Engineering Commons^™

Material Selection And Design Consideration For Moisture Damage Of Asphalt Pavement, Jamilla Emi Sudo Lutif, Yong-Rak Kim

Nebraska Department of Transportation: Research Reports

No abstract provided.

Crumb Rubber In Performance-Graded Asphalt Binder, Wayne Jensen, Magdy Abdelrahman

Nebraska Department of Transportation: Research Reports

No abstract provided.

Self-Similarity Of Mean Flow In Pipe Turbulence, Junke Guo

Department of Civil and Environmental Engineering: Faculty Publications

Based on our previous modified log-wake law in turbulent pipe ‡flows, we invent two compound similarity numbers (Y;U), where Y is a combination of the inner variable y+ and outer variable , and U is the pure exect of the wall. The two similarity numbers can well collapse mean velocity profile data with different moderate and large Reynolds numbers into a single universal profile. We then propose an arctangent law for the buffer layer and a general log law for the outer region in terms of (Y;U). From Milikan’s maximum velocity law and the Princeton superpipe data, we derive the …

Competitive Metagenomic Dna Hybridization Identifies Host-Specific Microbial Genetic Markers In Cow Fecal Samples, Orin C. Shanks, Jorge W. Santo Domingo, Regina Lamendella, Catherine A. Kelty, James E. Graham

United States Environmental Protection Agency: Staff Publications

Several PCR methods have recently been developed to identify fecal contamination in surface waters. In all cases, researchers have relied on one gene or one microorganism for selection of host-specific markers. Here we describe the application of a genome fragment enrichment (GFE) method to identify host-specific genetic markers from fecal microbial community DNA. As a proof of concept, bovine fecal DNA was challenged against a porcine fecal DNA background to select for bovine-specific DNA sequences. Bioinformatic analyses of 380 bovine enriched metagenomic sequences indicated a preponderance of Bacteroidales-like regions predicted to encode membrane-associated and secreted proteins. Oligonucleotide primers capable …

Behavior And Design Of Buried Concrete Pipes, Ece Erdogmus, Maher K. Tadros

Nebraska Department of Transportation: Research Reports

No abstract provided.

On The Spatial Nature Of The Groundwater Pumping Externality, Nicholas Brozovic, David L. Sunding, David Zilberman

Daugherty Water for Food Global Institute: Faculty Publications

Most existing economic analyses of optimal groundwater management use single-cell aquifer models, which assume that an aquifer responds uniformly and instantly to ground- water pumping. This paper demonstrates how spatially explicit aquifer response equations from the water resources engineering literature may be embedded in a general economic framework. Calibration of our theoretical model to published economic studies of spe- cific aquifers demonstrates that, by averaging basin drawdown across the entire resource, existing studies generally understate the magnitude of the groundwater pumping external- ity relative to spatially explicit models. For the aquifers studied, the drawdown predicted by single- cell models may …

Multiobjective Plan Selection Optimization For Traffic Responsive Control, Montasir M. Abbas, Anuj Sharma

Department of Civil and Environmental Engineering: Faculty Publications

Optimal coordination of traffic signals requires proper activation of timing plans to match current traffic conditions. One of the greatest challenges in configuring a traffic responsive plan selection control mode is how to select only n number of timing plans (restricted by traffic controller memory limitations) to address possibly all traffic conditions/states that can be encountered in the field, for a specific site, but most importantly, how to associate each of these traffic conditions to one of the n timing plans stored in the traffic controller. This paper uses a multiobjective non-dominated sorting genetic algorithm to (1) select the best …

Course Portfolio For Arch333/Cnst305: Building Environmental Technical Systems, Tim Wentz

UNL Faculty Course Portfolios

Due to the critical nature of team-based learning in this course, I propose to study the learning aspects of team-based learning, as I envision it in this course. Not having formally investigated this issue previously, I am left with a sense that some teams perform much better than other teams. I am looking for those criteria that separate the good teams from underperforming teams. Some of the issues that occur to me as I start this process include the following: - Team size - Academic diversity - Discipline diversity - Gender diversity - Geographic diversity How students best learn in …

Risk Of Colon Cancer In Hereditary Non-Polyposis Colorectal Cancer Patients As Predicted By Fuzzy Modeling: Influence Of Smoking, Rhonda M. Brand, David D. Jones, Henry T. Lynch, Randall E. Brand, Patrice Watson, Ramesh Ashwathnayaran, Hemant K. Roy

Department of Biological Systems Engineering: Papers and Publications

AIM: To investigate whether a fuzzy logic model could predict colorectal cancer (CRC) risk engendered by smoking in hereditary non-polyposis colorectal cancer (HNPCC) patients.

