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Articles 1 - 30 of 211
Full-Text Articles in Civil and Environmental Engineering
Estimation Of Parameters For Calibration And Validation Of Monochlorobenzene Flux, Christina Hill
Estimation Of Parameters For Calibration And Validation Of Monochlorobenzene Flux, Christina Hill
Electronic Dissertations and Theses
Research is currently being conducted to enhance the existing pump-and-treat remediation strategy at the Petro Processors, Incorporated site (PPI)-a petrochemical disposal site consisting of two locations in East Baton Rouge Parish (Louisiana). Monochlorobenzene, a biodegradation byproduct of hexaclorobenzene, is a toxic chemical prevalent at the site; the diffusivity of monochlorobenzene is being studied through desorption experiments. The objective of soil desorption experiments is to determine soil-water distribution or partition coefficients. Partitioning is the distribution of solutes between two phases such as solid phase and a liquid (aqueous) phase. The derivation of acceptable partition coefficients "are used in [models] to determine …
Prediction Of Lake-Level Changes For Various Climatic Scenarios Using A Water-Balance Model, Waubay Lakes Chain, Northeastern South Dakota (Task 2), Northern Great Plains Water Resources Research Center, Patrick J. Emmons
Prediction Of Lake-Level Changes For Various Climatic Scenarios Using A Water-Balance Model, Waubay Lakes Chain, Northeastern South Dakota (Task 2), Northern Great Plains Water Resources Research Center, Patrick J. Emmons
Civil and Environmental Engineering Reports and Manuals
From the Executive Summary:
The closed basins area, which includes parts of Day, Marshall, Roberts, Codington, and Clark Counties, in northeastern South Dakota, was declared a Federal Disaster Area in 1990. Under the sponsorship of Region 8 of the Federal Emergency management Agency, an interagency study team was formed to conduct an interdisciplinary scientific investigation of the flooding n the closed basins area. Agencies represented include Federal Emergency Management Agency, U.S. Geological Survey, U.S. Army Corp of Engineers, South Dakota State University, Natural Resources Conservation Service, South Dakota Department of Environment and Natural Resources, and the South Dakota Geological Survey. …
Public Perceptions Of The Midwest’S Pavements - Iowa - Phase Ii (State Wide Survey Report), Marquette University Research Team, Transportation Research Center
Public Perceptions Of The Midwest’S Pavements - Iowa - Phase Ii (State Wide Survey Report), Marquette University Research Team, Transportation Research Center
Transportation Research Center: Public Perception of Midwest Pavements
This report covers Phase II of a three-phase pooled-fund project in Wisconsin, Iowa and Minnesota, to determine the perception/satisfaction levels of the driving public and how they correlate with the states’ physical data bases used to determine priorities for pavement improvements on rural, two-lane highways. In addition, policy issues of trust and improvement trade-offs are addressed.
In Phase I, six focus groups were conducted in each state to determine the beliefs and issues about pavements that could be used to draft statewide questionnaires. Focus groups were held during the last half of 1996 in all three states. From the focus …
A Summary Of Highway Revenues, Distributions, & Expenses For Indiana Counties, Cities & Towns 1999, John Habermann
A Summary Of Highway Revenues, Distributions, & Expenses For Indiana Counties, Cities & Towns 1999, John Habermann
Indiana Local Technical Assistance Program (LTAP) Publications
This report provides information on revenues, distributions, and expenses of state and local governments for highway, road, and street work. Since the Motor Vehicle Highway (MVH) and Local Road and Street (LRS) Accounts are the principal source of funds for local road or street construction and maintenance operations, this summary may be used to see the trends in income sources and in the expenses charged to the funds prior to their being distributed to the highway, road, and street agencies.
Investigation Of Inflection Points As Brace Points In Multi-Span Purlin Roof Systems, Michael R. Bryant, Thomas M. Murray
Investigation Of Inflection Points As Brace Points In Multi-Span Purlin Roof Systems, Michael R. Bryant, Thomas M. Murray
CCFSS Library (1939 - present)
No abstract provided.
