We show that the definition of the θth sample quantile as the solution to a minimization problem introduced by Koenker and Basset [1978] can be easily extended to obtain an analogous definition for the θth sample quantity quantile instead of the usual one. By means of this definition we introduce a linear regression model for quantity quantiles and analyze some properties of the residuals. In s...

The global terrestrial heterotrophic respiration is estimated at about 60 Gt C yr-1 (Schlesinger, 1991). Plant litter produced during senescence processes and plant residues left on site after harvest operations are the primary substrate for heterotrophic respiration in plant-soil ecosystems. They constitute both of aboveground and belowground plant parts. Substrate quality, together with the p...

High-density lipoprotein (HDL) particles are characterized by their heterogeneity in composition, structure, and biological properties. In addition to the major structural protein apolipoprotein A1, HDL proteomes and lipidomes show great diversity. Such constituents presumably carry out the multitude of HDL functions, for example, reverse cholesterol transport, antioxidant, anti-inflammatory, a...

In temporal-logic model checking, we verify the correctness of a program with respect to a desired behavior by checking whether a structure that models the program satis es a temporal-logic formula that speci es the behavior. The model-checking problem for the branching-time temporal logic CTL can be solved in linear running time, and model-checking tools for CTL are used successfully in indust...