{"id":"https://openalex.org/W4365815602","doi":"https://doi.org/10.1155/2023/3982443","title":"Time-Frequency Analysis of COVID-19 Shocks and Energy Commodities","display_name":"Time-Frequency Analysis of COVID-19 Shocks and Energy Commodities","publication_year":2023,"publication_date":"2023-04-15","ids":{"openalex":"https://openalex.org/W4365815602","doi":"https://doi.org/10.1155/2023/3982443"},"language":"en","primary_location":{"id":"doi:10.1155/2023/3982443","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2023/3982443","pdf_url":"https://downloads.hindawi.com/journals/complexity/2023/3982443.pdf","source":{"id":"https://openalex.org/S207319443","display_name":"Complexity","issn_l":"1076-2787","issn":["1076-2787","1099-0526"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Complexity","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://downloads.hindawi.com/journals/complexity/2023/3982443.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5045641636","display_name":"Samuel Kwaku Agyei","orcid":"https://orcid.org/0000-0002-8167-7747"},"institutions":[{"id":"https://openalex.org/I133771110","display_name":"University of Cape Coast","ror":"https://ror.org/0492nfe34","country_code":"GH","type":"education","lineage":["https://openalex.org/I133771110"]}],"countries":["GH"],"is_corresponding":false,"raw_author_name":"Samuel Kwaku Agyei","raw_affiliation_strings":["Department of Finance, School of Business, CC-191-7613, University of Cape Coast, Cape Coast, Ghana"],"affiliations":[{"raw_affiliation_string":"Department of Finance, School of Business, CC-191-7613, University of Cape Coast, Cape Coast, Ghana","institution_ids":["https://openalex.org/I133771110"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5001954485","display_name":"Ahmed Bossman","orcid":"https://orcid.org/0000-0001-9539-0889"},"institutions":[{"id":"https://openalex.org/I133771110","display_name":"University of Cape Coast","ror":"https://ror.org/0492nfe34","country_code":"GH","type":"education","lineage":["https://openalex.org/I133771110"]}],"countries":["GH"],"is_corresponding":true,"raw_author_name":"Ahmed Bossman","raw_affiliation_strings":["Department of Finance, School of Business, CC-191-7613, University of Cape Coast, Cape Coast, Ghana"],"affiliations":[{"raw_affiliation_string":"Department of Finance, School of Business, CC-191-7613, University of Cape Coast, Cape Coast, Ghana","institution_ids":["https://openalex.org/I133771110"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5063976907","display_name":"Joseph Kofi Obeng Benchie","orcid":"https://orcid.org/0000-0003-1654-9623"},"institutions":[{"id":"https://openalex.org/I133771110","display_name":"University of Cape Coast","ror":"https://ror.org/0492nfe34","country_code":"GH","type":"education","lineage":["https://openalex.org/I133771110"]}],"countries":["GH"],"is_corresponding":false,"raw_author_name":"Joseph Kofi Obeng Benchie","raw_affiliation_strings":["Department of Finance, School of Business, CC-191-7613, University of Cape Coast, Cape Coast, Ghana"],"affiliations":[{"raw_affiliation_string":"Department of Finance, School of Business, CC-191-7613, University of Cape Coast, Cape Coast, Ghana","institution_ids":["https://openalex.org/I133771110"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5044582825","display_name":"Oliver Asiamah","orcid":"https://orcid.org/0000-0003-1304-4873"},"institutions":[{"id":"https://openalex.org/I65806277","display_name":"Universit\u00e9 de Limoges","ror":"https://ror.org/02cp04407","country_code":"FR","type":"education","lineage":["https://openalex.org/I65806277"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Oliver Asiamah","raw_affiliation_strings":["Laboratoire d\u2019Analyse et de Prospective Economiques, Universite de Limoges, Limoges, France"],"affiliations":[{"raw_affiliation_string":"Laboratoire d\u2019Analyse et de Prospective Economiques, Universite de Limoges, Limoges, France","institution_ids":["https://openalex.org/I65806277"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5015581543","display_name":"Emmanuel Yaw Arhin","orcid":"https://orcid.org/0000-0003-3125-2510"},"institutions":[{"id":"https://openalex.org/I133771110","display_name":"University of Cape Coast","ror":"https://ror.org/0492nfe34","country_code":"GH","type":"education","lineage":["https://openalex.org/I133771110"]}],"countries":["GH"],"is_corresponding":false,"raw_author_name":"Emmanuel Yaw Arhin","raw_affiliation_strings":["Department of Accounting, School of Business, CC-191-7613, University of Cape Coast, Cape Coast, Ghana"],"affiliations":[{"raw_affiliation_string":"Department of Accounting, School of Business, CC-191-7613, University of Cape Coast, Cape Coast, Ghana","institution_ids":["https://openalex.org/I133771110"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5001954485"],"corresponding_institution_ids":["https://openalex.org/I133771110"],"apc_list":{"value":2300,"currency":"USD","value_usd":2300},"apc_paid":{"value":2300,"currency":"USD","value_usd":2300},"fwci":2.8383,"has_fulltext":true,"cited_by_count":5,"citation_normalized_percentile":{"value":0.92828655,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":97},"biblio":{"volume":"2023","issue":null,"first_page":"1","last_page":"16"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11059","display_name":"Market