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Reformed And Traditional Mathematics Teaching Approaches: Are They Related To The Mathematics Achievements Of U.S. Students Across Racial Groups?, Qiang Cheng

UNLV Theses, Dissertations, Professional Papers, and Capstones

Promoting problem-solving and reasoning among all U.S. students and closing mathematics achievement gaps across different racial groups have become important foci in the current U.S. mathematics education reform. Framed through three contentious theoretical assumptions underlying reformed teaching, traditional teaching, and culturally relevant pedagogy, this dissertation investigates the relationship between the two kinds of teaching and the relevant mathematics achievements of students across racial/ethnic groups. The study examines specifically such a relationship drawing on U.S. eighth grade data set from the Trend in International Mathematics and Science Study (TIMSS) 2007 and using a two-level hierarchical linear modeling (HLM) approach. Results from …

Numerical And Experimental Investigation Of The Stability Region For A Cylindrical Ion Trap, Bradley Steven Clarke

UNLV Theses, Dissertations, Professional Papers, and Capstones

The stability diagram provides a useful tool for determining the appropriate AC biased potential to confine ions in an ion trap. Since no analytic solution exists for the cylindrical ion trap's (CIT's) equations of motion, the CIT's stability region is not well known. The objective of this thesis is to determine the stability region for a CIT numerically and experimentally. The equations of motion for ions confined in a CIT are derived and found to be similar to the Mathieu equation, i.e. the equation that describes ion motion in a hyperbolic ion trap (HIT). Because of the similarities in the …

Paleoseismic Study Of The Stewart Valley And Northern Pahrump Segments Of The Stateline Fault System, Nevada, Jonathan Carter

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Stateline fault system (SFS) is a ~200 km long zone of dextral faults running NW along the NV/CA border from Primm, Nevada to Amargosa Valley in the western Central Basin and Range province (CBR). Because of size and proximity, the SFS poses a hazard to the 2.5 million people, most of who live within 10 km, in Pahrump, Nevada and within 40 km, in Las Vegas, Nevada. The goals of this thesis are to (1) understand if the SFS is accommodating faulting slip change in the CBR; (2) test the along strike continuity of the SFS in Pahrump and …

Non-Blocking Concurrent Operations On Heap, Mahesh Acharya

UNLV Theses, Dissertations, Professional Papers, and Capstones

We present a non-blocking implementation for the concurrent Heap data structure in the asynchronous shared memory system. The system may be a traditional one with a single processor with multiple threads, or it may be the one with multiple processors each possibly with multiple threads. Our implementation supports readMin, deleteMin, and insert operations on the heap. The deleteMin and insert operations are non-blocking operations, whereas the readMin is wait-free. One easy approach of using a heap in multi-threading environment could be by locking the entire heap before performing any operation. This would make the implementation very slow to have any …

Wavelets In Intelligent Transportation Systems: Data Compression And Incident Detection, Shaurya Agarwal

UNLV Theses, Dissertations, Professional Papers, and Capstones

Research show that wavelets can be used efficiently in denoising and feature extraction of a given signal. This thesis discusses about intelligent transportation systems(ITS), its requirement and benefits. We explore use of wavelets in intelligent transportation systems for knowledge discovery, compression and incident detection. In the first section of thesis, we focus on the following problems related to traffic matrix: data compression, retrieval and visualization. We propose a methodology using wavelet transform for data visualization and compression of traffic data. Aim is to research on the wavelet compression technique for the traffic data, come up with the performance of various …

Basic Research On The Characteristics Of A Constricted Pulsed Glow Discharge, Sean Daniel Andersen

UNLV Theses, Dissertations, Professional Papers, and Capstones

In certain plasma discharge experiments, it has been observed that under specific conditions a plasma glow discharge column tends to seek the central location of the discharge electrodes away from the electrode edges and chamber walls. Further, the column appears to have the properties of a stabilized equilibrium plasma pinch in a glow (non-arc-like) state. This is unusual since, normally field enhancements occur on edges resulting in arc-like discharge breakdown. Also, the column of plasma that protrudes from the anode emits highly intense, non-uniform light that is uncharacteristically bright for a glow discharge.

