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Articles 1411 - 1440 of 1677
Full-Text Articles in Civil and Environmental Engineering
Object-Oriented Building Extraction And Three-Dimensional Representation Of Building Temperatures In Indianapolis, U.S.A., Jing Han
All-Inclusive List of Electronic Theses and Dissertations
With a rapid development of world population, urbanization has become an important issue in the past century and generated great pressure on the environment. In order to assist urban decision-makers to present, analyze, and solve related issues, accurate and timely spatial information is n~eded in urban areas. This research focused on building information extraction and the relationship analysis of buildings and temperatures in the downtown Indianapolis, IN. Through object-oriented classification, the image derived from LiDAR data was segmented into objects, and spectral, spatial, and textual attributes of objects were measured and selected to extract buildings. Moreover, each building's surface temperature …
The Very Basics Of Sustainability - An Alternative Viewpoint (Slides With Audio) (Large File! To Speed Up Download, Right-Click On "Download" Link To Save To Own Pc.), Jim Mcgovern
Other resources
This presentation sets out the very basics of ‘sustainability’, although a definition of sustainability is not attempted. Some of the very basics are the context in which the Earth and humankind exist in space and time, the Earth’s climate, the Earth’s population and humankind’s options and choices. The author advocates keeping an open mind on all available options, including the use of oil, gas, coal, tar sands, carbon capture and sequestration, nuclear power etc., as well as the technologies that are more widely considered ‘green’. The author also argues that, in addressing the challenges that humankind faces, globally concerted effort …
Using Geographically Weighted Regression Models To Analyze Crash Harm, Libin Zheng
Using Geographically Weighted Regression Models To Analyze Crash Harm, Libin Zheng
Civil & Environmental Engineering Theses & Dissertations
Society pays a high cost for collisions in terms of property damage, injuries and loss of life. This paper has two objectives. One is to examine various factors associated with harm caused by highway collisions. Both global OLS and local GWR models are provided to identify specific variables influencing crash harm. Another objective is to demonstrate the use of a Geographically Weighted Regression (GWR) method in this complex safety problem, which can estimate models for each crash location and show spatial variation. The results show that the GWR model is a significant improvement on the OLS model; the test for …
Land Conservation And Land Use In New England: Trends, Challenges & Opportunities, Amanda Loomis, Tom Devine, Andrea Small, Brittany Howard, Brett Richardson, Stephanie Dulac
Land Conservation And Land Use In New England: Trends, Challenges & Opportunities, Amanda Loomis, Tom Devine, Andrea Small, Brittany Howard, Brett Richardson, Stephanie Dulac
Land Conservation
Sprawling development patterns accelerated across the New England landscape in the last three decades and consumed the region‘s forests, farms, and open spaces at an unprecedented rate. New England‘ers in all six states formed land trusts, supported statewide conservation organizations, and collaborated with state and federal partners to protect some of their most-prized recreation lands, wildlife habitats, and working lands. The current economic recession has slowed development pressures across the region and offers an opportunity to build on recent successes. The time is right to plan a coordinated New England conservation strategy that protects and links the region‘s natural assets. …
Slides: Groundwater Law And Administration: From Conflict To Reform, Michael A. Gheleta
Slides: Groundwater Law And Administration: From Conflict To Reform, Michael A. Gheleta
Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)
Presenter: Michael A. Gheleta, Brownstein Hyatt Farber Schreck LLP, Denver, CO
14 slides
Slides: Challenges For Reclamation: A Western States' Perspective, Craig Bell
Slides: Challenges For Reclamation: A Western States' Perspective, Craig Bell
Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)
Presenter: Craig Bell, Western Water States Council, Midvale, Utah
9 slides
Slides: Status Of Southern Nevada Water Authority (Snwa): Third Intake Into Lake Mead And Groundwater Project, Kay Brothers
Slides: Status Of Southern Nevada Water Authority (Snwa): Third Intake Into Lake Mead And Groundwater Project, Kay Brothers
Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)
Presenter: Kay Brothers, Southern Nevada Water Authority (SNWA), Las Vegas, NV
37 slides
Slides: Northern Integrated Supply Project, Northern Front Range--Colorado, Don Carlson
Slides: Northern Integrated Supply Project, Northern Front Range--Colorado, Don Carlson
Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)
Presenter: Don Carlson, Northern Colorado Water Conservancy District
20 slides
Slides: Water Leasing In The Lower Arkansas Valley: The "Super Ditch Company", Peter Nichols
