Physical Sciences and Mathematics Commons^™

Reactions Of Alcohols And Organophosphonates On Tungsten Trioxide Epitaxial Films, Shuguo Ma

Electronic Theses and Dissertations

The adsorption, diffusion, reactions, and desorption of water, alcohols, ethers, and an organophosphonate were studied using calibrated thermal desorption spectroscopy (CTDS) on thin film WO₃(OOl) surfaces grown epitaxially on a single crystal α- Al₂O₃(li02) (sapphire) substrate. The studies were conducted on oxidized and reduced surfaces, which were characterized by x-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS). The desorption spectra for molecular desorption of all of these molecules shifted to lower temperature with increasing coverage, and had overlapping tails on the high temperature side. Monte Carlo simulations show that this typical desorption shape …

Relationship Between Alkaline Pulp Yield And The Mass Fraction And Degree Of Polymerization Of Cellulose In Pulp, Mehmet Sefik Tunc

Electronic Theses and Dissertations

Wood as a raw material is generally the dominant cost factor for the production of chemical pulp. Therefore, an increase in pulp yield has a major impact on the competitiveness of a mill. In order to optimize pulp yield, for example by changing operating conditions, a mill must be able to monitor the yield accurately. However, an accurate "real-time" pulp yield measurement method is not available at the present time. Pulping yield is presently measured from the amount of pulp produced from a given quantity of wood consumed over a 3 to 6 month time frame. This method is obviously …

The Short And Long-Term Effects Of Herbicide Application In Maine Clearcuts On Ant Communities (Hymenoptera: Formicidae), Kerry Frances Lough

Electronic Theses and Dissertations

The short and long-term effects of glyphosate application on the diversity and abundance of ants in Maine clearcuts was assessed in a two-year study. Glyphosate is applied to release coniferous trees from suppression by competition with deciduous vegetation after a forest is clearcut. Previous research indicates glyphosate has limited immediate and long-term effects on non-target fauna, though specific species can be affected. Limited research on the effects of herbicides on insects indicates some initial decrease in insect populations. Beneficial insects, such as pollinators and predators, positively influence the forest ecosystem, but little research has examined the effects of herbicide application …

Guest Editorial: Text And Web Mining, Ah-Hwee Tan, Philip S. Yu

Research Collection School Of Computing and Information Systems

Text mining and web mining are two interrelated fields that have received a lot of attention in recent years. Text mining [1, 2] is concerned with the analysis of very large document collections and the extraction of hidden knowledge from text-based data. Web mining [3] refers to the analysis and mining of all web-related data, including web content, hyperlink structure, and web access statistics.

Pair Programming To Facilitate The Training Of Newly-Hired Programmers, Mark Anthony Poff

Theses and Dissertations

Pair programming is touted by some software professionals as a style which allows developers to produce superior code in less time, and with fewer defects, than code produced by individuals. However, the acclaim for the pair methodology is not universal; some see it was a waste of effort which produces marginal improvements. Reported experiments which obtain quantitative results have typically been performed in an educational environment, and may not reflect actual workplace conditions. This thesis reports on an experiment using pair programing in an industrial setting. Its goal is to determine if this programming style can be used to increase …

A Taxonomy Of E-Commerce Risks And Failures, Giridharan Vilangadu Vijayaraghavan

Theses and Dissertations

Imagine being asked to test an e-commerce website. If you haven't tested one before, where would you start? What experience would you draw on? Where would you look for more information? Even very experienced testers have blind spots when they try to generate test ideas for an application that they have not tested. This thesis presents a simple outline that will help you generate test ideas and limit your blind spots. The outline is the result of about 18 months of research on classifying e-commerce related failures and risks. The result has 45 top-level categories and 700+ examples of errors …

A Machine Learning Approach To Detecting Attacks By Identifying Anomalies In Network Traffic, Matthew Vincent Mahoney

Theses and Dissertations

The current approach to detecting novel attacks in network traffic is to model the normal frequency of session IP addresses and server port usage and to signal unusual combinations of these attributes as suspicious. We make four major contributions to the field of network anomaly detection. First, rather than just model user behavior, we also model network protocols from the data link through the application layer in order to detect attacks that exploit vulnerabilities in the implementation of these protocols. Second, we introduce a time-based model suitable for the bursty nature of network traffic: the probability of an event depends …

Migration From A Waterfall/Non Sei Cmm Compliant Process To A Rup/Sei Cmm Compliant Process, Chad Amos Chamberlin

