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Previous work has amply demonstrated divided attention "costs" both in single-task multistimulus visual processing and in performance of multiple simple tasks; however, the relationship between the two has not been clarified. This article postulates two distinct causes: (1) visual processes that commence without delays and proceed simultaneously, but show(More)
Want to know what I think the next UI breakthroughs will be? Here are two, both of which can be considered a return to fundamentals: 1. Command line languages 2. Physicality: the return to physical devices, where we control things by physical movement ; turning, moving, and manipulating appropriate mechanical devices This column discusses the return to(More)
The occurrence of neuropeptides in rat brown adipose tissue has been investigated. Immunohistochemical studies on interscapular and perirenal brown fat have demonstrated unequivocally the presence of substance-P (SP)-like, neuropeptide-Y (NPY)-like and calcitonin gene related-peptide (CGRP)-like immunoreactive elements (putative nerves) in adventitial(More)
Studies of IT for development have often identiªed the importance of the usability of IT systems and the need for IT systems to be matched to the needs of host communities. These two issues are central concerns for the discipline of Human–Computer Interaction (HCI), or Interaction Design. Within HCI and Interaction Design, user-centered design is just one(More)
Following demonstration of noradrenergic and peptidergic nerves in rat interscapular brown adipose tissue, neuronal courses were investigated with reference to both the segmentally derived nerve traversing the fat pad and to paravascular projections, employing respectively, sucrose potassium glyoxylic acid and indirect immunofluorescence methodologies.(More)
We report on the methodology and first results from the Deep Lens Survey (DLS) transient search. We utilize image subtraction on survey data to yield all sources of optical variability down to 24 th magnitude. Images are analyzed immediately after acquisition, at the telescope and in near–real time, to allow for followup in the case of time–critical events.(More)
We report a search for effects of large extra spatial dimensions in pp collisions at a center-of-mass energy of 1.8 TeV with the D0 detector, using events containing a pair of electrons or photons. The data are in good agreement with the expected background and do not exhibit evidence for large extra dimensions. We set the most restrictive lower limits to(More)
Guidelines for usability test tasks: engage participants by writing task scenarios that are realistic, encourage an action, and don't give away how the interface should be used. The most effective way of understanding what works and what doesn't in an interface is to watch people use it. This is the essence of usability testing. When the right participants(More)