The effectiveness of Iowa's graduated driver's licensing (GDL) program was evaluated for a 4-year period before and after implementation in 1999. Since some changes had occurred in the crash reporting format, changes in crash rates for younger drivers were compared to those for 35-44-year-old drivers (middle-age group of drivers) who were used as a control group. After implementation of GDL, th...

Noise-corrupted signals and images can be reconstructed by regularization. If discontinuities must be preserved in the reconstruction, a non-convex solution space is implied. The solution of minimum energy can be approximated by the Graduated Non-Convexity (GNC) algorithm. The GNC approximates the non-convex solution space by a convex solution space, and varies the solution space slowly towards...

background: precarious employment is a major social determinant of health and health inequalities with effects beyond the health of workers. objective: to investigate the association between precarious employment and sickness absence in 4 nordic countries, denmark, finland, norway, and sweden. methods: logistic regression analyses were conducted separately for each country on data from 4186 res...

The treatment of venous ulcers has remained largely unchanged for centuries. The application of properly applied graduated compression bandages, the use of graduated compression stockings, and surgery have been shown to achieve healing. However, some ulcers persist despite appropriate management. A randomized study was undertaken to compare two regimens of treatment for such patients. Both regi...