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cellular automata (CA)
Simplest model of a spatially distributed process that can be used to simulate various real-world processes. Cellular automata were invented in the 1940s by John von Neumann and Stanislaw Ulam at Los Alamos National Laboratory. They consist of a two-dimensional array of cells that “evolve” step-by-step according to the state of neighbouring cells and certain rules that depend on the simulation. Though apparently simple, CAs are universal computers—that is, they can do any computer-capable computation. The best-known cellular automaton, John Conway's “Game of Life” (1970), simulates the processes of life, death, and population dynamics.
(2) (Continuous Availability) See fault tolerant.
(3) See Computer Associates.
Ca
CA
| 1. | (theory, architecture) | CA - cellular automaton. | |
| 2. | (company) | CA - Computer Associates. | |
| 3. | (cryptography) | CA - Certificate Authority. | |
| 4. | (networking) | ca - The country code for Canada. |
www.ca.gov
Area (sq mi): 163695.57 (land 155959.34; water 7736.23). Pop per sq mi: 231.70.
Pop 2005: 36,132,147. State rank: 0. Pop change: 2000-20005 6.70%; 1990-2000 13.80%. Pop 2000: 33,871,648 (White 46.70%; Black or African American 6.70%; Hispanic or Latino 32.40%; Asian 10.90%; Other 22.80%). Foreign born: 26.20%. Median age: 33.30.
Income 2000: per capita $22,711; median household $47,493; Pop below poverty level: 14.20%. *Personal per capita income 2000-2003: $32,464-$33,415.
Unemployment 2004: 6.20%. Change from 2000: 1.30%. Median travel time to work: 27.70 minutes. Working outside county of residence: 17.10%.
List of California counties:
- US National Parks
- Urban Parks
- State Parks
- Parks and Conservation-Related Organizations - US
- National Wildlife Refuges
- National Trails
- National Scenic Byways
- National Grasslands
- National Forests
- Marine Sanctuaries
Ca
(also, Song Ha), a river in the Democratic Republic of Viet-nam (DRV), originating in Laos. Length, approximately 500km. In its upper reaches, it cuts through spurs of the TruongSon, crosses a maritime plain, and then flows into the Gulf of BacBo (Tonkin) of the South China Sea. The water level is at itshighest during the summer. In its lower course, its waters areused for irrigation. The city of Vinh (DRV) is situated on theriver.
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