Physical Sciences and Mathematics Commons^™

Measuring Inter-Dna Potentials In Solution, Xiangyun Qiu, Lisa W. Kwok, Hye Yoon Park, Jessica S. Lamb, Kurt Andresen, Lois Pollack

Physics and Astronomy Faculty Publications

Interactions between short strands of DNA can be tuned from repulsive to attractive by varying solution conditions and have been quantified using small angle x-ray scattering techniques. The effective DNA interaction charge was extracted by fitting the scattering profiles with the generalized one-component method and inter-DNA Yukawa pair potentials. A significant charge is measured at low to moderate monovalent counterion concentrations, resulting in strong inter-DNA repulsion. The charge and repulsion diminish rapidly upon the addition of divalent counterions. An intriguing short range attraction is observed at surprisingly low divalent cation concentrations, ~16 mM Mg2+. Quantitative measurements of inter- DNA potentials …

Large Scale Growth And Magnetic Properties Of Fe And Fe₃O₄ Nanowires, Jinbo Yang, H. Xu, Shaoxin You, X.-D. Zhou, C. S. Wang, William B. Yelon, William Joseph James

Materials Science and Engineering Faculty Research & Creative Works

Fe and Fe3O4 nanowires have been synthesized by thermal decomposition of Fe(CO)5, followed by heat treatments. The Fe wires are formed through the aggregation of nanoparticles generated by decomposition of Fe(CO)5. A core-shell structure with an iron oxide shell and Fe core is observed for the as-prepared Fe wires. Annealing in air leads to the formation of Fe2O3/Fe3O4 wires, which after heat treatment in a N2/alcohol atmosphere form Fe3O4 wires with a sharp Verwey [Nature (London) 144, 327 (1939)] transition at 125 K. The Fe3O4 wires have coercivities of 261 and 735 Oe along the wire axis at RT and …

It Service Management For The Nlp An Executive Overview, Darius D. Taylor

Regis University Student Publications (comprehensive collection)

Implementation of IT Service Management (ITSM) processes as prescribed by the Information Technology Infrastructure Library (ITIL) or in Microsoft Operation of Framework (MOF) can be a difficult undertaking. The Regis University Networking Lab Practicum (NLP) has opted to align its current IT Management methodology with the current best practices employed by other organizations. An initial analysis in the form of an executive overview was conducted in order to substantiate the benefits of IT Service Management and to determine the implementation feasibility in an organization comprised mainly of transient IT personnel. The impetus for the transition away from business as usual …

Hydrological Effects And Groundwater Fluctuations In Interdunal Environments In The Nebraska Sandhills, David Gosselin, Venkataramana Sridhar, F. Edwin Harvey, James Goeke

Great Plains Research: A Journal of Natural and Social Sciences

Nine years of groundwater monitoring data has documented the important influence that topographic relief and location in the groundwater flow system have on the hydrologic function of interdunal valleys. The western "wet" valley at the Gudmundsen Sandhills Laboratory in central Nebraska, which is a net discharge area, is more strongly buffered from the effects of annual-scale climatic variability than the eastern "dry" valley. The east valley is generally an area of net recharge and as such is more responsive to climatic variability. This study employed a simple water balance approach to estimate evapotranspiration (ET) from water level measurements in the …

Forecasting Police Calls During Peak Times For The City Of Cleveland, John P. Holcomb, Norean Radke Sharpe

Mathematics and Statistics Faculty Publications

For a period of time, professors from the Cleveland State University worked closely with the City of Cleveland Police Department. This partnership resulted in access to police records cataloging all emergency 911 calls for the city since 1995. Here, we describe forecasting approaches that can be used by the Police Department based on hourly 911 calls in the years 2001 to 2003 throughout the city during peak call time: the third shift during summer months. This case study is appropriate for class discussions in advanced courses in statistics to explore the application of time series analysis techniques.

