The treat of bioterrorism means it is important to be able to diagnose smallpox. The responsibility for the initial recognition of cases lies with clinicians, and early diagnosis is the key to the successful control of an outbreak. Unless rapidly contained, a bioterrorist release of smallpox would constitute not just a national but a global threat to health. This brief review sets smallpox in i...

Viewing a ship as a weapon system is not a new concept. An excellent example is the Fleet Ballistic Missile (FBM) Submarine. Within its community, the FBM is perceived as a weapon system consisting of the weapon subsystem, the navigation subsystem, and the ship subsystem. There are good engineering reasons for this view: allocating resources, organizing information, and providing coordination. ...

The idea of using light as a weapon can be traced back to Hippocrates, commander of the Greek forces in 212 B.C. His forces supposedly set fire to the sails of the Roman fleet by focusing sunlight with mirrors. Weapons systems based on lasers and “ray guns,” long a staple of science fiction, have captured the imagination of people everywhere. But with steady progress toward the development of l...

PURPOSE To examine the relative contribution of weapon carrying of peers, aggression, and victimization to weapon carrying of male and female adolescents over time. METHODS Data were derived from a population-based sample of male (N = 224) and female (N = 244) adolescents followed from grade 10 (M age = 15.5) to grade 11 (M age = 16.5). Peer networks were derived from best friend nominations....