Digital Commons Network^™

Effectiveness Of Softening Agents For Enhancing Properties Of Asphalt Mixes With High Rap Contents, Zahid Hossain, Ashraf Elsayed, Sumon Roy

Data

A high percentage of reclaimed asphalt pavement (RAP) in new asphalt concrete can lead to developing premature failure of asphalt pavements due to fatigue or low-temperature cracking. The use of softening agents in asphalt binders can resolve these problems. The aim of this study is to evaluate the effectiveness of softening agents for enhancing the properties of asphalt mixes with high RAP contents. Two waste products, namely, waste cooking oil (WCO), and engine bottom oil (EBO) along with a commercially produced rejuvenator were investigated in this study. The following three types of Performance Grade (PG) binders, each collected from two …

Feasibility Assessment Of Warm Mix Asphalt In Arkansas, Zahid Hossain, Ashraf Elsayed, Mohammad Najmush Sakib Oyan

Data

The future of Warm Mix Asphalt (WMA) technologies is promising in the U.S. However, the Arkansas Department of Transportation (ARDOT) does not have any specific guidelines to implement them in the field. This research aims to provide necessary baseline data for WMA as a proof of concept. In this study, three ARDOT approved Performance Grade (PG) binders namely PG 64-22, PG 70-22, and PG 76-22 were investigated. Each of these binders was obtained from two different sources. They were modified by varying doses of four selected additives: Sasobit®, Advera®, Evotherm®, and Rediset®. Additionally, four different types of aggregates (sandstone, limestone, …

Development Of Decision Trees For The Selection Of Pavement Maintenance And Rehabilitation Activities In South-Central United States, Momen Mousa, Marwa Hassan, Daniel E. Game

Data

Over time, new pavements deteriorate under the combined effects of traffic loading and the environment, no matter how well-designed or constructed. In general, maintenance and rehabilitation activities are employed to slow down or reset the rate of pavement deterioration. Cement-Stabilized Full Depth Reclamation (CSFDR) is a common rehabilitation treatment used by transportation agencies, specifically in Louisiana. Likewise, Ultra-Thin overlay (UTO) is a pavement maintenance treatment that has increased in popularity in recent years in Region 6. Yet, several gaps exist in the literature regarding the long-term field performance and cost-effectiveness of these two treatments especially in hot and humid climates. …

Network Analysis To Identify Critical Links For Relief Activities During Extreme Weather Events, Kate Kyung Hyun, Stephen P. Mattingly Ph.D, Mehrdad Arabi

Data

As one of the principal lifeline systems, transportation networks are crucial for evacuation and delivering essential resources and services during the response and recovery phases of extreme weather events and must remain intact to enhance regional resiliency. The conventional evaluation measures that estimate the vulnerability or criticality of road network based on travel time or link volumes do not capture the community impacts due to disruptions. This study seeks to develop a framework to evaluate road network infrastructure criticality during extreme weather events by introducing measures that evaluate the vulnerability of roads users, rather than the physical aspects of link …

Study On Hybrid Model Combining Super Learner And Physics-Based Models For Shm In Bridges Using Low-Cost Bwim, Suyun Ham Ph.D, Shih-Ho Chao, Kyeong Rok Ryu, Yin Chao Yu, Dafnik Saril Kumar David

Data

The main objective of this project is to study and develop hybrid models of BWIM physics-based models incorporates with SHM inspection used by artificial intelligence (AI) techniques to predict structural damage. This study presents a comprehensive assessment of FE simulations leveraging contact method verified by vehicle-bridge interaction(VBI) theory and uses machine learning (ML) techniques to identify and predict structural damages from the structural response automatically. Bridges are a fundamental part of infrastructure management. The main challenge that we face is the aging of these transportation infrastructures without a tool to perform accurate structural assessments in a real-time manner. Unfortunately, this …

Resilient 3d-Printed Infrastructure With Engineered Cementitious Composites (Ecc), Maryam Hojati

Data

Conventional construction of reinforced concrete structures is slow, labor-intensive, and expensive. 3D printing holds great potential to assist engineers and architects in constructing fast and economical yet complex representational infrastructures. One of the most significant barriers to the broader adoption of concrete 3D printing in civil infrastructure is the difficulty of providing printed structural components with reinforcement to achieve sound structural performance under different loading conditions. Hence, it is essential to design concrete that can be utilized as a rebar-free material by considering strength and ductility. Recently, the development of Engineered Cementitious Composites (ECC) has neared the possibility to achieve …

An Automated System For Inspecting Rock Faces And Detecting Potential Rock Falls Using Machine Learning, John Stormont, Fernando Moreu, Amir Bagherieh, Roya Nasimi, Solomon Atcitty

Data

Rockfall is a hazard in mountainous areas threatening infrastructure and human lives. Rockfall hazards are often mitigated by manual inspections using pry bars. The inspector must access the rock face, hit the rock surface, detect, and remove the loose rocks. This method is very labor demanding, unsafe, and challenging. This research presents a method that automatize the inspection of rock blocks that are prone to rockfall events. A robot is developed to replace the manual hammer tap process and collect the sound data remotely; subsequently, the sound signal is used to identify different types of the discontinuity in rocks in …

