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personal digital assistant

(Encyclopedia)personal digital assistant (PDA), lightweight, hand-held computer designed for use as a personal organizer with communications capabilities; also called a handheld. A typical PDA has no keyboard, rely...

Bellamy, Edward

(Encyclopedia)Bellamy, Edward bĕlˈəmē [key], 1850–98, American author, b. Chicopee Falls (now part of Chicopee), Mass. After being admitted to the bar he tried his hand at journalism and contributed short sto...

buoy

(Encyclopedia)buoy boi, bo͞oˈē [key], float anchored in navigable waters to mark channels and indicate dangers to navigation (isolated rocks, mine fields, cables, and the like). The shape, color, number, and mar...

motivation

(Encyclopedia)motivation, in psychology, the intention of achieving a goal, leading to goal-directed behavior. Some human activity seems to be best explained by postulating an inner directing drive. While a drive i...

Eriugena, John Scotus

(Encyclopedia)Eriugena or Erigena, John Scotus skōˈtəs ĕryo͞oˈjĭnə; ĕrĭjˈ– ĕrēˈ– [key] [Lat. Scotus=Irish, Eriugena=born in Ireland], c.810–c.877, scholastic philosopher, born in Ireland. About ...

Correggio

(Encyclopedia)Correggio kərĕjˈō [key], c.1494–1534, Italian painter, whose real name was Antonio Allegri, called Correggio for his birthplace. He learned the rudiments of art from his uncle Lorenzo Allegri. H...

Daumier, Honoré

(Encyclopedia)Daumier, Honoré ônôrāˈ dōmyāˈ [key], 1808–79, French caricaturist, painter, and sculptor. Daumier was the greatest social satirist of his day. Son of a Marseilles glazier, he accompanied his...

Albuquerque, Afonso de

(Encyclopedia)Albuquerque, Afonso de əfôNˈzō dĭ əlbo͞okĕrˈkə, –də älˌbəkĕrˈkə [key], 1453–1515, Portuguese admiral, the effective founder of the Portuguese Empire in the East. He first went to ...

Schoolcraft, Henry Rowe

(Encyclopedia)Schoolcraft, Henry Rowe, 1793–1864, American ethnologist, b. near Albany, N.Y. He gave enormous impetus to the study of Native American culture and may be regarded as the foremost pioneer in Native ...

behaviorism

(Encyclopedia)behaviorism, school of psychology which seeks to explain animal and human behavior entirely in terms of observable and measurable responses to environmental stimuli. Behaviorism was introduced (1913) ...