What is the most efficient way for computing Archetypal Analysis?

Archetypal Analysis (AA) is a method for analyzing data by looking at its convex hull and not by looking "inside" it, as is the practice in most of other procedures. For example in Cluster...

05 June 2019 5,819 3 View

Have we silently entered on a modern gray Inquisition in Science?

05 June 2016 2,632 19 View

Lets talk about Cosmology. Are the basic foundations valid?

03 April 2016 7,819 22 View

Which is the best wound dressing for a pressure ulcer of type III or IV?

01 February 2015 8,956 22 View

What is going on with arXiv.org? Is it a shadow journal with jungle rule to govern it?

Has arxiv.org fallen into an arrogant state, due to its over-success? From certain examples it seems that: (i)It is a non-declared Journal without known editor in chief, without known referees...

10 November 2014 4,661 30 View

How do you use Fortran .dll and .so executables from an R package?

I have an R package and I want to update it by giving the option to run a pre-compiled .dll made from a Fortran source, since by this way it is very fast. The problem is that I'd like to have...

09 October 2014 7,311 10 View

What if gravitational waves will never be found?

09 October 2014 1,228 23 View

Is the concept of field the proper way to describe physical processes?

What is a field? Everywhere around a 'source' of the field, if we put a 'test particle', then a 'force' will be applied to it, coming from the source.This definition has a critical drawback: if...

09 October 2014 7,840 100 View

Should we move towards a totally new cosmological paradigm?

Many paradoxes have been created the last 100 years after the complete dominance of relativity theories in cosmology. We could talk about the End of Physics, in a similar manner as F. Fukuyama...

07 August 2014 8,170 6 View

Nature should in principle be more complex than a creation (Mathematics) of one of its subsets (Humanity)?

It is a Postulate or Axiom or Dogma for cosmological thoughts. What is your opinion about?

07 August 2014 4,192 39 View

How to normalise data on OPM package from R Studio ?

Good afternoon, I recently used OmniLog from BIOLOG for my experimentations : I tested the metabolism of different strains on 2 types of plates. I have 16 strains of 3 different groups...

02 March 2021 3,584 1 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Which is suitable for use with Python? MySQL or SQL Server?

Which is suitable for use with Python? MySQL or SQL Server? What is your suggestion?

01 March 2021 3,422 3 View

Where can I find atmospheric measurement profiles (temperature, density, etc.) between 300-800 km altitude?

I am investigating thermospheric mass density profiles between 300-800 km altitude. I would like to compare the variability with other parameters, including temperature, electron content,...

01 March 2021 5,902 3 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

What software programs can directly simulate Additive Manufacturing Directed Energy Deposition (DED)?

I understand there are a lot of software programs that can simulate DED by going through specific modeling, simulation, and commands. For me, that was time consuming and results were not accurate....

24 February 2021 4,428 3 View

I am looking for a simple software program to model 3D chemical bonds. The purpose is to generate high-quality graphical abstracts. Any suggestion?

Hello everyone: I am looking for a simple software program to model chemical bonds. The purpose is to generate a high-quality graphical abstract for a top leading journal in the field of...

23 February 2021 8,012 3 View

Bayesian decision trees and bayesian regression trees in Python and/or R?

I am looking for implementation of bayesian decision trees and bayesian regression trees in Python and/or R.. Do you know if the existing libraries support this

23 February 2021 6,689 3 View