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A Matrix-Free Posterior Ensemble Kalman Filter Implementation Based on a Modified Cholesky Decomposition

Elias D. Nino-Ruiz

In this paper, a matrix-free posterior ensemble Kalman filter implementation based on a modified Cholesky decomposition is proposed. The method works as follows: the precision matrix of the background error distribution is estimated based on a modified Ch... see more

ensemble kalman filter | posterior ensemble | modified cholesky decomposition

Atmosphere , 2017

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Estimating Oil Reservoir Permeability and Porosity from Two Interacting Wells

S. Sutawanir,Agus Yodi Gunawan,Nina Fitriyati,Iskandar Fahmi,Anggita Septiani,Rini Marwati

The Ensemble Kalman Filter (EnKF) can be used as a method to estimate reservoir parameters, such as permeability and porosity. These parameters play an important role in characterizing reservoir performance. The EnKF is a sequential estimation method that... see more

ensemble Kalman filter | flow model | interacting well | sequential estimation | Laplace transform.

Journal of Mathematical and Fundamental Sciences , 2013

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Neurophysiological mechanisms and features of autonomic support of productive cognitive activity of intuitive type in young adults

?. O. Tretyak, ?. M. ??fan, ?. M. Znanetska, F. F. Boyechko, ?. V. Severynovska

Is intuition a conscious or subconscious process, a “sixth sense” or a product of learning? This article contains an answer to this question which is based on the disclosure of neurophysiological mechanisms of one of the least understandable types of huma... see more

Regulatory Mechanisms in Biosystems , 2021

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L’ETAT D’URGENCE EN FRANCE : LE JUGE ADMINISTRATIF ET LA PROTECTION DES LIBERTES

Michel Guillot

Les attentats du 13 novembre 2015 à Paris ont engendré sur l’ensemble du territoire français la mise en œuvre de l’« état d’urgence » qui est un des régimes d’exception permettant de faire face à un péril menaçant la Nation et l’Etat. Décidé par... see more

Etat d’urgence | Etat de droit | contrôle du juge administratif | protection des libertés.

Revista ESMAT , 2018

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A língua portuguesa como uma nova língua clássica - Portuguese language as a new classical language

Ana Waleska Pollo Campos Mendonça, Brasil

Este artigo se propõe a estudar o processo de constituição da Gramática Portuguesa como uma cadeira autônoma, no âmbito das Reformas Pombalinas dos Estudos Menores. Estuda, particularmente, um conjunto documental constituído de uma Lei e Alvará Régio de 1... see more

História da Educação , 1948

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Constraining Parameter Uncertainty in Simulations of Water and Heat Dynamics in Seasonally Frozen Soil Using Limited Observed Data

Mousong Wu, Per-Erik Jansson, Xiao Tan, Jingwei Wu, Jiesheng Huang

Water and energy processes in frozen soils are important for better understanding hydrologic processes and water resources management in cold regions. To investigate the water and energy balance in seasonally frozen soils, CoupModel combined with the gene... see more

energy balance | seasonally frozen soil | uncertainty analysis | coupled transport

Water , 2016

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Classification of Company Performance Status Using Ensemble Learning and SMOTE by Considering CGI

Affindi Mario Bagaskara, Arif Djunaidy, Retno Aulia Vinarti

The global financial crisis that occurred in 2008 made most companies disturbed and unstable. In Indonesia, the impact of the global financial crisis can be felt continuously at the end of 2008. Indonesia's economic growth began from 2008-2009, the lowest... see more

Financial Distress Prediction | Multi-class classification | Ensemble learning | SMOTE | Corporate Governance Indicators

JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI , 2023

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Aggressive Posterior ROP: Unmonitored Oxygen Therapy Contributed to Blindness in Preterm Infant – A Case Report

A subtype of retinopathy of prematurity (ROP) with aggressive behaviour is called aggressive posterior retinopathy of prematurity (APROP), which occurs in very preterm infants. We report a case of APROP in a borderline moderate preterm baby... see more

Aggressive posterior retinopathy of prematurity | premature infant | supplemental oxygen

Journal of Biomedical and Clinical Sciences , 2023

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Pneumonia Detection on X-Ray Imaging using Softmax Output in Multilevel Meta Ensemble Algorithm of Deep Convolutional Neural Network Transfer Learning Models

(1) Simeon Yuda Prasetyo (Bina Nusantara University, Indonesia) (2) Ghinaa Zain Nabiilah (Bina Nusantara University, Indonesia) (3) Zahra Nabila Izdihar (Bina Nusantara University, Indonesia) (4) Sani Muhamad Isa (Bina Nusantara University, Indonesia)

Pneumonia is the leading cause of death from a single infection worldwide in children. A proven clinical method for diagnosing pneumonia is through a chest X-ray. However, the resulting X-ray images often need clarification, resulting in subjective judgme... see more

Pneumonia classification | Transfer learning | Deep convolutional neural network | Softmax | Multilevel meta ensemble

International Journal of Advances in Intelligent Informatics , 2023

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