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Accumulator (energy)9
Accumulator may refer to: * Accumulator (bet), a parlay bet * Accumulator (computing), in a CPU, a processor register for storing intermediate results * Accumulator (computer vision), discrete cell structure to count votes, standard component of the Hough transform * Accumulator (cryptography), a value, determined by a set of values, that allows one to verify if any one of the original values is a member of the set * Accumulator (energy), an apparatus for storing energy or power ** Capacitor, in electrical engineering, also known by the obsolete term ''accumulator'' ** Electrochemical cell, a cell that stores electrical energy, typically used in rechargeable batteries ** Hydraulic accumulator, an energy storage device using hydraulic fluid under pressure ** Thermal accumulator, a device or system that provides thermal energy storage as from concentrated solar power and storage heaters or heat banks in buildings * Accumulator (structured product), a financial contract used by client ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accumulator (bet)
A parlay, accumulator (or acca), combo bet, or multi is a single bet that links together two or more individual wagers, usually seen in sports betting. Winning the parlay is dependent on all of those wagers winning together. If any of the bets in the parlay lose, the entire parlay loses. If any of the plays in the parlay ties, or "pushes", the parlay reverts to a lower number of wagers with the payout odds reducing accordingly. Parlay bets are high-risk, high-reward; linking the possibilities drastically reduces the chance of the bet paying off overall. The benefit of the parlay is that there are much higher pay-offs, although as usual, casinos and bookkeepers offering parlays often exploit the poor calculation of gamblers by not increasing the pay-out as much as the odds truly demand, with the effect of the house edge increasing in parlays. Although a variety of bets can be used to build a parlay bet, correlated parlays are usually not allowed by traditional bookmakers. Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accumulator (computing)
In a computer's central processing unit (CPU), the accumulator is a register in which intermediate arithmetic logic unit results are stored. Without a register like an accumulator, it would be necessary to write the result of each calculation (addition, multiplication, shift, etc.) to cache or main memory, perhaps only to be read right back again for use in the next operation. Accessing memory is slower than accessing a register like an accumulator because the technology used for the large main memory is slower (but cheaper) than that used for a register. Early electronic computer systems were often split into two groups, those with accumulators and those without. Modern computer systems often have multiple general-purpose registers that can operate as accumulators, and the term is no longer as common as it once was. However, to simplify their design, a number of special-purpose processors still use a single accumulator. Basic concept Mathematical operations often take ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hough Transform
The Hough transform () is a feature extraction technique used in image analysis, computer vision, pattern recognition, and digital image processing. The purpose of the technique is to find imperfect instances of objects within a certain class of shapes by a voting procedure. This voting procedure is carried out in a parameter space, from which object candidates are obtained as local maxima in a so-called accumulator space that is explicitly constructed by the algorithm for computing the Hough transform. Mathematically it is simply the Radon transform in the plane, known since at least 1917, but the Hough transform refers to its use in image analysis. The classical Hough transform was concerned with the identification of Line (mathematics), lines in the image, but later the Hough transform has been extended to identifying positions of arbitrary shapes, most commonly circles or ellipses. The Hough transform as it is universally used today was invented by Richard Duda and Peter E. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accumulator (cryptography)
In cryptography, an accumulator is a one way membership hash function. It allows users to certify that potential candidates are a member of a certain set without revealing the individual members of the set. This concept was formally introduced by Josh Benaloh and Michael de Mare in 1993. Formal definitions There are several formal definitions which have been proposed in the literature. This section lists them by proposer, in roughly chronological order. Benaloh and de Mare (1993) Benaloh and de Mare define a one-way hash function as a family of functions h_: X_\times Y_\to Z_ which satisfy the following three properties: # For all \ell\in\mathbb, x\in X_, y\in Y_, one can compute h_(x,y) in time \text(\ell, , x, , , y, ). (Here the "poly" symbol refers to an unspecified, but fixed, polynomial.) # No probabilistic polynomial-time algorithm will, for sufficiently large \ell, map the inputs \ell\in\mathbb, (x, y)\in X_\times Y_, y'\in Y_, find a value x'\in X_ such that h_(x, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accumulator (energy)
An accumulator is an energy storage device: a device which accepts energy, stores energy, and releases energy as needed. Some accumulators accept energy at a low rate (low power) over a long time interval and deliver the energy at a high rate (high power) over a short time interval. Some accumulators accept energy at a high rate over a short time interval and deliver the energy at a low rate over a longer time interval. Some accumulators typically accept and release energy at comparable rates. Various devices can store thermal energy, mechanical energy, and electrical energy. Energy is usually accepted and delivered in the same form. Some devices store a different form of energy than what they receive and deliver performing energy conversion on the way in and on the way out. Examples of accumulators include steam accumulators, mainsprings, flywheel energy storage, hydraulic accumulators, rechargeable batteries, capacitors, inductors, compensated pulsed alternators (compulsators ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capacitor
