Physical Sciences and Mathematics Commons^™

Watershed Data Organization And Project Prioritization, Joshua Darling

Environmental Science and Management Professional Master's Project Reports

The Oregon Coastal Salmon Restoration Initiative (OCSRI) (1197) is the first of several documents that have come to be known as the Oregon Plan for Salmon and watersheds (OPSW). The OCSRI indicates that protection and restoration of salmonid stocks and improvement in water quality are the main roles for state agencies within the Oregon Plan (EO09-01: 1(b)). The Oregon Plan specifies particular actions that state agencies must take to aid in salmon recovery and also directs the Governors Watershed Enhancement Board (GWEB) to help create and organize watershed councils responsible for assessing conditions and determining priorities for watershed health. A …

Urbanization And Its Relationship To Water Quality Within The Bronson Creek Watershed, Jason Cristopher Creech

Environmental Science and Management Professional Master's Project Reports

A watershed analysis project was undertaken to investigate the impact of urbanization on the water quality with Bronson Creek; a small urban stream in the metropolitan area of Portland, Oregon. Total Maximum Daily Loads (TMDLs) have been established for several water quality parameters within the watershed.

Water quality data were collected at nine sampling along Bronson Creek by Clean Water Services, a local public utility charged with storm water management and water quality protection duties. Only seven water quality parameters were included in the analysis; they were 1) temperature, 2) total phosphorous, 3) ortho-phosphate, 4) ammonia, 5) total nitrogen, 6) …

One Hundred Years Of Environmental Pollution At Chattanooga Creek: A Review Of Selected Studies, Connie C. Kennedy

Masters Theses and Doctoral Dissertations

When studying local Chattanooga history, one cannot ignore the issues of pollution in the city and the environmental degradation of the Chattanooga Creek. Throughout the past one hundred years, the Chattanooga Creek was subjected to multiple inputs of pollutants, beginning with animal wastes in the early 1900s, coal tar from government operated coke ovens during the WWII era, and large amounts of industrial wastes in the latter part of the century. Today the creek is officially closed to the public but the status of its water and sediments remains dangerously polluted. Several research projects throughout the past two decades have …

Northumberland County Dune Inventory, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, George R. Thomas, Walter L. Priest, Linda M. Meneghini, Thomas A. Barnard, Sharon A. Killeen

Reports

Northumberland County, Virginia is located on the western shore of Chesapeake Bay. Primary tidal shorelines extend from Smith Point southward to Indian Creek along Chesapeake Bay and northwestward up the Potomac River to the Yeocomico River. Fifty-nine (59) dune sites were identified along the Northumberland County shoreline. Thirty seven (37) were located on Chesapeake Bay and the remainder along the Potomac River. It is the intent of this publication to provide the user with information on the status of dunes in Northumberland County. This information comes from research performed in 1999 and 2000 which was presented in a report entitled …

The Virtual Beta: An Interactive Fish Using Java Script And Css, Lauren B. Carroll '03

Honors Projects

My first version of the fish was written in C, because it was the language I was studying at the time. I wanted something that more people could view easily, however and one that could manage images more simply than C. I ended up choosing ]avaScript. At first I tried to translate my C program directly to ]avaScript, but I soon found this was too complex a task.

An Analysis Of Materials Suitable For Use As A Pitfall Trap In A Desert Environment, R. Renee Brown

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study is to identify a type of pitfall trap container that can withstand the temperature extremes of the Mojave Desert in which the terrestrial, or above ground, drift fence with pitfall traps will be utilized for trapping reptiles. A pitfall trap is a container, such as a plastic bucket with a plastic lid, that is buried in the ground up to the lip of the bucket and used to catch small ground dwelling fauna that fall into the trap. Many different pitfall trap materials have been utilized in the trapping of small ground-dwelling fauna. Plastic has …

Modes In A Non-Neutral Plasma Of Finite Length, M = 0,1, S. Neil Rasband, Ross L. Spencer

