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Articles 1 - 30 of 46
Full-Text Articles in Engineering
Design, Construction, And Preliminary Investigations Of Otta Seal In Iowa, Sharif Y. Gushgari, Yang Zhang, Ali Nahvi, Halil Ceylan, Sunghwan Kim, Ali Arabzadeh, Charles T. Jahren, Charles Øverby
Design, Construction, And Preliminary Investigations Of Otta Seal In Iowa, Sharif Y. Gushgari, Yang Zhang, Ali Nahvi, Halil Ceylan, Sunghwan Kim, Ali Arabzadeh, Charles T. Jahren, Charles Øverby
Ali Nahvi
Faced with limited financial resources, pavement engineers constantly seek more durable and economical technologies for road preservations and rehabilitations. Consequently, there have been many efforts to study resurfacing strategies, including various types of sealing for local roads. Among different sealing methodologies, Otta seal is a technique that has not yet been sufficiently studied in the U.S.A. For this investigation, the first Otta seal site in the state of Iowa was constructed using a double-layer Otta seal design over 6.4 km of cracked asphalt pavement. Otta seal design and construction details are documented and discussed, and test sections using various aggregates …
Wastewater Pipe Consequence Of Failure Model For Risk-Based Asset Management Using Analytic Hierarchy Process, Greta Vladeanu, John Matthews
Wastewater Pipe Consequence Of Failure Model For Risk-Based Asset Management Using Analytic Hierarchy Process, Greta Vladeanu, John Matthews
John C. Matthews
Economics Of Upgrading Gravel Roads To Otta Seal Surface, Ali Nahvi, Charles T. Jahren, Halil Ceylan, Ali Arabzadeh, Sharif Y. Gushgari, Douglas D. Gransberg
Economics Of Upgrading Gravel Roads To Otta Seal Surface, Ali Nahvi, Charles T. Jahren, Halil Ceylan, Ali Arabzadeh, Sharif Y. Gushgari, Douglas D. Gransberg
Ali Nahvi
The Subject Librarian Newsletter, Engineering And Computer Science, Fall 2017, Buenaventura "Ven" Basco
The Subject Librarian Newsletter, Engineering And Computer Science, Fall 2017, Buenaventura "Ven" Basco
Buenaventura "Ven" Basco
No abstract provided.
Evaluation Of Testing Methods For Tracking Cipp Liners’ Life-Cycle Performance, Shaurav Alam, John Matthews
Evaluation Of Testing Methods For Tracking Cipp Liners’ Life-Cycle Performance, Shaurav Alam, John Matthews
John C. Matthews
No abstract provided.
Evaluation Of The Role Of Driver’S Knowledge Of Who Has The Right-Of-Way Contributes To Interstate On-Ramp Crashes, Deogratias Eustace, Vamsi Krishna Indupuru
Evaluation Of The Role Of Driver’S Knowledge Of Who Has The Right-Of-Way Contributes To Interstate On-Ramp Crashes, Deogratias Eustace, Vamsi Krishna Indupuru
Deogratias Eustace
The knowledge of drivers on who has the right-of-way between the one on mainline lanes of a freeway and the one entering the freeway through on-ramp junction lane was evaluated. In addition, drivers’ opinions on how to make the on-ramp junctions safer were collected. A survey instrument with 21 items requesting drivers’ information in regard with demographics, freeway driving experience, knowledge of right-of-way and merging practices was used for data collection. The results show that crashes are relatively rare events and for some reasons, most of them never happen but result into near misses, which can not be reported and …
Effect Of Calcium Carbonate Fineness On Calcium Sulfoaluminate-Belite Cement, Yeonung Jeong, Craig Hargis, Sungchul Chun, Juhyuk Moon
Effect Of Calcium Carbonate Fineness On Calcium Sulfoaluminate-Belite Cement, Yeonung Jeong, Craig Hargis, Sungchul Chun, Juhyuk Moon
Craig Hargis
Large-Scale Flexible Membrane For Automatic Strain Monitoring Of Transportation Infrastructure, Simon Laflamme, Venkata D. Kolipara, Hussam S. Saleem, Randall L. Geiger
Large-Scale Flexible Membrane For Automatic Strain Monitoring Of Transportation Infrastructure, Simon Laflamme, Venkata D. Kolipara, Hussam S. Saleem, Randall L. Geiger
Randall Geiger