Interactive Fault Localization Techniques In A Spreadsheet Environment, Joseph R. Ruthruff, Margaret Burnett, Gregg Rothermel

School of Computing: Faculty Publications

End-user programmers develop more software than any other group of programmers, using software authoring devices such as multimedia simulation builders, e-mail filtering editors, by-demonstration macro builders, and spreadsheet environments. Despite this, there has been only a little research on finding ways to help these programmers with the dependability of the software they create. We have been working to address this problem in several ways, one of which includes supporting end-user debugging activities through interactive fault localization techniques. This paper investigates fault localization techniques in the spreadsheet domain, the most common type of end-user programming environment. We investigate a technique previously …

The Influence Of High Temperature And Two Hurricanes On The Success Of Late Season Loggerhead Nests In Broward County, Florida, In 2005, Stefanie Ouellette, Curtis M. Burney

Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures

The success of loggerhead nests, defined as the percentage of the eggs per nest resulting in live released hatchlings, declined to unusually low levels during the latter part of the 2005 season. The mean successes were 81.1, 61.1, 32.8 and 13.4 percent for nests deposited in May, June, July and August, respectively. Many eggs from the August nests appeared to be unusually dried. There was a significant inverse relationship (P < .0001) between the daily air temperature anomaly on the day of nest deposition and the average daily success rate of loggerhead nests in 2005. The daily temperature anomaly is the deviation of the average air temperature each day from the daily climatological average values. There was also a highly significant inverse relationship between maximum daily air temperature and nest success rate in 2005. These relationships were not found in the previous two years. The actual average temperature during August in 2005 was 29.7°C, compared to 28.9 and 29.2°C in 2004 and 2003, respectively. The 2005 average was statistically different from the other two years (one way ANOVA, P < .001) and also from the climatological average temperature of 28.6°C. Mean daily success rates were less than 50 percent for nests deposited during the 50 days preceding the impact of Hurricane Katrina on August 25. Nests deposited in the first two weeks of August were also impacted by Hurricane Rita. Mean daily success rates were less than 10 percent on 7 days during this period.

Scientific Research In A Foreign Language, Meghan Bellows

Senior Honors Projects

Research is a vital aspect in science and engineering. Not only does it further ideas and technology around the world, it brings people around the world together through collaborations. More often than not, the common language spoken among collaborators is English. This makes it easy for native English speakers. It becomes very difficult, however, when the common language spoken among collaborators is not one’s native tongue. New vocabulary, oftentimes very complex and technical, must be learned. It becomes even more of a challenge to present results and findings in a manner that is clear and concise. A collaboration between the …

Bioremediation Of An Organically Contaminated Bedrock Aquifer, Maureen A. Lewis

Inquiry Journal 2006

No abstract provided.

Thermal Stability And Degradation Kinetics Of Poly(Methyl Methacrylate)/Layered Copper Hydroxy Methacrylate Composites, Everson Kandare, Hongmei Deng, Dongyan Wang, Jeanne Hossenlopp

Chemistry Faculty Research and Publications

Poly(methyl methacrylate) (PMMA)/copper hydroxy methacrylate (CHM) composites were prepared via solution blending and bulk polymerization. Addition of 3% by weight of the CHM additive using solution blending resulted in a significant increment (~45°C) in thermogravimetric analysis (TGA) T₅₀, the temperature at which 50% of the original polymeric mass is lost. The value T₅₀ increased by 30°C for a PMMA composite with 4% CHM, synthesized via bulk polymerization. Activation energies, E_a, were calculated as a function of conversion fractions (TGA decomposition profile) for the polymeric materials. Analysis of multiple heating rate data using the Flynn–Wall– Ozawa …

Fire Management Guidelines For Southern Shrubland And Pilbara Pastoral Rangelands : Best Management Practice Guidelines, Department Of Agriculture And Food, Western Australia

Land resources best practice series

Fire is integral to many ecosystems in Western Australian rangelands. Controlled fire can reduce the risk of wild fire, benefit pasture productivity and contribute positively to biodiversity values. Uncontrolled fire is a threat to safety and the business viability of pastoral enterprises and threatens rangeland biodiversity and productivity.This document deals with property-scale management of pastoral leases. Many fire regime issues are more regional in character. These include community safety and health, the impact on regional economies, the societal and cultural values of landscape and the effects on tourism. Ecologically the high productivity, diversity and palatability of recently burnt vegetation is …

