This paper is concerned with the classical Nicholson-Bailey model [15] defined by fλ(x, y) = (y(1 − e−x), λye−x). We show that for λ = 1 a heteroclinic foliation exists and for λ > 1 global strict oscillations take place. The important phenomenon of delay of stability loss is established for a general class of discrete dynamical systems, and it is applied to the study of nonexistence of periodi...

s_an.nt.bz2 for Spanish and Aragonese, respectively. Available from https://github.com/jimregan/ es-an-sentences Table 1: Example first sentences from the Wikipedia articles “Mar”. es Un mar es una masa de agua salada de tamaño inferior al océano an A mar u o mar ye una masa d’augua salada de grandaria inferior a l’ocián A sea is a body of salt water smaller than an ocean Table 2: Example extra...

Blowflies are an important parasite of the sheep industry in countries like Australia. For the purposes of prevention, control and elimination, it is of interest to investigate both temporal and spatial variations of the blowflies population using mathematical models. Based on the experimental data of Nicholson [14, 15], Gurney et al . [5] established a dynamical model, the Nicholson blowflies ...

This study applies social cognitive theory to the study of voter turnout, examining the effects of self-efficacy on citizens’ decisions of whether or not to vote. Consistent with recent arguments in cognitive psychology (Fenton-O’Creevy, Nicholson, Soane, & Willman, 2003, 2005), I argue that excessive perceptions of selfefficacy lead some citizens to overestimate their vote’s impact in close el...

Jody S. Nicholson, Department of Psychology, University of Notre Dame; Kimberley S. Howard, National Center for Children and Families, Teachers College, Columbia University; John G. Borkowski, Department of Psychology, University of Notre Dame. The first author was supported by Grant Number T32 HD07184-27 from the National Institute of Child Health and Human Development. The second author was s...

We show that a ring $R$ has stable range one if and only every left unit lifts modulo principal ideal. also quasi-morphic it is uniquely generated. Thus we answer in the affirmative two questions raised by W. K. Nicholson.