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Purdue Ect Report - Fourth Quarter 2016, Purdue ECT Team 2017 Construction Engineering & Management, Purdue University

Purdue Ect Report - Fourth Quarter 2016, Purdue Ect Team

ECT Fact Sheets

Fourth Quarter 2016

This is a quarterly report from the Purdue ECT.


Bicp Global Bim Study - Lessons For Ireland’S Bim Programme, Barry McAuley, Alan Hore, Roger West 2017 Dublin Institute of Technology

Bicp Global Bim Study - Lessons For Ireland’S Bim Programme, Barry Mcauley, Alan Hore, Roger West

Reports

The Construction IT Alliance (CitA) has been promoting the benefits of digitisation in the construction and engineering industry in Ireland since its formation back in 2002. Whilst the Alliance has always strived to ensure that its members are exposed to a wide spectrum of contemporary digital tools and processes, the concept of Building Information Modelling (BIM) has dominated the focus of its activities over the past five years.

BIM can be described as a digital tool that facilitates everybody to better understand a building or structure through the use of a digital model which draws on a range of data ...


Road Zipper™, Purdue ECT Team 2017 Construction Engineering & Management, Purdue University

Road Zipper™, Purdue Ect Team

ECT Fact Sheets

Construction work zones are growing in number around the world. The natural aging of existing roadway infrastructure ensures that more and more maintenance and rehabilitation will be required. Work zones, by their very definition, create two major problems that must be addressed in some way: safety and mobility. In the United States, highway work zones are responsible for almost 25% of all non-recurring congestion and 10% of overall congestion. Vehicle accidents are more common in work zones, and traffic congestion through work zones on urban arterials and freeways is often considered to be “unavoidable." To address these issues, ROAD ZIPPER ...


Center Pivot Irrigation Handbook (Ec3017), Derrel Martin, William Kranz, Tyler Smith, Suat Irmak, Charles Burr, Ron Yoder 2017 University of Nebraska-Lincoln

Center Pivot Irrigation Handbook (Ec3017), Derrel Martin, William Kranz, Tyler Smith, Suat Irmak, Charles Burr, Ron Yoder

Biological Systems Engineering: Papers and Publications

Center pivot irrigation has been the most rapidly expanding form of irrigation in the Central Great Plains and across the United States. The amount of land irrigated with sprinkler, gravity and drip or trickle systems was determined for all states in the USA in the Farm and Ranch Irrigation Survey1 by the USDA in 2012. Results of the survey for the Great Plains States shows that approximately 85% of the land in Nebraska is irrigated with center pivots and that very little land was irrigated with drip systems in 2012 (Figure 1). The percentage of land irrigated with sprinklers in ...


Environmental Implications Of Nanotechnology, Boris Lau, Joann Mariie Rodríguez 2017 University of Massachusetts Amherst

Environmental Implications Of Nanotechnology, Boris Lau, Joann Mariie Rodríguez

Science and Engineering Saturday Seminars

No abstract provided.


Air Injection As A Scour Countermeasure At Bridge Piers, Ravi Teja Reddy Tippireddy 2017 Michigan Technological University

Air Injection As A Scour Countermeasure At Bridge Piers, Ravi Teja Reddy Tippireddy

Dissertations, Master's Theses and Master's Reports

Local scour is a major cause of concern for the stability of bridge piers and the safety of the public using the bridges. Structural countermeasures and flow-altering devices have been developed to deal with local scour. Many armoring structural countermeasures are very effective and efficient in clear water conditions but are susceptible to moving bed forms and leaching. The flow-altering devices are effective in both clear water conditions and moving bed forms, but are prone to clogging, less efficient in changing flow direction, etc. This study aims to reduce the local scour by injecting air in order to reduce the ...