Analysis And Correctional Procedure For The Operation Of The Huntsville Botanical Garden Reciprocating Constructed Wetland, Amy Louisa Cunningham
Analysis And Correctional Procedure For The Operation Of The Huntsville Botanical Garden Reciprocating Constructed Wetland, Amy Louisa Cunningham
Honors Capstone Projects and Theses
No abstract provided.
Traffic Safety Issues Opinion Survey, Kenneth R. Agent, Jerry G. Pigman
Traffic Safety Issues Opinion Survey, Kenneth R. Agent, Jerry G. Pigman
Kentucky Transportation Center Research Report
In recent years there have been several laws both proposed and enacted in the Kentucky legislature which have dealt with various traffic safety issues. There has been discussion of various types of legislation which may be proposed in the 2000 Kentucky legislature. As a means of determining public opinion on specific traffic safety issues, a public opinion survey was conducted.
The Dayton Its Demonstration Project: Simulating Existing Conditions, Jill A. Swaynos, Nikiforos Stamatiadis
The Dayton Its Demonstration Project: Simulating Existing Conditions, Jill A. Swaynos, Nikiforos Stamatiadis
Kentucky Transportation Center Research Report
The Miami Valley Regional Planning Commission is incorporating an Advanced Traveler Information System to alleviate real-time traffic problems associated with special events at the Ervin J. Nutter Center of the Wright State University. This study of the existing conditions is part of the evaluation plan and addresses two tasks: 1) documentation of the existing conditions; and 2) definition of measures of effectiveness. The existing conditions were depicted with the use of a computer simulation software package, Traffic Software Integrated System and separate scenarios were modeled for three existing conditions: ingress and egress for a special event and a major shopping …
Artimis Telephone Travel Information Service: Overall Public Awareness, Lisa Aultman-Hall
Artimis Telephone Travel Information Service: Overall Public Awareness, Lisa Aultman-Hall
Kentucky Transportation Center Research Report
This report summarizes the results of a random telephone survey of households in the Greater Cincinnati and Northern Kentucky Area. The objective was to determine awareness of the traffic management center and its telephone travel information service. A secondary objective was to determine the public's preference for dialing and recalling phone numbers for travel information. The survey found that 39% were aware of a traffic management center while 55% were aware of a telephone traffic information service. Awareness varied by work location, household characteristics and personal attributes. Some households that could potentially benefit from the service were unaware of its …
Boundary Control For Automated Sweeping Of Finite Element Meshes, Robert A. Kerr
Boundary Control For Automated Sweeping Of Finite Element Meshes, Robert A. Kerr
Theses and Dissertations
Finite element analysis depends greatly upon a high-quality mesh to be able to provide reasonably accurate answers to engineering problems. Models that need to be analyzed using finite element analysis are becoming increasingly more complex, and correspondingly harder to mesh with good quality. Skew is one quality metric which can cause problems with finite element analyses. This thesis explains how skew is calculated, discusses two common sources of skew: multiply-linked surfaces with interval constraints, and biased edge meshes. Two methods of lessening skew in surface meshes are then presented: the skew control algorithm, and the curve morphing algorithm. These algorithms …
Comparison Of One-Dimensional And Two-Dimensional Hydrodynamic Modeling Approaches For Red River Basin, Sajjad Ahmad, Slobodan P. Simonovic
Comparison Of One-Dimensional And Two-Dimensional Hydrodynamic Modeling Approaches For Red River Basin, Sajjad Ahmad, Slobodan P. Simonovic
Civil and Environmental Engineering and Construction Faculty Research
EXECUTIVE SUMMARY
A devastating flood in Red River valley in 1997 emphasized the need to study the flood control measures in the Red River basin using state of the art modeling tools. The Red River and its floodplains can be modeled using one-dimensional, quasi two-dimensional or fully two-dimensional hydrodynamic models. Each modeling approach has its own advantages and limitations. The main purpose of this report is a comparison between one-dimensional (or quasi two dimensional) and fully two-dimensional hydrodynamic modeling approaches for modeling floods in the Red River basin.
