Results 1 to 10 of about 493 (119)

Lead-Free Piezoelectric Acceleration Sensor Built Using a (K,Na)NbO3 Bulk Ceramic Modified by Bi-Based Perovskites [PDF]

open access: yesSensors, 2023
Piezoelectric accelerometers using a lead-free (K,Na)NbO3 (KNN) piezoceramic modified by a mixture of two Bi-based perovskites, Bi(Na,K,Li)ZrO3 (BNKLZ) and BiScO3 (BS), were designed, fabricated and characterized. Ring-shaped ceramics were prepared using
Min-Ku Lee   +2 more
doaj   +2 more sources

Using Metamodeling and Fluid-Structure Interaction Analysis in Multi-Objective Optimization of a Butterfly Valve

open access: yesComputer Assisted Methods in Engineering and Science, 2021
Along with the increase in computing power, new possibilities for the use of parametric coupled analysis of fluid flow machines and metamodeling for many branches of industry and medicine have appeared.
Laura Pałys, Mirosław W. Mrzygłód
doaj   +1 more source

Surrogate Modeling Approaches for Multiobjective Optimization: Methods, Taxonomy, and Results

open access: yesMathematical and Computational Applications, 2020
Most practical optimization problems are comprised of multiple conflicting objectives and constraints which involve time-consuming simulations. Construction of metamodels of objectives and constraints from a few high-fidelity solutions and a subsequent ...
Kalyanmoy Deb   +2 more
doaj   +1 more source

Performance-Driven Yield Optimization of High-Frequency Structures by Kriging Surrogates

open access: yesApplied Sciences, 2022
Uncertainty quantification is an important aspect of engineering design, as manufacturing tolerances may affect the characteristics of the structure. Therefore, the quantification of these effects is indispensable for an adequate assessment of design ...
Slawomir Koziel   +1 more
doaj   +1 more source

Towards an Open Ontology for Renewable Resource Management in Smart Self-Sustainable Human Settlements [PDF]

open access: yesJournal of Universal Computer Science, 2022
This paper proposes an open ontology for self-sustainable human settlements in an effort to set the common language for modelling self-sustainable systems and address the issues regarding heterogeneity of physical devices, protocols, software components,
Igor Tomicic   +2 more
doaj   +3 more sources

Metamodeling and development of information systems

open access: yesAgricultural Economics (AGRICECON), 2004
Metamodeling is becaming an important part of information systems development. When metamodeling we are working with metamodel which define the syntax and the semantics of models. There are a lot of standards for definition of metamodel e.g. COMMA, GOPRR,
M. Pícka
doaj   +1 more source

Performance Comparison of Parametric and Non-Parametric Regression Models for Uncertainty Analysis of Sheet Metal Forming Processes

open access: yesMetals, 2020
This work aims to compare the performance of various parametric and non-parametric metamodeling techniques when applied to sheet metal forming processes. For this, the U-Channel and the Square Cup forming processes were studied.
Armando E. Marques   +5 more
doaj   +1 more source

A Formal Framework for Metamodeling in the Context of MDE [PDF]

open access: yesJournal of Universal Computer Science
Metamodeling is a central concept in Model Driven Engineering (MDE). An important consideration in metamodeling is that secure metamodels are a prerequisite for secure software, since errors in a metamodel lead to errors in its instances (models). Formal
Liliana Favre
doaj   +3 more sources

MULTI-DIMENSIONAL SURROGATE BASED AFT FORM OPTIMIZATION OF SHIPS USING HIGH FIDELITY SOLVERS

open access: yesBrodogradnja, 2020
Surrogate (metamodel) based optimization has numerous potential applications in the field of naval architecture. It is aimed here to establish a methodology for the aft form optimization for minimum viscous resistance, thus the present study is focused ...
Hayriye Pehlivan Solak
doaj   +1 more source

Semantically Valid Integration of Development Processes and Toolchains

open access: yesSystems, 2022
As an indispensable component of today’s world economy and an increasing success factor in production and other processes, as well as products, software needs to handle a growing number of specific requirements and influencing factors that are driven by ...
Joachim Schramm   +3 more
doaj   +1 more source

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