Theses and Dissertations

Software Life Cycle processes play a key role in the successful development of software products. Software processes continue to evolve as the field of software development progresses toward being a true engineering discipline. This theses has two objectives: (1) To apply software engineering knowledge gained during the pursuit of this degree toward the design and development of a complete, Software Engineering Institute (SEI) Capability Maturity Model (CMM) compliant process for the design phase of the software lifecycle. (2) To evaluate a Waterfall Lifecycle Model vs. an Iterative Lifecycle Model and compare SEI CM compliant processes to non-SEI CM compliant process …

Strategies For Testing Web Applications From The Client Side, Lawrence Thaddeus Prevatte Iii

Theses and Dissertations

This thesis is presented on the testing of computer software designed to operate over the World Wide Web. A fault model to guide Web software testing is developed, the components of Web software applications and their interfaces to each other are defined, and strategies to test Web software are discussed. The approach taken is to simplify the concepts of testing Web software to aid in a methodical treatment of the techniques required to conduct meaningful tests using a minimum amount of testing resources, conducting the tests from the client side of the Web application during the “ready for users” or …

Design And Implementation Of Exception Handling With Zero Overhead In Functional Languages, Ramon Zatarain Cabada

Theses and Dissertations

This dissertation considers the implementation of exception handling specifically for functional languages. Some implementations incur overhead for using exception handling even when no exceptions are raised. We show the results of some experiments with the SML of New Jersey and OCAML compilers, two well-known compilers for functional languages. Imperative languages avoid this overhead by using tables, but the approach does not easily transfer to compilers using continuation passing style (CPS). This dissertation proposes an approach that works with CPS compilers like SML of New Jersey. We first present an experiment where programs in SML are written with and without exception …

An Individual- Based Model For The Toxic Algae Species Pseudo-Nitzschia Multiseries, Maria Siopsis

Doctoral Dissertations

In 1987 an outbreak of a previously unobserved disease occurred in Canada and was traced back to the toxin domoic acid produced by the diatom Pseudo-nitzschia multiseries. Since then, fisheries closures due to domoic acid have occurred worldwide. Pseudo-nitzschia species produce domoic acid under nutrient stress, including low silicon or phosphorus under high nitrogen conditions. However, it is still unclear what conditions cause the dangerously high levels that have sometimes been observed. We present an individual-based algae model detailing the physiology of an algal cell with a focus on nutrient and energy flows to delineate the causes of domoic acid …

Thermal Evolution Of Planetesimals And Protoplanets In The Terrestrial Planet Region: Code Optimization And Implementation On A Distributed Grid Using Netsolve, Amitabha Ghosh

Masters Theses

A code for asteroidal heat transfer and growth is optimized for performance. The Gauss elimination routine for the solver is replaced by a sparse matrix routine. Finite element matrix assembly operations are rewritten to reduce operations involving 3D arrays to 1D. Advantage is taken of the sparse matrix structure of finite element matrices in reducing 2D arrays to 1D. The number of vector touches are reduced to the extent possible, by carrying over statements from one iteration to the next. The number of do loops are reduced by merging several do loops into one. The optimization reduced the CPU time …

Fluctuations In Chinook Salmon (Oncorhynchus Tshawytscha) Counts At Three Lower Columbia River Spawning Sites, Eric Michael Loomis

UNLV Theses, Dissertations, Professional Papers, and Capstones

Several hypotheses were developed to explore the pronounced increase in Chinook salmon (Oncorhynchus tshawytscha) returning to spawning grounds at the Cowlitz, Kalama, and Lewis Rivers, three tributaries of the lower Columbia River. The study was conducted using data compiled over a ten-year span from 1991-2001. Preliminary indications are that trends in climate are linked to these increases, with the absence of El Niño events and fluctuations in winter precipitation as likely explanations of these phenomena. The unique nature of Chinook life cycles causes them to utilize a variety of habitats that require ideal conditions for maximum survival rates. Correlations between …

Consumptive Water Use At The Mirage Hotel And The Mandalay Bay Resort & Casino In Las Vegas, Nevada, Johann A. Feller

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Las Vegas Valley is one of the driest regions in the southwest United States. Due to limited water supplies from the Colorado River, rainfall, and groundwater sources, the water requirements of the valley’s growing population is slated to surpass the current available water supply. The purpose of this comparative study is to quantify the amount of consumptive water used at a major Las Vegas resort/casino in one year. This, being of importance, because of the resort/casino industry’s role as one of the largest, most visible, and most resource intensive industries in the Las Vegas valley. The goal of this …

Risk Of Radiation Exposure From The Transportation Of High-Level Nuclear Waste, Lawrence Banks