A two-dimensional hydrodynamic model, MIKE 21, coupled with Geographic Information System (GIS) …
Biotreatment And Chemical Speciation Of Lead And Zinc Mine/Mill Wastewater Discharges In Missouri, U.S.A., Mujde Erten-Unal, Bobby G. Wixson
Biotreatment And Chemical Speciation Of Lead And Zinc Mine/Mill Wastewater Discharges In Missouri, U.S.A., Mujde Erten-Unal, Bobby G. Wixson
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Continued mining development in the world's largest lead producing area has generated and increased concern over effective mine water treatment in Missouri's New Lead Belt. A new type of mine/mill wastewater treatment system was constructed which consisted of a tailings pond followed by a series of artificially constructed meandering biotreatment channels and a polishing lagoon. This system provided additional retention time and distance for the removal of heavy metals by abundant aquatic plants and sedimentation. Seasonal field sampling and analytical testing that evaluated the present system confirmed that it provided good treatment for removal of heavy metals within the company …
Lead Binding To Metal Oxide And Organic Phases Of Natural Aquatic Biofilms, Yarrow M. Nelson, Leonard W. Lion, Michael L. Shuler, William C. Ghiorse
Lead Binding To Metal Oxide And Organic Phases Of Natural Aquatic Biofilms, Yarrow M. Nelson, Leonard W. Lion, Michael L. Shuler, William C. Ghiorse
Civil and Environmental Engineering
The role of the composition of surface-coating materials in controlling trace metal adsorption in aquatic environments was investigated using natural biofilms that developed on glass slides in three New York State lakes and a water-supply well. Adsorption isotherms were obtained for Pb binding to each of the biofilms in solutions with defined Pb speciation at 25°C and pH 6.0, with Pb concentrations ranging from 0.2 to 2.0 μM. Adsorption isotherms for Pb binding to laboratory-derived metal oxides and surrogate organic materials were determined under the same conditions. These isotherms, combined with characterization of natural biofilm composition, were used to estimate …
Capacity‐Demand‐Diagram Methods Based On Inelastic Design Spectrum, Anil K. Chopra, Rakesh K. Goel
Capacity‐Demand‐Diagram Methods Based On Inelastic Design Spectrum, Anil K. Chopra, Rakesh K. Goel
Civil and Environmental Engineering
An improved capacity‐demand‐diagram method that uses the well‐known constant‐ductility design spectrum for the demand diagram is developed and illustrated by examples. This method estimates the deformation of inelastic SDF systems consistent with the selected inelastic design spectrum, while retaining the attraction of graphical implementation of the ATC‐40 Nonlinear Static Procedure. One version of the improved method is graphically similar to ATC‐40 Procedure A whereas the second version is graphically similar to ATC‐40 Procedure B. However, the improved procedures differ from ATC‐40 procedures in one important sense. The demand diagram used is different: the constant‐ductility demand diagram for inelastic systems …
Investigation Of Feasible Pavement Design Alternatives For Wisdot, James Crovetti, Sam Owusu-Ababio
Investigation Of Feasible Pavement Design Alternatives For Wisdot, James Crovetti, Sam Owusu-Ababio
Transportation Research Center: Feasible Pavement Design Alternatives
The current pavement design and selection process of WisDOT for all new pavements or reconstructions of existing pavement structures provides for the design of one asphaltic concrete (AC) and one portland cement concrete (PCC) pavement alternative. Life-cycle costs analyses are then used to determine the preferred alternative for construction. Previous restrictions in the WisDOT pavement selection process have essentially excluded the construction of thick AC (AC thickness > 150 mm) and thin PCC (PCC thickness < 225 mm) pavements and thus the validity of current life-cycle cost inputs for these pavement types is under question.
This report presents a performance analysis of existing thick AC and thin PCC pavements constructed in and around Wisconsin. The performance trends developed indicate current design …
Guideline Policy For Snow And Ice Control, Aaron W. Braun, Dirk J. Medema
Guideline Policy For Snow And Ice Control, Aaron W. Braun, Dirk J. Medema
Indiana Local Technical Assistance Program (LTAP) Publications
These Guidelines are a compilation of information given by several agencies, such as the National Cooperative Highway Research Program, the Salt Institute, American Public Works Association, AASHTO, and many others.
