Results 81 to 90 of about 5,689,395 (335)

Optlang: An algebraic modeling language for mathematical optimization

Journal of Open Source Software, 2017
(16/12/2018) Optlang: An algebraic modeling language for mathematical optimization Optlang is a Python package implementing a modeling language for solving mathematical optimization problems, i.e., maximizing or minimizing an objective function over a ...
Kristian Jensen, João G. R. Cardoso, Nikolaus Sonnenschein   +2 more
semanticscholar   +1 more source

A Simulative Approach for the Prediction of Mesoscale Residual Stress Fields in Solution‐Strengthened Ferritic Ductile Iron

Advanced Engineering Materials, EarlyView.
This study presents a 3D representative volume element‐based simulation approach to predict mesoscopic residual stress and strain fields in silicon solid solution‐strengthened ductile cast iron. By modeling phase transformation kinetics with an enhanced Johnson–Mehl–Avrami–Kolmogorov model, the effects of varying cooling rates on residual stresses are ...
Lutz Horbach, Oliver Schenk, Valérian Iss, Ali Rajaei, Jiali Zhang, Felix Weber, Christoph Broeckmann   +6 more
wiley   +1 more source

Application of the Crow Search Algorithm to the Problem of the Parametric Estimation in Transformers Considering Voltage and Current Measures

Computers, 2022
The problem of the electrical characterization of single-phase transformers is addressed in this research through the application of the crow search algorithm (CSA).
David Gilberto Gracia-Velásquez, Andrés Steven Morales-Rodríguez, Oscar Danilo Montoya   +2 more
doaj   +1 more source

Mathematical Modeling and Optimization of Industrial Problems [PDF]

Journal of Applied Mathematics, 2015
Optimization plays an ever-increasing role in mathematics, economics, engineering, health sciences, management, life sciences, and almost all other fields of study. Many optimization problems exist in the real world including space planning, networking, logistic management, financial planning, and risk management.
M. Montaz Ali, Aderemi O. Adewumi, Nachamada Blamah, Olabisi Falowo   +3 more
openaire   +3 more sources

Toughness of Confined Auxetic Foams

Advanced Engineering Materials, EarlyView.
Auxetic (negative Poisson's ratio) materials offer benefits such as impact mitigation, thermal insulation, vibration damping, and reduced shear strain, although their fracture mechanics are largely unexplored. This study investigates damage initiation and propagation in confined re‐entrant auxetic foams from polyurethane via experimental ...
Adrianos E. F. Athanasiadis, Oliver Duncan, Michal K. Budzik, Marcelo A. Dias   +3 more
wiley   +1 more source

Existence of solutions for discontinuous systems of Stieltjes differential equations

Electronic Journal of Qualitative Theory of Differential Equations
We introduce new transversality conditions in terms of derivatives with respect to a nondecreasing function $g: \mathbb R \longrightarrow \mathbb R$, and we use them to prove the existence of solutions for discontinuous systems of Stieltjes differential ...
Víctor Cora, Rodrigo López Pouso
doaj   +1 more source

σ-porosity in monotonic analysis with applications to optimization

Abstract and Applied Analysis, 2005
We introduce and study some metric spaces of increasing positively homogeneous (IPH) functions, decreasing functions, and conormal (upward) sets. We prove that the complements of the subset of strictly increasing IPH functions, of the subset of strictly ...
A. M. Rubinov
doaj   +1 more source

Model-Based Simulation of Maintenance Therapy of Childhood Acute Lymphoblastic Leukemia

Frontiers in Physiology, 2020
Acute lymphoblastic leukemia is the most common malignancy in childhood. Successful treatment requires initial high-intensity chemotherapy, followed by low-intensity oral maintenance therapy with oral 6-mercaptopurine (6MP) and methotrexate (MTX) until 2–
Felix Jost, Jakob Zierk, Thuy T. T. Le, Thomas Raupach, Manfred Rauh, Meinolf Suttorp, Martin Stanulla, Markus Metzler, Sebastian Sager, Sebastian Sager   +9 more
doaj   +1 more source

A Simulative Evaluation of Triply Periodic Minimal Surface Structures in the Context of Elastocaloric Applications

Advanced Engineering Materials, EarlyView.
A simulative evaluation of triply periodic minimal surface (TPMS) structures for an elastocaloric application under compressive load is performed. For the evaluation of the structure's performance, surface/volume ratio, generated heat and invested mechanical work are taken into account and are compared to a tube as a reference specimen.
Michael Fries, Paul Motzki, Dirk Bähre, Anne Jung   +3 more
wiley   +1 more source

Determination of the two-dimensional distributions of gold nanorods by multiwavelength analytical ultracentrifugation

Nature Communications, 2018
Characterization of nanoparticles is a complex and important problem for the vast number of applications that require them. Here, the authors present a method to uncover the two-dimensional distribution of length and diameter of anisotropic nanoparticles
Simon E. Wawra, Lukas Pflug, Thaseem Thajudeen, Carola Kryschi, Michael Stingl, Wolfgang Peukert   +5 more
doaj   +1 more source