We apply a functional-integral formalism for Markovian birth and death processes to determine asymptotic corrections to mean-field theory in the Malthus-Verhulst process (MVP). Expanding about the stationary meanfield solution, we identify an expansion parameter that is small in the limit of large mean population, and derive a diagrammatic expansion in powers of this parameter. The series is ev...

It is now well established that the metabolism of glycogen in the l iver p roceeds h y d r o l y t i c a l l y through the lysosomal compar tment (Geddes & Taylor, 1985; Geddes et al .~ 1983; Geddes & Stratton~ 1977a,b; LCillman-Rauch 1981, 1982; Knecht & Hernandez, 1978; Brown et al., 1978; Rybicka, 1981) as well as through the well-established s y n t h e t i c phospho ry ly t i c pathways (C...

In this paper the concept of carrying capacity is investigated to provide an improved understanding about its contribution to solve environmental problems. Light is shed on its form, interpretation and application in biology, demography, applied and human ecology. The analysis begins with an examination of the bedrock of carrying capacity which is Malthus’ population theory, and its mathematica...

To Malthus, rapid human population growth-so evident in 18th Century Europe-was obviously unsustainable. In his Essay on the Principle of Population, Malthus cogently argued that environmental and socioeconomic constraints on population rise were inevitable. Yet, he penned his essay on the eve of the global census size reaching one billion, as nearly two centuries of super-exponential increase ...

Este artigo buscou estudar em profundidade o perfil comportamental de um empreendedor no ramo produção bebidas gaseificadas, Gurupi, cidade do Estado Tocantins. O objetivo deste trabalho, além diagnosticar comportamento empreendedor, nos demais pormenores desenvolveres, abordar as origens e concepções iniciais empreendedorismo suas vertentes. Identificar percepções pensadores importantes para a...