Science topic

# MATLAB - Science topic

MATLAB (matrix laboratory) is a numerical computing environment and fourth-generation programming language. Developed by MathWorks, MATLAB allows matrix manipulations, plotting of functions and data, implementation of algorithms, creation of user interfaces, and interfacing with programs written in other languages, including C, C++, Java, and Fortran.

Questions related to MATLAB

I'm trying to start modeling asphaltene precipitation. Since I read studies related to asphaltene precipitation, I have found that modeling with PC-SAFT equation of state is most appropriate.

However, I don't have any software or MATLAB code that can model VLE and LLE for the system with multicomponents.

Would you please recommend me some free software or code for PC-SAFT EOS?

Dear colleagues,

Unfortunately, I don't have MATLAB and I don't know anything about it. Could someone please help me?

Given is the vector x0 = (1, 2, 3);

What does the following code return?

scalefactor = min(max(max(abs(x0)),1),10);

D0=eye(dim);

D0(dim+1,:)=(1-sqrt(dim+1))/dim*ones(1,dim);

For i=1:dim+1

X(i,:)=x0+ scalefactor*D0(i,:);

end;

What values do the matrices X and D0 have after calculation?

Many thanks in advance!

Kind regards,

Andreas

Dear all,

Could some one suggest a free package to plot pole figures arising from the distribution of grain orientations? This might able to read in a set of these orientations specified in a formatted text file. Excuse me if your suggestions are neper, matlab based.

Thanks and regards,

Arun

We are trying to apply spectral quasi linearization technique to solve fluid flow stretching sheet problem in matlab. We can solve the momentum equation alone in this method. We are in need of help in matlab code for simultaneous equations. Thanks in advance

#MATLAB

#EOS

#binary intraction

#peng_robinson

Can any one help me for a matlab code for lyapunov exponent of a dynamic system 3D?

This discussion is to record the maintenance, development, and update of the MATLAB module to detect and analyse marine heatwaves - m_mhw.

If you have any suggestions, requests, or questions regarding this toolbox, please feel free to comment or email zijiezhaomj@gmail.com

I need how to model and develop mix proportion of HVFAC concrete and regressional analysis also.

I have exposed the Gaff Chromic film and then scanned it, now in MATLAB, I have to write a code to convert it to dose and then obtain the calibration curve of the film.

Is there any package or code that can give a high accuracy for a solution to Non-linear equations or Eigen-problems, with let us say 500 digits?

I tried the "so called" (vpa function) which is a variable-precision floating-point arithmetic, but it deals with input symbolically, and in somehow goes incorrectly.

Any suggestions are appreciated.

I have deep neural network where I want to include a layer which should have one input and two outputs. For example, I want to construct an

*intermediate layer*where Layer-1 is connected to the input of this intermediate layer and one output of the intermediate layer is connected to Layer-2 and another output is connected to Layer-3. Moreover, the intermediate layer just passes the data as it is through it without doing any mathematical operation on the input data. I have seen*in MATLAB, but it has only 1 output and this function is read-only for the number of outputs.***additionLayer**I am currently working on running variance ratio tests in Python. Are you aware of any packages that are equivalent to Matlab's vratiotest (https://www.mathworks.com/help/econ/vratiotest.html) or R's vrtest (https://cran.r-project.org/web/packages/vrtest/index.html)?

I found several discussions on stackoverflow, however, none of these were helpful. The only package I am aware of is the arch package (https://github.com/bashtage/arch/blob/main/examples/unitroot_examples.ipynb). Any further ideas?

I am currently using Matlab ode solvers to do time integration of a 16-dof system. But, it takes a very like time to do so. What are the best and most efficient alternative?

Hello Everyone,

We have LTE tool box option in MATLAB and we can generate the LTE signal for visualization. Is this possible to have an LTE signal in .C or .HDL form? What are the possibilities to get LTE signal in these form, because to develop a hardware and if LTE used as a reference signal then what are the solutions?

Thanks in advance and I welcome to all researchers, Faculties and Industrialist for your participation.

