Abstract: A system for identifying digital content related to a portion of a block of text receives, automatically or via input by a user, an indication of one or more words included in the block of text. The system searches a database of digital content based on the one or more words and retrieves from the database one or more digital content items or identifiers of digital content items that are related to the one or more words. The system provides the retrieved digital content items or identifiers to the user, and receives a selection of one or more of the provided items or identifiers from the user. The system associates for display or replay the one or more selected digital content items with the one or more words in the block of text. Other embodiments of the system are also disclosed.

Abstract: A hardware and software facility for classifying media content units using keywords from a structured vocabulary. Metadata associated with each media content unit is segmented into a series of descriptive phrases. The descriptive phrases are mapped to keywords in a structured vocabulary, and the identified keywords associated with the media content units. Descriptive phrases that are not found in the structured vocabulary are tracked as candidate phrases for later addition to the structured vocabulary. A keyword index to the media content units may be constructed. The index is used to identify specific media content units that are responsive to search queries in a reliable and accurate fashion.

Abstract: A hardware and software facility for classifying media content units using keywords from a structured vocabulary. Metadata associated with each media content unit is segmented into a series of descriptive phrases. The descriptive phrases are mapped to keywords in a structured vocabulary, and the identified keywords associated with the media content units. Descriptive phrases that are not found in the structured vocabulary are tracked as candidate phrases for later addition to the structured vocabulary. A keyword index to the media content units may be constructed. The index is used to identify specific media content units that are responsive to search queries in a reliable and accurate fashion.

Abstract: The subject invention provides a compound of the formula 1, wherein X, Q, n, R1, R2, R3, R4, R5 R6, R7, R8, R9, and R10 are as defined. Compounds of formula I have activity as opioid receptor antagonists. The subject invention furthermore provides for pharmaceutical compositions and therapeutic methods comprising compounds of formula I.

Abstract: The subject invention provides a compound of the formula I, wherein X, Q, n, R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 are as defined. Compounds of formula I have activity as opioid receptor antagonists. The subject invention furthermore provides for pharmaceutical compositions and therapeutic methods comprising compounds of formula I.