Physical Sciences and Mathematics Commons^™

Needs Assessment: A Report On Seven Focus Groups In Ohio: Report Summary, Kevin O'Brien, Daniel Baracskay, Wendy A. Kellogg, Michael Mcgoun, Claudette Robey, Michael J. Tevesz, Kirstin S. Toth

All Maxine Goodman Levin School of Urban Affairs Publications

Coastal decision-makers and training providers in the Ohio Lake Erie basin participated in seven focus groups to generate information on coastal resources knowledge and training needs. Six of the focus groups were comprised of a cross-section of professionals who make decisions affecting watershed areas or Lake Erie coastal areas (non-providers); the seventh was comprised of training providers (providers). Discussions centered on two main areas: core knowledge needs and training needs.

A Parallel Two Dimensional Delaunay Decoupling Method, Leonidas Linardakis

Dissertations, Theses, and Masters Projects

No abstract provided.

Pre-Drift Extension Of The Atlantic Margins Of North America And Europe Based On Paths Of Permo-Triassic Apparent Polar Wander, Myrl E. Beck Jr., Bernard A. Housen

Geology Faculty Publications

We reconstruct the relative configuration of North America and Europe prior to separation using paths of apparent polar wander (APW) for the interval 300 to 200 Ma. The Bullard et al. (1965) reconstruction closely superimposes the 300 Ma points on the two APW paths but leaves the 200 Ma points far apart. Conversely, anomaly-based reconstructions for later times approximately superimpose the 200 Ma ends of the paths but leave the older ends far apart. This indicates that separation of the interiors of the two continents began during the interval 300 to 200 Ma, long before surficial rifting commenced in the …

Factors Affecting Participation In City Recycling Programs, Stacy Marie Lockhart

LSU Master's Theses

Recycling consists of diverting or recovering materials from the solid waste stream that would otherwise end up returning to the environment as a potential source of pollution. These collected materials are then used as raw materials in the manufacture or assembly of a new product or package. Over the years the amount of municipal solid waste being generated per person has steadily increased. Waste disposal costs are also increasing, making recycling even more important. To address this issue cities are developing recycling policies or plans. The type of plan varies according to the area; as of this time there are …

Environmental Management Of Waste Electrical & Electronic Equipment (Weee) In Ireland, Simon Wilkinson

Theses

This thesis follows two previous studies by the Author on the calculation of theoretical WEEE arisings, and an assessment of ecodesign practices in Ireland. It has established collection trials in five different locations throughout Ireland in order to characterise and quantify WEEE arisings, and to examine outlets for collected WEEE. Overall, during the twelve months of collection at the project locations, more than 450 tonnes of WEEE was collected from the public and recycled. Within the catchments of each facility, collection rates of between 2.1 and 3.5 kg/person/year were achieved during the twelve-month trial period. With further public awareness raising …

Late Miocene-Pliocene Detachment Faulting And Pliocene-Pleistocene Basin-And-Range Extension Inferred From Dismemberedrift Basins Of The Salt Lake Formation, Susanne U. Janecke, S. M. Carney, M. E. Perkins, J. C. Evans, P. K. Link, R. Q. Oaks Jr., B. P. Nash

Susanne U. Janecke

No abstract provided.

Metrics For Evaluating Human-Robot Interactions, Michael A. Goodrich, Dan R. Olsen Jr.

Faculty Publications

Metrics for evaluating the quality of a human-robot interface are introduced. The autonomy of a robot is measured by its neglect time. The robot attention demand metric measures how much of the user’s attention is involved with instructing a robot. The free-time and fan-out metrics are two ways to measure this demand. Each of them leads to estimates of the interaction effort. Reducing interaction effort without diminishing task effectiveness is the goal of human-robot interaction design.

Steady‐State Absorption Rate Models For Use In Relaxation Rate Studies With Continuous Laserexcited Photothermal Lens Spectrometry, Stephen E. Bialkowski

Stephen E. Bialkowski

This paper examines the solutions of kinetic rate equations for prediction of the photothermal lens signals under irradiance conditions that can lead to optical saturation or bleaching. The relaxation kinetics resulting from forcing excited state populations in multiple levels by high excitation irradiance continuous lasers is examined and irradiance-dependent photothermal lens signals are predicted. The analyses described in this paper are based on simple kinetic models for optical excitation and subsequent excited state relaxation. Dark-state relaxation is assumed to be extremely fast compared to limiting kinetics resulting in simplified excited state models. Kinetic models are derived for two, four and …

Climatology And Latitudinal Gradients Of Quiet-Timethermospheric Neutral Winds Over Millstone Hill From Fabry-Perot Interferometermeasurements, J. T. Emmert, Bela G. Fejer, D. P. Sipler

