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Full-Text Articles in Engineering
Road Rescue Implements A Continuous Process Improvement Framework, John Olson, Paul Savory
Road Rescue Implements A Continuous Process Improvement Framework, John Olson, Paul Savory
John Olson
Continuous improvement programs traditionally focus on making small incremental improvements to a system. Unfortunately, their success can be limited due to the rapid changing environment within which most small companies operate. Improvement efforts should be flexible enough to capitalize on incremental and radical changes to a system. This paper presents a case analysis of how Road Rescue, an ambulance manufacturer, uses a continuous improvement framework to capitalize on both radical and incremental improvement opportunities. Results include a 10% increase in throughput, reduced cycle time of 44%, increased customer satisfaction, and higher quality.
Geometric And Operational Improvements At Continuous Flow Intersections To Enhance Pedestrian Safety, Angela Coates, Ping Yi, Peng Liu, Xinlu Ma
Geometric And Operational Improvements At Continuous Flow Intersections To Enhance Pedestrian Safety, Angela Coates, Ping Yi, Peng Liu, Xinlu Ma
Ping Yi
Traditional four-phase, four-legged intersections may operate inefficiently under high traffic demand. Innovative geometric design configurations for intersections allow more efficient traffic operations and can significantly increase vehicle throughput. Continuous flow intersections (CFIs), also referred to as displaced left-turn intersections, use an unconventional lane arrangement to maximize the vehicular throughput. This arrangement involves displacing left-turn lanes across opposing through traffic before reaching the main intersection. Such an alteration allows left-turning and through vehicles to proceed simultaneously, and both intersection capacity and delay are improved as a result. Numerous studies have validated these operational improvements, but pedestrian accommodation often is low because …
Multi-Barge Flotilla Impact Forces On Bridges, Peng Yuan, Issam Harik, Michael Davidson
Multi-Barge Flotilla Impact Forces On Bridges, Peng Yuan, Issam Harik, Michael Davidson
Issam E. Harik
The current AASHTO equations for barge impact loads are based on scale models of barges, and may not accurately predict impact loads on bridge piers. The results of this study produce more realistic flotilla impact design loads, potentially leading to a reduction in construction costs of bridges over navigable waterways. The objectives of this study are: (1) To conduct theoretical finite element analysis on various types of flotillas impacting bridge piers. The flotillas and the respective barges will be of the type commonly traversing Kentucky’s waterways; and (2) To generate design equations for barge/flotilla impact loads. The study concludes the …
Equivalent Barge And Flotilla Impact Forces On Bridge Piers, Peng Yuan, Issam Harik
Equivalent Barge And Flotilla Impact Forces On Bridge Piers, Peng Yuan, Issam Harik
Issam E. Harik
Bridge piers located in navigable inland waterways are designed to resist impact forces from barges and flotillas in addition to other design considerations (e.g., scour, dead and live loads, etc.). The primary design tool for estimating these forces is the AASHTO Guide Specification which provides a simple hand calculation method for determining an “equivalent impact force”. The simplicity comes at a cost of excluding the effect of the pier shape, impact duration, and interaction between barges in a flotilla. The objective of this report is to present a hand calculation method for determining barge or flotilla equivalent static impact forces …
Laser Assisted Embedding Of Nanoparticles Into Metallic Materials, Dong Lin, Sergey Suslov, Chang Ye, Yiliang Liao, C. Liu, Gary Cheng
Laser Assisted Embedding Of Nanoparticles Into Metallic Materials, Dong Lin, Sergey Suslov, Chang Ye, Yiliang Liao, C. Liu, Gary Cheng
Dr. Chang Ye
This paper reports a methodology of half-embedding nanoparticles into metallic materials. Transparent and opaque nanoparticles are chosen to demonstrate the process of laser assisted nanoparticle embedding. Dip coating method is used to coat transparent or opaque nanoparticle on the surface of metallic material. Nanoparticles are embedded into substrate by laser irradiation. In this study, the mechanism and process of nanoparticle embedding are investigated. It is found both transparent and opaque nanoparticles embedding are with high densities and good uniformities.
An Intelligent Systems Approach For An Ultrasonic Based Neuro-Navigation System, Jennifer Akers, Sanjeevi Chitikeshi, Ajay Mahajan, Tsuchin Chu, Etienne Witte, Sumeer Lal
An Intelligent Systems Approach For An Ultrasonic Based Neuro-Navigation System, Jennifer Akers, Sanjeevi Chitikeshi, Ajay Mahajan, Tsuchin Chu, Etienne Witte, Sumeer Lal
Dr. Ajay Mahajan
This paper shows the feasibility of using an intelligent systems approach to increase the accuracy of a 3D ultrasonic position estimation system for real-time image guided neurosurgery. Current image guided systems use camera based technology that is space-intensive, have an accuracy of about 1.0–2.0 mm, and are prone to occasional failures. The 3D system presented in this paper eliminates the space intensive camera, has an accuracy of around 1.0 mm in the operating range of about 200–400 mm, makes the system independent of line-of-sight occlusion problems, and is expected to pave the way for accurate fusion models of MRI and …
Monte Carlo Simulation Of Tri-Functional Branching And Tetra-Functional Crosslinking In Emulsion Polymerization Of Butadiene, Esmaiel Jabbari
Monte Carlo Simulation Of Tri-Functional Branching And Tetra-Functional Crosslinking In Emulsion Polymerization Of Butadiene, Esmaiel Jabbari
Esmaiel Jabbari
No abstract provided.