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The covariation of onset f 0 with voice onset time (VOT) was examined across and within phonological voicing categories in two languages, English and Spanish. The results showed a significant co-dependency between onset f 0 and VOT across phonological voicing categories but not within categories, in both languages. Thus, English short lag and long lag VOT(More)
Melatonin has been suggested as a potent antioxidant that may protect against development of atherosclerosis and cancer; however, these effects are unproven and controversial. The antioxidant capacity of melatonin was tested in comparison with alpha-tocopherol, ascorbic acid, and the melatonin precursors tryptophan and serotonin, by measuring inhibition of(More)
Mobile robots are an increasingly important part of search and rescue efforts as well as military combat. In order for users to accept these robots and use them effectively , the user must be able to communicate clearly with the robots and obtain explanations of the robots' behavior that will allow the user to understand its actions. This paper describes(More)
This video shows a demonstration of a fully autonomous robot, an iRobot ATRV-JR, which can be given commands using natural language. Users type commands to the robot on a tablet computer, which are then parsed and processed using semantic analysis. This information is used to build a plan representing the high level autonomous behaviors the robot should(More)
— Previous platforms for swarm robotics have relied on custom-manufactured mechanical assemblies for their mobility. Because these assemblies are usually handmade in limited numbers, they restrict the availability of swarm robots to organizations with large budgets. Recent attempts to avoid this problem , such as the Harvard Kilobots [Rubenstein et al.,(More)
Biological neuronal networks can be embodied in closed-loop robotic systems, with electromechanical hardware providing the neurons with the ability to interact with a real environment. Due to the difficulties of maintaining biological networks, it is useful to have a simulation environment in which pilot experiments can be run and new software can be(More)
Cultured embryonic neurons develop functional networks that transmit synaptic signals over multiple sequentially connected neurons as revealed by multi-electrode arrays (MEAs) embedded within the culture dish. Signal streams of ex vivo networks contain spikes and bursts of varying amplitude and duration. Despite the random interactions inherent in(More)
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