MATLAB - Science topic

can you help me please

I hope this message finds you well. I am reaching out to share a recent implementation of realtime image dataset creation using MATLAB, which I believe offers significant potential for practical applications in computer vision, machine learning, and data science. Our implementation focuses on capturing and processing images in real-time, which could be beneficial in areas such as object detection, surveillance, healthcare, and robotics.

Given the growing importance of real-time data processing in research and industry, I am exploring the possibility of publishing a research article that outlines the methodology, experimental setup, and potential applications of this implementation. Furthermore, I am actively seeking potential collaborators who may be interested in contributing to my extending this work.

Hello everyone

I have two components, A and B, each made from distinct materials.These components are in contact with one another under specific boundary and loading conditions. Considering this contact, can I conduct a finite element analysis using MATLAB's Partial Differential Equation (PDE) Toolbox?

I haven't found a command to define the contact between the two parts, and most of the examples I've seen only address simple analyses of individual components.

I would greatly appreciate any assistance with this. THANK YOU!

I hope this message finds you well. My professor and I are looking for a skilled and advanced programmer proficient in Python and MATLAB to join our research group. Our focus is on publishing high-quality, Q1 papers in the field of Artificial Intelligence-based Structural Health Monitoring in Civil Engineering.

If you are passionate about research, enjoy publishing, and have sufficient time to dedicate to our projects, we would be delighted to invite you to join us.

Please send your CV to hosein_saffaryosefi@alumni.iust.ac.ir .

Best regards, Hossein Safar Yousefifard School of Civil Engineering Iran University of Science and Technology

What is the Matlab code the future state-dependent system: $\frac{du}{dt} = a*u - u(t)^3*v(t+\tau), \frac{dv}{dt} = k + u^2(t+\tau)*v^2(t)$, where $a$ and $k$ are constants?

I am working on a reflectarray design using CST. I have a Matlab code that works perfectly for designing the reflectarray, but I'm having trouble designing different shape array elements. It would be helpful if you could assist me in designing different shapes of single units in Matlab code.

Regards

Sunanda

I have x ray CT data of fibre reinforced composite. My intention is to find and the bunch the fibre orientation of single fibres .I am okay with a python or Matlab script .I can make use of imagej and avizo .

Hello everyone

I am new to MATLAB and would appreciate some assistance. I am currently working on an optimization problem that involves finite element analysis. I have two parts A and B that are in contact with each other. Each of these parts is made of a different material and has its own properties. I want to find out how the distribution of relative density in part A affects the distribution of stress and strain energy in part B. I think this is a simple FE problem. But I've never solve such problem through MATLAB before. My question is that “Is it possible to do this through MATLAB? If so, how complex is the coding process for this problem?”

Thank you in advence

I have a system of three nonlinear equations and three unknowns. I have solved it by hand and by matlab function, fsolve also. Now, if I have a system of four nonlinear equations and three unknowns; the matlab function, fsolve is not able to find any solution. Is there anyway to solve it?

I am trying to create an antenna array while optimizing the simulation time in case I eventually decide to work with a much larger network in terms of the number of elements.

We know that Etotal = E_element x array factor

My question is how to export the radiation pattern of an element from CST so that I can import it into MATLAB and calculate E_element?

Thank you in advance for your help!

my specific question is that how can i work on ML based converter in matlab?Please help me.

Briefly, each UE trains a local FL model with its collected data and then sends the trained FL model to an edge server at the gNB which aggregates the FL models and transmits it back to all the UEs. I plan to use MATLAB/Python for federated learning and NetSim for 5G simulation. (i) How can we establish a connection between NetSim and Python for this kind of application? (ii) Which KPIs should I monitor to assess the performance of federated learning?

Normalization of complex matrix using MATLAB

In your opinion, which programming language would you suggest as the best choice for researchers specializing in hydrology and water resources?

Renewable energy systems simulation courses (electric cars)

I've done this, but the results don't make sense. I want to run it for high Reynolds numbers, like 10000, and eventually calculate the energy spectrum, but the results are not reasonable. Could you help me with this?"