METHODS: Three hundred and forty HNPCC mismatch repair (MMR) mutation carriers from the Creighton University Hereditary Cancer Institute Registry were selected for modeling. Age-dependent curves were generated to elucidate the joint effects between gene mutation (hMLH1 or hMSH2), gender, and smoking status on the probability of developing CRC.

RESULTS: Smoking significantly increased CRC risk in male hMSH2 mutation carriers (P < 0.05). hMLH1 mutations augmented CRC risk relative to hMSH2 mutation carriers for males (P < 0.05). Males had a significantly higher risk of CRC than females for hMLH1 non smokers (P < 0.05), hMLH1 smokers (P < 0.1) and hMSH2 smokers (P < 0.1). Smoking promoted CRC in a dose-dependent manner in hMSH2 in males (P < 0.05). Females with hMSH2 mutations and both sexes with the hMLH1 groups only demonstrated a smoking effect after an extensive smoking history (P < 0.05).

CONCLUSION: CRC promotion by smoking in HNPCC patients is dependent on gene mutation, gender and age. …

Restricted-Zone Requirements For Superpave Mixes Made With Local Aggregate Sources, Yong-Rak Kim

Nebraska Department of Transportation: Research Reports

No abstract provided.

Intersection Safety, Aemal Khattak

Nebraska Department of Transportation: Research Reports

The objectives of this project included a study to determine the safety effects of intersection type (unsignalized, signalized, and interchange) on Nebraska expressway intersections, quantification of the safety effects of a Collision Countermeasure System (CCS), and update of the Nebraska Department of Roads (NDOR) expressway intersection guidelines. The CCS is an Intelligent Transportation Systems (ITS) traffic control device to warn drivers of conflicting cross-traffic at rural, non-signalized intersections. The goal was that if found effective, the CCS will become part of the intersection designer’s options for expressway intersection design (other options being an interchange, traffic signals, and traffic control signs). …

Pipeline Inspection Technologies Demonstration Report Final

United States Department of Transportation -- Publications & Papers

The pipeline infrastructure is a critical element in the energy delivery system across the United States. Its failure can affect both public health and safety directly and indirectly through impacts on the energy supply. The pipeline infrastructure is aging, while at the same time Research & Development (R&D) funding from the pipeline industry to develop technologies to assure its integrity is experiencing budgetary constraints. Total R&D funding is being further reduced through the elimination of programs resulting from restructuring within the government and energy industry.

The Pipeline & Hazardous Materials Safety Administration (PHMSA), Pipeline Safety R&D Program mission is to …

Peer Review Report 2006

United States Department of Transportation -- Publications & Papers

This document is reporting findings from the research peer reviews held February 7-9, 2006 for PHMSA’s Pipeline Safety Research and Development Program. The findings and recommendations in this report derive from the scoring and comments collected from the peer review panelists.

Department of Transportation (DOT) Operating Agencies (OA) are required to begin a systematic process for peer review planning for all influential and highly influential information that the OA plans to disseminate in the “foreseeable” future.

