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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.

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Showing 1 to 20 of 35 for “"ARX"”.

  1. An efficient ARX model selection procedure applied to autonomic heart rate variability

    Perrott, Michael H. (Michael Henderson)Massachusetts Institute of Technology1992

    Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1992.

    mit Repository record

  2. Funktionelle Charakterisierung der Transkriptionsfaktoren Nkx2.2 und Arx in der Entwicklung der endokrinen Zellen im murinen Pankreas

    Kordowich, Simon2012

    … haben offenbart, dass der Transkriptionsfaktor Arx für die Ausbildung Glucagon-produzierender Alpha-Zellen essenziell ist. Arx-Knockout Mäuse entwickeln keine Alpha-Zellen wohingegen die Populationen der Beta- und Delta-Zellen vergrößert ist (Collombat et al., 2003). Die Überexpression von Arx …

    goettingen Repository record

  3. Predição da radiação solar por meio de modelagem linear (ARX e ARMAX) e modelagem não-linear (Redes Neurais)

    Silva, Vinicius Leonardo Gadioli daUniversidade Federal de Viçosa2016

    … simulação. A utilização da modelagem linear (ARX e ARMAX) para predição de dados de radiação solar mostrou-se eficiente para as composições: Extraterrestre Normal (Erro Quadrático Médio = 2,51%), lnfravermelha (Erro Quadrático Médio 1,40%) e Extraterrestre Horizontal (Erro Quadrático Médio = …

    brazil-ufv Repository record

  4. PSO modelling and PID controlled of automatic fish feeder system

    W Mahmud, Wan Muhammad AzlanUniversiti Tun Hussein Onn Malaysia2020

    … feeding system by using PID controller through ARX modelling. In this study, raw data at distribution part with speed of 130 rpm, 160 rpm, 190 rpm, 220 rpm and 250 rpm were extracted and used to determine ARX equation parameters as transfer function by using PSO algorithm to optimize ARX model …

    uthm Repository record

  5. Comparison of linear parametric models for predicting fMRI response

    Gandhi, Parina

    … models including Autoregressive model (ARX), Autoregressive Moving Average Model (ARMAX), Box-Jenkins Model (BJ), Instrument Variable Model (IV) and Prediction Error Model (PEM) were used to predict the fMRI response and their performances compared. Transfer functions were computed for …

    njit Repository record

  6. Polynomial system identification modeling and adaptive model predictive control of arterial oxygen saturation in premature infants

    Dutton, Richard H.University of Missouri--Columbia2020

    … of autoregressive with exogenous inputs (ARX) and Box-Jenkins (BJ) models to investigate possible improved modeling of the dynamic relationship between the FiO2, Heart Rate (HR), and Respiratory Rate (RR) to the SpO2. Through a parameter sweep of different of polynomial orders and sampling …

    missouri Repository record

  7. Cambios histomorfométricos tardíos del islote pancreático en un modelo murino, sometido a cirugía bariátrica/metabólica experimental bypass gástrico con y de roux

    Díaz Gómez, Alfredo Luis2022

    … beta y alfa; factores de transcripción (Pdx-1 y ARX), proliferación (Ki67). Además comprobamos los cambios histológicos y funcionales adaptativos en el asa alimentaria, así como transportadores intestinales de glucosa y otros glúcidos. Resultados: Nuestro estudio mostró un incremento inicial en …

    cadiz Repository record

  8. Isolation and identification of a phytoalexin from sugarcane

    Brinker, Anita MarieUniversity of Illinois at Urbana-Champaign2011

    … teleomorph Glomerella tucumanensis (Speg.) von Arx and E. Muller), indicate that disease resistance is associated with production of a red material. This red substance accumulates in sugarcane (Saccharum spp.) cells infected by or adjacent to hyphae of C. falcatum, and appears to inhibit further …

    uiuc Repository record

  9. Application of vibration-based damage detection techniques to civil infrastructure : incorporating uncertainty quantification

    Dzvukamanja, Setonam KomlaDepartment of Civil Engineering2008

    … that compared the residual errors of an ARX model fitted to a reference dynamic system with the residual errors of the same model fitted to a potentially damaged dynamic system. The damage-sensitive feature was chosen as the ratio between the standard deviation of the residual errors for …

    cape-town Repository record

  10. Sensorless temperature estimation and control of Peltier devices

    Odhner, Lael Ulam, 1980-Massachusetts Institute of Technology2006

    … at a rate of 200 Hz between pulses. A low order ARX model is then used to estimate the SMA temperature. The SMA temperature can be controlled using this estimate. This method will enable the production of large arrays of TED-driven SMA tendon actuators, particularly for large DOF robotic systems.

