Engineering Commons^™

Preferential Flow Path Effects On Subsurface Contaminant Transport In Alluvial Floodplains, Derek M. Heeren, Ronald B. Miller, Gary A. Fox, Daniel E. Storm, Chad J. Penn, Todd Halihan

Department of Agricultural and Biological Systems Engineering: Faculty Publications

For strongly sorbing contaminants, transport from upland areas to surface water systems is typically considered to be due to surface runoff with subsurface transport assumed negligible. However, certain local conditions can lead to an environment where subsurface transport to streams may be significant, a source of contamination not alleviated by current best management practices (e.g. riparian buffers). The Ozark region, including parts of Oklahoma, Arkansas, and Missouri, is characterized by cherty, gravelly soils and gravel bed streams. Previous research identified a preferential flow path (PFP) at a field site along the Barren Fork Creek in northeastern Oklahoma. With the subsoils …

Deployed Software Analysis, Madeline M. Diep

School of Computing: Dissertations, Theses, and Student Research

Profiling can offer a valuable characterization of software behavior. The richer the characterization is, the more effective the client analyses are in supporting quality assurance activities. For today's complex software, however, obtaining a rich characterization with the input provided by in-house test suites is becoming more difficult and expensive. Extending the profiling activity to deployed environments can mitigate this shortcoming by exposing more program behavior reflecting real software usage. To make profiling of deployed software plausible, however, we need to take into consideration that there are fundamental differences between the development and the deployed environments. Deployed environments allow for less …

Acuta Enews May 2009, Vol 38, No. 5

ACUTA Newsletters

In This Issue

Report from Annual Conference in Altanta

See the Conference on Your Desktop

Tech talk: Revisiting the iPhone in an Ever-careful way............ Kevin Tanzillo, Dux PR

From ACUTA Headquarters: What's New with Social Networking at ACUTA?... Jeri Semer, CAE, Exec. Dir.

DC update .........Dave Ostrom, Washington state University (retired)

lnfo Links ............ Randy Hayes, Univ. of Northern lowa

Board Report, April............ Riny Ledgerwood, San Diego state University

Free Cabling Resource Guide

Another Great Conference, More Terrific Prizes!

Welcome New Members

Check lt Out: RFls/RFPs, Job Postings, Press Releases, Special. Deals!

Annual Conference Photo Supplement

Robust Image And Video Coding With Adaptive Rate Control, Hongqiang Wang

Department of Computer Electronics and Engineering: Dissertations, Theses, and Student Research

This dissertation is focused on the problem of rate allocation in a resource constrained environment and robustness of video coding over noise channels. A new rate allocation scheme that combines the traditional PCRD-Opt algorithm with the rho domain analysis is proposed for wavelet based image coders. The proposed scheme provides competitive performance as compared with the optimal PCRD-Opt algorithm, while with great reduction on complexity and computational costs. Rate allocation is developed for the Region-Of-Interest (ROI) in the wavelet transform domain for image coding. A recursive region growing method that deter mines the ROI in the transform domain is proposed. …

A Kinetic Study Of In Vitro Lysis Of Mycobacterium Smegmatis , William J. Valente, Elsje Pienaar, A. Fast, A. Fluitt, Scott E. Whitney, Robert J. Fenton, Raul G. Barletta, O. Chacon, Hendrik J. Viljoen

Hendrik J. Viljoen Publications

The traditional diagnostic tests for tuberculosis consist of an acid fast stain and a culture test from a sputum sample. With the emergence of drug resistant strains of tuberculosis, nucleic acid amplification has become the diagnostic test of choice. The nucleic acid amplification test consists of four steps: sputum sample collection, lysis of bacilli to release DNA, DNA amplification by PCR and detection of PCR products. The DNA extraction step has been largely overlooked and this study describes a systematic approach to measure the kinetics of cell lysis in a Tris–EDTA buffer. Mycobacterium smegmatis is a saphorytic, fast-growing mycobacterium that …