Compensatory Response Of Fathead Minnow Larvae Following A Pulsed In-Situ Exposure To A Seasonal Agricultural Runoff Event, Jonathan M. Ali, John Sangster, Daniel D. Snow, Shannon L. Bartelt-Hunt, Alan S. Kolok 2017 University of Nebraska Medical Center

Compensatory Response Of Fathead Minnow Larvae Following A Pulsed In-Situ Exposure To A Seasonal Agricultural Runoff Event, Jonathan M. Ali, John Sangster, Daniel D. Snow, Shannon L. Bartelt-Hunt, Alan S. Kolok

Faculty Publications from The Water Center

Agriculturally-dominated waterways such as those found throughout the Midwestern United States often experience seasonal pulses of agrichemical contaminants which pose a potential hazard to aquatic organisms at varying life stages. The objective of this study was to characterize the developmental plasticity of fathead minnow larvae in a natural environment subject to a seasonal episodic perturbation in the form of a complex mixture of agricultural stressors. Fathead minnow larvae were maintained at the Elkhorn River Research Station for a 28-d in situ exposure to an agrichemical pulse event.Minnow larvae were sampled after 14 and 28 days to characterize developmental plasticity ...


In-Situ Observation And Transport Modelling Of Arsenic In Gangetic Plain, India, Pankaj Kumar Gupta, Pranjay Joshi, Jahangeer 2017 Indian Institute of Technology Roorkee

In-Situ Observation And Transport Modelling Of Arsenic In Gangetic Plain, India, Pankaj Kumar Gupta, Pranjay Joshi, Jahangeer

Water for Food Faculty Publications

The focus of this study is to investigate the arsenic movement and impacts on the residual concentrations on groundwater pollution load. The Gangetic plain area in the Ballia, Uttar Pradesh is selected as study area, which is also reported to extreme arsenic pollution in soil-water system. A modelling approach is developed to assess the arsenic flux in partially saturated zone using data of soil texture, soil hydraulic properties and stratigraphy. Soil type, slope, and land-use cover is considered for estimating the transient flux at the top boundary from daily precipitation and evapotranspiration data of the study area. Solute transport in ...


Aquacrop-Os: An Open Source Version Of Fao’S Crop Water Productivity Model, T. Foster, N. Brozovic, A. P. Butler, C. M. U. Neale, D. Raes, P. Steduto, E. Fereres, T. C. Hsiao 2017 University of Manchester

Aquacrop-Os: An Open Source Version Of Fao’S Crop Water Productivity Model, T. Foster, N. Brozovic, A. P. Butler, C. M. U. Neale, D. Raes, P. Steduto, E. Fereres, T. C. Hsiao

Water for Food Faculty Publications

Crop simulation models are valuable tools for quantifying crop yield response to water, and for devising strategies to improve agricultural water management. However, applicability of the majority of crop models is limited greatly by a failure to provide open-access to model source code. In this study, we present an open-source version of the FAO AquaCrop model, which simulates efficiently water-limited crop production across diverse environmental and agronomic conditions. Our model, called AquaCrop-OpenSource (AquaCrop-OS), can be run in multiple programming languages and operating systems. Support for parallel execution reduces significantly simulation times when applying the model in large geospatial frameworks, for ...


Segment-Based Reliability Assessment For Water Distribution Networks, Erika Hernandez Hernandez 2017 University of Kentucky

Segment-Based Reliability Assessment For Water Distribution Networks, Erika Hernandez Hernandez

Theses and Dissertations--Civil Engineering

In recent years, water utilities have placed a greater emphasis on the reliability and resilience of their water distribution networks. This focus has increased due to the continuing aging of such infrastructure and the potential threat of natural or man-made disruptions. As a result, water utilities continue to look for ways to evaluate the resiliency of their systems with a goal of identifying critical elements that need to be reinforced or replaced. The simulation of pipe breaks in water reliability studies is traditionally modeled as the loss of a single pipe element. This assumes that each pipe has an isolation ...


High Performance Techniques Applied In Partial Differential Equations Library, Shilei Lin 2017 College of Saint Benedict/Saint John's University

High Performance Techniques Applied In Partial Differential Equations Library, Shilei Lin

All College Thesis Program, 2016-present

This thesis explores various Trilinos packages to determine a method for updating the deal.ii library, which specializes in solving partial differential equations by finite element methods. It begins with introducing related concepts and general goals, followed by exploring computational and mathematical methods which are analytical solutions of one-dimensional Boussinesq equations and developing newer prototypes for solvers in deal.ii based on Trilinos packages. After demonstrating the methods, it indicates the reducing solving time in newer prototypes. Based on results from the prototype, similar methods are applied to update the deal.ii library. In the end, a testing program is ...


