916 resultados para threshold crossing


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Uncountable gangs operate in post-Apartheid South Africa, particularly in greater Cape Town, competing over turf and controlling the drug trade. Consequently, gang violence is rife in Western Cape and especially widespread in urban areas. In this paper young Capetonians’ narratives of gang violence are analyzed. In the narratives of attacks on Black or White South Africans by Coloured gang members, the Coloured narrators make use of their victims’ varieties of English, more precisely, of phonetic features. Hence, the aggressors do language crossing towards their targets when narrating their feats. Rampton (1995a:485) considers language crossing a ‘code alternation by people who are not accepted members of the group associated with the second language that they are using (code switching into varieties that are not generally thought to belong to them)’. This switching involves a transgression of social or ethnic boundaries that allows the young gangsters to construct, negotiate, uphold and manage their social identities, as language still functions as an utterly important identity marker in post-Apartheid South Africa.

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Previous research suggests that people tend to see faces in car fronts and that they attribute personality characteristics to car faces. In the present study we investigated whether car design influences pedestrian road-crossing behaviour. An immersive virtual reality environment with a zebra crossing scenario was used to determine a) whether the minimum accepted distance for crossing the street is larger for cars with a dominant appearance than for cars with a friendly appearance and b) whether the speed of dominant-looking cars is overestimated as compared to friendly-looking cars. Participants completed both tasks while either standing on the pavement or on the centre island. We found that people started to cross the road later in front of friendly-looking low-power cars compared to dominant-looking high-power cars, but only if the cars were relatively large in size. For small cars we found no effect of power. The speed of smaller cars was estimated to be higher compared to large cars (size-speed bias). Furthermore, there was an effect of starting position: From the centre island, participants entered the road significantly later (i. e. closer to the approaching car) and left the road later than when starting from the pavement. Similarly, the speed of the cars was estimated significantly lower when standing on the centre island compared to the pavement. To our knowledge, this is the first study to show that car fronts elicit responses on a behavioural level.

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On negative sleeve: A suggestion of warmer days ahead for winter-weary Michiganders is contained in this early spring picture, taken from the Michigan Union looking across to Alumni Memorial Hall just as students leave classes at the noon hour

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Ohio Department of Transportation, Columbus

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Ohio Department of Transportation, Columbus

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Mode of access: Internet.

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Federal Railway Administration, Office of Safety, Washington, D.C.

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National Highway Traffic Safety Administration, Washington, D.C.

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Mode of access: Internet.