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Pavements Analysis And Design, Yang Huang, Kamyar Mahboub 2016 University of Kentucky

Pavements Analysis And Design, Yang Huang, Kamyar Mahboub

Kamyar C. Mahboub

No abstract provided.


Public Transport Accessibility Levels For Ahmedabad, India, Jay S. Shah, Bhargav Adhvaryu 2016 Transport Planning Consultant, India

Public Transport Accessibility Levels For Ahmedabad, India, Jay S. Shah, Bhargav Adhvaryu

Journal of Public Transportation

Public transport plays an important role in a city’s economy and its social equity. It is also instrumental in reducing automobile dependence and traffic congestion. Several factors must come together to achieve well-functioning public transport systems. One major factor is the level of accessibility offered by the public transport system. To better understand and consequentially enhance accessibility, we must be able to measure it and map it, which is the key aim of this paper.

The methodology in this study, which was originally developed by the London Borough of Hammersmith and Fulham and later adopted by Transport for London ...


Modeling Bus Dwell Time And Time Lost Serving Stop In China, Chao Wang, Zhirui Ye, Yuan Wang, Yueru Xu, Wei Wang 2016 Southeast University, China

Modeling Bus Dwell Time And Time Lost Serving Stop In China, Chao Wang, Zhirui Ye, Yuan Wang, Yueru Xu, Wei Wang

Journal of Public Transportation

The primary objective of this study was to develop a quantitative approach to estimate bus dwell time and time lost serving stop, which included acceleration and deceleration time, dead time, and time for serving boarding and alighting passengers. A polynomial model incorporating kinematics of a particle was derived for estimating bus acceleration and deceleration time. In addition, descriptive statistics methods were used to analyze dead time. A case study was conducted to show the applicability of the proposed model with data collected from the seven most common types of bus stops in China. R-square and Mean Absolute Percentage Error (MAPE ...


Experimental Study On Local Bond Stress-Slip Relationship In Self-Compacting Concrete, Marian Sabau, Ioan Pop, Traian Onet 2016 Universidad de la Costa

Experimental Study On Local Bond Stress-Slip Relationship In Self-Compacting Concrete, Marian Sabau, Ioan Pop, Traian Onet

Marian Sabau

This paper summarizes the results of an experimental study on local bond stress-slip relationship of deformed reinforcing bars embedded in self-compacting concrete, considering the effect of concrete confinement by transverse reinforcement. In this study were cast 104 specimens by using self-compacting concrete and vibrated concrete. Pull-out tests were performed on deformed bars with short anchorage length (ld ≤ 5∅). The parameters analyzed were the concrete type, the confining reinforcement, the bar diameter and the anchorage length of bar. The results of this study showed that the ultimate bond strength was higher for self-compacting concrete compared to vibrated concrete, and the slip ...


Rubble Pile Characterization Model, William P. Schonberg, Jason Baird, Paul Nicholas Worsey, Abdeldjelil Belarbi, Roger A. LaBoube, Braden Lusk, R. Flanagan, H. Burleson, Robert S. Woodley, Warren Noll 2016 Missouri University of Science and Technology

Rubble Pile Characterization Model, William P. Schonberg, Jason Baird, Paul Nicholas Worsey, Abdeldjelil Belarbi, Roger A. Laboube, Braden Lusk, R. Flanagan, H. Burleson, Robert S. Woodley, Warren Noll

Paul Worsey

Rubble piles created following the collapse of a building in a combat situation can significantly impact mission accomplishment, particularly in the area of movement and maneuver. Rubble characteristics must be known, for example, in order to predict the ability of a vehicle to override the collateral damage from weapon effects in urban areas. Two types of models are developed: a first-order model and a first-principles-based model. In both models, we assume complete rubblization of the building and develop a rubble profile model using the size and composition of the collapsed structure to predict the rubble volume. In both cases, this ...


Life Cycle Analysis Of Railway Noise And Vibration Mitigation Methodologies With Respect To Curve Squeal Noises, Sadudee Setsobhonkul, Sakdirat Kaewunruen 2016 University of Birmingham

Life Cycle Analysis Of Railway Noise And Vibration Mitigation Methodologies With Respect To Curve Squeal Noises, Sadudee Setsobhonkul, Sakdirat Kaewunruen

Sakdirat Kaewunruen

Wheel/rail interface inevitably induces a travelling source of sound and vibration, which spread over a long distance of rail network and neighborhood corridor. The sound and vibration can be generated in various forms and spectra. The undesirable sound and vibration, is often called ‘noise’, includes rolling noise, impact noise, curve noise, mechanical noise, airborne noise, wheel/rail noise, structure- and ground-borne noises. The noise and vibration that is transferred back through the vehicle body mainly affects ride quality, customer experience, and structural integrity of the rolling stocks, whereas the vibration that is transmitted from the rails to the supporting ...