Best Wishes,

Dr. Akhilesh Verma

I have acquired GPS raw data from the Ublox Neo-6m module. Upon logging the raw data, it came to me as NMEA data. I want to postprocess those data in Matlab. Usually, Rinex observation data is processed, but how do I post-process NMEA data on Matlab without a Rinex file, or is there any procedure to convert those NMEA data to Rinex?

Hi all

Can you please suggest me How to calculate participation factors based on the eigenvalues real and complex.

1. Eigenvalues

1.0e+03 *

-0.034236848980183 + 6.751951884207693i

-0.034236848980183 - 6.751951884207693i

-0.034236848980183 + 6.123633353489733i

-0.034236848980183 - 6.123633353489733i

-0.055866396510321 + 0.314159265358979i

-0.055866396510321 - 0.314159265358979i

How to find the participation factors using matlab script ?

Can you please suggest me or any references.

In case there is a ready-made Matlab roll, I will be thankful

I need the code of matlab of SEIR model in paper"Stability analysis and numerical simulation of SEIR model for pandemic COVID-19 spread in Indonesia Suwardi Annas a , Muh. Isbar Pratama b , Muh. Rifandi b , Wahidah Sanusi b , Syafruddin Side b,∗"?

Detailed suggestions are needed with tutorial link etc.

In topological optimization of binary matrices, where 1 corresponds to a density of 1 and 0 corresponds to a density of 0, how can you ensure that the number of connected components for 0 is 1 in MATLAB?

Good morning,

Regarding Park transformation I note Matlab specifies by default q-axis aligned with a-axis and hence sinus-based transformation. I have the problem that many research I have reviewed is based on cosinus-based.

Would you kindly advice which of them is preferable in your opinion.

How could I "translate" the expression from one ref frame to another in order to make my calculations consistent?

Thanks in advance and Happy NY2K20!

Juan Cabeza

I have 14 accelerograms which should be matched to an arbitrary displacement spectrum. which software or which MATLAB code is better to use ?

I want to use these methods in SPSS or MATLAB software, but I don't know how to do it, can anyone help me?

If you know a video or site, please send it to me.

If you know any other software that can do these methods easily, please tell me.

Hello,

I'm interested in simulating the channels of

**BS-Reconfigurable Intelligent Surfaces(RIS)-UE**using**NS-3**. Does anyone have any insights on this or perhaps some code references that I could use for guidance? Thank you.I am trying to solve the system in the following figure by any numerical method. Can you please suggest me a source to learn this with Mathematica or Matlab?

I want MATLAB code for the Faster-Than-Nyquist Signaling (FTN) over channel rayleigh ?

I'd like to deploy 1 main BS and 6 small BS in one hexagonal cell and 1 UE associated to each BSs. I don't know how to deploy in matlab.

I attempted to comprehend train and test data for classification using Matlab. However, an error prevented me from succeeding. I require assistance immediately. Please assist me and enhance my knowledge.

If anyone could help in finding the needed equations to model the system and have them written as a matlab code too

I have a signal having dimensions 500 rows and 10000 columns. I want to convert it to a unique image and extract features using GLCM in MATLAB. Any help regarding this?

I have four arrays of data. Let's say these data are stored in a .xl file and the data arrays are a,b,c,d. I am trying to curve fit the data and generate a mathematical equation (it could be polynomial equation) such that:

**d= function of (a,b,c)**[where a, b, and c are independent parameters]

However, MATLAB only allows curve fitting for two independent variable which is a barrier for the Process.

Found some comments about Linear regression process in math work discussion thread. But I am not sure how to implement the process.

I am actually looking for a possible MATLAB code sample which can be modified to solve the above mentioned problem. Thanks in advance.

Is there any matlab code available for oscillatory behaviour of neutral differential equations?

Can anybody help me to draw 3-D plots for skin-friction, Nusselt number and Sherwood number to ODE-BVP4C, Boundary Value Fluid Dynamics problems using MATLAB?

Thank you.