I got an problem solving a MIQCP: I want to cut my feaseable region into to spaces with a quadratical constraints (half circle). For points inside my half circle there is no problem, but the area outsid is a non-convex one. I use disjunctive programming to activite only one of the constraints. Is there any way to solve such a problem with Cplex in Matlab (cplexmiqcp())? Would be very grathefull if someone have experience with such a problem and can share his knowledge with me :)

Best regards,

Jannik

Ondes, sensor...

When I attempt to run OpenSEES using the command 'system(['opensees.exe<',filename])' in MATLAB, the command is skipped and not executed. However, I can successfully run the command directly from the OpenSEES.exe command window. Furthermore, I was previously able to execute it on a different computer. This behavior is quite perplexing.

Any other TWO (2) genetic algorithms

Expected results from the Matlab codes for optimization

a. Display Optimal value for the function

b. Display Optimal values for the variables

c. Display graph of optimal values vs number of iteration

d. Display graph of each variable vs number of iteration

I attached the paper here.if you plot these equations , the result will be figure 1 in the paper . i need the matlab code.

Any one kindly help me to get bifurcation diagram of rational system 1/(1-ax-bx^2) in matlab.

Locating neural network fitting App in Matlab 2024a

Dear Fulden: I am starting to use the Simbiology interface of MAtlab and I found out online that you are a specialist in its use. I wish to ask you a question.

I have already learned to create kinetic models in Simbiology and do simulations by providing values for the parameters. However, I cannot see how to simulate in the interfase the time course of a reaction such as, for example, A + B <-> C, starting simultaneously with different initial concentrations of A, keeping the initial concentration of B constant.

Thanks a lot

Sergio B. Kaufman

(sergiobkaufman@gmail.com)

How can I get a MATLAB code of Haar wavelet Collocation method for solving partial differential equations?

i open eeglab in matlab and import my data but event value don't work?

can you help me please

Is is correct to convert .raw to .jpg file extension and than calculate the intensity profile

how do i go about implementing k means clustering with the LEACH protocol ? can someone give me directions as to how to implement k means clustering with LEACH protocol in matlab

Hi,

I want to collect data for 120 Hz in simulink real time simulation to have sample time same as the controller. But i am getting error for sapmle time less than 0.01 and even for 0.01 sample time the result i got had 0.02 sec interval in data points.

Thanks

I ran a MATLAB model, and the signal appeared on the scope. How can I:

1. Shift the signal to start at zero.

2. Delete the first 4 seconds of the signal.

3. Ensure the signal starts at zero after trimming the first 4 seconds.

I'd appreciate any advice or sample code on how to accomplish these tasks in MATLAB. Thank you in advance for your help!

Hi, I'm seeking a #MATLAB course from a credible provider that offers a certificate suitable for my CV. I'm based in Chicago, USA, and I'm interested in both in-person and online options, as well as MS degrees in #Computational_Neuroscience.

Dear all,

I am working on running Autodesk Inventor through MATLAB, with the primary goal of operating Inventor in batch mode. My objective is to select design parameters in MATLAB, write them to an Excel file, and then use these parameters to generate the structure in Inventor's batch mode, followed by exporting the geometry. The reason for using batch mode is that a large number of design parameters will result in the generation of thousands of geometries, requiring the process to be automated for higher computational efficiency.

Thank you in advance for your assistance!

can any one provide OHAM analysis method in matlab for 9th order differential equations with 9 boundry condition

Error 1:Invalid setting for output port dimensions of 'fccu/Mux6'. The dimensions are being set to 1. This is not valid because the total number of input and output elements are not the same

Error2:Error in port widths or dimensions. 'Input Port 1' of 'fccu/Zero-Order Hold' is a one dimensional vector with 1 elements.

ECRTool is a Matlab based software tool for plotting Electrical Conductivity Relaxation graphs.

The variable frequency method for resonance inverter MATLAB or PSIM basic simulation for the general concept is also appreciated.

The application is Induction heating. The system must operate on a switching frequency closer or less than the resonance frequency for desired power levels.

For ANN, i already go through matlab software but I have no idea how to use this and from where I get this software. Also Suggest any other software name that are available for statically cross check RSM.

Time-Frequency Domain

For my master thesis, I am working on Mobile Laser Scanner data which my duty is Extraction of Powerlines Poles. My data is about 10 Kilometers long and has approximately 60 the powerline poles. Fortunately, my algorithm has extracted 58 the poles correctly and two others poles were not completely extracted by Mobile Laser Scanner system which caused proposed algorithm can not extract them. The proposed algorithm is completely automatic and does not need many parameters for extraction.

