A smooth nonlinear system identification method without resorting to on-line parameter estimation is presented. Based on the radial basis function, a signal-dependent ARX (RBF-ARX) model is established to describe the nonlinear system dynamics. Especially, a new structured nonlinear parameter optimization algorithm based on the Levenberg-Marquardt algorithm and the least squares method is propo...

Please cite this article as: Aurore Curie, Gaëlle Friocourt, Vincent des Portes, Alice Roy, Tatjana Nazir, Amandine Brun, Anne Cheylus, Pascale Marcorelles, Kalliroi Retzepi, Nasim Maleki, Gérald Bussy, Yves Paulignan, Anne Reboul, Danielle Ibarrola, Jian Kong, Nouchine Hadjikhani, Annie Laquerrière, Randy L. Gollub , Basal ganglia involvement in ARX patients: The reason for ARX patients very s...

Little is known about genetic mechanisms that regulate the ratio of cortical excitatory and inhibitory neurons. We show that NPAS1 and NPAS3 transcription factors (TFs) are expressed in progenitor domains of the mouse basal ganglia (subpallium, MGE, and CGE). NPAS1(-/-) mutants had increased proliferation, ERK signaling, and expression of Arx in the MGE and CGE. NPAS1(-/-) mutants also had incr...

The man-machine cooperative system is attracting great attention in many fields, such as industry, welfare and so on. The assisting system must be designed so as to accommodate the operator’s skill, which might be strongly affected by the fatigue. This paper presents a new fatigue recognizer based on the Electro MyoGram (EMG) signals and the Stochastic Switched ARX (SS-ARX) model which is one o...

This paper presents a robust hourly cooling-load forecasting method based on time-indexed autoregressive with exogenous inputs (ARX) models, in which the coefficients are estimated through a two-stage weighted least squares regression. The prediction method includes a combination of two separate time-indexed ARX models to improve prediction accuracy of the cooling load over different forecastin...

Adult pancreatic beta cells can replicate during growth and after injury to maintain glucose homeostasis. Here we report that beta cells deficient in Dnmt1, an enzyme that propagates DNA methylation patterns during cell division, were converted to alpha cells. We identified the lineage determination gene aristaless related homeobox (Arx), as methylated and repressed in beta cells, and hypo-meth...

Identification of autoregressive models with exogenous input (ARX) is a classical problem in system identification. This article considers the errors-in-variables (EIV) ARX model identification problem, where measurements are also corrupted noise. The recently proposed Dynamic Iterative Principal Components Analysis (DIPCA) technique solves EIV but only applicable to white measurement errors. W...

Model predictive control (MPC) is used in the CO2 removal process Subang field to improve its performance. MPC maintain concentration at sweet gas output by controlling feed pressure (PIC-1101), makeup water flow rate (FIC-1102), and amine (FIC-1103). The empirical model applied represent auto-regressive exogenous (ARX) model. ARX compared with first order plus dead time (FOPDT) based on root m...

System identification can be used to construct a model to represent a given system, and it plays an important role in system analysis, control and prediction. From the view of application, conventional nonlinear black-box models are not good since an easy-to-use model is to interpret properties of the nonlinear process, rather than treated as vehicles for adjusting the fit to the data. Therefor...

Adult pancreatic β cells can replicate during growth and after injury to maintain glucose homeostasis. Here, we report that β cells deficient in Dnmt1, an enzyme that propagates DNA methylation patterns during cell division, were converted to α cells. We identified the lineage determination gene aristaless-related homeobox (Arx), as methylated and repressed in β cells, and hypomethylated and ex...