Acuta Enews April 2009, Vol 38, No. 4

ACUTA Newsletters

ln This lssue

From the President.. .....Corinne Hoch, Columbia Univ., ACUTA President

Board Report......... Riny Ledgerwood, San Diego State Univ., ACUTA Secretory/Treasurer

Tech Talk: After a Long Dry Spell, We Find a Good Acronym ....... Kevin Tanzillo, Dux PR

Corporate Liaison Committee

DC Update ................ Dave Ostrom, Washington State Univ. (retired)

"Financial Crisis Activity in Washington" Newsletter for ACUTA Members

Turning Business Relationships into Partnerships ..... Don Leone, Siemens Enterprise Communications

Q & A from the ACUTA Listserv

lnfo Links .......... Randy Hayes, Univ. of Northern lowa

Welcome New Members

Check lt Out: Press Releases...Job Postings...RFls/RFPs

Recent Progress In Acoustic Travel-Time Tomography Of The Atmospheric Surface Layer, Vladimir E. Ostashev, Sergey N. Vecherin, D. Keith Wilson, Astrid Ziemann, George H. Goedecke

United States Army: Publications

Acoustic tomography of the atmospheric surface layer (ASL) is based on measurements of the travel times of sound propagation between sources and receivers which constitute a tomography array. Then, the temperature and wind velocity fields inside the tomographic volume or area are reconstructed using different inverse algorithms. Improved knowledge of these fields is important in many practical applications. Tomography has certain advantages in comparison with currently used instrumentation for measurement of the temperature and wind velocity. In this paper, a short historical overview of acoustic tomography of the atmosphere is presented. The main emphasis is on recent progress in acoustic …

Changes And Challenges In Uncertain Times: When The Only Constant Is Change

ACUTA: Other Publications

The Forums

Since 1997, the annual ACUTA Forum for Strategic Leadership in Information Communications Technology has provided a unique for campus leaders to exchange ideas and discuss issues relevant to the use technology in meeting the goals of higher education. Held in conjunction with ACUTA's Annual Conference and Exhibition, this forum brings together men and women of vision, foresight, and authority to discuss strategic directions for the campus of the future.

Goals

• To provide a venue for the examination of issues and challenges facing the higher education community as we grapple with planning, financing, and implementing technology on our campuses. …

Nebraska Blueprint- Spring/Summer 2009

Nebraska Blueprint (Student Publication)

Table of Contents:

From the Editor

UCARE: Behind the Scenes

Semiconductor Material for High Efficiency Solar Cells

Hospital Patient Discharge Process Improvement

Testing Henzlik Crosswalk Emissions

ZNETH: Zero Net Energy Test House

Minimizing the Minimal in Surgery

Assessment Of Superstructure Ice Protection As Applied To Offshore Oil Operations Safety, Charles C. Ryerson

United States Army: Publications

Offshore oil exploration and production operators in high latitude regions recognize icing as a seasonal challenge. Icing is often accepted as an inconvenience, but that tolerance can rapidly become a safety hazard that requires solutions. This report evaluates the superstructure and atmospheric icing hazard on offshore platforms and supply boats with location and operation on the structure. It also explains the potential impact of icing on these locations and operations by icing type: sea spray, snow, glaze, rime, frost, and sleet. Fourteen ice protection technology categories are identified for anti-icing, deicing, and ice detection. These technologies include chemicals, icephobic coatings, …

Nondestructive Method To Detect Corrosion Of Steel Elements In Concrete, Saeed Javidi Niroumand, Aaron Jon Yakel, Atorod Azizinamini, Marcelo Dasilva

Nebraska Department of Transportation: Research Reports

No abstract provided.