A Geospatial Variable Rate Irrigation Control Scenario Evaluation Methodology Based On Mining Root Zone Available Water Capacity, K. A. Miller, Joe Luck, Derek M. Heeren, T. Lo, Derrel Martin, J. B. Barker 2017 Hastings Utilities, Hastings, NE

A Geospatial Variable Rate Irrigation Control Scenario Evaluation Methodology Based On Mining Root Zone Available Water Capacity, K. A. Miller, Joe Luck, Derek M. Heeren, T. Lo, Derrel Martin, J. B. Barker

Biological Systems Engineering: Papers and Publications

Increasing concern for sustainable water use has the agriculture industry working toward higher efficiency in use of irrigation water. Recent advancements have improved the capabilities of center pivot irrigation systems to vary water application depths across the field, a technology known as variable rate irrigation (VRI). The goal of this study was to provide a geospatial method for potential VRI technology adopters to evaluate control scenarios and potential water savings using freely available datasets. Root zone available water capacity (R) was estimated spatially across two case study fields using the Natural Resources Conservation Service Gridded Soil Survey Geographic Database. The ...


Methods For Incorporating Ecological Impacts With Climate Uncertainty To Support Robust Flood Management Decision-Making, Caitlin M. Spence 2017 University of Massachusetts - Amherst

Methods For Incorporating Ecological Impacts With Climate Uncertainty To Support Robust Flood Management Decision-Making, Caitlin M. Spence

Doctoral Dissertations

Modern and historic flood risk management involves accommodating multiple sources of sources of uncertainty and potential impacts across a broad range of interrelated sectors. Sources of uncertainty that affect planning include internal climate variability, anthropogenic changes such as land use and system performance expectations, and more recently changes in climatology that affect the resources supporting the system. Flood management systems potentially impact human settlements within and beyond the systems’ scope of planning, local weather patterns, and associated ecological systems. Federal guidelines across nations have called for greater consideration of uncertainty and impacts of water resources planning projects, but methods for ...


Flow And Transport From A Stream To A Well In An Unconfined Aquifer, Cynthia Louise Maroney 2017 Iowa State University

Flow And Transport From A Stream To A Well In An Unconfined Aquifer, Cynthia Louise Maroney

Graduate Theses and Dissertations

Flow, stream depletion rate (SDR), and transport are evaluated with three analytical models for wells installed in a semi-infinite, homogeneous, anisotropic, unconfined aquifer near a fully penetrating stream with a streambed with reduced conductivity. The first model, presented in Maroney and Rehmann (2017), involves re-evaluating the calculations of Huang et al. (2012) for the SDR of a radial collector well. The present solution for SDR has a single integral that requires numerical evaluation, while the previous model has five. Analytical results show that at steady state the flow through the streambed equals the pumping rate of the well. That is ...


River And Stream Power Assessment Report Including Culvert And Bridge Vulnerability Analysis: Deerfield River Basin, Massachusetts And Vermont, James G. MacBroom, Roy Schiff, Jessica Louisos 2017 Milone & MacBroom, Inc.

River And Stream Power Assessment Report Including Culvert And Bridge Vulnerability Analysis: Deerfield River Basin, Massachusetts And Vermont, James G. Macbroom, Roy Schiff, Jessica Louisos

Water Reports

This geomorphic assessment of Deerfield River in western Massachusetts and southern Vermont has been prepared by Milone & MacBroom, Inc. (MMI) on behalf of the University of Massachusetts as part of its "Farms, Floods, and FGM" project, funded by the United States Department of Agriculture – National Institute of Food and Agriculture National Integrated Water Quality Program(USDA – NIFA NIWQP) program. This project is a broad-based geomorphic assessment of the Deerfield River and its adjacent riparian corridor to define its characteristics, processes, and management issues. The river channel is used extensively for hydroelectric power generation and recreation, with agricultural land uses on ...


