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Agenda: Innovations In Managing Western Water: New Approaches For Balancing Environmental, Social, And Economic Outcomes, University of Colorado Boulder. Getches Wilkinson Center for Natural Resources, Energy, and the Environment 2015 University of Colorado Law School

Agenda: Innovations In Managing Western Water: New Approaches For Balancing Environmental, Social, And Economic Outcomes, University Of Colorado Boulder. Getches Wilkinson Center For Natural Resources, Energy, And The Environment

Innovations in Managing Western Water: New Approaches for Balancing Environmental, Social and Economic Outcomes (Martz Summer Conference, June 11-12)

Many aspects of western water allocation and management are the product of independent and uncoordinated actions, several occurring a century or more ago. However, in this modern era of water scarcity, it is increasingly acknowledged that more coordinated and deliberate decision-making is necessary for effectively balancing environmental, social, and economic objectives. In recent years, a variety of forums, processes, and tools have emerged to better manage the connections between regions, sectors, and publics linked by shared water systems. In this event, we explore the cutting edge efforts, the latest points of contention, and the opportunities for further progress.


Measuring Reliability In Dynamic And Stochastic Transportation Networks, Zifeng Wu 2015 University of Nebraska-Lincoln

Measuring Reliability In Dynamic And Stochastic Transportation Networks, Zifeng Wu

Civil Engineering Theses, Dissertations, and Student Research

As the traffic demand levels continue to grow in cities, more and more transportation systems experience instability during recurrent and non-recurrent congestion periods. Therefore, reliability has taken on increasing emphases in performance evaluation for transportation agencies, and in performance communication between agencies and the public. Existing reliability-related studies in transportation engineering focus on the long-term reliability of day-to-day travel time variations. This dissertation expands the reliability research literature with studies on the short-term reliability which is valuable for both real-time management and real-time traffic information systems.

This dissertation proposes a level of service reliability metric for system evaluation. Instead of ...


Sorption Of Aqueous Fe(Ii) On Goethite Investigated With Stable Oxygen Isotopes, Pu Yue 2015 Northeastern University

Sorption Of Aqueous Fe(Ii) On Goethite Investigated With Stable Oxygen Isotopes, Pu Yue

Civil Engineering Master's Theses

This thesis work is aimed at examining the oxygen atom mixing between common iron(III) oxides and Fe(II)aq solution during the sorption process. First, 18O labeled iron(III) minerals were used in batch sorption reactors to study the exchange of oxygen atom within the Fe(II)aq - iron(III) oxide system. Results showed a much lesser extent of oxygen mixing than reported Fe mixing from previous studies, even when dissolved Fe(II) is present. The oxygen mixing extents are 3.95 % more for goethite and 9.66 % more for ferrihydrite than their respective controls within 14 days ...


Validating And Applying Snl-Efdc To Current-Energy-Capture-Devices Simulation, Scott James, Mary Cardenas, Chris Hirlinger 2015 Baylor University

Validating And Applying Snl-Efdc To Current-Energy-Capture-Devices Simulation, Scott James, Mary Cardenas, Chris Hirlinger

Mary Cardenas

With the growing focus on renewable energy, there is increased interest in modeling and optimizing current energy capture (CEC) devices. The interaction of multiple wakes from CEC devices can affect optimal placement strategy, and issues of environmental impacts on sediment transport and large-scale flow should be examined. Numerical models of four flume-scale experiments were built using Sandia National Laboratories’ Environmental Fluid Dynamics Code (SNL-EFDC.) Model predictions were calibrated against measured velocities to estimate flow and turbine parameters. The velocity deficit was sensitive to αmd, the dimensionless Smagorinsky constant related to horizontal momentum diffusion, as well as the k-ε turbulence parameters ...


Velocity Distributions And Wall Pressures In A Scale Model Gated Box Culvert Control Structure, Alexander L. Evans 2015 University of Nebraska-Lincoln

Velocity Distributions And Wall Pressures In A Scale Model Gated Box Culvert Control Structure, Alexander L. Evans

Civil Engineering Theses, Dissertations, and Student Research

The South Florida Water Management District (SFWMD) manages a system of canals and structures that control the flow through several large storm water treatment areas (STA). The present project was initiated because of the partial failure of a three-barrel, gated box culvert structure that belongs to the system. The structure has a forebay with three sluice gates that control the flow into three 8 ft by 8 ft box culverts. Settling and partial failure of the culverts in the structure was presumably caused by piping of sediment through joints in pre-cast sections of culvert. It was hypothesized that both unsteady ...


