We analyze the performance of several copying garbage collection algorithms in a large address space offered by modern architectures. In particular, we describe the design and implementation of the RealOF garbage collector, an algorithm explicitly designed to exploit the features of 64-bit environments. This collector maintains a correspondence between object age and object placement in the add...

The central idea of coevolution lies in the fact that the fitness of an individual depends on its performance against the current individuals of the opponent population. However, coevolution has been shown to have problems [2,5]. Methods and techniques have been proposed to compensate the flaws in the general concept of coevolution [2]. In this article we propose a different approach to impleme...

The adaptive value of facultative maternal adjustment of offspring immunity, or trans-generational immune-priming, will depend on the ecological background. In particular, where there is a mismatch between the immune adjustment and offspring environment, the immunological link between mothers and offspring may be disadvantageous owing to the presence of associated costs. Costs to an individual ...

While uniprocessor garbage collection is relatively well understood, experience with collectors for large multiprocessor servers is limited and it is unknown which techniques best scale with large memories and large numbers of processors. In order to explore these issues we designed a modular garbage collection framework in the IBM Jalapeño Java virtual machine and implemented five different pa...

As object oriented features are added to programming languages such as C demands upon dynamic memory allocation systems increase Prototyping languages such as Smalltalk and LISP have long rec ognized the impact of garbage collection on improving reliability and programmer productivity but providing garbage collection in C is hard because pointers are di cult to reliably identify Conser vative g...

BACKGROUND Sexual behavioural change is essential to prevent HIV infections in Africa and statistical analysis of risk factors at the individual-level may be used to design interventions. The importance of reducing cross-generational sex (young women having sex with older men) and delaying age at first sex on the spread of HIV at the population-level has been presumed but not scientifically inv...