Mark Becker

Frederica P. Perera3
Virginia Rauh3
Sally Ann Lederman3
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OBJECTIVE This study was designed to determine whether prenatal mercury exposure, including potential releases from the World Trade Center (WTC) disaster, adversely affects fetal growth and child development. METHODS We determined maternal and umbilical cord blood total mercury of nonsmoking women who delivered at term in lower Manhattan after 11(More)
We have designed a research platform for a perceptually guided robot, which also serves as a demonstrator for a coming generation of service robots. In order to operate semi-autonomously, these require a capacity for learning about their environment and tasks, and will have to interact directly with their human operators. Thus, they must be supplied with(More)
The effects of prenatal exposure to pollutants from the World Trade Center (WTC) disaster on fetal growth and subsequent health and development of exposed children remain a source of concern. We assessed the impact of gestational timing of the disaster and distance from the WTC in the 4 weeks after 11 September on the birth outcomes of 300 nonsmoking women(More)
BACKGROUND Polycyclic aromatic hydrocarbons (PAHs), including benzo[a]pyrene (BaP), are air pollutants released by the World Trade Center (WTC) fires and urban combustion sources. BaP-DNA adducts provide a measure of PAH-specific genetic damage, which has been associated with increased risk of adverse birth outcomes and cancer. We previously reported that(More)
The objective of the NASA Global Climate Change Education (GCCE) project is to provide educators at the elementary, secondary, and undergraduate levels the tools and resources to access NASA climate information and related Earth system information, in order to engage students in critical thinking about global climate change and the potential impacts on(More)
When a change occurs during steady viewing it produces a transient that attracts attention, thereby allowing an observer to notice the change. If, however, a change occurs simultaneously with the onset of a set of distractors, the distractors also produce transients that compete for attention, the change becomes difficult to detect resulting in "change(More)
There has been an ongoing debate in the visual search literature on whether or not visual search has memory. One manipulation to test if memory is used in visual search has been to randomize the location of stimuli in an image every 111ms, which prevents observers from tracking the locations of previously inspected items. Horowitz and Wolfe (1998) used this(More)
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