The main purpose of this thesis is …

A Survey Of Classical And Recent Results In Bin Packing Problem, Yoga Jaideep Darapuneni

UNLV Theses, Dissertations, Professional Papers, and Capstones

In the classical bin packing problem one receives a sequence of n items 1, 2,..., n with sizes s1, s2, . . . ,sn where each item has a fixed size in (0, 1]. One needs to find a partition of the items into sets of size1, called bins, so that the number of sets in the partition is minimized and the sum of the sizes of the pieces assigned to any bin does not exceed its capacity. This combinatorial optimization problem which is NP hard has many variants as well as online and offline versions of the problem. Though …

Effects Of Moisture Augmentation Of Municipal Solid Waste Through Addition Of Food Waste Or Wastewater Treatment Biosolids On Bio-Gas Formation For Power Generation, Jared Michael Gore

UNLV Theses, Dissertations, Professional Papers, and Capstones

An investigation into the effect of moisture augmentation by manipulation of food waste proportion or wastewater treatment plant biosolids proportion was undertaken to determine the effects on production of methane and other biogases from municipal solid waste (MSW). Laboratory microcosm experiments were performed to determine the effect of various proportions of influent waste streams on the production of biogas. Results indicated that moisture augmentation through the addition of food waste to MSW increases the overall bio-gas and hydrogen gas formed during fermentation. Moisture augmentation through addition of wastewater treatment bio-solids lead to inconclusive results. Addition of food waste to MSW …

Transformative Multicultural Science Curriculum: A Case Study Of Middle School Robotics, Mary Katheryn Grimes

UNLV Theses, Dissertations, Professional Papers, and Capstones

Multicultural Science has been a topic of research and discourse over the past several years. However, most of the literature concerning this topic (or paradigm) has centered on programs in tribal or Indigenous schools. Under the framework of instructional congruence, this case study explored how elementary and middle school students in a culturally diverse charter school responded to a Multicultural Science program. Furthermore, this research sought to better understand the dynamics of teaching and learning strategies used within the paradigm of Multicultural Science. The school's Robotics class, a class typically stereotyped as fitting within the misconceptions associated with the Western …

Degree Constrained Triangulation, Roshan Gyawali

UNLV Theses, Dissertations, Professional Papers, and Capstones

Triangulation of simple polygons or sets of points in two dimensions is a widely investigated problem in computational geometry. Some researchers have considered variations of triangulation problems that include minimum weight triangulation, de-launay triangulation and triangulation refinement. In this thesis we consider a constrained version of the triangulation problem that asks for triangulating a given domain (polygon or point sites) so that the resulting triangulation has an increased number of even degree vertices. This problem is called Degree Constrained Triangulation (DCT). We propose four algorithms to solve DCT problems. We also present experimental results based on the implementation of the …

Evaluating Actinide Sorption To Graphite With Regards To Triso Repository Performance, Corey Christopher Keith

UNLV Theses, Dissertations, Professional Papers, and Capstones

Graphite has the potential for inclusion in nuclear waste for disposal in waste repository settings. Implementation of High Temperature Gas-cooled Reactors contributes to this potential through use of TRISO fuel, if direct disposal of the graphite matrix surrounding the fuel is employed. The inclusion of the large mass and volume in the TRISO fuel waste form differs significantly from used light water reactor fuel waste forms, requiring new performance models to describe the behavior in a repository setting. The purpose of this study is to evaluate the potential for the graphite to improve actinide, specifically uranium and neptunium, retardation from …

Message Passing Algorithm For Different Problems Sum, Mean, Guide And Sorting In A Rooted Tree Network., Sabaresh Nageswara Rao Maddula

UNLV Theses, Dissertations, Professional Papers, and Capstones

In this thesis, we give message passing algorithms in distributed environment for five different problems of a rooted tree having n nodes. In the first algorithm, every node has a value; the root calculates the sum of those values, and sends it to all the nodes in the network. In the second algorithm, the root computes the value of mean of values of all the nodes, and sends it to all nodes of the network. The third algorithm calculates the guide pairs. Guide pair of a node x is an ordered pair (pre_index(x), post_index(x)), where pre_index(x) and post_index(x) are the …

