Estimation of bridge surface profile from moving vehicle accelerations by means of moving force identification - an experimental field study

2019 ◽  
Vol 3 (3/4) ◽  
pp. 289-309
Author(s):  
Kai Chun Chang ◽  
Chul Woo Kim ◽  
Souichiro Hasegawa ◽  
Shunsuke Nakajima ◽  
Patrick J. McGetrick
Keyword(s):  
Field Study ◽  
Surface Profile ◽  
Force Identification ◽  
Moving Vehicle ◽  
Moving Force ◽  
Experimental Field

Field study on moving force identification

2001 ◽  
Author(s):  
Hung-tin Tommy Chan ◽  
Tak H. Yung ◽  
S. S. Law
Keyword(s):  
Field Study ◽  
Force Identification ◽  
Moving Force

A MOM-Based Algorithm for Identification of Moving Vehicle Loads on Bridges

2006 ◽  
Author(s):  
L. Yu ◽  
T. H. T. Chan ◽  
J. H. Zhu ◽  
M. Z. Chen
Keyword(s):  
Time Domain ◽  
Basis Functions ◽  
Time Domain Method ◽  
Acceptable Solution ◽  
Force Identification ◽  
Moving Vehicle ◽  
Moving Force ◽  
Vehicle Loads ◽  
Ill Conditioning ◽  
Bridge Responses

An improved time domain method (ITDM) is proposed for moving force identification using bridge responses, which aims at an acceptable solution to the ill-conditioning problem that often exists in the inverse problem of moving force identification. Based on the method of moments (MOM) and the theory of moving force identification, the moving forces were described as a combination of whole basis functions, such as orthogonal Legendre polynomials or Fourier series, and were then estimated by solving the new system equations developed based on the basis functions. Under a number of response combination cases, the moving vehicle loads are identified using the ITDM and compared with the existing time domain method (TDM). Further a laboratory study was conducted to evaluate the effect of various parameters on the ITDM. Those parameters include basis function number, mode number, number of measured stations, and CPU executive time of the ITDM. Simulation and experiment results show that the ITDM has higher identification accuracy and robust noise immunity as well as being able to generate an acceptable solution to the ill-conditioning problem to some extent when it is used to identify the moving forces from bridge responses. Meanwhile, the ITDM can lessen the executive CPU time as well as being more flexible when compared with the TDM. This is beneficial to real time analysis of moving force identification in field.

A Field Study On Moving Force Identification

2000 ◽  
Vol 16 (9) ◽  
pp. 1214-1221
Author(s):  
Tommy Hung Tin CHAN ◽  
Siu Seong LAW ◽  
Tak Hung YUNG
Keyword(s):  
Field Study ◽  
Force Identification ◽  
Moving Force

Are leaders with postgraduate degrees perceived to be more transformational? A quasi-experimental field study

2019 ◽  
Vol 40 (2) ◽  
pp. 259-273 ◽  
Author(s):  
Morris Mendelson ◽  
Jasmine Alam ◽  
Chris Cunningham ◽  
Adam Totton ◽  
Carrie Smith
Keyword(s):  
Transformational Leadership ◽  
Field Study ◽  
Positive Relationship ◽  
Master's Degree ◽  
Leadership Qualities ◽  
Content Type ◽  
Experimental Field ◽  
Strong Positive Relationship ◽  
Quasi Experimental ◽  
Master’S Degree

PurposeTransformational leadership has been shown to have a positive impact on a host of employee level and organizational performance indicators. However, little research has sought to understand some of the antecedents of this style of leadership. The purpose of this paper is to examine the link between having a post-secondary education and perceptions of transformational leadership.Design/methodology/approachData were collected from two surveys issued in a mid-sized energy company located on the eastern seaboard of North America. One-way ANOVA comparing employees’ perceptions of transformational leadership exhibited by their supervisors that either did or did not have a post-graduate degree demonstrated a strong, positive relationship between the attainment of a Master’s degree and perceived levels of transformational leadership qualities.FindingsThe findings of this quasi-experimental field study demonstrated a strong, positive relationship between the attainment of a Master’s degree and perceived levels of transformational leadership qualities.Originality/valueThis study is the first of its kind to demonstrate that more educated managers are generally perceived to be more transformational in their leadership style.

Moving force identification based on redundant concatenated dictionary and weighted l1-norm regularization

2018 ◽  
Vol 98 ◽  
pp. 32-49 ◽  
Author(s):  
Chu-Dong Pan ◽  
Ling Yu ◽  
Huan-Lin Liu ◽  
Ze-Peng Chen ◽  
Wen-Feng Luo
Keyword(s):  
L1 Norm ◽  
Force Identification ◽  
Moving Force

Employee Participation: An Experimental Field Study

1975 ◽  
Vol 28 (9) ◽  
pp. 863-884 ◽  
Author(s):  
J. A. Lischeron ◽  
T D. Wall
Keyword(s):  
Field Study ◽  
Employee Participation ◽  
Experimental Field

Moving force identification based on learning dictionary with double sparsity

2022 ◽  
Vol 170 ◽  
pp. 108811
Author(s):  
Zi-Hang Zhang ◽  
Wen-Yu He ◽  
Wei-Xin Ren
Keyword(s):  
Force Identification ◽  
Moving Force

A New Experimental Field Study of the Effects of Explosive Detonation Products on Seismic Radiation

2017 ◽  
Vol 88 (5) ◽  
pp. 1327-1332 ◽  
Author(s):  
Anastasia Stroujkova ◽  
Mark Leidig ◽  
James Lewkowicz ◽  
Timothy Rath ◽  
Timothy Bradstreet ◽  
...  
Keyword(s):  
Field Study ◽  
Detonation Products ◽  
Experimental Field ◽  
Explosive Detonation
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