Dynamics and Volatility","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T11059","display_name":"Market Dynamics and Volatility","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11711","display_name":"COVID-19 Pandemic Impacts","score":0.994700014591217,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T12916","display_name":"COVID-19 impact on air quality","score":0.9886999726295471,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/diversification","display_name":"Diversification (marketing strategy)","score":0.6536081433296204},{"id":"https://openalex.org/keywords/economics","display_name":"Economics","score":0.5097715258598328},{"id":"https://openalex.org/keywords/pandemic","display_name":"Pandemic","score":0.4979584217071533},{"id":"https://openalex.org/keywords/coronavirus-disease-2019","display_name":"Coronavirus disease 2019 (COVID-19)","score":0.4769503176212311},{"id":"https://openalex.org/keywords/econometrics","display_name":"Econometrics","score":0.46696263551712036},{"id":"https://openalex.org/keywords/coherence","display_name":"Coherence (philosophical gambling strategy)","score":0.45940297842025757},{"id":"https://openalex.org/keywords/boom","display_name":"Boom","score":0.43994027376174927},{"id":"https://openalex.org/keywords/monetary-economics","display_name":"Monetary economics","score":0.3940993845462799},{"id":"https://openalex.org/keywords/financial-economics","display_name":"Financial economics","score":0.38787487149238586},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.2758203148841858},{"id":"https://openalex.org/keywords/business","display_name":"Business","score":0.2124066948890686},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.176640123128891},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.14984408020973206},{"id":"https://openalex.org/keywords/internal-medicine","display_name":"Internal medicine","score":0.08722805976867676},{"id":"https://openalex.org/keywords/infectious-disease","display_name":"Infectious disease (medical specialty)","score":0.08632209897041321}],"concepts":[{"id":"https://openalex.org/C180916674","wikidata":"https://www.wikidata.org/wiki/Q3711935","display_name":"Diversification (marketing strategy)","level":2,"score":0.6536081433296204},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.5097715258598328},{"id":"https://openalex.org/C89623803","wikidata":"https://www.wikidata.org/wiki/Q12184","display_name":"Pandemic","level":5,"score":0.4979584217071533},{"id":"https://openalex.org/C3008058167","wikidata":"https://www.wikidata.org/wiki/Q84263196","display_name":"Coronavirus disease 2019 (COVID-19)","level":4,"score":0.4769503176212311},{"id":"https://openalex.org/C149782125","wikidata":"https://www.wikidata.org/wiki/Q160039","display_name":"Econometrics","level":1,"score":0.46696263551712036},{"id":"https://openalex.org/C2781181686","wikidata":"https://www.wikidata.org/wiki/Q4226068","display_name":"Coherence (philosophical gambling strategy)","level":2,"score":0.45940297842025757},{"id":"https://openalex.org/C141441539","wikidata":"https://www.wikidata.org/wiki/Q1970908","display_name":"Boom","level":2,"score":0.43994027376174927},{"id":"https://openalex.org/C556758197","wikidata":"https://www.wikidata.org/wiki/Q580018","display_name":"Monetary economics","level":1,"score":0.3940993845462799},{"id":"https://openalex.org/C106159729","wikidata":"https://www.wikidata.org/wiki/Q2294553","display_name":"Financial economics","level":1,"score":0.38787487149238586},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.2758203148841858},{"id":"https://openalex.org/C144133560","wikidata":"https://www.wikidata.org/wiki/Q4830453","display_name":"Business","level":0,"score":0.2124066948890686},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.176640123128891},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.14984408020973206},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.08722805976867676},{"id":"https://openalex.org/C524204448","wikidata":"https://www.wikidata.org/wiki/Q788926","display_name":"Infectious disease (medical specialty)","level":3,"score":0.08632209897041321},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C87717796","wikidata":"https://www.wikidata.org/wiki/Q146326","display_name":"Environmental engineering","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/C2779134260","wikidata":"https://www.wikidata.org/wiki/Q12136","display_name":"Disease","level":2,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1155/2023/3982443","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2023/3982443","pdf_url":"https://downloads.hindawi.com/journals/complexity/2023/3982443.pdf","source":{"id":"https://openalex.org/S207319443","display_name":"Complexity","issn_l":"1076-2787","issn":["1076-2787","1099-0526"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Complexity","raw_type":"journal-article"},{"id":"pmh:oai:RePEc:hin:complx:3982443","is_oa":false,"landing_page_url":"http://downloads.hindawi.com/journals/complexity/2023/3982443.xml","pdf_url":null,"source":{"id":"https://openalex.org/S4306401271","display_name":"RePEc: