlv College Of Education Multicultural & Diversity Newsletter, Steve Mccafferty, John Filler, Nancy P. Gallavan, Le Ann Putney, Nancy Sileo, Kyle Higgins, Porter Troutman, Paul Meacham, Cyndi Giorgis, Aimee Govett, Jean Henry, Bill Pankratius, Susan Rumann, Joyce Nelson-Leaf
Unlv College Of Education Multicultural & Diversity Newsletter, Steve Mccafferty, John Filler, Nancy P. Gallavan, Le Ann Putney, Nancy Sileo, Kyle Higgins, Porter Troutman, Paul Meacham, Cyndi Giorgis, Aimee Govett, Jean Henry, Bill Pankratius, Susan Rumann, Joyce Nelson-Leaf
College of Education Multicultural & Diversity Newsletter
A newsletter discussing a variety of topics dealing with multicultural topics and diversity in education.
Caribbean: Online Bibliography Environmental History Of Latin America, Darcy C. Del Bosque
Caribbean: Online Bibliography Environmental History Of Latin America, Darcy C. Del Bosque
Library Faculty Research
This is an annotated bibliography of articles, conference proceedings, reports, and books.
A Survey Of Southern Nevada Employers Regarding The Importance Of Scans Workplace Basic Skills, Greg P Richens
A Survey Of Southern Nevada Employers Regarding The Importance Of Scans Workplace Basic Skills, Greg P Richens
UNLV Retrospective Theses & Dissertations
This study utilized quantitative research methodology and incorporated a descriptive research design that described the perceptions of southern Nevada employers who responded to a survey regarding the importance of the workplace basic skills identified by the Secretary's Commission on Achieving Necessary Skills (SCANS) established by the U.S. Department of Labor. The study sought to determine whether the SCANS skills and competencies were perceived by responding employers as necessary for entry-level employment. Over 75 percent of respondents to the survey essentially considered the SCANS skills and competencies as adequately identifying competencies and skills needed for entry-level employment in their respective business. …
Educator Study Groups: An Exploration Of An Alternative Method Of Preservice Teacher Development, Leah Mary Herner
Educator Study Groups: An Exploration Of An Alternative Method Of Preservice Teacher Development, Leah Mary Herner
UNLV Retrospective Theses & Dissertations
This study was conducted to investigate the effect study groups have on preservice teacher education. The participants were enrolled in ESP 444, The Special Education Student in the General Education Classroom. The study took place during a 9-week period; Forty-two students participated in this study. The study involved placing the students randomly into two groups. The lecture group received lectures from graduate students in special education. The study group worked together in groups to research and discuss inclusion of students with disabilities. All students took a knowledge-based pretest and attitude survey prior to beginning the study. All students took a …
Nationally Recognized Superintendents: Perceptions On How They Lead In Relation To The Characteristics Of Effective Schools Research, Warren Paul Mckay
Nationally Recognized Superintendents: Perceptions On How They Lead In Relation To The Characteristics Of Effective Schools Research, Warren Paul Mckay
UNLV Retrospective Theses & Dissertations
The purpose of this study was to increase the knowledge about the qualities, attitudes, and behaviors of public school superintendents in relation to the effective schools research. It also sought to further investigate the relationship between the role of the superintendent and the creation of effective schools and effective school districts. Finally, this research described how a recognized population of public school superintendents perceived themselves to incorporate effective school methods in their leadership strategies. This ultimately provided the opportunity to validate the findings of the effective schools research through the investigation of the superintendents office; This study employed what Creswell …
The Art Of Truth: The Architecture Of 19th -Century American Allegory, Gary Brian Bennett
The Art Of Truth: The Architecture Of 19th -Century American Allegory, Gary Brian Bennett
UNLV Retrospective Theses & Dissertations
The current study, in its broadest scope, explores the nature of literary art primarily as a moral experience. Specifically, it addresses ironic allegory---a genre of fiction born during the American Renaissance of the mid-nineteenth century. As an amalgam of two other oblique genres, Gothic fiction and Puritan allegory, ironic allegory was originally the product of Nathaniel Hawthorne's moral imagination and tragic sensibility; consequently, its primary themes are the properties of time, the problems of tragedy, the process of transformation, and the preeminence of truth. Focusing exclusively on the architectural metaphors in Cooper's Templeton trilogy, Hawthorne's The House of the Seven …
Finite Elements With H -Adaptation For Momentum, Heat And Mass Transport With Application To Environmental Flow, David Bradley Carrington
Finite Elements With H -Adaptation For Momentum, Heat And Mass Transport With Application To Environmental Flow, David Bradley Carrington
UNLV Retrospective Theses & Dissertations