Multiscale Modeling Of Impact On Heterogeneous Viscoelastic Solids With Evolving Microcracks, Flavio V. Souza

Department of Engineering Mechanics: Dissertations, Theses, and Student Research

Multiscale computational techniques play a major role in solving problems related to viscoelastic composite materials due to the complexities inherent to these materials. In the present work, a numerical procedure for multiscale modeling of impact on heterogeneous viscoelastic solids containing evolving microcracks is proposed in which the (global scale) homogenized viscoelastic incremental constitutive equations have the same form as the local scale viscoelastic incremental constitutive equations, but the homogenized tangent constitutive tensor and the homogenized incremental history dependent stress tensor depend on the amount of damage accumulated at the local scale. Furthermore, the developed technique allows the computation of the …

Scanning Tunneling Microscopy On Epitaxial Bilayer Graphene On Ruthenium (0001), Eli A. Sutter, D.P. Acharya, J.T. Sadowski, P. Sutter

Department of Electrical and Computer Engineering: Faculty Publications

The atomic structure of epitaxial single and bilayer graphene on Ru(0001) was studied by scanning tunneling microscopy (STM). High-resolution imaging of the surface of single layer graphene shows a moiré with pronounced buckling and broken A/B carbon sublayer symmetry due to a strong interaction with the metal substrate. The top sheet of bilayer graphene is largely unperturbed by residual interactions with the substrate. Screened from the metal substrate, it shows the hallmarks of freestanding monolayer graphene: a honeycomb structure with equivalent carbon sublattices imaged in STM and a linear dispersion of bands near the Dirac point.

Where Does Your Institution Stand?, Wendell Brase, Mark Askren

Information Technology Services: Publications

Media coverage of sustainability and "green" issues is hard to ignore these days. But less clear is a specific understanding of what this agenda means within higher ed IT organizations. For starters, it's useful to self-assess whether your campus is a leading innovator on all things "green" or satisfied to remain inconspicuous in the middle of the pack. If your institution is trailing but wants to assert a leadership role in environmental stewardship, you need to get engaged to understand what it will take to catch up and how IT can be a leader, not just a contributor, to such …

Automated Ellipsometer And The Like Systems, Blaine D. Johs, Ping He, Martin M. Liphardt, Christopher A. Goeden, John A. Woollam, James D. Welch

Department of Electrical and Computer Engineering: Faculty Publications

Systems and methodology for orienting the tip/tilt and vertical height of samples, preferably automated, as applied in ellipsometer and the like systems.

Automated Ellipsometer And The Like Systems, Blaine D. Johs, Ping He, Martin M. Liphardt, Christopher A. Goeden, Johns A. Woollam, James D. Welch

Department of Electrical and Computer Engineering: Faculty Publications

Systems and methodology for orienting the tip/tilt ad vertical height of samples, preferably automated, as applied in ellipsometer and the like systems

A Model For Predicting The Multiscale Crack Growth Due To An Impact In Heterogeneous Viscoelastic Solids, Flavio V. Souza, David H. Allen

Department of Engineering Mechanics: Faculty Publications

A two-scale model for predicting the multiple crack growth in viscoelastic solids due to an impact is presented. The cracks are considered only at the local scale through the use of a micromechanical viscoelastic cohesive zone model. The multiscale model has been implemented in a finite-element code. In order to minimize the computation time, the local finite-element meshes are solved in parallel by multiple processors. An example problem is given in order to demonstrate the capabilities of the model.

Acuta Enews March 2009, Vol 38, No. 3

ACUTA Newsletters

ln This Issue

ACUTA Audio Seminar: FERPA

From ACUTA Headquarters: Member Anniversaries Jeri Semer, CAE, Exec. Dir.

DC Update ...........Dave Ostrom, Washington State University (retired)

Tech Talk: FCoE May Figure into Your Storage Future..........Kevin Tanzillo, Dux PR

Making the Most of ACUTA Resources...... Carolyn Trail, Roanoke College

Higher Ed Belt Tightening ls Squeezing Technology Operations.... Kevin Tanzillo... Dux PR

Winner of Free Audio Seminar

lnfo Links ........... Randy Hayes, Univ. of Northern lowa

Overheard on the Listserv: SIP Trunking to the PSTN

Board Report, February.... Riny Ledgerwood, San Diego State University

Check lt Out: RFls/RFPs, Job Postings, Press Releases, Special …

Perspectives On Energy Policy: Security, Economics, And The Environment, Sandia National Laboratories

United States Department of Energy: Publications

On March 18 and 19, 2009, Sandia National Labo­ratories and the University of California San Diego (UCSD) Sustainability Solutions Institute (SSI) brought together 27 leaders from academia, govern­ment, and the private sector to discuss key energy policy issues and proposed values- and outcomes-based approaches to energy policy. The goal of the workshop was to bring together leaders from diverse backgrounds to identify promising areas for energy policy, based on the understanding of intersecting issues, assumptions, and priorities from the national security, economic, and environmental perspectives.