Faculty Publications

For realistic, cold equilibria of finite length representing a pure electron plasma confined in a cylindrical Malmberg–Penning trap, the mode spectrum for Trivelpiece–Gould, m=0, and for diocotron, m=1, modes is calculated numerically. A novel method involving finite elements is used to successfully compute eigenfrequencies and eigenfunctions for plasma equilibria shaped like pancakes, cigars, long cylinders, and all things in between. Mostly sharp-boundary density configurations are considered but also included in this study are diffuse density profiles including ones with peaks off axis leading to instabilities. In all cases the focus has been on elucidating the role of finite length in …

A Geochemical Survey Of The Natural Waters Of Belize, Central America, Anthony D. Marfia

Masters Theses

A geochemical survey of the natural waters in Belize, Central America was carried out to compliment routine water quality analysis and to identify processes affecting water quality. The objective of this research was to provide a geochemical assessment of natural waters throughout Belize by examining select major ions (Ca²⁺, Mg²⁺ , SO₄^2-), and stable isotopes of carbon (¹³C), oxygen (¹⁸O) and hydrogen (²H).

The dominant geology relevant to this investigation comprises a varied landscape of carbonates and elastic sediments in a subtropical rainforest/savannah climate. Stable oxygen and hydrogen …

Evidence For Small-Scale Mantle Convection In The Upper Mantle Beneath The Baikal Rift Zone, Stephen S. Gao, Kelly H. Liu, Paul M. Davis, Philip D. Slack, Yuliy A. Zorin, Valentina V. Mordvinova, Vladimir M. Kozhevnikov

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Inversion of teleseismic P wave travel time residuals collected along a 1280-km-long profile traversing the Baikal rift zone (BRZ) reveals the existence of an upwarped lithosphere/asthenosphere interface, which causes a travel time delay of about 1 s at the rift axis ("central high"). An area with early arrivals relative to the stable Siberian platform of up to 0.5 s is observed on each side of the rift, about 200 km from the rift axis ("flank lows"). While the location of the central high is approximately fixed in the vicinity of the rift axis, those of the flank lows vary as …

Fisheries Research Report No. 140 - The Western Rock Lobster Fishery 1997/98 To 1998/99, C F. Chubb, E H. Barker

Fisheries research reports

This report is the latest in a series covering the West Coast Rock Lobster Managed Fishery (formerly the West Coast Rock Lobster Limited Entry Fishery), Western Australia’s largest and most valuable fishery. These reports form an historical record of fishery data and information documented season by season for use by industry and research personnel now and in the future. The reports provide information on catch, fishing effort and biology; value of the product and licences; input costs (fuel, bait, etc.); changes in fishing practices, gear, technology and boats and management/legislative changes. By necessity, the information contained herein is summarised from …

Measuring The Environmental Attitudes Of Children In Grade 4: A Study In Clark County, Amir Khawaja

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to examine whether there is an increased positive effect on children's attitude when they are taught about the environment in an outdoor/hands-on setting versus an indoor traditional classroom setting. The study focused on grade four students in the Clark County School District. Half of the group was comprised of students that were taught about the environment using traditional classroom learning materials while the other half consisted of students that were taught using the outdoor/hands-on approach. In order to test the results, the students were given a survey. The questionnaire created by Malkus and Musser …

Groundwater Study Of The Goomalling Townsite, Russell John Speed

Resource management technical reports

A groundwater study was undertaken in the townsite of Goomalling, Western Australia. The study consisted of a drilling program to install a network of groundwater monitoring bores. This report documents background information for the town and its catchment, the hydrogeological investigations, conclusions on the town's salinity risk and recommendations for improved water management.

Measurement Of Event Shapes In Deep Inelastic Scattering At Hera, S. Chekanov, D. Krakauer, J. H. Loizides, S. Magill, B. Musgrave, J. Repond, R. Yoshida, Margarita C. K. Mattingly, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, A. Margotti, R. Nania, F. Palmonari, A. Pesci, G. Sartorelli, A. Zichichi, G. Aghuzumtsyan, D. Bartsch

Faculty Publications

Inclusive event-shape variables have been measured in the current region of the Breit frame for neutral current deep inelastic ep scattering using an integrated luminosity of 45.0 pb-1 collected with the ZEUS detector at HERA. The variables studied included thrust, jet broadening and invariant jet mass. The kinematic range covered was 10 < Q2 < 20480 GeV2 and 6 × 10-4 < x < 0.6, where Q2 is the virtuality of the exchanged boson and x is the Bjorken variable. The Q dependence of the shape variables has been used in conjunction with NLO perturbative calculations and the Dokshitzer-Webber non-perturbative corrections ('power corrections') to investigate the validity of this approach.

