Recent content by sandon

Hi, I working on code that does image tracking with missing pixels, but I noticed that higher ordered spline interpolation is unstable. Found through trial and error that the best result is degree 3, picture related. I always thought that spline interpolation does not display behaviours shown...

Thanks for your help.

I am asking about all materials' impedance relationship to elastic waves. The purpose is for Hopkinson Bar Design.

Acoustic impedance of material is defined by density multiply by the velocity of waves within the base material. My question is if i have a tubular or hollow part with a base material, does this count as a reduction of density compared to the base material of the tube or hollow part. Would the...

Are there any other measurable danger other than the following Short term (short half life) I -131 Do not react with air Forms aqueous solution with water Long term (long half life) Cs -137 Forms cesium oxide with air, can be carried away by air Forms aqueous solution with...

let say there is an bundle of fuel with 4 rings. Where ring 1 is center most ring and ring 4 is outer most ring. 1st ring contains: 1 fuel element 2nd ring contains : 6 fuel elements 3rd ring contains: 12 fuel element 4th ring contains : 18 fuel elements The general distribution of...

Dont need an answer i got it

The most probable velocity of thermal neutrons can than be approximated by the Boltzmann constant and is given by the following: v = sqrt (2kT/m) where k is the Boltzmann constant T is the temperature m is the mass of the neutrons My question is why is the above equation not the...

I was reading about different flux shapes, and it depicted the the shape of the fission neutron spectrum to be in the shape of y=e^-x*sinh(sqrt(x)), where y is the spectrum and x is the energy in MeV. note: put that equation into wolfram for easy visualization Then it depicted the slowing down...

Let say we have NxM pixels and we need to cut it down to 2/3*(NxM) The correct method to achieve this is to convolute the original image with sinc(k)sinc(l), then used the nearest neighbor technique to on the convoluted image. Where k and l is matched to the frequency content of the lower...

8) All neutrons created by thermal group, thus vƩf2 exists vƩf1 does not

sorry 7) All fission neutron are born in fast group

Assumptions 1) a=absorption 2) f=fission 3) ∅=neutron flux 4) time independent 5) group 1, fast neutrons 6) group 2, thermal neutrons 7) All fission neutron are boring in fast group 8) All neutrons created by thermal group, thus vƩf2 exists vƩf2 does not 9) Down scattering occurs but up...

This is aimed towards SteamKing, K1 is found with dy/dt=0, but how is K2 solved when f(0.05,1) is undefined by the question and there is no obvious way to determine the f(0.05,1). Thanks