There may be lack of motivation or the ability to begin an activity; the person tires easily once the activity has begun; and. the person has mental fatigue or difficulty with concentration and memory to start or complete an activity.
plural ID's or IDs : a document (such as a card) bearing identifying information about and often a photograph of the individual whose name appears on it â called also ID card, identification card, identity card
A graphical display of AIS data on board a ship. The automatic identification system (AIS) is an automatic tracking system used for collision avoidance on ships and by vessel traffic services (VTS). When satellites are used to detect AIS signatures, the term Satellite-AIS (S-AIS) is used.