Columbia Encyclopedia

Search results

500 results found

fuzzy logic

(Encyclopedia)fuzzy logic, a multivalued (as opposed to binary) logic developed to deal with imprecise or vague data. Classical logic holds that everything can be expressed in binary terms: 0 or 1, black or white, ...

Narayan, R. K.

(Encyclopedia)Narayan, R. K. (Rasipuram Krishnaswami Narayan) nərīˈyän [key], 1906–2001, Indian novelist, b. Madras (now Chennai). Narayan, who wrote in English, published his first novel, Swami and Friends, ...

New Thought

(Encyclopedia)New Thought, popular philosophical movement with religious implications; it affirms “the creative power of constructive thinking.” A successor of New England transcendentalism, New Thought grew ou...

Niebuhr, Reinhold

(Encyclopedia)Niebuhr, Reinhold rīnˈhōld nēˈbo͝or [key], 1892–1971, American religious and social thinker, b. Wright City, Mo. A graduate of Yale Divinity School, he served (1915–28) as pastor of Bethel E...

Wells-Barnett, Ida Bell

(Encyclopedia)Wells-Barnett, Ida Bell, 1862–1931, African-American civil-rights advocate and feminist, b. Holly Springs, Miss. Born a slave, she attended a freedman's school and was orphaned at 16. She moved (188...

business ethics

(Encyclopedia)business ethics, the study and evaluation of decision making by businesses according to moral concepts and judgments. Ethical questions range from practical, narrowly defined issues, such as a company...

Botha, Pieter Willem

(Encyclopedia)Botha, Pieter Willem pēˈtər vĭlˈəm bōˈtə [key], 1916–2006, South African political leader. An Afrikaner and a member of the right-wing National party, he first entered parliament in 1948. B...

Bourgeois, Louise

(Encyclopedia)Bourgeois, Louise bo͞orzhwäˈ [key], 1911–2010, French-American sculptor, b. Paris. She married the art historian Robert Goldwater in 1938, emigrated to the United States, and became a citizen. He...

Brunel, Sir Marc Isambard

(Encyclopedia)Brunel, Sir Marc Isambard ĭzˈəmbärdˌ bro͞onĕlˈ [key], 1769–1849, British engineer and inventor. Born in France, he came to the United States in 1793 as a royalist refugee. He became chief en...

stratigraphy

(Encyclopedia)stratigraphy, branch of geology specifically concerned with the arrangement of layered rocks (see stratification). Stratigraphy is based on the law of superposition, which states that in a normal sequ...