Water Quality Monitoring In A Pilot Marine Integrated Aquaculture System, 2012 University of South Florida
Water Quality Monitoring In A Pilot Marine Integrated Aquaculture System, Alex W. Kruglick
USF Tampa Graduate Theses and Dissertations
Land based aquaculture systems are growing in popularity, and there is a drive to improve the efficiency of their energy and water systems for both economic and environmental benefit. Recirculating Aquaculture Systems (RAS) generally refer to systems that recycle their wastewater streams to be more or less a zero discharge facility. A more sustainable approach is emerging in the form of Integrated Aquaculture Systems (IAS) where maximum utility is realized from the various components so that fresh water use is reduced, water quality is improved, energy use is reduced, and new markets are created or fulfilled. Under a grant from …
Quantifying The Life Cycle Benefits Of Performance-Based Design In Sustainable Design, 2012 California Polytechnic State University, San Luis Obispo
Quantifying The Life Cycle Benefits Of Performance-Based Design In Sustainable Design, David Isaac Carmona
Master's Theses
ABSTRACT
Quantifying the Life Cycle Benefits of Performance-Based Design in Sustainable Design
David Carmona
For this thesis, a method is developed and tested for use with performance based design to quantify the sustainable and financial benefits of designing buildings to a structural performance level higher than Life-Safety. This paper starts to answer the question, “which would be a better investment: build structures to a performance level of Immediate Occupancy (IO) with the likelihood of less damage and downtime after an earthquake or continue to build to the building code’s implied minimum performance level of Life-Safety (LS)?”
An ASCE 7-05 designed …
Effects Of Adding Acid Plant Sulfur On Heap Leaching, 2012 University of Tennessee at Chattanooga
Effects Of Adding Acid Plant Sulfur On Heap Leaching, Jibin George
Masters Theses and Doctoral Dissertations
Mining industry is heavily invested in mining various precious metals from their natural ore deposits. Copper ore deposits are found across the world and heap leaching of copper has been implemented effectively for years. The ore is broken down to copper ions and elemental sulfur in the heap. Acid plants are used in mines to replenish the raffinate leaching the heaps which consists of sulfuric acid. Molten sulfur carried in rail cars to the acid plant is often accidentally spilled on the ground. The contaminated sulfur cannot be added to the acid plant and has been disposed of as hazardous …
Theory For Dynamic Longitudinal Dispersion In Fractures And Rivers With Poiseuille Flow, 2012 Missouri University of Science and Technology
Theory For Dynamic Longitudinal Dispersion In Fractures And Rivers With Poiseuille Flow, Lichun Wang, M. Bayani Cardenas, Wen Deng, Philip C. Bennett
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
We present a theory for dynamic longitudinal dispersion coefficient (D) for transport by Poiseuille flow, the foundation for models of many natural systems, such as in fractures or rivers. Our theory describes the mixing and spreading process from molecular diffusion, through anomalous transport, and until Taylor dispersion. D is a sixth order function of fracture aperture (b) or river width (W). The time (T) and length (L) scales that separate preasymptotic and asymptotic dispersive transport behavior are T = b2/(4D m), where Dm is the molecular diffusion …
Bs News March/April, 2012 Technological University Dublin
Real-Time Change And Damage Detection Of Landslides And Other Earth Movements Threatening Public Infrastructure, 2012 Oregon State University
Real-Time Change And Damage Detection Of Landslides And Other Earth Movements Threatening Public Infrastructure, Michael J. Olsen, Shawn Butcher, Evon P. Silvia
TREC Final Reports
