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Impulse
Impulse or Impulsive may refer to: Science * Impulse (physics), in mechanics, the change of momentum of an object; the integral of a force with respect to time * Impulse noise (other) * Specific impulse, the change in momentum per unit mass of propellant of a propulsion system * Impulse function, a mathematical function of an infinitely high amplitude and infinitesimal duration * Impulse response, a system's output when presented with the impulse function in Electrical Engineering * Impulse (psychology), a wish or urge, particularly a sudden one * Impulsion, a thrust of a horse Film and television * ''Impulse'' (1954 film), a thriller film starring Arthur Kennedy * ''Impulse'' (1974 film), a thriller film starring William Shatner * ''Impulse'' (1984 film), a science fiction film starring Meg Tilly and Tim Matheson * ''Impulse'' (1990 film), a thriller film starring Theresa Russell * ''Impulse'' (2008 film), a thriller film starring Angus Macfadyen * ''Impulse'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Specific Impulse
Specific impulse (usually abbreviated ) is a measure of how efficiently a reaction mass engine (a rocket using propellant or a jet engine using fuel) creates thrust. For engines whose reaction mass is only the fuel they carry, specific impulse is exactly proportional to the effective exhaust gas velocity. A propulsion system with a higher specific impulse uses the mass of the propellant more efficiently. In the case of a rocket, this means less propellant needed for a given delta-v, so that the vehicle attached to the engine can more efficiently gain altitude and velocity. In an atmospheric context, specific impulse can include the contribution to impulse provided by the mass of external air that is accelerated by the engine in some way, such as by an internal turbofan or heating by fuel combustion participation then thrust expansion or by external propeller. Jet engines breathe external air for both combustion and by-pass, and therefore have a much higher specific impulse than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impulse Response
In signal processing and control theory, the impulse response, or impulse response function (IRF), of a dynamic system is its output when presented with a brief input signal, called an impulse (). More generally, an impulse response is the reaction of any dynamic system in response to some external change. In both cases, the impulse response describes the reaction of the system as a function of time (or possibly as a function of some other independent variable that parameterizes the dynamic behavior of the system). In all these cases, the dynamic system and its impulse response may be actual physical objects, or may be mathematical systems of equations describing such objects. Since the impulse function contains all frequencies (see the Fourier transform of the Dirac delta function, showing infinite frequency bandwidth that the Dirac delta function has), the impulse response defines the response of a linear time-invariant system for all frequencies. Mathematical considerat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impulse (psychology)
In psychology, impulsivity (or impulsiveness) is a tendency to act on a whim, displaying behavior characterized by little or no forethought, reflection, or consideration of the consequences. Impulsive actions are typically "poorly conceived, prematurely expressed, unduly risky, or inappropriate to the situation that often result in undesirable consequences," which imperil long-term goals and strategies for success. Impulsivity can be classified as a multifactorial construct. A functional variety of impulsivity has also been suggested, which involves action without much forethought in appropriate situations that can and does result in desirable consequences. "When such actions have positive outcomes, they tend not to be seen as signs of impulsivity, but as indicators of boldness, quickness, spontaneity, courageousness, or unconventionality" Thus, the construct of impulsivity includes at least two independent components: first, acting without an appropriate amount of deliberatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impulse (physics)
In classical mechanics, impulse (symbolized by or Imp) is the integral of a force, , over the time interval, , for which it acts. Since force is a vector quantity, impulse is also a vector quantity. Impulse applied to an object produces an equivalent vector change in its linear momentum, also in the resultant direction. The SI unit of impulse is the newton second (N⋅s), and the dimensionally equivalent unit of momentum is the kilogram meter per second (kg⋅m/s). The corresponding English engineering unit is the pound-second (lbf⋅s), and in the British Gravitational System, the unit is the slug-foot per second (slug⋅ft/s). A resultant force causes acceleration and a change in the velocity of the body for as long as it acts. A resultant force applied over a longer time, therefore, produces a bigger change in linear momentum than the same force applied briefly: the change in momentum is equal to the product of the average force and duration. Conversely, a small forc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impulse (TV Series)
''Impulse'' is an American science fiction drama television series based on the 2013 Steven Gould novel '' Impulse''. The novel was one of a series following Gould's novel '' Jumper''. The series is a loose sequel to the 2008 film adaptation of the book. The series premiered on June 6, 2018, on YouTube Premium. It is executive produced by Lauren LeFranc, Doug Liman, David Bartis, and Gene Klein. LeFranc also acted as showrunner for the series. In July 2018, the series was renewed for a second season consisting of ten episodes, which premiered on October 16, 2019. The series was canceled in March 2020. Premise ''Impulse'' follows 16-year-old Henrietta "Henry" Coles who discovers she has the ability to teleport but has no control over her destination. The first time she realizes this, she is in a truck with her high school's basketball captain and star, Clay Boone, who tries to rape her. She has a seizure and teleports, in the course of which she inadvertently crushes much of his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impulse Function