My main question is that which circumstances do need my implementation to be published in a good ISI journal?

I have collected a signal from vector network analyzer by placing food product in between a couple of antennas in which 1 antenna acts as transmitter and one acts as receiver. i want to convert the collected signal to tomographic image of the food product placed in between the antennas. I'm unable to understand the process how to convert a S21 (real and imaginary format) signal to tomographic image, is it possible to reconstruct the tomographic image of the product from the single signal. i want to reconstruct the tomographic image of the food product placed in between the 2 antennas in MATLAB using reconstruction algorithm. please help me in my project.

Please, what is the memory consumption of the Matlab function quad tree decomposition procedure [S = qtdecomp(I)] with respect to the input set I?

Hello,

I am a research scholar currently working on a project involving image segmentation, and I am interested in using differential evolution for this purpose . I would greatly appreciate it if anyone could share recent year MATLAB code(examples: 2024,2023,2022,2021,2020,2019) or resources related to implementing differential evolution for multilevel thresholding image segmentation .

Specifically, I am looking for:

Thank you in advance for your assistance

I want to determine the area of both hysteresis curves (Red and Green one) and to compare the energy dissipation capacity of both hysteresis.

Sampling (image)

Hi, I am working on a 3D model of a 17-story building using SAP2000 and need to extract the stiffness matrix for each floor of my model[17*17].

Could anyone provide a detailed explanation or a step-by-step guide on how to accomplish this? Any tips on the necessary commands or scripts to use within SAP2000 or another way to have that matrix would be greatly appreciated.

Thank you in advance for your help!

Best regards,

I am running studies on EEGLAB. In the current grouping, I am plotting the average topography over different frequency ranges. I have EEGLAB compute the statistics and add that to the figure as pictured in the attached file. I am not running ERPs. This is only a two minute period where no stimulus was being used. The average that is being plotted is the spectra. I know that they must store the data in some variable, but I cannot find the values used to make this plot in the Matlab workspace. Is there an easy way to recall the values for specific locations, or is there some way to transform the values on the figure to get the precise p-value? I need to report a value, not just what I assume is the color variation. I would appreciate some guidance on this.

Hello!!! I want to implement the Swerling characteristics functions (CF) directly in MATLAB without using its Fourier integral pairs...the Swerling CFs are actually Laplace Transform of the signal PDF. is there anyway we can directly measure the probability of detection from Swerling0 CF...(all other parameters provided like SNR, Number of pulses)

Example: the swerling0 CF is exp[-N*x*(s/s+1)]/(s+1)^N (x is SNR, N is number of pulses which in slow fluctuation case will be 1). how can we handle "s" in this equation it is transformation variable. it has real and imaginary parts both...Any one can help me directly implementing this CF in MATLAB...I have to make a Confluent Hypergeometric function from this CF

Actually, I'm having trouble implementing the plot of the flutter region for the whirl prop system with 2 DOF  (Influences of structural damping and propeller—pivot point distance on whirl flutter stability) and  My plot isn't getting a hump.

However, What I am most doubtful about is the method of calculating the moment of inertia of the rotor disk, angular frequency and torsional Stiffnesses.  But not sure if the length of the pylon and the radius of a rotor disk impact the angular frequency or stiffness.

Attached you can check my MATLAB script.

I would highly appreciate any suggestions you might have

Can anybody please help me to run a global macro (e.g. Run Macro>> Materials>>Define Human Material Properties) from matlab? in CST help there is a command

RunMacro ( string macroname )

which in matlab will should be (from my idea)

cst = actxserver('CSTStudio.application');

mws = invoke(cst, 'NewMWS');

invoke(mws, 'RunMacro', 'macroname')

but matlab can not find the macro even though I put the path of the macro in the installation path of CST.

I'm a PhD student currently working on fractional calclulus. I am in need of a program written in any of MAPLE, MATLAB, Python or any other programming language using operational matrix of Shifted Legendre polynomial(or any other orthogonal polynomial) and Atangana-Baleanu fractional derivative of soling ODEs/PDEs that i can understudy and use for my research work. Thanks

I have a 3D output in the figure section of Matlab, does anyone know a way to transfer it to Abaqus or Ansys?