Development Of Kohonen Neural Network Application As A Pattern Recognition System For An Electronic Nose, Lori Lynn Evesque

Masters Theses

Electronic noses are used to identify and characterize unknown odors in industry. Chemometrics and neural network algorithms are used as pattern recognition systems for these devices. Experimentation with Kohonen clustering as the pattern recognition system for electronic noses was not noted prior to 1997. [BEG] This thesis investigated the use of a Kohonen neural network algorithm as a clustering algorithm for electronic nose data using the chemometrics algorithms built into the electronic nose as a performance standard. A secondary aim was to improve the clustering and identification capabilities of the Kohonen network.

The unsupervised Kohonen network was not able to …

Efficient Native Xml Storage System (Enaxs), Khin-Myo Win, Wee-Keong Ng, Ee Peng Lim

Research Collection School Of Computing and Information Systems

XML is a self-describing meta-language and fast emerging as a dominant standard for Web data exchange among various applications. With the tremendous growth of XML documents, an efficient storage system is required to manage them. The conventional databases, which require all data to adhere to an explicitly specified rigid schema, are unable to provide an efficient storage for tree-structured XML documents. A new data model that is specifically designed for XML documents is required. In this paper, we propose a new storage system, named Efficient Native XML Storage System (ENAXS), for large and complex XML documents. ENAXS stores all XML …

City Of Hampton Dune Inventory, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, George R. Thomas, Linda M. Meneghini, Thomas A. Barnard, Sharon A. Killeen

Reports

The City of Hampton, Virginia is located along the western shore of Chesapeake Bay. Six dune sites were identified along Hampton's shoreline by site visits performed in 1999 and 2000. Most of the dunes are located along Chesapeake Bay between Old Point Comfort and Factory Point except of one site on Hampton Roads. It is the intent of this publication to provide the user with information on the status of dunes in the City of Hampton. This information comes from research performed in 1999 and 2000 which was presented in a report entitled "Chesapeake Bay Dune Systems: Evolution and Status".

Mathews County Dune Inventory, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, George R. Thomas, Linda M. Meneghini, Thomas A. Barnard, Sharon A. Killeen

Reports

Mathews County, Virginia is located along the western shore of Chesapeake Bay and is at the eastern end of Virginia’s Middle Peninsula (Figure 1). Eighteen dune sites were identified along the Mathews County shoreline by site visits performed in 1999 and 2000. Of those 18 sites, 13 are located on Chesapeake Bay (Figure 2). It is the intent of this publication to provide the user with information on the status of dunes in Mathews County. This information comes from research performed in 1999 and 2000 which was presented in a report entitled “Chesapeake Bay Dune Systems: Evolution and Status (Hardaway …

Water Transfers And Marketing In Nebraska, J Michaeil Jess

Conservation and Survey Division

No abstract provided.

2003 Changes To Water Transfer Law In Nebraska - Addendum, J Michael Jess

Conservation and Survey Division

No abstract provided.

Geology, Groundwater Chemistry And Management Of The Dakota Aquifer In Nebraska, David C. Gosselin, F. Edwin Harvey, Charles A. Flowerday

Conservation and Survey Division

No abstract provided.

