Search results for " Artificial"

showing 10 items of 2657 documents

Surrogate-assisted multicriteria optimization: Complexities, prospective solutions, and business case

2017

Complexity in solving real-world multicriteria optimization problems often stems from the fact that complex, expensive, and/or time-consuming simulation tools or physical experiments are used to evaluate solutions to a problem. In such settings, it is common to use efficient computational models, often known as surrogates or metamodels, to approximate the outcome (objective or constraint function value) of a simulation or physical experiment. The presence of multiple objective functions poses an additional layer of complexity for surrogate-assisted optimization. For example, complexities may relate to the appropriate selection of metamodels for the individual objective functions, extensive …

optimization problemsMathematical optimizationComputer scienceStrategy and Managementmedia_common.quotation_subjectConstraint (computer-aided design)0211 other engineering and technologiesmultiple criteria decision makingGeneral Decision Sciences02 engineering and technologyMulti-objective optimizationOutcome (game theory)evolutionary multicriteria optimizationEngineering optimizationmulticriteria optimization0202 electrical engineering electronic engineering information engineeringPoint (geometry)Business caseFunction (engineering)media_commonta113Computational model021103 operations researchmetamodelsexpensive optimization problemssurrogatesexpensesmachine learning020201 artificial intelligence & image processing
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Iterative Learning Applied to Hydraulic Pressure Control

2018

This paper addresses a performance limiting phenomenon that may occur in the pressure control of hydraulic actuators subjected to external velocity disturbances. It is demonstrated that under certain conditions a severe peaking of the control error may be observed that significantly degrades the performance of the system due to the presence of nonlinearities. The phenomenon is investigated numerically and experimentally using a system that requires pressure control of two hydraulic cylinders. It is demonstrated that the common solution of feed forwarding the velocity disturbance is not effective in reducing the peaking that occurs as a result of this phenomenon. To improve the system perfor…

peaking phenomenon0209 industrial biotechnologylimit cyclesComputer scienceControl (management)Iterative learning controliterative learning controlHydraulic pressure control02 engineering and technologyHydraulic pressurelcsh:QA75.5-76.95Computer Science Applications020901 industrial engineering & automationControl and Systems EngineeringControl theoryModeling and Simulation0202 electrical engineering electronic engineering information engineering020201 artificial intelligence & image processinglcsh:Electronic computers. Computer scienceSoftwareModeling, Identification and Control: A Norwegian Research Bulletin
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Silenciamiento sistémico inducido por pequeños RNAs artificiales en Nicotiana benthamiana

2020

Los pequeños RNAs (sRNAs), microRNAs (miRNAs) y sRNAs de interferencia (siRNAs), degradan específicamente moléculas de RNA de secuencia complementaria, proceso conocido como silenciamiento génico. En algunos casos, los miRNAs de 22 nucleótidos inducen la producción de siRNAs secundarios a partir sus RNAs diana, y estos siRNAs secundarios se desplazan por la planta a corta y larga distancia propagando el silenciamiento. Experimentos previos mostraron que la expresión transitoria en hojas de Nicotiana benthamiana del miRNA artificial (amiRNA) amiR-NbSu-2 de 21 nucleótidos frente al gen SULPHUR inducía silenciamiento sistémico (SS) en hojas jóvenes no agroinfiltradas, además de silenciamiento …

pequeños rnasnicotiana benthamianamicrorna artificial:CIENCIAS AGRARIAS [UNESCO]tasirna sintéticoUNESCO::CIENCIAS AGRARIASsilenciamiento sistémico
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El tratamiento personalizado de la insuficiencia velofaríngea mediante injerto adiposo autólogo de la faringe

2022

La incompetencia velofaríngea (IVP), definida por Lermoyez como un “desajuste anatómico y funcional entre el paladar blando y la faringe durante el habla”, es un problema funcional que requiere una gestión multidisciplinar con un estudio dinámico de las dos estructuras implicadas en el emisión de las palabras mediante la visión directa de los movimientos musculares durante la producción de fonemas. Varios estudios radiológicos han trabajado en la visualización dinámica del cierre velofaríngeo. Pigott fue el primero en introducir la nasofibroscopia en el estudio de la IVP. Ahora, el uso de la resonancia magnética funcional para el estudio del habla está en pleno desarrollo. Éste es un trabaj…

perfect speechinteligencia artificialcirugia pediatricafaringoplastialogopediaUNESCO::MATEMÁTICAS::Estadística ::Análisis de datosUNESCO::MATEMÁTICAS::Ciencia de los ordenadores::Inteligencia artificialUNESCO::CIENCIAS MÉDICAS ::Cirugía ::Otrasmachine learningpalabraUNESCO::LINGÜÍSTICA::Lingüística sincrónica::Fonologíaautoinjerto adiposoUNESCO::MATEMÁTICAS::Estadística ::Teoría y procesos de decisiónUNESCO::CIENCIAS MÉDICASUNESCO::MATEMÁTICAS::Estadística ::Técnicas de inferencia estadísticaUNESCO::CIENCIAS MÉDICAS ::Cirugía ::Cirugía de garganta nariz y oídosinsuficiencia velofaringeaUNESCO::MATEMÁTICAS::Estadística ::Análisis multivarianteotorrinolaringologia
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Tecniche di rilevamento architettonico: innovazione e integrazione

