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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 ...
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 .
Directed self-assembly (DSA) is a type of directed assembly which utilizes block co-polymer morphology to create lines, space and hole patterns, facilitating for a more accurate control of the feature shapes. Then it uses surface interactions as well as polymer thermodynamics to finalize the formation of the final pattern shapes. [1]
Five revisions to the initial specification have been released: FIPS 186–1 in 1998, [4] FIPS 186–2 in 2000, [5] FIPS 186–3 in 2009, [6] FIPS 186–4 in 2013, [3] and FIPS 186–5 in 2023. [7] Standard FIPS 186-5 forbids signing with DSA, while allowing verification of signatures generated prior to the implementation date of the standard ...
[3] The purpose of dynamic cache control is to increase the cache-hit ratio of a website, which is the rate between requests served by the cache and those served by the normal server. [4] Due to the dynamic nature of web 2.0 websites, it is difficult to use static web caching. The reason is that dynamic sites, per definition, have personalized ...
This implementation failure was used, for example, to extract the signing key used for the PlayStation 3 gaming-console. [3] Another way ECDSA signature may leak private keys is when is generated by a faulty random number generator. Such a failure in random number generation caused users of Android Bitcoin Wallet to lose their funds in August 2013.
Image credits: shassis One of the most popular things people DIY nowadays are decks. Kiehl warns that many homeowners might need a permit for that as well, whether you're doing it yourself or ...
DSA are a result of B cell and plasma cell activation and bind to HLA and/or non-HLA molecules on the endothelium [1] of the graft. They were first described in 1969 by Patel et al., who found that Transplant recipients who were positively tested for DSA using a complement-dependent cytotoxicity crossmatch assay had a higher risk of transplant ...