The apparently deleterious effect of aging on dual-task performance is well established, but there is little agreement about the source of this effect. Studies of the psychological refractory period (PRP) indicate that young adults can flexibly control dual-task performance through task-coordination strategies. Thus, the performance of older adults might differ from young adults because older a...

Why is the human brain fundamentally limited when attempting to execute two tasks at the same time or in close succession? Two classical paradigms, psychological refractory period (PRP) and task switching, have independently approached this issue, making significant advances in our understanding of the architecture of cognition. Yet, there is an apparent contradiction between the conclusions de...

Cloud Data Scaling Total data produced per year surpassed one zettabyte in 2010 and continues to more than double every two years.3 To put this in perspective, about two zettabytes (ZB) of digital universe will be created (per IDC) in 2011 is two million terabytes, or over one million new 3.5" SATA disks with two terabyte (TB) capacities. At the same time, not only is total data stored growing ...

Radio technology seems destined to become part of the standard micro-processor input/output system. But unlike for memory or display systems, for radio systems government regulation matters a lot. Much discussion of radio regulation has focused on narrow spectrum management and interference issues. Reflecting on historical experience and centuries of conversation about fundamental political cho...