scholarly journals Literature review for Texas Department of Transportation Research Project 0-4695: Guidance for design in areas of extreme bed-load mobility, Edwards Plateau, Texas

2005 ◽  
Author(s):  
Franklin T. Heitmuller ◽  
William H. Asquith ◽  
Xing Fang ◽  
David B. Thompson ◽  
Keh-Han Wang
Keyword(s):  
Literature Review ◽  
Bed Load ◽  
Department Of Transportation ◽  
Edwards Plateau ◽  
Research Project ◽  
Texas Department ◽  
Transportation Research

Super-Accelerated Testing of Flexible Pavement with Stationary Dynamic Deflectometer

2000 ◽  
Vol 1716 (1) ◽  
pp. 98-107 ◽  
Author(s):  
Kenneth H. Stokoe ◽  
James A. Bay ◽  
Brent L. Rosenblad ◽  
Michael R. Murphy ◽  
Kenneth W. Fults ◽  
...  
Keyword(s):  
Cost Effective ◽  
Accelerated Testing ◽  
Stationary Mode ◽  
Fort Worth ◽  
Department Of Transportation ◽  
Texas Department ◽  
Effective Manner ◽  
Pavement Recycling ◽  
Loading System ◽  
Transportation Research

The Texas Department of Transportation (TxDOT), in partnership with the Center for Transportation Research, has implemented the Texas mobile load simulator (TxMLS) as a tool for accelerated testing of in-service pavements. Although the TxMLS has been used successfully to test in-service pavements in the Yoakum and Fort Worth districts, the fact that only one TxMLS machine exists limits the number of accelerated pavement tests (APT) that can be performed. Therefore, TxDOT is evaluating a modification of the rolling dynamic deflectometer (RDD) for use as a super-accelerated pavement tester. In this application, the truck-mounted dynamic loading system is operated in a stationary mode, with the loading rollers and rolling sensors of the RDD removed from operation. The servohydraulic actuator is used for application of harmonic loading to a wheel footprint on the pavement surface. Hundreds of thousands of load repetitions are applied in a matter of hours; hence the designation as super-accelerated testing. This stationary dynamic deflectometer (SDD) is being studied as a possible tool for use in expanding TxDOT’s APT program. The SDD may allow TxDOT to increase, in a cost-effective manner, the number of accelerated tests that can be performed. Preliminary tests have been performed with the TxMLS and SDD on two different pavement recycling strategies constructed on the northbound and southbound lanes of US-281 in the Fort Worth District. That the same conclusion was reached about the relative performance of the test sections with both machines indicates the potential usefulness of the SDD.

Development of a Tool for Utility Conflict Data Management in the Project Development Process

2008 ◽  
Vol 2060 (1) ◽  
pp. 153-161
Author(s):  
Edgar Kraus ◽  
Cesar Quiroga ◽  
Jerry Le
Keyword(s):  
Construction Projects ◽  
Data Exchange ◽  
Development Process ◽  
Prototype System ◽  
Department Of Transportation ◽  
Project Development ◽  
Design Changes ◽  
Texas Department ◽  
Highway Facilities ◽  
Transportation Research

A critical process for the timely development and delivery of highway construction projects is the early identification and depiction of utility interests that may interfere with proposed highway facilities. The effective management of such utility interests or conflicts involves utility adjustment (or design changes), inspection, and documentation. The large number of stakeholders and the magnitude of the process result in enormous amounts of data. Despite substantial data exchange among utility accommodation stakeholders, few standards exist for exchange and management of utility data in the project development process. With sample data provided by the Texas Department of Transportation, research described in this paper addresses the issue of utility conflict management by analyzing specific utility conflict data flows and data needs of stakeholders. The paper presents the product of this analysis, which is a prototype system for managing utility conflict data called the Utility Accommodation and Conflict Tracker.

scholarly journals Implicit and explicit attitudes in transportation research: A literature review

2021 ◽  
Vol 77 ◽  
pp. 87-101
Author(s):  
Jeremías David Tosi ◽  
Narelle Haworth ◽  
Carlos M. Díaz-Lázaro ◽  
Fernando Martín Poó ◽  
Rubén Daniel Ledesma
Keyword(s):  
Literature Review ◽  
Explicit Attitudes ◽  
Transportation Research ◽  
Implicit And Explicit ◽  
Implicit And Explicit Attitudes

scholarly journals Titus Phase Archeology at the S. Stockade Site (41TT865) on Tankersley Creek, Titus County, Texas