Through the Information Quality Act, Congress directed Office of Management and Budget (OMB) to “provide policy and procedural guidance to Federal agencies for ensuring …

Rd&T Program Overview 2006

United States Department of Transportation -- Publications & Papers

PHMSA Mission

PHMSA Supports DOT Goals

RD&T Overview

PHMSA RD&T Program Appropriations

Pipeline Safety RD&T

Pipeline Safety RD&T Hierarchy

Systematic RD&T Implementation

Safety

Environment

Hazardous Materials Safety RD&T

Safety -- Global Connectivity -- Environmental Stewardship -- Security: Strategies

Safety -- Global Connectivity -- Environmental Stewardship -- Security: Future Trends and Developments

Safety -- Global Connectivity -- Environmental Stewardship -- Security: Anticipated RD&T Needs

Hazmat Elements & Goals

Hazmat Elements & Possible Products

Hazardous Materials Transportation Cooperative Research Program

PHMSA RD&T Contacts

Advanced Welding And Joining Technical Workshop: Pipelines

United States Department of Transportation -- Publications & Papers

The National Institute of Standards and Technology (NIST) strongly supports the drive toward safer pipelines, and joined with the Pipeline and Hazardous Materials Safety Administration (PHMSA) to advance this goal. NIST in collaboration with PHMSA and several pipeline industry trade organizations, organized and executed the Advanced Welding and Joining Technical Workshop on January 25 and 26, 2006 workshop in Boulder, Colorado.

Assistance in organizing the workshop came from an 18-person steering committee selected to represent the different interests in the pipeline industry. This committee helped to prepare the agenda, identify speakers, organize the working groups, and promote attendance.

The workshop …

The Role Of Energy Pipelines And Research In The United States, Cheryl J. Trench, Thomas O. Miesner

United States Department of Transportation -- Publications & Papers

Energy from oil and natural gas is essential, and will continue to be essential, to all facets of our daily lives. It fuels most of our transportation needs, heats our homes, schools, offices and shops, and even generates a share of our electricity. Oil and natural gas together supply approximately two-thirds of the U.S. energy needs.

Crude oil and natural gas are generally produced in regions located far from consumption centers. This means crude oil must be moved to refineries, and refined products and natural gas must be moved from producing regions to consumption centers.

The U.S. pipeline infrastructure is …

Mechanical Damage Workshop & Study Phase 1 Workshop Executive Summary, Michael Baker Jr.

United States Department of Transportation -- Publications & Papers

Mechanical damage from third party intrusion and latent defects caused during pipeline construction remains a leading cause of major pipeline incidents. Historically, mechanical damage is the single largest cause of failures on pipelines (transporting both natural gas and hazardous liquids).

Significant investments have been made by the Pipeline and Hazardous Materials Safety Administration (PHMSA), the pipeline industry and stakeholder organizations to increase public awareness of the risks of excavation in pipeline corridors. Likewise, much as been invested in research regarding detection of mechanical damage using in-line inspection (ILI) technologies, evaluating the severity of mechanical damage, and mitigation measures. However, no …

Changes In Manganese And Lead In The Environment And Young Children Associated With The Introduction Of Methylcyclopentadienyl Manganese Tricarbonyl In Gasoline—Preliminary Results, Brian Gulson, Karen Mizon, Alan Taylor, Michael Korsch, Jennifer Stauber, J. Michael Davis, Honway Louis, Michael Wu, Hilton Swan

United States Environmental Protection Agency: Staff Publications

A 4-year longitudinal study is being conducted to evaluate potential changes to the environment and exposure of young children associated with the introduction of methylcyclopentadienyl manganese tricarbonyl (MMT) into Australia in 2001. The cohort consists of 57 females and 56 males, with an age range of 0.29–3.9 years. Samples are collected every 6 months from children in residences located at varying distances from major traffic thoroughfares in Sydney. Environmental samples include air, house, and daycare center dustfall, soil, dust sweepings, and gasoline; samples from the children include blood, urine, handwipes prior to and after playing outdoors, and a 6-day duplicate …

Inter-Habitat Variation In The Benthos Of The Upper Missouri River (North Dakota, Usa): Implications For Great River Bioassessment, Ted Angradi, E. William Schweiger, David Bolgrien

