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Publications

by alumni of

Department of Economics
University of Ibadan
Ibadan, Nigeria

These are publications listed in RePEc written by alumni of the above institution who are registered with the RePEc Author Service and listed in the RePEc Genealogy. List of alumni. For a list of publications by current members of the department, see here. Register yourself.

This page is updated in the first days of each month.

| Working papers | Journal articles |

Working papers

2024

  1. Guglielmo Maria Caporale & Luis Alberiko Gil-Alana & Sakiru A. Solarin & OlaOluwa S. Yaya, 2024. "Testing for Persistence in German Green and Brown Stock Market Indices," CESifo Working Paper Series 11207, CESifo.
  2. Yaya, OlaOluwa S. & Olayinka, Hammed Abiola & Adebiyi, Aliu A & Atoi, Ngozi Victor & Olugu, Mercy U. & Akinkunmi, Wasiu B., 2024. "Rural and Urban price inflation components in Nigeria: Persistence, Connectedness and Spillovers," MPRA Paper 121106, University Library of Munich, Germany.
  3. Furuoka, Fumitaka & Gil-Alana, Luis A. & Yaya, OlaOluwa S & Vo, Xuan Vinh, 2024. "Convergence of gender unemployment gaps in Africa: New evidence from Fourier ADF and KPSS unit root tests with break," MPRA Paper 122476, University Library of Munich, Germany.
  4. Gil-Alana, Luis A. & Yaya, OlaOluwa S & Adesina, Oluwaseun A. & Vo, Xuan Vinh, 2024. "Model-free and Model-based connectedness in highly, medium and lowly correlated financial returns: analyses of OECD inflations," MPRA Paper 123108, University Library of Munich, Germany.

2023

  1. Yener, Coskun & Akinsomi, Omokolade & Gil-Alana, Luis A. & Yaya, OlaOluwa S, 2023. "Stock Market Responses to COVID-19: The Behaviors of Mean Reversion, Dependence and Persistence," MPRA Paper 117002, University Library of Munich, Germany.
  2. Furuoka, Fumitaka & Yaya, OlaOluwa S & Ling, Piu Kiew & Al-Faryan, Mamdouh Abdulaziz Saleh & Islam, M. Nazmul, 2023. "Transmission of risks between energy and agricultural commodities: Frequency time-varying VAR, asymmetry and portfolio management," MPRA Paper 117003, University Library of Munich, Germany, revised 04 Dec 2022.

2022

  1. Guglielmo Maria Caporale & Luis A. Gil-Alana & OlaOluwa Simon Yaya, 2022. "Modelling Persistence and Non-Linearities in the US Treasury 10-Year Bond Yields," CESifo Working Paper Series 9554, CESifo.
  2. Yaya, OlaOluwa S & Ogbonna, Ahamuefula & Vo, Xuan Vinh, 2022. "Oil shocks and volatility of green investments: GARCH-MIDAS analyses," MPRA Paper 113707, University Library of Munich, Germany.
  3. Yaya, OlaOluwa A & Lukman, Adewale F. & Vo, Xuan Vinh, 2022. "Persistence and Volatility Spillovers of Bitcoin price to Gold and Silver prices," MPRA Paper 114521, University Library of Munich, Germany.
  4. Yaya, OlaOluwa S. & Ogbonna, Ahamuefula E. & Adesina, Ayobami O. & Alobaloke, Kafayat & Vo, Xuan Vinh, 2022. "Time-variation between metal commodities and oil, and the impact of oil shocks: GARCH-MIDAS and DCC-MIDAS analyses," MPRA Paper 114689, University Library of Munich, Germany.

