We present a smoothed particle hydrodynamic (SPH) simulation that reproduces a galaxy that is a moderate facsimile of those observed. The primary failing point of previous simulations of disk formation, namely excessive transport of angular momentum from gas to dark matter, is ameliorated by the inclusion of a supernova feedback algorithm that allows energy to persist in the model ISM for a per...

background: developmental sentence scoring (dss) was developed as a numerical measurement and a clinical method based on the morphosyntactic acquisition in the english language. the aim of this study was to develop a new numerical tool similar to dss to assess the morphosyntactic abilities in persian-speaking children.   methods:  in this cross-sectional and comparative study, the language samp...

The scales used to describe the attributes of different choice options are usually open to alternative expressions, such as inches versus feet or minutes versus hours. More generally, a ratio scale can be multiplied by an arbitrary factor (e.g., 12) while preserving all of the information it conveys about different choice alternatives. We propose that expanded scales (e.g., price per year) lead...