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  2. Digital subtraction angiography - Wikipedia

    en.wikipedia.org/wiki/Digital_subtraction...

    Digital subtraction angiography (DSA) is a fluoroscopy technique used in interventional radiology to clearly visualize blood vessels in a bony or dense soft tissue environment. Images are produced using contrast medium by subtracting a "pre-contrast image" or mask from subsequent images, once the contrast medium has been introduced into a ...

  3. Domain-specific architecture - Wikipedia

    en.wikipedia.org/wiki/Domain-specific_architecture

    A domain-specific architecture (DSA) is a programmable computer architecture specifically tailored to operate very efficiently within the confines of a given application domain. The term is often used in contrast to general-purpose architectures, such as CPUs , that are designed to operate on any computer program .

  4. Directory System Agent - Wikipedia

    en.wikipedia.org/wiki/Directory_System_Agent

    In Microsoft's Active Directory the DSA is a collection of servers and daemon processes that run on Windows Server systems that provide various means for clients to access the Active Directory data store. [4] [5] Clients connect to an Active Directory DSA using various communications protocols:

  5. Digital Signature Algorithm - Wikipedia

    en.wikipedia.org/wiki/Digital_Signature_Algorithm

    The Digital Signature Algorithm (DSA) is a public-key cryptosystem and Federal Information Processing Standard for digital signatures, based on the mathematical concept of modular exponentiation and the discrete logarithm problem. In a public-key cryptosystem, a pair of private and public keys are created: data encrypted with either key can ...

  6. Algorithms + Data Structures = Programs - Wikipedia

    en.wikipedia.org/wiki/Algorithms_+_Data...

    N. Wirth, Algorithms and Data Structures (1985 edition, updated for Oberon in August 2004. Pdf at ETH Zurich) (archive.org link) Wirth, Niklaus (2004) [updated 2014]. Algorithms and Data Structures (PDF). Oberon version with corrections and authorized modifications. Institute for Nuclear Research, Moscow: Fyodor Tkachov.

  7. Dynamic site acceleration - Wikipedia

    en.wikipedia.org/wiki/Dynamic_site_acceleration

    Dynamic Site Acceleration (DSA) is a group of technologies which make the delivery of dynamic websites more efficient. [1] Manufacturers of application delivery controllers and content delivery networks (CDNs) use a host of techniques to accelerate dynamic sites, including:

  8. Dynamic spectrum management - Wikipedia

    en.wikipedia.org/wiki/Dynamic_spectrum_management

    Dynamic spectrum management (DSM), also referred to as dynamic spectrum access (DSA), is a set of techniques based on theoretical concepts in network information theory and game theory that is being researched and developed to improve the performance of a communication network as a whole.

  9. Elliptic Curve Digital Signature Algorithm - Wikipedia

    en.wikipedia.org/wiki/Elliptic_Curve_Digital...

    On March 29, 2011, two researchers published an IACR paper [9] demonstrating that it is possible to retrieve a TLS private key of a server using OpenSSL that authenticates with Elliptic Curves DSA over a binary field via a timing attack. [10] The vulnerability was fixed in OpenSSL 1.0.0e. [11]