Is there a MATLAB code for Zernike coefficients calculation from xy wavefront error data ?

I have the wavefront aberration error (or OPD) data in xy plane. Know I want use MATLAB to extract the Zernike coefficients from the data set. it would be great if any one could help me to do it....

22 January 2021 4,456 3 View

What are the specifications of placing an antenna on an EBG structure in CST or HFSS?

Hello Happy New Year , I wish the best for all of us and our kind planet Earth in 2021 OK, I designed an microstrip patch antenna on CST and now i want to use EBG structure to enhance its...

31 December 2020 5,387 9 View

Hello to every one. I have a color image and want to remove the lines and numbers from it with MATLAB. but how ?

I want a smooth image without these lines and numbers but i don't know how

27 December 2020 1,753 10 View

How can we determine equivalent circuit model of an antenna using CST and ADS?

hello everyone i hope you all be safe and sound during quarantine! OK i designed an antenna (MPA) in CST. now i want to determine its equivalent circuit model by ADS. is it possible? and how...

21 November 2020 688 11 View

Is there any specific boundary or excitation for an antenna with EBG structure in CST or HFSS?

hello everyone i designed an antenna and also a EBG structure to improve its behavior in both CST and HFSS but i'm not sure what kind of boundary i should use to get reasonable results. i try many...

03 September 2020 3,079 8 View

Is it good to have negative gain for our antenna??????

hi everyone. I've been reading a research letter about wearable antennas for biomedical application. and then in the abstract it said, the exact words are,"The structure achieves very good...

21 July 2020 9,175 23 View

How write matlab code for multipath rayleigh fading channel?

in my case we assume independent multi path rayleigh fading channels, and the power gains of multiple paths are exponentially distributed. the numbers of channel paths is 4 and the TX-RX...

10 February 2019 4,673 2 View

Risk of bias?

Hello all We are assessing risk of bias with Cochrane tool for an intervention review. Can we say that the role of pharmaceutical companies as funders may impose "other bias"? Regards

25 October 2018 5,165 1 View

What will be the programming language of future Computational Codes? Good old FORTRAN evolves or will be removed from heavy duty computational world?

I know there are great reliable libraries on Fortran for Computational PDE/ODE, Computational Statistics and Numerical Linear Algebra. Also almost all the legacy software packages of Civil...

30 August 2018 5,424 4 View

An easy-to-culture and manipulate male Drosophila cell line?

16 September 2016 1,452 3 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

Can we distinguish the type of free fluid inside the pelvic and abdominal cavities whether blood or serous fluid using the ultrasound?

during ultrasound examination of acute abdomen, sometimes we see free fluid , can we know the type of fluid ,whether blood or not , using ultrasound only? if yes , what are the sonographic...

01 March 2021 7,476 4 View

What is the difference between genotype and haplotype data in the ped format?

Hi everybody In the ped format for genotype, alleles of any SNP are represented by two columns (one for each allele, separated by a space). Is a column sufficient for the haplotype to...

27 February 2021 1,965 1 View

How to calculate Ligand-active site distance in a ligand-protein complex from MD simulation?

I have run a MD simulation of a ligand-protein complex in GROMACS using CHARMM forcefield. Reviewer has asked me to calculate Ligand-activesite distance and binding free energy of ligand with...

27 February 2021 4,703 1 View