2021

  1. Afees A. Salisu & Taofeek O. Ayinde & Rangan Gupta & Mark E. Wohar, 2021. "Global Evidence of the COVID-19 Shock on Real Equity Prices and Real Exchange Rates: A Counterfactual Analysis with a Threshold-Augmented GVAR Model," Working Papers 202154, University of Pretoria, Department of Economics.
  2. Yaya, OlaOluwa S & Adekoya, Oluwasegun B. & Babatunde, Oluwagbenga T., 2021. "Testing Fractional Persistence and Nonlinearity in Infant Mortality Rates of Asia Countries," MPRA Paper 109368, University Library of Munich, Germany.
  3. Yaya, OlaOluwa S & Vo, Xuan Vinh & Adekoya, Oluwasegun B., 2021. "Convergence among themselves and Middle-income trap of South-East Asian Nations: Findings from a New approach," MPRA Paper 109372, University Library of Munich, Germany.
  4. Alaba, Oluwayemisi O. & Ojo, Oluwadare O. & Yaya, OlaOluwa S & Abu, Nurudeen & Ajobo, Saheed A., 2021. "Comparative Analysis of Market Efficiency and Volatility of Energy Prices Before and During COVID-19 Pandemic Periods," MPRA Paper 109825, University Library of Munich, Germany.
  5. Coskun, Yener & Akinsomi, Omokolade & Gil-Alana, Luis A. & Yaya, OlaOIuwa S., 2021. "Stock Market Responses to COVID-19: Mean Reversion, Dependence and Persistence Behaviours," MPRA Paper 109827, University Library of Munich, Germany.
  6. Yaya, OlaOluwa S. & Vo, Xuan Vinh & Adekoya, Oluwasegun B., 2021. "Market Efficiency of Asian Stocks: Evidence based on Narayan-Liu-Westerlund GARCH-based Unit root test," MPRA Paper 109828, University Library of Munich, Germany.
  7. Yaya, OlaOluwa S. & Gil-Alana, Luis A. & Adekoya, Oluwasegun B. & Vo, Xuan Vinh, 2021. "How fearful are Commodities and US stocks in response to Global fear? Persistence and Cointegration analyses," MPRA Paper 109829, University Library of Munich, Germany.
  8. Yaya, OlaOluwa S & Vo, Xuan Vinh & Olayinka, Hammed Abiola, 2021. "Gold and Silver prices, their stocks and market fear gauges: Testing fractional cointegration using a robust approach," MPRA Paper 109830, University Library of Munich, Germany.
  9. Awolaja, Oladapo G. & Yaya, OlaOluwa S & Vo, Xuan Vinh & Ogbonna, Ahamuefula & Joseph, Solomon O., 2021. "Unemployment Hysteresis in Middle East and North Africa Countries: Panel SUR-based Unit root test with a Fourier function," MPRA Paper 109831, University Library of Munich, Germany.
  10. Olubusoye, Olusanya E & Akintande, Olalekan J. & Yaya, OlaOluwa S. & Ogbonna, Ahamuefula & Adenikinju, Adeola F., 2021. "Energy Pricing during the COVID-19 Pandemic: Predictive Information-Based Uncertainty Indexes with Machine Learning Algorithm," MPRA Paper 109838, University Library of Munich, Germany.
  11. Olubusoye, Olusanya E & Yaya, OlaOluwa S. & Ogbonna, Ahamuefula, 2021. "An Information-Based Index of Uncertainty and the predictability of Energy Prices," MPRA Paper 109839, University Library of Munich, Germany.
  12. Yaya, OlaOluwa S. & Vo, Xuan Vinh, 2021. "Testing day-of-the-week persistence and seasonality in Spanish Electricity Energy prices," MPRA Paper 112652, University Library of Munich, Germany, revised 03 Apr 2022.
  13. Yaya, OlaOluwa S & Akano, Rafiu O & Adekoya, Oluwasegun B., 2021. "Market efficiency and Volatility persistence of green investments before and during COVID-19 pandemic," MPRA Paper 113706, University Library of Munich, Germany.

2020

  1. Yaya, OaOluwa S & Vo, Xuan Vinh & Ogbonna, Ahamuefula E & Adewuyi, Adeolu O, 2020. "Modelling Cryptocurrency High-Low Prices using Fractional Cointegrating VAR," MPRA Paper 102190, University Library of Munich, Germany, revised 02 Aug 2020.
  2. Yaya, OlaOluwa S & Oyekunrin, Oluwaseun A & Ogbonna, Ahamuefula E, 2020. "Life Expectancy in West African Countries: Evidence of Convergence and Catching Up with the North," MPRA Paper 102873, University Library of Munich, Germany.
  3. Yaya, OlaOluwa S & Olalude, Gbenga A & Olayinka, Hameed A & Jimoh, Toheeb A & Adebiyi, Aliu A, 2020. "Household Expenditure In Africa: Evidence Of Mean Reversion," MPRA Paper 102876, University Library of Munich, Germany.
  4. Yaya, OlaOluwa S & Ajose, Toyin S & Ogbonna, Ahamuefua E, 2020. "Long-range dependence and Trends in Nigerian Popular Music Artists’ Famosity-“Davido”, “Burna Boy”, “Tiwa Savage” and “Wizkid”: Evidence from Google Trends," MPRA Paper 104445, University Library of Munich, Germany.
  5. Yaya, OlaOluwa S & Adekoya, Oluwasegun B. & Adesiyan, Femi, 2020. "The Persistence of Stock Market Returns during the Presidential elections in Nigeria," MPRA Paper 99390, University Library of Munich, Germany.

