Implementation of New Ride Quality Specification in Maryland: Incentive-Based Profile Specification

2003 ◽  
Vol 1860 (1) ◽  
pp. 159-167 ◽  
Author(s):  
Peter Stephanos ◽  
Jeffrey Withee ◽  
John Andrews
Keyword(s):  
Business Plan ◽  
Ride Quality ◽  
Software Application ◽  
State Highway ◽  
Clear Identification ◽  
Asphalt Paving ◽  
Construction Specification ◽  
Rolling Wheel ◽  
Phase Out ◽  
Project Personnel

The Maryland State Highway Administration (MDSHA) has developed a new, performance-based construction specification for ride quality. The new specification was developed as a strategy to meet an objective in the MDSHA business plan that requires the percentage of smoother pavements to increase statewide over the next 5 years. The new specification allows the use of inertial profiler testing devices as well as California-style rolling-wheel profilographs and includes incentive- and disincentive-based pay adjustments for asphalt paving. The specification includes an innovative approach to establishing acceptable ride quality values that considers many of the factors that affect the ability to construct a smooth riding surface. In addition, the specification includes clear identification of pay adjustments that are calculated using a software application developed by MDSHA. The new specification is to be included in all projects advertised after July 1, 2001, and implementation involves efforts to train construction project personnel in the use of the specification. Future implementation efforts phase out the use of the California-style profilograph by 2004. The efforts completed to date to develop the new specification are described, and highlights of the new specification are provided.

Comparative Study of Ride Quality Measuring Devices

1998 ◽  
Vol 1643 (1) ◽  
pp. 125-135 ◽  
Author(s):  
Tahar El-Korchi ◽  
John Collura
Keyword(s):  
Comparative Study ◽  
New England ◽  
High Speed ◽  
Ride Quality ◽  
International Roughness Index ◽  
State Highway ◽  
Measuring Devices ◽  
New Construction ◽  
State Highway Agencies ◽  
Accuracy And Repeatability

State highway agencies (SHAs) in New England have an ongoing interest in providing the public with smoother rides. As an incentive to contractors, some SHAs include a bonus and penalty clause for new construction based on profile measurements and smoothness indices. These states are considering the use of high-speed profilers for profile measurements and quality control/quality assurance implementation. Therefore, an assessment of the accuracy and repeatability of these devices is essential. A comparative study of high-speed profilers owned by the New England SHAs was conducted in Worcester, Massachusetts. Two sites were profiled using the dipstick and the high-speed profiling devices. Statistical analysis of International Roughness Index measurements were used for evaluation of precision and bias, profiler speed, and sensor type. The repeatability for the profilers was good, especially for combined wheel paths (standard deviation between 0.016 and 0.079 m/km). The accuracy for the profilers varied depending on profiler type.

The Lemonade Stand: A Teaching Case for Developing an Information System for the Revenue Process

2006 ◽  
Vol 1 (1) ◽  
pp. 5-10 ◽  
Author(s):  
Brad A. Schafer ◽  
Kathy Hurtt
Keyword(s):  
Information System ◽  
Internal Control ◽  
Database Design ◽  
Business Plan ◽  
Background Information ◽  
Design Data ◽  
Software Application ◽  
Hands On ◽  
Accounting Software

For this case, each student assumes the role of an accountant and system designer developing a company's accounting software application. The student is provided with company background information and relevant revenue processes for Schafer Lemonade Stand Company. Using a relatively simple business plan, each student documents the system and designs and implements a computerized application to record and report all of the necessary information for the revenue process of the business. By completing the requirements of the case, the student integrates the concepts of database design (data modeling), walkthrough documentation (flowcharting), hands-on development (creating tables, forms, queries, and reports), and considers key internal control concepts for accounting processes.

Measurement of Pavement Treatment Macrotexture and Its Effect on Bicycle Ride Quality

2015 ◽  
Vol 2525 (1) ◽  
pp. 43-53 ◽  
Author(s):  
Hui Li ◽  
John Harvey ◽  
Zhang Chen ◽  
Yuan He ◽  
Thomas J. Holland ◽  
...  
Keyword(s):  
Cost Effective ◽  
Test Methods ◽  
Surface Treatments ◽  
Ride Quality ◽  
California Department ◽  
Statistical Correlations ◽  
State Highway ◽  
Chip Seal ◽  
The Cost ◽  
Treatment Designs

This paper summarizes the results of measurements of macrotexture on a set of California Department of Transportation (Caltrans) and local government pavement surface treatments and their correlation with survey results of bicycle vibration and ride quality on the same sections. The test sections that were used for the bicycle vibration and ride quality measurements included various surface treatments placed on an existing chip seal on SR-198 in Monterey County, a chip seal on SR-1 in San Luis Obispo County, and several other sections with various textures and roughness levels on other state highway and county road sections. Macrotexture was measured in mean profile depth (MPD). Three test methods were used to measure MPD: the sand patch, the laser texture scanner, and the inertial profiler. Presented are statistical correlations between macrotexture, roughness [according to the international roughness index (IRI)], bicycle vibration, and bicycle ride quality for the surveyed treatment sections. Conclusions are presented for MPD values measured on road sections with different treatment designs and for the variability of MPD found between sections built with the same chip seal aggregate grading. Correlations between bicycle vibration and MPD are presented, along with correlations between MPD, IRI, bicycle vibration, and bicyclists' perception of ride quality and pavement acceptability for bicycle use. This study's results can assist Caltrans and other road owners considering gradation when continuing to use the cost-effective chip seal treatment to preserve their pavements while maintaining a bicycle-friendly surface.

