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Blocking I O
Blocking may refer to: Science, technology, and mathematics Computing and telecommunications *Blacklist (computing) *Blocking (computing), holding up a task until an event occurs * Blocking (radio), interference by an off-frequency signal *Blocking probability, for calls in a telecommunications system *Head-of-line blocking, in some network switching fabrics *Internet blocking; see Block (Internet) Psychology * Thought blocking, a type of thought disorder * Blocking effect, in psychology *Mental block, a type of suppression or repression Other uses in science *Blocking (linguistics), where the existence of a competing form blocks the application of a morphological process *Blocking (statistics), in the design of experiments, the arranging of experimental units in groups (blocks) which are similar to one another * Atmospheric blocking, a phenomenon in meteorology of large scale stationary pressure cells *Blocking, in the western blot technique, a process to prevent unwanted bind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blacklist (computing)
In computing, a blacklist, disallowlist, blocklist, or denylist is a basic access control mechanism that allows through all elements (email addresses, users, passwords, URLs, IP addresses, domain names, file hashes, etc.), except those explicitly mentioned. Those items on the list are denied access. The opposite is a whitelist, allowlist, or passlist, in which only items on the list are let through whatever gate is being used. A greylist contains items that are temporarily blocked (or temporarily allowed) until an additional step is performed. Blacklists can be applied at various points in a security architecture, such as a host, web proxy, DNS servers, email server, firewall, directory servers or application authentication gateways. The type of element blocked is influenced by the access control location. DNS servers may be well-suited to block domain names, for example, but not URLs. A firewall is well-suited for blocking IP addresses, but less so for blocking maliciou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Blot
The western blot (sometimes called the protein immunoblot), or western blotting, is a widely used analytical technique in molecular biology and immunogenetics to detect specific proteins in a sample of tissue homogenate or extract. Besides detecting the proteins, this technique is also utilized to visualize, distinguish, and quantify the different proteins in a complicated protein combination. Western blot technique uses three elements to achieve its task of separating a specific protein from a complex: separation by size, transfer of protein to a solid support, and marking target protein using a primary and secondary antibody to visualize. A synthetic or animal-derived antibody (known as the primary antibody) is created that recognizes and binds to a specific target protein. The electrophoresis membrane is washed in a solution containing the primary antibody, before excess antibody is washed off. A secondary antibody is added which recognizes and binds to the primary antibod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barrier Troops
Barrier troops, blocking units, or anti-retreat forces are military units that are located in the rear or on the front line (behind the main forces) to maintain military discipline, prevent the flight of servicemen from the battlefield, capture spies, saboteurs and deserters, and return troops who flee from the battlefield or lag behind their units. Barrier troops differ from military police, as barrier troops exert their effect through physical presence near specific allied units, as a preventative measure against retreat and other actions, whereas military police apprehend and control those who have already done so, typically in a wider area. Confederate States Army During the American Civil War, some Confederates were reported to have forced their African American slaves to fire upon Union soldiers while holding them at gunpoint. According to John Parker, a slave who was forced by the Confederates to fight Union soldiers at the First Battle of Bull Run, "Our masters tried all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blocking (transport)
In public transport Public transport (also known as public transit, mass transit, or simply transit) are forms of transport available to the general public. It typically uses a fixed schedule, route and charges a fixed fare. There is no rigid definition of whic ..., blocking is the practice of dividing the parts of a scheduled route among vehicles and drivers. It follows the process of dividing the route into trips. In blocking, these trips are pieced together into blocks that are relatively contiguous in space and time. The goal of blocking is to optimize the schedule such that: * Drivers can start and end their shift in the same place. * Off-route travel costs are minimized. * Layover (schedule recovery) time is minimized, while allowing drivers adequate time to depart the next trip origin on-time. * Vehicles are not changing over (interlining) too frequently. Interlining is a practice that assists in optimizing the number of vehicles required to deliver the service. Whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blocking (textile Arts)