In mathematics, the Dirac delta distribution ( distribution), also known as the unit impulse, is a generalized function or distribution over the real numbers, whose value is zero everywhere except at zero, and whose integral over the entire real line is equal to one. The current understanding of the unit impulse is as a linear functional that maps every continuous function (e.g., f(x)) to its value at zero of its domain (f(0)), or as the weak limit of a sequence of bump functions (e.g., \delta(x) = \lim_ \frace^), which are zero over most of the real line, with a tall spike at the origin. Bump functions are thus sometimes called "approximate" or "nascent" delta distributions. The delta function was introduced by physicist Paul Dirac as a tool for the normalization of state vectors. It also has uses in probability theory and signal processing. Its validity was disputed until Laurent Schwartz developed the theory of distributions where it is defined as a linear form acting o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impulse (German Magazine)
''Impulse'', formally ''Impulse: Das Unternehmer-Magazin'', is one of the business magazines published in Germany. The magazine is published on a monthly basis in Hamburg. History and profile ''Impulse'' was started in Cologne in 1980. The founder was Johannes Gross. The magazine was owned and published by Gruner + Jahr. In November 2012 the company announced that the magazine would be sold. In January 2013 the magazine was acquired by Impulse Medien GmbH of which majority stake is held by Nikolaus Förster. The publisher of the magazine, headquartered in Hamburg, is also Impulse Medien GmbH. The magazine is published monthly. On 1 February 2006 Klaus Schweinsberg was appointed editor-in-chief of the magazine, which targets decision makers, management consultants, investors and entrepreneurs. In 2009 Nikolaus Förster was named the editor-in-chief of the magazine. Before the unification of Germany ''Impulse'' had an East German edition, which was launched in 1990 and was publish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impulse (1990 Film)
''Impulse'' is a 1990 American neo-noir film directed by Sondra Locke, and starring Theresa Russell, Jeff Fahey, and George Dzundza. It follows a female police officer who works as an undercover prostitute in Los Angeles, who unwittingly finds herself at the center of a murder investigation. Plot Lottie Mason is an LAPD officer who works vice squad as a decoy prostitute. She is faced with a number of problems in her career, including being sexually harassed by her superior, Lieutenant Joe Morgan. As part of her work agreement, Lottie regularly visits with Dr. Gardner, a psychiatrist, where she confesses that she finds her sting operations thrilling, and that she often fantasizes about "losing control." Stan Harris, a detective in the department, begins to romance Lottie. She is initially evasive, but the two soon go on a date together and become intimate. After an intense sting operation ends with Lottie killing a drug dealer and two of his thugs, she heads home, rattled, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impulse! Records
Impulse! Records (occasionally styled as "¡mpulse! Records" and "¡!") is an American jazz record company and label established by Creed Taylor in 1960. John Coltrane was among Impulse!'s earliest signings. Thanks to consistent sales and positive critiques of his recordings, the label came to be known as "the house that Trane built". History Impulse!'s parent company, ABC-Paramount Records, was established in 1955 as the recording division of the American Broadcasting Company ( ABC). In the 1940s and 1950s, ABC benefitted from the U.S. government's antitrust actions against broadcasters and film studios who were forced to divest parts of their companies. In the early 1950s, ABC acquired the Blue Network of radio stations from NBC and later merged with the newly independent Paramount Theaters chain, formerly owned by Paramount Pictures. The new recording division was located at 1501 Broadway, above the Paramount Theatre in Times Square. Under the leadership of Leonard Goldenson ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impulse (2010 Film)
''Impulse'' is a 2010 suspense thriller short film written, produced, and directed by Scott Beck and Bryan Woods. The film is about the last day on Earth as deadly events unfold around a man (Chris Masterson) racing to his final and most significant act. The film made its debut on the closing night of the 2010 LA Shorts Fest. ''Impulse'' was picked up for distribution by Shorts International. Production The film was produced by Bluebox Limited Films and shot in Perry, Iowa in November 2009. Post-production was completed at Skywalker Sound and Company 3 Company 3 (CO3) is an American post-production company founded in 1997 by colorists Stefan Sonnenfeld and Mike Pethel and visual effects artist/supervisor Noel Castley-Wright. Rob Walston brought the team of artists together and funded Company 3 .... References External links * * 2010 films Films directed by Scott Beck and Bryan Woods Films shot in Iowa 2010 short films 2010 thriller films American thriller films 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impulse Drive
Impulse or Impulsive may refer to: Science * Impulse (physics), in mechanics, the change of momentum of an object; the integral of a force with respect to time * Impulse noise (other) * Specific impulse, the change in momentum per unit mass of propellant of a propulsion system * Impulse function, a mathematical function of an infinitely high amplitude and infinitesimal duration * Impulse response, a system's output when presented with the impulse function in Electrical Engineering * Impulse (psychology), a wish or urge, particularly a sudden one * Impulsion, a thrust of a horse Film and television * ''Impulse'' (1954 film), a thriller film starring Arthur Kennedy * ''Impulse'' (1974 film), a thriller film starring William Shatner * ''Impulse'' (1984 film), a science fiction film starring Meg Tilly and Tim Matheson * ''Impulse'' (1990 film), a thriller film starring Theresa Russell * ''Impulse'' (2008 film), a thriller film starring Angus Macfadyen * ''Impuls ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
