Exploratory Study to Use Traffic Speed Deflectometers (TSD) for Project-Level Pavement Evaluations

1999 ◽

Vol 03 (01) ◽

pp. 91-109 ◽

Cited By ~ 3

Author(s):

GARY S. LYNN

Keyword(s):

Product Development ◽

New Product Development ◽

Exploratory Study ◽

New Product ◽

Radical Innovation ◽

Extreme Form ◽

A Company ◽

Project Level

The concept of corporate vision has been receiving considerable attention in the strategy scholarship. A clear and lofty organisational vision can provide direction to a company and can positively impact on its ability to succeed. Yet research on vision at the project level has been curiously lacking. The purpose of this research is to define project vision, discuss its components and its impact on successful new product development. By studying the vision on a series of innovations at one company (IBM), we identified several components of an effective vision that include clarity, agreement, support and stability. This article concludes with an assessment of the applicability of these vision components for the extreme form of innovation called radical innovation.

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Visco-Elastic Back-Calculation of Traffic Speed Deflectometer Measurements

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/0361198118823500 ◽

2019 ◽

Vol 2673 (12) ◽

pp. 439-448 ◽

Cited By ~ 3

Author(s):

Christoffer P. Nielsen

Keyword(s):

Calculation Procedure ◽

Falling Weight Deflectometer ◽

Calculation Algorithm ◽

Structural Evaluation ◽

Driving Speed ◽

Back Calculation ◽

Traffic Speed ◽

Falling Weight ◽

Calculation Procedures ◽

Project Level

The traffic speed deflectometer (TSD) has proven a valuable tool for network level structural evaluation. At the project level, however, the use of TSD data is still quite limited. An obstacle to the use of TSD at the project level is that the standard approaches to back-calculation of pavement properties are based on the falling weight deflectometer (FWD). The FWD experiment is similar, but not equivalent, to the TSD experiment, and therefore it is not straightforward to apply the traditional FWD back-calculation procedures to TSD data. In this paper, a TSD-specific back-calculation procedure is presented. The procedure is based on a layered linear visco-elastic pavement model and takes the driving speed of the vehicle into account. This is in contrast to most existing back-calculation procedures, which treat the problem as static and the pavement as purely elastic. The developed back-calculation procedure is tested on both simulated and real TSD data. The real TSD measurements exhibit significant effects of damping and visco-elasticity. The back-calculation algorithm is able to capture these effects and yields model fits in excellent agreement with the measured values.

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A hospital clerkship program for dental students: an exploratory study

Journal of Dental Education ◽

10.1002/j.0022-0337.1969.33.2.tb00173.x ◽

1969 ◽

Vol 33 (2) ◽

pp. 224-229

Author(s):

EA Stuebner ◽

RP Johnson

Keyword(s):

Exploratory Study ◽

Dental Students

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Classifying Disfluencies in Preschool- and School-Age Spanish–English Bilinguals Who Do Not Stutter: An Exploratory Study

Perspectives of the ASHA Special Interest Groups ◽

10.1044/2019_persp-19-00164 ◽

2020 ◽

Vol 5 (1) ◽

pp. 119-130

Author(s):

Raúl Rojas ◽

Farzan Irani

Keyword(s):

Exploratory Study ◽

Evidence Base ◽

Medium Effect ◽

Bilingual Children ◽

Linear Regression Models ◽

Cross Sectional ◽

Total Percentage ◽

Narrative Production ◽

Language Measures ◽

Mean Length Of Utterance

Purpose This exploratory study examined the language skills and the type and frequency of disfluencies in the spoken narrative production of Spanish–English bilingual children who do not stutter. Method A cross-sectional sample of 29 bilingual students (16 boys and 13 girls) enrolled in grades prekindergarten through Grade 4 produced a total of 58 narrative retell language samples in English and Spanish. Key outcome measures in each language included the percentage of normal (%ND) and stuttering-like (%SLD) disfluencies, percentage of words in mazes (%MzWds), number of total words, number of different words, and mean length of utterance in words. Results Cross-linguistic, pairwise comparisons revealed significant differences with medium effect sizes for %ND and %MzWds (both lower for English) as well as for number of different words (lower for Spanish). On average, the total percentage of mazed words was higher than 10% in both languages, a pattern driven primarily by %ND; %SLDs were below 1% in both languages. Multiple linear regression models for %ND and %SLD in each language indicated that %MzWds was the primary predictor across languages beyond other language measures and demographic variables. Conclusions The findings extend the evidence base with regard to the frequency and type of disfluencies that can be expected in bilingual children who do not stutter in grades prekindergarten to Grade 4. The data indicate that %MzWds and %ND can similarly index the normal disfluencies of bilingual children during narrative production. The potential clinical implications of the findings from this study are discussed.

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