Is there any opensource software for measurement of areal texture parameters on output files of optical profilometers?

I have scanned some of my experimental surfaces using Zeta and Alicona optical profilometers. Is there any opensource software to perform measurement of areal texture parameters on the output...

11 December 2019 3,090 6 View

What are the probable reasons for sparks not occurring in electro chemical discharge machining setup(ECDM)?

I was trying to develop an ECDM setup with following specifications: Cathode: Copper of 1mm diameter Anode: Graphite plate 16x16x5 mm3 Workpiece: Glass (quartz) Cathode to anode separation: 30...

03 April 2016 9,539 7 View

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01 February 2016 2,413 3 View

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01 February 2016 2,252 6 View

Is there any liquid in which machined copper could be submerged to prevent oxidation?

I'm facing copper rods to be used as electrodes in electrical discharge machining. I want to prevent any oxide layer formation on the copper electrode surface between time of facing the electrodes...

01 February 2015 3,023 7 View

Which is the best magnification at which 3D roughness values can be taken in Alicona Infinite microscope or Zeta 3D microscope?

I had taken the 3D roughness value of precision milled Ti6Al4V workpiece surface in Alicona microscope. The parameter I considered is Sa (Average height of selected area) in microns. In Alicona...

01 February 2015 1,865 3 View

Does galvanized or chromium-coated steel plate rust in deionized water? What sort of a coating can prolong rusting of the steel plate?

A steel plate needs to be immersed in de-ionized water in a tank for prolonged periods. Would like to know what sort of coating on steel could prolong rusting of the surface.

31 December 2014 9,429 6 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

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 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

What test should I use to compare two or three means, if data is not normally distributed but sample size is > 30 in each group?

I personally feel this as a most confusing question. As per my understanding, if sample size is > 30, and sample is skewed, we can still use paramteric approach, as it will follow Z...

01 March 2021 1,587 6 View

Distribution of particles in metal matrix?

How would define the "good" and "poor" distribution of particles within the matrix. Is there a quantitative solution to assess the distribution of the particles, which then having denotation of...

28 February 2021 7,397 8 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

VIF very high, but correlation is low and coefficient is significant. Which one whould I choose?

Hello. I have a question whether if my coefficients (statistically significant) would be valid when VIFs are really high. In my model, there are independent variables(IV), moderating variables...

26 February 2021 956 13 View

How to plot the probability paper of Gumbel distribution using R programing?

In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...

25 February 2021 5,229 3 View

Data Analysis K-S and S-W tests?

Hello, I have conducted analysis where the K-W and S-W have come out as p

25 February 2021 9,648 3 View

Statistics: include groups of respondents made by one person for analysis?

Good morning, I could not find literature about this so I am asking. I am organizing data for a questionnaire (N=100) that foresees some personal questions like level of education. For the aim...

25 February 2021 2,090 4 View