Fire Management Guidelines For Kimberley Pastoral Rangelands : Best Management Practice Guidelines, Department Of Agriculture And Food, Western Australia

Land resources best practice series

Kimberley pastoralists operate in a highly fire-prone environment. Uncontrolled fires pose significant economic, safety, and environmental risks to pastoral enterprises. In contrast, the controlled use of fire can benefit land management, animal production and biodiversity conservation. For any given country type, the interactions of fire, grazing and weather have complex effects on both land condition and animal production. Although general guidelines on the use of fire are valuable, based as they are on a combination of experience and available research findings, they should best be regarded as providing a starting point. At the property level, an adaptive approach that incorporates …

Magnetic Coupling Between A “Hot Jupiter” Extrasolar Planet And Its Pre-Main-Sequence Central Star, Brooke E. Alarcon

Master's Theses - Daytona Beach

In order to understand the short-period pile-up of extrasolar planets, the magnetic torque of a pre-main-sequence central star on a single orbiting "hot Jupiter" planet is calculated. The star's magnetic field is modeled as a dipole magnetic field. The time-dependent stellar radius is calculated for four different stellar mass sizes; 2Msum \.5Msum \Msum and 0.5Msurt. The minimum planetary ionization for the giant gas planet to be nearly frozen to the magnetic field lines is calculated. The changing angular momentum of an orbiting body was balanced with the magnetic torque of the central star to provide …

Energy Efficient Process Heating: Managing Air Flow, Kevin Carpenter, J. Kelly Kissock

Mechanical and Aerospace Engineering Faculty Publications

Much energy is lost through excess air flow in and out of process heating equipment. Energy saving opportunities from managing air flow include minimizing combustion air, preheating combustion air, minimizing ventilation air, and reconfiguring openings to reduce leakage.

This paper identifies these opportunities and presents methods to quantify potential energy savings from implementing these energy-savings measures. Case study examples are used to demonstrate the methods and the potential energy savings.The method for calculating savings from minimizing combustion air accounts for improvement in efficiency from increased combustion temperature and decreased combustion gas mass flow rate.

The method for calculating savings from …

Measuring Plant-Wide Energy Savings, J. Kelly Kissock, Carl Eger

Mechanical and Aerospace Engineering Faculty Publications

This paper presents a general method for measuring plant-wide industrial energy savings and demonstrates the method using a case study from an actual industrial energy assessment. The method uses regression models to characterize baseline energy use. It takes into account changes in weather and production, and can use sub-metered data or whole plant utility billing data. In addition to calculating overall savings, the method is also able to disaggregate savings into components, which provides additional insight into the effectiveness of the individual savings measures.

Although the method incorporates search techniques and multi-variable least-squares regression, it is easily implemented using data …

Energy Efficient Process Heating: Insulation And Thermal Mass, Kevin Carpenter, J. Kelly Kissock

Mechanical and Aerospace Engineering Faculty Publications

Open tanks and exterior surfaces of process heating equipment lose heat to the surroundings via convection, radiation, and/or evaporation. A practical way of reducing heat loss is by insulating or covering the surfaces. This paper presents methods to quantify heat loss and energy savings from insulating hot surfaces and open tanks. The methods include radiation and evaporation losses, which are ignored by simplified methods. In addition, thermal mass, such as refractory, conveyor and racking equipment, acts as a heat sink and increases heating energy use in process heating applications. This paper presents lumped capacitance and finite-difference methods for estimating heat …

Statistical Uncertainty Of Eddy Flux–Based Estimates Of Gross Ecosystem Carbon Exchange At Howland Forest, Maine, Stephen Hagen, Rob Braswell, Ernst Linder, Steve Frolking, Andrew D. Richardson, David Y. Hollinger

