Why there is a differential rotation in the Sun and what are the reasons behind it?

I know that the Sun, unlike the Earth, is not a rigid body. It's composed of a hot rotating plasma. And the equator sector has to cross the greatest distance to stay a part of the sphere, like...

08 September 2018 2,438 0 View

How to combine 2 FITS images into a single FITS file?

Hello everyone, I would like to combine two FITS files into a single one. They represent data from CALLISTO spectrometer. I would appreciate if there is a code in Matlab, Python, or IDL to do...

03 April 2018 7,648 2 View

How to add a decimal number to date-time in Excel ?

I was looking for a method to add a decimal number that represents the hours like this for example 30.12 hours (hh:mm) to a date-time cell like this for example 6/12 17:45 (M/dd hh:mm) and get an...

02 March 2018 6,349 0 View

Why does the duration of solar flares tend to be much shorter than the duration of type-II solar radio bursts?

Why does the emission wavelength directly proportional to its duration?

31 December 2017 1,939 6 View

How to find trends in data?

If I have a data like the attached image. I need to draw a vertical line (like the red dashed line) at the max point of the green part (positive trend) which is followed by a strong negative...

10 November 2017 2,250 2 View

What's meant by "fold" in the electron density models?

04 May 2017 9,892 0 View

How to plot a fitting line on type-II radio burst data?

In the attached images, the "Data.jpg" image is a spectrogram for a type-II radio burst with frequency on the y-axis and time on the x-axis and the intensity of the signal is labeled with colors....

04 May 2017 246 2 View

How to include the Solar Wind indices in the Neural Network?

01 February 2017 8,761 2 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

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 View

Why should we choose deep learning to machine learning? Why is CNN better for image classification? Can I get Typical Answer?

What Characteristics makes CNN work better?

03 March 2021 1,458 4 View

What are some of the research gaps in machine learning and artificial intelligence in africa?

i would to know some of the research gaps in the artificial intelligence field in most african countries.

03 March 2021 6,145 3 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View