Which statistical test to use for comparing percentages between multiple groups?

Hello everyone! I am looking for some statistical help! I am working in in vitro micropropagation and one of the aspects that I am studying is the rooting of plants in 10 different growing media....

14 January 2021 7,575 5 View

QUANTUM INFORMATION: Why a Toffoli gate can be used to obtain any permutation gate?

Hi, i am sudying some quantum computer science and I am really struggling to find an explanation to the question done above. Any kind of help would be wonderfull. Greets.

09 November 2020 4,657 3 View

Do you know Psychometric Test or questionnaires specifically designed to evaluate tennis players?

28 September 2020 6,850 7 View

How to obtain Uranium metal from Uranyl Nitrate?

I got some Uranyl Nitrate crystals and want to get Uranium metal, to start, think I can use heating to decompose the nitrate salt in order to get the oxide, and then I should reduce the oxide to...

22 August 2020 525 3 View

How to use Mixed Model ANOVA for non-normal data?

My design is that of repeated measures (within-subject design). That is, the subjects (name) are the same through the groups (group). This implies that there is dependency between the data, which...

18 July 2020 2,731 12 View

Is it possible to obtain a product similar to composting from organic waste in 24 hours?

We are working on the mathematical modeling of the decomposition of organic residues for the realization of a reactor of a product similar to composting in approximately 24 to 48 hours, although...

16 July 2020 2,697 16 View

Is it possible to compost in 24 hours?

We are working on the mathematical modeling of composting for the realization of a composting reactor in approximately 24 to 48 hours, although first I would like to know if it is feasible and if...

14 July 2020 1,838 7 View

Is there a mathematical model that describes the composting process?

These models can be of the different stages of composting, either from the thermophilic or mesophilic stage. Thanks

22 June 2020 3,462 6 View

How do I know if my GLM using selection of models by Akaike Information Criterion is ok?

I'm trying to see the isolated and combined effects of precipitation and three different human disturbances indexes are having an effect on the growth of a cactus. I have a gradient of eight...

16 May 2020 5,868 5 View

How to create a solid with different materials in Abaqus?

Hi I have to create a solid plate in Abaqus but this has to have different materials. How can I do that?. it is like a rectangle, made up of smaller ones, which will be made of two different materials

02 May 2020 2,228 6 View

Where to find data on trees in tropical agroforestry?

Hi, I'm looking for data (mainly related to management: growth rate, canopy size, soil and climate preferences, etc.) about tropical trees used in tropical agroforestry. Have you ever heard about...

28 February 2021 7,356 8 View

Your thoughts on the spherical densiometer to estimate relative species canopy cover?

Hi biologists and biogeomorphologists, I want to characterize vegetation plots on a transect that follows a successionnal gradient from a river bed to a mature forest. Ecologically, I am...

26 February 2021 5,720 2 View

Stress/strain tensors decomposition ???

25 February 2021 6,760 1 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

How to assure whether a regression tree overfit or not by seeing bias-variance value of the model?

Lets consider a regression tree in which variance is 1.1065*e-10 and bias is 2.962e-13. Also the model RMSE on training set is 1.5e-5 and on training set is 1.2950e-5. Is the model is overfit or...

22 February 2021 7,755 2 View

Are cloud points able to identify tree species?

Hello Dears My goal is to classify dense forest tree species using drone images. Is it possible to classify dense cloud points? If yes, in what way and in what software? Thankful

15 February 2021 3,475 3 View

What could be exact way to remove invasive Prosopis juliflora from arid and semi-arid tropics of world where species is considered disaster ?

Prosopis juliflora is considered a noxious weed but its eradication is very costly inhivitive if no impossible ! We have very strong openion that it's spread could be chacked only if it's pods are...

25 January 2021 4,433 7 View

Is aligning mitochondrial and nuclear sequences inconsequential?

Probably a silly question but I am a complete novice in molecular biology. I have decided to attempt a phylogenetic analysis. I have managed to create a phylogenetic tree but want to confirm...

19 January 2021 5,895 2 View

How can I make unsupervised clustering of trees species using algorithms like HAC, Kmeans... in R?

I am working on the development of multi-species volume allometric equation from diameter (DBH). I would like to form groups of species with the largest possible volume-diameter correlations by...

19 January 2021 5,752 5 View

Can anyone please tell me, what will be the Crop Coefficient value for shortleaf pine and oak tree in HEC-HMS model simulation?

my study area located in the forest region having Shortleaf Pine and Oaktree, thus in the Canopy Method I am trying to get the Crop Coefficient value of these trees but did not get anything.

18 January 2021 9,789 1 View