    mit Repository record

  11. Time-frequency investigation of heart rate variability and cardiovascular system modeling of normal and chronic obstructive pulmonary disease (COPD) subjects

    Newandee, Douglas Alan

    … a special class of the exogenous autoregressive (ARX) model is developed as an analytical tool for uncovering the hidden autonomic control processes. Non-parametric relationships between the input and outputs of the ARX model resulting in transfer function estimations of the noise filters and the …

    njit Repository record

  12. Extracting transcriptional regulatory information from DNA microarray expression data

    Schmitt, William A. (William Anthony), 1976-Massachusetts Institute of Technology2003

    … construct AutoRegressive with eXogenous input (ARX) models. These provide dynamic, state-space models for prediction of transcriptional profiles given a dynamically changing set of environmental perturbations...

    mit Repository record

  13. Modeling and Prediction in Diabetes Physiology

    Cescon, MarziaDepartment of Automatic Control, Lund Institute of Technology, Lund University2013

    … predictors, i.e., up to 120 minutes ahead, used ARX-, ARMAX- and subspace-based prediction.

    lund Repository record

  14. Global barotropic variability of the ocean in response to atmospheric forcing based on multichannel regression and Kalman filter techniques

    Chechelnitsky, Michael Y.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution1996

    … dependence. We use auto-regressive external (ARX) time-series models to test the hypothesis in all of the Pacific Ocean. We also test whether any significant residual regression on the atmospheric loading is left after the inverted barometer effect is corrected for. We find that no linear …

    woods-hole Repository record

  15. Estimation of cardiovascular indices by analysis of the arterial blood pressure signal

    Arai, TatsuyaMassachusetts Institute of Technology2011

    … an auto-regressive with exogenous input (ARX) model to describe the filter between ABF and ABP. Because ABF (the exogenous input to the peripheral circulation) is approximately zero during diastole, the diastolic ABP waveforms can be regarded as auto-regressive (AR). By the AR analysis of …

    mit Repository record

  16. Advanced functional and sequential statistical time series methods for damage diagnosis in mechanical structures

    Κοψαυτόπουλος, Φώτης2013

    … discrete-time linear time series models of the ARX and ARMAX types, data pooling techniques, and statistical parameter estimation. Corresponding Vector-dependent Functionally Pooled (VFP) ARX and ARMAX models are postulated, and proper estimators of the Least Squares (LS), Maximum Likelihood …

    patras-thes Repository record

  17. Bicycle and Pedestrian Traffic Monitoring and AADT Estimation in a Small Rural College Town

    Lu, TianjunVirginia Tech2016

    … schemes provided by MetroCount (i.e., ARX Cycle, BOCO and Bicycle 15). Based on the validation counts the BOCO (Boulder County, CO) classification scheme (hourly counts) had similar R2 using a polynomial correction equation (0.898) as compared to ARX Cycle (0.895) and Bicycle 15 …

    vt Repository record

  18. Damage Detection Methodologies For Structural Health Monitoring of Thin-Walled Pressure Vessels

    Modesto, Arturo

    … and Auto Regressive model with eXogeneous input (ARX) models 4) Compare differences in various types of pressure vessels First an introduction to theoretical pressure vessels, which are used to compare to actual test specimens, is presented. Next, a background review of the test specimens …

    ucf

  19. The Role of Maelstrom in the Drosophila piRNA Pathway

    Frantzis, VasileiosUniversity of Cambridge2024

    … factor positioned downstream of Piwi and Arx and upstream of Panx, linking the target recognition with heterochromatin establishment. Outside the nucleus, Maelstrom’s role in PTGS within the nuage of Drosophila germline cells was then investigated in the second chapter. Maelstrom is not …

    cambridge Repository record

  20. Privacy preserving data anonymisation: an experimental examination of customer data for POPI compliance in South Africa

    Chetty, NirvashneeUniversity of Cape Town2020

    … An experimental environment was setup with the ARX de-identification tool as the tool of choice to implement the privacy models. Two privacy models, namely k-anonymity and ldiversity, were tested on a publicly available data set. Data quality models as well as privacy risk measures were …

    cape-town Repository record

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