Resource Guide For State Dot’S Maintenance Equipment Fleet Management Decisions, Yongwei Shan, Samir Ahmed, Lei Qiao

Data

This research created a guide for state Departments of Transportation fleet management on utilizing equipment fleet management system data to make informed fleet management decisions. The research team took the historical equipment fleet data from the Oklahoma Department of Transportation and developed workflows, algorithms, and examples to demonstrate the use of historical equipment data for equipment decisions. Specifically, the research team demonstrated 1) the use of life cycle analysis and dynamic programming models for equipment replacement decisions; 2) developed algorithms to calculate equipment rental rates that can be used by the Department to forecast and allocate equipment operational budget among …

Preventing Struck-By Hazards: Defying Risk-Habituation Via Virtual Accident Simulation, Changbum Ahn

Data

Repeated exposure to struck-by hazards in road work zones generates workers’ habituation to risks related to those hazards, a key contributor to accidents in road work zones. Thus, analyzing the development of risk habituation and providing proper intervention are crucial to preventing accidents in road work zones. In this context, this study employs a virtual reality (VR) environment as a behavioral intervention tool to investigate its effect on mitigating a decline in workers’ vigilance with habituation to hazards in workplaces. A virtual environment that simulates a road maintenance task was developed and used to repeatedly expose subjects to struck-by hazards …

Bridge Cracks Monitoring: Detection, Measurement, And Comparison Using Augmented Reality, Fernando Moreu, Kaveh Malek

Data

Crack occurrence and propagation are among critical factors that affect the performance and lifespan of civil infrastructures such as bridges. Consequently, numerous crack detection and measurement methods have been proposed and developed in the recent decades in the areas of Structural Health Monitoring and non-destructive testing. Many novel technologies have emerged with the potential to overcome the limitations of the presented techniques of crack detection and characterization. Crack detection and characterization method used in this research lies in supplementing human visual inspection capabilities in a systematic manner through an appropriate level of automation. The Augmented Reality (AR) tool developed in …

Maintenance And Restriping Strategies For Pavement Markings On Asphalt Pavements In Louisiana, Momen R. Mousa, Marwa Hassan

Data

In Louisiana, most districts restripe their roadways using waterborne paints every other year; this strategy is questionable in terms of efficiency and economy. Meanwhile, previous studies showed substantial variability in the paint service life throughout the United States ranging between 0.25 and 6.2 years. Shortcomings in modeling the retroreflectivity of waterborne paints appear to significantly contribute to these variations as several studies predicted these values using degradation curves with a coefficient of determination (R2) as low as 0.1. Therefore, the objective of this study was to (i) develop new cost-effective restriping strategies using 4-inch (15-mil thickness) and 6-inch (25-mil thickness) …

Development Of A Multi-Level Dynamic Model To Measure The Resilience Level Of Transportation Infrastructure Networks, Sharareh Kermanshachi, Jianling Li, Thahomina Jahan Nipa

Data

The recent increase in disasters is making the largest critical infrastructure system namely the transportation infrastructure system susceptible to unexpected damage. Discontinuation of services provided by transportation infrastructures will create significant societal, economic, and collateral damages. Therefore, this study aims to identify dimensions to measure the resilience of the transportation infrastructures. This study also aims to develop a model to measure the resilience of the transportation infrastructures resilience. To fulfill the aims of this study, a questionnaire was developed which was supported by a comprehensive literature review. 92 valid responses were received and analyzed qualitatively and quantitatively. Statistically significant variables …

Data From: Drivers Of Zooplankton Community Composition In A Novel Ecosystem: Hawai’I Mangroves As A Case Study, Casey L. Lewis, Elise F. Granek

Environmental Science and Management Datasets

Management of established non-native plants is challenging because removal is expensive and can produce negative consequences, yet establishment can create novel ecosystems. Red mangrove propagules were introduced to Moloka'i, Hawai’i in 1902 to mitigate the effects of soil erosion and have since spread along the coast and to adjacent islands creating novel habitat. We compared zooplankton communities between novel mangrove and historical non-mangrove habitat both within fishponds and along open coastline to examine environmental factors, including mangrove presence, affecting zooplankton community composition.

Community composition patterns were driven by lunar cycle and site characteristics, including fishpond structure, mangrove and open coast …

Alma Link Resolver Material Type Report 2020-2021, Andrée J. Rathemacher

Technical Services Reports and Statistics

Statistics for 2020-2021 on the number of OpenURL requests by material type made to the Ex Libris Alma link resolver for items held by the University of Rhode Island Libraries.

Information provided includes Material Type, Number of Requests, Number of Clicked Requests, and % Clicks from Requests.

Alma Link Resolver Referring Sources Report 2020-2021, Andrée J. Rathemacher

Technical Services Reports and Statistics

Statistics from 2020-2021 on the number of OpenURL requests made to the Alma link resolver for items held by the University of Rhode Island Libraries.

Information provided includes Source, Number of Requests, Number of Clicked Requests, % Clicks from Requests.