I would like to acquire EMG, torque/angle (from isokinetic dynamometer), and stimulation data via Matlab. I have a chassis system that is connected to my computer with Matlab. When the stimulation is given, I would like it to trigger the system such that Matlab records and shows me the next 0.3s of data (i.e., to visualize M-wave).

Does anyone have a Matlab script they could share with me?

In the MATLAB language, when using the FCM algorithm, we find that it deals with some default options, for example, it uses the Euclidean distance, and when we want to use another type of distance, the program refuses to execute. Is it possible to modify these options?

Estou tentando plotar a probabilidade de detecção para 5 usuários secundários numa rede de sensoriamento cooperativo usando a regra de decisão OR. A probabilidade de todos está a ser igual a 1 para todos os usuários, plotando uma função constante para os diferentes valores do limiar (Pd vs Limiar de decisão).

Talvez o meu problema se deve ao entendimento dos parâmetros da função, porém não encontro um material que me ajude nisso e por outra o ganho do canal está me dando um valor muito pequeno levando a uma SNR pequena também.

I am trying to generate the Haar wavelet operational matrix of integration of order one, that is P(1, i). For example, where the maximum level of resolution, J=3. Implies, 2M is equal to 16. Hence, the operational matrix is going to be a 2M square matrix.

How to encode Huffman codes into a gray scale image without using built-in commands?

MATLAB or Python

For Rayleigh channel, we can model it as randn(1,L) + j* randn(1,L).

I am wondering how can we generate a real Nakagami-m channel using MATLAB? It seems that I cannot find a single bit of this on the Internet.

Could anyone help me this out? Thank you!

Hello everyone,

I have a question regarding the use of the ANN tool in Matlab. I'm wondering if there is a specific model or final predictive equation that is generated when utilizing this tool. Any insights would be greatly appreciated. Thank you.

Can Matlab software modelate ship data like: propulsion force, ship resistance, hydrodynamic coefficients?

I need to software to easily verify and compute ship data. Any models for this?

I need to know about the difference between Origin Pro & MATLAB. Can anyone explain..??

I am trying to integrate in Matlab a function f(x) which consists of two functions g(x) and h(x) where g(x) is exact integrable and h(x) is integrable by numerical method .

1. I need help related matlab code to calculate vlasov launcher parameter which I can use in feko.

2. How to make a helical cut in vlasov launcher.

Hopf bifurcation diagram of the system with respect to the fractional order parameter 𝑞 when all other parameters are

𝑟1=5 𝑎11=0.4 𝑎22=0.2 𝑎33=0.3 𝑎12=1 𝑎21=1 𝑎23=1 𝑎32=1 𝑎13=35 𝑎31=0.1 𝛼=0.5 𝑑2=1 𝑑3=1.2

Which software will help to produce a Cristal Clear Graph like Origin Pro?? Except MatLab.

I am new to Matlab and don’t have coding experience and need to process and analyze EMG signal files.

The files are in EDF format, and I have a script for converting it to .txt. Next, I need to filter the data, convert it to RMS, Fast Fourier Transform and get the Mean frequency of spectral power from certain 50ms intervals.

I’ve tried a lot of scripts and none of them seemed to work.

After filtering and converting, it would be great if I could have a way to see the whole file, select the intervals I needed, and see the mean frequency of spectral power of each interval.

I was trying to decompose an EMG signal, which was sampled at 200 Hz, into 7 levels of decomposition using DWT. And the result is shown in the figure( only upto d3 is shown here) However I would like to know , how to see in MATLAB that with each level , the frequency is split into high and low?. How to find the power spectrum of the same(if its possible) ?

I am working on blockchain based energy sharing. I have consensus mechnism implemented in Matlab, now I want to implement a complete system.

**My Question:**Can we implement BC in hyperledger etc and run consensus in matlab?Map reduce framework need to be implemented on hypercube network architecture in MATLAB or Python progeamming

CEC 2017 Special Session and Competition on Single Objective

Bound Constrained Real-Parameter Numerical Optimization, Matlab

I request to share if you have any code or idea on computation of number of domination sets in a given graph using MATLAB OR PYTHON

analyzation of wind flows around wind turbines around wind using Matlab codes and models.