A Framework For Estimating Labor Productivity Frontiers, Nirajan Mani 2015 University of Nebraska-Lincoln

A Framework For Estimating Labor Productivity Frontiers, Nirajan Mani

Construction Systems -- Dissertations & Theses

The efficiency of construction operations is typically determined by comparing actual versus historical productivity. This practice is accurate if historical data reflects optimal values. Otherwise, this comparison is a gauge of relative rather than absolute efficiency. Therefore, in order to determine absolute efficiency, one must compare actual versus optimal productivity. Optimal productivity is the highest sustainable productivity level achievable under “good management” and “typical field conditions,” while the productivity frontier is the theoretical maximum achievable under “perfect conditions.”

The productivity frontier is an abstraction useful in the estimation of optimal productivity of construction operations. This research contributes to the body ...


Thrust Of Utilizing Zycosoil Chemical Additive For Vg 10 Paving Mix, Innovative Research Publications IRP India, Tirthankar Dam, Vinal Khambhayta, Daxesh Makwana, Sanjay Jadav, C.B. Mishra 2015 Innovative Research Publications

Thrust Of Utilizing Zycosoil Chemical Additive For Vg 10 Paving Mix, Innovative Research Publications Irp India, Tirthankar Dam, Vinal Khambhayta, Daxesh Makwana, Sanjay Jadav, C.B. Mishra

Innovative Research Publications IRP India

Road divisions are the motors of development for economy, work and strengthening. Owing to increments in family unit wage, the requests for customized vehicles have additionally expanded. The blasting exchange in the business vehicle segment has changed the truck business in India, and without a doubt for the wellbeing to meet the requests of mechanical exercises putting more weight on VG 10 adaptable roads, the impact is noted all the more fundamentally with varieties in every day and regular temperatures adding to high anxieties influencing the adaptable asphalt specially in presence of moisture too. India is overflowing with a few ...


Rural Water Sector Policies And Reform – A Review, Innovative Research Publications IRP India, Astha Kumari, Mukul Kulshrestha 2015 Innovative Research Publications

Rural Water Sector Policies And Reform – A Review, Innovative Research Publications Irp India, Astha Kumari, Mukul Kulshrestha

Innovative Research Publications IRP India

This paper is an attempt to describe the major components of drinking water in rural sector and its tariff design. With an integrated approach towards improving Quality of Life (QoL) of rural people, ensuring equity and effective public participation as willingness to pay for water. The pressure of rural development programme has been made a frontal attack on poverty through pricing of drinking water. Therefore, water tariffs should be fixed to make people understand the value of water. Present paper describes various works done till date in this field of research


Characteristics Of Flow Meters With Sediment Laden Flow – A Review, Innovative Research Publications IRP India, Abhishek Kala, S.K Mittal, M.K. Choudhary 2015 Innovative Research Publications

Characteristics Of Flow Meters With Sediment Laden Flow – A Review, Innovative Research Publications Irp India, Abhishek Kala, S.K Mittal, M.K. Choudhary

Innovative Research Publications IRP India

Measurement of flow is an important aspect in the field of hydraulic engineering, both in case of open channel as well as pipe or conduits. In case of pipe conduits various flow meters are used for flow estimation; out of which venturimeter and orifice meter are most commonly used and conventional means. Pipes or conduit carrying sediment laden flow or slurry-water mixture is very common in most of the industries, sewage carrying system etc. Suitability of flow meters i.e. venturimeter and flow meter need to be analyzed for sediment laden flow. Due to the presence of slurry or sediments ...


Changes In Heavy Rainstorm Characteristics With Time And Temperature, Barry A. Palynchuk PhD, Yiping Guo PhD 2015 McMaster University

Changes In Heavy Rainstorm Characteristics With Time And Temperature, Barry A. Palynchuk Phd, Yiping Guo Phd

Barry A. Palynchuk PhD

The effects of climate change upon extreme rainfall is evaluated, based upon the identification of individual storms, and the changes in their statistical parameters and distributions. Those changes will be measured based upon historical time spans, and climatic temperature associated with the events. A brief review and comparison with other research is provided.


