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Reverse Salient
A reverse salient refers to a component of a technological system that, due to its insufficient development, prevents the system in its entirety from achieving its development goals. The term was coined by Thomas P. Hughes,Hughes, T. P. (1983). Networks of power: Electrification in western society, 1880-1930. USA: The Johns Hopkins University Press. in his work ''Networks of power: Electrification in western society, 1880-1930''. Technological systems and their evolution Technological systems may refer to a hierarchically nested structure of technological parts, whereby the system is seen as a composition of interdependent sub-systems that are themselves systems comprising further sub-systems. Tushman, M.L. & Murmann, J.P. 1998, "Dominant Designs, Technology Cycles, and Organizational Outcomes", Research in Organizational Behavior, vol. 20, pp. 231-266. In this manned the holistic system and its properties are seen to be synthesized through the sub-systems that constitute them. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas P
Thomas may refer to: People * List of people with given name Thomas * Thomas (name) * Thomas (surname) * Saint Thomas (other) * Thomas Aquinas (1225–1274) Italian Dominican friar, philosopher, and Doctor of the Church * Thomas the Apostle * Thomas (bishop of the East Angles) (fl. 640s–650s), medieval Bishop of the East Angles * Thomas (Archdeacon of Barnstaple) (fl. 1203), Archdeacon of Barnstaple * Thomas, Count of Perche (1195–1217), Count of Perche * Thomas (bishop of Finland) (1248), first known Bishop of Finland * Thomas, Earl of Mar (1330–1377), 14th-century Earl, Aberdeen, Scotland Geography Places in the United States * Thomas, Illinois * Thomas, Indiana * Thomas, Oklahoma * Thomas, Oregon * Thomas, South Dakota * Thomas, Virginia * Thomas, Washington * Thomas, West Virginia * Thomas County (other) * Thomas Township (other) Elsewhere * Thomas Glacier (Greenland) Arts, entertainment, and media * ''Thomas'' (Burton novel) 1969 novel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nathan Rosenberg
Nathan Rosenberg (November 22, 1927 – August 24, 2015) was an American economist specializing in the history of technology. Biography Rosenberg earned his PhD from the University of Wisconsin in 1955, and taught at Indiana University (1955–1957), the University of Pennsylvania (1957–1961), Purdue University (1961–1964), Harvard University (1967–1969), the University of Wisconsin (1969–1974) and Stanford University (1974–), where he was the Fairleigh S. Dickinson, Jr. Professor Emeritus of Public Policy in the Department of Economics. In 1989 he was visiting Pitt Professor of American History and Institutions at the University of Cambridge. Rosenberg's contribution to understanding technological change was acknowledged by Douglass C. North in his Nobel Prize lecture entitled "Economic Performance through Time". In 1996 he was awarded the Leonardo da Vinci Medal, the highest award of the Society for the History of Technology. In 1986's ''How the West Grew Rich'', Rose ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carcinogen
A carcinogen is any substance, radionuclide, or radiation that promotes carcinogenesis (the formation of cancer). This may be due to the ability to damage the genome or to the disruption of cellular metabolic processes. Several radioactive substances are considered carcinogens, but their carcinogenic activity is attributed to the radiation, for example gamma rays and alpha particles, which they emit. Common examples of non-radioactive carcinogens are inhaled asbestos, certain dioxins, and tobacco smoke. Although the public generally associates carcinogenicity with synthetic chemicals, it is equally likely to arise from both natural and synthetic substances. Carcinogens are not necessarily immediately toxic; thus, their effect can be insidious. Carcinogens, as mentioned, are agents in the environment capable of contributing to cancer growth. Carcinogens can be categorized into two different types: activation-dependent and activation-independent, and each nature impacts their level ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobile Music
Mobile music is music which is downloaded or streamed to mobile phones and played by mobile phones. Although many phones play music as ringtones, true "music phones" generally allow users to stream music or download music files over the internet via a WiFi connection or 3G cell phone connection. Music phones are also able to import audio files from their PCs. The case of mobile music being stored within the memory of the mobile phone is the case similar to traditional business models in the music industry. It supports two variants: the user can either purchase the music for outright ownership or access entire libraries of music via a subscription model. In this case the music files are available as long as the subscription is active. Truetones While ringtones do not include artists voices, truetones, chaku-uta and chaku-uta full are recordings of artists' interpretation of music. Distributing them usually requires the agreement of record labels and other owners of artists' rights ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copyright
A copyright is a type of intellectual property that gives its owner the exclusive right to copy, distribute, adapt, display, and perform a creative work, usually for a limited time. The creative work may be in a literary, artistic, educational, or musical form. Copyright is intended to protect the original expression of an idea in the form of a creative work, but not the idea itself. A copyright is subject to limitations based on public interest considerations, such as the fair use doctrine in the United States. Some jurisdictions require "fixing" copyrighted works in a tangible form. It is often shared among multiple authors, each of whom holds a set of rights to use or license the work, and who are commonly referred to as rights holders. These rights frequently include reproduction, control over derivative works, distribution, public performance, and moral rights such as attribution. Copyrights can be granted by public law and are in that case considered "territorial righ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gyroscope