Our goal was to was to gather all the information that could be useful for the Indiana Counties and Cities, add our own experience and expertise, and place it in one report.
These Guidelines are Divided into three sections. The first section is the Guidelines. It gives information and suggestions on all aspects of snow and ice control. The second section is a template for a snow and ice control …
Specification For The Design, Testing, And Utilization Of Industrial Steel Storage Racks, Rack Manufacturers Institute
Specification For The Design, Testing, And Utilization Of Industrial Steel Storage Racks, Rack Manufacturers Institute
Rack Manufacturers Institute (RMI) Specifications and Manuals (1984 - 2012)
No abstract provided.
Seismic Evaluation Of The Us41 Southbound Bridge Over The Ohio River At Henderson, Ky, Issam E. Harik, K. Vasudevan, Chelliah Madasamy, Denglin Chen, Leonong Zhou, Kevin Sutterer, Ron Street, David L. Allen
Seismic Evaluation Of The Us41 Southbound Bridge Over The Ohio River At Henderson, Ky, Issam E. Harik, K. Vasudevan, Chelliah Madasamy, Denglin Chen, Leonong Zhou, Kevin Sutterer, Ron Street, David L. Allen
Kentucky Transportation Center Research Report
This report presents the seismic evaluation of the US41 Southbound bridge over the Ohio River connecting Evansville, Indiana and Henderson, Kentucky. The main bridge is a four-span cantilever through-truss type. The approach bridge has 9 spans on the Evansville, IN side and 20 spans on the Henderson, side. Although this bridge has not yet been subjected to a moderate or major earthquake, it is situated within the influence of the New Madrid and Wabash Valley Seismic Zones.
The seismic evaluation program consisted of field testing and seismic response analysis. The modal properties of the main bridge were determined through field …
Slip Modulus Of Frp Sheets Bonded To Concrete, Y. J. Lee, T. E. Boothby, C. E. Bakis, Antonio Nanni
Slip Modulus Of Frp Sheets Bonded To Concrete, Y. J. Lee, T. E. Boothby, C. E. Bakis, Antonio Nanni
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
An analytical tension-stiffening model was developed for fiber-reinforced polymer (FRP) sheets bonded to reinforced concrete based on equilibrium equations and the assumption of linear behavior between bond stress and slip. Experimental measurements were made on small- and large-scale specimens. For the small-scale specimens, the primer coat thickness (adhesive thickness between concrete and FRP sheet) was varied for each specimen. By comparisons of the experimental data to the analytical results, the slip modulus at the concrete/FRP sheet and concrete/steel interface was established at the service load level. From this study, it was found that primer coat thickness has a modest influence …
1999 Safety Belt Usage Survey In Kentucky, Kenneth R. Agent
1999 Safety Belt Usage Survey In Kentucky, Kenneth R. Agent
Kentucky Transportation Center Research Report
The objective of this study was to establish 1999 safety belt and child safety seat usage rates in Kentucky. The 1999 survey continues to document the results after enactment of a statewide mandatory safety belt law in 1994. Data were collected at 200 sites spread across Kentucky. Data from the individual sites were combined into a statewide percentage considering function classification, geographic region, and vehicle miles traveled.
