Abstract: A system, processes, and a computer-readable storage medium are provided method includes receiving a search query including one or more of a textual phrase, a document, or data including metadata from a user. For example, a processor may execute a theme-generating machine learning algorithm to generate a theme of the search query. Profiles of other users are identified as similar to a profile of the user may be located. A search history of each of the located other users may be located in the collected search history. Content in the searchable content that corresponds to the generated theme of the search query and according to a result of the evaluation of the located search history of each of the other users may be obtained. The obtained content may be scored based on a scoring algorithm and output a set of scored search results to the input/output device.

Abstract: A lens retracting structure includes a housing, an image-forming lens set moveably supported on two parallel guide rods inside the housing, and a driving mechanism for moving the image-forming lens set along the parallel guide rods between a first position and a second position by means of the engagement of a threaded coupling member of the image-forming lens set with a threaded shaft which is rotatably driven by a motor of the driving mechanism.

Abstract: A lens retracting structure includes a housing, an image-forming lens set moveably supported on two parallel guide rods inside the housing, and a driving mechanism for moving the image-forming lens set along the parallel guide rods between a first position and a second position by means of the engagement of a threaded coupling member of the image-forming lens set with a threaded shaft which is rotatably driven by a motor of the driving mechanism.