Structural Health Monitoring (SHM) of transportation infrastructures is a complex task, typically conducted by visual inspection due to the technical and economical constrains of existing health monitoring technologies. It results that health monitoring is highly dependent on scheduling and on the judgment of the inspectors, which can be costly and ineffective. Thus, it is fundamental to automate the SHM process to allow timely inspection, maintenance, and management of transportation infrastructure. The authors propose a flexible membrane that can be deployed over large surfaces, at low cost, for automatic and continuous monitoring of strains. The membrane, termed sensing skin, is constituted …
Natural Selection Of Asphalt Mix Stiffness Predictive Models With Genetic Programming, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Halil Ceylan, Siddhartha K. Khaitan
Natural Selection Of Asphalt Mix Stiffness Predictive Models With Genetic Programming, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Halil Ceylan, Siddhartha K. Khaitan
Siddhartha Khaitan
Genetic Programming (GP) is a systematic, domain-independent evolutionary computation technique that stochastically evolves populations of computer programs to perform a user-defined task. Similar to Genetic Algorithms (GA) which evolves a population of individuals to better ones, GP iteratively transforms a population of computer programs into a new generation of programs by applying biologically inspired operations such as crossover, mutation, etc. In this paper, a population of Hot-Mix Asphalt (HMA) dynamic modulus stiffness prediction models is genetically evolved to better ones by applying the principles of genetic programming. The HMA dynamic modulus (|E*|), one of the stiffness measures, is the primary …
Non-Linear Inverse Analysis Of Transportation Structures Using Neuro-Adaptive Networks With Hybrid Learning Algorithm, Kasthurirangan Gopalakrishnan, Siddhartha K. Khaitan, Halil Ceylan
Non-Linear Inverse Analysis Of Transportation Structures Using Neuro-Adaptive Networks With Hybrid Learning Algorithm, Kasthurirangan Gopalakrishnan, Siddhartha K. Khaitan, Halil Ceylan
Siddhartha Khaitan
The load-bearing capacity of pavement structures is a fundamental structural performance metric of transportation infrastructure networks in the context of safe and efficient movement of people and goods from one place to another. Non-destructive test (NDT) methods are typically employed to routinely evaluate the structural condition of pavement structures, their lifespan and the appropriate maintenance activities to be carried out. This involves computing the Young’s modulus of each layer of the pavement structure through inverse analysis of acquired NDT data. Over the past two decades, soft computing techniques such as Artificial Neural Networks (ANNs), Genetic Algorithms (GAs), and Fuzzy Logic …
Smart Sensing Skin For Detection And Localization Of Fatigue Cracks, Sari Kharroub, Simon Laflamme, Chunhui Song, Daji Qiao, Brent M. Phares, Jian Li
Smart Sensing Skin For Detection And Localization Of Fatigue Cracks, Sari Kharroub, Simon Laflamme, Chunhui Song, Daji Qiao, Brent M. Phares, Jian Li
Daji Qiao
Fatigue cracks on steel components may have strong consequences on the structure's serviceability and strength. Their detection and localization is a difficult task. Existing technologies enabling structural health monitoring have a complex link signal-to-damage or have economic barriers impeding large-scale deployment. A solution is to develop sensing methods that are inexpensive, scalable, with signals that can directly relate to damage. The authors have recently proposed a smart sensing skin for structural health monitoring applications to mesosystems. The sensor is a thin film soft elastomeric capacitor (SEC) that transduces strain into a measurable change in capacitance. Arranged in a network configuration, …
Advanced Methodology To Determine Highway Construction Cost Index (Hcci), Joseph Shrestha
Advanced Methodology To Determine Highway Construction Cost Index (Hcci), Joseph Shrestha
Joseph Shrestha
No abstract provided.
