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ETM
ETM may refer to: * ETM, a name given in Computer Science to the set of all Turing Machines which never reach an accepting state. * Encrypt-then-MAC * Energy and Technology Museum, in Vilnius, Lithuania * Entercom Audacy, Inc. is an American broadcasting company based in Philadelphia, Pennsylvania. Founded in 1968 as Entercom Communications Corp., it is the second largest radio company in the United States, owning over 220 radio stations across 47 media ..., an American broadcasting company * Estuarine turbidity maximum * European Travel Monitor * Ramon International Airport, in Israel See also * ETM+, an instrument on the Landsat 7 satellite {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ramon International Airport
Ramon Airport () , named after Ilan and Assaf Ramon and unofficially also known as Eilat-Ramon Airport, is an international airport located in the Timna Valley in southern Israel. Ramon Airport is the second busiest in Israel (after Ben Gurion Airport) and has replaced the former Eilat Airport and Ovda Airport for civilian traffic. It also serves as the primary diversion airport in Israel. The airport is located north of Eilat, next to Be'er Ora. Unlike the previous airport in Eilat, it has ample ramp space and a longer runway, which allows large aircraft to land and park. The airport was originally due to open in April 2017, but the opening was pushed back and the airport opened on January 21, 2019. The Irish low-cost carrier Ryanair inaugurated the first international flight service with a Boeing 737–800 from Poznan, Poland, on March 4, 2019. History Background Eilat Airport was established in 1949, when most of what would later be Eilat was empty. As the city develo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estuarine Turbidity Maximum
An estuarine turbidity maximum, or ETM, is the zone of highest turbidity resulting from turbulent resuspension of sediment and flocculation of particulate matter in an estuary. The turbulence is driven by tidal forces, waves, and density-drive currents that push a salt wedge upstream and beneath outflowing freshwater Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include non-salty mi ... discharge. References Turbidity maximum Rivers {{fluiddynamics-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Entercom
Audacy, Inc. is an American broadcasting company based in Philadelphia, Pennsylvania. Founded in 1968 as Entercom Communications Corp., it is the second largest radio company in the United States, owning over 220 radio stations across 47 media markets. In November 2017, the company merged with CBS Radio. The transaction was structured as an exchange offer whereby owners of CBS Corporation common shares (i.e., not the multiple-voting shares held by CBS Corp parent company National Amusements) at the time of the merger could elect to exchange their shares for Entercom shares corresponding to a 72% stake in the combined company. The company changed its name from Entercom to Audacy on March 30, 2021. On April 9, the ticker symbol on the New York Stock Exchange changed from "ETM" to "AUD". Audacy emerged from bankruptcy on September 30, 2024 and is now a privately-owned company. The new ownership group includes Soros Fund Management (which has controlling interest) as part of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encrypt-then-MAC
Authenticated Encryption (AE) is an encryption scheme which simultaneously assures the data confidentiality (also known as privacy: the encrypted message is impossible to understand without the knowledge of a secret key) and authenticity (in other words, it is unforgeable: the encrypted message includes an authentication tag that the sender can calculate only while possessing the secret key). Examples of encryption modes that provide AE are GCM, CCM. Many (but not all) AE schemes allow the message to contain "associated data" (AD) which is not made confidential, but its integrity is protected (i.e., it is readable, but tampering with it will be detected). A typical example is the header of a network packet that contains its destination address. To properly route the packet, all intermediate nodes in the message path need to know the destination, but for security reasons they cannot possess the secret key. Schemes that allow associated data provide authenticated encryption wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Travel Monitor
The World Travel Monitor (WTM) / European Travel Monitor (ETM) is a worldwide tourism information system detailing the foreign (outbound) travel behaviour practiced by a country’s respective resident population.World/European Travel Monitor, Tourism Market Research,Tourism Marketing&Masterplanning IPK International. Retrieved on 2012-05-01. Origins and objective The ''European Travel Monitor'' has been continuously surveying the most important data on outbound travel behaviour from all European countries since 1988. In 1995, the ''European Travel Monitor'' was expanded to the ''World Travel Monitor'' to cover all the important overseas markets (United States, Canada, Australia, |
Computer Science
Computer science is the study of computation, information, and automation. Computer science spans Theoretical computer science, theoretical disciplines (such as algorithms, theory of computation, and information theory) to Applied science, applied disciplines (including the design and implementation of Computer architecture, hardware and Software engineering, software). Algorithms and data structures are central to computer science. The theory of computation concerns abstract models of computation and general classes of computational problem, problems that can be solved using them. The fields of cryptography and computer security involve studying the means for secure communication and preventing security vulnerabilities. Computer graphics (computer science), Computer graphics and computational geometry address the generation of images. Programming language theory considers different ways to describe computational processes, and database theory concerns the management of re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Set Theory
Set theory is the branch of mathematical logic that studies Set (mathematics), sets, which can be informally described as collections of objects. Although objects of any kind can be collected into a set, set theory – as a branch of mathematics – is mostly concerned with those that are relevant to mathematics as a whole. The modern study of set theory was initiated by the German mathematicians Richard Dedekind and Georg Cantor in the 1870s. In particular, Georg Cantor is commonly considered the founder of set theory. The non-formalized systems investigated during this early stage go under the name of ''naive set theory''. After the discovery of Paradoxes of set theory, paradoxes within naive set theory (such as Russell's paradox, Cantor's paradox and the Burali-Forti paradox), various axiomatic systems were proposed in the early twentieth century, of which Zermelo–Fraenkel set theory (with or without the axiom of choice) is still the best-known and most studied. Set the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turing Machine
A Turing machine is a mathematical model of computation describing an abstract machine that manipulates symbols on a strip of tape according to a table of rules. Despite the model's simplicity, it is capable of implementing any computer algorithm. The machine operates on an infinite memory tape divided into discrete mathematics, discrete cells, each of which can hold a single symbol drawn from a finite set of symbols called the Alphabet (formal languages), alphabet of the machine. It has a "head" that, at any point in the machine's operation, is positioned over one of these cells, and a "state" selected from a finite set of states. At each step of its operation, the head reads the symbol in its cell. Then, based on the symbol and the machine's own present state, the machine writes a symbol into the same cell, and moves the head one step to the left or the right, or halts the computation. The choice of which replacement symbol to write, which direction to move the head, and whet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy And Technology Museum
Energy and Technology Museum (Lithuanian language, Lithuanian: ''Energetikos ir technikos muziejus'') is an institution dedicated to researching and presenting energy history, the industrial heritage of Lithuania, and the history of Vilnius. It is housed in a former Vilnius power plant. At 5,000 square meters, this museum is the largest museum of technology in Lithuania. The museum also features interactive rooms that are mainly aimed at children and feature interactive exhibits which illustrate different aspects of science. The first public power plant of Vilnius was opened in 1903. The Energy and Technology Museum still holds the old power plant equipment including steam turbines, generators, steam boilers, water pumps, pipelines and a control panel. References {{Authority control Museums in Vilnius Former power stations in Lithuania Buildings and structures in Vilnius ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
