Michal Lahav

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Current research on social networking largely covers US providers. To investigate broader trends, we examine cross-cultural differences in the usage patterns of social networking services with observation and ethnographic interviews in multiple cultures. This appears to be the first systematic investigation of social networking behavior across multiple(More)
Drusen are yellowish deposits at the level of the retinal pigment epithelium and are frequently associated with age-related maculopathy (ARM). Drusen often change in size and number over time and may be followed by atrophic or exudative macular degeneration. A quantitative method to measure the development of drusen is needed for controlled studies of the(More)
It has been shown that the atypical antipsychotic drug clozapine increases the levels of the neurosteroid allopregnanolone in the rat brain. The 18 kDa translocator protein (TSPO), formerly known as the peripheral-type benzodiazepine receptor, has been demonstrated to be involved in the process of steroid biosynthesis, in peripheral steroidogenic tissues as(More)
This study investigated cues that permit prediction of turns during passive movement through a virtual environment. Effects on simulator sickness (SS), presence and enjoyment were examined. Subjects were exposed to complex visual motion through a cartoon-like simulated environment in a driving simulator. Forward velocity remained constant and the motion(More)
This report presents a simple and convenient method to generate nanoscale fractures (cracks) in smooth, single-crystalline Si substrates. The cracks propagated as approximately straight lines along the {100} crystal planes with controllable length defined by a stabilizing backlayer. Close to its tip, the crack presented a vertical offset of the two planes(More)
This study developed a new procedure, a Virtual Guiding Avatar (VGA), which combined self-motion prediction cues and an independent visual background (IVB) to alleviate simulator sickness (SS). The VGA, which was embodied as an abstract airplane, was designed to lead the participant along a horizontal motion trajectory through a virtual environment. Both(More)
This paper describes a photolithographic method to create sub-micron-scale patterns of cation-cross-linked poly(acrylic acid) (CCL-PAA). PAA can be cross-linked with a wide range of metal cations—including, but not limited to, Ag 3+ , and Ti 4+. Upon patterning a positive photoresist (diazonaphthoquinone-novolac resin) on a film of CCL-PAA, the exposed(More)