Effect Of Gap Flow On The Shallow Wake Of A Sharp-Edged Bluff Body – Turbulence Parameters, A.M Shinneeb, R. Balachandar 2016 University of Windsor

Effect Of Gap Flow On The Shallow Wake Of A Sharp-Edged Bluff Body – Turbulence Parameters, A.M Shinneeb, R. Balachandar

Civil and Environmental Engineering Publications

This experimental study was carried out to investigate the turbulent wake generated by a vertical sharp-edged flat plate suspended in a shallow channel flow with a gap near the bed. The objective of this study is to understand the effect of the gap flow on the turbulent wake by studying two different gap heights between the channel bed and the bottom edge of the bluff body. These two cases were compared to the no-gap case which is considered as a reference case. The maximum flow velocity was 0.45 m/s and the Reynolds number based on the water depthwas ...


Estimation Of Earthquake Loss Due To Bridge Damage In The St. Louis Metropolitan Area. Ii: Indirect Losses, David Lee Enke, Chakkaphan Tirasirichai, Ronaldo Luna 2016 Missouri University of Science and Technology

Estimation Of Earthquake Loss Due To Bridge Damage In The St. Louis Metropolitan Area. Ii: Indirect Losses, David Lee Enke, Chakkaphan Tirasirichai, Ronaldo Luna

David Enke

An approach to estimate the indirect economic loss due to damaged bridges within the highway system from an earthquake event is presented. The indirect cost considered refers to the increased highway transportation cost only. The study zone covers the St. Louis metropolitan area and its surrounding suburban regions. An earthquake scenario centered in St. Louis, with a magnitude 7.0 is used. The direct earthquake loss was primarily damage to bridges, which causes an increase in travel time and distance within the transportation network. This information is then used as input for the indirect loss model. The indirect loss is ...


Automated Control Flaw Generation Procedure: Cheakamus Dam Case Study, Bogdan Pavlovic 2016 The University of Western Ontario

Automated Control Flaw Generation Procedure: Cheakamus Dam Case Study, Bogdan Pavlovic

Electronic Thesis and Dissertation Repository

This thesis deals with the problem of aging hydropower infrastructure systems and system components, a problem that is very common across Canada. Flaws of common risk analysis methods are noted, and the need for new risk analysis approaches is identified. System dynamics simulation method is introduced as an implementation mechanism for the System Theoretic Process Analysis (STPA). STPA and its adaptation to complex hydropower systems are explained thoroughly. Fuzzy logic is used to model operator’s decision making. The main objectives of the research include the development of an automated generic approach that implements STPA and fuzzy logic for the ...


Estimation Of Average Daily Traffic On Local Roads In Kentucky, Reginald R. Souleyrette, Brian K. Howell, Eric R. Green, William Nicholas Staats 2016 University of Kentucky

Estimation Of Average Daily Traffic On Local Roads In Kentucky, Reginald R. Souleyrette, Brian K. Howell, Eric R. Green, William Nicholas Staats

Eric R. Green

Kentucky Transportation Cabinet (KYTC) officials use annual average daily traffic (AADT) to estimate intersection performance across the state maintained highway system. KYTC currently collects AADTs for state maintained roads but frequently lacks this information on local roads. A method is needed to estimate local road AADTs in a cost-effective and reasonable manner. Kentucky Transportation Center (KTC) researchers conducted a literature review on U.S. AADT models but found that none of them were suitable to Kentucky. Therefore, KTC developed an AADT model using non-linear regression to estimate AADTs on approaches to those intersections.

KTC developed a Poisson distributed, non-linear regression ...