2019

  1. Yaya, OlaOluwa S & Ogbonna, Ephraim A, 2019. "Do we Experience Day-of-the-week Effects in Returns and Volatility of Cryptocurrency?," MPRA Paper 91429, University Library of Munich, Germany.
  2. Yaya, OlaOluwa S & Ogbonna, Ephraim A & Mudida, Robert, 2019. "Market Efficiency and Volatility Persistence of Cryptocurrency during Pre- and Post-Crash Periods of Bitcoin: Evidence based on Fractional Integration," MPRA Paper 91450, University Library of Munich, Germany.
  3. Yaya, OlaOluwa S & Ogbonna, Ahamuefula & Atoi, Ngozi V, 2019. "Are inflation rates in OECD countries actually stationary during 2011-2018? Evidence based on Fourier Nonlinear Unit root tests with Break," MPRA Paper 93937, University Library of Munich, Germany.
  4. Yaya, OlaOluwa S & Ogbonna, Ahamuefula & Mudida, Robert, 2019. "Hysteresis of Unemployment Rates in Africa: New Findings from Fourier ADF test," MPRA Paper 93939, University Library of Munich, Germany.
  5. Gil-Alana, Luis A. & Mudida, Robert & Yaya, OlaOluwa S & Osuolale, Kazeem & Ogbonna, Ephraim A, 2019. "Influence of US Presidential Terms on S&P500 Index Using a Time Series Analysis Approach," MPRA Paper 93941, University Library of Munich, Germany.
  6. Yaya, OlaOluwa S & Ogbonna, Ephraim A & Furuoka, Fumitaka & Gil-Alana, Luis A., 2019. "A new unit root analysis for testing hysteresis in unemployment," MPRA Paper 96621, University Library of Munich, Germany.
  7. Furuoka, Fumitaka & Pui, Kiew Ling & Ezeoke, Chinyere Mary Rose & Jacob, Ray Ikechukwu & Yaya, OlaOluwa S, 2019. "Growth Slowdowns and Middle-Income Trap: Evidence from New Unit Root Framework," MPRA Paper 98672, University Library of Munich, Germany.

2018

  1. Ogunjimi, Joshua & Oladipupo, Dauda, 2018. "Dynamics of Demographic Structure and Economic Growth in Nigeria," MPRA Paper 94988, University Library of Munich, Germany, revised 2018.
  2. Ogunjimi, Joshua & Adebayo, Adedeji, 2018. "Health Expenditure, Health Outcomes and Economic Growth in Nigeria," MPRA Paper 94989, University Library of Munich, Germany, revised 2019.
  3. Afees A. Salisu & Taofeek O. Ayinde, 2018. "Testing for spillovers in Naira exchange rates: The role of electioneering& global financial crisis," Working Papers 050, Centre for Econometric and Allied Research, University of Ibadan.
  4. O. Akinsomi & Y. Coskun & L. A. Gil-Alana & O. S. Yaya, 2018. "Is there Convergence between the Brics and International Securitized Property Markets?," AfRES afres2018_113, African Real Estate Society (AfRES).
  5. Yaya, OlaOluwa A & Gil-Alana, Luis A., 2018. "Modelling Long Range Dependence and Non-linearity in the Infant Mortality Rates of Africa Countries," MPRA Paper 88752, University Library of Munich, Germany.
  6. Gil-Alana, Luis A. & Yaya, OlaOluwa S, 2018. "How do Stocks in BRICS co-move with REITs?," MPRA Paper 88753, University Library of Munich, Germany.
  7. Akinsomi, Omokolade & Coskun, Yener & Gil-Alana, Luis A. & Yaya, OlaOluwa S, 2018. "Is there convergence between the BRICS and International REIT Markets?," MPRA Paper 88756, University Library of Munich, Germany.
  8. Gil-Alana, Luis A. & Yaya, OlaOluwa S, 2018. "Testing Fractional Unit Roots with Non-linear Smooth Break Approximations using Fourier functions," MPRA Paper 90516, University Library of Munich, Germany.
  9. Yaya, OlaOluwa S & Ling, Pui Kiew & Furuoka, Fumitaka & Ezeoke, Chinyere Mary Rose & Jacob, Ray Ikechukwu, 2018. "Can Western African countries catch up with Nigeria? Evidence from Smooth Nonlinearity method in Fractional Unit root framework," MPRA Paper 90517, University Library of Munich, Germany.
  10. Yaya, OlaOluwa S & Gil-Alana, Luis A., 2018. "High and Low Intraday Commodity Prices: A Fractional Integration and Cointegration Approach," MPRA Paper 90518, University Library of Munich, Germany.
  11. Yaya, OlaOluwa & Ogbonna, Ahamuefula, 2018. "Modelling crude oil-petroleum products’ price nexus using dynamic conditional correlation GARCH models," MPRA Paper 91227, University Library of Munich, Germany.
  12. Yaya, OlaOluwa S & Ogbonna, Ephraim A & Olubusoye, Olusanya E, 2018. "How Persistent and Dependent are Pricing of Bitcoin to other Cryptocurrencies Before and After 2017/18 Crash?," MPRA Paper 91253, University Library of Munich, Germany.

2017

  1. Ogunjimi, Joshua & Amune, Benjamin, 2017. "Impact of Infrastructure on Foreign Direct Investment in Nigeria: An Autoregressive Distirbuted Lag (ARDL) Approach," MPRA Paper 75996, University Library of Munich, Germany.
  2. Tumala, Mohammed M & Olubusoye, Olusanya E & Yaaba, Baba N & Yaya, OlaOluwa S & Akanbi, Olawale B, 2017. "Forecasting Nigerian Inflation using Model Averaging methods: Modelling Frameworks to Central Banks," MPRA Paper 88754, University Library of Munich, Germany, revised Feb 2018.
  3. Yaya, OlaOluwa S & Akinlana, Damola M & Ogbonna, Ahamuefula E, 2017. "Investigating Structural break-GARCH-based Unit root test in US exchange rates," MPRA Paper 88768, University Library of Munich, Germany.
  4. Yaya, OlaOluwa S, 2017. "Another Look at the Stationarity of Inflation rates in OECD countries: Application of Structural break-GARCH-based unit root tests," MPRA Paper 88769, University Library of Munich, Germany.
  5. Tumala, Mohammed M & Olubusoye, Olusanya E & Yaaba, Baba N & Yaya, OlaOluwa S & Akanbi, Olawale B, 2017. "Investigating Predictors of Inflation in Nigeria: BMA and WALS Techniques," MPRA Paper 88773, University Library of Munich, Germany, revised Feb 2018.
  6. Yaya, OlaOluwa S & Osanyintupin, Olawale D, 2017. "Determinants of Desired and Actual Number of Children and the Risk of having more than Two Children in Ghana and Nigeria," MPRA Paper 88824, University Library of Munich, Germany.