Slides: Water Leasing In The Lower Arkansas Valley: The "Super Ditch Company", Peter Nichols
Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)
Presenter: Peter NIchols, Trout, Raley, Montano, Witwer & Freeman, Denver, CO
28 slides
Slides: Transboundary Solutions: A Water Trust, Policy, And Environmental Flows For The Colorado River Delta, Jennifer Pitt
Slides: Transboundary Solutions: A Water Trust, Policy, And Environmental Flows For The Colorado River Delta, Jennifer Pitt
Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)
Presenter: Jennifer Pitt, Environmental Defense Fund, Boulder, CO
26 slides
Slides: Delta Overview, Leo Winternitz
Slides: Delta Overview, Leo Winternitz
Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)
Presenter: Leo Winternitz, The Nature Conservancy, California Water Program, Sacramento, CA
17 slides
Slides: Groundwater Declines, Climate Change And Approaches To Adaptation, Katharine Jacobs
Slides: Groundwater Declines, Climate Change And Approaches To Adaptation, Katharine Jacobs
Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)
Presenter: Katharine Jacobs, Director of the Arizona Water Institute, University of Arizona
37 slides
Agenda: Western Water Law, Policy And Management: Ripples, Currents, And New Channels For Inquiry, University Of Colorado Boulder. Natural Resources Law Center, Western Water Policy Program
Agenda: Western Water Law, Policy And Management: Ripples, Currents, And New Channels For Inquiry, University Of Colorado Boulder. Natural Resources Law Center, Western Water Policy Program
Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)
In many pockets of the American West, stresses and demands on water resources are overwhelming our capacity to effectively manage change and accommodate the diversity of interests and values associated with our limited water resources.
This event will offer an opportunity for lawyers, policymakers, and water professionals to engage the experts on the challenges and emerging solutions to the most pressing water policy and management issues of the day.
Slides: Unquenchable, Robert Glennon
Slides: Unquenchable, Robert Glennon
Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)
Presenter: Robert Glennon, Morris K. Udall Professor of Law and Public Policy, James E. Rogers College of Law, University of Arizona
56 slides
Slides: Finding Flows: Fish Still Need Water Everyday, Melinda Kassen
Slides: Finding Flows: Fish Still Need Water Everyday, Melinda Kassen
Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)
Presenter: Melinda Kassen, Director of the Western Water Project, Trout Unlimited
12 slides
Slides: Oil Shale Water Use: Upsetting The Apple-Cart Of River Habitat, Irrigation And Existing Water Rights?, Bart Miller
Slides: Oil Shale Water Use: Upsetting The Apple-Cart Of River Habitat, Irrigation And Existing Water Rights?, Bart Miller
Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)
Presenter: Bart Miller, Western Resource Advocates, Boulder, CO
13 slides
Slides: Integrated Policy, Planning, And Management Of Water Resources, Robert Wilkinson
Slides: Integrated Policy, Planning, And Management Of Water Resources, Robert Wilkinson
Western Water Law, Policy and Management: Ripples, Currents, and New Channels for Inquiry (Martz Summer Conference, June 3-5)
Presenter: Robert Wilkinson, Ph.D., Director of the Water Policy Program, Donald Bren School of Environmental Science and Management, University of California-- Santa Barbara
60 slides
South Burlington Vt: New Urbanist South Village, Jack Kartez, Richard Barringer
South Burlington Vt: New Urbanist South Village, Jack Kartez, Richard Barringer
Planning
The 220 acre master plan for South Village, the largest project in the City of South Burlington’s history, encompasses multiple housing types and innovative provisions for affordable housing. It integrates housing with open space and natural resource conservation, including a major Community Supported Agriculture project developed by a nonprofit partner, the Intervale Foundation. While not a mixed-use project (that is, commercial as well as residential development), South Village nonetheless represents a qualitative change in approach for South Burlington by incorporating large-scale open space preservation as part of development and multiple housing-types in one project. The case study recounts events leading …
Environmental Durability Of Reinforced Concrete Deck Girders Strengthened For Shear With Surface Bonded Carbon Fiber-Reinforced Polymer, Christopher Higgins, Matthew R. Dawson, Mikal M. Mitchell, Gautam Sopal, A. Ekin Senturk
Environmental Durability Of Reinforced Concrete Deck Girders Strengthened For Shear With Surface Bonded Carbon Fiber-Reinforced Polymer, Christopher Higgins, Matthew R. Dawson, Mikal M. Mitchell, Gautam Sopal, A. Ekin Senturk
TREC Final Reports
This research investigated the durability of carbon fiber-reinforced polymer composites (CFRP) used for shear strengthening reinforced concrete deck girders. Large beams were used to avoid accounting for size effects in the data analysis. The effort included determining the role of freeze-thaw, moisture, and fatigue on structural performance and developing analytical design procedures that account for durability.