2003 ◽  
Author(s):  
Timothy K. Perttula ◽  
Bo Nelson ◽  
LeeAnna Schniebs
Keyword(s):  
Department Of Transportation ◽  
The West ◽  
Standing Water ◽  
Texas Department ◽  
Small Rise ◽  
Dense Concentration

The S. Stockade site was discovered on a small rise (330 feet amsl) in the Tankersley Creek floodplain during a recent archeological survey for the Texas Department of Transportation. Tankersley Creek is a southward-flowing tributary to Big Cypress Creek, and enters that creek’s floodplain a few miles below the Lake Bob Sandlin dam. There is a dense concentration of prehistoric archeological sites throughout the Tankersley Creek valley, particularly post-A.D. 800 Caddo Indian sites. This paper discusses the archeology of the S. Stockade site, a Late Caddoan Titus phase settlement. The rise at the S. Stockade site is grass-covered (with a surface visibility of less than 10%), except along the eroded slopes, where the clay B-horizon subsoil is exposed. The old creek channel immediately to the west of the rise has recently been channelized, and between the rise and the channelized creek are several low-lying marshy areas with standing water.

Secret Lives of Containers: Evidence from Texas

2003 ◽  
Vol 1833 (1) ◽  
pp. 3-10 ◽  
Author(s):  
Jolanda Prozzi ◽  
Kellie Spurgeon ◽  
Robert Harrison
Keyword(s):  
United States ◽  
State Level ◽  
The United States ◽  
University Of Texas ◽  
Texas Department ◽  
Freight Planning ◽  
Global Movements ◽  
Transportation Research ◽  
Trucking Companies ◽  
Container Manufacturing

In 2000, the Texas Department of Transportation contracted with the Center for Transportation Research (CTR) at the University of Texas, Austin, to analyze containerized freight movements in Texas. Although aggregate data are available on the container sector and global movements, including data on container manufacturing, steamship companies, container routes, vessel capacities, and costs and supply chains, little information is available on container movements in the United States. To shippers and those directly involved in the container sector, some data on container movements in the United States—including route choice—are available. However, for those involved in freight planning at the state level, such information remains somewhat of a mystery. To fill this void, the CTR research team sought the assistance of various transportation stakeholders involved in containerized freight movements in an effort to characterize and gain a better understanding of this important and growing component of the freight sector. A total of 31 telephone interviews were conducted, involving 3 major ocean carriers, 12 trucking companies, 8 freight forwarders, 7 container leasing companies, and 1 railroad representative. Questions addressed container ownership, liability at different stages of a movement, benefits of different types of leases, container tracking (state of practice), transfer costs, security risks, and the outcome of a container at the end of its useful life. This study provides planners and those outside the industry with information on this dynamic sector and likely future changes.

Theoretical and Empirical Comparative Analysis on Quantitative and Qualitative Marketing Researches

2015 ◽  
pp. 1712-1730
Author(s):  
Piotr Tarka ◽  
Mirosława Kaczmarek
Keyword(s):  
Qualitative Research ◽  
Comparative Analysis ◽  
Literature Review ◽  
Empirical Research ◽  
Marketing Research ◽  
Research Projects ◽  
Research Project ◽  
Quantitative And Qualitative Research ◽  
Similarities And Differences ◽  
Methodological Aspects

This chapter focuses on the similarities and differences between quantitative and qualitative marketing research projects and the possibilities of combining them in triangulation. The comparative analysis of both types of the research was conducted on the basis of literature review and the empirical research results, which were obtained from the evaluation of usability of Polish bank website. In the following sections, the authors discuss issues such as: 1) specificity of quantitative vs. qualitative marketing research, with regards to the implemented research projects; 2) methodological aspects of quantitative and qualitative research. They compare the selected research and sampling methods. Also, the problems which may occur with reference to quantitative and qualitative marketing research triangulation on different stages of the research project are discussed. Moreover, strengths and weaknesses of triangulation are analyzed. At the end, the example of quantitative and qualitative triangulation in the research project investigating the usability of websites is presented.

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