Hematological reference ranges in black very low birth weight infants

This study compared hematological reference ranges in black very low birth weight infants to previously published values established predominantly on white subjects. Ninety-four healthy, black, premature babies with a birth weight of 800 to 1500 g at 2-7 days of age were enrolled as part of a study comparing blood transfusions and high-versus low-dose recombinant erythropoietin in anaemia of prematurity. Peripheral venous blood was collected for a full blood count and differential, fetal hemoglobin and erythropoietin levels. The hematological parameters observed in black very low birth weight neonates are similar to previously published reference ranges, except that lower limits of normal were observed for hemoglobin and the red cell indices

Using gunshot detection systems in police departments: The impact on police response times and officer workloads

Gunshot detection systems are defined as technologically advanced acoustic sensing systems capable of identifying, discriminating and reporting gun shots within one second of a shot being fired. Manufacturers of gunshot detection systems propose that the technology can significantly decrease officer response times to random gunfire calls for service as well as indi rectly control random gunfire problems. Our paper examines some of the organizational imphcations of using gunshot detection systems in local law enforcement agencies. Drawing from a two-month field trial of a gun shot detection system implemented in Dallas, Tex., our paper explores the impact of the technology on officer response times and officer workloads. Our results suggest that implementation of gunshot detection technology in Dallas reduced officer response times by about one minute (7% reduc tion) yet significantly increased officer workloads