What clear proof does show we have to choose eigen vector(s) associated with highest eigen value(s) for PCA dimension reduction?

What clear proof does show we have to choose eigen vector(s) associated with highest eigen value(s) for PCA dimension reduction?

06 June 2020 4,040 2 View

How would one read the files with extension .bnt, .lm2, .lm3 of Bosphorus 3D facedatasets in matlab?

How would one read the files with extension .bnt, .lm2, .lm3 of Bosphorus 3D facedatasets in matlab?

20 March 2020 5,870 2 View

Will a Minolta Vivid 910 3D Scanner and a Minolta Vivid 900 3D range scanner create the same form of 3D face data?

Will a Minolta Vivid 910 3D Scanner and a Minolta Vivid 900 3D range scanner create the same 3D face data? If not so, what would be the different between the nature of data they produce? Can the...

19 March 2020 2,912 4 View

Which algorithms makes use of least squares in object Recognition? Is least squares use in calculating PCA and SVD in machine learning?

Which algorithms makes use of least squares in object Recognition? Is the least squares approximation use in calculating Principal Component Analysis (PCA) and Singular Value Decomposition (SVD)...

15 March 2020 3,590 2 View

Where to get a free standard 3D face dataset?

Where to get a free standard 3D face dataset that is available for download for research purpose?

03 March 2020 5,425 3 View

Is it possible to have a matrix that have pivot columns in every row, in rref and are linearly dependent?

Is it possible to have a matrix that have pivot columns in every row, in Reduced Row-Echelon Form and is linearly dependent?

02 February 2020 5,499 2 View

Any detail proof of how a matrix inverse is derived and why a matrix multiplied by its inverse yields an identity matrix?

Any detail proof of how a matrix inverse is derived and why a matrix multiplied by its inverse yields an identity matrix? If reduce row echelon form is perform on a matrix A alongside its...

01 December 2019 3,830 4 View

Precipitate after adding laemmli buffer to protein solution containing Potassium Acetate?

Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...

01 March 2021 2,622 3 View

How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

How to formulate Energy minimization in Molecular dynamics simulation for alloys using meam potential?

during MD simulation, the atoms are not moving as per required. The problem (as per my observation) lies in energy minimization technique. upon application of tensile strain in x or y direction,...

22 February 2021 380 5 View

How to calculate the fraction metabolized of a drug by an enzyme using clearance(ml/min) values of the metabolite formed?

I am trying to find the fraction metabolized of a drug by CYP and UGT enzymes. I am unable to get the values of fraction metabolized (Fm) directly from the literature. Can we calculate the Fm of a...

21 February 2021 5,379 2 View

Formulate model for one integer optimization?

I am working on one optimization problem. the model with two states, the transition between the two states based on one threshold value (L = 5, which L< 5 -> Normal state, L== 5 ->...

11 February 2021 4,045 3 View

How can I calculate volume fraction of MWCNT from a nano hybrid composite ?

I am adding 0.1wt percent MWCNT to glass fiber epoxy composite and want to determine the volume fraction of the MWCNT from this composite but I don't know how to calculate it. can anyone help me...

09 February 2021 8,883 3 View

Fractional derivative users, are you on the same page with me on the validity of the fractional order parameter, say alpha?

Taking a fractional ODE problem as an example. It has come to my attention that if the fractional order parameter is in the interval (0,1], many only presents results for alpha=0.9, 0.99. I saw...

08 February 2021 9,671 3 View

Anyone knows about how to stop pH getting acidic after 7 days formulating the formulation?

i am trying to formulating one formulation but the problem i am facing is after formulating and adjusting it's pH, when i try to check pH after 7 days it is getting down towards the acidic side....

02 February 2021 9,343 3 View

Is there any protein soluble in oil?

Hello, I am looking if proteins or protein fractions soluble in oil exist? For food application Thank you for your help

01 February 2021 2,103 3 View

What could be possible reason of higher Drug Concentration of Liposomal formulation stability samples over time?

Hello Everyone! I have prepared liposomal formulation using Rotary Evaporator method followed by dialyzed the liposomal Suspension in Phosphate buffer to remove the un-encapsulated drug. After...

25 January 2021 7,752 4 View