Results 271 to 280 of about 13,824,933 (347)

Estimation of Macroscopic Fundamental Diagram Solely From Probe Vehicle Trajectories With an Unknown Penetration Rate

IEEE transactions on intelligent transportation systems (Print), 2023
The Macroscopic Fundamental Diagram (MFD) is a parsimonious modelling tool for monitoring and controlling urban traffic networks. MFD can be derived based on traffic data (empirical or simulation), or approximated analytically.
Elham Saffari, Mehmet Yildirimoglu, M. Hickman   +2 more
semanticscholar   +1 more source

Pavement rutting performance analysis of automated vehicles: impacts of wander mode, lane width, and market penetration rate

International Journal of Pavement Engineering, 2022
The deployment of automated vehicles (AVs) with the gradual market penetration rate increase and different potential lateral movement patterns combined with the lane width effect would lead to different load distribution scenarios, impacting the pavement
A. Yeganeh, B. Vandoren, A. Pirdavani
semanticscholar   +1 more source

Observer-based control of vertical penetration rate in rotary drilling systems

Journal of Process Control, 2021
An algorithm for regulation of the vertical penetration rate in rotary drilling systems is developed under the assumption that parameters of the rock-bit interaction as well as those of the translational dynamics are unknown.
Maksim V. Faronov, I. Polushin
semanticscholar   +1 more source

Rheology Design To Optimise Rate of Penetration

Proceedings of SPE/IADC Drilling Conference, 1996
Abstract A Bit Reynolds Number optimization algorithm has been developed in response to the field observation that this maximizes the rate of penetration regarding bit hydraulic effects. Discussion on the reasons for such behaviour are undertaken and some common drilling scenarios are presented for which Bit Reynolds ...
E. E. Maidla, A. J. Reay, F. E. Beck, C. P. Tan   +3 more
openaire   +1 more source

Cycle-Based End of Queue Estimation at Signalized Intersections Using Low-Penetration-Rate Vehicle Trajectories

IEEE transactions on intelligent transportation systems (Print), 2020
Queue length is a crucial measure of intersection performance. Probe vehicles (PVs) with advanced sensors are capable of recording vehicle trajectories that can be used to estimate queue length, a technique of which has received considerable attention in
Han Zhang, Henry X. Liu, Peng Chen, Guizhen Yu, Yunpeng Wang   +4 more
semanticscholar   +1 more source

Increased Rate of Penetration Through Automation

SPE/IADC Drilling Conference and Exhibition, 2011
Abstract Drilling lags behind other industries in the implementation of automation. One reason for this is the variability of drilling operations and uncertainty in knowing what is being drilled at any given time. A closed-loop system that continually monitors drilling parameters and drilling performance in real time and constantly ...
J. Dunlop, R. Isangulov, W. D. Aldred, H. Arismendi Sanchez, J. L. Flores, J. Alarcon Herdoiza, J. Belaskie, J. C. Luppens   +7 more
openaire   +1 more source

Limestone, shale penetration rate equations developed

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1992
Increasing rotary speed has a greater effect on increasing rate of penetration in Abu Dhabi shales and limestones than other drilling parameters, including various mechanical and hydraulic factors. The graphical presentation of drilling parameters and penetration rate data found that rotary speed is the most important factor in controlling rate of ...
M.E. Osman, S.A. Mohammed
openaire   +1 more source

Water vapor penetration rate into enclosures with known air leak rates

IEEE Transactions on Electron Devices, 1978
The rate at which water vapor penetrates a faulty seal in a "hermetically sealed" device has been examined both experimentally and theoretically in this study. The experimental data was generated by studying the rate of moisture ingress into two types of packages; a TO-5 can and a 1/4 × 1/4 inch ceramic flatpak.
Aaron DerMarderosian, Vincent Gionet
openaire   +1 more source

PREDICTION OF PORE PRESSURE FROM PENETRATION RATE

Proceedings of Fall Meeting of the Society of Petroleum Engineers of AIME, 1968
American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc. This paper was prepared for the 43rd Annual Fall Meeting of the Society of Petroleum Engineers of AIME, to be held in Houston, Tex., Sept. 29-Oct. 2, 1968. Permission to copy is restricted to an abstract of not more than 300 words. Illustrations may not be copied.
openaire   +1 more source

Mass Customization and “Forecasting Options’ Penetration Rates Problem”

Operations Research, 2019
Summary: Auto manufacturers produce a very large number of feasible configurations that make it impossible to forecast the demand of individual configurations. What the companies do forecast is the penetration rate of each option, which is the percentage of cars that include that option.
Ali Fattahi, Sriram Dasu, Reza Ahmadi
openaire   +2 more sources