Participants:  Charles Kennel, University of California, San Diego; Les Shephard, Sandia National Laboratories; Michael Aimone, …

Marketing For Summer Session: What Do The Students Want?, Paul Savory

Department of Industrial and Management Systems Engineering: Faculty Publications

Dr. Savory will share four campaign ideas his office developed to better target Summer Sessions marketing to the new generation of students. Each is unique and generates different reactions. He will talk about which was chosen and the campus reaction of choosing an “edgy” theme. He will also highlight the challenges and impact of offering a “Bucks for Summer Books” sweepstakes targeting freshman and sophomore students to take summer courses.

Synthesis And Characterization Of Hazelnut Oil-Based Biodiesel, Yixiang Xu, Milford Hanna

Department of Agricultural and Biological Systems Engineering: Faculty Publications

The demand for diesel fuel far exceeds the current and future biodiesel production capabilities of the vegetable oil and animal fat industries. New oilseed crops that do not compete with traditional food crop are needed to meet existing energy demands. Hybrid hazelnut oil is just such an attractive raw material for production of biodiesel. Hazelnut oil was extracted from hybrid hazelnuts and the crude oil was refined. Hazelnut oil-based biodiesel was prepared via the transesterification of the refined hazelnut oil with excess methanol using an alkaline catalyst. The effects of reaction temperature, time and catalyst concentration on the yield of …

Adsorption And Desorption Of Phosphorus And Nitrogen By Immersed Stalks, John E. Gilley, Bahman Eghball, David B. Marx

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Adsorption and desorption of phosphorus (P) and nitrogen (N) by stalk residues may influence the concentrations of P and N in runoff. A laboratory study was conducted to measure the effects of P and N constituents in solution on adsorption and desorption of P and N by corn, soybean, and wheat stalk residues. Experimental variables included type of stalk material (corn, soybean, and wheat), inorganic nutrients in solution (PO₄-P and NO₃-N; PO₄-P and NH₄-N; NO₃-N and NH₄-N; and PO₄-P, NO₃-N, and NH₄-N), …

Thermodynamically Coupled Heat And Mass Flows In A Reaction-Transport System With External Resistances, Yaşar Demirel

Yaşar Demirel Publications

Considerable work has been published on mathematically coupled nonlinear differential equations by neglecting thermodynamic coupling between heat and mass flows in reaction-transport systems. The thermodynamic coupling refers that a flow occurs without or against its primary thermodynamic driving force, which may be a gradient of temperature, or chemical potential, or reaction affinity. This study presents the modeling of thermodynamically coupled heat and mass flows of two components in a reaction-transport system with external heat and mass transfer resistances. The modeling equations are based on the linear nonequilibrium thermodynamics approach by assuming that the system is in the vicinity of global …

Estimating Vertical Stress On Soil Subjected To Vehicular Loading, Tyler Olmstead, Erika Fischer

United States Army: Publications

This report describes a preliminary study in support of ongoing research to model soil stress resulting from vehicular traffic on unprepared ground. The soils used in this study were sand, wet sand, and silt. The soils in the prepared soil beds were first characterized as to strength, density, and plasticity. Then pressure sensors were embedded at depths of 2 and 5 in. These were then traversed several times by a Mine Detonation Trailer (MDT) and the pressure produced by a single chosen wheel re-corded. The actual measured load of this wheel was 4700 pounds. The same series of measurements were …

90-Billion Gallon Biofuel Deployment Study -- Executive Summary, Sandia National Laboratories

United States Department of Energy: Publications

This study concludes that 90 billion gallons per year of biomass-derived ethanol can be produced and distributed with enduring government commitment and continued technological progress. Specifically, the model projects that 90 billion gallons of ethanol can be produced per year in the U.S.: 15 billion gallons per year from corn ethanol, with the balance from cellulosic ethanol.

