|
Ast
AST, Ast, or ast may refer to: Science and technology * Attention schema theory, of consciousness or subjective awareness Computing * Abstract syntax tree, a finite, labeled, directed tree used in computer science * Anamorphic stretch transform, a physics-inspired signal transform * Andrew S. Tanenbaum (born 1944), American-Dutch computer scientist, sometimes identified as "ast" * Asynchronous system trap, a mechanism used in several computer operating systems * Application security testing, testing the operation and security of a software application * Application support team, a team of application support analysts supporting IT services delivered to users within an organisation, enabling the required operational processes needed for the business to be successful. Medicine * Aspartate transaminase, an enzyme associated with liver parenchymal cells * Antibiotic sensitivity testing or antibiotic susceptibility testing, the measurement of the susceptibility of bacteria to an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abwehr
The (German language, German for ''resistance'' or ''defence'', though the word usually means ''counterintelligence'' in a military context) ) was the German military intelligence , military-intelligence service for the ''Reichswehr'' and the ''Wehrmacht'' from 1920 to 1944. Although the 1919 Treaty of Versailles prohibited the Weimar Republic from establishing an intelligence organization of their own, they formed an espionage group in 1920 within the Ministry of the Reichswehr , Ministry of Defence, calling it the ''Abwehr''. The initial purpose of the ''Abwehr'' was defense against foreign espionage: an organizational role that later evolved considerably. Under General Kurt von Schleicher (prominent in running the ''Reichswehr'' from 1926 onwards) the individual military services' intelligence units were combined and, in 1929, centralized under Schleicher's ''Ministeramt'' within the Ministry of the Reichswehr , Ministry of Defence, forming the foundation for the more commonl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AST Research
AST Research, Inc., later doing business as AST Computer, was an American personal computer manufacturer. It was founded in 1980 in Irvine, California, by Albert Wong, Safi Qureshey, and Thomas Yuen, as an initialism of their first names. Wong left the company nine years later, followed by Yuen in 1992, with Qureshey remaining until AST was acquired by Samsung Electronics in 1997. The company began by making a circuit board for the IBM PC that boosted its memory storage. AST went public in 1984 and would be a manufacturer of boards and add-on expansion cards. By the late 1980s, it had evolved into a major personal computer manufacturer with its line of Intel i386 based PC clones, and it was the first vendor to announce an i486 PC. In 1990, AST released an NEC PC-9801 clone in the Japanese market, becoming the first American PC vendor to market an NEC clone. AST had established itself as one of the known "alternative" brands of PCs in the United States while globally it had ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antibiotic Sensitivity Testing
Antibiotic sensitivity testing or antibiotic susceptibility testing is the measurement of the susceptibility of bacteria to antibiotics. It is used because bacteria may have resistance to some antibiotics. Sensitivity testing results can allow a clinician to change the choice of antibiotics from empiric therapy, which is when an antibiotic is selected based on clinical suspicion about the site of an infection and common causative bacteria, to directed therapy, in which the choice of antibiotic is based on knowledge of the organism and its sensitivities. Sensitivity testing usually occurs in a medical laboratory, and uses culture methods that expose bacteria to antibiotics, or genetic methods that test to see if bacteria have genes that confer resistance. Culture methods often involve measuring the diameter of areas without bacterial growth, called zones of inhibition, around paper discs containing antibiotics on agar culture dishes that have been evenly inoculated with bacter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anamorphic Stretch Transform
An anamorphic stretch transform (AST) also referred to as warped stretch transform is a physics-inspired signal transform that emerged from time stretch dispersive Fourier transform. The transform can be applied to analog temporal signals such as communication signals, or to digital spatial data such as images. The transform reshapes the data in such a way that its output has properties conducive for data compression and analytics. The reshaping consists of warped stretching in the Fourier domain. The name "Anamorphic" is used because of the metaphoric analogy between the warped stretch operation and warping of images in anamorphosis and surrealist artworks. Operation principle An anamorphic stretch transform (AST) is a mathematical transformation in which analog or digital data is stretched and warped in a context-aware manner, such that it results in nonuniform Fourier domain sampling. The transformation is defined as: AST \left \ = \int_^\infty where \tilde_(\omega) is the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aston Railway Station
Aston railway station serves the districts of Aston and Nechells in Birmingham, England. The passenger entrance is on Lichfield Road and accessible via the staircase or lifts to take you to the platform which is raised. The station is on the Cross-City Line and the Chase Line. It is one of two local stations for Aston Villa Football Club (the other being Witton) and near to the Aston Expressway and to Gravelly Hill Interchange (Spaghetti Junction). History The route of the Grand Junction Railway, sweeping in a wide arc from Perry Barr through Aston to its terminus at Vauxhall, was dictated by the refusal of James Watt the younger, the tenant of Aston Hall, to allow the railway to encroach upon Aston Park in the grounds of the hall as planned in the Grand Junction Railway Act 1833 ( 3 & 4 Will. 4. c. xxxiv). The line was originally intended to enter Birmingham through a mile-long tunnel under the high ground on which the park is situated. In clause IV of the Grand Junction R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alternating Series Test
