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Assessment Of Policies For Innovative Financing In Infrastructure Systems, Ali Mostafavi, Dulcy Abraham, Charlene Sullivan 2014 Florida International University

Assessment Of Policies For Innovative Financing In Infrastructure Systems, Ali Mostafavi, Dulcy Abraham, Charlene Sullivan

Infrastructure System-of-Systems (I-SoS ) Research Group

Infrastructure systems are drivers of the economy in the nation. A dollar spent on infrastructure development yields roughly double the initial spending in ultimate economic output in the short term; and over a twenty-year period, and generalized ‘public investment’ produces an aggregated $3.21 of economic activity per $1.00 spent [1]. Thus, formulation of policies pertaining to infrastructure investment and development is of significance affecting the social and economic wellbeing of the nation. The aim of this policy brief is to evaluate innovative financing in infrastructure systems from two different perspectives: (1) through consideration of the current condition of ...


Study Of Nonlinear Vibration Of Euler-Bernoulli Beams By Using Analytical Approximate Techniques, Saman Bagheri, Ali Nikkar 2014 SelectedWorks

Study Of Nonlinear Vibration Of Euler-Bernoulli Beams By Using Analytical Approximate Techniques, Saman Bagheri, Ali Nikkar

Ali Nikkar

In this paper, nonlinear responses of a clamped-clamped buckled beam are investigated. Two efficient and easy mathematical techniques called He’s Variational Approach and Laplace Iteration Method are used to solve the governing differential equation of motion. To assess the accuracy of solutions, we compare the results with the Runge-Kutta 4th order. The results show that both methods can be easily extended to other nonlinear oscillations and it can be predicted that both methods can be found widely applicable in engineering and physics.


Response Of Large River Fishes To A Prolonged High Water Event In The Missouri River, Nebraska, Nicholas Paul Hogberg 2014 University of Nebraska - Lincoln

Response Of Large River Fishes To A Prolonged High Water Event In The Missouri River, Nebraska, Nicholas Paul Hogberg

Dissertations & Theses in Natural Resources

Regulation and modification of large rivers to accommodate human uses have been a root cause of freshwater biodiversity declines. The Missouri River is among the most drastically-altered large river systems in North America, with a series of mainstem impoundments in the upper watershed altering flow characteristics downstream, and channelization throughout the lower river homogenizing instream habitat and reducing off-channel habitat. Precipitation events during the winter and spring 2010-2011 caused flooding of the greatest magnitude and duration since reservoir completion. The large magnitude and long duration of this flood made it unlike any flood in recent history and provided a unique ...


Volatile Organic Compounds (Vocs) In Indoor Air: Emission From Consumer Products And The Use Of Plants For Air Sampling, Todd A. Wetzel 2014 Utah State University

Volatile Organic Compounds (Vocs) In Indoor Air: Emission From Consumer Products And The Use Of Plants For Air Sampling, Todd A. Wetzel

All Graduate Theses and Dissertations

Indoor air concentrations of volatile organic compounds (VOCs), including many with documented adverse health effects, vary widely but are generally higher than found outdoors. Volatile organic compounds can enter indoor environments via internal (e.g. paints, paint strippers, fuels, cleaning supplies, pesticides, building materials, adhesives) and external sources (e.g. vapor intrusion (VI) from contaminated soil and/or groundwater and ambient air from automobiles and industrial facilities). Since many consumer products contain volatile organic compounds (VOCs) that are also the focus of soil and groundwater cleanup projects, emissions of these VOCs can lead to false source identifications during VI investigations ...


Considerations For Hood Placement And Design Downstream From A Fixed-Cone Valve, Barry Jacob Prettyman 2014 Utah State University

Considerations For Hood Placement And Design Downstream From A Fixed-Cone Valve, Barry Jacob Prettyman

All Graduate Theses and Dissertations

In many hydroelectric projects there is a need to safely dissipate the energy associated with the elevation of the water surface. When the flow is not passing through the turbines, bypass valves are often used. A valve that is commonly used is the fixed-cone valve. Fixed-cone valves, also known as Howell-Bunger valves, are devices often used to safely reduce flow energy at dams with medium to high heads. The valve directs the outflow into a conical hollow jet, which requires a large area for energy dissipation. The flow is controlled by an adjustable sleeve, also known as the gate which ...


Evaluation Of Composting Of Municipal Solid Waste, J. Ryan Stebbins 2014 Utah State University

Evaluation Of Composting Of Municipal Solid Waste, J. Ryan Stebbins

All Graduate Theses and Dissertations

A field-scale commercial compost study was conducted to evaluate the impact of the Bio-Environmental Resource Recovery International (BERRI) Microbial Assisted Regeneration System (MARS) process, specifically its proprietary microbial inocula, on compost production of various agricultural waste and municipal solid waste (MSW) mixtures. Treated and control windrows were constructed to compare the MARS inoculum by quantity and quality of compost produced, organic stabilization time, and individual component sorting (i.e., green waste, wood, agriculture waste, food waste, MSW, C&D debris, and tires). Specific VOC and SVOC compounds, as well as a common pesticide, carbaryl, were added specifically for this study ...


