Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2390718407', 'doi': None, 'title': 'Conditions for Two Types of Ellipsoids of Parallelotope Being Ball', 'display_name': 'Conditions for Two Types of Ellipsoids of Parallelotope Being Ball', 'publication_year': 2009, 'publication_date': '2009-01-01', 'ids': {'openalex': 'https://openalex.org/W2390718407', 'mag': '2390718407'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'http://en.cnki.com.cn/Article_en/CJFDTOTAL-SDXZ200901005.htm', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S2764654876', 'display_name': 'Journal of Shanghai University (English Edition)', 'issn_l': '1007-6417', 'issn': ['1007-6417', '1863-236X'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310319965', 'host_organization_name': 'Springer Nature', 'host_organization_lineage': ['https://openalex.org/P4310319965'], 'host_organization_lineage_names': ['Springer Nature'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': [], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5040036391', 'display_name': 'Gangsong Leng', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I113940042', 'display_name': 'Shanghai University', 'ror': 'https://ror.org/006teas31', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I113940042']}], 'countries': ['CN'], 'is_corresponding': True, 'raw_author_name': 'Leng Gang-song', 'raw_affiliation_strings': ['College of Sciences, Shanghai University, Shanghai 200444, China.'], 'affiliations': [{'raw_affiliation_string': 'College of Sciences, Shanghai University, Shanghai 200444, China.', 'institution_ids': ['https://openalex.org/I113940042']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': ['https://openalex.org/A5040036391'], 'corresponding_institution_ids': ['https://openalex.org/I113940042'], 'apc_list': None, 'apc_paid': None, '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': {'min': 0, 'max': 64}, 'biblio': {'volume': None, 'issue': None, 'first_page': None, 'last_page': None}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T13267', 'display_name': 'Geometric Modeling and Nanomaterial Applications in Engineering', 'score': 0.9748, 'subfield': {'id': 'https://openalex.org/subfields/2204', 'display_name': 'Biomedical Engineering'}, 'field': {'id': 'https://openalex.org/fields/22', 'display_name': 'Engineering'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T13267', 'display_name': 'Geometric Modeling and Nanomaterial Applications in Engineering', 'score': 0.9748, 'subfield': {'id': 'https://openalex.org/subfields/2204', 'display_name': 'Biomedical 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/ellipsoid', 'display_name': 'Ellipsoid', 'score': 0.98236495}, {'id': 'https://openalex.org/keywords/ball', 'display_name': 'Ball (mathematics)', 'score': 0.8012832}, {'id': 'https://openalex.org/keywords/geometric-modeling', 'display_name': 'Geometric Modeling', 'score': 0.483216}], 'concepts': [{'id': 'https://openalex.org/C57489055', 'wikidata': 'https://www.wikidata.org/wiki/Q190046', 'display_name': 'Ellipsoid', 'level': 2, 'score': 0.98236495}, {'id': 'https://openalex.org/C122041747', 'wikidata': 'https://www.wikidata.org/wiki/Q838611', 'display_name': 'Ball (mathematics)', 'level': 2, 'score': 0.8012832}, {'id': 'https://openalex.org/C112680207', 'wikidata': 'https://www.wikidata.org/wiki/Q714886', 'display_name': 'Regular polygon', 'level': 2, 'score': 0.58125454}, {'id': 'https://openalex.org/C33923547', 'wikidata': 'https://www.wikidata.org/wiki/Q395', 'display_name': 'Mathematics', 'level': 0, 'score': 0.45980114}, {'id': 'https://openalex.org/C2524010', 'wikidata': 'https://www.wikidata.org/wiki/Q8087', 'display_name': 'Geometry', 'level': 1, 'score': 0.3221475}, {'id': 'https://openalex.org/C127313418', 'wikidata': 'https://www.wikidata.org/wiki/Q1069', 'display_name': 'Geology', 'level': 0, 'score': 0.17008367}, {'id': 'https://openalex.org/C13280743', 'wikidata': 'https://www.wikidata.org/wiki/Q131089', 'display_name': 'Geodesy', 'level': 1, 'score': 0.06995046}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'http://en.cnki.com.cn/Article_en/CJFDTOTAL-SDXZ200901005.htm', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S2764654876', 'display_name': 'Journal of Shanghai University (English Edition)', 'issn_l': '1007-6417', 'issn': ['1007-6417', '1863-236X'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310319965', 'host_organization_name': 'Springer Nature', 'host_organization_lineage': ['https://openalex.org/P4310319965'], 'host_organization_lineage_names': ['Springer Nature'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W84874975', 'https://openalex.org/W2923524881', 'https://openalex.org/W2764580310', 'https://openalex.org/W2477834868', 'https://openalex.org/W2273992590', 'https://openalex.org/W2171970890', 'https://openalex.org/W2131728408', 'https://openalex.org/W2130957847', 'https://openalex.org/W2104287619', 'https://openalex.org/W2103303770', 'https://openalex.org/W2065015447', 'https://openalex.org/W2034124193', 'https://openalex.org/W2028140316', 'https://openalex.org/W202725382', 'https://openalex.org/W2025181364', 'https://openalex.org/W2011766430', 'https://openalex.org/W2005485125', 'https://openalex.org/W1986006778', 'https://openalex.org/W1666737175', 'https://openalex.org/W1572547729'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2390718407', 'counts_by_year': [], 'updated_date': '2024-09-18T22:22:51.938949', 'created_date': '2016-06-24'}