Changes In Heavy Rainstorm Characteristics With Time And Temperature - Presentation, Barry A. Palynchuk PhD 2015 McMaster University

Changes In Heavy Rainstorm Characteristics With Time And Temperature - Presentation, Barry A. Palynchuk Phd

Barry A. Palynchuk PhD

The effects of climate change upon extreme rainfall is evaluated, based upon the identification of individual storms, and the changes in their statistical parameters and distributions. Those changes will be measured based upon historical time spans, and climatic temperature associated with the events. A brief review and comparison with other research provided.


Best Practices For Winter Maintenance Roadway Deicer Applications In The State Of Nebraska, Tregan PD Albers II 2015 University of Nebraska-Lincoln

Best Practices For Winter Maintenance Roadway Deicer Applications In The State Of Nebraska, Tregan Pd Albers Ii

Civil Engineering Theses, Dissertations, and Student Research

The cost of deicing chemicals is a significant part of the Nebraska Department of Road’s winter maintenance budget. The objectives of this research are to review literature to determine current winter maintenance practices, analyze and present information gathered in a survey of winter maintenance professionals across Nebraska, and correlate this information with data obtained via MDSS (Maintenance Decision Support System) software to determine current practices being used in the state of Nebraska. Best practices for winter maintenance deicer applications for rural city and county officials in Nebraska are recommended. An explanation of the development of the survey that winter ...


Evaluating The Air Emissions From Solid Waste Refuse Trucks, Lauren D. Hauser 2015 University of Nebraska-Lincoln

Evaluating The Air Emissions From Solid Waste Refuse Trucks, Lauren D. Hauser

Civil Engineering Theses, Dissertations, and Student Research

The air emissions from solid waste refuse trucks is an issue that has not been widely studied, but is becoming an ever increasing issue. In the United States alone they have generated around 251 million tons of waste in 2012. This study in particular will collect data on 24 different refuse trucks (front-load, side-load, and roll-off, and diesel and compressed natural gas fuel) while on real-life routes in the Raleigh, North Carolina area. The collected data will then be aggregated and summarized based on the type of trucks. A regression analysis will also be done to determine the relationship between ...


Conceptual Development Of An Impact-Attenuation System For Intersecting Roadways, Joseph G. Putjenter 2015 University of Nebraska-Lincoln

Conceptual Development Of An Impact-Attenuation System For Intersecting Roadways, Joseph G. Putjenter

Mechanical (and Materials) Engineering -- Dissertations, Theses, and Student Research

Longitudinal barriers are commonly used to shield hazards, including stiff bridge rail ends and slopes. In some locations, a secondary roadway intersects the primary roadway within the guardrail’s length-of-need (LON). Some intersections have as little as 15 ft (4.6 m) between the intersection and beginning of the bridge railing, which require short-radius guardrail systems. No short-radius systems have been tested and approved to current impact safety standards for shielding hazards with these conditions.

Site conditions provided by the Nebraska Department of Roads were used to determine the constraints for a new safety treatment for intersecting roadways and include ...


Experimental And Numerical Study On Full-Scale Precast Steel Fibre-Reinforced Concrete Pipes, Nedal Mohamed 2015 The University of Western Ontario

Experimental And Numerical Study On Full-Scale Precast Steel Fibre-Reinforced Concrete Pipes, Nedal Mohamed

University of Western Ontario - Electronic Thesis and Dissertation Repository

Reinforced concrete (RC) pipes are widely used as open channels (non-pressurized pipes) for sewage and storm water conveyance. RC pipes have generally achieved a reliable long-term performance. Depending on multiple parameters (e.g. pipe diameter, pipe wall thickness, required strength, etc.) the pipe may have up to three welded reinforcement cages in order to resist anticipated loads. Each cage is an assembled unit of steel reinforcement consisting of circumferential and longitudinal bars or wires. The fabrication process of a steel cage reinforcement is time and labour consuming. Thus, eliminating the steel cage reinforcement will yield an overall reduction in the ...


Multi-Method Modeling Framework For Support Of Integrated Water Resources Management, Vladimir V. Nikolic 2015 The University of Western Ontario

Multi-Method Modeling Framework For Support Of Integrated Water Resources Management, Vladimir V. Nikolic

University of Western Ontario - Electronic Thesis and Dissertation Repository

The existing definition of integrated water resources management (IWRM) promotes a holistic approach to water resources management practice. The IWRM deals with planning, design and operation of complex systems in order to control the quantity, quality, temporal and spatial distribution of water with the main objective of meeting human and ecological needs and providing protection from water disasters. One of the main challenges of IWRM is development of tools for operational implementation of the concept and dynamic coupling of physical and socio-economic components of water resources systems. This research examines the role of simulation in IWRM practices, analyses the advantages ...