Impact Of Secondary Treatment Types And Sludge Handling Processes On Estrogen Concentration In Wastewater Sludge, Erica J. Marti

UNLV Theses, Dissertations, Professional Papers, and Capstones

Endocrine-disrupting compounds (EDCs), such as estrogen, are known to be present in the aquatic environment at concentrations that negatively affect fish and other wildlife. Wastewater treatment plants (WWTPs) are major contributors of EDCs into the environment. EDCs are released via effluent discharge and land application of biosolids. Estrogen removal in WWTPs has been studied in the aqueous phase; however, few researchers have determined estrogen concentration in sludge. This study focuses on estrogen concentration in wastewater sludge as a result of secondary treatment types and sludge handling processes. Grab samples were collected before and after multiple treatment steps at two WWTPs …

Modeling Of Cellular Automata And Agent-Based Complex Systems, Sara Pallekonda

UNLV Theses, Dissertations, Professional Papers, and Capstones

The term 'complex systems' may sound terrifying whenever you come across it as it depicts an overall collective structure which indeed can live up to its name; but when you comprehend the system at its fundamental level by stripping to its simpler multiple- interacting individual parts, the insights it provides may be used to describe and understand different problems ranging from atomic particles to the economics of societies and evolution. The simple laws can be used to simulate the behaviors of disparate complex systems.

In this thesis, a brief study is done emulating few such complex systems through programming techniques …

Post Processing Of Optically Recognized Text Via Second Order Hidden Markov Model, Srijana Poudel

UNLV Theses, Dissertations, Professional Papers, and Capstones

In this thesis, we describe a postprocessing system on Optical Character Recognition(OCR) generated text. Second Order Hidden Markov Model (HMM) approach is used to detect and correct the OCR related errors. The reason for choosing the 2nd order HMM is to keep track of the bigrams so that the model can represent the system more accurately. Based on experiments with training data of 159,733 characters and testing of 5,688 characters, the model was able to correct 43.38 % of the errors with a precision of 75.34 %. However, the precision value indicates that the model

introduced some new errors, decreasing …

Caught In The Immigration Cross-Fire: The Changing Dynamics Of Congressional Support For Skilled Worker Visas, Maryam Tanhaee Stevenson

UNLV Theses, Dissertations, Professional Papers, and Capstones

This project examines the congressional politics associated with legislation on skilled foreign workers, specifically the H-1B visa which was created by the Immigration Act of 1990. It attempts to explain why legislative policies were successful on a small scale between 1998 and 2004 and completely unsuccessful after 2004.

Specifically, this study is a longitudinal qualitative analysis that uses Krehbiel's pivotal politics model (1998), Cox and McCubbins' party politics models (2005; 2007), Sinclair's (2007) unorthodox lawmaking theory, and Gilmour's (1995) strategic disagreement model to explain four key periods of H-1B legislation: (1) the passage of the Immigration Act of 1990; (2) …

Image Processing With Cuda, Jia Jun Tse

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis puts to the test the power of parallel computing on the GPU against the massive computations needed in image processing of large images. The GPU has long been used to accelerate 3D applications. With the advent of high level programmable interfaces, programming to the GPU is simplied and is being used to accelerate a wider class of applications. More specically, this thesis focuses on CUDA as its parallel programming platform.

This thesis explores on the possible performance gains that can be achieved by using CUDA on image processing. Two well known algorithms for image blurring and edge detection …

Node Filtering And Face Routing For Sensor Network, Umang Amatya

UNLV Theses, Dissertations, Professional Papers, and Capstones

Greedy forward routing and face routing algorithms have been extensively used for sending messages in sensor networks. In this thesis, we consider the problem of filtering redundant nodes in a sensor network as a pre-processing step for face routing. We propose two algorithms for identifying redundant nodes. We test the performance of proposed filtering algorithms on generated networks. The prototype algorithm for testing the proposed algorithms has been implemented in the Java programming language. Experimental investigation shows that the proposed filtering algorithms are effective in removing redundant nodes without compromising the network connectivity.

