The Rigid-Band Model (or RBM) is one of the models used to describe the behavior of metal alloys. In some cases the model is even used for non-metal alloys such as Si alloys. According to the RBM the shape of the constant energy surfaces (hence the Fermi surface as well) and curve of density of states of the alloy are the same as those of the solvent metal under the following conditions: 1. * The excess charge of the solute atoms localizes around them. 2. * The mean free path of the electrons is much greater than the lattice spacing of the alloy. 3. * The electron states of interest in the pure solvent are all in one energy band, which is greatly separated in energy from the other bands. The only effect of the addition of the solute, given that its valence is greater than that of the solvent, is the addition of electrons to the valence band. This results to swelling the Fermi surface and filling the density of states curve to a higher energy. (Wikipedia).
(ML 13.3) Directed graphical models - formalism (part 1)
Definition of a directed graphical model, or more precisely, what it means for a distribution to respect a directed acyclic graph.
From playlist Machine Learning
(ML 13.4) Directed graphical models - formalism (part 2)
Definition of a directed graphical model, or more precisely, what it means for a distribution to respect a directed acyclic graph.
From playlist Machine Learning
Based on a Youtube video (https://youtu.be/dQyIJUTMpvg). The rails are assembled as one wishes. There are 3 types, linear, curved and helicoidal. I assembled as the video shows. Modeled with Solidworks 2015. Rendered with Simlab Composer 6 Mechanical Edition.
From playlist Wooden Toys
Delta-Star is a polyhedral object which I invented in 1996. The type of Delta-Star corresponds to Deltahedrons. It expands and shrinks.
From playlist Handmade geometric toys
Four-Legs Walking-Machine 3D Model
Based on this site: (http://www.armure.ch/WALKING.htm). Modeled with Solidworks 2015. Rendered with Simlab Composer 7 Mechanical Edition.
From playlist Walking Machines
See-saw Pulling Wooden Toy 3D Model
Based on a picture found on Pinterest (https://br.pinterest.com/pin/445012006901910609/). On the picture, legs are made of rope, I made them solid. Modeled with Solidworks 2016. Rendered with Simlab Composer 6 Mechanical Edition. Free 3D model at https://skfb.ly/6ZL9J.
From playlist Wooden Toys
Delta-Star is a polyhedral object which I invented in 1996. The type of Delta-Star corresponds to Deltahedrons. It expands and shrinks. Especially highly symmetric tetrahedron,octahedron,icosahedron types and hexahedron,decahedron types can transform smoothly.
From playlist Handmade geometric toys
R - Hierarchical Models Examples
Lecturer: Dr. Erin M. Buchanan Missouri State University Summer 2016 This example video covers how to perform a first order CFA, second order CFA, and bi-factor CFA. Lavaan, semPath, and the cfa functions are covered, along with interpretation of the models and some guidance on how to pi
From playlist Structural Equation Modeling
John Maddocks: "The cgDNA sequence-dependent coarse-grain model of dsDNA: Bridging the scales fr..."
Machine Learning for Physics and the Physics of Learning 2019 Workshop III: Validation and Guarantees in Learning Physical Models: from Patterns to Governing Equations to Laws of Nature "The cgDNA sequence-dependent coarse-grain model of dsDNA: Bridging the scales from Molecular Dynamics
From playlist Machine Learning for Physics and the Physics of Learning 2019
Supersymmetry on the lattice: Geometry, Topology, and Spin Liquids by Simon Trebst
PROGRAM FRUSTRATED METALS AND INSULATORS (HYBRID) ORGANIZERS Federico Becca (University of Trieste, Italy), Subhro Bhattacharjee (ICTS-TIFR, India), Yasir Iqbal (IIT Madras, India), Bella Lake (Helmholtz-Zentrum Berlin für Materialien und Energie, Germany), Yogesh Singh (IISER Mohali, In
From playlist FRUSTRATED METALS AND INSULATORS (HYBRID, 2022)
Rudolf Zeidler - Scalar and mean curvature comparison via the Dirac operator
I will explain a spinorial approach towards a comparison and rigidity principle involving scalar and mean curvature for certain warped products over intervals. This is motivated by recent scalar curvature comparison questions of Gromov, in particular distance estimates under lower scalar c
From playlist Talks of Mathematics Münster's reseachers
Physics of functional networks - Henrik Ronellenfitsch
Workshop on Topology: Identifying Order in Complex Systems Topic: Physics of functional networks Speaker: Henrik Ronellenfitsch Affiliation: Williams College Date: March 19, 2021 For more video please visit http://video.ias.edu
From playlist Mathematics
Flying Bird Wooden Toy 3D Model
Based on a Youtube video (https://www.youtube.com/watch?v=C-wjt1zu2zY). The video doesn't show details on the input mechanism, so I made my own. Modeled with Solidworks 2015. Rendered with Simlab Composer 6 Mechanical Edition. Free 3D model at https://skfb.ly/6ZT7P.
From playlist Wooden Toys
Liquid Crystals: Order upon Disorder - Ian Jauslin with Thomas Spencer
https://www.ias.edu/events/ideas-2017-18 More videos on http://video.ias.edu
From playlist Ideas 2017-18
The Controversial Physics of Curling - COLD HARD SCIENCE - Smarter Every Day 111
Patreon Support Link: http://www.patreon.com/smartereveryday Subbable Support Link: http://subbable.com/smartereveryday Tweet this Vid: http://bit.ly/1hf576c Post to FB:http://on.fb.me/1iEpfQ7 Smarter Every Day Infographics are Here: http://smartereveryday.tumblr.com/ Custom Curling Gra
From playlist Smarter Every Day in Order
Guillaume Moroz: Computational real algebraic geometry and applications to robotics - lecture 1
CIRM VIRTUAL EVENT Recorded during the meeting "French Computer Algebra Days" the March 03, 2021 by the Centre International de Rencontres Mathématiques (Marseille, France) Filmmaker: Guillaume Hennenfent Find this video and other talks given by worldwide mathematicians on CIRM's Audio
From playlist Virtual Conference
MIT RES.TLL-004 Concept Vignettes View the complete course: http://ocw.mit.edu/RES-TLL-004F13 Instructor: Dan Frey This video leads students through using linear algebra to model a gear train. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at
From playlist MIT STEM Concept Videos
Investigating Mitochondrial Dynamics in Fission Yeast using Chemical Kinetics by Francois Nedelec
Collective Dynamics of-, on- and around Filaments in Living Cells: Motors, MAPs, TIPs and Tracks DATE: 28 October 2017 to 02 November 2017 VENUE: Ramanujan Lecture Hall, ICTS Bangalore Our knowledge of cytoskeletal filaments, nucleic acid filaments (DNA and RNA) as well as their associat
From playlist Collective Dynamics of-, on- and around Filaments in Living Cells: Motors, MAPs, TIPs and Tracks
Fractals are typically not self-similar
An explanation of fractal dimension. Help fund future projects: https://www.patreon.com/3blue1brown An equally valuable form of support is to simply share some of the videos. Special thanks to these supporters: https://3b1b.co/fractals-thanks And by Affirm: https://www.affirm.com/careers H
From playlist Explainers
Giuseppe De Nittis : Topological nature of the Fu-Kane-Mele invariants
Abstract: Condensed matter electronic systems endowed with odd time-reversal symmetry (TRS) (a.k.a. class AII topological insulators) show topologically protected phases which are described by an invariant known as Fu-Kane-Mele index. The construction of this in- variant, in its original f
From playlist Mathematical Physics