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  2. Gas check - Wikipedia

    en.wikipedia.org/wiki/Gas_check

    Cast bullets as cast (left), with gas check (center) and lubricated (right). A gas check is a gasket type component of firearms ammunition. Gas checks are used when non-jacketed bullets are used in high pressure cartridges. The use of a gas check inhibits the buildup of lead in the barrel and improves accuracy. [1]

  3. 10 of the Most Expensive Items Ever Sold on eBay

    www.aol.com/10-most-expensive-items-ever...

    1. Gigayacht. Sold for: $168 million Roman Abramovich, a Russian billionaire, must have been staring at an empty dock for a while now, because the 168 milly he shelled out for a 400-foot yacht is ...

  4. List of most expensive cars sold at auction - Wikipedia

    en.wikipedia.org/wiki/List_of_most_expensive...

    This is a list of the most expensive cars sold in public auto auctions through the traditional bidding process.. On May 5, 2022, in a secret auction at the brand's museum in Germany, Mercedes-Benz sold one of just two 1955 300 SLR Uhlenhaut coupes from its extensive collection of historical automobiles—which dates back to the earliest days of the car in the late 19th century.

  5. First-price sealed-bid auction - Wikipedia

    en.wikipedia.org/wiki/First-price_sealed-bid_auction

    A first-price sealed-bid auction (FPSBA) is a common type of auction. It is also known as blind auction. [1] In this type of auction, all bidders simultaneously submit sealed bids so that no bidder knows the bid of any other participant. The highest bidder pays the price that was submitted. [2]: p2 [3]

  6. Gas-checks in British RML heavy guns - Wikipedia

    en.wikipedia.org/wiki/Gas-checks_in_British_RML...

    As a result, the Mk I gas-check was superseded by the Mk II gas-check by 1881. Fig 2 shows a 9-inch studded common shell with a Mk II gas-check. The Mk II gas-check was virtually identical to the Mk I, the main difference being that the collar had projections that fitted into the grooves on loading and resulted in faster gas sealing on firing. [8]

  7. Dutch auction - Wikipedia

    en.wikipedia.org/wiki/Dutch_auction

    The speed of the clock used in the Dutch auction has a significant effect on final prices and the auctioneer's revenue. [14] A fast Dutch clock has been found to yield significantly lower bids and seller revenue when benchmarked against a first-price sealed-bid auction. On the contrary, a sufficiently slow Dutch clock is found to be more ...

  8. Rotating gas-check - Wikipedia

    en.wikipedia.org/wiki/Rotating_gas-check

    A rotating gas-check (more commonly known as an automatic gas-check) was a copper plate that automatically attached itself to a specially-designed studless projectile of rifled muzzle-loading ("RML") artillery, sealing the escape of gas between the projectile and the barrel and imparting axial rotation to the projectile. [1]

  9. Generalized first-price auction - Wikipedia

    en.wikipedia.org/.../Generalized_first-price_auction

    The generalized first-price auction (GFP) is a non-truthful auction mechanism for sponsored search (a.k.a. position auctions). [1] In sponsored search n bidders compete for the assignment of k slots. Each slot has an associate click-through rate, the click-through rates are decreasing from top to bottom. The GFP mechanism asks each bidder for a ...