Results 41 to 50 of about 142,456 (255)
A Practical and Fast Algorithm for SVPWM
Kongzhi Yu Xinxi Jishu, 2012 It proposes a novel algorithm of voltage space vector pulse width modulation (SVPWM) based on the analysis of basic principle of SVPWM and the essential relationship between SVPWM and sinusoidal pulse width modulation (SPWM).
WU Hengliang +3 more
doaj
On elementary theories of ordinal notation systems based on reflection principles [PDF]
Proceedings of the Steklov Institute of Mathematics, 2015 23 ...
openaire +3 more sources
Constructing an interval of Minkowski space from a causal set
, 2006 A criticism sometimes made of the causal set quantum gravity program is that there is no practical scheme for identifying manifoldlike causal sets and finding embeddings of them into manifolds.
Henson, Joe
core +1 more source
Reception Baseline Assessment and ‘small acts’ of micro‐resistance
British Educational Research Journal, EarlyView.Abstract In September 2021, following the global COVID‐19 pandemic, the Department for Education introduced a national standardised digital Reception Baseline Assessment (RBA) for all English 4‐year‐old children. We analyse RBA and its associated Quality Monitoring Visits, as a further intensification of the new public management of early years ...
Guy Roberts‐Holmes +2 more
wiley +1 more source
Design of Wireless Sensor Network Based on SimpliciTI Protocol
Gong-kuang zidonghua, 2012 For problems of large cost and high requirements for hardware of international standards such as GPRS, ZigBee, WiFi, etc., the paper proposed a design scheme of wireless sensor network based on SimpliciTI protocol which has low power consumption and is ...
JI Li
doaj
, 2013 We present a new variational principle for the gyrokinetic system, similar to the Maxwell-Vlasov action presented in Ref. 1. The variational principle is in the Eulerian frame and based on constrained variations of the phase space fluid velocity and ...
Bers L. +9 more
core +3 more sources
British Educational Research Journal, EarlyView.Abstract Recruiting and retaining school leaders is a challenge in many systems worldwide. Previous research has identified three distinct ways in which succession planning can be conceptualised and approached: a ‘pipeline’ approach seeks to match supply and demand for the posts that need filling; a ‘pool’ strategy involves proactively identifying and ...
Toby Greany +3 more
wiley +1 more source
Calculating photonic Green's functions using a non-orthogonal finite difference time domain method
, 1998 In this paper we shall propose a simple scheme for calculating Green's functions for photons propagating in complex structured dielectrics or other photonic systems.
A. J. Ward +16 more
core +1 more source
Extent, characteristics and policy applications of Key Biodiversity Areas
Biological Reviews, EarlyView.ABSTRACT A global standard for the identification of Key Biodiversity Areas (KBAs) was published 10 years ago to provide a unified set of criteria for identifying ‘sites of significance for the global persistence of biodiversity’. We review the initiative's origins, the KBA identification process, characteristics of the current network, threats, policy
Stuart H. M. Butchart +57 more
wiley +1 more source
On the theory of vortex quantum tunnelling in the dense Bose superfluid helium II
, 1998 The quantum tunnelling and nucleation theory of vortices in helium II is reviewed. Arguments are given that the only reliable method to calculate tunnelling probabilities in this highly correlated, strongly interacting many-body system is the ...
Anderson +28 more
core +1 more source