2008

In particolare si pone l’attenzione sulle problematiche della conservazione e del restauro dell’architettura dei primi decenni del ‘900 con nuove tecnologie, approfondendo alcune tipologie e problematiche di degrado più presenti sul materiale. Si propone un caso specifico di intervento su un edificio storico al fine di valutarne lo stato di salute e la durabilità del conglomerato cementizio armato tradizionale operando dei confronti con i nuovi calcestruzzi. Documentando con schede di rilievo tipologico-funzionale e tecnologico e con quadri fessurativi, si presentano i primi risultati delle indagini e delle prove distruttive e non-distruttive su alcune parti più rappresentative delle divers…

pietra artificiale indagini non distruttiveSettore ICAR/17 - DisegnoSettore ICAR/12 - Tecnologia Dell'Architettura
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Metodologie di rilievo metrico e diagnosi materica in edifici storici. Casi studio.

2010

Ancora oggi manca una codificazione di regole da suggerire perché vengano seguite con puntualità per ripristinare e per risanare i monumenti e gli edifici di interesse storico risalenti ai primi anni del secolo scorso, realizzati in calcestruzzo o contenenti parti ornamentali ma anche funzionali in calcestruzzo. E’ prevalsa l’abitudine di trattare questi ultimi come se fossero costruiti secondo le regole dell’odierna tecnica delle costruzioni, senza considerare dunque le differenti caratteristiche che essi presentano a partire dalle metodologie utilizzate per la produzione dei materiali, fino ad arrivare alle differenze di calcolo progettuale. Se da un lato dunque sembra corretto l’utilizzo…

pietra artificiale metodologie di rilievo prove non distruttive calcestruzzo storicoSettore ICAR/11 - Produzione EdiliziaSettore ICAR/17 - Disegno
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PIETRE ARTIFICIALI CEMENTIZIE NEGLI EDIFICI STORICI DI PALERMO. PROPOSTE DI RESTAURO CON TECNOLOGIE E CALCESTRUZZI INNOVATIVI.

2008

La ricerca approfondisce lo studio delle pietre artificiali cementizie presenti negli edifici realizzati a Palermo, tra la fine dell'ottocento ed i primi trent'anni del novecento, con l'obiettivo di proporre metodi, tecnologie di intervento e materiali innovativi per il restauro conservativo di queste.

pietre artificiali
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Active lighting applied to three-dimensional reconstruction of specular metallic surfaces by polarization imaging

2006

International audience; In the field of industrial vision, the three-dimensional inspection of highly reflective metallic objects is still a delicate task. We deal with a new automated three-dimensional inspection system based on polarization analysis. We first present an extension of the shape-from-polarization method for dielectric surfaces to metallic surfaces. Then, we describe what we believe to be a new way of solving the ambiguity concerning the normal orientation with an active lighting system. Finally, applications to shape-defect detection are discussed, and the efficiency of the system to discriminate defects on specular metallic objects made by stamping and polishing is presente…

polarization imagingComputer scienceMaterials Science (miscellaneous)Polishing02 engineering and technologyDielectric[ INFO.INFO-CV ] Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV]01 natural sciencesIndustrial and Manufacturing EngineeringPhotometry010309 opticsImaging Three-DimensionalOptics[INFO.INFO-CV] Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV]Image Interpretation Computer-AssistedMaterials Testing0103 physical sciences0202 electrical engineering electronic engineering information engineeringScattering RadiationSpecular reflectionBusiness and International Managementactive lightingLightingScatteringbusiness.industry[INFO.INFO-CV]Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV]Equipment DesignStampingFresnel equationsPolarization (waves)metallic surfacesEquipment Failure AnalysisMetals020201 artificial intelligence & image processingMicroscopy PolarizationbusinessRefractive indexAlgorithmsshape from polarization
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Power Line Monitoring through Data Integrity Analysis with Q-Learning Based Data Analysis Network

2022

To monitor and handle big data obtained from electrical, electronic, electro-mechanical, and other equipment linked to the power grid effectively and efficiently, it is important to monitor them continually to gather information on power line integrity. We propose that data transmission analysis and data collection from tools like digital power meters may be used to undertake predictive maintenance on power lines without the need for specialized hardware like power line modems and synthetic data streams. Neural network models such as deep learning may be used for power line integrity analysis systems effectively, safely, and reliably. We adopt Q-learning based data analysis network for anal…

power linedata integrity analysis; artificial neural network; Q-learning; power line; monitoringmonitoringVDP::Teknologi: 500Q-learningGeneral Earth and Planetary Sciencesdata integrity analysisartificial neural networkRemote Sensing; Volume 15; Issue 1; Pages: 194
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Explainable AI for Industry 4.0 : Semantic Representation of Deep Learning Models

2022

Artificial Intelligence is an important asset of Industry 4.0. Current discoveries within machine learning and particularly in deep learning enable qualitative change within the industrial processes, applications, systems and products. However, there is an important challenge related to explainability of (and, therefore, trust to) the decisions made by the deep learning models (aka black-boxes) and their poor capacity for being integrated with each other. Explainable artificial intelligence is needed instead but without loss of effectiveness of the deep learning models. In this paper we present the transformation technique between black-box models and explainable (as well as interoperable) …

predictive maintenancesemantic webkoneoppiminenExplainable Artificial Intelligenceylläpitokunnonvalvontasyväoppiminenteollisuustekoälysemanttinen webIndustry 4.0tuotantotekniikka
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