UNLV Theses, Dissertations, Professional Papers, and Capstones

Transportation of high-level nuclear waste poses a potential risk of exposure from radiation to people of Las Vegas and the surrounding environment. 77,000 metric tons of waste is scheduled to start arriving at Yucca Mountain in 2010. For 24 years legal weight trucks will transport high-level nuclear waste through 109 cities with populations over 100,000. The population of Las Vegas is over 400,000 people. In all, legal weight trucks will cross 43 states traveling millions of highway miles (see appendix B). The U. S. Department of Energy estimates expected radiological risk from accidents would be no higher than 0.003 latent …

A Coarse-Grain Parallel Implementation Of The Block Tridiagonal Divide And Conquer Algorithm For Symmetric Eigenproblems., Robert M. Day

Masters Theses

Cuppen’s divide and conquer technique for symmetric tridiagonal eigenproblems, along with Gu and Eisenstat’s modification for improvement of the eigenvector computation, has yielded a stable, efficient, and widely-used algorithm. This algorithm has now been extended to a larger class of matrices, namely symmetric block tridiagonal eigenproblems. The Block Tridiagonal Divide and Conquer algorithm has shown several characteristics that make it suitable for a number of applications, such as the Self-Consistent-Field procedure in quantum chemistry.

This thesis discusses the steps taken to implement a coarse-grain parallel version of the Block Tridiagonal Divide and Conquer algorithm, suitable for a parallel supercomputer or …

Sparta: A Graphical User Interface For Malicious Mobile Code Fingerprint-Ing., Victor P. De Cerqueira

Masters Theses

This thesis introduces and describes SPARTA (for Stochastic Profiling Application for the Rendering of Trees and Automata), a graphical user interface used as a front end to a collection of tools written in C that collectively convert a log of registry system calls performed by an application into binary descriptions of PSTs (for Probabilistic Suffix Trees) and PSAs (for Probabilistic Suffix Automata), which are models used to represent application behavior on Windows-based systems. SPARTA works by rendering these binary descriptions into graphical form, showcasing a variety of features intended to make the user interaction with PSTs and PSAs informative and …

Asymmetric Transfer Hydrogenation Of Allylic Alcohols, Joseph M. Laquidara

Seton Hall University Dissertations and Theses (ETDs)

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Results Of The City Of Tampa Surface Water Compliance Monitoring Program For The Year 2002 And Examination Of Long-Term Water Quality And Biological Indicator Trends In Hillsborough Bay, City Of Tampa Department Of Sanitary Sewers

Reports

This report is submitted to Florida Department of Environmental Regulation (FDER) to satisfy the requirements set forth in specific condition No. 10 of Howard F. Curren WWTP permit FL0020940-001-DW1P. The report is based on data obtained by the City of Tampa (COT) surface water compliance monitoring program approved on August 14, 2000 by the FDEP. The report also includes examination of long-term trends for water quality parameters and biological indicators collected by the City of Tampa Bay Study Group and the Environmental Protection Commission of Hillsborough County (EPC).

Seagrass And Caulerpa Monitoring In Hillsborough Bay Fourteenth Annual Report, City Of Tampa Department Of Sanitary Sewers

Reports

This is the fourteenth annual report submitted to the FDEP to satisfy the requirements set forth in Reclaimed Water and Effluent Limitations and Monitoring Requirements condition #10 of the Howard F. Curren WWTP operation permit FL0020940-001-DW1P.

The City of Tampa, Department of Sanitary Sewers, Bay Study Group (BSG), created in 1976, has monitored the effects of pollution abatement that occurred in Hillsborough Bay when the Howard F. Curren Advanced Wastewater Treatment Plant (formerly Hookers Point Wastewater Treatment Plant) was upgraded to secondary treatment in 1978 and advanced treatment in 1979. During the mid 1980's, water quality improvements and evidence of …

Greenhouse, Land Management And Carbon Sequestration In Western Australia, Department Of Agriculture And Food, Wa, Department Of Conservation And Land Management, Forrest Products Commission, Department Of Environment, Water And Catchment Protection, Anne Bennett

Agriculture reports

This report examines options for greenhouse emissions abatement by changing land management practices and establishing terrestrial organic carbon sinks in Western Australia.

Sustainability Issues For Agriculture In Western Australia, Anne Bennett, Ross Kingwell, Ross George

Agriculture reports

This paper describes briefly the main challenges to the sustainability of agriculture in Western Australia and outlines some means of responding the the challenges: market-based approaches; agricultural and environmental research and development; accelerated adjustment; and global and national policy initiatives. Challenges include: land resource quality (salinity, soil acidity), biodiversity, greenhouse gas emissions, climate change, water availability, food safety, and pests and diseases.

