| | - Deception Bay
- bay and resort town, southeastern Queensland, Australia. In 1823 the explorer John Oxley named the local stream the Deception River (now called the Caboolture River), because of the numerous shoals at its mouth. The river gave its name to the ...
- Deception Island
- one of the South Shetland Islands, in the Drake Passage, off the Antarctic Peninsula. It is a sunken volcano, the crater of which, about 10 miles (16 km) in diameter, forms one of the best anchorages in the Antarctic. The ... [2 Related Articles]
- deceptive cadence
- (from the article "cadence") A deceptive cadence begins with V, like an authentic cadence, except that it does not end on the tonic. Often the triad built on the sixth degree (VI, the submediant) substitutes for the tonic, with which it shares two of ...
- deceptive coloration
- (from the article "coloration") Deceptive coloration depends on four factors: the coloured organism, hereafter referred to as the organism; its model, which may be the background against which it is concealed; the spectral quality of the illumination; and the visual sensitivity and behaviour of ...
- Decet Romanum pontificem
- (from the article "Luther, Martin") The ensuing bull of excommunication, Decet Romanum pontificem ("It Pleases the Roman Pontiff"), was published on Jan. 3, 1521. Martin Luther was formally declared a heretic. Ordinarily, those condemned as heretics were apprehended by an authority of ...
- Dechelette, Joseph
- French archaeologist and author of an important work covering the entire field of the prehistory of France, Le Manuel d'archeologie prehistorique, celtique et gallo-romaine (1908-14; "Textbook of Prehistoric, Celtic, and Gallo-Roman Archaeology").
- decibar
- (from the article "ocean") ...the effect of pressure on the density of seawater at 35000 and 0° C (Table 6). Because a one-metre column of seawater produces a pressure of about one decibar (0.1 atmosphere), the pressure in decibars is approximately equal to the ...
- decibel
- (dB), unit for expressing the ratio between two amounts of electric or acoustic power or for measuring the relative loudness of sounds. One decibel (0.1 bel) equals 10 times the common logarithm of the power ratio-i.e., doubling the intensity of ... [7 Related Articles]
- decidability
- (from the article "metalogic") ...concept of a formal axiomatic system, because it is no longer necessary to leave "mechanical" as a vague nonmathematical concept. In this way, too, they have arrived at sharp concepts of decidability. In one sense, decidability is a property of ...
- decidua basalis
- (from the article "pregnancy") The layer of endometrium closest to the encroaching conceptus forms, with remnants of the invading syncytio-trophoblast, a thin plate of cells known as the decidua basalis, the maternal component of the mature placenta; it is cast off when the placenta ...
- deciduate placenta
- (from the article "mammal") ...of the uterus. The resulting complex of embryonic and maternal tissues is a true placenta. The uterine lining may be shed with the fetal membranes as "afterbirth" (a condition called deciduate) or may be resorbed by the female (nondeciduate). Placentas ...
- deciduous forest
- vegetation composed primarily of broad-leaved trees that shed all their leaves during one season. Deciduous forest is found in three middle-latitude regions with a temperate climate characterized by a winter season and year-round precipitation: eastern North America, western Eurasia, and ... [3 Related Articles]
- deciduous plant
- (from the article "scrubland") The dominant shrubs may be deciduous, losing their leaves for significant periods of time when moisture is in short supply; if they are evergreen their leaves are small and tough and total leaf area is relatively low. They also typically ...
- deciduous tree
- (from the article "plant development") In the temperate zone, some time before winter begins, growth ceases in the shoots of woody plants, resting buds are formed, and deciduous trees lose their leaves. The resting bud consists of a short axis, with the stem apex surrounded ...
- decimal fraction
- (from the article "Stevin, Simon") In 1585 Stevin published a small pamphlet, La Thiende ("The Tenth"), in which he presented an elementary and thorough account of decimal fractions and their daily use. Although he did not invent decimal fractions and his notation was rather unwieldy, ...