Geologic hazards such as coastal erosion, landslides, seismic loading, etc. constantly threaten public highway construction and maintenance. Repeat surveys using terrestrial laser scanning (TLS, ground-based LiDAR) enable rapid 3D data acquisition to map, see, analyze, and understand the processes generating such problems. Previously, change detection and analysis between scan surveys was conducted during post-processing upon return to the office, instead of while collecting data in the field. Change detection in the field improves the effectiveness and efficiency of the field investigation. We have developed a new algorithm that quickly geo-references scans upon field acquisition and simultaneously performs change detection by …
Toward Reduction Of Model Uncertainty: Integration Of Bayesian Model Averaging And Data Assimilation, 2012 Portland State University
Toward Reduction Of Model Uncertainty: Integration Of Bayesian Model Averaging And Data Assimilation, Mark A. Parrish, Hamid Moradkhani, Caleb Matthew Dechant
Civil and Environmental Engineering Faculty Publications and Presentations
Multimodeling in hydrologic forecasting has proved to improve upon the systematic bias and general limitations of a single model. This is typically done by establishing a new model as a linear combination or a weighted average of several models with weights on the basis of individual model performance in previous time steps. The most commonly used multimodeling method, Bayesian model averaging (BMA), assumes a fixed probability distribution around individual models' forecast in establishing the prior and uses a calibration period to determine static weights for each individual model. More recent work has focused on a sequential Bayesian model selection technique …
Determination Of The Maximum Mgs Mounting Height -- Phase I Crash Testing, 2012 University of Nebraska-Lincoln
Determination Of The Maximum Mgs Mounting Height -- Phase I Crash Testing, Cale J. Stolle, Karla A. Lechtenberg, Ronald K. Faller, Robert W. Bielenberg, Scott Rosenbaugh, Dean L. Sicking, John D. Reid, Erin A. Johnson
Nebraska Department of Transportation: Research Reports
No abstract provided.
Beneficial Reuse Of Corrugated Paperboard In Civil Engineering Applications, 2012 California Polytechnic State University, San Luis Obispo
Beneficial Reuse Of Corrugated Paperboard In Civil Engineering Applications, Gregory M. Stone
Master's Theses
Abstract
Beneficial Reuse of Corrugated Paperboard in Civil Engineering Applications
Gregory Michael Stone
An investigation was conducted to explore the potential for reuse of corrugated paperboard. Corrugated paperboard represents a large fraction of the municipal solid waste generated and discarded in the United States. Alternative applications for reuse can provide a significant benefit by reducing the volume of waste being disposed and by reducing the use of raw materials. Four civil engineering applications were examined for potential beneficial reuse of corrugated paperboard: slurry trench construction, vertical drilling, directional drilling, and controlled low strength materials (CLSM).
For the purpose of this …
Bridge Design For Earthquake Fault Crossings – Synthesis Of Design Issues And Strategies, 2012 California Polytechnic State University, San Luis Obispo
Bridge Design For Earthquake Fault Crossings – Synthesis Of Design Issues And Strategies, Osmar Rodriguez
Master's Theses
This research evaluates the seismic demands for a three-span curved bridge crossing fault-rupture zones. Two approximate procedures which have been proved adequate for ordinary straight bridges crossing fault-rupture zones, i.e., the fault-rupture response spectrum analysis (FR-RSA) procedure and the fault-rupture linear static analysis (FR-LSA) procedure, were considered in this investigation. These two procedures estimate the seismic demands by superposing the peak values of quasi-static and dynamic bridge responses. The peak quasi-static response in both methods is computed by nonlinear static analysis of the bridge under the ground displacement offset associated with fault-rupture. In FR-RSA and FR-LSA, the peak dynamic responses …
Phase Ii Development Of A Non-Proprietary, Four-Cable, High Tension Median Barrier, 2012 University of Nebraska-Lincoln
Phase Ii Development Of A Non-Proprietary, Four-Cable, High Tension Median Barrier, Jennifer D. Schmidt, Dean L. Sicking, Ronald K. Faller, Karla A. Lechtenberg, Robert W. Bielenberg, Scott K. Rosenbaugh, John D. Reid
Nebraska Department of Transportation: Research Reports
No abstract provided.
