{"id":"https://openalex.org/W2744001021","doi":null,"title":"Improvements in SIM Time Network and SIM Time Scale Performance | NIST","display_name":"Improvements in SIM Time Network and SIM Time Scale Performance | NIST","publication_year":2014,"publication_date":"2014-10-10","ids":{"openalex":"https://openalex.org/W2744001021","mag":"2744001021"},"language":"en","primary_location":{"id":"mag:2744001021","doi":null,"is_oa":false,"landing_page_url":"https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=916197","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"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/A5023205844","display_name":"Michael A. Lombardi","orcid":"https://orcid.org/0000-0001-8027-034X","observed_orcids":["https://orcid.org/0000-0001-8027-034X"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Michael A. Lombardi","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5009780735","display_name":"Jos\u00e9 Mauricio L\u00f3pez-Romero","orcid":"https://orcid.org/0000-0003-3435-9241","observed_orcids":["https://orcid.org/0000-0003-3435-9241"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"J. Mauricio L\u00f3pez-Romero","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0003-3435-9241","affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5059616376","display_name":"N\u00e9lida D\u00edaz-Mu\u00f1oz","orcid":"https://orcid.org/0000-0003-4574-8664","observed_orcids":["https://orcid.org/0000-0003-4574-8664"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Nelida Diaz-Munoz","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0003-4574-8664","affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5008136372","display_name":"Eduardo de Carlos-Lopez","orcid":"https://orcid.org/0000-0002-1049-4302","observed_orcids":["https://orcid.org/0000-0002-1049-4302"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"E. de Carlos-L\u00f3pez","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-1049-4302","affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5038750918","display_name":"Marina Gertsvolf","orcid":"https://orcid.org/0000-0002-1188-2104","observed_orcids":["https://orcid.org/0000-0002-1188-2104"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Marina Gertsvolf","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-1188-2104","affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5102778035","display_name":"Ricardo de Carvalho","orcid":"https://orcid.org/0000-0002-8323-2952","observed_orcids":["https://orcid.org/0000-0002-8323-2952"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Ricardo de Carvalho","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-8323-2952","affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12004","display_name":"Advanced Frequency and Time Standards","score":0.9463000297546387,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12004","display_name":"Advanced Frequency and Time Standards","score":0.9463000297546387,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12216","display_name":"Network Time Synchronization Technologies","score":0.03970000147819519,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10655","display_name":"GNSS positioning and interference","score":0.0020000000949949026,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/clock-synchronization","display_name":"clock synchronization","score":0.5429999828338623},{"id":"https://openalex.org/keywords/time-transfer","display_name":"time transfer","score":0.46000000834465027},{"id":"https://openalex.org/keywords/network-time-synchronization","display_name":"network time synchronization","score":0.3269999921321869}],"concepts":[{"id":"https://openalex.org/C111219384","wikidata":"https://www.wikidata.org/wiki/Q6954384","display_name":"NIST","level":2,"score":0.8479642868041992},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5619394183158875},{"id":"https://openalex.org/C2778755073","wikidata":"https://www.wikidata.org/wiki/Q10858537","display_name":"Scale (ratio)","level":2,"score":0.546369194984436},{"id":"https://openalex.org/C28490314","wikidata":"https://www.wikidata.org/wiki/Q189436","display_name":"Speech recognition","level":1,"score":0.14893069863319397},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.11292669177055359},{"id":"https://openalex.org/C58640448","wikidata":"https://www.wikidata.org/wiki/Q42515","display_name":"Cartography","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:2744001021","doi":null,"is_oa":false,"landing_page_url":"https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=916197","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2712473848","https://openalex.org/W2891379465","https://openalex.org/W2729332890","https://openalex.org/W2752554418","https://openalex.org/W2672775613","https://openalex.org/W2890770505","https://openalex.org/W2729850181","https://openalex.org/W2645351002","https://openalex.org/W2908868903","https://openalex.org/W2743852625"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-09-22T06:50:58.402377","created_date":"2017-08-17T00:00:00"}
