Progress of Street Lighting in America and Europe

Street Lighting Disturbs Commuting Bats

Anthropogenic disturbance is a major cause of worldwide declines in biodiversity. Understanding the implications of this disturbance for species and populations is crucial for conservation biologists wishing to mitigate negative effects. Anthropogenic light pollution is an increasing global problem, affecting ecological interactions across a range of taxa and impacting negatively upon critical ...

Discussion of "Electrocution by Street Lighting".

Street Gang Violence in Europe

Levels and descriptors of violence among European street gangs are summarized from studies reported primarily under the aegis of the Eurogang Program initiated in 1997 and continuing still. European gang violence is placed in the context of its American counterpart, of European non-gang youth violence, and of the definitional and structural components of the Eurogang Program. European gangs in ...

Mathematical Progress in America.

In the remarks that follow, I shall limit myself to a brief consideration of progress in pure mathematics. This I may do the more appropriately, inasmuch as one of my predecessors, Professor R. S. Woodward, at the annual meeting of 1899, gave an account of the advances made in applied mathematics during the nineteenth century. In his address, which was published in the Bulletin for January, 190...

Comparison of real street lighting with sodium lamps and LEDs

The paper presents the comparison of luminous and electrical properties of modern LED-based luminaires with properties of the conventional luminaires with high pressure sodium lamp. It collects available product information of compared luminaires with measured luminous and electrical properties of them to allow a reader to take a view of mentioned luminaire properties. The most important values...