- decimal number system
- in mathematics, positional numeral system employing 10 as the base and requiring 10 different numerals, the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. It also requires a dot (decimal point) to represent decimal fractions. In this ... [10 Related Articles]
- decimetre radiation
- (from the article "Jupiter") ...that Jupiter is also a source of steady radio emission. It has become customary to refer to these two types of emission in terms of their characteristic wavelengths-decametre radiation and decimetre radiation.
- Decin
- city, northwestern Czech Republic, in the gorge of the Elbe (Labe) River and near the German border. Dominated by its 18th-century castle on a 165-foot (50-metre) crag, it is the economic and cultural centre of a scenic tourist region noted ...
- decision
- (from the article "boxing") ...physician) to be unable to defend himself properly, when a boxer is deemed to have sustained a serious injury, or when a boxer or his seconds decide he should not continue. A bout may also end in a decision when ...
- decision lag
- (from the article "government economic policy") The decision lag is the period between the time when the need for action is recognized and the time when action is taken. Although the recognition lag is presumably of about the same duration for both monetary and fiscal policies, ...
- decision making
- (from the article "thought") ...the ability to discriminate discrete objects or items of information (e.g., distinguishing a lion from a tiger). The outcome is a judgment, and accordingly the process may be called decision making. The availability of information, the rate at which it ...
- decision problem
- for a class of questions in mathematics and formal logic, the problem of finding, after choosing any question of the class, an algorithm or repetitive procedure that will yield a definite answer, "yes" or "no," to that question. The method ... [5 Related Articles]
- decision strategy
- (from the article "statistics") ...the new product. A decision tree is a graphical device that is helpful in structuring and analyzing such problems. With the aid of decision trees, an optimal decision strategy can be developed. A decision strategy is a contingency plan that ...
- decision theory
- in statistics, a set of quantitative methods for reaching optimal decisions. A solvable decision problem must be capable of being tightly formulated in terms of initial conditions and choices or courses of action, with their consequences. In general, such consequences ... [5 Related Articles]
- decision tree
- (from the article "statistics") ...will then decide whether or not to proceed with further test marketing; after analyzing the results of the test marketing, company executives will decide whether or not to produce the new product. A decision tree is a graphical device that ...
- decision-support system
- (from the article "information system") All information systems support decision making, however indirectly, but decision support systems are expressly designed for this purpose. The two principal varieties of decision support systems are model-driven and data-driven.operations research
- Decius
- Roman emperor (249-251) who fought the Gothic invasion of Moesia and instituted the first organized persecution of Christians throughout the empire. [6 Related Articles]
- deck
- (from the article "playing card") The most successful and universally recognized deck of cards is that based on a complement of 52, divided into four suits, each containing 13 ranks, so that each card is uniquely identifiable by suit and rank.
- deck
- (from the article "dock") ...over the water, usually at right angles to the shoreline. Vessels can be moored to the pier, which serves as a transfer platform for cargo and passengers. A pier is composed of two main parts: the deck and its supporting ...
- deck
- (from the article "ship") ...desired course of the ship and the present wind direction, the square sail must be twisted on the mast to present an edge to the wind. Among other things this meant that most ships had to have clear decks amidships ...
- deck beam
- (from the article "ship") The traditional ship hull structure consists of a keel, transverse frames, and cross-ship deck beams that join the frame ends-all supporting a relatively thin shell of deck, sides, and bottom. This structural scheme, which became prevalent with European ships during ...
- deck chair
- (from the article "Klint, Kaare") ...he did not advocate modernity for its own sake. He made painstaking studies in drawing of human requirements and functions, balancing a beautiful appearance with a fulfillment of purpose. His teak deck chair of 1933, for example, is unquestionably functional ...
- deck department
- (from the article "ship") As powered ships developed in the 19th century, their crews evolved into three distinct groups: (1) the deck department, which steered, kept lookout, handled lines in docking and undocking, and performed at-sea maintenance on the hull and nonmachinery components, (2) ...
- deck tennis
- game for two or four players, designed for the limited space aboard ship and also played as a garden game. It combines lawn tennis and quoits. A rubber ring, or quoit, is thrown across a net. It must be caught ...
- Decken, Karl Klaus von der
- German explorer in eastern Africa and the first European to attempt to scale Mount Kilimanjaro. [1 Related Articles]
- Decker, Alonzo Galloway, Jr.