In electrical engineering, a capacitor is a device that stores electrical energy by accumulating electric charges on two closely spaced surfaces that are insulated from each other. The capacitor was originally known as the condenser, a term still encountered in a few compound names, such as the '' condenser microphone''. It is a passive electronic component with two terminals. The utility of a capacitor depends on its capacitance. While some capacitance exists between any two electrical conductors in proximity in a circuit, a capacitor is a component designed specifically to add capacitance to some part of the circuit. The physical form and construction of practical capacitors vary widely and many types of capacitor are in common use. Most capacitors contain at least two electrical conductors, often in the form of metallic plates or surfaces separated by a dielectric medium. A conductor may be a foil, thin film, sintered bead of metal, or an electrolyte. The nonconductin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrochemical Cell
An electrochemical cell is a device that either generates electrical energy from chemical reactions in a so called galvanic cell, galvanic or voltaic cell, or induces chemical reactions (electrolysis) by applying external electrical energy in an electrolytic cell. Both galvanic and electrolytic cells can be thought of as having two half-cells: consisting of separate Redox, oxidation and reduction reactions. When one or more electrochemical cells are connected in parallel or series they make a Battery (electricity), battery. Primary battery consists of single-use galvanic cells. Rechargeable batteries are built from #Secondary cells, secondary cells that use reversible reactions and can operate as galvanic cells (while providing energy) or electrolytic cells (while charging). Types of electrochemical cells Galvanic cell A galvanic cell (voltaic cell), named after Luigi Galvani (Alessandro Volta), is an electrochemical cell that generates electrical energy from spontaneous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Accumulator
A hydraulic accumulator is a pressure storage reservoir in which an Incompressible flow, incompressible hydraulic fluid is held under pressure that is applied by an external Prime mover (engine), source of mechanical energy. The external source can be an engine, a spring (device), spring, a raised weight, or a compressed gas.Although liquids are generally considered to be practically incompressible, gases may be compressed and this compressed gas is a convenient energy store. An accumulator enables a hydraulic system to cope with extremes of demand using a less powerful pump, to respond more quickly to a temporary demand, and to smooth out pulsations. It is a type of energy storage device. Compressed gas accumulators, also called hydro-pneumatic accumulators, are by far the most common type. Types of accumulator Towers The first accumulators for William Armstrong, 1st Baron Armstrong, William Armstrong's hydraulic dock machinery were simple raised water towers. Water was pumped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermal Energy Storage
Thermal energy storage (TES) is the storage of thermal energy for later reuse. Employing widely different technologies, it allows surplus thermal energy to be stored for hours, days, or months. Scale both of storage and use vary from small to large – from individual processes to district, town, or region. Usage examples are the balancing of energy demand between daytime and nighttime, storing summer heat for winter heating, or winter cold for summer cooling (Seasonal thermal energy storage). Storage media include water or ice-slush tanks, masses of native earth or bedrock accessed with heat exchangers by means of boreholes, deep aquifers contained between impermeable strata; shallow, lined pits filled with gravel and water and insulated at the top, as well as eutectic solutions and phase-change materials. Other sources of thermal energy for storage include heat or cold produced with heat pumps from off-peak, lower cost electric power, a practice called peak shaving; ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accumulator (structured Product)
Accumulators (aka: share forward accumulators) are financial structured products sold by an issuer (seller) to investors (the buyer) that ''require'' the buyers to buy shares of some underlying security at a predetermined strike price, settled periodically. This allows the investor to "accumulate" holdings in the underlying security over the term of the contract; this then constitutes a structured product. Sometimes known as "I kill you later" contracts, accumulators typically last for a year or less and terminate early ("knock-out") if the stock price goes above a threshold ("barrier"). The basic idea of an accumulator contract is that the buyer speculates a company will trade between a certain price range (the range between the strike and the knock out price) within the contract period, and the issuer bets that stock will fall below the strike price. Note that the buyer holds an obligation to buy the shares at the strike price and not the option to buy. Likewise, the issuer h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accumulator 1
''Accumulator 1'' () is a 1994 film directed by Jan Svěrák. The film won the Grand Prize at the 7th Yubari International Fantastic Film Festival in February 1996. It won the audience award at the Tromsø International Film Festival in 1996. Plot Young surveyor Olda ( Petr Forman) is courting a girl, Jitka (Tereza Pergnerová), but his colleague Slezák (Bolek Polívka) coaxes her into bed at his home. The morally exhausted Olda does not stop them, and watches TV all night, where he appeared that day in an absurd interview. He loses consciousness for three days and ends up in a hospital room with the ageing Mikulík (Jiří Kodet). That night, mysterious healer Fišarek (Zdeněk Svěrák) appears to help them, returning lost energy to Olda. Fišarek shows him how to take energy from trees, works of art and natural phenomena. When Mikulik dies, they examine his body and realize that he died watching TV, having lost all his energy. They meet his daughter Anna (Edita Brychta). Fiša ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
