How can I perform Phylogenetic Principle Component Analysis (pPCA) on my data?

How can I perform Phylogenetic Principle Component Analysis (pPCA) on my data, using phylogenetic trees with branch lengths, using R? I have 22 species with their phylogenetic tree and 14 traits...

07 August 2018 7,224 3 View

How can I measure the residual of the trait values?

I want to compare evolution rate between two set of data (morphological and reproductive traits) because the values of the reproductive traits is very small in compare with morphological traits...

04 May 2017 2,016 2 View

Has anyone got GARLI software, for phylogenetic analysis?

06 July 2016 9,867 0 View

Hi everyone, I need to use PGLS, for studying evolution of Platycheirus spp.?

02 March 2016 8,544 2 View

How can I study the evolutionary relationships among a 22 species of insects of the same genus?

hello everyone ! I got a question about trait evolution analysis.I have COI (Cytochrome oxidase I) DNA sequences for all species, and I have excel sheet for all morphological characters for all...

02 March 2016 928 10 View

I need to use R software (ape package) for studying biological evolution of Platycheirus sp. ?

I have the DNA sequence of 20 species, and the data for all characters of these species like (thorax volume, proboscis length, wings and legs length, abdomen length, ........ect), my question is...

01 February 2016 5,708 3 View

How evolution of species behavior are studied through phylogeny of certain species of insects?

I need to study the evolution of insects behavior through phylogeny?

31 December 2015 9,345 0 View

I every one, I have some sequences in notepad format, I need to build tree from it, anybody know how can I change it to Fasta format?

hi every one

31 December 2015 5,662 0 View

What is the best way for estimating evolution rate between morphological and reproductive characters?

01 January 1970 5,943 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

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

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 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

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View

What is involved in morphological changes of SEM images of a substance?

In the sem analysis of CaCO3 nanaoparticles, the morphology images showed spherical shaped particles but the proposed morphology for these type of nanoparticles is trigonal. I prepared the...

01 March 2021 1,960 4 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View