Results 41 to 50 of about 694,153 (309)
Influence of ac ageing on space charge dynamics in LDPE [PDF]
, 2003 Polymeric materials have been widely used as insulation in power industry due to their excellent electrical properties. However, these properties deteriorate in time irreversibly when the material is subjected to electric stress. Although space charge is
Fu, M, Liu, X Z, Chen, G
core
Electrical Engineering in Japan, 2004 AbstractThis paper proposes a novel control method based on the virtual AC/DC/AC conversion for the matrix converter. The virtual AC/DC/AC conversion method is a very simple strategy to control the input current and the output voltage for the matrix converter. There are two new topics proposed in this paper.
Itoh, Jun-ichi +5 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Survival after relapse in pediatric acute myeloid leukemia (AML) remains poor, highlighting the critical importance of identifying prognostic factors to guide optimal relapse management. Methods We investigated the prognostic impact of multiparameter flow cytometry (MFC) measurable residual disease (MRD) in 188 patients with first ...
Camilla Poulsen +21 more
wiley +1 more source
Space Charge Behaviour in LDPE after AC Ageing [PDF]
, 2004 Space charge accumulation after ac ageing and its effect on dc poling has been studied in low-density polyethylene (LDPE). LDPE film samples with thickness of around 180mm were aged at an electric stress of 50kV/mm under 50 Hz ac voltage for various ...
Liu, X, Fu, M, Chen, G
core
A Systematic Literature Review on AC Microgrids [PDF]
The objective of this work is to analyze and compare AC microgrid (ACMG) solutions to introduce the topic to new researchers. The methodology used to achieve this goal is a systematic literature review using five questions: (1) How have ACMGs evolved in ...
Gomez-Redondo, Marcos +7 more
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Point of collapse methods applied to AC/DC power systems [PDF]
, 2002 (© 1992 IEEE) Canizares, C. A., Alvarado, F. L., DeMarco, C. L., Dobson, I., & Long, W. F. (1992). Point of collapse methods applied to AC/DC Power Systems. IEEE Transactions on Power Systems, 7(2), 673–683.
DeMarco, Christopher L. +4 more
core +1 more source
Dual-Indexed Ensemble Kalman Filtering-Based Anti-Islanding Detection Methods for AC Microgrids
IEEE AccessThis 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
Control of hybrid AC/DC microgrid under islanding operational conditions
Journal of Modern Power Systems and Clean Energy, 2014 This paper presents control methods for hybrid AC/DC microgrid under islanding operation condition. The control schemes for AC sub-microgrid and DC sub-mi-crogrid are investigated according to the power sharing requirement and operational reliability. In
Guangqian Ding +4 more
doaj +1 more source
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Therapeutic apheresis (TA) is an established treatment modality for hematologic, neurologic, and immunologic disorders, yet access remains severely limited in sub‐Saharan Africa. Donor apheresis, including platelet apheresis collection from healthy donors, represents an important complementary modality supporting blood product ...
Nosa Bazuaye +33 more
wiley +1 more source
Consistency for ACE-Type Methods
The 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