A gyroscope (from Ancient Greek γῦρος ''gŷros'', "round" and σκοπέω ''skopéō'', "to look") is a device used for measuring or maintaining orientation and angular velocity. It is a spinning wheel or disc in which the axis of rotation (spin axis) is free to assume any orientation by itself. When rotating, the orientation of this axis is unaffected by tilting or rotation of the mounting, according to the conservation of angular momentum. Gyroscopes based on other operating principles also exist, such as the microchip-packaged MEMS gyroscopes found in electronic devices (sometimes called gyrometers), solid-state ring lasers, fibre optic gyroscopes, and the extremely sensitive quantum gyroscope. Applications of gyroscopes include inertial navigation systems, such as in the Hubble Space Telescope, or inside the steel hull of a submerged submarine. Due to their precision, gyroscopes are also used in gyrotheodolites to maintain direction in tunnel mining. Gyroscopes ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donald Angus MacKenzie
Donald Angus MacKenzie (born 3 May 1950) is a Professor of Sociology at the University of Edinburgh, Scotland. His work constitutes a crucial contribution to the field of science and technology studies. He has also developed research in the field of social studies of finance. He has undertaken widely cited work on the history of statistics, eugenics, nuclear weapons, computing and finance, among other things. In August 2006, MacKenzie was awarded the Chancellor's Award from Prince Philip, Duke of Edinburgh and Chancellor of the University of Edinburgh, for his contributions to the field of science and technology studies. He is also the winner of the 1993 Robert K. Merton Award of the American Sociological Association and the 2005 John Desmond Bernal Prize of the Society for Social Studies of Science among many others. Books * * * * * * * * * References External linksDonald MacKenzie's faculty homepageat the University of EdinburghDonald MacKenzie's contributions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballistic Missile
A ballistic missile is a type of missile that uses projectile motion to deliver warheads on a target. These weapons are guided only during relatively brief periods—most of the flight is unpowered. Short-range ballistic missiles stay within the Earth's atmosphere, while intercontinental ballistic missiles (ICBMs) are launched on a sub-orbital flight. These weapons are in a distinct category from cruise missiles, which are aerodynamically guided in powered flight. Unlike cruise missiles, which are restricted to the atmosphere, it is advantageous for ballistic missiles to avoid the denser parts of the atmosphere and they may travel above the atmosphere into outer space. History The earliest form of ballistic missile dates from the 13th century with its use derived from the history of rockets. In the 14th century, the Ming Chinese navy used an early form of a ballistic missile weapon called the Huolongchushui in naval battles against enemy ships.Needham, Volume 5, Part 7, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrical Generator
In electricity generation, a generator is a device that converts motive power (mechanical energy) or fuel-based power (chemical energy) into electric power for use in an external circuit. Sources of mechanical energy include steam turbines, gas turbines, water turbines, internal combustion engines, wind turbines and even hand cranks. The first electromagnetic generator, the Faraday disk, was invented in 1831 by British scientist Michael Faraday. Generators provide nearly all of the power for electric power grids. In addition to electromechanical designs, photovoltaic and fuel cell powered generators utilize solar power and hydrogen-based fuels, respectively, to generate electrical output. The reverse conversion of electrical energy into mechanical energy is done by an electric motor, and motors and generators have many similarities. Many motors can be mechanically driven to generate electricity; frequently they make acceptable manual generators. Terminology Electromagnetic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bottleneck
Bottleneck literally refers to the narrowed portion (neck) of a bottle A bottle is a narrow-necked container made of an impermeable material (such as glass, plastic or aluminium) in various shapes and sizes that stores and transports liquids. Its mouth, at the bottling line, can be sealed with an internal stopp ... near its opening, which limit the volumetric flow rate, rate of outflow, and may describe any object of a similar shape. The literal neck of a bottle was originally used to play what is now known as slide guitar. Metaphorically, the term may also be used as an analogy for any of the following implications of rate limitation or function restriction: Computing * Bottleneck (network), in communication networks using max-min fairness * Bottleneck (software), a software component that severely affects application performance * Internet bottleneck, when high usage slows the performance on the Internet at a particular point * Von Neumann architecture#Von Neumann bottl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Industrial Engineering And Management
The ''Journal of Industrial Engineering and Management'' is a biannual peer-reviewed open access scientific journal that covers research on all aspects of industrial engineering and management. It was established in 2008. It is a member of the Open Access Scholarly Publishers Association. Abstracting and indexing The journal is abstracted and indexed in: * Ei Compendex * Latindex * Scopus * Emerging Sources Citation Index The Emerging Sources Citation Index (ESCI) is a citation index produced since 2015 by Thomson Reuters, and now by Clarivate. According to the publisher, the index includes "peer-reviewed publications of regional importance and in emerging scientifi ... References External links * Business and management journals Biannual journals Academic journals established in 2008 English-language journals Open access journals Industrial engineering journals {{business-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
