Generating fully developed speckle in a repeatable way is of interest to ongoing scaled-laboratory experiments. Such experiments often look to validate theoretical and numerical predictions for numerous laser-based applications. Unfortunately, experimental constraints such as camera-pixel sampling, residual-sensor noise, and cover-glass etaloning limit one's ability to match the statistics of fully formed speckle in a straightforward way.
View Article and Find Full Text PDFBackground: In 2012, Michigan repealed its universal helmet law. Our study assessed the clinical impact of this repeal.
Methods: Our trauma database was queried retrospectively for 2 motorcycle riding seasons before and 3 seasons after repeal.
Background: Teenage substance misuse and pregnancy are major public health problems in the UK, where the most recent figures on maternal deaths suggest that they have doubled among young substance misusers. In general, little is known about their pregnancy outcomes.
Aims: The aims of this study were to describe the characteristics of a sample of teenage pregnant drug users in the UK, to examine their psychosocial risk and complicating factors at presentation, to evaluate adherence to current national guidelines and to assess the adequacy of guidelines in relation to identified characteristics.