Self-adaptive algorithms for 2 and 3-dimensional unstructured finite element grids are recent to the solution of partial differential equations, particularly those equations describing environmental transport. An h-adaptive grid embedding method is developed to solve the incompressible Navier-Stokes equations for fluid flow and scalar transport. An application to atmospheric mass transport is presented; This h-adaptive algorithm, in combination with the finite element method, has been designed to solve 2 and 3-dimensional problems on Pentium PC's, including problems involving complex geometry on high end PC's, workstations and mainframes. The Galerkin finite element solver is a 2 point Gauss-Legendre integration scheme which employs …
Think Different: A Comparison Of The Critical Thinking Abilities Of Education Majors, Shelly Weeks Channel
Think Different: A Comparison Of The Critical Thinking Abilities Of Education Majors, Shelly Weeks Channel
UNLV Retrospective Theses & Dissertations
In an increasingly complex society, the need for people to exercise critical thinking effectively is clearly evident. The institution of education recognizes that its responsibility to teach students to think critically is vital in order for them to negotiate decisions humanely and intelligently in an ever-changing world; Hundreds of reports from various committees and researchers along with such insidious incidents as the rise in murderous assaults on children inside school buildings, such as the massacre in Littleton, Colorado, attest to the fact that schools fail to teach students to evaluate social life critically. While educators advocate critical thinking, teacher education …
The Effects Of Computerized Instruction In Intermediate Algebra, Cynthia Lynn Glickman
The Effects Of Computerized Instruction In Intermediate Algebra, Cynthia Lynn Glickman
UNLV Retrospective Theses & Dissertations
This study was designed to measure the effects of a reform oriented computer assisted instructional environment R-CAI on community college students' procedural skill acquisition and conceptual understanDing Also examined were the effects of a computerized instructional environment on students' attitudes toward mathematics; The R-CAI involved the use of Prentice Hall's Interactive Mathematics with lessons created to provide opportunities for students to learn within "real world" contexts. Using these activities, students collected information, analyzed data and applied mathematical concepts; After controlling for initial differences, it was concluded that students taught by the R-CAI environment significantly outperformed students taught by the Traditional …
Dimension Reduction Of Image And Audio Space, Blaine Lee Hagstrom
Dimension Reduction Of Image And Audio Space, Blaine Lee Hagstrom
UNLV Retrospective Theses & Dissertations
The reduction of data necessary for storage or transmission is a desirable goal in the digital video and audio domain. Compression schemes strive to reduce the amount of storage space or bandwidth necessary to keep or move the data. Data reduction can be accomplished so that visually or audibly unnecessary data is removed or recoded thus aiding the compression phase of the data processing. The characterization and identification of data that can be successfully removed or reduced is the purpose of this work. New philosophy, theory and methods for data processing are presented towards the goal of data reduction. The …
An Evaluation Of Unsaturated Flow Models In An Arid Climate, Jason Michael Dixon
An Evaluation Of Unsaturated Flow Models In An Arid Climate, Jason Michael Dixon
UNLV Retrospective Theses & Dissertations
The objective of this study was to evaluate the effectiveness of two unsaturated flow models in and regions. The area selected for the study was the Area 5 Radioactive Waste Management Site (RWMS) at the Nevada Test Site in Nye County, Nevada. The two models selected for this evaluation were HYDRUS-1D [Simunek et al., 1998] and the SHAW model [Flerchinger and Saxton, 1989]. Approximately 5 years of soil-water and atmospheric data collected from an instrumented weighing lysimeter site near the RWMS were used for building the models with actual initial and boundary conditions representative of the site. Physical processes affecting …
Non-Intrusive Assessment Of Radionuclides In Enclosed Pipes And Vessels, Traci Renee Glew
Non-Intrusive Assessment Of Radionuclides In Enclosed Pipes And Vessels, Traci Renee Glew
UNLV Retrospective Theses & Dissertations
The assessment and cleanup of various nuclear sites throughout the country has become an increasingly important issue. Methods for assessment of radioactive material within pipe and duct systems at these sites must be cost effective, efficient, and safe. Several tests were conducted at the University of Nevada, Las Vegas, using both steel and aluminum pipes with a Cesium 137 source placed inside. A Geiger-Muller pancake detector was used to measure gamma rays from several angular positions and at various axial distances along the outside of the pipe. A plot of the data showed excellent results despite the low efficiency of …
United States Business Travelers' Response To Price Changes And Overbooking: Its Effect On Intentional Loyalty In The Hospitality Industry, Nicholas Jee Gordon
United States Business Travelers' Response To Price Changes And Overbooking: Its Effect On Intentional Loyalty In The Hospitality Industry, Nicholas Jee Gordon
UNLV Retrospective Theses & Dissertations
