Job Alert 
PhD Candidate (m/f/d): Analysis of Microscopic BIOMedical Images (AMBIOM)
Deadline: 2025-07-31
Location: Germany, Dortmund, Nordrhein Westfalen
Verwaltet von:
#appliedmathematics
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Una alternativa para detectar patrones en señales contaminadas con ruido y otras señales en la misma banda espectral que la deseada, es por medio de un cambio de base en la ventana móvil del espectrograma.
Un interesante método para recuperar la información de archivos corruptos cuando se tiene una base de datos previa.
https://www.europesays.com/uk/190760/ Optical solitons, bifurcation, and chaos in the nonlinear conformable Schrödinger equation with group velocity dispersion coefficients and second-order spatiotemporal terms #AppliedMathematics #Bifurcation #ConformableDerivative #HumanitiesAndSocialSciences #MathematicalModel #multidisciplinary #NewDirectMappingMethod #NonlinearConformableSchrödingerEquation #NonlinearOptics #OpticalSolitonSolutions #Physics #Science #Solitons #UK #UnitedKingdom
A few days back, I posted some #AnimatedGifs of the exact solution for a large-amplitude undamped, unforced #Pendulum. I then thought to complete the study to include the case when it has been fed enough #energy to allow it just to undergo #FullRotations, rather than just #oscillations. Well, it turns out that it is “a bit more complicated than I first expected” but I finally managed it.
Fortgeführter Thread
Here we see three identical pendulums, oscillating independently. The red and purple ones are vibrating with small amplitudes and so their periods are nearly the same. But the blue one is undergoing what would be considered to be very large amplitude oscillations and has a significantly longer period. In fact, as the amplitude approaches π radians, the period increases without bound and approaches infinity.
Fortgeführter Thread
The above is only strictly true for “small” amplitudes. If the #pendulum is subject to large amplitudes, it is no longer governed by the simple linear differential equations alluded to above. Given that the rod remains rigid and no energy is dissipated, the pendulum #equations may still be solved exactly, though they are now #nonlinear.
In elementary #mechanics we are taught about the #SimplePendulum, which is modelled as a point #mass hanging via a rigid #rod or #string of a given length, under uniform #gravity. This simple model is also useful in introducing #OrdinaryDifferentialEquations and helps us to understand #SimpleHarmonicMotion.
Job Alert 
Tandem Professur (W1 LBesO) Sichere Software Systeme
Deadline: 2025-05-26
Location: Germany, Zweibrücken, Rheinland Pfalz
The analysis of artificial intelligence knowledge graphs for online music learning platform under deep learning https://www.byteseu.com/1004938/ #AI #AppliedMathematics #ArtificialIntelligence #ComputationalScience #ComputerScience #DataSparsity #FeatureFusion #HumanitiesAndSocialSciences #InformationTechnology #KnowledgeGraphs #MathematicsAndComputing #multidisciplinary #MusicRecommendationSystem #PureMathematics #Science #ScientificData #software #statistics
Job - Alert
#PhD Position (f_m_x) – Uncertainty Analysis of Coupled Reactive Transport Models
Deadline: 2025-05-27
Location: Germany, Potsdam, Brandenburg
I cannot think of an applied mathematics that is more beautiful and far-reaching, or philosophically wilder, than probability. No, nonlinear dynamics and chaos people, it’s not even close 
#probability
#mathematics
#appliedmathematics
#philosophy
#philosophyofscience
@philosophy@newsmast.community
@philosophy@a.gup.pe
We’re having a #Soliton sale over here! Get yours quick! Seriously, though, this is a quick #animation of the #SolitonInteraction surface – the solution of the #Korteweg-deVries #Eauation showing (x,t,u(x,t)) giving you an all-round view.
I posted on #Soliton interactions in the #Korteweg-deVries #Equation yesterday with an #Animation of how two #SolitaryWaves interact. The #PhaseShift experienced by both can also be seen in a static #3D plot with time, t, plotted on one axis. You should be able to see a “dog-leg” in the trajectory of each wave after it interacts with the other.
Fortgeführter Thread
A subtlety probably difficult to spot in the animation is that the interaction of the two waves leaves them phase shifted, with the taller wave gaining position, while the shorter one loses it. This further animation shows the interactions again (purple) but I’ve also shown what would happen if each wave moved without interaction with the other (red and blue).
Fortgeführter Thread
Here is an example taken from Solitons: an introduction by Drazin & Johnson, where taller wave overtakes a shorter one moving in the same direction.
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Fortgeführter Thread
When you start looking at #NonlinearWaves, some of these principles no longer apply. For example, in the Korteweg-de Vries equation, which has #Soliton or solutions, you can no longer simply add two solutions together as the resulting function would not be a solution of the governing equation. Waves of different heights travel at different velocities, with the taller waves moving faster than the shorter ones. Instead, they interact #nonlinearly.
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Fortgeführter Thread
Also, waves of different heights travel at different velocities, with the taller waves moving faster than the shorter ones.
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In #FluidMechanics, things like #SurfaceWaves are often modelled using #LinearEquations, which give rise to phenomena such as the principle of #LinearSuperposition, where you can take two or more distinct solutions and simply add them together to get a new solution. Solutions are also periodic and can be decomposed into sinusoidal functions.
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“My PhD was all about understanding what happens to blood flow in collapsible blood vessels like the giraffe jugular vein. In my postdoc I was investigating how to optimise ventilator settings for patients in ICU and then how to deliver inhaled therapies into the lungs. Since then, my focus has been in trying to understand how diseases like Asthma and other respiratory diseases originate and then progress. This involves incorporating biology and physics into mathematical and computational models, using approaches from different areas of applied maths. More recently I have started to look into the mechanisms that could lead to a rare lung disease called lymphangioleiomyomatosis (LAM) and Long Covid.” - Bindi Brook