2016

  1. Yaya, OlaOluwa S & Amoateng, Acheampong Y, 2016. "Social Structure and Variation in the Family Formation Process: The Case of Age at First Marriage and Duration between First Marriage and First Birth in selected sub-Saharan African Countries," MPRA Paper 88825, University Library of Munich, Germany.
  2. Luis A. Gil-Alana & Rangan Gupta & Olanrewaju I. Shittu & OlaOluwa S. Yaya, 2016. "Market Efficiency of Baltic Stock Markets: A Fractional Integration Approach," Working Papers 201617, University of Pretoria, Department of Economics.

2015

  1. Luis Alberiko & OlaOluwa S. Yaya & Olarenwaju I. Shittu, 2015. "Fractional integration and asymmetric volatility in european, asian and american bull and bear markets. Applications to high frequency stock data," NCID Working Papers 07/2015, Navarra Center for International Development, University of Navarra.
  2. Luis A. Gil-Alana & Rangan Gupta & Olusanya E. Olubusoye & OlaOluwa S. Yaya, 2015. "Time Series Analysis of Persistence in Crude Oil Price Volatility across Bull and Bear Regimes," Working Papers 201580, University of Pretoria, Department of Economics.

2014

  1. F. Akpan, Usenobong & E. Abang, Dominic, 2014. "Environmental Quality and Economic Growth: A Panel Analysis of the "U" in Kuznets," MPRA Paper 54461, University Library of Munich, Germany.
  2. Luis A. Gil-Alana & OlaOluwa Simon Yaya, 2014. "The Relationship Between Oil Prices and the Nigerian Stock Market, an Analysis Based on Fractional Integration and Cointegration," NCID Working Papers 04/2014, Navarra Center for International Development, University of Navarra.
  3. Gil-Alana, Luis A. & Yaya, OlaOluwa S & Shittu, Olanrewaju I, 2014. "GDP Per Capita in Africa before the Global Financial Crisis: Persistence, Mean Reversion and Long Memory Features," MPRA Paper 88758, University Library of Munich, Germany.

2013

  1. Luis Alberiko Gil-Alaña & Olanrewaju L. Shittu & OlaOluwa S. Yaya, 2013. "On the persistence and volatility in European, American and Asian stocks bull and bear markets," NCID Working Papers 12/2013, Navarra Center for International Development, University of Navarra.
  2. Rangan Gupta & Luis A. Gil-Alana & OlaOluwa S. Yaya, 2013. "Does Sunspot Numbers Cause Global Temperatures? Evidence from a Frequency Domain Causality Test," Working Papers 201382, University of Pretoria, Department of Economics.

2011

  1. Akpan, Usenobong F. & Chuku, Agbai, 2011. "Economic Growth and Environmental Degradation in Nigeria: Beyond the Environmental Kuznets Curve," MPRA Paper 31241, University Library of Munich, Germany.
  2. Luis Alberiko Gil-Alaña & Olanrewaju L. Shittu & OlaOluwa S. Yaya, 2011. "Long memory, strcutural breaks and mean shifts in the inflation rates in Nigeria," NCID Working Papers 04/2011, Navarra Center for International Development, University of Navarra.

2010

  1. Yaya, OlaOluwa S & Shittu, Olanrewaju I, 2010. "On the Impact of Inflation and Exchange Rate on Conditional Stock Market Volatility: A Re-Assessment," MPRA Paper 88759, University Library of Munich, Germany.

Journal articles

2025

  1. Joshua Adeyemi Afolabi & Isiaka Akande Raifu, 2025. "Toward economic resilience in Sub‐Saharan Africa: The role of institutional quality and human capital development," Sustainable Development, John Wiley & Sons, Ltd., vol. 33(2), pages 2566-2578, April.
  2. Khan, Naveed & Yaya, OlaOluwa S. & Vo, Xuan Vinh & Zada, Hassan, 2025. "Quantile time-frequency connectedness and spillovers among financial stress, cryptocurrencies and commodities," Resources Policy, Elsevier, vol. 103(C).
  3. OlaOluwa S. Yaya & Derick D. Quintino & Cristiane M. Ogino & Olanrewaju I. Shittu & Dora M. F. Almeida & Paulo J. S. Ferreira, 2025. "Volatility interdependencies of cryptocurrencies, gold, oil, and US stocks: quantile connectedness analysis with intraday data," SN Business & Economics, Springer, vol. 5(1), pages 1-30, January.