Development Of The Oregon Traffic Safety Data Archive: Phases 1 And 2, 2012 Portland State University
Development Of The Oregon Traffic Safety Data Archive: Phases 1 And 2, Christopher M. Monsere, Myenwoo Lim, Chengxin Dai, Xiaowei Wu
Civil and Environmental Engineering Faculty Publications and Presentations
This report describes the preliminary work to develop the Oregon Traffic Safety Data Archive (OrTSDA). The mission of OrTSDA is to "build the knowledge base of traffic safety data in Oregon". The archive hopes to become a valuable traffic safety data resource with researchers, practitioners, and community supporters. As envisioned, the archive will provide current and historical versions of related data, encompass complete documentation, and contain an online interface to the variety of traffic safety related data. Working with partner state agencies, the archive contains reported motor vehicle crashes statewide, population data, estimates of vehicle miles traveled, traffic crime, and …
Global Monthly Water Scarcity: Blue Water Footprints Versus Blue Water Availability, 2012 University of Twente & Water Footprint Network
Global Monthly Water Scarcity: Blue Water Footprints Versus Blue Water Availability, Arjen Y. Hoekstra, Mesfin Mekonnen, Ashok K. Chapagain, Ruth E. Mathews, Brian D. Richter
Daugherty Water for Food Global Institute: Faculty Publications
Freshwater scarcity is a growing concern, placing considerable importance on the accuracy of indicators used to characterize and map water scarcity worldwide. We improve upon past efforts by using estimates of blue water footprints (consumptive use of ground- and surface water flows) rather than water withdrawals, accounting for the flows needed to sustain critical ecological functions and by considering monthly rather than annual values. We analyzed 405 river basins for the period 1996–2005. In 201 basins with 2.67 billion inhabitants there was severe water scarcity during at least one month of the year. The ecological and economic consequences of increasing …
The Water Footprint Of Humanity, 2012 University of Twente
The Water Footprint Of Humanity, Arjen Y. Hoekstra, Mesfin Mekonnen
Daugherty Water for Food Global Institute: Faculty Publications
This study quantifies and maps the water footprint (WF) of humanity at a high spatial resolution. It reports on consumptive use of rainwater (green WF) and ground and surface water (blue WF) and volumes of water polluted (gray WF). Water footprints are estimated per nation from both a production and consumption perspective. International virtual water flows are estimated based on trade in agricultural and industrial commodities. The global annual average WF in the period 1996–2005 was 9,087 Gm3 ∕y (74% green, 11% blue, 15% gray). Agricultural production contributes 92%. About one-fifth of the global WF relates to production for export. …
Impacts Of Changes In Land Use And Land Cover On Atmospheric Chemistry And Air Quality Over The 21st Century, 2012 Michigan Technological University
Impacts Of Changes In Land Use And Land Cover On Atmospheric Chemistry And Air Quality Over The 21st Century, S. Wu, L. J. Mickley, J. O. Kaplan, D. J. Jacob
Michigan Tech Publications
The effects of future land use and land cover change on the chemical composition of the atmosphere and air quality are largely unknown. To investigate the potential effects associated with future changes in vegetation driven by atmospheric CO 2 concentrations, climate, and anthropogenic land use over the 21st century, we performed a series of model experiments combining a general circulation model with a dynamic global vegetation model and an atmospheric chemical-transport model. Our results indicate that climate-and CO 2-induced changes in vegetation composition and density between 2100 and 2000 could lead to decreases in summer afternoon surface ozone of up …
The Influence Of Boreal Biomass Burning Emissions On The Distribution Of Tropospheric Ozone Over North America And The North Atlantic During 2010, 2012 The University of Edinburgh
The Influence Of Boreal Biomass Burning Emissions On The Distribution Of Tropospheric Ozone Over North America And The North Atlantic During 2010, M. Parrington, P. I. Palmer, D. K. Henze, D. W. Tarasick, E. J. Hyer, R. C. Owen, D. Helmig, C. Clerbaux, K. W. Bowman, M. N. Deeter, E. M. Barratt, P. F. Coheur, D. Hurtmans, Z. Jiang, M. George, J. R. Worden
Michigan Tech Publications