Research Papers in Economics","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I77793887","host_organization_name":"Federal Reserve Bank of St. Louis","host_organization_lineage":["https://openalex.org/I77793887"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article"},{"id":"pmh:oai:doaj.org/article:682d684f65cd47a08b3ddd3560963d84","is_oa":true,"landing_page_url":"https://doaj.org/article/682d684f65cd47a08b3ddd3560963d84","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Complexity, Vol 2023 (2023)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1155/2023/3982443","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2023/3982443","pdf_url":"https://downloads.hindawi.com/journals/complexity/2023/3982443.pdf","source":{"id":"https://openalex.org/S207319443","display_name":"Complexity","issn_l":"1076-2787","issn":["1076-2787","1099-0526"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Complexity","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Good health and well-being","score":0.47999998927116394,"id":"https://metadata.un.org/sdg/3"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4365815602.pdf"},"referenced_works_count":43,"referenced_works":["https://openalex.org/W2009748190","https://openalex.org/W2034139177","https://openalex.org/W2039734130","https://openalex.org/W2141852690","https://openalex.org/W2173306896","https://openalex.org/W2886178029","https://openalex.org/W2889728265","https://openalex.org/W2944575399","https://openalex.org/W3008273182","https://openalex.org/W3015769695","https://openalex.org/W3033923787","https://openalex.org/W3035779462","https://openalex.org/W3087232675","https://openalex.org/W3107697099","https://openalex.org/W3114319083","https://openalex.org/W3117076493","https://openalex.org/W3119989519","https://openalex.org/W3120397283","https://openalex.org/W3121899577","https://openalex.org/W3129480077","https://openalex.org/W3131932214","https://openalex.org/W3148660115","https://openalex.org/W3159797634","https://openalex.org/W3164166942","https://openalex.org/W3164970439","https://openalex.org/W3169106064","https://openalex.org/W3169335651","https://openalex.org/W3174022307","https://openalex.org/W3177425940","https://openalex.org/W3192181512","https://openalex.org/W3198068359","https://openalex.org/W3209783572","https://openalex.org/W4200613442","https://openalex.org/W4205842549","https://openalex.org/W4205857584","https://openalex.org/W4212813485","https://openalex.org/W4213188555","https://openalex.org/W4220920332","https://openalex.org/W4224058121","https://openalex.org/W4282028584","https://openalex.org/W4285235185","https://openalex.org/W4289637866","https://openalex.org/W4310249269"],"related_works":["https://openalex.org/W3161710089","https://openalex.org/W2353620890","https://openalex.org/W2353579321","https://openalex.org/W3130795706","https://openalex.org/W3049366059","https://openalex.org/W2088384090","https://openalex.org/W3087499667","https://openalex.org/W2537816284","https://openalex.org/W2383202214","https://openalex.org/W3124345231"],"abstract_inverted_index":{"In":[0],"a":[1],"time-frequency":[2],"biwavelet":[3],"framework,":[4],"we":[5],"analysed":[6],"the":[7,53,59,81,85,98,108,114,128],"short-,":[8,60],"medium-,":[9,61],"and":[10,33,46,52,62,73,77,110,124,130,154],"long-term":[11,63,131],"impacts":[12],"of":[13,44,84],"COVID-19-related":[14],"shocks":[15],"on":[16,55],"ten":[17],"energy":[18,56,91,125,143],"commodities":[19,57],"(i.e.,":[20],"Brent,":[21],"crude":[22],"oil,":[23,26],"coal,":[24],"heating":[25],"natural":[27],"gas,":[28],"gasoline,":[29],"ethanol,":[30],"naphtha,":[31],"propane,":[32],"uranium)":[34],"from":[35],"January":[36],"2020":[37],"to":[38],"April":[39],"2022.":[40],"We":[41],"document":[42],"intervals":[43],"high":[45,68],"low":[47],"coherence":[48,66],"between":[49,121,127],"COVID-19":[50,122],"cases":[51,123],"returns":[54,126],"across":[58,107],"horizons.":[64],"Low":[65],"at":[67],"frequencies":[69],"indicated":[70],"weak":[71],"correlation":[72],"signified":[74],"diversification,":[75],"hedging,":[76],"safe-haven":[78],"potentials":[79],"in":[80,103,141],"short":[82],"term":[83],"pandemic.":[86],"Our":[87],"findings":[88],"suggest":[89],"that":[90,134],"markets\u2019":[92],"dynamics":[93],"were":[94],"highly":[95],"driven":[96],"by":[97],"pandemic,":[99],"causing":[100],"significant":[101,148],"changes":[102],"market":[104,151],"returns,":[105],"particularly":[106],"medium-":[109,129],"low-frequency":[111],"bands.":[112],"Furthermore,":[113],"empirical":[115],"results":[116,146],"indicate":[117],"dynamic":[118],"lead-lag":[119],"relationships":[120],"horizons,":[132],"signifying":[133],"diversification":[135],"could":[136],"be":[137],"sought":[138],"through":[139],"crossinvestment":[140],"different":[142],"commodities.":[144],"The":[145],"have":[147],"implications":[149],"for":[150],"participants,":[152],"regulators,":[153],"practitioners.":[155]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":1}],"updated_date":"2026-04-05T17:49:38.594831","created_date":"2025-10-10T00:00:00"}