Evaluation Plan For The Ticketing Aggressive Cars And Trucks (Tact) Program In Kentucky, Eric R. Green 2016 University of Kentucky

Evaluation Plan For The Ticketing Aggressive Cars And Trucks (Tact) Program In Kentucky, Eric R. Green

Eric R. Green

Kentucky State Police Division of Commercial Vehicle Enforcement in cooperation with Federal Motor Carrier Safety Administration (FMCSA) has started a concentrated education and enforcement campaign in an effort to increase the safety and awareness of drivers around commercial vehicles. The University of Kentucky Transportation Center has evaluated this campaign and reported the effectiveness of this effort. The campaign was focused in two high volume, high crash interstate areas: one in northern Kentucky on I‐75, and one in the Louisville area on I‐65. Several blitzes (including a media and enforcement component) were conducted throughout the year. This evaluation measured ...


Analysis Of Traffic Crash Data In Kentucky (2010-2014), Eric R. Green, Kenneth R. Agent, Jerry G. Pigman, Michael A. Fields 2016 University of Kentucky

Analysis Of Traffic Crash Data In Kentucky (2010-2014), Eric R. Green, Kenneth R. Agent, Jerry G. Pigman, Michael A. Fields

Eric R. Green

This report documents an analysis of traffic crash data in Kentucky for the years of 2010 through 2014. A primary objective of this study was to determine average crash statistics for Kentucky highways. Rates were calculated for various types of highways and for counties and cities. Difference criteria were used for exposure.


Analysis Of Traffic Crash Data In Kentucky (1999 - 2003), Eric R. Green, Kenneth R. Agent, Jerry G. Pigman, Monica L. Barrett 2016 University of Kentucky

Analysis Of Traffic Crash Data In Kentucky (1999 - 2003), Eric R. Green, Kenneth R. Agent, Jerry G. Pigman, Monica L. Barrett

Eric R. Green

This report documents an analysis of traffic crash data in Kentucky for the years of 1999 through 2003. A primary objective of this study was to determine average crash statistics for Kentucky highways. Average and critical numbers and rates of crashes were calculated for various types of highways in rural and urban areas. These data can be used in Kentucky's procedure to identify locations that have abnormal rates or numbers of crashes.

The other primary objective of this study was to provide data that can be used in the preparation of the problem identification portion of Kentucky's Annual ...


2015 Safety Belt Usage Survey In Kentucky, Kenneth R. Agent, Eric R. Green, Michael A. Fields 2016 University of Kentucky

2015 Safety Belt Usage Survey In Kentucky, Kenneth R. Agent, Eric R. Green, Michael A. Fields

Eric R. Green

The objective of the survey summarized in this report was to establish a statewide safety belt usage rate in Kentucky for 2015. This rate can be compared to those determined from previous surveys. The 2015 statewide survey documents the continued increase in usage associated with the change in the law to allow primary enforcement and related education and enforcement.


Creating A Highway Information System For Safety Roadway Features, Brian K. Howell, Kenneth R. Agent, Eric Green 2016 University of Kentucky

Creating A Highway Information System For Safety Roadway Features, Brian K. Howell, Kenneth R. Agent, Eric Green

Eric R. Green

Roadway departures are the leading cause of roadside fatalities. The Kentucky Transportation Cabinet (KYTC) has undertaken a number of roadside safety measures to reduce roadway departures. Specifically, KYTC has installed several low-cost, systemic roadway safety treatments to Kentucky’s roadways in recent years. These treatments include cable barriers, high friction surface treatments, rumble stripes, and Safety Edges. KYTC has installed approximately 44 cable barrier systems over 265 miles of roadway,112 HFST applications over 20 miles of roadway, 750 rumble stripe installations over 2,500 miles of roadway, and 147 Safety Edge treatments on 580 miles of roadway. The project ...


A Framework To Utilize Shear Strength Properties For Evaluating Rutting Potentials Of Unbound Aggregate Materials, Issam Qamhia, Erol Tutumluer, Liang Chern Chow, Debakanta Mishra 2016 University of Illinois at Urbana-Champaign

A Framework To Utilize Shear Strength Properties For Evaluating Rutting Potentials Of Unbound Aggregate Materials, Issam Qamhia, Erol Tutumluer, Liang Chern Chow, Debakanta Mishra

Debakanta Mishra

This paper presents shear strength and permanent deformation trends of four unbound aggregate materials, commonly used for base and subbase layers in the state of North Carolina, USA, studied through repeated load triaxial testing, using the University of Illinois FastCell equipment. A testing and modeling framework has been established to develop a proper permanent deformation prediction model, referred to herein as the UIUC rutting model, with number of load applications. According to the framework, the unbound aggregate shear strength properties are incorporated into the model using the ratio of the applied wheel load shear stress to the mobilized shear strength ...


