Civil and Environmental Engineering Commons^™

Effect Of Coating Viscoelasticity On Quality Factor And Limit Of Detection Of Microcantilever Chemical Sensors, Isabelle Dufour, Frederic Lochon, Stephen M. Heinrich, Fabien Josse, Dominique Rebiere

Civil and Environmental Engineering Faculty Research and Publications

Microcantilevers with polymer coatings hold great promise as resonant chemical sensors. It is known that the sensitivity of the coated cantilever increases with coating thickness; however, increasing this thickness also results in an increase of the frequency noise due to a decrease of the quality factor. By taking into account only the losses associated with the silicon beam and the surrounding medium, the decrease of the quality factor cannot be explained. In this paper, an analytical expression is obtained for the quality factor, which accounts for viscoelastic losses in the coating. This expression explains the observed decrease of the quality …

The International Fuel Tax Agreement (Ifta) And International Registration Plan (Irp): Allocating Commercial Fuel Tax And Registration Fee Payments Across Multiple Jurisdictions, Lenahan O'Connell, Juita-Elena Wie Yusuf, Merl Hackbart

Kentucky Transportation Center Research Report

This report provides: (1) an overview of the IFTA and IRP processes for allocating fuel tax revenues across jurisdictions; and (2) an assessment of these systems in regard to their effectiveness at allocating the tax and fee burden among commercial carriers in an efficient and accurate manner. Three aspects of the system were assessed by answering the following questions: (1) Is the system effectively fostering cooperation among the 58 jurisdictions governed by the IFTA and IRP agreements? (2) Is it effectively promoting the allocation of tax burdens and payments among the jurisdictions? and (3) Is it effectively collecting tax payments …

Using Neural Networks For The Diagnosis And Repair Of Corroded Steel In Reinforced Concrete Structures, Youssef Ibrahim Fayez

Archived Theses and Dissertations

No abstract provided.

Effective Recharge From Stream Beds In Arid Basins, Sherif Kamal Fouad Kamel

Archived Theses and Dissertations

Arid regions are characterized by scarce rainfall with long dry periods in-between the storms. These regions of the world are under severe and increasing pressure because the water shortage is almost the main obstacle facing their development plans. Assessment of the natural renewable water resources is urgently needed these days. This study appraises the effective groundwater recharge from ephemeral streams in arid regions. The assessment of the effective recharge is through the development of a numerical model coupling the surface model (SWMM) and the subsurface model (HYDRUS-ID).

A Computer-Aided-Learning Tool For Teaching Construction Engineering Decision Making: An Excavation Stage Educational Game, Hosnachah Ahmed Refaat Mekkawi

Archived Theses and Dissertations

No abstract provided.

Fractionation Of Natural Organic Matter In Nile Water To Reduce Disinfection By-Products Formation, Ahmed Abdul Aziz Al Qabany

Archived Theses and Dissertations

No abstract provided.

Bs News

Building Services Engineering

No abstract provided.

Theoretical Analysis Of Strong-Axis Bending Mode Vibrations For Resonant Microcantilever (Bio)Chemical Sensors In Gas Or Liquid Phase, Isabelle Dufour, Stephen M. Heinrich, Fabien Josse

Civil and Environmental Engineering Faculty Research and Publications

The frequency stability, sensitivity, and limit of detection of a coated-cantilever chemical sensor operating in a dynamic mode are mainly determined by its mechanical quality factor. While a coated-cantilever operating in the gas phase exhibits a large reduction in quality factor, immersion in liquids results in an even greater reduction in the Q-factor due to displaced fluid mass and losses in the surrounding liquid. In this paper, two different bending vibration modes are studied in order to minimize both the losses induced by the surrounding medium and the displaced fluid mass, thus increasing the quality factor and sensitivity and improving …

Lake Whatcom Model Calibration With Variable Stoichiometry In Sediments - Revised, Chris Berger, Scott A. Wells

Civil and Environmental Engineering Faculty Publications and Presentations

This memorandum discusses model calibration and enhancements made to the Lake Whatcom water quality model. Model development and initial calibration were documented in the report “Lake Whatcom Water Quality Model” (Berger and Wells, 2005). The Lake Whatcom water quality model has been converted from CE-QUAL-W2 version 3.2 to version 3.5 (Cole and Wells, 2006).