United States Environmental Protection Agency: Staff Publications

We examined inter-habitat variation in benthic macroinvertebrate assemblages in the 180-km Garrison Reach of the Upper Missouri River, North Dakota (USA) in 2001–2003. The Garrison Reach is unchannelized with a mostly rural setting. Flows are regulated by Garrison Dam. We sampled benthos from three habitats defined a priori: channel, shoreline, and backwater. Benthic assemblages were different in each habitat. Average Bray-Curtis dissimilarity in assemblage composition ranged from 89% for backwater versus channel habitat to 70% for backwater versus shoreline habitat. There were distinct intra-habitat groups within a priori habitats: channel assemblages included moving-sand assemblages and other-substrate channel assemblages; backwater assemblages …

Research Needs In Water Resources And Environment: A Panel Discussion, Otto J. Helweg, Joseph Orlins, Dale Bucks, Regan Murray, David Trueman, Raymond Walton

United States Environmental Protection Agency: Staff Publications

Practicing engineers sometimes criticize researchers for answering questions that no one is asking, or at least for conducting research on questions of personal interest or in areas that funding agencies think are important. Although such research has a place in the overall picture of things, it is instructive to consider the practical issues that engineers in the field face. The fields of water resources and environment are very broad, and only a small number of research users could be included on the panel seated by the Education and Research Council at the 2004 World Water and Environmental Resources Congress. One …

The Fathead Minnow In Aquatic Toxicology: Past, Present And Future, Gerald T. Ankley, Daniel L. Villeneuve

United States Environmental Protection Agency: Staff Publications

This paper reviews the roles of the fathead minnow (Pimephales promelas) as a small fish model in the field of aquatic toxicology. The species has been (and is) extensively used both for regulatory testing and research, especially in North America. For example, tests with the fathead minnow, ranging from 48-h lethality through partial and full life-cycle assays, are routinely used for regulatory programs aimed at assessing potential risks of new chemicals such as high-production volume materials and pesticides, as well as impacts of complex mixtures like effluents. The species also has been used for a wide variety of …

Performance Evaluation Of The Permanent New Jersey Safety Shape Barrier – Update To Nchrp 350 Test No. 4-12 (2214nj-2), Karla A. Polivka, Ronald K. Faller, Dean L. Sicking, John R. Rohde, Robert W. Bielenberg, John D. Reid, Brian A. Coon

Mid-America Transportation Center: Final Reports and Technical Briefs

Based on the proposed changes to the National Cooperative Highway Research Program (NCHRP) Report No. 350 guidelines, NCHRP Project 22-14(2) researchers deemed it appropriate to evaluate permanent safety shape barrier systems prior to finalizing the new crash testing procedures and guidelines. For this effort, the permanent New Jersey Safety Shape barrier was selected for evaluation. One full-scale vehicle crash test was performed on the longitudinal barrier system in accordance with the Test Level 4 (TL-4) requirements presented in the Update to NCHRP Report No. 350. For the permanent barrier testing program, a 10000S single unit truck was used.

The permanent …

Implementation Of The Biological Opinion For The Missouri River Mainstem System, Missouri River Bank Stabilization And Navigation Project, And Kansas River Reservoir System

US Army Corps of Engineers

The Endangered Species Act (ESA) requires that the Corps of Engineers (Corps), in coordination with the appropriate resource agencies, will ensure that any action authorized, funded or carried out is not likely to jeopardize the continued existence of any federally listed threatened or endangered species or result in the destruction or adverse modification of critical habitat. On November 30, 2000, formal consultation between the U.S. Fish and Wildlife Service (USFWS) and the Corps under Section 7 of the ESA culminated with the "Biological Opinion on the Operation of the Missouri River Main Stem System, Operation and Maintenance of the Missouri …

Biological Opinion On The Operation Of The Missouri River Main Stem System, Missouri River Bank Stabilization And Navigation Project, And Operation Of The Kansas River Reservoir System

US Army Corps of Engineers

The U.S. Army Corps of Engineers (Corps) prepares an annual report for interested parties in accordance with the reporting requirements of the “Biological Opinion (BiOp) on the Operation of the Missouri River Main Stem System, Operation and Maintenance of the Missouri River Bank Stabilization and Navigation Project (BSNP), and Operation of the Kansas River Reservoir System” prepared by the U.S. Fish and Wildlife Service (Service) dated November 30, 2000 and the Amendment, thereto, dated December 16, 2003.

