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Athanasios Paraskevopoulos


Hellenic Open University

Last seen: 1 dag ago |  Active since 2023

Followers: 1   Following: 3

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Athanasios is a Teacher of Mathematics with a proven track record of working in education management. Proficient in Ease of Adaptation, Course Design, and Instructional Technology. Strong education professional with a Bachelor's degree with an emphasis in Mathematics from the University of Aegean. Currently, he is pursuing a Master's degree in Applied Mathematics at the Hellenic Open University, with a specific focus on Ordinary and Partial Differential equations. His enthusiasm lies in the application of mathematical models to real-world contexts, such as epidemiology and population growth.

Programming Languages:
MATLAB
Spoken Languages:
English
Pronouns:
He/him
Professional Interests:
Mathematics, Numerical Integration and Differential Equations, Partial Differential Equation Toolbox, Stochastic Differential Equation (SDE) Models, Applied Mathematics

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Representation of Gabriel's Horn
By reading the following very interesting paper An Understanding of a Solid with Finite Volume and Infinite Surface Area. ...

4 dagen ago | 1 answer | 0

1

answer

Answered
nonlinear dynamics(Measure synchronization)
Let's first correct and complete the provided code. We need to make sure that the equations, integration, and plot functions are...

ongeveer een maand ago | 0

Answered
How to take input values from users symbolically while running a code?
I think this is what you asked for % Function to generate rotation matrix rot_matrix = @(axis, theta) cos(theta) * eye(3) + .....

ongeveer een maand ago | 0

Answered
Plotting the Evolution of Spatially Localized Initial Conditions for Discrete Klein-Gordon Equation
% Parameters L = 200; % Length of the system K = 99; % Number of spatial points omega_d = 1; % Characteristic frequency b...

ongeveer 2 maanden ago | 0

| accepted

Question


Plotting the Evolution of Spatially Localized Initial Conditions for Discrete Klein-Gordon Equation
Ιn continuation of the study with which I have been fascinated Numerical Simulation of a Damped, Driven Nonlinear Wave System wi...

ongeveer 2 maanden ago | 1 answer | 0

1

answer

Answered
Plot legend goes behing plot axes when using tiledlayout
The issue you are experiencing with legends disappearing behind the axes when moved in a tiledlayout can be addressed by setting...

ongeveer 2 maanden ago | 0

Answered
Crank-Nicholson method
The main issue with your code is in the line where you solve the linear system A⋅unew​=b. The correct approach is to solve for 𝑢...

ongeveer 2 maanden ago | 0

Answered
Numerical Simulation of a Damped, Driven Nonlinear Wave System with Spatially Extended Initial Conditions
I found it i should remove the discretization parameter because in the following. I understood that @William Rose Thank yo...

2 maanden ago | 0

| accepted

Question


Plotting Phase Portrait of Duffing Equation
I study a paper that describes a stationary problem where the function satisfies the boundary conditions and is governed by a m...

2 maanden ago | 1 answer | 1

1

answer

Question


Numerical Simulation of a Damped, Driven Nonlinear Wave System with Spatially Extended Initial Conditions
The study of the dynamics of the discrete Klein - Gordon equation (DKG) with friction is given by the equation : In the abov...

2 maanden ago | 1 answer | 0

1

answer

Answered
Ayers 'Differential Equations Problem 4
syms x y(x) C % Define the differential equation dy_dx = diff(y, x); ode = 4*x*dy_dx^2 + 2*x*dy_dx - y == 0; % Solve the...

2 maanden ago | 0

Answered
plot of riemann surface
To plot a complete Riemann surface for the function, you need to consider the nature of the complex square root function and how...

2 maanden ago | 0

| accepted

Answered
Custom colorbar labeling centered on colors
I tried the folowing code! It is similar with your second graph, but I could replicate the arrows correct. You can edit the cod...

2 maanden ago | 0

Answered
fitcdiscr bug: Why does "ClassNames" now have to be provided in alphanumerical order otherwise accuracy is terrible?
Code with Issue: load fisheriris Mdl = fitcdiscr(meas, species, "ClassNames", flip(unique(species, "stable")), "KFold", 10); ...

2 maanden ago | 0

Answered
plotting the bifurcation diagram of Duffing oscillations in the (x1, omega) plane?
function dx = duffing(t, x) global alpha delta beta F omega dx = [x(2); -delta * x(2) - alpha * x(1) - beta...

2 maanden ago | 0

Answered
How to solve SIR model with using DTM (Differential Transform Method)
function sir_model_dtm() % Parameters alpha = 0.3; % Infection rate beta = 0.1; % Recovery rate N = 1...

2 maanden ago | 0

Answered
Display in the command window
startUpHeight = 299.07; startUpValue = 100; radius = 15; minConstraintX = 50; % Swapped values maxConstraintX = 150; % Sw...

2 maanden ago | 0

| accepted

Question


Population Growth Model Analysis
Below I tried to solve Population Growth problem, I provide you the mathematical solution. Also, I create MATLAB code, however i...

2 maanden ago | 1 answer | 0

1

answer

Answered
frequency equation for multiple degree freedom system
% Define the mass matrix M M = diag([1.8, 6.3, 5.4, 22.5, 54.0]); % Define the damping matrix C C = [10000, -10000, 0, 0, 0...

2 maanden ago | 0

Answered
Solving logistic ode for bacterial population growth
% Parameters r = 0.002; % per second K = 50000; % carrying capacity (assuming a value, as it is not provided) N0 = 1000; %...

2 maanden ago | 0

Question


Selecting appropriate values for the parameters in the Gierer-Meinhardt activator-inhibitor model
For the following activator-inhibitor system (Alfred Gierer-Hans Meinhardt model), with all constants positive and initial ...

3 maanden ago | 2 answers | 0

2

answers

Question


Plotting Damped Nonlinear Oscillator
The given system is a damped nonlinear oscillator with a nonlinear resistance, described by the differential equation: where ...

3 maanden ago | 1 answer | 0

1

answer

Question


Discrete Population Growth Model Plot
Use the detailed, discrete model for population growth that follows a variation of the logistic law: with . Calculate the p...

3 maanden ago | 0 answers | 0

0

answers

Question


Plotting discrete Klein - Gordon equation (DKG) with friction in DNA
I am exploring the dynamics of the discrete Klein - Gordon equation (DKG) with friction is given by the equation : In the ab...

3 maanden ago | 1 answer | 0

1

answer

Answered
Calculating the radius of a link budget
Hello! To calculate the cell radius of a link budget, particularly in a telecommunications context like satellite communications...

3 maanden ago | 0

| accepted

Solved


Laws of motion 1

4 maanden ago

Answered
Why isn't my MATLAB plot not showing up?
It looks like the issue with your MATLAB code is related to how you've set up the ranges for plotting the IV curves. In MATLAB...

4 maanden ago | 0

Solved


Matrix multiplication
Multiply two incoming matrices via matrix multiplication

4 maanden ago

Solved


Calculate Amount of Cake Frosting
Given two input variables r and h, which stand for the radius and height of a cake, calculate the surface area of the cake you n...

4 maanden ago

Solved


Add two numbers
Given a and b, return the sum a+b in c.

4 maanden ago

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