Results 11 to 20 of about 1,004,191 (301)

Pragmatic Low-Power Interoperability: ContikiMAC vs TinyOS LPL [PDF]

open access: yes, 2012
Standardization has driven interoperability at multiple layers of the stack, such as the routing and application layers, standardization of radio duty cycling mechanisms have not yet reached the same maturity.
Dunkels, Adam   +3 more
core   +2 more sources

Experimental Study into Optimal Configuration and Operation of Two-Four Rotor Coaxial Systems for eVTOL Vehicles

open access: yesAerospace, 2022
Coaxial rotors are utilized in multirotor aerial vehicles for the added thrust compared to independent rotors while keeping similar area footprints; however, performance losses should be considered. This experimental study analyzes the effects of varying
Jubilee Prasad Rao   +3 more
doaj   +1 more source

Model predictive duty cycle control for three‐phase Vienna rectifiers

open access: yesIET Power Electronics, 2022
The Vienna rectifiers are widely used in industrial applications. The computationally efficient optimal switching sequence model predictive control directly optimizes the switching sequences.
Bo Xu   +3 more
doaj   +1 more source

A Comparative Examination of the Promisee’s Duty to Cooperate in Performing the Obligation in Islamic Jurisprudence, Iranian Law and International Commercial Contracts [PDF]

open access: yesپژوهش تطبیقی حقوق اسلام و غرب, 2021
The purpose of the parties in creating an obligation is performing it and performance of the obligation is undertaken by the promisor. However, there are cases in which either basically the performance of obligation without the cooperation of the promise
ahmad usefzadeh   +2 more
doaj   +1 more source

On Heterogeneous Neighbor Discovery in Wireless Sensor Networks [PDF]

open access: yes, 2014
Neighbor discovery plays a crucial role in the formation of wireless sensor networks and mobile networks where the power of sensors (or mobile devices) is constrained.
Bian, Kaigui   +6 more
core   +4 more sources

Adaptive duty cycle control–based opportunistic routing scheme to reduce delay in cyber physical systems

open access: yesInternational Journal of Distributed Sensor Networks, 2019
Wireless sensor networks are the foundation of cyber physical systems. In loss and delay sensitive wireless sensor networks, there is much room for improving the performance of opportunistic routing scheme. In this article, an adaptive duty cycle control–
Xuemei Xiang   +5 more
doaj   +1 more source

A Duty Ratio Control Strategy to Reduce Both Torque and Flux Ripples of DTC for Permanent Magnet Synchronous Machines

open access: yesIEEE Access, 2019
This paper proposes a novel duty ratio modulated direct torque control (DDTC) for permanent magnet synchronous motor drive system to achieve high steady performance and reducing ripples of CDTC, especially the ripple of stator flux, which is ignored in ...
Zheng Zhang, Xinghua Liu
doaj   +1 more source

Performance Improvement for PMSM Driven by DTC Based on Discrete Duty Ratio Determination Method

open access: yesApplied Sciences, 2019
In order to improve the performance of the servo control system, which is composed ofthe permanent magnet synchronous motor (PMSM) driven by novel direct torque control based on the fixed sector division criterion (FS-DTC) utilizing the composite active ...
Dazhi Wang   +5 more
doaj   +1 more source

Time Protection: the Missing OS Abstraction [PDF]

open access: yes, 2018
Timing channels enable data leakage that threatens the security of computer systems, from cloud platforms to smartphones and browsers executing untrusted third-party code.
Acıiçmez Onur   +22 more
core   +2 more sources

Research Progress of Epoxy Heavy-Duty Protective Coatings Reinforced by Nano and Fiber Materials [PDF]

open access: yesCailiao Baohu
Epoxy heavy-duty protective coatings are regarded as excellent anti-corrosion materials due to their good adhesion strength,mechanical properties and resistance to chemical media, and are widely used in marine, petroleum, chemical and construction ...
WANG Hongfei, LU Weizhong, ZHANG Heqi, CHEN Ying
doaj   +1 more source

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