A New Data Set For Assessing The Cold Content Of The Rocky Mountain West Snowpack, Jeffrey Schmidt 2017 University of Colorado, Boulder

A New Data Set For Assessing The Cold Content Of The Rocky Mountain West Snowpack, Jeffrey Schmidt

Undergraduate Honors Theses

Abstract

Snowpack cold content (CCsnow) is the energy required to bring a snowpack to an isothermal temperature of 0.0°C. CCsnow is a snow characteristic that integrates the response of a snowpack to components of the snow-cover energy balance. An improved understanding of the spatiotemporal variability of CCsnow may provide insight into dynamics and sensitivity of the snowpack to climate change. In this study, snowpit observations of snow water equivalent (SWE), snow temperature (Tsnow) and snow density (⍴snow) from the United States Geologic Survey Rocky Mountain Snowpack Chemistry Program (USGS RMS) were used to evaluate ...


Estimating Longitudinal Dispersion Coefficients In Natural Channels, Yuqi Song 2017 Iowa State University

Estimating Longitudinal Dispersion Coefficients In Natural Channels, Yuqi Song

Graduate Theses and Dissertations

A new empirical formula is developed for estimating the longitudinal dispersion coefficient. Velocity profiles are computed from the momentum equation as presented by Shiono and Knight (1991), and the dispersion coefficient is computed from the velocity profiles using the theory of shear dispersion (Taylor 1953, Fischer et al. 1979). To simplify the application, results of the numerical integration are expressed in terms of the aspect ratio of the channel, the friction factor, the dimensionless eddy viscosity, and the secondary flow coefficient using multiple regression. For laboratory data, 83.3% of the empirical estimates from the initial formula fall within 50 ...


Impact Of Subsurface Drainage On Water Yield For Typical Soil And Weather In Eastern South Dakota, Govinda Karki 2017 South Dakota State University

Impact Of Subsurface Drainage On Water Yield For Typical Soil And Weather In Eastern South Dakota, Govinda Karki

Electronic Theses and Dissertations

Subsurface drainage in agricultural land changes the field water balance by providing an alternate pathway for subsurface water. Determining the effects of subsurface drainage on downstream hydrology requires quantifying the components of the water balance. A number of studies have looked at the hydrological impacts of subsurface drainage. However, the effects are complex and difficult to generalize. The complex interaction involves the interrelation among variables such as soil type and properties, climate (rainfall and evapotranspiration), and drainage design configuration (drainage intensity and drainage coefficient), which all are local in nature. Additionally, most studies have been conducted in humid climates, whereas ...


Improved Predictions Of Contaminant Transport In Rivers, Rusen Sinir 2017 Iowa State University

Improved Predictions Of Contaminant Transport In Rivers, Rusen Sinir

Graduate Theses and Dissertations

To improve predictions of contaminant transport in rivers, two analytical models and one empirical model were evaluated. Analytical solutions of the model of Reichert and Wanner (1991), which represents mixing in the advective zone by dividing the channel into a flowing zone and a stagnant zone, were developed for two cases: a spill in the stagnant zone and a maintained injection in the flowing zone. Compared to the case of a flowing zone spill solved by Schmalle and Rehmann (2014), contaminant clouds for a stagnant zone spill travel more slowly, spread more, and shift from positive to negative skewness. These ...


A Demonstration Study Of Drainage Water Management In Eastern South Dakota, Ashik Sahani 2017 South Dakota State University

A Demonstration Study Of Drainage Water Management In Eastern South Dakota, Ashik Sahani

Electronic Theses and Dissertations

Subsurface drainage is a common water management practice for improving crop production in poorly drained soils; however, the practice is associated with several environmental concerns such as nutrient losses to downstream surface waters. These environmental concerns from subsurface drainage have prompted interest in drainage water management strategies such as controlled drainage. This study assessed the agronomic and environmental impacts of drainage water management in eastern South Dakota by using two demonstration plots for controlled and conventional drainage. Drain flow, nitrate and dissolved phosphorous concentration in drain water, shallow groundwater, crop yield, residual soil nitrate, soil moisture and temperature, soil penetration ...


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