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An Assessment and Framework of Management Science Applications for TxDOT

Description: Report discussing the results of a project in which researchers implemented a systematic approach to identify the domains within the Texas Department of Transportation (TxDot) where Operations Research and Management Science (OR/MS) techniques could lead to substantial improvements.
Date: October 2011
Creator: Waller, S. Travis; Walewski, John; Chang, Carlos; Fajardo, David; Lasdon, Leon; Montes, Edith et al.
Item Type: Refine your search to only Report

Assessment of Osmotic Mechanisms Pairing Desalination Concentrate and Wastewater Treatment

Description: Report discussing the findings of a combined laboratory/feasibility study meant to evaluate the possible recovery of wastewater, through the use of reverse osmosis (RO) concentrate as a draw solution in a forward osmosis (FO) application. "This document examines some of the factors involved in the use of osmotic mechanisms to recover high quality water from wastewater effluents, as well as provides initial guidance on performance and costs that may be associated with future implementation of … more
Date: October 2011
Creator: Gomez, Juan D.; Huehmer, Robert P. & Cath, Tzahi
Item Type: Refine your search to only Report

An Audit Report on the Information and Communications Technology Cooperative Contracts Program at the Department of Information Resources

Description: Report of the Texas State Auditor's Office related to determining whether the Department of Information Resources sets the administrative fee for the Information and Communications Technology Cooperative Contracts Program (Program) at a reasonable amount sufficient to recover the costs of the Program and complies with state laws, rules, and Department policies and procedures related to the administrative fee; whether the Department accurately and completely records the Program's financial trans… more
Date: October 2011
Creator: Texas. Office of the State Auditor.
Item Type: Refine your search to only Report

Best Practice for Using RAS in HMA

Description: "The use of recycles asphalt shingles (RAS) in hot-mix asphalt (HMA) mixtures has the potential to significantly reduce the cost of asphalt paving mixes while conserving energy and preserving the environment. This report documents the best practices for the use of RAS in HMA in terms of Ras processing, characterizing the processed RAS (binder content,gradations, and performance grad [PG]), RAS mix design, production, and field construction."
Date: October 2011
Creator: Zhou, Fujie; Button, Joe W. & Epps, Jon
Item Type: Refine your search to only Report

CAM Mix Design With Local Aggregates

Description: "This study provides revised mix design recommendations for crack attenuating mixtures (CAM) with local aggregates. The use of lower quality aggregates is cost beneficial but limits the application of these mixes in terms of reduced performance. Aggregate guidelines and aggregate quality criteria are provided to enhance the rutting and cracking performance of these mixes. The mix design recommendations as well as aggregate guidelines and quality criteria provided in the report are based on la… more
Date: October 2011
Creator: Smit, Andrè de Fortier; Prasad, Sivaram; Prozzi, Jorge Alberto & Tahmoressi, Maghsoud
Item Type: Refine your search to only Report

Characterization of Exhaust Emissions From Heavy-Duty Diesel Vehicles in the Houston-Galveston-Brazoria Area

Description: "For this study, a total of 30 heavy-duty diesel vehicles (HDDVs) were selected from City of Houston (COH) fleet based on opacity testing for HEs and random selection for non-HEs. With the selected 30 vehicles, driving and idling emission testing were performed to characterize their emissions with respect to vehicle classes, types (HE or non-HE), and model years."
Date: October 2011
Creator: Johnson, Jeremy D.; Lee, Doh-Won; Farzaneh, Reza; Zietsman, Josias & Yu, Lei
Item Type: Refine your search to only Report

College Admissions Testing of Graduating Seniors in Texas High Schools Class of 2010

Description: "This report examines SAT and ACT participation and performance in Texas for the class of 2010. Statewide examination results for students in Texas public schools and for students in Texas public and nonpublic schools combined are presented. Data are provided by race/ethnicity, gender, and economic status. The report also provides descriptions of the SAT and ACT examinations, along with a brief discussion of policy related to the examinations. In addition, the report discusses the use of SAT an… more
Date: October 2011
Creator: Texas Education Agency. Division of Research and Evaluation.
Item Type: Refine your search to only Report

Continuous prestressed concrete girder bridges. Volume 1, Literature review and preliminary designs

Description: "The Texas Department of Transportation (TxDOT) is currently designing typical highway bridge structures as simply supported using standard precast, pretension-ed girders. TxDOT is interested in developing additional economical design alternatives for longer span bridges, through the use of the continuous precast, pretension-ed concrete bridge structures that use spliced girder technology. The objectives of this portion of the study are to evaluate the current stat-of-the-art and practice relev… more
Date: October 2011
Creator: Mander, John B.; Parkar, Anagha S. & Hueste, Mary Beth D.
Item Type: Refine your search to only Report

Developing a mixture design specification for flexible base construction

Description: "In the Texas Department of Transportation (TxDOT), flexible base producers typically generate large stockpiles of material exclusively for TxDOT projects. This large "state-only" inventory often maintained by producers, along with time requirements for testing and reduced manpower within TxDOT offices, resulted in this project's investigation into a mixture-design specification for flexible base. The goals of this project are to develop a flexible base specification that reduces TxDOT's burden… more
Date: October 2011
Creator: Epps, Jon A.; Sebesta, Stephen; Sahin, Hakan; Button, Joe; Luo, Rong & Lytton, Robert
Item Type: Refine your search to only Report
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