This annual report documents the Corps threatened and endangered species conservation activities to comply with the provisions of the 2000 BiOp and the …

U.S. Army Corps Of Engineers Omaha District Monthly Drought Report, January 2006

US Army Corps of Engineers

Current Conditions

Water Year 2006 Mountain Snow

Drought Outlook

Ft. Peck, Montana

Reservoir Elevation Overview

Water Intake Overview

AccessOverview

Noxious Weeds Overview

Cultural Resources Overview

Garrison, North Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Boat Ramp Information

Noxious Weeds Overview

Cultural Resources Overview

Other Areas of Interest/Concern

Oahe, South Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Mainstem Reservoir Information, Weekly Elevation Comparison 5 DEC 2005 through 26 DEC 2005

Mainstem Reservoir Storage Comparison Water Year 2004 vs. Water Year 2005

Ft. Peck,MT

Garrison, ND

Oahe, SD

U.S. Army Corps Of Engineers Omaha District Monthly Drought Report, July 2006

US Army Corps of Engineers

Current Conditions

Water Year 2006 Mountain Snow

Drought Outlook

Ft. Peck, Montana

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Garrison, North Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Boat Ramp Information

Noxious Weeds Overview

Cultural Resources Overview

Other Areas of Interest/Concern

Oahe, South Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Mainstem Reservoir Information, Weekly Elevation Comparison 5 JUN 2006 through 26 JUN 2006

Mainstem Reservoir Storage Comparison Water Years 2004, 2005, 2006

Ft. Peck, MT

Garrison, ND

Oahe, SD

U.S. Army Corps Of Engineers Omaha District Monthly Drought Report, March 2006

US Army Corps of Engineers

Current Conditions

Water Year 2006 Mountain Snow

Drought Outlook

Ft. Peck, Montana

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Garrison, North Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Boat Ramp Information

Noxious Weeds Overview

Cultural Resources Overview

Other Areas of Interest/Concern

Oahe, South Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Mainstem Reservoir Information, Weekly Elevation Comparison 5 DEC 2005 through 26 DEC 2005

Mainstem Reservoir Storage Comparison Water Year 2004 vs. Water Year 2005

Ft. Peck, MT

Garrison, ND

Oahe, SD

U.S. Army Corps Of Engineers Omaha District Monthly Drought Report, May 2006

US Army Corps of Engineers

Current Conditions

Water Year 2006 Mountain Snow

Drought Outlook

Ft. Peck, Montana

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Garrison, North Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Boat Ramp Information

Noxious Weeds Overview

Cultural Resources Overview

Other Areas of Interest/Concern

Oahe, South Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Mainstem Reservoir Information, Weekly Elevation Comparison 3 APR 2006 through 24 APR 2006

Mainstem Reservoir Storage Comparison Water Years 2004, 2005, 2006

Ft. Peck, MT

Garrison, ND

Oahe, SD

U.S. Army Corps Of Engineers Omaha District Monthly Drought Report, August 2006

US Army Corps of Engineers

Current Conditions

Drought Outlook

Ft. Peck, Montana

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Garrison, North Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Boat Ramp Information

Noxious Weeds Overview

Cultural Resources Overview

Other Areas of Interest/Concern

Oahe, South Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Mainstem Reservoir Information, Weekly Elevation Comparison 5 JUN 2006 through 26 JUN 2006

Mainstem Reservoir Storage Comparison Water Years 2004, 2005, 2006

Ft. Peck, MT

Garrison, ND

Oahe, SD

U.S. Army Corps Of Engineers Omaha District Monthly Drought Report, September 2006

US Army Corps of Engineers

Current Conditions

Drought Outlook

Ft. Peck, Montana

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Garrison, North Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Boat Ramp Information

Noxious Weeds Overview

Cultural Resources Overview

Other Areas of Interest/Concern

Oahe, South Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Mainstem Reservoir Information, Weekly Elevation Comparison 7 AUG 2006 through 28 AUG 2006

Mainstem Reservoir Storage Comparison Water Years 2004, 2005, 2006

Ft. Peck, MT

Garrison, ND

Oahe, SD