The results showed that moisture infiltration behind the CFRP, combined with freeze-thaw, was critical in reducing shear panel stiffness and shear capacity. Long-term moisture exposure alone produced only a minor decrease in shear capacity. Freeze-thaw, combined with fatigue, had little effect on shear capacity …
College Of Engineering Senior Design Competition Spring 2009, University Of Nevada, Las Vegas
College Of Engineering Senior Design Competition Spring 2009, University Of Nevada, Las Vegas
Fred and Harriet Cox Senior Design Competition Projects
Part of every UNLV engineering student’s academic experience, the senior design project stimulates engineering innovation and entrepreneurship. Each student in their senior year chooses, plans, designs, and prototypes a product in this required element of the curriculum. A capstone to the student’s educational career, the senior design project encourages the student to use everything learned in the engineering program to create a practical, real world solution to an engineering challenge.
The senior design competition helps to focus the senior students in increasing the quality and potential for commercial application for their design projects. Judges from local industry evaluate the projects …
Practical Approximations To Quantify The Impact Of Time Windows And Delivery Sizes On Vmt Multi-Stop Tours, Miguel A. Figliozzi
Practical Approximations To Quantify The Impact Of Time Windows And Delivery Sizes On Vmt Multi-Stop Tours, Miguel A. Figliozzi
Civil and Environmental Engineering Faculty Publications and Presentations
This paper studies approximations to the average length of Vehicle Routing Problems (VRP). The approximations are valuable for strategic and planning analysis of transportation and logistics problems. The research focus is on VRP with varying number of customers, demands, and locations. This modeling environment can be used in transport and logistics models that deal with a distribution center serving an area with daily variations in the demand. The routes are calculated daily based on what freight is available. New approximations and experimental settings are introduced. Average distance travelled is estimated as a function of the number of customers served and …
A Hurricane Evacuation Route System Real-Time Monitoring And Distribution Of Load, Anup Khanal
A Hurricane Evacuation Route System Real-Time Monitoring And Distribution Of Load, Anup Khanal
Electrical & Computer Engineering Theses & Dissertations
Hurricane evacuation is one of the major steps in diminishing the devastating effects of hurricanes on lives and properties. The challenge in evacuating a large number of people in a short time is the severe congestion faced in the transportation network, leading to long delays and shortages. Standard hurricane evacuation plans focus on how to best utilize the main arteries. The research challenge is to not overload the fastest routes and to utilize all the routes efficiently. The evacuation routing system proposed in this thesis focuses on distributing the traffic load throughout the network, utilizing alternative routes not considered in …
Implementation Requirements For The Notice Architecture In Vehicular Communications, Dusadee Treeumnuk
Implementation Requirements For The Notice Architecture In Vehicular Communications, Dusadee Treeumnuk
Electrical & Computer Engineering Theses & Dissertations
Many studies have been focusing on Vehicular Ad-Hoc Networking (VANET) in order to increase the quality of traffic and life on the road. An important aspect in vehicular communications is maintaining the privacy and security of VANET. NOTICE is an emerging architecture promising efficient traffic notification as well as strong immunity to malicious attacks, leading to improvement of safety and reduction of traffic congestion on roadways. To enable secure traffic notification, the NOTICE system employs vehicle-to-infrastructure (V2I) communication rather than vehicle-to-vehicle (V2V) communication like in traditional VANET. The infrastructure consists of sensor belts which are embedded in the roadway and …
Economic Impact Of South Dakota’S Regional Water Systems, Matthew J. Pajl, Delvin E. Deboer, Gary Taylor, Dwight Adamson
Economic Impact Of South Dakota’S Regional Water Systems, Matthew J. Pajl, Delvin E. Deboer, Gary Taylor, Dwight Adamson
Water and Environmental Engineering Research Reports
Regional water systems are a primary conduit of water supply for much of South Dakota’s rural and small community populations. As of 2006, greater than one-third of South Dakota’s population was served by water supplied from regional water systems, and when Lewis and Clark Rural Water delivers water to Sioux Falls, over one-half of South Dakota’s population will be served by regional water systems. Greater than 75% of incorporated communities with public water supplies are served by regional water systems, either as bulk communities or as individual customers. Many farms and agricultural industries use rural water for domestic use, livestock …