Peptide-Protein Interactions: Photoinduced Electron-Transfer Within The Preformed And Encounter Complexes Of A Designed Metallopeptide And Cytochrome C, Robin C. Lasey, Liu Liu, Ling Zang, Michael Y. Ogawa

Chemistry Faculty Publications

Photoinduced electron-transfer (ET) occurs between a negatively charged metallopeptide, [Ru(bpy)2(phen-am)-Cys-(Glu)(5)-Gly](3-) = RuCE(5)G, and ferricytochrome c = Cyt c. In the presence of Cyt c, the triplet state lifetime of the ruthenium metallopeptide is shortened, and the emission decays via biexponential kinetics, which indicates the existence of two excited-state populations of ruthenium peptides. The faster decay component displays concentration-independent kinetics demonstrating the presence of a preformed peptide-protein complex that undergoes intra-complex electron-transfer. Values of K-b = (3.5 +/- 0.2) x 10(4) M-1 and k(ET)(obs) = (2.7 +/- 0.4) x 10(6) s(-1) were observed at ambient temperatures. The magnitude of k(ET)(obs) decreases …

A Study In Java Bytecode Engineering With Pcesjava, Martin R. Linenweber

All Computer Science and Engineering Research

This thesis reports on experience with PCESjava, a collection of tools which we have developed for the purpose of aiding programmers. Particular applications optimize and instrument JAVA bytecode programs. Using these tools, we have successfully identified impediments to real-time performance in a popular JAVA collections object. Our approach here is based on automatic instruction to obtain traces that show paths whose execution time is not reasonably bounded. We also report on the application of our tool to reduce program footprint in JAVA programs by rewriting the bytecodes to occupy less space. Our transformations also improves the running time of set …

A Combinatorial Technique For Face Detection Based On Color And Statistical Analysis, Harishwaran Hariharan

Electrical & Computer Engineering Theses & Dissertations

Automatic detection of faces from video sequences is an important task in security applications. The number, location, size and orientation of human faces in a video frame are unpredictable and can vary from frame to frame. A face detection algorithm for color images in the presence of varying lighting conditions and complexity in background relying upon color and statistical analysis is presented in this thesis. The new method detects skin regions over the entire image and then classifies the skin regions as faces and non-faces. Segmentation of skin regions is performed by a novel color space merging procedure named Integrated …

Creating Enterprise Simulations Using High Level Architecture, Anton R. Lidums

Electrical & Computer Engineering Theses & Dissertations

Despite an established need, there are two remaining roadblocks to building distributed simulations and enterprise simulation systems. First, commercial simulation packages and engineering modeling tools are not readily distributable across multiple computers and have traditionally had very little impetus for utilizing a distributable format. Second, although HLA simulations have been built and there are tools to facilitate those efforts, very little has been done or written that specifically describes a "non-standard" integration implementation in sufficient detail to make the process reusable or repeatable. This thesis introduces a proof of concept prototype that was developed to integrate simulations. The paper presents …

Automatic Speaker Identification Using Reusable And Retrainable Binary-Pair Partitioned Neural Networks, Ashutosh Mishra

Electrical & Computer Engineering Theses & Dissertations

This thesis presents an extension of the work previously done on speaker identification using Binary Pair Partitioned (BPP) neural networks. In the previous work, a separate network was used for each pair of speakers in the speaker population. Although the basic BPP approach did perform well and had a simple underlying algorithm, it had the obvious disadvantage of requiring an extremely large number of networks for speaker identification with large speaker populations. It also requires training of networks proportional to the square of the number of speakers under consideration, leading to a very large number of networks to be trained …

Analysis Of Ingaassb/Aigaassb Photodetectors For Applications At The 2.0 Micron Wavelengths, Phani Pendyala

Electrical & Computer Engineering Theses & Dissertations

The study of an InGaAsSb-based heterojunction avalanche photo detector has been carried out for 2-μm applications. A separate absorption and multiplication structure was used because it minimizes the tunneling component of the dark current in the absorption region, and also provides single-carrier injection into the multiplication region. This is a well-known requirement for reducing the multiplication noise. The primary goal was to evaluate the potential of InGaAsSb-AlGaAsSb photo-detectors for photodetection at the two-micron wavelength.

