نتایج جستجو برای: flying
تعداد نتایج: 10319 فیلتر نتایج به سال:
Creating insect-scale flapping flight at the 0.1 gram size has presented significant engineering challenges. A particular focus has been on creating miniature machines which generate similar wing stroke kinematics as flies or bees. Key challenges have been thorax mechanics, thorax dynamics, and obtaining high powerto-weight ratio actuators. Careful attention to mechanical design of the thorax a...
One of the most robust ways of building a voluntarily controlled BCI that wouldnt require almost any training on behalf of the user, is through the P300 potential. In this study we implemented and evaluated a simple auditory P300-based musical interface. The interface consists of a dynamic 5-class auditory oddball paradigm. Each stimulus is tuned to a specific note, forming a part of a chord. A...
The use of high performance composite materials provides a substantial performance improvement for microrobotics. Such materials have great benefits over common MEMs materials such as better fracture toughness and fatigue properties than semiconductors, and higher stiffness to weight ratios than most metals. Composite structures yield remarkable improvements in microrobotic links and joints, as...
— Theories of justice in the spirit of Rawls and Harsanyi argue that fair-minded people should aspire to make choices for society as if in the original position, that is, behind a veil of ignorance that prevents them from knowing their own social positions. In this paper, we provide a fairly simple framework showing that preferences in front of the veil of ignorance (i.e., in face of everyday r...
Pteropid bats (flying-foxes) are the natural reservoir of Hendra virus, an emergent paramyxovirus responsible for fatal infection in horses and humans in Australia. Pteropus alecto (the Black flying-fox) and the paraphyletic P. conspicillatus (the Spectacled flying-fox) appear to be the primary reservoir hosts. Previous studies have suggested that physiological and ecological factors may underp...
Hendra virus (HeV) is a lethal paramyxovirus which emerged in humans in 1994. Poor understanding of HeV dynamics in Pteropus spp. (flying fox or fruit bat) reservoir hosts has limited our ability to determine factors driving its emergence. We initiated a longitudinal field study of HeV in little red flying foxes (LRFF; Pteropus scapulatus) and examined individual and population risk factors for...
BACKGROUND AND OBJECTIVES Modern learning theories suggest that particularly strong associative learning contributes to the etiology and maintenance of anxiety disorders, thus explaining why some individuals develop an anxiety disorder after a frightening (conditioning) event, whereas others do not. However, associative learning has rarely been investigated experimentally in specific phobias. T...
Four prototypes of biomimetic sensors have been designed and implemented for flight control of a robotic flying insect. The ocelli use four photodiodes to detect changes in light intensity in the surrounding. The halteres use piezoactuated vibrating structures to sense body rotational velocities via the Coriolis forces. The optic flow sensors consist of linear arrays of elementary motion detect...
High and Low alexithymia scorers were confronted with a modified visual oddball task that allows to study Categorical Perception of emotional expressions on faces. Participants had to quickly detect a deviant (rare) morphed face that shared or did not share the same emotional expression as the frequent one. Expected categorical perception effects, which were also neurophysiologically indexed, s...
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