Abstract: A material collection system includes a planar structure, at least one actuator, and a plurality of pull cables. The planar structure includes a plurality of interconnected geometric panels having a plurality of holes therethrough, and each interconnection between two geometric panels defines a foldable coupling. The plurality of pull cables pass through the holes such that a first end of each pull cable is coupled with at least one geometric panel and a second end of each pull cable is coupled with the at least one actuator. The planar structure is operable between a first stable geometric state and a second stable geometric state. An actuation to pull each of the plurality of pull cables transitions the planar structure between the first stable geometric state and the second stable geometric state.

Abstract: A material collection system includes a planar structure, at least one actuator, and a plurality of pull cables. The planar structure includes a plurality of interconnected geometric panels having a plurality of holes therethrough, and each interconnection between two geometric panels defines a foldable coupling. The plurality of pull cables pass through the holes such that a first end of each pull cable is coupled with at least one geometric panel and a second end of each pull cable is coupled with the at least one actuator. The planar structure is operable between a first stable geometric state and a second stable geometric state. An actuation to pull each of the plurality of pull cables transitions the planar structure between the first stable geometric state and the second stable geometric state.

Abstract: A page display method and system. The method comprises: obtaining stored metadata, wherein the metadata represents data describing commodity information (101); generating template data for page display according to the metadata (102); and according to the template data selecting a corresponding template rendering page, and then displaying the page to users (103). According to the method and system, the template data is generated through the stored metadata, a corresponding template rendering page is selected according to the template data and then displayed to users. In this way, there exists no dependence on systems having commodity information and no trouble is caused by the usability problem in these systems. Therefore, the page can be quickly displayed to users, improving user experience greatly and realizing diversified requirements of different people.