Companies that have highly perishable inventories have used yield management quite extensively over the past decade. The process helps to maximize revenues based on demand. The airline industry was the first to adopt the process into a business setting and has seen varying results along the way. Much of the existing research is geared towards examining the revenue producing potential of the system. There has been little research however, to examine how this process of shifting price to manipulate demand effects customer loyalty; This research attempts to evaluate what the effects actually are when price is used as the major …
On Lossless Image Compression, Huawen He
On Lossless Image Compression, Huawen He
UNLV Retrospective Theses & Dissertations
Accompanying the growth in the size of database and the use of images has been a large increase in the number of users and duration of usage by personnel at remote locations. These factors result in tremendous amounts of data being stored and transferred between computers and remote terminals. Data compression is therefore very important to reduce the size of data files and the time needed to transfer between the remote terminals. A wide variety of compression techniques have been developed over past 20 years to reduce size of image files. Some techniques represent the application of modified lossless compression …
"Welcome, Fellow Toastmasters": The History And Membership Of A Public Speaking Phenomenon, Ellen Beth Levine Bremen
"Welcome, Fellow Toastmasters": The History And Membership Of A Public Speaking Phenomenon, Ellen Beth Levine Bremen
UNLV Retrospective Theses & Dissertations
Since 1905, Toastmasters International (TI) serves as the most recognized organization for voluntary oral communication practice in the world. Due to the dearth of scholarly communication research regarding TI, this thesis details the history, educational structure, and program dynamics of the organization. Literature review included the nature and extent of post-secondary communication education, as well as social affiliation and leisure theories. Finally, an Internet survey of 343 international TI members revealed the demographics of the "typical" TI member: a male or female college graduate between the ages of 36--50, who works in a wide range of professions. The study also …
Measuring Efficiency In The Clark County Hotel Casino Industry, Daniel Encinoza
Measuring Efficiency In The Clark County Hotel Casino Industry, Daniel Encinoza
UNLV Retrospective Theses & Dissertations
The analysis and comparison of productivity in the service sector have proven to be difficult. Nevertheless, the Tomqvist index of relative productivity used in this study allows me to compare the relative productivity of different hotel-casino properties, while avoiding the usual problems that arise when measuring efficiency in service industries. This empirical study illustrates the efficiency of index numbers in evaluating relative efficiency. The simplicity of the model and its ability to evaluate all aspects of the production process, including economies of scale, renders this methodology far superior to the use of direct indexes. From calculations included in the study, …
Effect Of Atmospheric Variations On Subsurface Flow And Transport, Laila Badran
Effect Of Atmospheric Variations On Subsurface Flow And Transport, Laila Badran
UNLV Retrospective Theses & Dissertations
This thesis investigates the effect of atmospheric variations on subsurface flow and transport at the proposed high level waste repository at Yucca Mountain, Nevada. The conditions of subsurface transport were simulated with NUFT (Nonisothermal Unsaturated-Saturated Flow and Transport model) modeling software developed by the Lawrence Livermore National Labs (Nitao, 1995). Rock properties and surface ambient conditions specific to the mountain, including diurnal and seasonal changes in temperature, pressure and humidity were incorporated into the NUFT model. The effects of changing atmospheric conditions on the liquid and vapor phase components and fluxes were examined as well. Time swing analysis of weather …
A Study To Determine The Minimum Autocad Command Set For Computer-Aided Drafting In The Las Vegas Area, David John Brodersen
A Study To Determine The Minimum Autocad Command Set For Computer-Aided Drafting In The Las Vegas Area, David John Brodersen
UNLV Retrospective Theses & Dissertations
The purpose of this study was to identify the computer aided drafting (CAD) commands most frequently used in the industrial application of the thirteenth release of the software product AutoCAD, vended by AutoDESK. Respondents were located within the Las Vegas drafting community and nearby areas. The outcome of this study was used to identify commands needed to operate the software at a desired level of competency and to identify any relationship between the release thirteen commands used by the respondents and commands available in the previous release of the software; A questionnaire was delivered to 90 businesses engaged in drafting …
Fast Algorithms For Wavelet-Based Analysis Of Hyperspectral Signatures, Jiang Li
Fast Algorithms For Wavelet-Based Analysis Of Hyperspectral Signatures, Jiang Li
UNLV Retrospective Theses & Dissertations
