Results 1 to 10 of about 47,487,307 (346)

Research on optimization method of primary frequency modulation capability based on different ratios of hydropower [PDF]

open access: yesE3S Web of Conferences, 2020
With the continuous development of China’s cross-regional interconnected power grid, large- capacity and long-distance transmission have become an important feature of China’s power grid.
Pan Xiaojie   +4 more
doaj   +1 more source

Integration of Multiple Data Sources for predicting the Engagement of Students in Practical Activities [PDF]

open access: yesInternational Journal of Interactive Multimedia and Artificial Intelligence, 2014
This work presents the integration of an automatic assessment system for virtual/remote laboratories and the institutional Learning Management System (LMS), in order to analyze the students’ progress and their collaborative learning in virtual/remote ...
Llanos Tobarra   +5 more
doaj   +1 more source

Research on Slung-load Swing Control Method in Helicopter Suspension Flight

open access: yesHangkong gongcheng jinzhan, 2022
For helicopter with large suspension load,the coupling between helicopter body and load will significantly affect the maneuverability and stability of the helicopter.
ZHANG Song, MA Zhao, ZHANG Hui
doaj   +1 more source

Fabric-iot: A Blockchain-Based Access Control System in IoT

open access: yesIEEE Access, 2020
IoT devices have some special characteristics, such as mobility, limited performance, and distributed deployment, which makes it difficult for traditional centralized access control methods to support access control in current large-scale IoT environment.
Han Liu, Dezhi Han, Dun Li
semanticscholar   +1 more source

Simulation Modeling and Application for Active Center of Gravity Control Function

open access: yesHangkong gongcheng jinzhan, 2022
Drag-reduction and fuel conservation,one of the significant benefits of active center of gravity(CG)control function,plays an important role in iterative and optimal design of function scheme.
YANG Jun   +4 more
doaj   +1 more source

Characterization of Regional Poison Center Utilization Through Geospatial Mapping

open access: yesWestern Journal of Emergency Medicine, 2020
Introduction: Penetrance is the annual rate of human exposure calls per 1000 persons, a measure that historically describes poison center (PC) utilization. Penetrance varies by sociodemographic characteristics and by geography. Our goal in this study was
Travis D. Olives   +3 more
doaj   +1 more source

Gait Recognition for Lower Limb Exoskeletons Based on Interactive Information Fusion

open access: yesApplied Bionics and Biomechanics, 2022
In recent decades, although the research on gait recognition of lower limb exoskeleton robot has been widely developed, there are still limitations in rehabilitation training and clinical practice.
Wei Chen   +5 more
doaj   +1 more source

Optimal Allocation of Distributed Generators in Active Distribution Network considering TOU Price

open access: yesInternational Journal of Antennas and Propagation, 2023
As the distributed generators (DGs) are connected to active distribution network (ADN), it strengthens the communication interest between the customs and DGs and can facilitate energy integration. This article proposes hybrid pricing for DG configuration
Hongbo Liu   +5 more
doaj   +1 more source

Identification of a Spatio-Temporal Temperature Model for Laser Metal Deposition

open access: yesMetals, 2021
Laser-based additive manufacturing enables the production of complex geometries via layer-wise cladding. Laser metal deposition (LMD) uses a scanning laser source to fuse in situ deposited metal powder layer by layer. However, due to the excessive number
Matthias Kahl   +3 more
doaj   +1 more source

Mechanism of chirp excitation

open access: yesJournal of Magnetic Resonance Open, 2022
In design of a chirp inversion pulse, we keep the sweep rate a≪ω12, where ω1 is the amplitude of the pulse. This is the adiabaticity condition for the inversion to work.
Sreya Das, Justin Jacob, Navin Khaneja
doaj   +1 more source

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