In-Plane Loading Of Brick Veneer Over Wood Shear Walls, Elias Anis Toubia, James M. Lintz
In-Plane Loading Of Brick Veneer Over Wood Shear Walls, Elias Anis Toubia, James M. Lintz
Elias Toubia
In the design of wood stud walls with brick veneer, current design building codes specify that the wood stud wall should resist all in-plane and out-of-plane loads (IBC 2009). For out-of-plane loads, this assumption is entirely justified as the brittle brick veneer will crack and lose its capacity to resist bending. For in-plane loads, the brick veneer is significantly stiffer than the wood shear wall, and the veneer is unlikely to crack before the wood shear wall reaches its allowable capacity. The assumption that the wood shear wall resists the entire load is based on the further assumption that the …
Interdisciplinary, Collaborative International Service Learning: Developing Engineering Students As Global Citizens, Anthony D. Songer, Karen R. Breitkreuz
Interdisciplinary, Collaborative International Service Learning: Developing Engineering Students As Global Citizens, Anthony D. Songer, Karen R. Breitkreuz
Karen R. Breitkreuz
Recent calls to reform engineering education place emphasis on applied math and science within the broader context of globalization, economics, the environment, and society. This broad and complex challenge necessitates the investigation of new interdisciplinary education approaches for engineering education. This paper presents a formal approach for developing engineering students as global citizens. The 360 Degree Model for Educating Socially Responsible Global Citizens (360 Global Ed model) presented herein includes a framework for foundational theory, educational environment, academic coursework, and outcomes. At the core of the emerging model is an international service learning experience called the Village Network. The Village …
Comprehensive Framework For Speed-Zone Guidelines, Joseph Shrestha, Pramen P. Shrestha
Comprehensive Framework For Speed-Zone Guidelines, Joseph Shrestha, Pramen P. Shrestha
Joseph Shrestha
Umass Amherst Green Building Guidelines 2013, Ludmilla Pavlova-Gillham, Ted Mendoza, Ezra Small, Patricia O'Flaherty, Nariman Mostafavi, Mohamed Farzinmoghadam, Somayeh Tabatabaee Pozveh
Umass Amherst Green Building Guidelines 2013, Ludmilla Pavlova-Gillham, Ted Mendoza, Ezra Small, Patricia O'Flaherty, Nariman Mostafavi, Mohamed Farzinmoghadam, Somayeh Tabatabaee Pozveh
Ludmilla D Pavlova
Facilities & Campus Services, Sustainable UMass and Campus Planning support sustainability and energy conservation initiatives by providing in-house resources to campus staff as well as designers and contractors working with the University. The UMass Amherst Green Building Guidelines provide a framework for approaching new construction and major renovation projects at UMass Amherst that are undergoing LEED certification by focusing the conversation on green building aspects that are most important to the campus. They are intended to be the beginning of a dynamic conversation between designers, environmental consultants and constructors, university stakeholders, and users of new high performance buildings.
