The Experts below are selected from a list of 700212 Experts worldwide ranked by ideXlab platform
Zhiguo He - One of the best experts on this subject based on the ideXlab platform.
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computationally efficient Modeling of hydro sediment morphodynamic processes using a hybrid local time step global maximum time step
Advances in Water Resources, 2019Co-Authors: Peng Hu, Zhiguo HeAbstract:Abstract A hybrid local time step/global maximum time step (LTS/GMaTS) method is proposed for computationally efficient Modeling of hydro-sediment-morphodynamic processes. The governing equations are numerically solved on unstructured triangular meshes using a well-balanced shock-capturing finite volume method with the HLLC approximate Riemann solver. High computational efficiency is achieved by implementing the LTS to solve equations governing sediment-laden flows (i.e., the hydro-sediment part), and implementing the GMaTS to solve equations governing bed materials (i.e., the morphodynamic part). Two benchmark experimental dam-break flows over erodible beds and one field case of the Taipingkou waterway, Middle Yangtze River, are simulated to demonstrate the high computational efficiency and the satisfactory quantitative accuracy. It is shown that the computational efficiency of the new Model can be faster by an order of magnitude than a Traditional Model of similar type but implementing the global minimum time step (GMiTS). The satisfactory quantitative accuracy of the new Model for the present cases is demonstrated by the negligible L2 norms of water level and bed elevation between the new Model and the Traditional Model, as compared to the L2 norms between the Traditional Model and the measured data.
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Computationally efficient Modeling of hydro-sediment-morphodynamic processes using a hybrid local time step/global maximum time step
Advances in Water Resources, 2019Co-Authors: Peng Hu, Zhiguo HeAbstract:Abstract A hybrid local time step/global maximum time step (LTS/GMaTS) method is proposed for computationally efficient Modeling of hydro-sediment-morphodynamic processes. The governing equations are numerically solved on unstructured triangular meshes using a well-balanced shock-capturing finite volume method with the HLLC approximate Riemann solver. High computational efficiency is achieved by implementing the LTS to solve equations governing sediment-laden flows (i.e., the hydro-sediment part), and implementing the GMaTS to solve equations governing bed materials (i.e., the morphodynamic part). Two benchmark experimental dam-break flows over erodible beds and one field case of the Taipingkou waterway, Middle Yangtze River, are simulated to demonstrate the high computational efficiency and the satisfactory quantitative accuracy. It is shown that the computational efficiency of the new Model can be faster by an order of magnitude than a Traditional Model of similar type but implementing the global minimum time step (GMiTS). The satisfactory quantitative accuracy of the new Model for the present cases is demonstrated by the negligible L2 norms of water level and bed elevation between the new Model and the Traditional Model, as compared to the L2 norms between the Traditional Model and the measured data.
Peng Hu - One of the best experts on this subject based on the ideXlab platform.
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computationally efficient Modeling of hydro sediment morphodynamic processes using a hybrid local time step global maximum time step
Advances in Water Resources, 2019Co-Authors: Peng Hu, Zhiguo HeAbstract:Abstract A hybrid local time step/global maximum time step (LTS/GMaTS) method is proposed for computationally efficient Modeling of hydro-sediment-morphodynamic processes. The governing equations are numerically solved on unstructured triangular meshes using a well-balanced shock-capturing finite volume method with the HLLC approximate Riemann solver. High computational efficiency is achieved by implementing the LTS to solve equations governing sediment-laden flows (i.e., the hydro-sediment part), and implementing the GMaTS to solve equations governing bed materials (i.e., the morphodynamic part). Two benchmark experimental dam-break flows over erodible beds and one field case of the Taipingkou waterway, Middle Yangtze River, are simulated to demonstrate the high computational efficiency and the satisfactory quantitative accuracy. It is shown that the computational efficiency of the new Model can be faster by an order of magnitude than a Traditional Model of similar type but implementing the global minimum time step (GMiTS). The satisfactory quantitative accuracy of the new Model for the present cases is demonstrated by the negligible L2 norms of water level and bed elevation between the new Model and the Traditional Model, as compared to the L2 norms between the Traditional Model and the measured data.
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Computationally efficient Modeling of hydro-sediment-morphodynamic processes using a hybrid local time step/global maximum time step
Advances in Water Resources, 2019Co-Authors: Peng Hu, Zhiguo HeAbstract:Abstract A hybrid local time step/global maximum time step (LTS/GMaTS) method is proposed for computationally efficient Modeling of hydro-sediment-morphodynamic processes. The governing equations are numerically solved on unstructured triangular meshes using a well-balanced shock-capturing finite volume method with the HLLC approximate Riemann solver. High computational efficiency is achieved by implementing the LTS to solve equations governing sediment-laden flows (i.e., the hydro-sediment part), and implementing the GMaTS to solve equations governing bed materials (i.e., the morphodynamic part). Two benchmark experimental dam-break flows over erodible beds and one field case of the Taipingkou waterway, Middle Yangtze River, are simulated to demonstrate the high computational efficiency and the satisfactory quantitative accuracy. It is shown that the computational efficiency of the new Model can be faster by an order of magnitude than a Traditional Model of similar type but implementing the global minimum time step (GMiTS). The satisfactory quantitative accuracy of the new Model for the present cases is demonstrated by the negligible L2 norms of water level and bed elevation between the new Model and the Traditional Model, as compared to the L2 norms between the Traditional Model and the measured data.