Effect Of Initial Surface Treatment Timing On Chloride Concentrations In Concrete Bridge Decks, Aimee Worthen Birdsall

Theses and Dissertations

Bridge engineers and managers in coastal areas and cold regions frequently specify the application of surface treatments on concrete bridge decks as barriers against chloride ingress. In consideration of concrete cover thickness and the presence of stay-in-place metal forms (SIPMFs), the objective of this research was to determine the latest timing of initial surface treatment applications on concrete bridge decks subjected to external chloride loading before chlorides accumulate in sufficient quantities to initiate corrosion during the service life of the deck. Chloride concentration data for this research were collected from 12 concrete bridge decks located within the I-215 corridor in …

Sub-Surface Corrosion Research On Rock Bolt System, Perforated Ss Sheets And Steel Sets For Yucca Mountain Repository, Dhanesh Chandra, Jaak J.K. Daemen

Publications (YM)

Outline

Metallurgical Issues in Underground Repository Reinforcement Support for Nuclear Materials Storage in simulated Yucca Mountain Environment used for Corrosion Issues
Issues related to I-beams (Low Carbon) and Rock Bolts (Med. Carbon)

Experimental

Results

1. Corrosion Tests- Effect of Ionic Concentration (1x,10x,100x), Temperature, concentration and aeration/deaeration effects in YM waters (RB and I-Beam)
2. Hydrogen Permeation Tests
3. Environmentally Assisted Corrosion Tests - Stress Corrosion Cracking/Hydrogen Embrittlement in 100x YM water concentration at Room Temperature and 85oC (I-Beams)

Application Of Classical Versus Bayesian Statistical Methods To On-Line Radiological Monitoring, Amy Attardo

All Theses

The on-line monitoring for illicit radioactive material with a minimum number of false detections is a critical need for homeland security. The primary objectives of this work were to apply both Bayesian and classical statistical process control chart techniques to the on-line monitoring of radiological data and to then compare the Type I and Type II error incidence rates. Two versions of the cumulative sum (CUSUM) and Shiryayev-Roberts (S-R) procedures known as total reset and alarm reset methods were developed. The best method in terms of Type I errors was the S-R total reset method. In terms of Type II …

Hydrologic Monitoring Of An Integrated Low Impact Development (Lid) Underdrained Stormwater Management System , Nancy-Jeanne Bachmann

Dissertations, Master's Theses and Master's Reports - Open

In 2005, Wetland Studies and Solutions, Inc. (WSSI) installed an extensive Low Impact Development (LID) stormwater management system on their new office site in Gainesville, Virginia. The 4-acre site is serviced by a network of LID components: permeable pavements (two proprietary and one gravel type), bioretention cell / rain garden, green roof, vegetated swale, rainwater harvesting and drip irrigation, and slow-release underground detention. The site consists of heavy clay soils, and the LID components are mostly integrated by a series of underdrain pipes. A comprehensive monitoring system has been designed and installed to measure hydrologic performance throughout the LID, underdrained …

Evaluation Of An Existing Steel Post Alternative For The Thrie Beam Bullnose Guardrail System, Robert W. Bielenberg, Ronald K. Faller, John R. Rohde, John D. Reid

Mid-America Transportation Center: Final Reports and Technical Briefs

Recently, the Minnesota Department of Transportation (MnDOT) funded a research project through the Midwest States Regional Pooled Fund to evaluate an existing steel post alternative for the thrie beam bullnose barrier system previously developed at the Midwest Roadside Safety Facility (MwRSF). MnDOT had an interest in the replacement of the wooden breakaway posts used in the current bullnose system with proprietary breakaway steel posts. The research project consisted of evaluation of current breakaway steel post designs, investigation and selection of a candidate post design, and full-scale testing of the bullnose system with a steel post alternative. The full-scale testing was …

Effects Of Subsurface Drainage On Pavement Performance, James Crovetti, Kathleen T. Hall

Transportation Reports with the Wisconsin Department of Transportation

This report evaluates the effects of subsurface drainage features on pavement performance through a program of inspection and testing of the subsurface drainage features present in the Long-Term Pavement Performance (LTPP) SPS-1 and SPS-2 field sections. The report will be of particular interest to engineers in the public and private sectors with responsibility for the design, construction, and rehabilitation of highway pavements.

Water Quality Modelling In Dublin From Bray To Balbriggan Gdsds/75407/130, Aodh Dowley, Zeinab Bedri

Reports

No abstract provided.

Selected Lid Projects In New England, New England Environmental Finance Center

Planning

Examples of low impact development (LID) projects in each state in New England.

Analysis And Kinetics Of The Sequencing Batch Reactors, Udeme J. Ndon

Faculty Publications

Fundamental analysis and kinetics of treatment reactors are major topics in environmental engineering literature. These fundamental topics in reactor processes are well known for the ideal batch reactor, the continuous stirred tank reactor, and the plug flow reactor. The sequencing batch reactors (SBRs) are relatively new in the field, but are widely used. Despite the wide application of sequencing batch reactors in the field, information is lacking on the fundamental analysis and kinetics, especially with comparison to the ideal batch reactor. This report presents analysis and kinetics of the sequencing batch reactors and compares the kinetics equations developed with those …

Final Report: Production Of Biodiesel From Algae Applied To Agricultural Wastewater Treatment, Yarrow M. Nelson, Adam Feffer, Andrew Kean, Tryg Lundquist, Walter Mark, Linda Vanasupa, Sam Vigil, Ian Woertz

Civil and Environmental Engineering

No abstract provided.

