Results 41 to 50 of about 205,537 (300)

Frequency-Domain Nonlinear Modeling Approaches for Power Systems Components—A Comparison

Energies, 2020
Harmonic simulations play a key role in studying and predicting the impact of nonlinear devices on the power quality level of distribution grids. A frequency-domain approach allows higher computational efficiency, which has key importance as long as ...
Marco Faifer, Christian Laurano, Roberto Ottoboni, Sergio Toscani, Michele Zanoni   +4 more
doaj   +1 more source

Non-linear modeling, analysis, design and simulation of a solid state power amplifier based on GaN technology for Ku band microwave application [PDF]

AUT Journal of Modeling and Simulation, 2018
In this paper, a non-linear approach for design and analysis of solid-state power amplifiers is presented and used for AlGaN-GaN high electron-mobility transistor (HEMTs) on SiC substrate for Ku band(12.4 - 13.6 GHz) applications.
V. Ezzati, A. Abdipour
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source

Unrestricted Harmonic Balance

Zeitschrift für Naturforschung A, 1980
Abstract Periodic structures in chemical kinetic systems can be evaluated by an extension of the well-known method of harmonic balance, which yields very simple expressions in the case of linear systems containing only zero and first order reactions. The far more interesting non-linear systems containing e.g.
openaire   +1 more source

Sampled-Data and Harmonic Balance Analyses of Average Current-Mode Controlled Buck Converter

, 2012
Dynamics and stability of average current-mode control of buck converters are analyzed by sampled-data and harmonic balance analyses. An exact sampled-data model is derived. A new continuous-time model "lifted" from the sampled-data model is also derived,
Chen, Cheng, Dixon, Erickson, Fang, Fang, Fang, Fang, Fang, Fang, Fang, Garcera, Giaouris, Kondrath, Kondrath, Ridley, Tang, Yan   +17 more
core   +2 more sources

Statistics of work and fluctuation theorems for microcanonical initial states [PDF]

, 2013
The work performed on a system in a microcanonical state by changes in a control parameter is characterized in terms of its statistics. The transition probabilities between eigenstates of the system Hamiltonians at the beginning and the end of the ...
Hanggi, Peter, Morillo, Manuel, Talkner, Peter, Yi, Juyeon   +3 more
core   +2 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Harmonic balance method for MEMS oscillators

Frontiers in Physics
IntroductionMicro-Electro-Mechanical System (MEMS) oscillators play a pivotal role in diverse applications such as biosensors and wearable sensors. To optimize their performance and ensure reliability, exploring their periodic properties and pull-in ...
Xian-He Lei, Yutong Cui
doaj   +1 more source

A high order purely frequency-based harmonic balance formulation for continuation of periodic solutions [PDF]

, 2009
Combinig the harmonic balance method (HBM) and a continuation method is a well-known technique to follow the periodic solutions of dynamical systems when a control parameter is varied.
Allgower, Azrar, Azrar, Baguet, Bruno Cochelin, Cadou, Christophe Vergez, Cochelin, Cochelin, Cochelin, Crisfield, Damil, Doedel, Doedel, Govaerts, Iu, Krauskopf, Krylov, Lau, Ling, Liu, Nakhla, Navicet, Peng, Pierre, Plesset, Potier-Ferry, Pérignon, Seydel, Stokes, Szemplinska-stupnicka, Urabe, Zahrouni   +32 more
core   +3 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source