Earth Sciences

We present an uncertainty analysis of gross ecosystem carbon exchange (GEE) estimates derived from 7 years of continuous eddy covariance measurements of forest-atmosphere CO₂fluxes at Howland Forest, Maine, USA. These data, which have high temporal resolution, can be used to validate process modeling analyses, remote sensing assessments, and field surveys. However, separation of tower-based net ecosystem exchange (NEE) into its components (respiration losses and photosynthetic uptake) requires at least one application of a model, which is usually a regression model fitted to nighttime data and extrapolated for all daytime intervals. In addition, the existence of a significant amount …

Effectiveness Of Cane Toad Eradication Methods: Arakwal National Park, Matthew Miller

Independent Study Project (ISP) Collection

The cane toad (Bufo marinus) is a pest throughout Australia. Not only is it poisonous to native predators, it also consumes or out competes native fauna. It has only recently entered into Northern New South Wales where the site for this study is located, at Arakwal National Park. This study aims to discover the most effective method of cane toad eradication in the National Park.

Over the course of 18 days, three traps were set and rotated between 9 different sites. Traps were set at sunset and cleared at sunrise. The three traps used were; (1) Pitfall style trap by …

Sea Urchin Predation In Misali Island Marine Park, Nicole Esclamado

Independent Study Project (ISP) Collection

The populations of sea urchins and their main predators, triggerfish (Balistidae), wrasses (Labridae) and emperors (Lethrinidae), were studied in the extractive and non-extractive zones of the Misali Island Marine Conservation Area in order to (1) evaluate the applicability of a sea urchin-sea urchin predator model developed in Kenya’s fringing reefs, (2) gain baseline data on Misali’s coral reef, and (3) evaluate the recovery status of the protected zone. This study revealed the predictive power of the sea urchin-sea urchin predator model for the reef ecosystem of Misali Island. As expected, a decline in sea urchin predators as a gross trophic …

Investigation Of Carbon Nanotube Growth Using A Nozzle Cvd Method, James Mcfarland

Pomona Senior Theses

This work uses a modification of the chemical vapor deposition (CVD) technique to study the effects of source gas flow geometry (and the corresponding parameters) on carbon nanotube growth. Our approach is to flow the carbon-containing source gas through a nozzle, projecting the gas stream onto targeted regions of the substrate. This technique not only allows the potential for localized nanotube growth, but also offers an interesting opportunity to provide an experimental test of theoretical nanotube growth models.

Unlv Magazine, Carol C. Harter, Joe Cockrell, Tony Allen, Regina Bacolas, Lori Bachand, Jennifer Lawson, Bret C. Birdsong, Steve Parker, Erin O'Donnell, Jennifer Robison

UNLV Magazine

No abstract provided.

Colorado College State Of The Rockies Report Card, Walter E. Hecox, Bryan Hurlbutt, Caitlin O'Brady

Publications (SD)

Welcome to Colorado College’s third State of the Rockies Report Card. Building upon a strong start in 2004 and continuing through 2005, the Rockies Project this year provides a fresh look at key challenges to this beautiful but fragile region. This Report Card and the companion April 2006 State of the Rockies Conference are significant outreach activities of Colorado College: Vision 2010, an agenda to strengthen our college and our engagement in the region.

An Unusual Mesospheric Bore Event Observed At High Latitudes Over Antarctica, K. Nielsen, Michael J. Taylor, R G. Stockwell, M. J. Jarvis

All Physics Faculty Publications

All-sky CCD observations of short-period mesospheric gravity waves have been made from Halley Station, Antarctica (76S, 27W). On 27 May, 2001, an unusual wave event exhibiting several features characteristic of a ‘‘bore’’ was observed in the OH, Na, and O2 nightglow emissions. Mesospheric bores are rare wave events that have previously been observed at mid- and low-latitudes. This event was particular interesting as: (1) it initially appeared as a single, high contrast, linear front, accompanied by a sharp enhancement in intensity in all three emissions, (2) a number of trailing wave crests were observed to form with a measured growth …

A Novel Joint Space-Wavenumber Analysis Of An Unusual Antarctic Gravity Wave Event, R. G. Stockwell, Michael J. Taylor, K. Nielsen, M. J. Jarvis