In mathematical analysis, the alternating series test proves that an alternating series is convergent when its terms decrease monotonically in absolute value and approach zero in the limit. The test was devised by Gottfried Leibniz and is sometimes known as Leibniz's test, Leibniz's rule, or the Leibniz criterion. The test is only sufficient, not necessary, so some convergent alternating series may fail the first part of the test. For a generalization, see Dirichlet's test. History Leibniz discussed the criterion in his unpublished ''De quadratura arithmetica'' of 1676 and shared his result with Jakob Hermann in June 1705 and with Johann Bernoulli in October, 1713. It was only formally published in 1993. Formal statement Alternating series test A series of the form \sum_^\infty (-1)^ a_n = a_0-a_1 + a_2 - a_3 + \cdots where either all ''a''''n'' are positive or all ''a''''n'' are negative, is called an alternating series. The alternating series test guarantees that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abstract Syntax Tree
An abstract syntax tree (AST) is a data structure used in computer science to represent the structure of a program or code snippet. It is a tree representation of the abstract syntactic structure of text (often source code) written in a formal language. Each node of the tree denotes a construct occurring in the text. It is sometimes called just a syntax tree. The syntax is "abstract" in the sense that it does not represent every detail appearing in the real syntax, but rather just the structural or content-related details. For instance, grouping parentheses are implicit in the tree structure, so these do not have to be represented as separate nodes. Likewise, a syntactic construct like an if-condition-then statement may be denoted by means of a single node with three branches. This distinguishes abstract syntax trees from concrete syntax trees, traditionally designated parse trees. Parse trees are typically built by a parser during the source code translation and compiling pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Application Security
Application security (short AppSec) includes all tasks that introduce a secure software development life cycle to development teams. Its final goal is to improve security practices and, through that, to find, fix and preferably prevent security issues within applications. It encompasses the whole application life cycle from requirements analysis, design, implementation, verification as well as maintenance. Web application security is a branch of information security that deals specifically with the security of websites, web applications, and web services. At a high level, web application security draws on the principles of application security but applies them specifically to the internet and web systems. The application security also concentrates on mobile apps and their security which includes iOS and Android Applications Web Application Security Tools are specialized tools for working with HTTP traffic, e.g., Web application firewalls. Approaches Different approaches will find ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic School Of Theology
Atlantic School of Theology (AST) is a Canadian public ecumenical university that provides graduate level theological Theology is the study of religious belief from a religious perspective, with a focus on the nature of divinity. It is taught as an academic discipline, typically in universities and seminaries. It occupies itself with the unique content of an ... education and undertakes research to assist students to prepare for Christian ministries and other forms of public leadership. It is located in Halifax Urban Area, Halifax, Nova Scotia, Canada, and its enrolment is approximately 160 degree and non-degree students. Persons of all religious traditions, or none, are welcome to study at AST. Mission Atlantic School of Theology is a public ecumenical university that serves Christ's mission by shaping effective and faithful ordained and lay leaders and understanding among communities of faith. History Atlantic School of Theology was founded in 1971 and formally incorpor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Office Of Commercial Space Transportation
The Office of Commercial Space Transportation (generally referred to as FAA/AST or simply AST) is the branch of the United States Federal Aviation Administration (FAA) that approves any commercial rocket launch operations — that is, any launches that are not classified as model, amateur, or "by and for the government" — in the case of a U.S. launch operator and/or a launch from the U.S. History With the signing of Executive Order 12465 on February 25, 1984, President Reagan designated the Department of Transportation to be the lead agency for commercial expendable launch vehicles. This selection occurred following an interagency competition between the Departments of Commerce and Transportation to be the lead agency. At the time, Congress and the industry supported the Department of Commerce for the lead role, and draft legislation named the Department of Commerce as the agency responsible for the new industry. However, it was the Administration's call, and, moreover ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astoria Regional Airport
Astoria Regional Airport is a joint civil-military public airport in Warrenton, three miles southwest of Astoria, in Clatsop County, Oregon. The airport is owned by the Port of Astoria and is the home of Coast Guard Air Station Astoria. The airport has no airline flights. Flights to Portland International Airport were most recently provided by SeaPort Airlines from March 2008 until Spring of 2010. Until 1974-75 Astoria had flights on West Coast Airlines and its successors. Federal Aviation Administration records say the airport had 1,851 passenger boardings (enplanements) in calendar year 2008, 1,531 in 2009 and 3,482 in 2010. The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a ''general aviation'' facility based on enplanements in 2008 (the ''commercial service'' category requires 2,500 per year) but it would be categorized as ''commercial service - non-primary'' based in enplanements in 2010. Facilities Astoria Regional Airport cove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Augstsprieguma Tīkls
Augstsprieguma Tīkls AS (AST) is an independent electricity transmission state system operator in Latvia. It operates power systems with voltages of 110 kV and above, which is leased from Latvenergo. It is also the main shareholder of Conexus Baltic Grid, a unified natural gas transmission and storage operator in Latvia. History On 15 October 1939 the Ķegums Hydroelectric Power Station, Ķegums power plant and the first substation in Riga start operation. This day is considered as the beginning of AST. AST was a part of Latvenergo. On 2 January 2012, it was unbundled from Latvenergo and the Ministry of Finance of Latvia became the sole shareholder of AST. In December 2017, AST bought from Uniper Ruhrgas International and Itera Latvija 18.31% and 16.05% stakes in Conexus Baltic Grid, a natural gas transmission system operator in Latvia, for €57.394 million. Operations AST operates Latvian power systems with voltages of 110 kV and above, which is leased fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