Bela G. Fejer

[1] Midlatitude nighttime thermospheric neutral winds are strongly dependent on season, solar activity, and latitude. We use an extensive database of wind measurements made during 1989–2001 by the Millstone Hill Fabry-Perot interferometer to study the detailed climatology of quiet time neutral winds near an altitude of 250 km. To facilitate the analysis of these data, we develop a local time, day-of-year, solar flux, and latitude-dependent empirical model, with the latitude dependence obtained by considering north looking and south looking observations separately. Our results show that the zonal winds are predominantly eastward after dusk and westward before dawn, with the strongest …

Assessing The Impacts Of Global Climate Changeon Forest Pests, J. A. Logan, J. Reniere, James A. Powell

James A. Powell

No abstract provided.

A Memory-Based Approach To Cantonese Tone Recognition, Deryle W. Lonsdale, Michael Emonts

Faculty Publications

This paper introduces memory-based learning as a viable approach for Cantonese tone recognition. The memorybased learning algorithm employed here outperforms other documented current approaches for this problem, which is based on neural networks. Various numbers of tones and features are modeled to find the best method for feature selection and extraction. To further optimize this approach, experiments are performed to isolate the best feature weighting method, the best class voting weights method, and the best number of k-values to implement. Results and possible future work are discussed.

Genomic Instability Induced By Two Chemical Carcinogens, Cadmium And Nickel And By Particulate Titanium Debris From An Implant, Natasha Coen

Doctoral

It has been established that cells surviving radiation may produce descendants many cell divisions post-exposure in which, there are high incidences of chromosomal aberrations arising de novo, gene mutation and lethal mutations/delayed cell death. These effects are collectively known as genomic instability and are induced at frequencies greater than that of spontaneous mutations. Formally this syndrome ‘genomic instability’ has only been definitively proven to occur following irradiation. This leads us to the consideration that heavy metals could also induce the genomic instability phenotype, and if so, it could have implications for those exposed through their occupation, through smoking or for …

Impact Of Reject Brine Chemical Composition From Inland Desalination Plants On Soil, Juma Bin Khalfan Bin Khamis Al-Handhaly

Theses

The impact of reject brine chemical composition and disposal from inland desalination plants on soil in the eastern region of Abu Dhabi Emirate, namely Al Wagan, Al Quaa and Urn Al Zumool, was evaluated. Twenty five (25) inland Brackish Water Reverse Osmoses (BWRO) desalination plants (11 at Al Wagan, 12 at Al Quaa, and 2 at Urn Al Zumool) were investigated. The average capacity of these plants varied between 26,400 G/d (99.93 m³/d) and 61,000 G/d (230.91 m³/d). The recovery rate varied from 60 and 70% and the reject brine accounts for about 30 - 40 …

Use Of Date Pits As An Energy Source For Nile Tilapia, Oreochromis Niloticus, Maitha Mohammed Sultan Al-Darmaki

Theses

The present study was conducted to evaluate date pits as an energy source of Nile tilapia fingerlings and adults, in two consecutive experiments. In the first experiment, five isocaloric (450 kcal/100g)-isonitrogenous (35% crude protein) diets containing of date pits as a replacement for wheat bran (energy source) 0, 25, 50, 75 and 100% levels were prepared. The diets were fed to duplicate groups of Nile tilapia, Oreochromis niloticus fingerlings and adults, with average initial weights of 10 and 50g, respectively twice a day, for 70 days. The culture system consisted of 70-L, fiberglass tanks connected together in a closed system. …

Natural Radioactivity Of Uae Coastal Areas, Yaqoub Abdalla Mohamed Al-Ali

Theses

Many materials that are usually found in the earth's crust contain small but measurable amount of naturally occurring radioactivity.

In the present study, the natural radioactivity due to the presence of ²³⁸U, ²³²Th and ⁴⁰K in beach sand along the UAE costal line has been measured. The measurements were performed using gamma-ray spectrometry with a high-purity Germanium (HPGe) detector connected to a multi-channel analyzer.

Chapter 1 includes an introduction about natural radioactivity, gamma ray spectrometry, types of detectors employed and analysis of gamma ray spectra. A literature review of the related work is also included at the …

United States Diplomacy In The Age Of The Internet, Allison S. Greene

Graduate Program in International Studies Theses & Dissertations

The dynamics of international relations are constantly changing, and the origin of an extraordinary amount of that change can be traced to what has been coined the ‘Information Revolution.’ It is a revolution as profound and as significant as Gutenberg's invention of moveable metal type, and may result in social and political consequences of comparable magnitude. One of the most significant and far-reaching implications of this phenomenon is the emergence of the Internet. Since its inception, there have been many claims and assertions about existing and potential repercussions of the Internet within the diplomatic realm.