On The Influence Of Ionic Strength On Radium And Strontium Sorption To Sandy Loam Soils, Brian A. Powell, Todd Miller, Daniel I. Kaplan 2015 Clemson University

On The Influence Of Ionic Strength On Radium And Strontium Sorption To Sandy Loam Soils, Brian A. Powell, Todd Miller, Daniel I. Kaplan

Journal of the South Carolina Academy of Science

Models which can estimate environmental transport of radioactive contaminants in natural and engineered systems are required to 1) deploy effective remediation strategies for contaminated sites, 2) design waste repositories for future waste streams, and 3) ensure protection of human and environmental health in all cases. These models require accurate transport parameters in order to correctly predict how these contaminants will move in the subsurface. This work aimed to determine more accurately the distribution coefficients for radium and strontium sorption to Savannah River Site (SRS) soils. Radium and strontium sorption to the soils was found to be highly dependent upon ionic ...


Load Bearing Clip Angle Design, Cheng Yu, Mohamad Yousof, Mahsa Mahavian 2015 Missouri University of Science and Technology

Load Bearing Clip Angle Design, Cheng Yu, Mohamad Yousof, Mahsa Mahavian

AISI-Specifications for the Design of Cold-Formed Steel Structural Members

The material contained herein has been developed by researchers based on their research findings. The material has also been reviewed by the American Iron and Steel Institute Committee on Specifications for the Design of Cold-Formed Steel Structural Members. The Committee acknowledges and is grateful for the contributions of such researchers. The material herein is for general information only. The information in it should not be used without first securing competent advice with respect to its suitability for any given application. The publication of the information is not intended as a representation or warranty on the part of the American Iron ...


Integration Of A Prototype Wireless Communication System With Micro-Electromechanical Temperature And Humidity Sensor For Concrete Pavement Health Monitoring, Shuo Yang, Keyan Shen, Halil Ceylan, Sunghwan Kim, Daji Qiao, Kasthurirangan Gopalakrishnan 2015 Iowa State University

Integration Of A Prototype Wireless Communication System With Micro-Electromechanical Temperature And Humidity Sensor For Concrete Pavement Health Monitoring, Shuo Yang, Keyan Shen, Halil Ceylan, Sunghwan Kim, Daji Qiao, Kasthurirangan Gopalakrishnan

Civil, Construction and Environmental Engineering Publications and Papers

In recent years, structural health monitoring and management (SHMM) has become a popular approach and is considered essential for achieving well-performing, long-lasting, sustainable transportation infrastructure systems. Key requirements in ideal SHMM of road infrastructure include long-term, continuous, and real-time monitoring of pavement response and performance under various pavement geometry-materials-loading configurations and environmental conditions. With advancements in wireless technologies, integration of wireless communications into sensing device is considered an alternate and superior solution to existing time- and labor-intensive wired sensing systems in meeting the requirements of an ideal SHMM. This study explored the development and integration of a wireless communications sub-system ...


Geopolymer Concrete-Filled Pultruded Composite Beams – Concrete Mix Design And Application, Wahid Ferdous, Allan Manalo, Amar Khennane, Obada Kayali 2015 Centre of Excellence in Engineered Fibre Composites (CEEFC), University of Southern Queensland, Toowoomba, QLD 4350, Australia

Geopolymer Concrete-Filled Pultruded Composite Beams – Concrete Mix Design And Application, Wahid Ferdous, Allan Manalo, Amar Khennane, Obada Kayali

Wahid Ferdous

The limited research on the geopolymer concrete mix design for targeting a specific strength is identified an obstacle for their effective design and wide use. In this paper, a mix design procedure has been proposed for fly-ash based geopolymer concrete and its use as infill hybrid composite beam is investigated. Then, the structural performance of geopolymer concrete filled hybrid composite beam is investigated to determine their possible application in civil infrastructure. Firstly, a detailed procedure of mix design for fly-ash based geopolymer concrete is presented. Secondly, three hybrid beams filled with geopolymer concrete were prepared and tested in a four-point ...


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