Multiple-Model Framework For Assessment Of Real-Time Crash Risk, Anurag Pande

Civil and Environmental Engineering

This study is based on real-time models of risk assessment for rear-end and lane-change-related crashes on freeways. These models were developed in recent studies on the basis of historical crash data and corresponding traffic data collected through underground loop detectors on Interstate-4 in Orlando, Florida. In this study the potential of these models was explored for identification of crashes that were not part of the database used to develop the models. These crashes include single-vehicle crashes that might result from evasive actions taken by drivers to avoid vehicles in front (i.e., a rear-end crash) or in a neighboring lane (i.e., …

The Structural Reliability Of Bridges Subject To Time-Dependent Deterioration, Colin C. Caprani, C. Mcnally, E. J. O'Brien, A. Bordallo-Ruiz

Conference papers

The reliability of the structural performance of any given structure is affected by both in-service loading and material deterioration due to environmental attack. They must be evaluated at any given time in order to compute lifetime probability of failure. This paper presents an innovative methodology to derive the structure lifetime load effect due to existing traffic using a statistical tool known as Predictive Likelihood. Loss of resistance due to corrosion originated by chloride ingression is also taken into account. Finally the lifetime probability of failure is evaluated via the application of a time-discretization strategy.

Position And Orientation Correction For Pipe Profiling Robots, Andrew John Dettmer

Doctoral Dissertations

Sewer pipelines are prevalent, important, valuable, unnoticed, and often in a state of disrepair. Pipeline inspection is essential for effective management of wastewater systems and is now mandated for many municipalities complying with the Governmental Accounting Standards Board Statement 34 and EPA regulations. Pipe inspection robots are routinely used to inspect underground pipelines for cracks, deformations, leaks, blockages and other anomalies to prevent catastrophic failure and to ensure cost effective maintenance and renewal. Most existing pipe inspection robots only collect video footage of pipe condition. Pipe profiling technology has recently been introduced to allow for measurement of the internal coordinate …

Assessment Of The Safety Benefits Of Vms And Vsl Using The Ucf Driving Simulator, Cristina Dos Santos

Electronic Theses and Dissertations

Researchers at the University of Central Florida (UCF) have been working during the past few years on different strategies to improve freeway safety in real-time. An ongoing research at UCF has investigated crash patterns that occurred on a stretch of Interstate-4 located in Orlando, FL and created statistical models to predict in real-time the likelihood of a crash in terms of time and space. The models were then tested using PARAMICS micro-simulation and different strategies that would reduce the risk of crashes were suggested. One of the main recommended strategies was the use of Variable Speed Limits (VSL) which intervenes …

Visual Traffic Movement Counts At Intersection For Origin-Destination (O-D) Trip Table Estimation, S. Lee, Hojong Baik, J. Park

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Origin-destination (O-D) trip table is necessary information for transportation planning and traffic impact study. However, current O-D estimations rely on estimated directional traffic counts at intersections, which obviously diminish reliability in the table. A video-based vehicle tracking system that utilizes wide view-angle lenses has been studied [26] to provide accurate direction traffic counts. The system expands the area covered by a single camera and uses a particle filtering method to handle environmental changes as well as geometric distortion caused by those lenses. This paper shows tracking capability of the system and also shows how to incorporate the directional traffic counts …

Treatment Of Wastewater Containing Phenol And Heavy Metals Using Natural Zeolite And Bioaugmentation, Patrick Brian Jameson

ETD Archive

No abstract provided.

Report To Dot/Phmsa Steering Committee On Collaborative Demonstration Of Guided Wave Ultrasonics, Daphne D'Zurko

United States Department of Transportation: Publications

NYSEARCH/NGA and DOT/PHMSA have an existing R & D contract, DTRS56-05-T-0002, in place to enhance and validate the TWI/FBS Teletest™ Long Range Guided Wave Ultrasonic Testing System. During 2006, the second year of this contract, several controlled tests were performed at the NYSEARCH/NGA test bed and several are also being done on live jobs at NYSEARCH member companies. Through this process, NYSEARCH has amassed the experience and facilities to test and evaluate various guided wave systems.

At the request of DOT/PHMSA, in June 2006, a task was added to the R & D contract, to conduct a collaborative demonstration of …

U.S. Army Corps Of Engineers Omaha District Monthly Drought Report, April 2007

United States Army Corps of Engineers, Omaha District

Current Conditions

Drought Outlook

Missouri River Region Mountain Snowpack Report

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 MAR 2007 through 26 MAR 2007

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, July 2007

United States Army Corps of Engineers, Omaha District

Current Conditions

Drought Outlook

Missouri River Region Mountain Snowpack Report

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 4 JUNE 2007 through 25 JUNE 2007

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 2007

United States Army Corps of Engineers, Omaha District

Current Conditions

Drought Outlook

Missouri River Region Mountain Snowpack Report

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 FEB 2007 through 26 FEB 2007

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 2007

United States Army Corps of Engineers, Omaha District

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 6 AUGUST 2007 through 27 AUGUST 2007

Mainstem Reservoir Storage Comparison Water Years 2004, 2005, 2006, 2007

Ft. Peck, MT

Garrison, ND

Oahe, SD