After seeing a scene containing an emotional component (e.g., a snake in a forest) people often demonstrate a "trade-off" in memory, where memory for the emotional component (e.g., the snake) is good, but memory for the nonemotional elements (e.g., the forest) is poor. The result is an incomplete memory retaining central emotional information at the expense of neutral background information. Th...

Eye movements during natural tasks suggest that observers do not use working memory to capacity but instead use eye movements to acquire relevant information immediately before needed. Results here however, show that this strategy is sensitive to memory load and to observers' expectations about what information will be relevant. Depending upon the predictability of what object features would be...

ÐIn this paper, we present a family of three algorithms which serve to perform checkpoints and to roll back Time Warp. These algorithms are primarily intended for use in simulations in which there are a large number of LPs and in which events have a small computational granularity. Important representatives of this class are VLSI and computer network simulations. In each of our algorithms, LPs ...

Many-core processor based systems gain popularity in high-performance parallel embedded applications. Estimating memory bandwidth requirement, i.e. external memory bandwidth, given various cache size for target parallel applications requires a prohibitively large simulation time. In this work, we propose an analytical model to quickly estimate the memory bandwidth for a given cache size and hel...

Why are performance trade-offs so rarely detected in animals when their underlying physiological basis seems so intuitive? One possibility is that individual variation in health, fitness, nutrition, development or genetics, or 'individual quality', makes some individuals better or worse performers across all motor tasks. If this is the case, then correcting for individual quality should reveal ...

Immune activity is variable in many wild animals, despite presumed strong selection against immune incompetence. Much variation may be due to changes in prevalence and abundance of pathogens (and/or their vectors) in time and space, but the costs of immune defenses themselves may also be important. Induction of immune activity often increases energy and protein expenditure, sometimes to the poi...

We consider the energy complexity of leader election problem in single-hop radio network model, where each device v has a unique identifier ID ( ) ∈{ 1, 2, ⋖ , N } . Energy is scarce resource for small battery-powered devices. For such devices, most often spent on communication, not computation. To approximate actual cost, an algorithm defined as maximum over all devices number time slots trans...

While there are known performance trade-offs between database page buffer pool and query execution memory allocation policies, little has been written on the impact of query compilation memory use on overall throughput of the database management system (DBMS). We present a new aspect of the query optimization problem and discuss a solution implemented in Microsoft SQL Server 2005. The solution ...