Results 31 to 40 of about 1,848,416 (344)

Direct parameter identification of distributed parameter systems [PDF]

International Journal of Systems Science, 2000
A new direct approach to identifying the parameters of distributed parameter systems from noise-corrupted data is introduced. The model of the system which takes the form of a set of linear or nonlinear partial differential equations is assumed known with the exception of a set of constant parameters.
D. Coca, S. A. Billings
openaire   +1 more source

The wave equation as a port-Hamiltonian system and a finite-dimensional approximation [PDF]

, 2002
The problem of approximating a distributed parameter system with free boundary conditions is solved for the 2-dimensional wave equation. To this end we first model the wave equation as a distributed-parameter port-Hamiltonian system.
Golo, G., Schaft, A.J. van der, Talasila, V.   +2 more
core   +1 more source

A Two-Threshold Model for Scaling Laws of Non-Interacting Snow Avalanches

, 2004
The sizes of snow slab failure that trigger snow avalanches are power-law distributed. Such a power-law probability distribution function has also been proposed to characterize different landslide types.
C. Dussauge, D. Sornette, D. H. Rothman, F. Louchet, Francois Louchet, H. L. Jensen, Jean-Robert Grasso, Jerome Faillettaz, K. Aki, P. Bak, S. Hergarten, S. C. Colbeck   +11 more
core   +3 more sources

Hamiltonian formulation of distributed-parameter systems with boundary energy flow [PDF]

, 2001
A Hamiltonian formulation of classes of distributed-parameter systems is presented, which incorporates the energy flow through the boundary of the spatial domain of the system, and which allows to represent the system as a boundary control Hamiltonian ...
Maschke, B.M., Schaft, A.J. van der
core   +7 more sources

Changes in Body Composition in Children and Young People Undergoing Treatment for Acute Lymphoblastic Leukemia: A Systematic Review and Meta‐Analysis

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Ongoing evidence indicates increased risk of sarcopenic obesity among children and young people (CYP) with acute lymphoblastic leukemia (ALL), often beginning early in treatment, persisting into survivorship. This review evaluates current literature on body composition in CYP with ALL during and after treatment.
Lina A. Zahed, Raquel Revuelta Iniesta, Mary Fewtrell, Julie Lanigan, Breeana Gardiner, Graeme O'Connor   +5 more
wiley   +1 more source

Distributed parameter estimation of IIR system using diffusion particle swarm optimization algorithm

Journal of King Saud University: Engineering Sciences, 2019
In wireless sensor networks (WSNs), distributed algorithms are used to estimate desired parameters for minimizing the communication overheads and make the network energy efficient.
Meera Dash, Trilochan Panigrahi, Renu Sharma   +2 more
doaj   +1 more source

MMC‐HVDC AC side line protection based on positive sequence fault component current ratio

IET Generation, Transmission & Distribution, 2023
The high‐voltage direct current (HVDC) transmission based on modular multilevel converter shows the weak feed characteristic of limited fault current amplitude when connected to the traditional AC power grid, which leads to the risk of sensitivity ...
Hanqing Huang, Zengping Wang
doaj   +1 more source

Identification of Parameters in Distributed Parameter Systems by Regularization [PDF]

SIAM Journal on Control and Optimization, 1983
The authors investigate the parameter identification problem for distributed parameter systems. The problem of parameter identification in distributed parameter systems from noisy data is both nonlinear and ill- posed. They develop the concept of regularization, which is widely used in solving linear Fredholm integral equations, for the identification ...
Kravaris, Costas, Seinfeld, John H.
openaire   +4 more sources

Port-Hamiltonian formulation of shallow water equations with Coriolis force and topography [PDF]

, 2008
We look into the problem of approximating the shallow water equations with Coriolis forces and topography. We model the system as an infinite-dimensional port-Hamiltonian system which is represented by a non-constant Stokes-Dirac structure. We here employ
Ambati, V.R., Pasumarthy, R., Schaft, A.J. van der   +2 more
core   +1 more source

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source