The sustainable livelihoods framework (SLF) is a comprehensive way to study agricultural issues. So far, our best knowledge, no has applied the SLF examine influence of land quality on use intensively. current research examines effects farmers’ decision-making in Vietnam by modifying and using fixed regression model. method controlled household commune-level unobserved invariant characteristics...

MOTIVATION Phybase is an R package for phylogenetic analysis using species trees. It provides functions to read, write, manipulate, simulate, estimate, summarize and plot species trees, which contain not only the topology and branch lengths but also population sizes. AVAILABILITY The Phybase package is available at the R repository. The manual and supporting materials including source code, s...

Stem taper data are usually hierarchical (several measurements per tree, and several trees per plot), making application of a multilevel mixed-effects modelling approach essential. However, correlation between trees in the same plot/stand has often been ignored in previous studies. Fitting and calibration of a variable-exponent stem taper function were conducted using data from 420 trees felled...

The effective population size over time (demographic history) can be retraced from a sample of contemporary DNA sequences. In this paper, we propose a novel methodology based on importance sampling (IS) for exploring such demographic histories. Our starting point is the generalized skyline plot with the main difference being that our procedure, skywis plot, uses a large number of genealogies. T...