We have analysed the sensitivity of the tropospheric ozone distribution over North America and the North Atlantic to boreal biomass burning emissions during the summer of 2010 using the GEOS-Chem 3-D global tropospheric chemical transport model and observations from in situ and satellite instruments. We show that the model ozone distribution is consistent with observations from the Pico Mountain Observatory in the Azores, ozonesondes across Canada, and the Tropospheric Emission Spectrometer (TES) and Infrared Atmospheric Sounding Instrument (IASI) satellite instruments. Mean biases between the model and observed ozone mixing ratio in the free troposphere were less than 10 ppbv. We …
Comparative Procurement Methodology Analysis In Australia: A New Approach, 2012 Curtin University
Comparative Procurement Methodology Analysis In Australia: A New Approach, Peter Love, Jim Smith, Michael Regan
Michael Regan
A comparative review of procurement methods was undertaken for the purpose of objectively determining the relative strengths and weaknesses of the principal methods for the state procurement of economic and social infrastructures. The study concerned procurement alternatives commonly usedwith large or complex projects and available to government, including: o In-house provision using a state agency or works departmento Traditional procuremento Outsourcingo Build own operate and related forms of asset procuremento Alliance contractingo Public private partnerships. Around 90% of state procurement in the late 1980s was traditional which employs a comprehensive input specification, a lowest price tender selection process, separation of …
Procurement Method Selection In Practice: A Journey To Discover The Optimal, 2012 Curtin University
Procurement Method Selection In Practice: A Journey To Discover The Optimal, Peter Love, Jim Smith, Michael Regan
Michael Regan
Determining the optimal procurement approach for capital works is a challenging task considering the array of procurement methods available and criteria that must be assessed. To assist a public sector client with this complicated decision making process, a procurement method selection process was developed. A focus group compromising of key stakeholders involved with an educational capital works project used the developed approach to determine an appropriate solution for their needs. Overwhelmingly, participants supported the outcome albeit, a small minority who had limited wider exposure to alternative methods initially perceived their bastion (i.e. a default Traditional Lump Sum (TLS), to be …
Multiple Scattering Of Sh Waves By An Embedded Truncated Circular Cavity, 2012 Department of Harbor and River Engineering, National Taiwan Ocean University, Keelung, Taiwan.
Multiple Scattering Of Sh Waves By An Embedded Truncated Circular Cavity, Deng-How Tsaur, Kao-Hao Chang
Journal of Marine Science and Technology
The region-matching technique is implemented to derive a series solution to the SH-wave scattering problem of an embedded truncated circular cavity. An introduced auxiliary boundary partitions the whole analyzed region into two subregions, whose displacement fields are expressed as a superposition of appropriate wavefunctions. Taking advantage of the method of images, the zero-stress boundary condition on the horizontal ground surface is satisfied automatically. Suitable Graf’s addition formulas facilitate the enforcement of boundary conditions on the artificial interface and curved cavity surface for determining the expansion coefficients. Effects of several parameters on steady-state surface motions are discussed. Transient changes in underground …
Ultimate Load-Bearing Capacity Of Self-Anchored Suspension Bridges, 2012 Department of Civil Engineering, Tamkang University, 151 Ying-chuan Road, Tamsui, Taipei County 25137, Taiwan, R.O.C
Ultimate Load-Bearing Capacity Of Self-Anchored Suspension Bridges, Chin-Sheng Kao, Chang-Huan Kou, Wen-Liang Qiu, Jeng-Lin Tsai
Journal of Marine Science and Technology
This paper presents a method of reduced stiffness coupled with step increments to simulate the nonlinear problem that occurs when a material is in the elasto-plastic stage. A set of equations was developed and used to analyze the ultimate loadbearing capacity and the failure process of a self-anchored suspension bridge. Also investigated here were the effects on the load-bearing capacity due to variations in the strength and stiffness of the four substructures and due to broken hangers. The results showed that variations in the material strength and the structural stiffness of the substructures can lead to different degrees of influence …