How To Establish Successful Cooperative Student Learning Centers For Stem Courses, Ronald James Bieniek, Douglas R. Carroll, Cesar Mendoza, Oran Allan Pringle, Ekkehard Sinn, Kai-Tak Wan, Donald C. Wunsch 2016 Missouri University of Science and Technology

How To Establish Successful Cooperative Student Learning Centers For Stem Courses, Ronald James Bieniek, Douglas R. Carroll, Cesar Mendoza, Oran Allan Pringle, Ekkehard Sinn, Kai-Tak Wan, Donald C. Wunsch

Oran Pringle

Students learn more if they are actively involved in the learning process, particularly in a cooperative manner. Several UMR faculty have operated course-based learning centers (LCs) as part of the campus-wide Learning Enhancement Across Disciplines (LEAD) Program of student learning assistance and enhancement. LCs are designed to assist large numbers of students in a cost- and time-efficient manner that promotes student engagement without requiring undue amounts of faculty time. Course instructors spend time in the open learning environment of the LC, in lieu of office hours, guiding students to master course material and skills in their evolution from novice to ...


Evaluating Remotely Sensed Images For Use In Inventorying Roadway Infrastructure Features, Shauna L. Hallmark, David Alexander Veneziano, Kamesh mantravadi, Reginald R. Souleyrette 2016 Iowa State University

Evaluating Remotely Sensed Images For Use In Inventorying Roadway Infrastructure Features, Shauna L. Hallmark, David Alexander Veneziano, Kamesh Mantravadi, Reginald R. Souleyrette

Reginald R. Souleyrette

The main objective of this research was to evaluate the use of remotely sensed images as a method to facilitate accurate and rapid collection of large quantities of inventory data. Images collected from either an airplane or satellite can be collected fairly rapidly for large areas without locating on-road or interfering with traffic. With the launching of the IKONOS satellite, resolutions of 1 meter can be practically obtained from space. Image resolution of as high as 1-inch are possible with aerial photography. Aircraft can be flown at higher altitudes for lower resolutions. Since cost typically decreases as resolution decreases, one ...


Estimation Of Average Daily Traffic On Local Roads In Kentucky, Reginald R. Souleyrette, Brian K. Howell, Eric R. Green, William Nicholas Staats 2016 University of Kentucky

Estimation Of Average Daily Traffic On Local Roads In Kentucky, Reginald R. Souleyrette, Brian K. Howell, Eric R. Green, William Nicholas Staats

Reginald R. Souleyrette

Kentucky Transportation Cabinet (KYTC) officials use annual average daily traffic (AADT) to estimate intersection performance across the state maintained highway system. KYTC currently collects AADTs for state maintained roads but frequently lacks this information on local roads. A method is needed to estimate local road AADTs in a cost-effective and reasonable manner. Kentucky Transportation Center (KTC) researchers conducted a literature review on U.S. AADT models but found that none of them were suitable to Kentucky. Therefore, KTC developed an AADT model using non-linear regression to estimate AADTs on approaches to those intersections.

KTC developed a Poisson distributed, non-linear regression ...


Separation And Quantification Of N-Acetylcysteine-Amide (Naca) By Hplc With Fluorescence Detection, Wei Wu, Glenn Goldstein, Craig D. Adams, Richard H. Matthews, Nuran Ercal 2016 Missouri University of Science and Technology

Separation And Quantification Of N-Acetylcysteine-Amide (Naca) By Hplc With Fluorescence Detection, Wei Wu, Glenn Goldstein, Craig D. Adams, Richard H. Matthews, Nuran Ercal

Nuran Ercal

N-acetyl-l-cysteine (NAC) is a well-known antioxidant that is capable of facilitating glutathione (GSH) biosynthesis and replenishing intracellular GSH under oxidatively challenging circumstances. N-acetyl-cysteine-amide (NACA), the amide form of NAC, is a newly designed and synthesized thiol-containing compound which is believed to be more lipophilic and permeable through cell membranes than NAC. The metabolic and antioxidant effects of these compounds in vitro and in vivo are under investigation. However, an analytical method that can separate and quantify both compounds simultaneously is not yet available, to the best of our knowledge. Because of their structural similarities, the two compounds are difficult to ...


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