A Junction Tree Based Reinforcement Learning Algorithm For Coordinated Multi Agent Systems To Solve Network Level Signal Control Problems, Feng Zhu, Husain M. Abdul Aziz, Zinwu Qian, Satish Ukkusuri 2014 Purdue University

A Junction Tree Based Reinforcement Learning Algorithm For Coordinated Multi Agent Systems To Solve Network Level Signal Control Problems, Feng Zhu, Husain M. Abdul Aziz, Zinwu Qian, Satish Ukkusuri

Purdue Road School

No abstract provided.


A Meta-Heuristic Approach To Reposition Bicycles In A Public Bicycle Sharing System, Binh Luong, Pulkit Parikh, Satish Ukkusuri 2014 Purdue University

A Meta-Heuristic Approach To Reposition Bicycles In A Public Bicycle Sharing System, Binh Luong, Pulkit Parikh, Satish Ukkusuri

Purdue Road School

No abstract provided.


Concrete Conductivity: Effects Of Temperature, Saturation And Air Content, Parth Panchmatia, Jan Olek, Nancy Whiting, Mike Byers, Tommy Nantung 2014 Purdue University

Concrete Conductivity: Effects Of Temperature, Saturation And Air Content, Parth Panchmatia, Jan Olek, Nancy Whiting, Mike Byers, Tommy Nantung

Purdue Road School

No abstract provided.


Examining The Impact Of Pavement Rehabilitation Trigger Values And Annual Rehabilitation Funding On The Long-Term Network-Level Pavement Condition: A Case Study With The Indiana State Urban Road Network, Menna Noureldin, Jon D. Fricker, Kumares C. Sinha 2014 Purdue University

Examining The Impact Of Pavement Rehabilitation Trigger Values And Annual Rehabilitation Funding On The Long-Term Network-Level Pavement Condition: A Case Study With The Indiana State Urban Road Network, Menna Noureldin, Jon D. Fricker, Kumares C. Sinha

Purdue Road School

Management of highway assets, including pavements, is immensely challenging in an era of uncertain funding for transportation agencies and higher service expectations from the public. Furthermore, the maintenance of pavement assets in good serviceable condition is one of the most cost-intensive operations for a highway agency.

Between 1996 and 2008, the Indiana DOT spending on improvement of pavement assets fluctuated between 35% and 50% of its asset management budget annually (Everett2012). Therefore, pavement managers are constantly exploring strategies to fulfill their mission of maintaining roads in good condition with the minimumbudget. Strategies may include examining the effectiveness of individual pavement ...


Winter Storm Interstate Travel Times (January 5, 2014 Storm), Michelle Mekker, Darcy M. Bullock 2014 Purdue University

Winter Storm Interstate Travel Times (January 5, 2014 Storm), Michelle Mekker, Darcy M. Bullock

Purdue Road School

No abstract provided.


Mobile Tools For Ltap Centers, Indiana LTAP 2014 Purdue University

Mobile Tools For Ltap Centers, Indiana Ltap

Purdue Road School

No abstract provided.


I-65/I-70 South Split Pavement Reconstruction: Documentation & Quantitative Analysis Using Time Lapse Photography, Steven Lavrenz, Teresa Morris, Darcy M. Bullock 2014 Purdue University

I-65/I-70 South Split Pavement Reconstruction: Documentation & Quantitative Analysis Using Time Lapse Photography, Steven Lavrenz, Teresa Morris, Darcy M. Bullock

Purdue Road School

No abstract provided.


Graphical Performance Measures For Practitioners To Triage Split Failure Trouble Calls, Richard S. Freije, Alexander M. Hainen, Amanda L. Stevens, Howell Li, W Benjamin Smith, Hayley Summers, Christopher M. Day, James R. Sturdevant, Darcy M. Bullock 2014 Purdue University

Graphical Performance Measures For Practitioners To Triage Split Failure Trouble Calls, Richard S. Freije, Alexander M. Hainen, Amanda L. Stevens, Howell Li, W Benjamin Smith, Hayley Summers, Christopher M. Day, James R. Sturdevant, Darcy M. Bullock

Purdue Road School

Detector occupancy is commonly used to measure traffic signal performance. Despite improvements in controller computational power, there have been relatively few innovations in occupancy-based performance measures or integration with other data. This paper introduces and demonstrates the use of graphical performance measures based on detector occupancy ratios to verify potential split failures and other signal timing shortcomings reported to practitioners by the public. The proposed performance measures combine detector occupancy during the green phase, detector occupancy during the first five seconds of the red phase, and phase termination cause (gap out or force off). These are summarized by time of ...


