Full-scale investigation of wind-induced vibrations of a mast-arm traffic signal structure

2015 ◽  
Vol 20 (3) ◽  
pp. 405-422 ◽  
Author(s):  
Michelle Riedman ◽  
Hung Nguyen Sinh ◽  
Christopher Letchford ◽  
Michael O'Rourke
Keyword(s):  
Traffic Signal ◽  
Full Scale ◽  
Signal Structure ◽  
Traffic Signal Structure

scholarly journals Traffic Controller Based on Density with RF Remote Override

2019 ◽  
Vol 8 (6S4) ◽  
pp. 674-678
Keyword(s):  
Remote Control ◽  
Traffic Signal ◽  
Android Application ◽  
Pathway Diagram ◽  
Signal Structure ◽  
Emergency Condition ◽  
Ir Sensors ◽  
Traffic Signal Structure

The endeavor hopes to give a sensible response for the traffic signal structure to deny the standard sign timings during emergency regularly. It happens when there is an emergency condition like crisis vehicle, fire division stuck in flood hour gridlock; they imagine that need should go first. Other than the need rises when there develops high thickness at a particular course. Thusly the system uses an android application device remote control that invalidations the sign timings by essentially offering green piece of information in the vehicle course and red sign for all others. The endeavor uses a microcontroller of 8051 family that is interfaced with the IR sensors and photodiodes balanced in discernable pathway diagram over the store for seeing the thickness. The thickness is surveyed in three stand-out ways low, medium and high as appeared by which the timings are appropriated for sign. The managing supplanted is done using RF advance.

Wind-induced traffic signal structure response: Experiments and reduction via helical arm strakes

2014 ◽  
Vol 76 ◽  
pp. 245-254 ◽  
Author(s):  
Kyle T. Wieghaus ◽  
Stefan Hurlebaus ◽  
John B. Mander ◽  
Gary T. Fry
Keyword(s):  
Traffic Signal ◽  
Structure Response ◽  
Signal Structure ◽  
Traffic Signal Structure

Novel Hidden Pounding Tuned Mass Damper for Vibration Control of a Cantilevered Traffic Signal Structure

2020 ◽  
Vol 146 (3) ◽  
pp. 04020005 ◽  
Author(s):  
Ning Zhao ◽  
Guoqing Huang ◽  
Ruili Liu ◽  
Peng Zhang ◽  
Chengwen Lu ◽  
...  
Keyword(s):  
Vibration Control ◽  
Tuned Mass Damper ◽  
Traffic Signal ◽  
Signal Structure ◽  
Mass Damper ◽  
Traffic Signal Structure

Full-scale experiments of cantilever traffic signal structures

2013 ◽  
Vol 17 (1) ◽  
pp. 21-41 ◽  
Author(s):  
Hector J. Cruzado ◽  
Chris Letchford
Keyword(s):  
Traffic Signal ◽  
Full Scale

Relation of Statistically Significant, Abnormal, and Typical WAIS-R VIQ-PIQ Discrepancies to Full Scale IQs

2000 ◽  
Vol 16 (2) ◽  
pp. 107-114 ◽  
Author(s):  
Louis M. Hsu ◽  
Judy Hayman ◽  
Judith Koch ◽  
Debbie Mandell
Keyword(s):  
Graphical Method ◽  
The United States ◽  
Full Scale ◽  
True Score ◽  
Absolute Value ◽  
Normative Population ◽  
The Us ◽  
The Mean ◽  
And Performance ◽  
Quadratic Models

Summary: In the United States' normative population for the WAIS-R, differences (Ds) between persons' verbal and performance IQs (VIQs and PIQs) tend to increase with an increase in full scale IQs (FSIQs). This suggests that norm-referenced interpretations of Ds should take FSIQs into account. Two new graphs are presented to facilitate this type of interpretation. One of these graphs estimates the mean of absolute values of D (called typical D) at each FSIQ level of the US normative population. The other graph estimates the absolute value of D that is exceeded only 5% of the time (called abnormal D) at each FSIQ level of this population. A graph for the identification of conventional “statistically significant Ds” (also called “reliable Ds”) is also presented. A reliable D is defined in the context of classical true score theory as an absolute D that is unlikely (p < .05) to be exceeded by a person whose true VIQ and PIQ are equal. As conventionally defined reliable Ds do not depend on the FSIQ. The graphs of typical and abnormal Ds are based on quadratic models of the relation of sizes of Ds to FSIQs. These models are generalizations of models described in Hsu (1996) . The new graphical method of identifying Abnormal Ds is compared to the conventional Payne-Jones method of identifying these Ds. Implications of the three juxtaposed graphs for the interpretation of VIQ-PIQ differences are discussed.

A Modification of the Payne-Jones Method of Identifying Abnormal Differences in WISC-R Performance and Verbal IQ's

1996 ◽  
Vol 12 (1) ◽  
pp. 27-32 ◽  
Author(s):  
Louis M. Hsu
Keyword(s):  
Full Scale ◽  
True Score ◽  
Verbal Iq ◽  
Score Difference ◽  
The Difference ◽  
And Performance

The difference (D) between a person's Verbal IQ (VIQ) and Performance IQ (PIQ) has for some time been considered clinically meaningful ( Kaufman, 1976 , 1979 ; Matarazzo, 1990 , 1991 ; Matarazzo & Herman, 1985 ; Sattler, 1982 ; Wechsler, 1984 ). Particularly useful is information about the degree to which a difference (D) between scores is “abnormal” (i.e., deviant in a standardization group) as opposed to simply “reliable” (i.e., indicative of a true score difference) ( Mittenberg, Thompson, & Schwartz, 1991 ; Silverstein, 1981 ; Payne & Jones, 1957 ). Payne and Jones (1957) proposed a formula to identify “abnormal” differences, which has been used extensively in the literature, and which has generally yielded good approximations to empirically determined “abnormal” differences ( Silverstein, 1985 ; Matarazzo & Herman, 1985 ). However applications of this formula have not taken into account the dependence (demonstrated by Kaufman, 1976 , 1979 , and Matarazzo & Herman, 1985 ) of Ds on Full Scale IQs (FSIQs). This has led to overestimation of “abnormality” of Ds of high FSIQ children, and underestimation of “abnormality” of Ds of low FSIQ children. This article presents a formula for identification of abnormal WISC-R Ds, which overcomes these problems, by explicitly taking into account the dependence of Ds on FSIQs.

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