InGaAsSb is a relatively new material, and, therefore, characterization and photodetector response analysis based on this material are not available in the literature. In this thesis …

Dynamics Of Phase Transitions On Low-Index Metal Surfaces, Bo Lin

Electrical & Computer Engineering Theses & Dissertations

The surface superheating and phase transitions at the low-index surface of metal were investigated using conventional continuous and 100-ps time-resolved reflection high-energy electron diffraction. Three metal surfaces, In(111), Au(110) and Pb(111), have been investigated in this work. The high temperature behavior of the In(111) surface was investigated using reflection high-energy electron diffraction with 100-ps temporal resolution. The change of surface vacancy density on In(111) is observed from 300 K to near the bulk melting point. The vacancy-formation energy of In(111) surface is estimated from experimental results. The surface vacancy density is observed to increase with temperature; however, the average random …

Multi-Symplectic Integrators For Nonlinear Wave Equations, Alvaro Lucas Islas

Mathematics & Statistics Theses & Dissertations

Symplectic (area-preserving) integrators for Hamiltonian ordinary differential equations have shown to be robust, efficient and accurate in long-term calculations. In this thesis, we show how symplectic integrators have a natural generalization to Hamiltonian PDEs by introducing the concept of multi-symplectic partial differential equations (PDEs). In particular, we show that multi-symplectic PDEs have an underlying spatio-temporal multi-symplectic structure characterized by a multi-symplectic conservation law MSCL). Then multi-symplectic integrators (MSIs) are numerical schemes that preserve exactly the MSCL. Remarkably, we demonstrate that, although not designed to do so, MSIs preserve very well other associated local conservation laws and global invariants, such as …

Study Of Deconfinement In Na50, Paula Bordalo, M. C. Abreu, B. Alessandro, C. Alexa, R. Arnaldi, M. Atayan, C. Baglin, A. Baldit, M. Bedidian, S. Boelè, V. Boldea, Samuel Borenstein, C. Borges, A. Bussière, L. Capelli, C. Castagner, J. Castor, B. Chaurand, E. Chiavassa, C. Cicalò, T. Claudino, M. P. Comets, N. Constans, S. Constantinescu, P. Cortese, J. Cruz, A. De Falco, G. Dellacasa, N. De Marco, A. Devaux, S. Dita, O. Drapier, B. Espagnon, J. Fargeix, P. Force, M. Gallio, Y. K. Gavrilov, C. Gerschel, P. Giubellino, M. B. Golubeva, M. Gonin, A. A. Grigorian, J. Y. Grossiord, F. F. Guber, A. Guichard, H. Gulkanyan, R. Hakobyan, R. Haroutunian, M. Idzik, D. Jouan, T. L. Karavitcheva, L. Kluberg, A. B. Kurepin, Y Le Bornec, C. Lourenço, P. Macciotta, M. Mac Cormick, A. Marzari-Chiesa, M. Masera, A. Masoni, M. Monteno, M. Musso, P. Petiau, A. Piccotti, J. R. Pizzi, W. Prado Da Silva, F. Prino, G. Puddu, C. Quintans, L. Ramello, Laboratory Of Instrumentation And Experimental Particle Physics, L. Riccati, A. Romana, P. Saturnini, H. Santos, E. Scalas, E. Scomparin, S. Serci, R. Shahoyan, F. Sigaudo, S. Silva, M. Sitta, P. Sonderegger, X. Tarrago, N. S. Topilskaya, G. L. Usai, E. Vercellin, L. Villatte, N. Willis

Publications and Research

The J/Ψ production in 158 A Ge V Pb-Pb interactions is studied, in the dimuon decay channel, as a function of centrality, as measured with the electromagnetic or, alternatively, with the very forward hadronic calorimeters. After a first sharp variation at mid-centrality, both patterns continue to fall down and exhibit a curvature change at high centrality values. This trend excludes any conventional hadronic model and finds a natural explanation in a deconfined quark-gluon phase scenario.

Trail Conditions And Preferences From A Mountain Bike Users Perspective In Cottonwood Valley, Jeff Frampton

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to gather baseline data and user preferences from a mountain bike user’s perspective about the current condition of the multiple use trails in Cottonwood Valley. Cottonwood Valley is an area located at the southern tip of the Red Rock Canyon National Conservation Area. Multiple use includes hiking, biking and horseback riding and does not include motorized vehicles. The area was set aside for conservation by an act of Congress because of the inherent value that it represents.

Because the public is allowed to access and use the trails in the area, there has been …