Covid 19 pandemic force a lot of educational institution to shift their learning process from direct into indirect via eLearning. In fact, obstacle found when implementing effective eLearning system. This research use User Centered Requirement Engineering as methodology find the system requirement based on found. The main obstacles this are lack interaction between members eLearning, boredom an...

The individual determinants of vaccine acceptance among health workers (HCWs) have been described in the literature, but there is little evidence regarding impact characteristics and contextual factors (e.g., incentives, communication) on vaccination intentions. We developed a single profile discrete choice experiment (DCE) to assess seven attributes stated intention against an unnamed disease,...

The manifesto of ubiquitous computing is traditionally considered to be the justly famous 1991 visionary article written for Scientific American by the late Mark Weiser of Xerox PARC (Weiser, 1991). But the true birth date of this revolution, perhaps hard to pinpoint precisely, precedes that publication by at least a few years: Weiser himself first spoke of “ubiquitous computing” around 1988 an...

BACKGROUND An impressive number of studies have investigated bird vocal displays, and many of them have tried to explain the widespread phenomenon of the so-called dawn and dusk chorus, the sunrise and sunset peaks in bird song output. As many as twelve non-exclusive hypotheses have been proposed to explain why twilight peaks in vocal display might be advantageous; but, even after more than two...