Results 81 to 90 of about 1,845,868 (327)

A mathematical and numerical analysis of the Maxwell-Stefan diffusion equations

Discrete & Continuous Dynamical Systems - B, 2012
We consider the Maxwell-Stefan model of diffusion in a multicomponent gaseous mixture. After focusing on the main differences with the Fickian diffusion model, we study the equations governing a three-component gas mixture. Mostly in the case of a tridiagonal diffusion matrix, we provide a qualitative and quantitative mathematical analysis of the model.
Laurent Boudin, Bérénice Grec, SALVARANI, FRANCESCO   +2 more
openaire   +5 more sources

Geometry‐Based Scan Curve Analysis: Rapid Method for the Evaluation of Scan Strategies in Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This study presents rapid evaluation methods for scan strategies in powder bed fusion (PBF) of polymers with a NIR laser as an example for its application. It uses line buffer‐based calculations and point density fields to predict the performance of four different scan strategies. The methods show promising results in laser‐based PBF of polymer samples,
Simon Leupold, Michael Willeke, Alexander Sommereyns, Matthias Gehring, Parmar Yankit Dineshbhai, Nadine Stratmann, Anna Rosa Ziefuss, Sebastian‐Paul Kopp, Stephan Barcikowski, Michael Schmidt   +9 more
wiley   +1 more source

An Introduction to Hyperbolic Analysis [PDF]

arXiv, 2005
An introduction to Hyperbolic Analysis is presented.
arxiv  

Low‐Velocity Penetration Impact Behavior of Triply Periodic Minimal Surface Strut‐Based Lattices

Advanced Engineering Materials, EarlyView.
Triply periodic minimal surface (TPMS)‐based lattices are gaining attention for their multifunctional properties in applications as aeronautics and automotive, which involve low‐velocity impact loading. This work evaluates the low‐velocity penetration impact behavior of five distinct TPMS architectures.
Lucía Doyle, Javier García‐Molleja, Carlos González   +2 more
wiley   +1 more source

Convergence acceleration of series through a variational approach [PDF]

Journal of Mathematical Analysis and Applications 323 (2006) 63-77, 2004
By means of a variational approach we find new series representations both for well known mathematical constants, such as $\pi$ and the Catalan constant, and for mathematical functions, such as the Riemann zeta function. The series that we have found are all exponentially convergent and provide quite useful analytical approximations.
arxiv  

Book Review: Mathematical analysis and numerical methods for science and technology, Volume\/} 5. {\it Evolution Problems\/} 1 [PDF]

, 1993
Karen A. Ames
openalex   +1 more source

Composites with a periodic structure: mathematical analysis and numerical treatment

Computers & Mathematics with Applications, 1985
AbstractThis paper introduces a systematic approach for the derivation of models that describe the behavior of composites with a periodic structure. A technique for analyzing the accuracy of the models is addressed. Although the theory has been developed for the general, n-dimensional setting, the main ideas in this paper are presented for the 1 ...
Ivo Babuška, R. C. Morgan
openaire   +2 more sources

Facile Synthesis of CuxS Electrocatalysts for CO2 Conversion into Formate and Study of Relations Between Cu and S with the Selectivity

Advanced Functional Materials, EarlyView.
Copper sulfide based electrocatalysts for CO2 conversion are selective for production of formate as major product. Transformations under electrochemical conditions result in significant sulfur loss, and this study examines the nature of how persistent, residual sulfur (observed as surface SO42– species and S dissolved in the electrolyte) can sustain ...
Sasho Stojkovikj, Gumaa A. El‐Nagar, Siddharth Gupta, Metodija Najdoski, Violeta Koleva, Theocharis Tzanoudakis, Frederik Firschke, Peter Bogdanoff, Matthew T. Mayer   +8 more
wiley   +1 more source

Teaching Proof to Future Mathematics Teachers in Mathematical Analysis Classes [PDF]

arXiv
The paper examines the construction of a course in mathematical analysis at a pedagogical university, aimed at developing the ability of future mathematics teachers to detect and solve problems related to finding proofs.
arxiv  

Tension between Intuitive Infinitesimals and Formal Mathematical Analysis [PDF]

arXiv, 2011
We discuss the repercussions of the development of infinitesimal calculus into modern analysis, beginning with viewpoints expressed in the nineteenth and twentieth centuries and relating them to the natural cognitive development of mathematical thinking and imaginative visual interpretations of axiomatic proof.
arxiv