2024

  1. Usenobong Akpan & Ukpai Kama, 2024. "Does institutional quality really matter for environmental quality?," Energy & Environment, , vol. 35(8), pages 4361-4385, December.
  2. Isiaka Akande Raifu & Joshua Adeyemi Afolabi, 2024. "Revisiting the Tourism-Led-Growth Hypothesis - Fresh Evidence From the World’s Top Ten Tourist Destinations," Asian Economics Letters, Asia-Pacific Applied Economics Association, vol. 5(1), pages 1-5.
  3. Alarudeen Aminu & Joshua Adeyemi Afolabi, 2024. "The Asymmetric Effect Of Exchange Rate Pass-Through To Domestic Prices: Evidence From Nigeria," Economic Annals, Faculty of Economics and Business, University of Belgrade, vol. 69(243), pages 117-141, October –.
  4. Oluseyi Omosuyi & Joshua Adeyemi Afolabi, 2024. "Assessing the growth effect of illicit financial flows in an emerging economy: the case of Nigeria," International Journal of Business and Emerging Markets, Inderscience Enterprises Ltd, vol. 16(2), pages 155-169.
  5. Joshua Adeyemi Afolabi & Foluso Modupe Adeyinka, 2024. "Triple Helix model: leveraging endogenous innovation systems for economic transformation in Africa," International Journal of Technological Learning, Innovation and Development, Inderscience Enterprises Ltd, vol. 15(3), pages 225-242.
  6. Oluwatosin Adeniyi & Wasiu Adekunle & Joshua Afolabi & Terver T. Kumeka, 2024. "Tourism-income inequality Nexus in Africa: evidence from SADC countries," Current Issues in Tourism, Taylor & Francis Journals, vol. 27(18), pages 2899-2917, September.
  7. Joshua Adeyemi Afolabi & Isiaka Akande Raifu, 2024. "FDI, institutional quality and gender employment in Sub-Saharan Africa," Studies in Economics and Econometrics, Taylor & Francis Journals, vol. 48(3), pages 252-274, July.
  8. Joshua Adeyemi Afolabi, 2024. "Does illicit financial flows crowd‐out domestic investment? Evidence from Sub‐Saharan Africa economic regions," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 29(2), pages 1417-1431, April.
  9. OlaOluwa Yaya, 2024. "Testing Day-Of-The-Week Persistence and Seasonality in Spanish Electricity Energy Prices," Energy RESEARCH LETTERS, Asia-Pacific Applied Economics Association, vol. 5(1), pages 1-7.
  10. OlaOluwa Yaya & Olayinka Adenikinju & Hammed A. Olayinka, 2024. "African stock markets’ connectedness: Quantile VAR approach," Modern Finance, Modern Finance Institute, vol. 2(1), pages 51-68.
  11. Ogbonna, Ahamuefula E. & Farag, Markos & Akintande, Olalekan J. & Yaya, OlaOluwa S. & Olubusoye, Olusanya E., 2024. "Re-validating the Phillips Curve hypothesis in Africa and the role of oil prices: A mixed-frequency approach," Energy, Elsevier, vol. 303(C).
  12. Dettoni, Robinson & Gil-Alana, Luis A. & Yaya, OlaOluwa S., 2024. "Stock market prices and Dividends in the US: Bubbles or Long-run equilibria relationships?," International Review of Financial Analysis, Elsevier, vol. 94(C).
  13. OlaOluwa S. Yaya & Hammed A. Olayinka & Ahamuefula E. Ogbonna & Mamdouh Abdulaziz Saleh Al-Faryan & Xuan Vinh Vo, 2024. "Dynamic connectedness of economic policy uncertainty in G7 countries and the influence of the USA and UK on non-G7 countries," Economic Change and Restructuring, Springer, vol. 57(2), pages 1-27, April.
  14. Fumitaka Furuoka & Luis A. Gil-Alana & OlaOluwa S. Yaya & Elayaraja Aruchunan & Ahamuefula E. Ogbonna, 2024. "A new fractional integration approach based on neural network nonlinearity with an application to testing unemployment hysteresis," Empirical Economics, Springer, vol. 66(6), pages 2471-2499, June.
  15. OlaOluwa S. Yaya & Oluwasegun B. Adekoya & Xuan Vinh Vo & Mamdouh Abdulaziz Saleh Al‐Faryan, 2024. "Stock Market Efficiency in Asia: Evidence from the Narayan–Liu–Westerlund's GARCH‐based unit root test," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 29(1), pages 91-101, January.
  16. Fumitaka Furuoka & Kiew Ling Pui & Chinyere Ezeoke & Ray I. Jacob & Olaoluwa S. Yaya, 2024. "Growth Slowdowns And Middle-Income Trap: Evidence From New Unit Root Framework," The Singapore Economic Review (SER), World Scientific Publishing Co. Pte. Ltd., vol. 69(01), pages 461-477, March.

