The recent emergence of multicore architectures and chip multiprocessors (CMPs) has accelerated the bandwidth requirements in high-performance processors for both on-chip and off-chip interconnects. For next generation computing clusters, the delivery of scalable power efficient off-chip communications to each compute node has emerged as a key bottleneck to realizing the full computational perf...

Compared with serial structured machine tools and robots, parallel kinematic machine tools and robots have many advantages. Many different topologies of parallel mechanisms with 3-6 DOF have been used. Considering that some limitations are indeed due to the use of parallel mechanisms, it is appealing to investigate architectures based on hybrid arrangements where serial and parallel concepts ar...

Serial dictatorships have emerged as natural direct mechanisms in the literature on the allocation of indivisible goods without transfers. Svensson (Social Choice and Welfare, 1999) previously showed that serial dictatorships are the only neutral and group–strategy-proof mechanisms when agents have no outside options and individual rationality constraints do not exist. In this paper, we take in...

Developmental dyslexia affects up to 10 per cent of the population and it is important to understand its causes. It is widely assumed that phonological deficits, that is, deficits in how words are sounded out, cause the reading difficulties in dyslexia. However, there is emerging evidence that phonological problems and the reading impairment both arise from poor visual (i.e., orthographic) codi...

Threat-sensitive behavioral trade-offs allow prey animals to balance the conflicting demands of successful predator detection and avoidance and a suite of fitness-related activities such as foraging, mating, and territorial defense. Here, we test the hypothesis that background predation level and reproductive status interact to determine the form and intensity of threat-sensitive behavioral dec...

We describe an interactive, computer-based test inspired by the Trail Making Test (TMT). In this new test, young (mean age = 20.4 years) and older participants (mean age = 74.9 years) used natural, pointing responses to order series of numbers, letters, or intermixed letters and numbers. This interactive test, which avoids several deficiencies of TMT, assesses participants' baseline speed for d...

The researchers designed this study to demonstrate the role played by the phonological loop as defined by Baddeley's model of working memory (2000). The operation of the phonological loop can be disrupted by oral repetition of sounds while attempting to utilize working memory, a task known as articulatory suppression. The study utilized a between-group, experimental design to demonstrate the ef...

Repetition blindness (Kanwisher, 1986, 1987) has been defined as the failure to detect or recall repetitions of words presented in rapid serial visual presentation (RSVP). The experiments presented here suggest that repetition blindness (RB) is a more general visual phenomenon, and examine its relationship to feature integration theory (Treisman & Gelade, 1980). Experiment 1 shows RB for letter...

PURPOSE Crowding, the increased difficulty in recognizing a target due to the proximity of adjacent objects, is identified as the main sensory constraint for the size of the visual span (the number of letters recognized without moving the eyes) and reading speed in peripheral vision. The goal of the present study is to assess the impact of temporal modulation on crowding, visual span, and readi...

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