The purpose of this work …

Book Review: Tourism In China: Exotic Land Revealed, Joan S. Remington

Hospitality Review

There is no better way to lean about tourism in China than from renowned expert in the field. Alan Lew. PhD. and professor at Northern Arizona University, Lawrence Yu, Ph.D. and associate professor in the Department of Tourism and Hospitality Management at George Washington University. John Ap, Ph.D. and associate professor in tourism management at Hong Kong Polytechnic University and Zhang Guangrui, director of the Tourism Research Centre, Chinese Academy of Social Sciences in Beijing, China, have contributed to and edited a collection of writings detailing the development of tourism in this fascinating and exotic land.

H-Substituted Anionic Carbon Clusters Cnh- (N <= 10): Density Functional Studies And Experimental Observations, L. Pan, B. K. Rao, A. K. Gupta, G. P. Das, P. Ayyub

Physics Publications

We have studied the interaction of hydrogen with small neutral and anionic carbon clusters using density functional calculations. The geometry, stability, and electronic structure of these clusters show an odd–even alternation originating in the bonding nature of the carbon atoms. Our mass spectrometric measurements of the abundance of CnH− (n⩽10) cluster anions produced by gas-feed Cs sputtering from different crystallographic forms of carbon display similar odd–even alternation with the even-n clusters being relatively more abundant. The calculated trend in the adiabatic electron affinities shows a behavior similar to the experimental abundance pattern. We discuss a possible partial suppression of …

Nitrogen-Induced Magnetic Transition In Small Chromium Clusters, Q. Wang, Q. Sun, B. K. Rao, P. Jena, Y. Kawazoe

Physics Publications

Using density functional theory with generalized gradient approximation for exchange and correlation, we show that otherwise antiferromagnetically coupled chromium atoms in very small chromium clusters couple ferromagnetically when doped with a nitrogen atom, thus leading to giant magnetic moments. For example, the magnetic moment of Cr2N is found to be 9μBwhile that of Cr2 is 0μB. Strong bonding between Cr and N atoms brings about this magnetic transition. The Cr atoms nearest neighbor to N couple ferromagnetically with each other and antiferromagnetically with nitrogen. The significance of these results in understanding the ferromagnetic order in Cr-doped GaN is discussed.

Atomic Structure, Binding Energy, And Magnetic Properties Of Iron Atoms Supported On A Polyaromatic Hydrocarbon, L. Senapati, S. K. Nayak, B. K. Rao, P. Jena

Physics Publications

The atomic structure, energetics, and properties of gas-phase cluster complexes containing coronene (C24H12) molecule and up to two iron atoms are studied for the first time using density functional theory and generalized gradient approximation for exchange and correlation. The geometries of the neutral and cationic iron–coronene complexes are optimized without symmetry constraint and by examining the possibility that iron atoms could occupy various sites via individual π or bridging interactions. In both neutral and cationic complexes a single Fe atom is found to preferentially occupy the on-top site above the outer ring, while two Fe atoms dimerize and reside on …

Fy2003 Annual Report Of The Water Quality Monitoring Project For The Water Quality Protection Program Of The South Florida Keys National Marine Sanctuary, Joseph N. Boyer, Ronald Jones

SERC Research Reports

No abstract provided.

South Florida Coastal Water Quality Monitoring Network Fy2003 Cumulative Report To The South Florida Water Management District (Contract No. C-15397), Joseph N. Boyer

SERC Research Reports

No abstract provided.

Determining Crystal Thickness By Measuring Optical Rotation In Chiral Crystals, Cori Bruce, James Bish, Jamie Walker

The Corinthian

In this experiment, it will be shown that the linear relationship between pathlength and observed rotation can be applied to predict the pathlength based on the observed rotation. It should be noted, however, that the method devised will only work for chiral crystals. When aqueous NaC103 solution evaporates two rotamers will form that will rotate plane-polarized light in equal but opposite directions. Hence, the crystals must be separated to obtain linear correlations in regards to the two rotamers.

Argon Eximer Emission From High-Pressure Microdischarges In Mental Capillaries, R. Mohan Sankaran, Konstantinos P. Giapis, Mohamed Moselhy, Karl H. Schoenbach

Bioelectrics Publications

We report on argon excimer emission from high-pressure microdischarges formed inside metal capillaries with or without gas flow. Excimer emission intensity from a single tube increases linearly with gas pressure between 400 and 1000 Torr. Higher discharge current also results in initial intensity gains until gas heating causes saturation or intensity drop. Argon flow through the discharge intensifies emission perhaps by gas cooling. Emission intensity was found to be additive in prealigned dual microdischarges, suggesting that an array of microdischarges could produce a high-intensity excimer source.

