How to calculate edge preservation index between clear and noisy image ??

Edge preservation index measures the ability to maintain details of the image. how can i calculate it for a polarimetric sar image

18 December 2017 9,286 3 View

What is difference between direct bandgap and indirect bandgap ? How can we calculate direct and indirect bandgap from uv-vis data?

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23 March 2017 8,837 3 View

Which solvents can be used it compound is not soluble in IPA and Hexane?

20 April 2016 8,431 1 View

What is the difference between charged pressure and mean pressure for cryocoolers?

I normally read the terms viz. charged pressure and mean pressure while browsing cryocoolers research papers. I do not understand what is the actual difference between them? How do both differ...

18 September 2014 1,465 4 View

Can we use the shooting method for first order equations?

I am currently doing numerical analysis of GM type Pulse Tube Cryocooler. Governing equations are a system of boundary value problems and one need to use shooting method to solve it (as per one...

13 March 2014 1,413 1 View

Why does helium behaves almost as an ideal gas at 50 K and above temperature at moderate pressure?

Why does helium behaves almost as an ideal gas at 50 K and above temperature at moderate pressure? What is the factor that decides 50 K temperature limit for ideal gas behavior?

29 September 2013 8,109 6 View

How to find shear strength of a material (SS 304)?

I want to use shear strength data of SS 304 for one application. How do we know how much strength any material possess in shear? How one can get the shear strength data of any material?

27 September 2013 6,653 5 View

Pressure boundary condition for pulse tube cryocooler?

I would like to know the meaning of d2P/dx2 = 0 which is the pressure boundary condition for oscillating machine i.e. GM Type pulse tube cryocooler. I want to know, how to deal with these pressure...

30 August 2013 2,195 2 View

Why does pressure ratio in GM type pulse tube cryocooler decrease as the temperature decreases?

I am working on GM type pulse tube cryocooler and I have found that pressure ratio decreases along with the temperature reduction. I do not know what is the reason. As the temperatures goes down...

09 August 2013 3,776 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Which SAR dataset to use for generating coherency matrix and performing target decomposition (Description) ?

Working on chandrayaan-2 DFSAR data, there are three datasets available: 1) Slant range image data product: The slant range complex image file. Each pixel is represented by two 4-byte floating...

02 March 2021 8,481 3 View

Please. Could you help be in implementing Fractal Discrete Cosine Transform algorithm in Matlab?

I do need the Matlab code of Fractal Discrete Cosine Transform (FDCT). Can anyone who has already implement this code, help me with the implementation of this transform?

24 February 2021 5,602 2 View

Can anyone please help me in processing SAR SLC data to generate interferogram using SNAP?

I have two scenes of the study area, one top and the other bottom. As per the tutorials and papers published, the step include coregistering the master sand slave images. However, when i try to...

24 February 2021 6,372 1 View

Why CNN algorithm performs well in Network Intrusion Detection based on some recent resources?

Most of the papers have compared different hyperparameters such as layers, initializers, activation function, and optimizer algorithm in the CNN algorithm for detecting network intrusion. This is...

24 February 2021 4,578 4 View

In frequency domain alpha band(8-16hz), beta band(16-32hz), gamma band(32-64hz), sub-band(64-128hz) are same as LL,LH,HL,HH in wavelet decomposition?

I am working on single trial motor imagery data i.e. EEG data. I am following a paper which has a dataset from BCI challenge IV (dataset 2b). After removing noise and extracting all the data from...

23 February 2021 5,503 1 View

Can i quantify protein concentration in sds page?

I have to quantify a mixture of proteins. But I can not quantify its concentration by any protein detection methods as the values fluctuate. Can i quantify the protein concentration by sds page?

22 February 2021 215 2 View

How do I collect online measures in a same-different task?

The same-different task requires to subjects to indicate whether a pair of stimuli seen or heard are the same (say AA or BB) or different (say AB or BA). Researchers often collect offline measures...

20 February 2021 9,226 2 View

MVN, how to conciliate contradictory results from Multivariate normality and Multivariate outliers test?

Dear colleagues, I'm working with Path analyses in lavaan and MVN packages. There are some results that for me are confusing and features from the MVN that I do not know how to set. My dataset is...

18 February 2021 190 3 View

How to calculate the Atomic Polar Tensor using DFT ?

Dear friends, I am a beginner at DFT calculation. I have done a structure optimization using DFT- B3LYP/6-31G*, Nevertheless, I don't know How to calculate the Atomic Polar Tensor (APT) in...

17 February 2021 9,082 3 View