Or in what format should I save it so that these analysis software can analyze it?

Hello, guys. I have some data points. When I plot these points in Matlab, it connects data points by line. However, I want to connect these points using a curve instead of a line graph for good representation. So please suggest to me which function we should use.

Thank you.

I am working on some .edf files.

I try to extract the frequency distributions from the EEG waves.

The thing is, which i can't be sure if it is a problem or not, the most dominant frequency appears to be 0.39 hz always.

I can remove/change it with bandpass or other filters, but i am not sure if i am missing some important point here.

I used to work on patch-clamp data and this is my first time working with EEG data, just checking the waters for a possible collaboration. I can't be sure if this 0.39 hz is a noise, or something that i do wrong, or is it just how Welch - Fourier works.

I just have the common knowledge that the common low frequency delta waves are 0.5-4 hz and that makes me think. But also, i see on various papers on the internet that the lower-low frequences seems to have a similar peak.

I am sharing single position EEG data from 4 different recordings, although all positions have the similar peak at 0.39 hz. Fs was 200 hz.

Matlab code:

win = hamming(1024);

nfft = 1024;

noverlap = nfft / 2;

[px, f] = pwelch(waveseq, win, noverlap, nfft, Fs);

plot(f, 10 * log10(px))...

Hi, I am looking to link MATLAB to Aspen Adsorption. I know that for Aspen Plus, it is possible to use actxserver(). Does anyone know if the same method can be used for Aspen Adsorption as well?

But i have Aspen Adsorption linking with Excel VBA code is here, if you have any matlab code please share ..

Sub aspenaAdorption()

' Declare variables for the ACM application, document, and simulation

Dim ACMApp As Object

Dim ACMDocument As Object

Dim ACMSimulation As Object

' Create an instance of the ACM application

Set ACMApp = CreateObject("ACM Application")

' Use "ACM Application" for Aspen Custom Modeler

' Use "ADS Application" for Aspen Adsorption

' Make the ACM application visible

ACMApp.Visible = True

' Open the specified simulation document

Set ACMDocument = ACMApp.OpenDocument("C:\Users\user\Desktop\H2_Purification.acmf")

' Set the simulation object to the current simulation in the application

Set ACMSimulation = ACMApp.Simulation

' Set the simulation to run in dynamic mode

ACMSimulation.RunMode = "Dynamic"

' Run the simulation

ACMSimulation.Run (True)

' Check if the simulation was successful and display a message box

If ACMSimulation.Successful Then

MsgBox "Simulation Complete"

Else

MsgBox "Simulation Failed"

End If

' Quit the ACM application

ACMApp.Quit

End Sub

hashtag #aspenAdsorption #Adsorption #AspentechAspenTechnology #MATLAB Coding #optimization #aspen #chemicalengineering Chemical Engineering

How to plot like attached figure in matlab?..

What is it's difference between lsoda method in R vs. ODE23 or 45 solver in MATLAB.(especially in wastewater treatment and biochemical processes)

I am currently engaged in the development of a sophisticated biochemical model for wastewater treatment, which encompasses approximately 20 equations and reactions. As part of this endeavor, I intend to implement the model's code using a programming language equipped with capabilities for solving ordinary differential equations (ODEs). Could you please advise on the most suitable programming environment for this purpose?

kindly respond

can any one provide shooting method in matlab for 9th order differential equations with 9 boundry condition(Velocity, Temperature and concentration)

Recently, I discovered the dimension of the SOM network do turn out to be the number of data clusters for data clustering or image segments when used for image segmentation.

For example, if the dimension of the SOM is 7 x 7, then the number of clusters(segments) would be 49, if the dimension of 2 x 1, then the number of clusters(segments) would be 2.

1. Therefore, are there techniques for determining the dimension?

2. What should be the basis/yard stick for picking the dimension?

3. If the knowledge of the data is the basis/yard stick for picking the dimension, is that not a version of K-means??

a missile is a complex body which contains simple objects such as cone, frustum ,cylinder

What are different ways of modelling and simulation of cascade refrigeration cycleusing natural refrigerants on MATLAB without using simscape ?

How to write program for it and connect MATLAB with REFPROP/COOLPROP ?