2023

  1. Tomiwa Sunday Adebayo & Seyi Saint Akadiri & Usenobong Akpan & Bisola Aladenika, 2023. "Asymmetric effect of financial globalization on carbon emissions in G7 countries: Fresh insight from quantile-on-quantile regression," Energy & Environment, , vol. 34(5), pages 1285-1304, August.
  2. Raifu Isiaka Akande & Afolabi Joshua Adeyemi, 2023. "Investigating Time-Varying Causality Between Military Spending and Macroeconomic Indicators in the United States," Peace Economics, Peace Science, and Public Policy, De Gruyter, vol. 29(4), pages 339-371, December.
  3. Afolabi, Joshua Adeyemi, 2023. "Natural resource rent and environmental quality nexus in Sub-Saharan Africa: Assessing the role of regulatory quality," Resources Policy, Elsevier, vol. 82(C).
  4. Afolabi, Joshua Adeyemi, 2023. "Advancing digital economy in Africa: The role of critical enablers," Technology in Society, Elsevier, vol. 75(C).
  5. Musibau Adetunji Babatunde & Joshua Adeyemi Afolabi, 2023. "Growth effect of trade misinvoicing in Sub-Saharan Africa: the role of governance," International Journal of Development Issues, Emerald Group Publishing Limited, vol. 22(2), pages 241-254, May.
  6. Joshua Adeyemi Afolabi & Blessing Ufuoma Olanrewaju, 2023. "Cryptocurrencies and central banks' monetary policy roles," International Journal of Electronic Finance, Inderscience Enterprises Ltd, vol. 12(2), pages 97-116.
  7. Isiaka Akande Raifu & Joshua Adeyemi Afolabi, 2023. "Military Expenditure and Unemployment in South Africa: Evidence from Linear and Nonlinear ARDL with and without Structural Break," Economic Alternatives, University of National and World Economy, Sofia, Bulgaria, issue 2, pages 321-343, June.
  8. Isiaka Akande Raifu & Joshua Adeyemi Afolabi, 2023. "The Effect of Financial Development on Unemployment in Emerging Market Countries," Global Journal of Emerging Market Economies, Emerging Markets Forum, vol. 15(3), pages 354-384, September.
  9. Joshua Adeyemi Afolabi, 2023. "Place a bar on government size to bar growth reversal: fresh evidence from BARS curve hypothesis in Sub-Saharan Africa," Studies in Economics and Econometrics, Taylor & Francis Journals, vol. 47(4), pages 303-320, October.
  10. Taofeek O. AYINDE & Farouq A. ADEYEMI, 2023. "Global Evidence of Oil Supply Shocks and Climate Risk a GARCH-MIDAS Approach," Energy RESEARCH LETTERS, Asia-Pacific Applied Economics Association, vol. 4(2), pages 1-7.
  11. Ayinde, Taofeek O. & Olaniran, Abeeb O. & Abolade, Onomeabure C. & Ogbonna, Ahamuefula Ephraim, 2023. "Technology shocks - Gold market connection: Is the effect episodic to business cycle behaviour?," Resources Policy, Elsevier, vol. 84(C).
  12. OlaOluwa Yaya & Rafiu Akano & Oluwasegun Adekoya, 2023. "Market Efficiency and Volatility Persistence of Green Investments Before and During the COVID-19 Pandemic," Asian Economics Letters, Asia-Pacific Applied Economics Association, vol. 4(1), pages 1-6.
  13. Furuoka, Fumitaka & Yaya, OlaOluwa Simon & Ling, Pui Kiew & Al-Faryan, Mamdouh Abdulaziz Saleh & Islam, M. Nazmul, 2023. "Transmission of risks between energy and agricultural commodities: Frequency time-varying VAR, asymmetry and portfolio management," Resources Policy, Elsevier, vol. 81(C).
  14. Aviral Kumar Tiwari & Emmanuel Joel Aikins Abakah & OlaOluwa Simon Yaya & Kingsley Opoku Appiah, 2023. "Tail risk dependence, co-movement and predictability between green bond and green stocks," Applied Economics, Taylor & Francis Journals, vol. 55(2), pages 201-222, January.