Iowa Academy Of Science Membership Directory, 2003-2004, Iowa Academy Of Science

Iowa Academy of Science Documents

Table of Contents:

Editorial Board, Journal ... 4
Committees ... 6
Sections ... 14
ISTS Regional Directors ... 19
Awards of Merit ... 21
Excellence in Science Teaching Awards ... 22
Past Presidents ... 23
Membership Roster ... 24
Institutional Members ... 25
Corporate Sponsors ... 25

Aerial Surveys Of Cliff-Nesting Raptors, Robert J. Ritche, Ann M. Wildman, David A. Yokel

United States Bureau of Land Management: Staff Publications

In summer 1999, an extensive aerial survey of cliff-nesting raptors was conducted in the National Petroleum Reserve–Alaska (NPR–A) on Alaska’s North Slope. No similarly extensive survey had been conducted since 1977. In the interim, the regional population of the Arctic peregrine falcon (Falco peregrinus tundrius) had increased, as shown by monitoring along the Colville River. The 1999 survey assessed the present abundance and distribution of the peregrine falcon, as well as the gyrfalcon (Falco rusticolus), golden eagle (Aquila chrysaetos), and rough-legged hawk (Buteo lagopus) in most of the NPR–A. Specifically excluded from …

Low-Flow Helmholtz Resonator For Molar Mass Detection, Brackman Amy, Amanda Kea, Kenneth Mcgill

The Corinthian

A simple apparatus was constructed for an undergraduate physical chemistry laboratory to determine a mathematical model of wavelike motion. The apparatus was assembled by attaching an airflow valve connected to a tank of argon gas to a GC column, thus creating regulated airflow. The air was manipulated to gently flow over a small sensitive microphone that was attached to an inexpensive resonator. A model will be developed to measure the speed of sound that will lead to the measurement of the molar mass.

Structural And Biochemical Analyses Of Dna And Rna Binding By A Bifunctional Homing Endonuclease And Group I Intron Splicing Factor, Jill M. Bolduc, P. Clint Spiegel, Pivali Chatterjee, Kristina L. Brady, Maureen E. Downing, Mark G. Caprara, Richard B. Waring, Barry L. Stoddard

Chemistry Faculty and Staff Publications

We determined the crystal structure of a bifunctional group I intron splicing factor and homing endonuclease, termed the I-AniI maturase, in complex with its DNA target at 2.6 Å resolution. The structure demonstrates the remarkable structural conservation of the (3-sheet DNA-binding motif between highly divergent enzyme subfamilies. DNA recognition by I-AniI was further studied using nucleoside deletion and DMS modification interference analyses. Correlation of these results with the crystal structure provides information on the relative importance of individual nucleotide contacts for DNA recognition. Alignment and modeling of two homologous maturases reveals conserved basic surface residues, distant …

Estimation Of Cumulative Incidence Functions In Competing Risks Studies Under An Order Restriction, Hammou El Barmi, Subhash C. Kochar, Hari Mukerjee, Francisco J. Samaniego

Mathematics and Statistics Faculty Publications and Presentations

In the competing risks problem an important role is played by the cumulative incidence function (CIF), whose value at time t is the probability of failure by time t for a particular type of failure in the presence of other risks. Its estimation and asymptotic distribution theory have been studied by many. In some cases there are reasons to believe that the CIFs due to two types of failure are order restricted. Several procedures have appeared in the literature for testing for such orders. In this paper we initiate the study of estimation of two CIFs subject to a type …

Mcnair Research Journal

Georgia Southern University McNair Scholars Journal

Full issue of the Georgia Southern University McNair Journal presented by the Ronald E. McNair Post-Baccalaureate Achievement Program at Georgia Southern University.

• Understanding Charter Schools: An Alternative Education Program for Students Quail T. Arnold; Dorothy A. Battle, PhD.
• The Reality of Aversive Racism Christina Clarke; Jerome Steffen PhD.
• Where Did the Water Go? An Experimental Look into the Light Path of a Mirage Lisa DeBeer; Mark Edwards, PhD.

• Minorities As The Majority: The Overrepresentation of African American Students in Special Education Penny Teachy-Gary; Rosemari Stallworth-Clark PhD.

• Wireless Sensor Tracking Network-TinyOS

• Perceptions of Rape

• Low Income Rural Women and Non-Compliance to …

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