Hyperspectral sensors promise great improvements in the quality of information gathered for remote sensing applications. However, they also present a huge challenge to data storage and computing systems. Thus there is a great need for reliable compression schemes, as well as analysis tools that can exploit the hyperspectral data in a computationally efficient manner. It has been proposed that wavelet-based methods may be superior to currently used methods for the analysis of hyperspectral signatures. In this thesis, a wavelet-based method, as well as traditional analytical methods, was implemented and applied to hyperspectral images. The computational expense of the various methods …
Ethical Climates In Lodging Operations: An Exploratory Study Of Management Perceptions, Todd Isaac Weinstein
Ethical Climates In Lodging Operations: An Exploratory Study Of Management Perceptions, Todd Isaac Weinstein
UNLV Retrospective Theses & Dissertations
This study explored the role of ethics in lodging organizations. Managers working at five different properties constituted the survey sample. The study examined management perceptions as measured by the Ethical Climate Questionnaire (ECQ). This instrument, used in previous research on moral reasoning, is designed to assess the perceptions of respondents based on three categories in two separate dimensions: ethical criteria (egoism, benevolence and principle) and loci of analysis (individual, local, and cosmopolitan). Each category comprises a separate ethical climate. Results from the ECQ were compared to various demographic variables such as gender, age, years of management experience, and number of …
Automated Stenosis Quantification In Coronary Arteriograms, Yu Zhang
Automated Stenosis Quantification In Coronary Arteriograms, Yu Zhang
UNLV Retrospective Theses & Dissertations
Computer-assisted techniques have been shown to be useful in estimating the diameter and cross-sectional area of coronary artery lesions. In this study, two different strategies are employed for identification of artery contours, i.e., scanning and tracKing The scanning approach is accomplished by a canny edge detector. The edge tracking approach is in favor due to its low variability and fast analysis time. Given a start point and search direction, a tracking process automatically detects the arteries edge. From the edge points, a quantitative analysis process calculates the arteries diameter and percent diameter stenosis. As the software runs within a second, …
The Use Of Continuum Models For Conducting Both Linear And Nonlinear Analyses Of Lattice Structures, Simon Yi Luk
The Use Of Continuum Models For Conducting Both Linear And Nonlinear Analyses Of Lattice Structures, Simon Yi Luk
UNLV Retrospective Theses & Dissertations
Large structural projects, such as lattices for framing tall buildings or space purpose can result in huge finite element models. The use of continuum methodology for conducting both linear and nonlinear analyses of lattice structures in finite-element models results in significantly fewer degrees of freedom than discrete finite-element models, which individually model each structural element. Hence, the use of continuum models can result in a considerable reduction in computational effort with a corresponding savings in cost, at least during early 1990s when Pentium computer was not available. Now, it can still be a good design method especially for tall buildings …
Midpoint Estimation Applied To The Vertical-Horizontal Illusion, Gary Wayne Ogren
Midpoint Estimation Applied To The Vertical-Horizontal Illusion, Gary Wayne Ogren
UNLV Retrospective Theses & Dissertations
Eighty-three college undergraduates estimated midpoints of vertical lines presented in cued (a letter or figure presented below the line), uncued, and inverted T conditions. Subject's mean estimates were near the geometric midpoint in the two cued conditions, and significantly above the midpoint in the uncued and inverted T conditions. Mean estimates in the inverted T conditions were significantly above those in the uncued condition. These displacements are discussed in relation to previous midpoint estimation findings and theoretical explanations of the vertical-horizontal illusion. The midpoint estimation task is evaluated as an investigative tool in studies of geometric-optical illusions, and recommendations for …
Responses Of Python Regius To Animal Chemosensory Stimuli: Implications Of Foraging Ecology, Albert Klein
Responses Of Python Regius To Animal Chemosensory Stimuli: Implications Of Foraging Ecology, Albert Klein
UNLV Retrospective Theses & Dissertations
Python regius is considered to be a sit-and-wait forager and has been reported to attempt capture of live and dead homeothermic prey. This preference for homeothermic prey may be innate and is not dependent on thermal cues. Chemosensory stimuli appear to be the only stimuli which may indicate to P. regius the metabolic group that a dead prey item at room temperature item may belong to. Snakes were exposed to novel odors from homeothermic and poikilothermic animals. Prey Searching Behavior (amount of locomotion) and Information Gathering Behavior (tongue flicking) were observed. Habituation to odors resulted in decreased behaviors. Odors of …
A 3-Dimensional H-Adaptive Algorithm For Groundwater Flow And Contaminant Transport, Lan Li
A 3-Dimensional H-Adaptive Algorithm For Groundwater Flow And Contaminant Transport, Lan Li
UNLV Retrospective Theses & Dissertations
