Results 21 to 30 of about 694,153 (309)

Assessing taxpayers’ satisfaction with tax administration e-services [PDF]

open access: yesZbornik radova Ekonomskog fakulteta u Rijeci : časopis za ekonomsku teoriju i praksu
As tax administrations worldwide modernize through digital technologies, it has become increasingly important to understand taxpayers’ satisfaction with these services.
Lidija Hauptman   +2 more
doaj   +1 more source

Methods for evaluation of coating performance based on AC impedance technique

open access: yesZhongguo Jianchuan Yanjiu, 2020
[Objectives] Coating on the surface of ships is a common method of ship anti-corrosion. The corrosion resistance of the coating directly reflects the corrosion degree of the ship's surface.
XU Zhixiong   +5 more
doaj   +1 more source

Self-Commissioning of Inverter Nonlinear Effects in AC Drives [PDF]

open access: yes, 2012
The paper presents a novel technique for an accurate identification of the inverter nonlinear effects, such as the dead-time and on-state voltage drops. The proposed technique is very simple and it is based only on a current control scheme.
Rosu, S.G.   +10 more
core   +1 more source

A review of sensorless control methods for AC motor drives

open access: yesCES Transactions on Electrical Machines and Systems, 2018
In recent years, the application of sensorless AC motor drives is expanding in areas ranging from industrial applications to household electrical appliances.
Dianguo Xu   +4 more
doaj   +1 more source

Torque behavior of one-phase permanent magnet AC motor [PDF]

open access: yes, 2006
This paper presents a detailed comparative study of two starting and running methods for a single-phase permanent magnet synchronous motor, equipped with a squirrel-cage rotor. The analysis of the motor performance is realized for a pulse width modulated
McGilp, M.I.   +5 more
core   +1 more source

Effect of winding methods: transport AC losses in CORC coils [PDF]

open access: yes, 2022
AC losses undoubtedly increase the burden on the cooling system and affect the overall performance of high-temperature superconducting (HTS) cables. Therefore, AC losses in HTS cables are important design factors for large-scale HTS equipments. Extensive

core   +2 more sources

Multimodel Inference for the Prediction of Disease Symptoms and Yield Loss of Potato in a Two-Year Crop Rotation Experiment

open access: yesInternational Journal of Agronomy, 2012
The second order Akaike information criterion was used for the assessment of 139 regression models for three responses of potato test crops: (a) incidence of Spongospora subterranea on the harvested tubers, (b) percentage of haulms infected with ...
Wim Van den Berg, Jan Vos, Johan Grasman
doaj   +1 more source

Measuring absorptive capacity in high-tech companies: Mixing qualitative and quantitative methods [PDF]

open access: yes, 2014
The objective of this article is to show how mixed methods can be used to develop a deeper understanding of the construct, absorptive capacity (AC). We used qualitative data from eight case studies to identify which types of AC knowledge firms have. Then
Pavlovich, Kathryn   +2 more
core   +1 more source

Control Strategies for Open-End Winding Drives Operating in the Flux-Weakening Region [PDF]

open access: yes, 2013
This paper presents and compares control strategies for three-phase open-end winding drives operating in the flux-weakening region. A six-leg inverter with a single dc-link is associated with the machine in order to use a single energy source.
KESTELYN, Xavier   +4 more
core   +1 more source

Attenuation Correction Approaches for Serotonin Transporter Quantification With PET/MRI

open access: yesFrontiers in Physiology, 2019
BackgroundSeveral MR-based attenuation correction (AC) approaches were developed to conquer the challenging AC in hybrid PET/MR imaging. These AC methods are commonly evaluated on standardized uptake values or tissue concentration.
Lucas Rischka   +17 more
doaj   +1 more source

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