Sesamoid bones over the metatarsophalangeal joint of the great toe of the left foot of an adult woman. 1  In the neck-Although the hyoid bone is free floating, it is not technically a sesamoid bone. 2  All sesamoid bones form directly from the connective tissue found in tendons and ligaments. In the hand â two sesamoid bones are commonly found in the distal portions of the first metacarpal bone (within the tendons of adductor pollicis and flexor pollicis brevis).
Short for spatial division multiple access, SDMA is a satellite communications mode for using data from antenna arrays in wireless communications systems. At the base station, SDMA continually adapts to the radio environment, providing each user with uplink and downlink signals of the highest possible quality. At the network level, this improved base station performance can be exploited to increase base station range. [Adapted from 'Intelligent Antennas: Spatial Division Multiple Access']
The Strategic Defense Initiative (SDI) was a proposed missile defense system intended to protect the United States from attack by ballistic strategic nuclear weapons (Intercontinental ballistic missiles and Submarine-launched ballistic missiles).