2022

  1. Joshua Adeyemi Afolabi, 2022. "Trade misinvoicing and domestic resource mobilization in Nigeria," International Journal of Development Issues, Emerald Group Publishing Limited, vol. 22(1), pages 91-106, December.
  2. Salisu, Afees A. & Ayinde, Taofeek O. & Gupta, Rangan & Wohar, Mark E., 2022. "Global evidence of the COVID-19 shock on real equity prices and real exchange rates: A counterfactual analysis with a threshold-augmented GVAR model," Finance Research Letters, Elsevier, vol. 47(PA).
  3. Taofeek Olusola Ayinde, 2022. "Modelling macroeconomic trilemma and central bank behaviour in Nigeria: a Markov-switching approach," Economic Change and Restructuring, Springer, vol. 55(3), pages 1303-1325, August.
  4. Guglielmo Maria Caporale & Luis A Gil-Alana & Olaoluwa Simon Yaya, 2022. "Modeling persistence and non-linearities in the US treasury 10-year bond yields," Economics Bulletin, AccessEcon, vol. 42(3), pages 1221-1229.
  5. Adekoya, Oluwasegun B. & Oliyide, Johnson A. & Yaya, OlaOluwa S. & Al-Faryan, Mamdouh Abdulaziz Saleh, 2022. "Does oil connect differently with prominent assets during war? Analysis of intra-day data during the Russia-Ukraine saga," Resources Policy, Elsevier, vol. 77(C).
  6. Yaya, OlaOluwa S. & Ogbonna, Ahamuefula E. & Vo, Xuan Vinh, 2022. "Oil shocks and volatility of green investments: GARCH-MIDAS analyses," Resources Policy, Elsevier, vol. 78(C).
  7. Yaya, OlaOluwa S. & Lukman, Adewale F. & Vo, Xuan Vinh, 2022. "Persistence and volatility spillovers of bitcoin price to gold and silver prices," Resources Policy, Elsevier, vol. 79(C).
  8. Yaya, OlaOluwa S. & Ogbonna, Ahamuefula E. & Adesina, Oluwaseun A. & Alobaloke, Kafayat A. & Vo, Xuan Vinh, 2022. "Time-variation between metal commodities and oil, and the impact of oil shocks: GARCH-MIDAS and DCC-MIDAS analyses," Resources Policy, Elsevier, vol. 79(C).
  9. Adekoya, Oluwasegun B. & Yaya, OlaOluwa S. & Oliyide, Johnson A. & Posu, Sunday M.A., 2022. "Growth and growth disparities in Africa: Are differences in renewable energy use, technological advancement, and institutional reforms responsible?," Structural Change and Economic Dynamics, Elsevier, vol. 61(C), pages 265-277.
  10. OlaOluwa S. Yaya & Xuan Vinh Vo & Ahamuefula E. Ogbonna & Adeolu O. Adewuyi, 2022. "Modelling cryptocurrency high–low prices using fractional cointegrating VAR," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 27(1), pages 489-505, January.

2021

  1. Joshua Adeyemi Afolabi & Chinonyerem Emmanuel Oji, 2021. "Nigeria-China bilateral relations: a skewed or balance relation?," International Journal of Diplomacy and Economy, Inderscience Enterprises Ltd, vol. 7(2), pages 129-145.
  2. Morolake Bolaji & John O. Adeoti & Joshua Adeyemi Afolabi, 2021. "The imperative of research and development in Nigeria: lessons from the COVID-19 pandemic," International Journal of Technological Learning, Innovation and Development, Inderscience Enterprises Ltd, vol. 13(2), pages 168-189.
  3. Taofeek Olusola AYINDE & Muritala Olayemi OGUNSIJI & Kaosarat Olawunmi IBIKUNLE, 2021. "Twin Deficit Hypothesis and Macroeconomic Fundamentals: New Evidence from Nigeria," Quarterly Journal of Econometrics Research, Conscientia Beam, vol. 7(1), pages 1-12.
  4. Taofeek Olusola Ayinde & Abiodun S. Bankole, 2021. "Fiscal dominance and exchange rate stability in Nigeria," Future Business Journal, Springer, vol. 7(1), pages 1-15, December.
  5. OlaOluwa S. Yaya & Ahamuefula E. Ogbonna & Fumitaka Furuoka & Luis A. Gil‐Alana, 2021. "A New Unit Root Test for Unemployment Hysteresis Based on the Autoregressive Neural Network," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 83(4), pages 960-981, August.
  6. Yaya, OlaOluwa S. & Vo, Xuan Vinh & Olayinka, Hammed A., 2021. "Gold and silver prices, their stocks and market fear gauges: Testing fractional cointegration using a robust approach," Resources Policy, Elsevier, vol. 72(C).
  7. Yaya, OlaOluwa S. & Gil-Alana, Luis A. & Adekoya, Oluwasegun B. & Vo, Xuan Vinh, 2021. "How fearful are commodities and US stocks in response to global fear? Persistence and cointegration analyses," Resources Policy, Elsevier, vol. 74(C).
  8. OlaOluwa S. Yaya & Nurudeen Abu & Tayo P. Ogundunmade, 2021. "Economic policy uncertainty in G7 countries: evidence of long-range dependence and cointegration," Economic Change and Restructuring, Springer, vol. 54(2), pages 541-556, May.
  9. Luis A. Gil-Alana & OlaOluwa S. Yaya, 2021. "Testing fractional unit roots with non-linear smooth break approximations using Fourier functions," Journal of Applied Statistics, Taylor & Francis Journals, vol. 48(13-15), pages 2542-2559, November.
  10. Omokolade Akinsomi & Yener Coskun & Luis A. Gil-Alana & OlaOluwa S. Yaya, 2021. "Is There Convergence Between BRICS Listed Property Stocks and International REITs?," Journal of Real Estate Portfolio Management, Taylor & Francis Journals, vol. 27(1), pages 29-42, January.
  11. Oladapo Gbenga Awolaja & OlaOluwa Simon Yaya & Ahamuefula Ephraim Ogbonna & Solomon Onuche Joseph & Xuan Vinh Vo, 2021. "Unemployment hysteresis in Middle East and North Africa countries: panel SUR-based unit root test with a Fourier function," Middle East Development Journal, Taylor & Francis Journals, vol. 13(2), pages 318-334, July.
  12. Yaya OlaOluwa S. & Otekunrin Oluwaseun A. & Ogbonna Ahamuefula E., 2021. "Life expectancy in West African countries: Evidence of convergence and catching up with the north," Statistics in Transition New Series, Statistics Poland, vol. 22(1), pages 75-88, March.
  13. OlaOluwa S. Yaya & Ahamuefula E. Ogbonna & Robert Mudida & Nuruddeen Abu, 2021. "Market efficiency and volatility persistence of cryptocurrency during pre‐ and post‐crash periods of Bitcoin: Evidence based on fractional integration," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 26(1), pages 1318-1335, January.
  14. Luis A. Gil‐Alana & Robert Mudida & OlaOluwa S. Yaya & Kazeem A. Osuolale & Ahamuefula E. Ogbonna, 2021. "Mapping US presidential terms with S&P500 index: Time series analysis approach," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 26(2), pages 1938-1954, April.

