What is the better software for approximation of 3D surface with equations?

I have a massive of x, y, z coordinates of 2D surface in 3D space, which builded in Ansys HFSS or AutoCAD. How can I get the analitical aproximation of this surface by formulas?

21 February 2021 3,444 7 View

Can anyone help find a good program on the PC (or site) to monitor astronomical situation in the solar system and the galaxy?

Good day!Tell me please PC software, allowing you to monitor the situation in astronomical solar system, galaxy.I have the phone programme Planetarium. Unfortunately I cannot find it for...

06 January 2016 5,439 8 View

Where can I read about typing atmospheric circulation in Europe?

Hello everyone.Tell me please fundamental works by typing of the atmospheric circulation in the European region. Dolia Vadym.

28 December 2015 5,340 7 View

How can be use the Modular design for Artificial Intelligence systems?

The one important principle to building difficult System of Systems is Modularity. I think that a modular approach and philosophy should be use to building of AI Systems as well. It can be a...

01 January 1970 5,074 6 View

The Physics of a True Noon Change?

Good morning to all. Happy New Year! Who can tell the physical process of changing the True Noon during the year? Sincerely, Vadym.

01 January 1970 7,139 1 View

AI as expert for Analytic hierarchy process

To continue the discussion started on https://www.researchgate.net/post/Co-authorship_are_machines_coming I suggest using Artificial Intelligence as an expert for Analytic hierarchy process. What...

01 January 1970 3,536 61 View

It is possible that Neural Network can give a better estimation of signal parameters than Cramer-Rao Lower Bound?

Some authors of publications wrote that Neural Networks can give a better estimation of signal parameters than Cramer-Rao Lower Bound. What is your opinion regarding these?

01 January 1970 1,467 3 View

Negative refractive index in rainbows and gravitational lenses

Why we don't see a negative refractive index in rainbows and gravitational lenses? I think that this effect can be, because nano- and microparticles of water and dast are similar to dielectric...

01 January 1970 6,832 11 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

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 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

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

How can I measure MMP-1 protein activity or protein level from liver tissue?

Instead of checking only the mRNA level, I want to check the active protein level of MMP-1 in Liver tissue from mice. How can I do that?

03 March 2021 1,763 2 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View