Note: "36520" = EBSCOhost

Alma Link Resolver Subject Report 2020-2021, Andrée J. Rathemacher

Technical Services Reports and Statistics

Statistics for 2020-2021 on the number of OpenURL requests by Library of Congress classification code made to the Ex Libris Alma link resolver for items held by the University of Rhode Island Libraries.

Information provided includes Classification Code, Classifications, Number of Requests, Number of Clicked Requests, and % Clicks from Requests.

Alma Link Resolver Title & Issn Report (Top 500) 2020-2021, Andrée J. Rathemacher

Technical Services Reports and Statistics

Statistics for 2020-2021 on the total number of OpenURL requests by journal title and ISSN made to the Ex Libris Alma link resolver for items held by the University of Rhode Island Libraries. Includes only the top 500 journals.

Information provided includes journal Title, ISSN, EISSN, Number of Requests, Number of Clicked Requests, % Clicks from Requests.

Wave, Tide And Topographical Controls On Headland Sand Bypassing: Dataset, Erin Victoria King, Daniel Conley, Gerd Masselink, Nicoletta Leonardi, Jak Mccarroll, Nieves Valiente, Tim Scott

Faculty of Science and Engineering Datasets

This dataset is in support of the article "Wave, Tide and Topographical Controls on Headland Sand Bypassing" by King et al. (2021). This dataset contains: All model input files for calibration, validation, and testing scenarios. A .xlsx file with headland morphometric parameters. A .csv file with all headland names and associated numbers as used in the manuscript. A .xlsx file with wave data from the WaveHub buoy used to characterise the wave climate. A NetCDF file with processed DTM's showing the derivation of sediment coverage along the North Coast of Cornwall, UK. A NetCDF file with modelled headland bypassing rates …

10568969_Edd, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

[Data Set] Reversible Proton-Coupled Reduction Of An Iron Nitrosyl Porphyrin Within [Dbu-H]+-Based Protic Ionic Liquid Nanodomains, Michael D. Ryan

Chemistry Research Data

Data for the related article in Inorganic Chemistry.


Reversible Proton-Coupled Reduction of an Iron Nitrosyl Porphyrin within [DBU–H]+-Based Protic Ionic Liquid Nanodomains | Inorganic Chemistry (acs.org):

DOI.

Data From: Commercial Bank And Currency Bureau Exchange Rate Sell-Buy Spreads In A Northern Mexico Metropolitan Economy, Thomas M. Fullerton Jr., Francisco J. Pallares

Datasets

Commercial banks and currency kiosk bureaus provide exchange services throughout Ciudad Juarez, Mexico, a large metropolitan economy located on the border with the United States. This study employs newspaper data to examine how the bank and kiosk sell-buy spreads are affected by fluctuations in the total number of northbound border crossers, variations in bilateral peso per dollar exchange rate, and the yield differential between 90-day Certificados de Tesorería (Mexico CETES) and 90-day U.S. Treasury Bills. The sample is comprised of monthly frequency data from January 2009 through June 2016. Parameter estimation is carried out using a GLS ARMAX procedure. Empirical …

10568969 Edd, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

2021 Btl O&M Events Log, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

2021 Second Quarter Laboratory Edd's, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Dataset For Faunal Analyses Of Biry House Food Remains, Castroville, Tx, Kathryn Maupin

Anthropology Datasets

In 2013, Van Dyke excavated a historic residence located at 309^th Paris Street in Castroville, Texas. Beginning in 1844, the house was occupied by the families that had immigrated from the Alsace region of France. Preliminary analyses of the faunal recovered from a lime slaking pit suggested that over the course of the home’s residence, family members incorporate wild taxa into their diet in addition to their traditional Alsatian foodstuffs. Expanded analyses of the faunal remains from additional features provide additional evidence that the diet of the residents slowly transitioned away from a strict Alsatian diet and eventually included …

Ru Mindful: Mindfulness, Stress, And Cognitive Functioning In College Students, Emma E. Mcbride, Jeffrey M. Greeson

Datasets

This dataset is derived from an anonymous, cross-sectional, IRB-approved, online survey study of 534 college students. Collected in 2018-2019, the data include self-reported measures of dispositional (trait) mindfulness, perceived stress, cognitive functioning, and GPA, along with demographic variables. Results from these data were originally published by McBride & Greeson (2021) in the journal Current Psychology.

Miquez & Miller, Interference In Blocking, Raw Data, Exp 1 And Exp 2, Ralph Miller, Gonzalo Miguez

Miguez & Miller, Interference in blocking, raw data

This is the raw dataset associated with the manuscript by Miguez & Miller, Blocking is not ‘pure’ cue competition: Renewal-like effects in forward and backward blocking indicate contributions by associative cue interference

Nutrition Quality Of Food Drive Donations Is Mediocre, Dawn Christina Null

Data sets

Food drive dataset

Programs Committee Activity 2020-2021, May 11, 2021, Programs Committee

Programs Committee (PC)

No abstract provided.

Sample Hummingbird Feeder Resource Depletion Investigation, Center For Urban Resilience

Module 13: Birds in the Urban Landscape

No abstract provided.