Alternative Solvent for Reducing Health and Environmental Hazards in Extracting Asphalt: An Evaluation

2000 ◽  
Vol 1712 (1) ◽  
pp. 79-85 ◽  
Author(s):  
Holly Collins-Garcia ◽  
Mang Tia ◽  
Reynaldo Roque ◽  
Bouzid Choubane
Keyword(s):  
Ozone Depletion ◽  
Asphalt Binders ◽  
Department Of Transportation ◽  
Control Programs ◽  
State Highway ◽  
Florida Department ◽  
Trade Name ◽  
Asphalt Paving ◽  
Environmentally Sound ◽  
State Highway Agencies

Trichloroethylene is a solvent currently used by the Florida Department of Transportation (FDOT) and many state highway agencies for separation of asphalt binders from asphalt paving mixtures in their quality control programs. However, it has been proved that trichloroethylene contributes to ozone depletion, and it is also known to be a carcinogen. The goal of the present study was to determine whether a more environmentally sound and less hazardous solvent could be used for this purpose. The solvent investigated is an n-propyl bromide with the trade name EnSolv. Preliminary studies show that it is safer than many other solvents available today. The study was performed to determine whether EnSolv could be a substitute for trichloroethylene without changing current testing methods. The tests performed included the asphalt solubility test, extraction and recovery of asphalt binders from mixtures, and penetration and viscosity tests with the recovered binders. The results of the study showed that EnSolv could be a suitable replacement for trichloroethylene. In addition, EnSolv could also be recycled and reused in the extraction and recovery procedures.

Factors Affecting Overlay Ride Quality

2000 ◽  
Vol 1712 (1) ◽  
pp. 58-65
Author(s):  
Kevin K. McGhee
Keyword(s):  
Asphalt Concrete ◽  
Time Of Day ◽  
Ride Quality ◽  
Factors Affecting ◽  
Original Surface ◽  
State Highway ◽  
The Subject ◽  
Asphalt Overlays ◽  
Special Provision ◽  
Highway System

A study was conducted to identify the predominant factors that affect the achievable smoothness of asphalt overlays. The subject was approached from the perspective of a contracting entity (state highway agency). The basis of the study was a roughness survey that incorporated 4270 lane-km (2,650 lane-mi) and two full construction seasons with hot-mix asphalt concrete paving. Among the variables found to be related to the achievable smoothness were the functional classification (highway system), original surface roughness, and a special provision for smoothness. Variables that were found to be not significantly related to the smoothness achieved included surface mix type, the application of additional structural layers, the use of milling, and time-of-day restrictions on construction activities (i.e., nighttime paving).

Moving From Interprofessional Education Toward Interprofessional Practice: Bridging the Translation Gap

2019 ◽  
Vol 4 (5) ◽  
pp. 971-976
Author(s):  
Imran Musaji ◽  
Trisha Self ◽  
Karissa Marble-Flint ◽  
Ashwini Kanade
Keyword(s):  
Interprofessional Education ◽  
Interprofessional Collaboration ◽  
Evaluation Model ◽  
Implementation Strategies ◽  
Future Research ◽  
Successful Implementation ◽  
Interprofessional Practice ◽  
Translational Model ◽  
Key Stakeholders ◽  
Clear Identification

Purpose The purpose of this article was to propose the use of a translational model as a tool for identifying limitations of current interprofessional education (IPE) research. Translational models allow researchers to clearly define next-step research needed to translate IPE to interprofessional practice (IPP). Method Key principles, goals, and limitations of current IPE research are reviewed. A popular IPE evaluation model is examined through the lens of implementation research. The authors propose a new translational model that more clearly illustrates translational gaps that can be used to direct future research. Next steps for translating IPE to IPP are discussed. Conclusion Comprehensive reviews of the literature show that the implementation strategies adopted to date have fostered improved buy-in from key stakeholders, as evidenced by improved attitudes and perceptions toward interprofessional collaboration/practice. However, there is little evidence regarding successful implementation outcomes, such as changed clinician behaviors, changed organizational practices, or improved patient outcomes. The authors propose the use of an IPE to IPP translational model to facilitate clear identification of research gaps and to better identify future research targets.

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