{"id":"https://openalex.org/W4236127940","doi":"https://doi.org/10.1007/978-3-540-24715-9_1","title":"Introduction","display_name":"Introduction","publication_year":2004,"publication_date":"2004-01-01","ids":{"openalex":"https://openalex.org/W4236127940","doi":"https://doi.org/10.1007/978-3-540-24715-9_1"},"language":"en","primary_location":{"id":"doi:10.1007/978-3-540-24715-9_1","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-540-24715-9_1","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"},"type":"book-chapter","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5067275429","display_name":"Hiroshi Yasuda","orcid":"https://orcid.org/0000-0003-3081-6230"},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Hiroshi Yasuda","raw_affiliation_strings":["Director CCR: Center for Collaborative Research, The University of Tokyo President cIDf: Content ID Forum, Japan"],"affiliations":[{"raw_affiliation_string":"Director CCR: Center for Collaborative Research, The University of Tokyo President cIDf: Content ID Forum, Japan","institution_ids":["https://openalex.org/I74801974"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5067275429"],"corresponding_institution_ids":["https://openalex.org/I74801974"],"apc_list":{"value":5000,"currency":"EUR","value_usd":5392},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.41552647,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"2"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T13999","display_name":"Digital Rights Management and Security","score":0.6730999946594238,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T13999","display_name":"Digital Rights Management and Security","score":0.6730999946594238,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/metadata","display_name":"Metadata","score":0.8520786762237549},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.752687931060791},{"id":"https://openalex.org/keywords/broadcasting","display_name":"Broadcasting (networking)","score":0.5661370754241943},{"id":"https://openalex.org/keywords/business-model","display_name":"Business model","score":0.5530831217765808},{"id":"https://openalex.org/keywords/broadband","display_name":"Broadband","score":0.5368006825447083},{"id":"https://openalex.org/keywords/the-internet","display_name":"The Internet","score":0.5137521028518677},{"id":"https://openalex.org/keywords/digital-broadcasting","display_name":"Digital broadcasting","score":0.459564745426178},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.4538191854953766},{"id":"https://openalex.org/keywords/content-management","display_name":"Content management","score":0.45240503549575806},{"id":"https://openalex.org/keywords/content-distribution","display_name":"Content distribution","score":0.44626352190971375},{"id":"https://openalex.org/keywords/entertainment","display_name":"Entertainment","score":0.4201483428478241},{"id":"https://openalex.org/keywords/multimedia","display_name":"Multimedia","score":0.37875908613204956},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.32834184169769287},{"id":"https://openalex.org/keywords/digital-television","display_name":"Digital television","score":0.195826917886734},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.14053812623023987},{"id":"https://openalex.org/keywords/business","display_name":"Business","score":0.0962773859500885}],"concepts":[{"id":"https://openalex.org/C93518851","wikidata":"https://www.wikidata.org/wiki/Q180160","display_name":"Metadata","level":2,"score":0.8520786762237549},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.752687931060791},{"id":"https://openalex.org/C110157686","wikidata":"https://www.wikidata.org/wiki/Q922122","display_name":"Broadcasting (networking)","level":2,"score":0.5661370754241943},{"id":"https://openalex.org/C4216890","wikidata":"https://www.wikidata.org/wiki/Q815823","display_name":"Business model","level":2,"score":0.5530831217765808},{"id":"https://openalex.org/C509933004","wikidata":"https://www.wikidata.org/wiki/Q194163","display_name":"Broadband","level":2,"score":0.5368006825447083},{"id":"https://openalex.org/C110875604","wikidata":"https://www.wikidata.org/wiki/Q75","display_name":"The Internet","level":2,"score":0.5137521028518677},{"id":"https://openalex.org/C41062264","wikidata":"https://www.wikidata.org/wiki/Q851691","display_name":"Digital broadcasting","level":3,"score":0.459564745426178},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.4538191854953766},{"id":"https://openalex.org/C33039251","wikidata":"https://www.wikidata.org/wiki/Q173373","display_name":"Content management","level":2,"score":0.45240503549575806},{"id":"https://openalex.org/C3018752578","wikidata":"https://www.wikidata.org/wiki/Q269415","display_name":"Content distribution","level":2,"score":0.44626352190971375},{"id":"https://openalex.org/C512170562","wikidata":"https://www.wikidata.org/wiki/Q173799","display_name":"Entertainment","level":2,"score":0.4201483428478241},{"id":"https://openalex.org/C49774154","wikidata":"https://www.wikidata.org/wiki/Q131765","display_name":"Multimedia","level":1,"score":0.37875908613204956},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.32834184169769287},{"id":"https://openalex.org/C520681616","wikidata":"https://www.wikidata.org/wiki/Q202255","display_name":"Digital television","level":2,"score":0.195826917886734},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.14053812623023987},{"id":"https://openalex.org/C144133560","wikidata":"https://www.wikidata.org/wiki/Q4830453","display_name":"Business","level":0,"score":0.0962773859500885},{"id":"https://openalex.org/C153349607","wikidata":"https://www.wikidata.org/wiki/Q36649","display_name":"Visual arts","level":1,"score":0.0},{"id":"https://openalex.org/C162853370","wikidata":"https://www.wikidata.org/wiki/Q39809","display_name":"Marketing","level":1,"score":0.0},{"id":"https://openalex.org/C142362112","wikidata":"https://www.wikidata.org/wiki/Q735","display_name":"Art","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/978-3-540-24715-9_1","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-540-24715-9_1","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Industry, innovation and infrastructure","id":"https://metadata.un.org/sdg/9","score":0.41999998688697815}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2523648043","https://openalex.org/W2324728354","https://openalex.org/W1971436470","https://openalex.org/W1495897892","https://openalex.org/W2350038440","https://openalex.org/W1984326511","https://openalex.org/W2312361048","https://openalex.org/W2595434366","https://openalex.org/W2100103708","https://openalex.org/W4236127940"],"abstract_inverted_index":null,"counts_by_year":[{"year":2023,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2022-05-12T00:00:00"}