Abstract: Provided are a system and a method for impact testing and monitoring of a high-energy flexible net. The system includes a vertical impact testing unit, a slope impact testing unit, an impact simulation unit, and an impact monitoring unit. The vertical impact testing unit includes a vertically positioned gravity wall. The slope impact testing unit includes a wall slope positioned perpendicularly to a second side of the gravity wall. A first side of the gravity wall and a slope surface of the wall slope are securely provided with a flexible net, respectively. The impact simulation unit includes an impact assembly and a lifting assembly. The impact monitoring unit is configured to monitor a deformation result and an internal force change result of the flexible net.

Abstract: In one embodiment, a method includes receiving, from a client system associated with a first user of an online social network, a search query; parsing the search query to identify one or more n-grams; retrieving, for each identified n-gram, metadata from a mining-search-log database, where the metadata includes at least top N entity identifiers corresponding to entities associated with the identified n-gram and their respective click-through rates, and top K co-occurring n-grams for the identified n-gram; identifying a plurality of content objects matching the search query; ranking the content objects based on whether the content objects contain one or more of the top N entity identifiers or one or more of the top K co-occurring n-grams; and sending, to the client system, instructions for presenting one or more search results corresponding to the identified content objects in an order based on the ranking of the corresponding content objects.