A Computer Program For Optimal Control Of Water Supply Pump Stations: Development And Testing, Donald V. Chase
A Computer Program For Optimal Control Of Water Supply Pump Stations: Development And Testing, Donald V. Chase
Donald V. Chase
This report presents an optimal control methodology designed to reduce the electrical consumption and operating costs at Army water supply pumping stations. The methodology, contained in a computer program called Optimal Control of Pumping Stations (OCOPS), enables water utility managers and operators to reduce the electrical consumption at pumping stations while maintaining adequate storage and system pressures for fire protection. OCOPS can be applied to any water distribution system and is not limited to any number of pumps, pump stations, or storage tanks within the system. The optimal control strategy developed is based on electricity unit charges, but can be …
Water Distribution Modeling, Thomas M. Walski, Donald V. Chase, Dragan A. Savic
Water Distribution Modeling, Thomas M. Walski, Donald V. Chase, Dragan A. Savic
Donald V. Chase
To effectively use water distribution models, the engineer must be able to link knowledge of basic hydraulic theory and the mechanics of the program with that of the operation of real-world systems. Water Distribution Modeling does just that. Written by industry experts, it provides a practical resource for engineers and modelers that goes well beyond being a how-to guide for typing data into a computer program. It contains straightforward answers to common questions related both to modeling and to distribution systems in general. This textbook walks the practicing engineer or student through the modeling process from start to finish — …
Government Institutions And Infrastructure Skills Development, Michael Regan, Jim Smith, Peter Love
Government Institutions And Infrastructure Skills Development, Michael Regan, Jim Smith, Peter Love
Michael Regan
The capacity of state institutions is central to the efficient delivery and management of infrastructure. The paper examines two models for improving the skills of managers in central and line agencies of government for infrastructure procurement and management in emerging economies. The first examines the role of the Public Private Partnership (PPP) unit, a specialist agency equipped with the technical capabilities, transactional experience and budget to provide training and assistance to line agencies for the effective delivery of infrastructure projects. Integrated into this model, and used by several nations, is the use of trained relationship managers to manage service contracts …
Identification Of Risk Factors Associated With Motorcycle-Related Fatalities In Ohio, Deogratias Eustace, Vamsi Krishna Indupuru, Peter W. Hovey
Identification Of Risk Factors Associated With Motorcycle-Related Fatalities In Ohio, Deogratias Eustace, Vamsi Krishna Indupuru, Peter W. Hovey
Peter Hovey
Out of the 7,138,476 motorcycles operating on U.S. roads, 346,925 were registered in the state of Ohio in the year 2007. Although motorcycles represent only 2.8% of all registered vehicles in the state of Ohio, motorcycling accounts for more than 13% of Ohio highway traffic fatalities. Since 2005, Ohio has had a distressing distinction of being among the fifteen states that have sustained more than half of all motorcycle fatalities recorded in the USA (NHTSA 2007; NHTSA 2008a). For the past ten years, the overall motorcycle crash fatalities have been increasing while the motor vehicle occupant crash fatalities have been …
Performance Comparison Of A Roundabout Versus Two-Way Stop Controlled (Twsc) Intersections, Deogratias Eustace
Performance Comparison Of A Roundabout Versus Two-Way Stop Controlled (Twsc) Intersections, Deogratias Eustace
Deogratias Eustace
The superior safety record of modern roundabouts is well known in Western Europe, Australia and in most British-influenced countries around the world. The experience from a single modern roundabout installed in the City of Manhattan, Kansas, some three years ago, also shares the same experience. A major study of the performance of Manhattan, Kansas, modern roundabout was conducted at Kansas State University (KSU) and was co-sponsored by Mac-Blackwell National Rural Transportation Study Center, Kansas State University, and the City of Manhattan. The study examined three intersections, one modern roundabout and two Two-Way Stop Controlled (TWSC) intersections with similar traffic conditions. …
Identification Of Risk Factors Associated With Motorcycle-Related Fatalities In Ohio, Deogratias Eustace, Vamsi Krishna Indupuru, Peter W. Hovey
Identification Of Risk Factors Associated With Motorcycle-Related Fatalities In Ohio, Deogratias Eustace, Vamsi Krishna Indupuru, Peter W. Hovey
