Calculate taxonomic, functional and phylogenetic diversity measures 
    through Hill Numbers proposed by Chao, Chiu and Jost (2014) 
    <doi:10.1146/annurev-ecolsys-120213-091540>.

A set of tools to create georeferenced hillshade relief 
    raster maps using ray-tracing and other advanced hill-shading 
    techniques. It includes a wrapper function to create a georeferenced,
    ray-traced hillshade map from a digital elevation model, and other
    functions that can be used in a rayshader pipeline.

Allows to estimate and test high-dimensional mediation effects based on advanced mediator screening and penalized regression techniques. Methods used in the package refer to Zhang H, Zheng Y, Zhang Z, Gao T, Joyce B, Yoon G, Zhang W, Schwartz J, Just A, Colicino E, Vokonas P, Zhao L, Lv J, Baccarelli A, Hou L, Liu L. Estimating and Testing High-dimensional Mediation Effects in Epigenetic Studies. Bioinformatics. (2016) <doi:10.1093/bioinformatics/btw351>. PMID: 27357171.

For supersonic aircraft, flying subsonic over land,
    find the best route between airports. Allow for coastal buffer and
    potentially closed regions. Use a minimal model of aircraft
    performance: the focus is on time saved versus subsonic flight, rather
    than on vertical flight profile. For modelling and forecasting, not for planning your
    flight!

H-index and h-alpha are a bibliometric indicators. This package 
  provides functions to simulate how these indicators may develop over time for
  a given set of researchers and to visualize the simulation data. 
  The implementation is based on the 'STATA' ado h-index and is described in 
  more detail in Bornmann et al. (2019) <arXiv:1905.11052>.

H(x) is the h-index for the past x years. Here, the h(x) of a scientist/department/etc. can be calculated using the exported excel file from a Web of Science citation report of a search. Also calculated is the year of first publication, total number of publications, and sum of times cited for the specified period. Therefore, for h-10: the date of first publication, total number of publications, and sum of times cited in the past 10 years are calculated. Note: the excel file has to first be saved in a .csv format.