All Physics Faculty Publications

As part of a collaborative research program between British Antarctic Survey, U.K. and Utah State University, USA, all sky airglow images were recorded at Halley Station Antarctica (75.5 S, 26.7 W). An unusual mesospheric gravity wave event was observed in the OH nightglow (nominal height 87 km) over a period of 3 hours on the 27–28 May, 2001. The characteristics of the bore wave event were determined by application of the one dimensional spatial S-Transform analysis. This is the first time such analysis has been performed on airglow data. By employing these local spatial spectral analysis, the evolution of the …

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 22, Number 6, April 2006, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A six page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Iowa Academy Of Science: The New Bulletin, V02n2, Spring 2006, Iowa Academy Of Science

New Bulletin

Inside This Issue:

--Message from the Executive Director

--Iowa’s Young Scientists Shine at American Junior Academy of Science Conference

--Iowa Academy of Science Election 2006

--Saylorville Visitor Center

--IAS Donors

--Iowa Science Teachers Section Fall Conference

Post-Outburst Infrared Spectra Of V1647 Ori, The Illuminating Star Of Mcneil's Nebula, E L. Gibb, T W. Rettig, Sean D. Brittain, D Wasikowski, Theodore Simon, William D. Vacca, Michael C. Cushing, C Kulesa

Publications

V1647 Ori is a low mass star in the L1630 star-forming region that underwent an outburst in late 2003/early 2004. We present post-outburst infrared spectra obtained with NIRSPEC (Keck II) and SpeX (IRTF) and compare these to spectra taken during the outburst. The results show that the temperature of the hot CO formed in the inner part of the disk has declined by ~800 K, while the water and CO ice and low-J CO gas features remained unchanged, consistent with previous assertions that the latter, low-temperature features arise in the foreground cloud. The P-Cygni profiles of the Paschen series that …

The John Muir Newsletter, Spring/Summer 2006, The John Muir Center For Environmental Studies

Muir Center Newsletters (1981-2015)

John Muir's World Tour (part III) Introduction by W. R. Swagerty Director, John Muir Center In this issue, we resume John Muir's unpublished notebooks from his World Tour, 1903-1904. This double issue covers the dates August 18 through November 2, 1903, all recorded in notebook number fifty of the John Muir Papers at University of the Pacific. The transcription by Pulizer-prize winner and Muir-biographer Linnie Marsh Wolfe (1881-1945) is part of her papers, also at Pacific in Holt-Atherton Special Collections, a subset of.. ' the Muir Papers. The Wolfe Papers are described thus in the on-line catalog to Holt-Atherton Department …

An Interactive Relaxation Approach For Anomaly Detection And Preventive Measures In Computer Networks, Garrick A. Bell

Theses and Dissertations

It is proposed to develop a framework of detecting and analyzing small and widespread changes in specific dynamic characteristics of several nodes. The characteristics are locally measured at each node in a large network of computers and analyzed using a computational paradigm known as the Relaxation technique. The goal is to be able to detect the onset of a worm or virus as it originates, spreads-out, attacks and disables the entire network. Currently, selective disabling of one or more features across an entire subnet, e.g. firewalls, provides limited security and keeps us from designing high performance net-centric systems. The most …

Correlating Late Pleistocene Deposits On The Coastal Plain Of Virginia With The Glacial-Eustatic Sea-Level Curve, Timothy Wullschleger Scott

OES Theses and Dissertations

Late Pleistocene sediments mapped along Virginia's southeastern coastal plain record deposition by high-frequency cycles during isotope stages 5 to 1. Correlations between several geologic units both south (S) and east (E) of the Chesapeake Bay have proven difficult due to insufficient dating methods. To improve these regional correlations, two members of the Tabb Formation on Virginia's southside and two formations on the southern Delmarva Peninsula were selected for stratigraphic analyses. Ground penetrating radar provided geologic details in areas where samples were collected for optically stimulated luminescence (OSL) dating. The stratigraphically older units, Sedgefield Member of the Tabb Formation (S) and …