Jennifer L. Burnfield - One of the best experts on this subject based on the ideXlab platform.
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Development of a Global Measure of Job Embeddedness and Integration Into a Traditional Model of Voluntary Turnover
Journal of Applied Psychology, 2007Co-Authors: Craig D Crossley, Steve M. Jex, Rebecca J Bennett, Jennifer L. BurnfieldAbstract:Recent research on job embeddedness has found that both on- and off-the-job forces can act to bind people to their jobs. The present study extended this line of research by examining how job embeddedness may be integrated into a Traditional Model of voluntary turnover. This study also developed and tested a global, reflective measure of job embeddedness that overcomes important limitations and serves as a companion to the original composite measure. Results of this longitudinal study found that job embeddedness predicted voluntary turnover beyond job attitudes and core variables from Traditional Models of turnover. Results also found that job embeddedness interacted with job satisfaction to predict voluntary turnover, suggesting that the job embeddedness construct extends beyond the unfolding Model of turnover (T. R. Mitchell & T. W. Lee, 2001) it originated from.
Terry Haines - One of the best experts on this subject based on the ideXlab platform.
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educators and students prefer Traditional clinical education to a peer assisted learning Model despite similar student performance outcomes a randomised trial
Journal of Physiotherapy, 2014Co-Authors: Samantha Sevenhuysen, Elizabeth H Skinner, Melanie K Farlie, Lyn Raitman, Wendy Moya Nickson, Jenny Lyn Keating, Stephen Maloney, Elizabeth Molloy, Terry HainesAbstract:Abstract Question : What is the efficacy and acceptability of a peer-assisted learning Model compared with a Traditional Model for paired students in physiotherapy clinical education? Design : Prospective, assessor-blinded, randomised crossover trial. Participants : Twenty-four physiotherapy students in the third year of a 4-year undergraduate degree. Intervention : Participants each completed 5 weeks of clinical placement, utilising a peer-assisted learning Model (a standardised series of learning activities undertaken by student pairs and educators to facilitate peer interaction using guided strategies) and a Traditional Model (usual clinical supervision and learning activities led by clinical educators supervising pairs of students). Outcome measures : The primary outcome measure was student performance, rated on the Assessment of Physiotherapy Practice by a blinded assessor, the supervising clinical educator and by the student in self-assessment. Secondary outcome measures were satisfaction with the teaching and learning experience measured via survey, and statistics on services delivered. Results : There were no significant between-group differences in Assessment of Physiotherapy Practice scores as rated by the blinded assessor ( p =0.43), the supervising clinical educator ( p =0.94) or the students ( p =0.99). In peer-assisted learning, clinical educators had an extra 6 minutes/day available for non-student-related quality activities (95% CI 1 to 10) and students received an additional 0.33 entries/day of written feedback from their educator (95% CI 0.06 to 0.61). Clinical educator satisfaction and student satisfaction were higher with the Traditional Model. Conclusion : The peer-assisted learning Model trialled in the present study produced similar student performance outcomes when compared with a Traditional approach. Peer-assisted learning provided some benefits to educator workload and student feedback, but both educators and students were more satisfied with the Traditional Model. Trial registration : ACTRN12610000859088. [Sevenhuysen S, Skinner EH, Farlie MK, Raitman L, Nickson W, Keating JL, Maloney S, Molloy E, Haines TP (2014) Educators and students prefer Traditional clinical education to a peer-assisted learning Model, despite similar student performance outcomes: a randomised trial. Journal of Physiotherapy 60: 209–216]
Craig D Crossley - One of the best experts on this subject based on the ideXlab platform.
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Development of a Global Measure of Job Embeddedness and Integration Into a Traditional Model of Voluntary Turnover
Journal of Applied Psychology, 2007Co-Authors: Craig D Crossley, Steve M. Jex, Rebecca J Bennett, Jennifer L. BurnfieldAbstract:Recent research on job embeddedness has found that both on- and off-the-job forces can act to bind people to their jobs. The present study extended this line of research by examining how job embeddedness may be integrated into a Traditional Model of voluntary turnover. This study also developed and tested a global, reflective measure of job embeddedness that overcomes important limitations and serves as a companion to the original composite measure. Results of this longitudinal study found that job embeddedness predicted voluntary turnover beyond job attitudes and core variables from Traditional Models of turnover. Results also found that job embeddedness interacted with job satisfaction to predict voluntary turnover, suggesting that the job embeddedness construct extends beyond the unfolding Model of turnover (T. R. Mitchell & T. W. Lee, 2001) it originated from.