The simulation of contaminant transport through the subsurface is a very useful way to effectively design mitigation methods for cleanup and prevention of the deterioration of groundwater; The GWADAPT3 code is developed using the finite-element method and mesh adaptation to simulate groundwater flow and contaminant transport. The formulation is based on the equations for conservation of mass, Darcy's law for an anisotropic medium, and the time-dependent species transport equations. Petrov-Galerkin weighting of the advection terms provides numerical stability. An explicit time marching scheme is used to solve the transient equations. By utilizing unstructured adaptive meshing, concentration is accurately resolved; Benchmark …
A Comparison Of Fast And Slow Contraction Speeds Using Electromyography, Philip James Melhorn
A Comparison Of Fast And Slow Contraction Speeds Using Electromyography, Philip James Melhorn
UNLV Retrospective Theses & Dissertations
The purpose of this study was to determine if differences in EMG activity existed between fast and slow contraction speeds during isolated, one-armed biceps curls to muscle failure. Participants performed one set of biceps curls to muscular failure on two separate occasions at different contraction speeds. Constant load equal to 75% of 1RM was used for each test. The dependent variables were integrated EMG (iEMG), percent change in mean frequency, and time to muscular failure. Integrated EMG measurements revealed significantly greater muscle activity for the slow contractions (t = 4.76, p {dollar}<{dollar}.001). The time to muscular failure also showed significant differences having the fast contraction speed achieve muscle failure faster than the slow contraction speed (t = 5.23, p {dollar}<{dollar}.001). The comparison of frequency data failed to reach significance. A significant correlation (r =.514) was determined for iEMG and time to muscular failure. These results suggest that differences exist in iEMG and time to muscle failure between fast and slow contraction speeds.
The Aerodynamic Response Of Airborne Discs, Timothy Lewis Mitchell
The Aerodynamic Response Of Airborne Discs, Timothy Lewis Mitchell
UNLV Retrospective Theses & Dissertations
A study has been conducted to characterize the flow over a free-flying disc. In this study, three types of discs are analyzed in a series of stationary experiments, and a single disc is analyzed in a spinning experiment. Two dimensionless parameters dominate the experiments, the Reynolds number and the tip speed ratio. The first experiment measured the lift and drag at varying angles of attack on a stationary disc. The second stationary experiment was a unique measurement of the center of lift of a disc as a function of velocity. The third stationary experiment was a tuft test to describe …
A Heuristic Approach For Path Planning For Redundant Robots, George Petrescu
A Heuristic Approach For Path Planning For Redundant Robots, George Petrescu
UNLV Retrospective Theses & Dissertations
A new method to solve the trajectory generation for a redundant manipulator is proposed. It avoids traditional computationally intensive methods by relying on the human experience; The proposed method uses a fuzzy logic controller to generate the magnitude of the angles needed to move the end effector to the next target point. The inputs to the controller are the desired displacement of the end effector and the elements of the jacobian matrix that correspond to the considered joint, while the output is the angle magnitude of the joint needed to reach the target point; An algorithm is used to determine …
Experimental Study Of Drying Of A Porous Medium At Sub-Residual Saturations, Adaikkalavan Kumar Sathappan
Experimental Study Of Drying Of A Porous Medium At Sub-Residual Saturations, Adaikkalavan Kumar Sathappan
UNLV Retrospective Theses & Dissertations
An experimental study has been conducted to understand the drying effects in sub-residual saturated systems. Different flow rates and isothermal wall temperatures were used in the experiments. In two experimental runs, the test section was maintained at room temperature and gas flow initiated. Four other cases were started initially with heating up the porous medium with no flow, and then letting nitrogen gas flow through the test-section after a steady-state temperature distribution had been reached (denoted in what follows as the "steady heating case"); Temperatures throughout the bed and entering and exiting humidity values as a function of time among …
Soluble Mineral Content Of Soils Using Electrical Conductivity, Merrill Gene Schweppe
Soluble Mineral Content Of Soils Using Electrical Conductivity, Merrill Gene Schweppe
UNLV Retrospective Theses & Dissertations
Soils with soluble salts occur in semi-arid and arid regions worldwide. The soluble mineral percentage of soil is determined by measuring the weight lost by diluting the soil mass with a fixed quantity of water. Correct estimation of soluble mineral content is made at the point of unsaturation. In the absence of clay, grain size does not affect determination of electrical conductivity for soils. Measurement of the electrical conductivity for a series of dilution ratios provides a reliable means of determining the correct dilution ratio. Measurement of the electrical conductivity of a subset of low water-soil dilution ratios and a …