In knitting, crochet and other handmade textile arts, blocking is a final stage of handmade textile production that adjusts the shape and size of the finished piece. Not all pieces need blocking; however, blocking is standard for lace work and is not uncommon in sweaters, socks, and other solid projects. Through heat and moisture, blocking sets the stitches and standardizes the final dimensions, and may enhance the drape. Hand manufacture places natural stresses on fabrics that may result in deviations from its intended shape and size. Blocking is only effective on natural fibres but a technique called ''killing'' may be used on synthetic fibres to achieve an effect similar to blocking. The degree of malleability is determined by the type of yarn used, with wool providing the most flexibility. For projects that are produced in sections or piecework, blocking is normally done prior to final assembly, and may be repeated after final construction. Blocking methods Blocking can b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blocking (animation)
Blocking is an animation technique in which key poses are created to establish timing and placement of characters and props in a given scene or shot. This technique is most commonly used in 3D computer animation, where it is sometimes referred to as ''Stepped animation''. Blocking is often the first step in the pose-to-pose style of animating, as opposed to the straight-ahead style of animation (though it sometimes plays a role in straight-ahead as well). Blocking poses are not necessarily exclusively keyframes. Blocked-in poses may also include important in-betweens, extremes, and breakdowns necessary to establishing the flow and timing of a particular shot. In 3D, the animation curves of a blocked shot are often created using "stepped" or "square" tangencies, which provides no interpolation between animation poses. This allows the animator to see the poses of the animation without any strange and/or unintentional automatic interpolation. While this is sometimes problematic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blocking (stage)
In theatre, blocking is the precise staging of actors to facilitate the performance of a Play (theatre), play, ballet, film or opera. Historically, the expectations of staging/blocking have changed substantially over time in Western theater. Prior to the movements toward "realism" that occurred in the 19th century, most staging used a "tableau" approach, in which a stage picture was established whenever characters entered or left the stage, ensuring that leading performers were always shown to their best advantage. In more recent times, while nothing has changed about showing leading performers to their best advantage, there have been changing cultural expectations that have made blocking/staging more complicated. There are also artistic reasons why blocking can be crucial. Through careful use of positioning on the stage, a director or performer can establish or change the significance of a scene. Different artistic principles can inform blocking, including minimalism and natur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blocking (martial Arts)
In martial arts, blocking is the act of stopping or deflecting an opponent's attack for the purpose of preventing injurious contact with the body. A block usually consists of placing a limb across the line of the attack. Examples in specific arts Styles and types of blocking, as well as terminology, vary widely among the various martial arts. In Japanese martial arts such as Karate, these techniques are referred to as ''uke waza''. Examples include ''age uke'' (rising block) and ''shuto uke'' (knife hand guarding block). In Korean martial arts such as taekwondo, these techniques are referred to as (막기), with some examples being (rising block) and (knifehand guarding block). Some martial arts, such as Capoeira, reject blocking techniques completely as they consider them too inefficient. In Capoeira, they use evasion instead of blocking. Types of blocks Inside blocks An inside block deflects a Strike (attack), strike away from the defender and away from the attacker. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blocking (American Football)
In American football, blocking or interference (or running interference) involves legal movements in which one player uses his body to obstruct another player's path. The purpose of blocking is to prevent defensive players from tackling the ball carrier, or to protect a quarterback who is attempting to pass, hand off or run the ball. Lineman (American football), Offensive linemen and Fullback (American football), fullbacks tend to do the most blocking, although wide receivers are often asked to help block on running plays and halfback (American football), halfbacks may be asked to help block on passing plays, while tight ends perform pass blocking and run blocking if they are not running routes to receive passes. Overall, blocking is a skill that virtually every football player may be required to do at some point, even defensive players in the event of a Turnover (gridiron football), turnover. Essentially, blocking is pushing, with certain restrictions; in blocking one may not gra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blocking (construction)
Blocking (dwang, nog, noggin, and nogging) is the use of short pieces of dimensional lumber in Framing (construction), wood framed construction to brace longer members or to provide grounds for fixings. Uses The primary purpose of blocking is to brace longer frame members to help resist buckling under vertical compression. The intervals for the blocks are specified in the building code or as calculated by a structural engineer. Blocking also resists the rotational movement, or twisting, of floor joists as they deflect under load. This may take the form of diagonal cross bracing, or ''herringbone'', bracing between floor joists. When solid blocks are used instead of diagonals it is called ''bridging'', ''block bridging'', ''solid bridging'' or ''solid strutting''. The illustration, right, shows solid blocking. Note how they are displaced alternately to allow nailing through their ends. Blocking may also provide spacers or attachment points between adjoining stud walls, for e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
