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🔍 michael ortiz 📂 Engineering
Showing 15 results for "michael ortiz" in Engineering
Engineering Preprint PDF DOI

Adaptive Finite State Projection with Quantile-Based Pruning for Solving the Chemical Master Equation

Aditya Dendukuri, Linda Petzold · 2025

We present an adaptive Finite State Projection (FSP) method for efficiently solving the Chemical Master Equation (CME) with rigorous error control. Our approach integrates time-stepping with dynamic s…

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Engineering Preprint PDF DOI

RobocupGym: A challenging continuous control benchmark in Robocup

Michael Beukman, Branden Ingram, Geraud Nangue Tasse, Benjamin Rosman, Pravesh Ranchod · 2024

Reinforcement learning (RL) has progressed substantially over the past decade, with much of this progress being driven by benchmarks. Many benchmarks are focused on video or board games, and a large n…

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Engineering Preprint PDF DOI

A physics-informed GAN Framework based on Model-free Data-Driven Computational Mechanics

Kerem Ciftci, Klaus Hackl · 2023

Model-free data-driven computational mechanics, first proposed by Kirchdoerfer and Ortiz, replace phenomenological models with numerical simulations based on sample data sets in strain-stress space. I…

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Engineering Preprint PDF DOI

Model-free data-driven inelasticity in Haigh-Westergaard space -- a study how to obtain data points from measurements

Kerem Ciftci, Klaus Hackl · 2023

Model-free data-driven computational mechanics, first proposed by Kirchdoerfer and Ortiz, replaces phenomenological models with numerical simulations based on sample data sets in strain-stress space. …

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Engineering Preprint PDF DOI

Wireless Network Demands of Data Products from Small Uncrewed Aerial Systems at Hurricane Ian

Thomas Manzini, Robin Murphy, David Merrick, Justin Adams · 2023

Data collected at Hurricane Ian (2022) quantifies the demands that small uncrewed aerial systems (UAS), or drones, place on the network communication infrastructure and identifies gaps in the field. D…

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Engineering Preprint PDF DOI

Evolving Microstructures in Relaxed Continuum Damage Mechanics for Strain Softening

Maximilian Kohler, Daniel Balzani · 2022

A new relaxation approach is proposed which allows for the description of stress- and strain-softening at finite strains. The model is based on the construction of a convex hull replacing the original…

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Engineering Preprint PDF DOI

MICAL: Mutual Information-Based CNN-Aided Learned Factor Graphs for Seizure Detection from EEG Signals

Bahareh Salafian, Eyal Fishel Ben-Knaan, Nir Shlezinger, Sandrine de Ribaupierre, Nariman Farsad · 2022

We develop a hybrid model-based data-driven seizure detection algorithm called Mutual Information-based CNNAided Learned factor graphs (MICAL) for detection of eclectic seizures from EEG signals. Our …

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Engineering Preprint PDF DOI

Efficient Data Structures for Model-free Data-Driven Computational Mechanics

Robert Eggersmann, Laurent Stainier, Michael Ortiz, Stefanie Reese · 2020

The data-driven computing paradigm initially introduced by Kirchdoerfer and Ortiz (2016) enables finite element computations in solid mechanics to be performed directly from material data sets, withou…

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Engineering Preprint PDF DOI

Model-free Data-Driven Computational Mechanics Enhanced by Tensor Voting

Robert Eggersmann, Laurent Stainier, Michael Ortiz, Stefanie Reese · 2020

The data-driven computing paradigm initially introduced by Kirchdoerfer & Ortiz (2016) is extended by incorporating locally linear tangent spaces into the data set. These tangent spaces are constructe…

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Engineering Preprint PDF DOI

Development of a robotic system for automatic organic chemistry synthesis

Joyce Xin-Yan Lim, Dasheng Leow, Quang-Cuong Pham, Choon-Hong Tan · 2019

Automated chemical synthesis carries great promises of safety, efficiency and reproducibility for both research and industry laboratories. Current approaches are based on specifically-designed automat…

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Engineering Preprint PDF DOI

Model-Free Data-Driven Inelasticity

Robert Eggersmann, Trenton Kirchdoerfer, Stefanie Reese, Laurent Stainier, Michael Ortiz · 2018

We extend the Data-Driven formulation of problems in elasticity of Kirchdoerfer and Ortiz (2016) to inelasticity. This extension differs fundamentally from Data-Driven problems in elasticity in that t…

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Engineering Preprint PDF DOI

Finite Element Procedures for Enzyme, Chemical Reaction and 'In-Silico' Genome Scale Networks

R.C. Martins, N. Fachada · 2015

The capacity to predict and control bioprocesses is perhaps one of the most important objectives of biotechnology. Computational simulation is an established methodology for the design and optimizatio…

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Engineering Preprint PDF DOI

Efficient reduction of Kappa models by static inspection of the rule-set

Andreea Beica, Calin Guet, Tatjana Petrov · 2015

When designing genetic circuits, the typical primitives used in major existing modelling formalisms are gene interaction graphs, where edges between genes denote either an activation or inhibition rel…

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Engineering Preprint PDF DOI

Model-order reduction of biochemical reaction networks

Shodhan Rao, Arjan van der Schaft, Karen van Eunen, Barbara M. Bakker, Bayu Jayawardhana · 2012

In this paper we propose a model-order reduction method for chemical reaction networks governed by general enzyme kinetics, including the mass-action and Michaelis-Menten kinetics. The model-order red…

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Engineering Peer-Reviewed PDF DOI

Delayed presentation of rickets in a child with labyrinthine aplasia, microtia and microdontia (LAMM) syndrome.

 · 1970

BACKGROUND: Labyrinthine Aplasia, Microtia and Microdontia (LAMM) syndrome is characterized by the complete absence of inner ear structures (Michel aplasia), microtia and microdontia. Hypophosphatemic…

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