Petrogenesis Of The Linked River Mountains Volcanic Section And Wilson Ridge Pluton, Denise Kelly Honn

UNLV Theses, Dissertations, Professional Papers, and Capstones

The River Mountains (RM) volcanic suite and Wilson Ridge pluton (WRP), in the northern Colorado River extensional corridor of southern Nevada and northwestern Arizona, provide an ideal opportunity to investigate one of the most fundamental questions in igneous petrology: Do volcanic rocks erupt from subjacent plutons and do plutons vent to form volcanic fields? The RM volcanic suite (14.47± 0.26 to 12.66 ± 0.54 Ma; uncertainties are 2sigma) consists of a stack of andesite and rhyolite sills beneath a stratovolcano that primarily erupted dacite with lesser volumes of basalt and rhyolite. This volcanic suite is cored by a multiphase quartz …

Effects Of Teacher-Led Reading Teaching Activities And Student Independent Reading On Fourth Grade Ell Student Reading Comprehension, Siping Liu

UNLV Theses, Dissertations, Professional Papers, and Capstones

This dissertation study examines the effects of four teacher-led reading activities recommended by the reading teaching policy and student independent reading activity on the development of English language learners (ELL) reading proficiency at fourth grade in U.S. elementary schools. In this study, I first introduce the significance of studying the relationship between ELL reading development and the reading teaching activities recommended for ELL students' reading development and discuss the potential conflicts of the ideas underlying these teaching activities with some assumptions underlying the second language theories. With such an introduction as a base, I raise some research questions for my …

Cpu Scheduling For Power/Energy Management On Heterogeneous Multicore Processors, Rajesh Patel

UNLV Theses, Dissertations, Professional Papers, and Capstones

Power and energy have become increasingly important concerns in the design and implementation of today's multicore/manycore chips. Many methods have been proposed to reduce a microprocessor's power usage and associated heat dissipation, including scaling a core's operating frequency. However, these techniques do not consider the dynamic performance characteristics of an executing process at runtime, the execution characteristics of the entire task to which this process belongs, the process's priority, the process's cache miss/cache reference ratio, the number of context switches and CPU migrations generated by the process, nor the system load. Also, many of the techniques that employ dynamic frequency …

Analysis Of Bank Failure And Size Of Assets, Guancun Zhong

UNLV Theses, Dissertations, Professional Papers, and Capstones

The financial health of the banking industry is an important prerequisite for economic stability and growth. Bank failures in the United States have run in cycles largely associated with the collapse of economic bubbles. The number of bank failures has increased dramatically over the last thirty years (Halling and Hayden, 2007). In this thesis, we try to address the following two questions: 1) What is the relationship, if any, between a bank's asset size and its likelihood of failures? 2) How can we use statistical tools to predict the numbers of bank failures in the future? Various modeling techniques are …

Evaluation Of Possible Source Rocks In Northern Nye County, Nevada: Implications For Hydrocarbon Exploration, Inessa Yurchenko

UNLV Theses, Dissertations, Professional Papers, and Capstones

The presence of oil outside of Railroad Valley, northern Nye County has sparked the interest of exploration companies in Nevada. The geology in this region is very complex and the level of petroleum exploration is low. In order to understand the distribution of oil, a complete petroleum systems analysis is required. Previous studies confirmed that the Mississippian Chainman Shale and Cretaceous to Paleocene Sheep Pass Formation, Member B are source rocks. However, a number of other possible source rocks exist in northern Nye County, but they are not confirmed because of incomplete datasets. The goal of this thesis project is …

Determining The Motion And Location Of The Frenchman Mountain Fault, Las Vegas, Nevada: A Paired Basin Analysis And Structural Analysis, Laura Margaret Eaton

UNLV Theses, Dissertations, Professional Papers, and Capstones

Understanding the evolution of large-scale fault systems remains a challenge to geologists and is of critical importance in understanding the dynamics of larger plate tectonic interactions. I mapped the southwestern Frenchman Mountain Fault (FMF), conducted a basin analysis of units in the footwall of the fault, and measured kinematic indicators along the fault zone in order to constrain fault offset, magnitude, and timing in an attempt to further our understanding of these systems.

