Evolutionary theory suggests that fecundity rates will plateau late in life in the same fashion as mortality rates. We demonstrate that late-life plateaus arise for fecundity in Drosophila melanogaster. The result qualitatively fits the evolutionary theory of late life based on the force of natural selection. But there are a number of alternative interpretations. Fecundity plateaus could be sec...

BACKGROUND Although life course influences have long been recognised in affective disorder, little is known about the influence of early life factors on late life anxiety and depression. The aim was to investigate the extent to which birth measures, maternal health and family circumstances were associated with symptoms of anxiety and depression in late life. METHODS A retrospective cohort stu...

Psychotic disorders in the elderly can be divided into three types: disorders that have started in earlier life and persist into old age; disorders that start de novo after the age of 60, and psychoses associated with brain disease, including the dementias. The classification of psychoses in late life has provoked controversy for nearly a century. The debate concerns whether schizophrenia can p...

Diet effects on age-dependent mortality patterns are well documented in a large number of animal species, but studies that look at the effects of nutrient availability on late-life mortality plateaus are lacking. Here, we focus on the effect of dietary protein content (low, intermediate, and high) on mortality trajectories in late life in the fruit fly Drosophila melanogaster. According to the ...

Software maintenance is the last phase of the software life cycle. The aim of the software maintenance is to maintain the software system in accordance with advancement in software and hardware technology. In this paper, we discuss a maintenance system for object-oriented techniques. The paper therefore discusses about a problems in object oriented techniques under the maintenance environment. ...