The data show that the usage rate increased in 1999 after a few years where the rate had remained at a stable level below the highest value which occurred in 1994 immediately after …
Evaluation Of The Adaptir System For Work Zone Traffic Control, Kenneth R. Agent
Evaluation Of The Adaptir System For Work Zone Traffic Control, Kenneth R. Agent
Kentucky Transportation Center Research Report
The ADAPTIR system (Automated Data Acquisition and Processing of Traffic Information in Real Time) uses variable message signs (VMS) equipped with radar units, along with a software program to interpret the data, to display appropriate warning and advisory messages to motorists approaching a work zone when certain speed and delay thresholds are met. The overall conclusion of the evaluation is that the ADAPTIR type system is an effective method to provide real time information to motorists approaching a work zone. The information relates to speed reductions, delay, and possible diversions. Drivers who traveled through the work zone when the VMS …
Seismic Evaluation Of The Us41 Northbound Bridge Over The Ohio River At Henderson, Ky, Issam E. Harik, Chelliah Madasamy, Denglin Chen, K. Vasudevan, Leonong Zhou, Kevin Sutterer, Ron Street, David L. Allen
Seismic Evaluation Of The Us41 Northbound Bridge Over The Ohio River At Henderson, Ky, Issam E. Harik, Chelliah Madasamy, Denglin Chen, K. Vasudevan, Leonong Zhou, Kevin Sutterer, Ron Street, David L. Allen
Kentucky Transportation Center Research Report
This report presents the seismic evaluation of the US41 Northbound bridge over the Ohio River connecting Evansville, Indiana and Henderson, Kentucky. The main bridge is a four-span cantilever through-truss type. The approach bridge has 8 spans on the Evansville, IN side and 35 spans on the Henderson, KY side. Although this bridge has not yet been subjected to a moderate or major earthquake, it is situated within the influence of the New Madrid and Wabash Valley Seismic Zones.
The seismic evaluation program consisted of field testing and seismic response analysis. The modal properties of the main bridge were determined through …
Metadata In A Digital Special Library: The Energy And Environmental Information Resources Center In Lafayette, Louisiana, Dan Foley
E-JASL 1999-2009 (Volumes 1-10)
This paper discusses three kinds of metadata and how they are used in the Energy & Environmental Information Resources Center (EE-IR Center), a digital special library of text, numeric, and geospatial data, located in Lafayette, Louisiana. These metadata are Dublin Core (DC), MARC21 (formerly USMARC), and Federal Geographic Data Committee (FGDC) metadata.
The EE-IR Center was formed as a partnership between the National Wetlands Research Center (NWRC) of the U.S. Geological Survey and the Center for Advanced Computer Studies of the University of Southwestern Louisiana (CACS/USL). Both partners are located in Lafayette, Louisiana. The EE-IR Center is funded by a …
Measuring Partnered Project Performance, Douglas D. Gransberg, Howard L. Reynolds, Jack Boyd
Measuring Partnered Project Performance, Douglas D. Gransberg, Howard L. Reynolds, Jack Boyd
Douglas D. Gransberg
The results of a study of over 400 projects completed by the Texas Department of Transportation over 5 years are presented. The objective was to compare the performance of construction projects on which formal partnering agreements had been executed with projects that had been completed without partnering and measure the benefits due to partnering. The data was collected by 20 different aspects, from cost and time growth to the amount of previous experience.
Water Resources Systems Analysis - Course Notes, A Bruce Bishop, Trevor Hughes, Mac Mckee
Water Resources Systems Analysis - Course Notes, A Bruce Bishop, Trevor Hughes, Mac Mckee
All ECSTATIC Materials
Water resources systems analysis course notes for CEE 6410 taught at Utah State University. Coverage includes:
Chapter 1 - Concepts and methods
Chapter 2 - Linear programming-introduction and graphical methods
Chapter 3 - Linear programming - simplex method
Chapter 4 - Linear programming - applications to simple water problems
Chapter 5 - Dual LP and post optimality analysis
Chapter 6 - Integer programming
Chapter 7 - More applications of integer programmign
Chapter 8 - Piecewise linearization
Chapter 9 - Other types of LP models
Chapter 10 - Dynamic programming
Chapter 11 - Gradient-based nonlinear optimization methods
Chapter 12 - Genetic …
The Impacts Of Using A Safety Compliance Standard In Highway Design, Paul J. Ossenbruggen
The Impacts Of Using A Safety Compliance Standard In Highway Design, Paul J. Ossenbruggen
RISK: Health, Safety & Environment (1990-2002)
Dr. Ossenbruggen introduces an algorithmic method to objectively test and evaluate safety in the highway design process.