Deogratias Eustace
Out of the 7,138,476 motorcycles operating on U.S. roads, 346,925 were registered in the state of Ohio in the year 2007. Although motorcycles represent only 2.8% of all registered vehicles in the state of Ohio, motorcycling accounts for more than 13% of Ohio highway traffic fatalities. Since 2005, Ohio has had a distressing distinction of being among the fifteen states that have sustained more than half of all motorcycle fatalities recorded in the USA (NHTSA 2007; NHTSA 2008a). For the past ten years, the overall motorcycle crash fatalities have been increasing while the motor vehicle occupant crash fatalities have been …
A Simplified Method For Analyzing Factors Contributing To Motorcyclists’ Fatal Injuries In Ohio, Deogratias Eustace, Vamsi Krishna Indupuru
A Simplified Method For Analyzing Factors Contributing To Motorcyclists’ Fatal Injuries In Ohio, Deogratias Eustace, Vamsi Krishna Indupuru
Deogratias Eustace
The aim of this paper was to analyze traffic crash data by using a simplified method in determining significant factors that increase the risk of a motorcyclist being fatally injured once involved in a motorcycle crash in Ohio. The concept of overrepresentation, which is similar to relative risk, was used in identifying significant variables associated with the elevated risk of a motorcycle crash resulting into a fatality. The overrepresentation factor (ORF) was calculated for each variable of interest. The ORF offers a simple but powerful procedure of determining whether a certain factor significantly occurs more or less frequently in one …
Using Simulated Virtual Interactivity In Construction Education, Saeed Rokooei, James Goedert
Using Simulated Virtual Interactivity In Construction Education, Saeed Rokooei, James Goedert
Saeed Rokooei
Innovation Practices In Construction Firms, Mohammad Iranmanesh, Nor’Aini Yusof, Ernawati Mustafa Kamal
Innovation Practices In Construction Firms, Mohammad Iranmanesh, Nor’Aini Yusof, Ernawati Mustafa Kamal
Mohammad Iranmanesh
The construction firms need to implement particular practices to successfully adopt or generate innovation to ensure growth and survival. The aim of this study is to investigate the association between construction firms’ characteristics and their level of innovative practices implementation. Data was gathered through a survey of 105 firms in the Malaysian construction industry. Data was analyzed using the non-linear canonical correlation technique. The results indicate that old and big firms with non- public clients exercise more innovation creation practices. Young and small firms with public clients implement more innovation adoption practices. Contractor firms which work nationally or internationally practice …
Guidelines For Speed Reduction In Towns Along Rural Highways, Joseph Shrestha, A. Said, Y. Tian, Pramen P. Shrestha
Guidelines For Speed Reduction In Towns Along Rural Highways, Joseph Shrestha, A. Said, Y. Tian, Pramen P. Shrestha
Joseph Shrestha
No abstract provided.
Spatiotemporal Visualization Of Major Cost Items In Highway Construction In Iowa, Deepanshi Jain, Joseph Shrestha, J. David Jeong
Spatiotemporal Visualization Of Major Cost Items In Highway Construction In Iowa, Deepanshi Jain, Joseph Shrestha, J. David Jeong
Joseph Shrestha
No abstract provided.
Framework For Advanced Daily Work Report System, Joseph Shrestha, H. David Jeong, Douglas D. Gransberg
Framework For Advanced Daily Work Report System, Joseph Shrestha, H. David Jeong, Douglas D. Gransberg
Joseph Shrestha
No abstract provided.
Preconstruction Services Cost Estimating Guidebook, Douglas D. Gransberg, H. David Jeong, E. Craigie, J. Rueda, Joseph Shrestha
Preconstruction Services Cost Estimating Guidebook, Douglas D. Gransberg, H. David Jeong, E. Craigie, J. Rueda, Joseph Shrestha
Joseph Shrestha
No abstract provided.
Comparison Of Union And Non-Union Bids On Ohio School Facilities Commission Construction Projects, Alan Atalah
Comparison Of Union And Non-Union Bids On Ohio School Facilities Commission Construction Projects, Alan Atalah
Alan Atalah
In 1997, the Ohio senate passed Senate Bill 102 which established the Ohio School Facilities Commission as a separate agency to oversee the rebuilding projects of the public schools in Ohio. To lower the construction cost, the bill exempted construction contractors from paying prevailing wages on these projects based on the hypothesis that this exemption would save the Ohio tax payer 10.7%. Many other studies concluded that these savings would range from 1.5 to 26%. The purpose of this research was to investigate this hypothesis through the statistical analysis of 8093 bids received for the schools’ construction from the years …