- American business executive (b. Jan. 18, 1908, Orangeville, Md.-d. March 18, 2002, Earleville, Md.), transformed Black & Decker, a power-tool company cofounded by his father, into a corporate giant. Decker went to work at the company after graduating from Cornell ...
- Decker, Mary
- (from the article "Zola Budd: Collision and Controversy") ...name at the 1984 Olympics in Los Angeles. Rather, the 18-year-old Budd found herself in the unflattering glare of the spotlight after a collision with her idol-and rival-American Mary Decker (later Mary Decker Slaney). Earlier that year Budd had broken ...
- Declaration of Independence
- in U.S. history, document that was approved by the Continental Congress on July 4, 1776, and that announced the separation of 13 North American British colonies from Great Britain. It explained why the Congress on July 2 "unanimously" by the ... [25 Related Articles]
- Declaration of the Rights of Man and of the Citizen
- one of the basic charters of human liberties, containing the principles that inspired the French Revolution. Its 17 articles, adopted between August 20 and August 26, 1789, by France's National Assembly, served as the preamble to the Constitution of 1791. ... [12 Related Articles]
- declarative language
- (from the article "computer programming language") Declarative languages, also called nonprocedural or very high level, are programming languages in which (ideally) a program specifies what is to be done rather than how to do it. In such languages there is less difference between the specification of ...
- declarative memory
- (from the article "memory") ...all of the other memories stored in the brain. The items stored in long-term memory represent facts as well as impressions of people, objects, and actions. They can be classified as either "declarative" or "nondeclarative," depending on whether their content ...
- Declaratory Act
- (from the article "Ireland") ...in subordination to that of England but ended in asserting its independence. In the 1690s commercial jealousy compelled the Irish Parliament to destroy the Irish woolen export trade, and in 1720 the Declaratory Act affirmed the right of the British ...
- Declaratory Act
- (1766), declaration by the British Parliament that accompanied the repeal of the Stamp Act. It stated that the British Parliament's taxing authority was the same in America as in Great Britain. Parliament had directly taxed the colonies for revenue in ... [3 Related Articles]
- declaratory judgment
- in law, a judicial judgment intended to fix or elucidate litigants' rights that were previously uncertain or doubtful. A declaratory judgment is binding but is distinguished from other judgments or court opinions in that it lacks an executory process. It ...
- declaratory theory of recognition
- (from the article "international law") ...may buttress a claim to statehood even in circumstances where the conditions for statehood have been fulfilled imperfectly (e.g., Bosnia and Herzegovina in 1992). According to the "declaratory" theory of recognition, which is supported by international practice, the act of ...
- declension
- (from the article "Greek language") Not counting the vocative case, the Greek declension in the Mycenaean period still contained five cases: nominative, accusative, genitive, dative-locative, and instrumental. Between the Mycenaean period and the 8th century the instrumental ceased to exist as a distinct case, its ...
- declination
- in astronomy, the angular distance of a body north or south of the celestial equator. Declination and right ascension, an east-west coordinate, together define the position of an object in the sky. North declination is considered positive and south, negative. ... [4 Related Articles]
- declination axis
- (from the article "telescope") ...a telescope to be pointed at a celestial object for viewing.) In the equatorial mounting, the polar axis of the telescope is constructed parallel to the Earth's axis. The polar axis supports the declination axis of the instrument. Declination is ...
- decline phase
- (from the article "food preservation") ...stationary phase, the rate of bacterial cell growth is equal to the rate of bacterial cell death. When the rate of cell death becomes greater than the rate of cell growth, the population enters the decline phase.
- decoction mashing
- (from the article "beer") ...malt, however, benefits from a period of mashing at lower temperatures to permit the breakdown of proteins and glucans. This requires some form of temperature programming, which is achieved by decoction mashing. After grist is mashed in at 35 to ...
- decoder
- (from the article "telecommunication") ...(FEC). In this method information bits are protected against errors by the transmitting of extra redundant bits, so that if errors occur during transmission the redundant bits can be used by the decoder to determine where the errors have occurred ...
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