Phyein Usul

Phyein Usul · φύειν أصول, roots that grow. A personal website and an archive: my work, notes and simulations kept in one place, the older pieces beside what grew from them.

NumaKoudsie.

Physics graduate with expertise in data analysis, modeling, and software development, and experience in the production of energy storage and distribution systems.

Leipzig, Germany numakoudsie@gmail.com github.com/Numa1997
See positions Open the simulations Research portfolios
Fig. 0 · double pendulum · RK4 · live

Positions

02.2023 – present current minijob

Data & Web Management

Dhillons Irish Pub and Grill

  • Automated inventory tracking, website development
  • Data-driven sales analysis
  • Serving and waiting customers and tables respectively

10.2025 – 08.2026

Team Coordinator

Skeleton Technologies Superfactory, Markranstädt

  • Production line coordination, personnel and machinery supervision
  • Quality tests for cross checking the physical tolerances imposed on products coming out of the line
  • Database, dashboard, and report development, building, and generation respectively for test results

08.2024 – 02.2025

Research Assistant

Georg-August-Universität Göttingen

  • GRU networks for behavior prediction (lemurs); tensor-based data organization
  • Analysis and report generation based on several different datasets

10.2024 – 01.2025

Teaching Assistant

Saxony International School Reinsdorf

  • Bilingual instruction of classes 6, 8, 9, 10, and 12 in Physics and natural sciences
  • Development of web react elements and simulations of basic physical phenomena

07.2022 – 12.2022 during studies

Model Developer

University of Leipzig & TROPOS

  • Python simulations for water/ice particle coalescence; synthetic data analysis

02.2021 – 04.2022 during studies

Systems Analyst

Faiveley Transport

  • Cooling system analysis (R134a, R290); DIAdem integration for automated data processing
  • Building AND/OR gates operations to specify component-wise power consumption of the system

10.2018 – 09.2019 during studies

Research Assistant

Carl von Ossietzky University of Oldenburg

  • Laser-Induced Breakdown Spectroscopy (LIBS) on lake sediments; atomic emission spectra analysis

Education

10.2020 – 12.2022

B.Sc. Physics

University of Leipzig

Focus: computational physics

09.2019 – 07.2020

Erasmus+ Program

University of Groningen

10.2017 – 10.2019

Engineering Physics

Carl von Ossietzky University of Oldenburg

117 CP

Research projects

Completed projects, rebuilt in full with their derivations, solver and checks, are on the Portfolios page: the Bachelor thesis on how cloud droplets become rain, and a corrected study of whether a pendulum on a turbine blade can power a sensor.

Ongoing · computational

Lemur Behavior Analysis

  • Synthetic data generation for lemur interactions
  • GRU neural networks for behavioral sequences
  • Current focus: pattern recognition in social behaviors

Completed · computational

Drop Population Dynamics

  • Mathematical framework: Vi* = Cij Vj
  • System energy optimization for equilibrium modeling

Completed · computational

Cellular Mechanics

  • Stochastic differential equations for viscoelastic properties
  • Step-strain protocols for complex modulus estimation

Portfolios →

Interactive physics simulations

Visualizations of wave mechanics, classical mechanics, and interference, written in vanilla JavaScript, React, and HTML5 Canvas. Each plate opens the live simulation in a new tab. The simulations page lists them all by field, with the question each one answers and a search.

Fig. 1

Wave Interference – Multiple Sources

Constructive and destructive interference from several point sources. Click to add sources and watch circular waves combine into straight wavefronts.

HTML5 CanvasVanilla JavaScriptHuygens' principle
Launch

Fig. 2

Double Pendulum Chaos

Chaotic dynamics with adjustable mass ratios, lengths, and initial conditions. Tiny changes in the starting angles produce completely different trajectories.

RK4 integrationCanvasChaos theory
Launch

Fig. 3

Double-Slit Interference

The classic experiment, step by step. Adjust slit separation and viewing angle to see how the path difference builds the interference pattern.

ReactSVGWave–particle duality
Launch

Fig. 4

Transverse & Longitudinal Waves

Compare the two kinds of wave propagation side by side. Adjust amplitude, frequency, and wavelength to see how each property shapes the motion.

SVG animationVanilla JavaScriptOscillations
Launch

Fig. 5

Circular Water Waves

Water particles tracing circular orbits as the crest passes through, with the orbits shrinking quickly with depth.

HTML5 CanvasVanilla JavaScriptParticle motion
Launch

Fig. 6

Wave Interference Simulator

A multi-wave workbench. Add waves with different frequencies, amplitudes, and phases and watch the resulting sum in real time.

SVGReal-time plottingFourier analysis
Launch

Fig. 7

Phasor Sums – Epicycles & Roses

Rotating complex numbers added tip to tail. Roses, beats and spirographs from a few circles, with live period and symmetry readouts; an audio file can make the arms dance.

HTML5 CanvasWeb Audio APIComplex phasors
Launch

Fig. 8

Draw & Decompose – Fourier Epicycles

Draw any closed shape; a discrete Fourier transform turns it into spinning circles that redraw it, with Parseval's theorem checking the error live.

HTML5 CanvasDiscrete Fourier transformParseval's theorem
Launch

All simulations →

Skills & languages

Programming
Python, SQL, MATLAB, Julia, HTML/CSS/JS
Data analysis
Pandas, NumPy, SciPy, TensorFlow, PyTorch
Visualization
Plotly, Matplotlib, D3.js, HTML5 Canvas
CAD & analysis
Autodesk Inventor, SolidWorks, AutoCAD, DIAdem
Tools
Git, Jupyter, VS Code, Linux
Domains
Computational physics, numerical modeling, dashboards, quality control, database architecture
Languages
Arabic native · English C1 · German B2