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

Buffer Exchange using column packed with sephadex G-25 effect on protein concentration?

Hello, If i am doing a buffer exchange for an antibody of 1mg/mL, does the elution lose protein in the process of buffer exchange? For example, if i flow through 500 uL of 1mg/mL sample, and...

03 March 2021 6,299 3 View

No title

03 March 2021 5,360 2 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 View

How to increase mesh quality of a cfd model in ansys fluent?

How can one improve mesh skewness, orthogonality, aspect ratio?

28 February 2021 7,730 3 View

How to find a correlation between coordinates in a curvilinear coordinate system?

Hello. I have a skewed elliptical coordinate system (I use alternative elliptical coordinates). And I need to determine connections between coordinates in order to fetch a covariance matrix of...

28 February 2021 364 3 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View

Mixed ANOVA - help?

I'm currently working on a piece which asks to conduct an ANOVA - looking at the effect of sporting group (2 levels), and exercise trials (two trials with six levels). I've computed this all...

27 February 2021 9,626 4 View

How can we raise the figure when we writing a paper with Latex ?

Hi, everyone. I'm a starter to write a paper by Latex. But I have some difficulty using it. I'm writing the paper with 2 columns. And, there is one figure that occupies the 2 both-sides. I want to...

26 February 2021 3,738 3 View