Hierarchical Distance Sampling; what is the best way to deal with multiple, non-clustered individuals detected at the same site in same time period?

This question references the Kery and Royle textbook, "Applied Hierarchical Modeling in Ecology", Volume 1. I am trying to apply open HDS models to a 20 year point transect distance data set...

08 September 2019 2,290 2 View

Are there any example data sets and R code for Distance sampling (preferably point counts) with many covariates?

Are there any example data sets and R code for Distance sampling with many covariates? The only examples and tutorials I have seen deal with 1 covariate. I'm looking to set up a distance analysis...

05 June 2019 5,054 4 View

When conducting distance analysis in R -- for those transects that resulted in no observations, do I include values for covariates in the flatfile?

31 December 2018 7,659 3 View

Where to publish a stats note?

I have never submitted a manuscript to a statistics journal before and am curious which journals might be most appropriate for a stats note. Subject matter is a simulation in R. The manuscript...

31 December 2017 7,092 2 View

When reviewing a manuscript, is it unethical to suggest to an author to consider reading an article that you have written?

I have begun to review a manuscript as a part of the peer-review process for a journal. It is clear that the authors began writing a few years ago because of the relatively old citations and...

01 January 1970 720 10 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 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

Would fecal samples stored at -20C for over a year impact metagenomic analysis?

Dear All, I have access to some rodent fecal samples that have been stored at -20C instead of -80C. Anyone have experience with the impact of stowage condition on comparative metagenomic analysis...

01 March 2021 2,512 1 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

How to compare 2 samples recruited with different sampling methods?

If I want to compare characteristics of 2 groups of patients, one group is recruited from a random sample of the general public while another group is from a sample with a fixed gender (male to...

26 February 2021 3,526 3 View

Can random sampling have inclusion criteria?

As random sampling means that everyone in the population have an equal chance to be chosen, can it have inclusion criteria? My research participants have been chosen based on the inclusion...

26 February 2021 6,905 10 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

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

Are there packages (R or Python) for simple models (bucket?) to assess soil water content?

Hi everyone. I am researching droguht effects on soil water drought. I am looking for already implemented functions in R or Python to estimate soil water content from precipitation,...

21 February 2021 2,084 1 View

ANCOVA controlling baseline in RCT - how to perform power analysis and sample size estimation?

Hi, I have a simple question. I am hoping to perform a power analysis/sample size estimation for an RCT. We will be controlling for baseline symptoms, and using post-treatment or change scores as...

19 February 2021 2,648 23 View