My findings include: 1) the presence of vertical and sub-vertical slickenlines on southwest dipping fault surfaces indicative of normal sense offset; 2) relatively little lateral variation in …

Special Edition: National Clean Energy Summit, Nevada Institute For Renewable Energy Commercialization (Nirec)

Nevada Newsflash

Young Professionals in Energy–Nevada recently gathered for an up-to-the-day report on renewable energy at UNLV’s LEED-certified Science and Engineering Building given by Associate Vice President for Interdisciplinary Research Tom Piechota—just hours after President Obama appeared on campus in support of higher education.

Piechota, who also heads UNLV’s Urban Sustainability Initiative (and is this author’s boss in that capacity), covered all the overlapping curriculum and research going on. Of about 400 total research projects university-wide, 142 involve clean energy, water or environmental science – some at the nexus of all three. Department of Energy remains the biggest source of funding, along …

Take Pride In America Phase Iii: Quarterly Progress Report, Period Covering April 25, 2012-July 24, 2012, Margaret N. Rees

Anti-littering Programs

• The GIS database continued to be populated with data.
• Hector’s Helpers added an additional youth group.
• The new website launched and social media efforts began.
• The pilot testing of the litter monitoring program continued.

The University of Nevada Las Vegas Public Lands Institute (PLI) designed the Take Pride in America (TPIA) Phase III work plan based on the strategic plan developed by the Southern Nevada Agency Partnership (SNAP) anti-litter and desert dumping team during Phase II of the program.

Angular And Dynamical Properties In Resonant Inelastic X-Ray Scattering: Case Study Of Chlorine-Containing Molecules, Renaud Guillemin, Wayne C. Stolte, Loic Journel, Stephane Carniato, Maria Novella Piancastelli, Dennis W. Lindle, Marc Simon

Chemistry and Biochemistry Faculty Research

Polarization-dependent resonant inelastic x-ray scattering (RIXS) has been shown to be a probe of molecular-field effects on the electronic structure of isolated molecules. In this experimental analysis we explain the linear dichroism observed in Cl 2p polarized RIXS following Cl 1s excitation of a series of chlorofluoromethanes (CF3Cl, CF2Cl2, CFCl3, and CCl4) as due to molecular-field effects, including singlet-triplet exchange. We present an approach to extract directly the 2p inner-shell electronic state populations from the experimental measurements. Using the angular properties of the measured KV emission we also are able to determine the value of the polarization anisotropy parameter βp …

Walking Box Ranch Planning And Design Quarterly Progress Report: Period Ending July 10, 2012, Margaret N. Rees

Walking Box Ranch

• BLM informed UNLV that after investigating a concession contract as the appropriate BLM document for the future operating partner, they have concluded that an operating agreement is the preferred document and they are proceeding to complete such an agreement as soon as possible.
• Following a visit to the ranch with BLM, UNLV has completed temporary repairs to ranch house windows, which should mitigate deterioration of the ranch house from water
• UNLV participated in a one-half day meeting with BLM to review Condit’s Extended Content Package #1. As a result of the lack of progress by Condit, UNLV was requested to …

Building Trust And Collaboration With Rural Minorities: Experiences With Minority Farmers In The Mississippi Delta, Ari Mwachofi

Journal of Health Disparities Research and Practice

The paper focuses on the question “What research approach is effective in building trust with minority farmers?” The question is answered through a documentation of researchers’ experiences building trust and collaboration with minority farmers in the lower Mississippi Delta. The researchers applied two research paradigms -logical positivism and paradigm of praxis. The logical positivism research approach was met with mistrust and open animosity and had to be abandoned for one based on the paradigm of praxis. Through this approach, and cognizant of the historical-social-political context, the researchers included insiders from the focus population as collaborators and researchers and succeeded in …

Pyramids To Players Clubs: The Battle For Competitive Advantage In Las Vegas, Oliver Lovat

Occasional Papers

The evolution of the Las Vegas casinos from owner operator to the institutionally financed and corporately managed casino-resort has been the predominant feature of the evolution of the US Gaming market in the past 30 years. This paper examines the strategic frameworks used by Las Vegas casino resorts and identifies the drivers for competitive advantage moving forward.