Results 51 to 60 of about 215 (144)
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose To develop a slice‐wise blurring‐free and densely sampled TE‐resolved multiple‐TE (mTE) ASL sequence (TASL) for measuring blood–brain barrier (BBB) water exchange time. Methods A 3D TSE spiral‐readout pCASL sequence was modified to enable TE‐resolved acquisition.
Bo Li +11 more
wiley +1 more source
, 2017 In this work, a multiple synchronous reference frame (MSRF) based plus optimized Moving Average Filter (MAF) is employed to extract the harmonics and interharmonics components of a three-phase current waveform recorded from transformer substation that ...
Salor, Ozgul, Balouji, Ebrahim
core +2 more sources
High Voltage, EarlyView.ABSTRACT The stability analysis of Line Commutated Converter High Voltage Direct Current (LCC‐HVDC) is of considerable engineering importance. Establishing its analytical mathematical model helps to analyse stability and the factors that affect stability of the system.
Juanjuan Wang +6 more
wiley +1 more source
Variable-Frequency Grid-Sequence Detector Based on a Quasi-Ideal Low-Pass Filter Stage and a Phase-Locked Loop [PDF]
, 2010 This paper proposes a filtered-sequence phase-locked loop (FSPLL) structure for detection of the positive sequence in three-phase systems. The structure includes the use of the Park transformation and moving average filters (MAF).
Martin, Jose Luis +5 more
core +2 more sources
Genomic Assessment of Reintroduced African Wild Dogs Informs Conservation Translocations
Animal Conservation, EarlyView.Few reintroduction and translocation programs incorporate genomic assessments into management planning, despite ongoing debate over how founder individuals should be selected. Here, we assess the genomic composition of reintroduced African wild dog (Lycaon pictus) populations in private reserves in South Africa, comparing them with a free‐roaming ...
Michou Weimar +4 more
wiley +1 more source
The big impact of small change: Fresh estimates of English wheat market integration, 1693–1893
The Economic History Review, EarlyView.Abstract Using existing and new price data sets, we provide the first estimates of market integration across England over the entire 200 years of the industrial revolution. We document a significant, though not huge, integration improvement for markets furthest from London. Full integration was achieved by the 1830s. Our price data sets vary in quality
Liam Brunt, Edmund Cannon
wiley +1 more source
Performance Enhancement of MAF based PLL with Phase Error Compensation in the Pre-Filtering Stage [PDF]
, 2017 The large scale integration of Renewable Energy Sources (RES) requires sophisticated control techniques for efficient power transfer under faults and/or off-nominal grid conditions.
Lenos Hadjidemetriou +7 more
core +1 more source
Grid sequence detector based on a stationary reference frame [PDF]
, 2009 This paper proposes a new three-phase positive sequence detector. The scheme is based on a stationary reference frame and a Moving Average Filter (MAF) that guarantees the complete cancellation of harmonics and grid imbalances.
Pou, Josep +7 more
core +4 more sources
A Moving Average Filter based DSTATCOM Control Approach
Electrical Engineering and EnergySelf-excited induction generators (SEIGs) are commonly preferred in stand-alone renewable energy systems due to their low cost and robust construction. However, the voltage and frequency stability at the SEIG output may be adversely affected by varying ...
Ali Sait Ozer +2 more
doaj +1 more source
Ibis, EarlyView.Fine‐scale genetic structure in animal populations can create opportunities for both kin‐directed co‐operation and kin competition. Knowledge of kinship is therefore key to understanding the selective pressures shaping sociality as well as the effects of social behaviour on local genetic structure.
Joshua B. LaPergola +2 more
wiley +1 more source