Submarine Telegraphs

Quick gossiping by telegraphs

We consider gossiping in the complete doubly directed graph, i.e. telegrams arranged in rounds are used to exchange information between n points each having one initial item. It is proved that at least 1:44. .. log 2 n rounds are needed to inform everybody about those n distinct items of information.

Naval Submarine Medical Research Laboratory Submarine Base , Groton , Conn

Exploratory in nature, this study was designed to identify some of the personality trait configurations and attitude change patterns related to individual differences in cold coping capacity (CCC). Three enlisted marines participated in a week-long cold weather North Atlantic Treaty Organization (NATO) combat exercise in upper Norway. The Minnesota Multiphasic Personality Inventory (MMPI) was a...

Submarine Medical Research Laboratory Submarine Base , Groton , Conn

Plasma vitamin C levels were determined for 28 submariners prior to, during, and after a 68-day patrol. A significant reduction occurred in plasma vitamin C levels during the patrol compared to levels obtained before and after the patrol. These reductions were unrelated to health and performance effects as determined by total dispensary visits, frequency of upper respiratory infections, and tra...

U.s. Naval Submarine Medical Center Naval Submarine Base, New London

Submarine Capability Optimisation

Procurement of high value defence assets, such as ships, submarines and aircraft requires rigorous analysis to ensure the system procured will perform as required in the operation. To achieve this, system and subsystem modelling can be conducted to determine how the subsystem choices affect the whole system performance. This should be linked to a capability analysis to relate the subsystem perf...