"Elemental Decomposition And Multi-Criteria Method For Valuing Transportation Infrastructure Elemental Decomposition And Multi-Criteria Method For Valuing Transportation Infrastructure ", Michelle S. Dojutrek, Samuel Labi 2014 Purdue University

"Elemental Decomposition And Multi-Criteria Method For Valuing Transportation Infrastructure Elemental Decomposition And Multi-Criteria Method For Valuing Transportation Infrastructure ", Michelle S. Dojutrek, Samuel Labi

Purdue Road School

No abstract provided.


An Investigation Of Diagnostic And Treatment Methods For Patients Suffering From Arachnoid Cysts, Helene Marie Rynczak, John F. Taylor 2014 University of Tennessee, Knoxville

An Investigation Of Diagnostic And Treatment Methods For Patients Suffering From Arachnoid Cysts, Helene Marie Rynczak, John F. Taylor

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Arachnoid cysts are congenital, fluid-filled lesions located in the head. While most are asymptomatic, arachnoid cysts can cause debilitating symptoms in patients, including headaches, developmental delay, seizures, and physical disabilities. Current diagnostic and treatment methods are based on a trial and error approach with limited options available to patients and doctors. This research aims to identify areas for the development of innovative diagnostic and treatment methods to improve the quality of life for patients suffering from symptomatic arachnoid cysts.

Our research project began with the investigation of arachnoid cyst prevalence, correlation of symptoms with cyst location and the effectiveness of ...


Development Of Probabilistic Corrosion Growth Models With Applications In Integrity Management Of Pipelines, Shenwei Zhang 2014 Western University

Development Of Probabilistic Corrosion Growth Models With Applications In Integrity Management Of Pipelines, Shenwei Zhang

University of Western Ontario - Electronic Thesis and Dissertation Repository

Metal-loss corrosion is a major threat to the structural integrity and safe operation of underground oil and gas pipelines worldwide. The reliability-based corrosion management program has been increasingly used in the pipeline industry, which typically includes three tasks, namely periodic high-resolution inline inspections (ILIs) to detect and size corrosion defects on a given pipeline, engineering critical assessment of the corrosion defects reported by the inspection tool and mitigation of defects. This study addresses the core involved in the reliability-based corrosion management program. First, the stochastic process in conjunction with the hierarchical Bayesian methodology is used to characterize the growth of ...


Mechanism Of Dissolution Of High Valence Lead Oxides In Water Under Depleting Chlorine Conditions, Daoping Guo 2014 Western University

Mechanism Of Dissolution Of High Valence Lead Oxides In Water Under Depleting Chlorine Conditions, Daoping Guo

University of Western Ontario - Electronic Thesis and Dissertation Repository

Destabilization of lead corrosion scales present in plumbing materials used in water distribution systems results in elevated lead concentrations in drinking water. Lead release caused by changes in water chemistry (e.g., redox conditions) is often due to the destabilization of lead carbonate and oxide solid phases. Although prior studies have examined the effects of varying water chemistry on the stability of β-PbO2 (plattnerite), β-PbO2 stability under depleting chlorine conditions is poorly understood. In addition little is known regarding the mechanisms by which Pb3O4 (minium) dissolves under drinking water conditions. In this thesis, long-term batch ...


Simulating Chemical Reactions Of Glass Powder In Cement Using Silica, Calcium Hydroxide And Sodium Hydroxide, Sarah Young 2014 McMaster University

Simulating Chemical Reactions Of Glass Powder In Cement Using Silica, Calcium Hydroxide And Sodium Hydroxide, Sarah Young

Open Access Dissertations and Theses

The use of supplementary cementitious materials (SCM) decreases the environmental impact of the cement industry. SCMs are commercial by-products that possess pozzolanic properties. Recycled glass powder, classified as a SCM, when added as a cement replacement reacts with the available lime in the cement to form calcium silicate hydrate (C-S-H) products. In contrast with other SCMs, glass is siliceous and thus the reaction can also cause alkali silica reaction (ASR) which causes expansion and cracking. This study was completed in order to characterize the chemical reactions and their rate using a simplified system that mimics glass particles in hardened cement ...


Analyzing The Effects Of Ionic Strength, Particle Size And Particle Characteristics On The Transport Mechanisms Of Colloids In Single, Saturated Dolomite Fractures., Graham Seggewiss 2014 McMaster University

Analyzing The Effects Of Ionic Strength, Particle Size And Particle Characteristics On The Transport Mechanisms Of Colloids In Single, Saturated Dolomite Fractures., Graham Seggewiss

Open Access Dissertations and Theses

A series of experiments were carried out to gain a better understanding of the mechanisms governing the transport of biological and non-biological particles through single, saturated dolomite fractures at the laboratory scale. Fracture apertures and general roughness were characterized using hydraulic and conservative solute tracer experiments.

The effects of particle size, surface characteristics and ionic strength of carrying solution were all evaluated. Particulate material studied included MS2, E. coli and two sizes of carboxylated microspheres. To elucidate the effect of ionic strength on particulate transport, the ionic strength of the carrying solution was altered during each experiment. All particulate experiments ...


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