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Ech József
ECH may refer to: * Echuca Airport, in Victoria, Australia * Echuca railway station, Australia * Embedded contact homology * Emergency Command Hologram, a character in the television series ''Star Trek: Voyager'' * Enhanced Combat Helmet (other) * Epichlorohydrin * Enterprise Cultural Heritage * Encrypted Client Hello Server Name Indication (SNI) is an extension to the Transport Layer Security (TLS) computer networking protocol by which a client indicates which hostname it is attempting to connect to at the start of the handshaking process. The extension allow .... A TLS protocol extension {{Disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echuca Airport
Echuca Airport is located south of Echuca, Victoria (state), Victoria, Australia. See also * List of airports in Victoria, Australia References Airports in Victoria (state) Echuca-Moama {{VictoriaAU-struct-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echuca Railway Station
Echuca railway station is located on the Deniliquin line in Victoria, Australia. It serves the town of the same name, and opened on 19 September 1864.Echuca Vicsig It is the northern-most operating passenger on the Deniliquin line, and is the terminus for Echuca line services. It also serves as the terminus of the freight-only T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embedded Contact Homology
In mathematics, Floer homology is a tool for studying symplectic geometry and low-dimensional topology. Floer homology is an invariant that arises as an infinite-dimensional analogue of finite-dimensional Morse homology. Andreas Floer introduced the first version of Floer homology, now called symplectic Floer homology, in his 1988 proof of the Arnold conjecture in symplectic geometry. Floer also developed a closely related theory for Lagrangian submanifolds of a symplectic manifold. A third construction, also due to Floer, associates homology groups to closed three-dimensional manifolds using the Yang–Mills functional. These constructions and their descendants play a fundamental role in current investigations into the topology of symplectic and contact manifolds as well as (smooth) three- and four-dimensional manifolds. Floer homology is typically defined by associating to the object of interest an infinite-dimensional manifold and a real valued function on it. In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emergency Command Hologram
The Doctor, an Emergency Medical Hologram (EMH), is a fictional character portrayed by actor Robert Picardo in the television series '' Star Trek: Voyager'', first aired on UPN between 1995 and 2001. He is an artificial intelligence manifest as a holographic projection, and designed to be a short-term adjunct to medical staff in emergency situations. However, when the '' USS Voyager'' is stranded on the far side of the galaxy without medical personnel, he is forced to act as the starship's permanent chief medical officer. In an example of the ''Star Trek'' franchise's exploration of artificial intelligence, a rudimentary algorithm becomes a major character in the show. Casting In a 2020 interview, Picardo said his agent told him that he was selected from 900 actors who auditioned for the role. He added that he first learned what a hologram was from being selected for the role. "I was confused, I didn't know what it meant for him to be a hologram or a computer program. I didn' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enhanced Combat Helmet (other)
Enhanced Combat Helmet may refer to: * Enhanced Combat Helmet (Australia) - the standard combat helmet of the Australian Defence Force * Enhanced Combat Helmet (United States) - a plastic/composite combat helmet of the United States military {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epichlorohydrin
Epichlorohydrin (abbreviated ECH) is an organochlorine compound and an epoxide. Despite its name, it is not a halohydrin. It is a colorless liquid with a pungent, garlic-like odor, moderately soluble in water, but miscibility, miscible with most polar molecule, polar Organic compound, organic solvents. It is a chiral molecule generally existing as a racemic mixture of right-handed and left-handed enantiomers. Epichlorohydrin is a highly reactive electrophile, electrophilic compound and is used in the production of glycerol, plastics, Epoxy resin, epoxy glues and resins, epoxy diluents and elastomers. Production Epichlorohydrin is traditionally manufactured from allyl chloride in two steps, beginning with the addition of hypochlorous acid, which affords a mixture of two structural isomer, isomeric alcohols: : In the second step, this mixture is treated with base to give the epoxide: : In this way, more than 800,000 tons (1997) of epichlorohydrin are produced annually. Glycer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Server Name Indication
Server Name Indication (SNI) is an extension to the Transport Layer Security (TLS) computer networking protocol by which a client indicates which hostname it is attempting to connect to at the start of the handshaking process. The extension allows a server to present one of multiple possible certificates on the same IP address and TCP port number and hence allows multiple secure (HTTPS) websites (or any other service over TLS) to be served by the same IP address without requiring all those sites to use the same certificate. It is the conceptual equivalent to HTTP/1.1 name-based virtual hosting, but for HTTPS. This also allows a proxy to forward client traffic to the right server during TLS/SSL handshake. The desired hostname is not encrypted in the original SNI extension, so an eavesdropper can see which site is being requested. The SNI extension was specified in 2003 in Background of the problem Prior to SNI, when making a TLS connection, the client had no way to specify which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
