Results 21 to 30 of about 71,984 (297)

A Three-level Space Vector PWM Strategy Based on Variable Virtual Middle Vector [PDF]

open access: yesKongzhi Yu Xinxi Jishu, 2018
T-type three-level topology has been widely applied in power converters for its high efficiency and low output harmonics, and the performance of this converter is determined by the effect of its capacitor neutral point voltage control.
LIN Zhenjun   +5 more
doaj   +2 more sources

Montage as a narrative vector for virtual reality experiences [PDF]

open access: yes, 2022
The goal of our paper is to demonstrate through artistic experimentation that the concept of montage can be an effective vector for conveying complex narratives in immersive, room-scale virtual reality experiences. We review the particularities of virtual reality mediations regarding narrative, and we propose the new conceptual framework of « spatial ...
Sagot-Duvauroux, Rémi   +2 more
openaire   +3 more sources

Virtual Vector-Based Direct Power Control of a Three-Phase Coupled Inductor-Based Bipolar-Output Active Rectifier for More Electric Aircraft

open access: yesEnergies, 2023
Direct power control (DPC) has gained increasing attention in recent years as a simple and efficient control strategy for pulse width modulation (PWM) rectifiers.
Yajun Zhao, Wenxin Huang, Feifei Bu
doaj   +1 more source

Control Strategy of Three-Level NPC Inverter Based on Variable Coefficient Virtual Vector Model Predictive Control

open access: yesIEEE Open Journal of Circuits and Systems, 2022
The Conventional model predictive control (C-MPC) uses only a single voltage vector in each control period, resulting in poor control performance. In addition, the computational burden in discrete space state generated by three-level inverter cannot be ...
Weiquan Gu   +4 more
doaj   +1 more source

Virtual sensors for 2D vector field tomography [PDF]

open access: yesJournal of the Optical Society of America A, 2010
We consider the application of tomography to the reconstruction of 2-D vector fields. The most convenient sensor configuration in such problems is the regular positioning along the domain boundary. However, the most accurate reconstructions are obtained by sampling uniformly the Radon parameter domain rather than the border of the reconstruction domain.
Giannakidis, A, Kotoulas, L, Petrou, M
openaire   +2 more sources

Research on the Simplified SVPWM for Three-Phase/Switches Y-Type Two-Level Rectifier

open access: yesIEEE Access, 2020
The three-phase/switch Y-type two-level rectifier is widely used in the unidirectional power-flowing applications such as LED illumination, communication and uninterruptible power supply.
Hui Ma   +3 more
doaj   +1 more source

The Pharmacophore Kernel for Virtual Screening with Support Vector Machines [PDF]

open access: yesJournal of Chemical Information and Modeling, 2006
We introduce a family of positive definite kernels specifically optimized for the manipulation of 3D structures of molecules with kernel methods. The kernels are based on the comparison of the three-points pharmacophores present in the 3D structures of molecul es, a set of molecular features known to be particularly relevant for virtual screening ...
Mahé, Pierre   +3 more
openaire   +5 more sources

An improved seven-phase SVPWM modulation strategy based on virtual voltage vectors

open access: yesEnergy Reports, 2023
Seven-phase motors are usually powered by seven-phase voltage source inverter. The traditional seven-phase SVPWM algorithm produces a large common-mode voltage (CMV), while harmonic currents in the harmonic subspace can also produce large harmonic losses
Baolin Jia, Wei Xie
doaj   +1 more source

Virtual Screening with Support Vector Machines and Structure Kernels [PDF]

open access: yesCombinatorial Chemistry & High Throughput Screening, 2009
Support vector machines and kernel methods have recently gained considerable attention in chemoinformatics. They offer generally good performance for problems of supervised classification or regression, and provide a flexible and computationally efficient framework to include relevant information and prior knowledge about the data and problems to be ...
Mahé, Pierre, Vert, Jean-Philippe
openaire   +4 more sources

2021 NEVBD Virtual Annual Meeting Report [PDF]

open access: yes, 2021
The Northeast Regional Center for Excellence in Vector-Borne Diseases is supported through Cooperative Agreement Number 1U01CK000509-01 between the Centers for Disease Control and Prevention (CDC) and Cornell UniversityNEVBD membership convened 12January
Northeast Regional Center for Excellence in Vector-Borne Diseases
core  

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