Abstract: A positional stop device includes a base body, a lever, a driving element, and a retaining member. The lever is rotatablely arranged on the base body, a first end of the lever couples to the driving element, and a second end of the lever couples to the retaining member. The driving element is partially exposed out of the base body. The retaining member is moveablely received in the base body. When the slider of a pneumatic rodless cylinder slides along a first direction, the driving element is driven by the slider to move along a second direction and be fully received in the base body. The lever is driven by the driving element to rotate around the base body. The retaining member is driven by the lever to move along a third direction and to be partially exposed out of the base body to stops the slider from sliding.

Abstract: A method and a device, of identity verification are disclosed. The method includes: receiving by a server, an identity verification request seat, from a terminal, where the identity verification request contains a specified user identifier; based on a user relationship chain of the specified user identifier, obtaining a verified user information set which includes user's information on the user relationship chain; providing the verified user information set to the terminal, in order to subsequently receive returned selected user's information; determining whether the received selected users information from the terminal matches the user's information on the user relationship chain; if the selected user's information received matches the user's information on the user relationship chain, confirming that the identity verification being successful.

Abstract: Various embodiments provide methods, apparatus, and systems for generating P2P network schemes. In an exemplary method for generating a P2P network scheme, predicted data can be obtained and used to determine a bandwidth managing scheme of the predicted data, based on a corresponding relationship between predicted data and bandwidth managing schemes. The bandwidth managing scheme can be executed and be used to automatically determine schemes, e.g., for pushing resources into the P2P network.