Results 31 to 40 of about 3,316,101 (301)

AC loss in large-scale superconducting cables [PDF]

open access: yes, 1993
A review is given of recent work on ac losses, carried out at our institute. The emphasis is on large-scale conductors for fusion applications, such as the `cable-in-conduit¿ prototype conductors to be used for NET.
Mulder, G.B.J.
core   +3 more sources

MgB2 conductors for dc and ac applications

open access: yes, 2001
The paper presents discussion on up to date results on MgB2 conductors from the point of view of their future dc and ac applications. Basic physical parameters of MgB2 compound relevant to conductors are introduced.
B.A. Glowacki   +15 more
core   +1 more source

Improved speed estimation in sensorless PM brushless AC drives [PDF]

open access: yes, 2002
The application of flux-observer-based sensorless control to permanent-magnet brushless AC motor drives is described. Current methods of speed estimation are assessed, both theoretically and experimentally, and an improved method, which combines the best
Howe, D., Shen, J.X., Zhu, Z.Q.
core   +1 more source

Consistency for ACE-Type Methods

open access: yesThe Annals of Statistics, 1990
The ACE (alternating conditional expectations) algorithm developed by Breiman and Friedman is an iterative method for finding optimal transformations of variables in multiple regression. Recently, several authors have extended ACE to discriminant analysis, time series and principal components.
openaire   +2 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Redox forms of glutathione in malignant lesions of the stomach with varying aggressiveness degrees

open access: yesБюллетень сибирской медицины, 2021
Aim. To study the levels of reduced and oxidized glutathione (GSH and GSSG, respectively), as well as the thiol status in gastric cancer (GC) tumors of various histological types and grades.Materials and methods.
I. A. Goroshinskaya   +6 more
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

Dual-Indexed Ensemble Kalman Filtering-Based Anti-Islanding Detection Methods for AC Microgrids

open access: yesIEEE Access
This paper presents a novel Ensemble Kalman Filter (EnKF)-based passive anti-islanding method designed to enhance the reliability and stability of AC microgrids amid increasing integration of distributed energy resources (DERs). The dynamic and nonlinear
Sohaib Tahir Chauhdary   +3 more
doaj   +1 more source

Evaluation of zero-echo-time attenuation correction for integrated PET/MR brain imaging—comparison to head atlas and 68Ge-transmission-based attenuation correction

open access: yesEJNMMI Physics, 2018
Background MRI does not offer a direct method to obtain attenuation correction maps as its predecessors (stand-alone PET and PET/CT), and bone visualisation is particularly challenging.
João M. Sousa   +7 more
doaj   +1 more source

Comparing policy gradient and value function based reinforcement learning methods in simulated electrical power trade [PDF]

open access: yes, 2012
In electrical power engineering, reinforcement learning algorithms can be used to model the strategies of electricity market participants. However, traditional value function based reinforcement learning algorithms suffer from convergence issues when ...
Burt, Graeme   +3 more
core   +1 more source

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