Temperature Influence And Heat Management Requirements Of Microalgae Cultivation In Photobioreactors, Thomas Hagen Mehlitz
Temperature Influence And Heat Management Requirements Of Microalgae Cultivation In Photobioreactors, Thomas Hagen Mehlitz
Master's Theses
Microalgae are considered one of the most promising feedstocks for biofuel production for the future. The most efficient way to produce vast amounts of algal biomass is the use of closed tubular photobioreactors (PBR). The heat requirement for a given system is a major concern since the best algae growth rates are obtained between 25-30 °C, depending on the specific strain. A procedure to determine temperature influence on algal growth rates was developed for a lab-scale PBR system using the species Chlorella. A maximum growth rate of 1.44 doublings per day at 29 °C (optimal temperature) was determined. In addition, …
Application Of Lrfd Geotechnical Principles For Pile Supported Bridges In Oregon: Phase 1, Trevor D. Smith, Peter Dusicka
Application Of Lrfd Geotechnical Principles For Pile Supported Bridges In Oregon: Phase 1, Trevor D. Smith, Peter Dusicka
TREC Final Reports
Bridge foundations must be designed based on acceptable risks of failure. To secure rapid implementation of Load Resistance Factor Design (LRFD) principles for foundation design, the American Association of State Highway and Transportation Officials (AASHTO) and the Federal Highway Administration (FHWA) are requiring their use through AASHTO code. The Bridge Section of the Oregon Department of Transportation (ODOT) has responsibility for satisfactory design of all the bridge structures across the state’s highway system. The widespread geotechnical adoption of the LRFD code throughout state DOTs has been difficult in the case of deep foundations due to regional differences and in some …
Urban Transportation Planning Decision Making: A Robustness Analysis Approach, Deogratias Eustace
Urban Transportation Planning Decision Making: A Robustness Analysis Approach, Deogratias Eustace
Civil and Environmental Engineering and Engineering Mechanics Faculty Publications
Travel demand modeling remains a cornerstone of the transportation planning process. Although current transportation planning procedures are mostly performed by an interdisciplinary team approach, there are still a number of institutional issues which may hinder the process from providing the best results. According to Marshment (2001), the most notable setback is a lack of coordination between land use and transportation planning. Most of the time, land use plans do not reflect the influence of the accessibility to the alternative transportation facilities.
The lack of interaction between land use and transportation planning may play a major role in using unrealistic and …
Finite Element Modeling Of Nondestructive Test Methods Used For Detection Of Delamination In Hot Mix Asphalt Pavements, Dante Mejia Munoz
Finite Element Modeling Of Nondestructive Test Methods Used For Detection Of Delamination In Hot Mix Asphalt Pavements, Dante Mejia Munoz
Open Access Theses & Dissertations
For the simulation of detection of delamination this study focus on three NDT methods: Impact Echo, Impulse Response and Ultrasonic Surface Waves. The was evaluated and then a parametric study was elaborated.
How Can We Best Manage Freeway Congestion?, Robert Bertini, Christopher Monsere
How Can We Best Manage Freeway Congestion?, Robert Bertini, Christopher Monsere
TREC Project Briefs
Researchers from Portland State University evaluate Oregon’s Implementation of System-Wide Adaptive Ramp Metering (SWARM).
Using Archived Its Data To Measure The Operational Benefits Of A System-Wide Adaptive Ramp Metering System, Robert L. Bertini, Christopher Monsere, Oren Eshel, Soyoung Ahn
Using Archived Its Data To Measure The Operational Benefits Of A System-Wide Adaptive Ramp Metering System, Robert L. Bertini, Christopher Monsere, Oren Eshel, Soyoung Ahn
Civil and Environmental Engineering Faculty Publications and Presentations
A System-Wide Adaptive Ramp Metering (SWARM) system has been implemented in the Portland, Oregon metropolitan area, replacing the previous pre-timed ramp-metering system that had been in operation since 1981. SWARM has been deployed on six major corridors and operates during the morning and afternoon peak hours. This report presents results of a "before" and "after" evaluation of the performance of two freeway corridors as part of ongoing efforts to measure the benefits of the new SWARM system, as compared to the pre-timed system. The study benefited from using the existing regional data, surveillance and communications infrastructure in addition to a …