Risk Mitigation For Highway And Railway Bridges, Andrzej S. Nowak, Marek Kozikowski,, Marta Lutomirska,

Mid-America Transportation Center: Final Reports and Technical Briefs

Performance of the transportation network strongly depends on the performance of bridges. Bridges constitute a vital part of the transportation infrastructure system and they are vulnerable to extreme events such as natural disasters (i.e., hurricanes, earthquakes, floods, major storms), as well as hazards stemming from negligence and improper maintenance, collisions (vessels and vehicles), intentional acts of vandalism, and terrorist attacks. These structures must be protected but the current approach to risk is not rational. Therefore, the objective of this project is to develop efficient risk analysis procedures for assessment of the actual safety reserve in highway and railway bridges. The …

Acuta Enews February 2009, Vol 38, No. 2

ACUTA Newsletters

In This Issue

From the President............. Corinne Hoch, Columbia Univ., ACUTA President

Strategic Leadership forum

Tech Talk: "VoIP Is Dead" declaration isn't cause to worry........... Kevin Tanzillo, Dux PR

Cast your vote in ACUTA election

DC update.............. Dave Ostrom, Washington State Univ. (retired)

Board Report.............. Riny Ledgewood, San Diego State Univ., ACUTA Secretary/Treasurer

Welcome New Members

Check it out: press releases.... job postings.... RFIs/FRPs

Analysis Of Flux-Base Fins For Estimation Of Heat Transfer Coefficient, Kevin D. Cole, C. Tarawneh, B. Wilson

Department of Mechanical and Materials Engineering: Faculty Publications

Exact solutions are given for the transient temperature in flux-base fins with the method of Green’s functions (GF) in the form of infinite series for three different tip conditions. The speed of convergence is improved by replacing the steady part by a closed-form steady solution. For the insulated-tip case, a quasi-steady solution is presented. Numerical values are presented and the conditions under which the quasi-steady solution is accurate are determined. An experimental example is given for estimation of the heat transfer coefficient (HTC) on a non-rotating roller bearing, in which the outer bearing race is treated as a transient fin.

Newsletters Of First 10 Years, Tractor Museum

Friends of the Larsen Tractor Museum

Newsletters distributed to supporters of the Larsen Tractor Museum.

1998 Spring Newsletter 1 - Non-profit Status, Dedication of Museum, Nebraska Tractor Test Law Beginnings

1998 Winter Newsletter 2 - First Annual Meeting, Library Established, State Fair Report, Winnepeg Plowing Contests

1999 Spring Newsletter 3 - Nebraska State Museum Affiliation, Fundraising Goals, Fuel Saving Devices in the 1920s

1999 Fall Newsletter 4 - Museum Studies Luis Vasquez, Tractor Raffle, Renovation Goals, Fundraising Goals, Annalyzing Tractor Test Results

1999 Winter Newsletter 5 - Mission Statement, Logo and Letterhead, Tractor Storage Facility, Bylaw Amendments, Hand Tool History, The Davidson Traction Dynamometer

2000 Spring …

Computer Aided Modeling Of Soil Mix Designs To Predict Characteristics And Properties Of Stabilized Road Bases, Charles W. Berryman Ph.D., Cpc, Wayne Jensen Ph.D., Tim Hensley P.E.

Mid-America Transportation Center: Final Reports and Technical Briefs

Considerable data exists for soils that were tested and documented, both for native properties and properties with pozzolan stabilization. While the data exists there was no database for the Nebraska Department of Roads to retrieve this data for predicting soil properties. The conventional methods used to determine soil properties, such as maximum laboratory density and optimum moisture content, were tedious, labor intensive and time consuming. When soil stabilization is involved, more time and efforts are needed to determine maximum laboratory density, optimum moisture content and optimum pozzolan content. The objective of this project was to develop a computerized model to …