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Double-headed (other)
Double-headed may refer to: * Double-headed eagle, common symbol in heraldry and vexillology * Double-heading, the use of two independently operated locomotives at the front of a train * Dual-head Multi-monitor, also called multi-display and multi-head, is the use of multiple physical display devices, such as monitors, televisions, and projectors, in order to increase the area available for computer programs running on a single computer ..., the use of two display devices with a computer * Polycephaly, the state of having two heads * Double-headed playing card See also * Doubleheader (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double-headed Eagle
In heraldry and vexillology, the double-headed eagle (or double-eagle) is a charge (heraldry), charge associated with the concept of Empire. Most modern uses of the symbol are directly or indirectly associated with its use by the late Byzantine Empire, originally a dynastic emblem of the Palaiologos dynasty, Palaiologoi. It was adopted during the Late Medieval to Early Modern period in the Holy Roman Empire on the one hand, and in Eastern Orthodox Church, Orthodox principalities (Kingdom of Serbia (medieval), Serbia and Tsardom of Russia, Russia) on the other, representing an heraldic augmentation, augmentation of the (single-headed) eagle (heraldry), eagle or ''Aquila (Roman), Aquila'' associated with the Roman Empire. In a few places, among them the Holy Roman Empire and Russia, the motif was further augmented to create the less prominent triple-headed eagle. The motif has predecessors in Bronze Age art, found in Illyria, Mycenaean Greece, and in the Ancient Near East, espec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double-heading
In railroad terminology, double heading indicates the use of two locomotives at the front of a train, each operated individually by its own crew. The practice of triple-heading involves the use of three locomotives. The practice of multi-heading involves the use of multiple locomotives and so on. Double heading is most common with steam locomotives, but is also practised with diesel locomotives. It is not strictly the same practice as two or more diesel or electric locomotives working ' in multiple' (or 'multiple-working'), where both (or all) locomotives are controlled by a single driver in the cab of the leading locomotive. Advantages Double heading is practised for a number of reasons: * In the UK it was usually to gain traction on steep inclines, twice the amount of driven wheels - twice the amount of grip. * The need for additional motive power when a single locomotive is unable to haul the train due to uphill grades, excessive train weight, or a combination of the two. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dual-head
Multi-monitor, also called multi-display and multi-head, is the use of multiple physical display devices, such as monitors, televisions, and projectors, in order to increase the area available for computer programs running on a single computer system. Research studies show that, depending on the type of work, multi-head may increase the productivity by 50–70%. Measurements of the Institute for Occupational Safety and Health of the German Social Accident Insurance showed that the quality and quantity of worker performance varies according to the screen setup and type of task. Overall, the results of physiological studies and the preferences of the test persons favour a dual-monitor rather than single-monitor setup. Physiologically limiting factors observed during work on dual monitors were minor and not generally significant. There is no evidence that office work with dual-monitor setups presents a possible hazard to workers. Implementation Multiple computers can be connec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polycephaly
Polycephaly is the condition of having more than one head. The term is derived from the Greek stems ''poly'' (Greek: "πολύ") meaning "many" and ''kephalē'' (Greek: "κεφαλή") meaning "head". A polycephalic organism may be thought of as one being with a supernumerary body part, or as two or more beings with a shared body. Two-headed animals (called bicephalic or dicephalic) and three-headed (tricephalic) animals are the only type of multi-headed creatures seen in the real world, and form by the same process as conjoined twins from monozygotic twin embryos. In humans, there are two forms of twinning that can lead to two heads being supported by a single torso. In dicephalus parapagus dipus, the two heads are side by side. In craniopagus parasiticus, the two heads are joined directly to each other, but only one head has a functional torso. Survival to adulthood is rare, but does occur in some forms of dicephalus parapagus dipus. There are many occurrences of multi-h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double-headed Playing Card
The following is a glossary of terms used in card games. Besides the terms listed here, there are thousands of common and uncommon slang terms. Terms in this glossary should not be game-specific (e.g. specific to Bridge, Hearts, Poker or Rummy), but apply to a wide range of card games. For glossaries that relate primarily to one game or family of similar games, see Game-specific glossaries. A ; Ace # The card with one pip in a pack of cards. Usually the highest card of a suit, ranking immediately above the King. May also occupy the lowest rank. # Commonly refers to the Deuce or Two in German-suited packs which don't have real Aces. Often the highest card of a suit. ; Acorns : One of the four suits in a German-suited pack of cards. Symbol: ; active # A card that is in play i.e. not sleeping. # See active player. ; active player # A player who receives cards in the current deal (i.e. is not sitting out because there are more players than the game is design ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
