Babak Safaei

ORCID: 0000-0001-5770-9545
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About
Contact & Profiles
Research Areas
  • Traffic and Road Safety
  • Asphalt Pavement Performance Evaluation
  • Infrastructure Maintenance and Monitoring
  • Vehicle emissions and performance
  • Safety Warnings and Signage
  • Traffic control and management
  • Traffic Prediction and Management Techniques
  • Concrete Corrosion and Durability
  • Machine Learning in Healthcare
  • Tensor decomposition and applications
  • Blind Source Separation Techniques
  • Artificial Intelligence in Healthcare
  • Non-Destructive Testing Techniques
  • Industrial Vision Systems and Defect Detection
  • Computational Physics and Python Applications
  • Sepsis Diagnosis and Treatment
  • Energy, Environment, and Transportation Policies

Michigan State University
2021-2022

University of Iowa
2021

Michigan State University Foundation
2021

Iowa State University
2021

Improving the Intensive Care Unit (ICU) management network and building cost-effective well-managed healthcare systems are high priorities for units. Creating accurate explainable mortality prediction models helps identify most critical risk factors in patients’ survival/death status early detect in-need patients. This study proposes a highly efficient machine learning model predicting ICU upon discharge using information available during first 24 hours of admission. The important features...

10.1371/journal.pone.0262895 article EN cc-by PLoS ONE 2022-05-05

Cracks considerably reduce the life span of pavement surfaces. Currently, there is a need for development robust automated distress evaluation systems that comprise low-cost crack detection method performing fast and cost-effective roadway health monitoring practices. Most current methods are costly have labor-intensive learning processes, so they not suitable small local-level projects with limited resources or only usable specific types. This paper proposes new uses an adapted version...

10.1177/03611981211002203 article EN Transportation Research Record Journal of the Transportation Research Board 2021-04-12

Economic factors are assumed to have substantial effects on transportation crash trends. This study makes a comprehensive examination of the relationship between retail gasoline price, and fatal traffic crashes from 2007 2016 in U.S. Random effect negative binomial (RENB) regression models used investigate while controlling for other effective factors. is achieved by developing appropriate prediction models. Based role gender rider's mode interpreting results, seven developed inflation...

10.1016/j.treng.2021.100053 article EN cc-by Transportation Engineering 2021-02-06

Research was conducted at a freeway exit ramp with significant horizontal curvature to evaluate the effectiveness of dynamic speed feedback signs (DSFSs) as reduction countermeasure. Several aspects DSFSs were evaluated, including display size, border type, lateral installation position, and vehicle detection range. Three different full-matrix utilized, which included 15-in. panel yellow border, 18-in. no border. Each sign individually installed tested identical locations near start curve,...

10.1177/03611981221115069 article EN Transportation Research Record Journal of the Transportation Research Board 2022-08-21

Understanding speed selection behavior of drivers following limit increases is critically important. To date, the literature has largely focused on freeways and effects changes two-lane highways remains under researched. Prior research generally to mean speeds, although speeds both highest lowest are also great interest. This study investigates trends in free-flow travel 2017 legislation that increased posted from 55 65 mph 943 mi rural Michigan. Speed data were collected for over 46,000 at...

10.1177/03611981211019732 article EN Transportation Research Record Journal of the Transportation Research Board 2021-07-27

<p>Cracks considerably reduce the life span of pavement surfaces. Currently, there is a need for development robust automated distress evaluation systems that comprise low-cost crack detection method performing fast and cost-effective roadway health monitoring practices. Most current methods are costly have labor-intensive learning processes, so they not suitable small local-level projects with limited resources or only usable specific types.</p> <p>This paper proposes new...

10.31124/advance.13601339.v1 preprint EN cc-by 2021-01-19

Research was conducted at a freeway exit ramp with significant horizontal curvature to evaluate the effectiveness of dynamic speed feedback signs (DSFS) as reduction countermeasure. Several aspects DSFS were evaluated, including display size, border type, lateral installation position, and vehicle detection range. Three different full-matrix utilized, which included: 15-inch panel yellow border, 18-inch no border. Each sign individually installed tested identical locations near start curve,...

10.31224/osf.io/enfk6 preprint EN 2021-10-02
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