Abstract The development of new business models is essential for startups to become successful, as well established companies explore opportunities. However, developing such a continuous challenging activity where different tasks need be performed, and decisions made. Both have fit the constantly changeable situation in which model developed reduce risk ineffective with low market penetration. ...

Abstract. Endolithic microhabitats have been described as the last refuge for life in arid and hyper-arid deserts where has to deal with harsh environmental conditions. A number of rock substrates from Atacama Desert, colonized by endolithic microbial communities such halite, gypsum crusts, gypcrete, calcite, granite ignimbrite, characterized compared using different approaches. In this work, t...

A composition of n ∈ N is an ordered collection of one or more positive integers whose sum is n. The number of summands is called the number of parts of the composition. A palindromic composition of n is a composition of n in which the summands are the same in the given or in reverse order. In this paper we study the generating function for the number of compositions (respectively, palindromic ...