Investigations Of Nonstandard, Mickens-Type, Finite-Difference Schemes For Singular Boundary Value Problems In Cylindrical Or Spherical Coordinates, Ron Buckmire

Ron Buckmire

No abstract provided.

The Zeeman Effect In The Sobolev Approximation: Applications To Spherical Stellar Winds., R. Ignace, K. G. Gayley

Richard Ignace

Modern spectropolarimeters are capable of detecting subkilogauss field strengths using the Zeeman effect in line profiles from the static photosphere, but supersonic Doppler broadening makes it more difficult to detect the Zeeman effect in the wind lines of hot stars. Nevertheless, the recent advances in observational capability motivate an assessment of the potential for detecting the magnetic fields threading such winds. We incorporate the weak-field longitudinal Zeeman effect in the Sobolev approximation to yield integral expressions for the flux of circularly polarized emission. To illustrate the results, two specific wind flows are considered: (i) spherical constant expansion with v(r) = …

The Conspicuous Absence Of X-Ray Emission From Carbon-Enriched Wolf-Rayet Stars., L. M. Oskinova, R. Ignace, W.-R. Hamann, A. M. T. Pollock, J. C. Brown

Richard Ignace

The carbon-rich WC5 star WR 114 was not detected during a 15.9 ksec XMM-Newton observation, implying an upper limit to the X-ray luminosity of L-X less than or similar to 2.5 x 10(30) erg s(-1) and to the X-ray to bolometric luminosity ratio of L-X/L(bo)l less than or similar to 4 x 10(-9). This confirms indications from earlier less sensitive measurements that there has been no convincing X-ray detection of any single WC star. This lack of detections is reinforced by XMM-Newton and Chandra observations of WC stars. Thus the conclusion has to be drawn that the stars with radiatively-driven …

On A Conjecture Of Auslander And Reiten, Craig Huneke, Graham J. Leuschke

Mathematics - All Scholarship

In studying Nakayama's 1958 conjecture on rings of infinite dominant dimension, Auslander and Reiten proposed the following generalization: Let Lambda be an Artin algebra and M a Lambda-generator such that Extⁱ_Lambda(M,M)=0 for all i \geq 1; then M is projective. This conjecture makes sense for any ring. We establish Auslander and Reiten's conjecture for excellent Cohen-Macaulay normal domains containing the rational numbers, and slightly more generally.

Remotely Forced Nearshore Upwelling In Southern California, James M. Pringle, K Riser

Earth Sciences

[1] Alongshore winds in Baja California strongly influence nearshore temperatures hundreds of kilometers to the north at Point Loma, San Diego, California, on timescales of a week to a year. The time lag between wind and temperature is consistent with first mode coastal trapped wave phase speed. The nearshore cross-shelf circulation forced by the coastal trapped waves is, at least much of the year, oppositely directed at the surface and bottom. No relation is found between the winds and temperature for periods greater than a year. It is argued that similar results may be found elsewhere in the Southern California …

Ua8 Ssn Protection Committee Recommendations, Wku Information Technology

WKU Archives Records

Recommendations of the Social Security Number Protection Committee.

A Performance-Driven Framework For Customizing Csp Middleware Support, Guoliang Xing

All Computer Science and Engineering Research

A Distributed Constraint Satisfaction Problem (DCSP) aims to find consistent assignments of values to a set of variables distributed on multiple nodes. Despite its simple definition, DCSPs can model a broad variety of traditional artificial intelligence problems. Furthermore, many problems found in emerging sensor-actuator networks can be formalized to DCSPs. However, due to the platform limitations of networked embedded systems such as sensor-actuators networks, building real-world applications for solving DCSPs not only requires the improved DCSP algorithms but also novel system approaches. This thesis first develops a performance-driven middleware framework for solving DCSP problems. Then the prototype system built with …

Developing A Sensing System For The Measurement Of Oxygen Concentration In Liquid Pb-Bi Eutectic: Quarterly Progress Report (Feb. 01 – Apr. 30, 2003), Yingtao Jiang, Bingmei Fu, Woosoon Yim

Transmutation Sciences Materials (TRP)

We received most of the components, everything except the customized and outsourced stirrer, for the new apparatus for oxygen measurement/calibration. Thus far, most of the machining work has been completed. The LaveView module used for the data collection and the control of the apparatus has been tested. 2-D simulation work has been performed using FEMLAB.