Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Engineering
Hydrogeologic Characterization Of A Till Mantled Leaky Fractured Bedrock Aquifer, William Lukas
Hydrogeologic Characterization Of A Till Mantled Leaky Fractured Bedrock Aquifer, William Lukas
Geotechnical Engineering Masters Projects
In glaciated areas till can serve as a leaky aquitard for fractured bedrock aquifers. The characterization of a leaky till mantled fractured bedrock aquifer is presented. Multiple high resolution data sets were collected in response to unprecedented changes in the hydraulic head at a research site in eastern Massachusetts. Local scale aquifer and aquitard hydraulic conductivity, transmissivity and storativity values are determined through the analysis of purge recovery tests using Ostendorf and DeGroot (2010) and Cooper et al (1967) theories. The local scale parameters are in turn used to determine large scale aquifer transmissivity and storativity through an analysis of …
Operational And Safety-Based Analyses Of Varied Toll Lane Configurations, Ian A. Mckinnon
Operational And Safety-Based Analyses Of Varied Toll Lane Configurations, Ian A. Mckinnon
Masters Theses 1911 - February 2014
Toll plaza operation is a critical component of roadway operations throughout the United States, as tolls provide both revenue for expansion and opportunity for demand management. Originally cash or physical currency based, tolling has morphed to meet the twentieth century demand in terms of throughput and efficiency in the form of electronic toll collection. Electronic tolling has introduced a new form of driver decision making at toll plazas due to the additional payment choice. Despite the user convenience these facilities provide to consumers, this form of collection has not come without safety and operational concerns. Confusion at the toll plaza, …