2020

  1. Joshua Adeyemi Ogunjimi, 2020. "Corporate Social Responsibilities and Firm Performance," Asian Business Research Journal, Eastern Centre of Science and Education, vol. 5, pages 55-61.
  2. Joshua Adeyemi Ogunjimi, 2020. "Exchange Rate Dynamics and Sectoral Output in Nigeria: A Symmetric and Asymmetric Approach," American Journal of Social Sciences and Humanities, Online Science Publishing, vol. 5(1), pages 178-193.
  3. Joshua Adeyemi Ogunjimi, 2020. "Oil Price Asymmetry and Sectoral Output in Nigeria," International Journal of Economics, Business and Management Studies, Online Science Publishing, vol. 7(1), pages 1-15.
  4. Taofeek Olusola Ayinde & Abiodun S.Bankole & Oluwatosin Adeniyi, 2020. "Modelling central bank behaviour in Nigeria : A Markov-switching approach," Central Bank Review, Research and Monetary Policy Department, Central Bank of the Republic of Turkey, vol. 20(4), pages 213-221.
  5. OlaOluwa S. Yaya & Fumitaka Furuoka & Kiew Ling Pui & Ray Ikechukwu Jacob & Chinyere M. Ezeoke, 2020. "Investigating Asian regional income convergence using Fourier Unit Root test with Break," International Economics, CEPII research center, issue 161, pages 120-129.
  6. Gil-Alana, Luis A. & Yaya, OlaOluwa S. & Akinsomi, Omokolade & Coskun, Yener, 2020. "How do stocks in BRICS co-move with real estate stocks?," International Review of Economics & Finance, Elsevier, vol. 69(C), pages 93-101.
  7. OlaOluwa Simon Yaya & Luis Alberiko Gil-Alana, 2020. "Modelling Long-Range Dependence and Non-linearity in the Infant Mortality Rates of African Countries," International Advances in Economic Research, Springer;International Atlantic Economic Society, vol. 26(3), pages 303-315, August.

2019

  1. OlaOluwa S.Yaya & Pui Kiew Ling & Fumitaka Furuoka & Chinyere Mary Rose Ezeoke & Ray Ikechukwu Jacob, 2019. "Can West African countries catch up with Nigeria? Evidence from smooth nonlinearity method in fractional unit root framework," International Economics, CEPII research center, issue 158, pages 51-63.
  2. Yaya, OlaOluwa S. & Ogbonna, Ahamuefula E. & Olubusoye, Olusanya E., 2019. "How persistent and dynamic inter-dependent are pricing of Bitcoin to other cryptocurrencies before and after 2017/18 crash?," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 531(C).
  3. OlaOluwa S. Yaya & Lukman Saka & Olawale B. Akanbi, 2019. "Assessing Market Efficiency And Volatility Of Exchange Rates in South Africa and United Kingdom: Analysis Using Hurst Exponent," Journal of Developing Areas, Tennessee State University, College of Business, vol. 53(1), pages 127-145, January-M.
  4. OlaOluwa S. Yaya & Luis A. Gil-Alana & Acheampong Y. Amoateng, 2019. "Under-5 Mortality Rates in G7 Countries: Analysis of Fractional Persistence, Structural Breaks and Nonlinear Time Trends," European Journal of Population, Springer;European Association for Population Studies, vol. 35(4), pages 675-694, October.
  5. OlaOluwa S. Yaya & Ahamuefula E. Ogbonna & Robert Mudida, 2019. "Hysteresis of unemployment rates in Africa: new findings from Fourier ADF test," Quality & Quantity: International Journal of Methodology, Springer, vol. 53(6), pages 2781-2795, November.
  6. Yaya O. S. & Akintande O. J. & Ogbonna A. E. & Adegoke H. M., 2019. "Cpi Inflation In Africa: Fractional Persistence, Mean Reversion And Nonlinearity," Statistics in Transition New Series, Statistics Poland, vol. 20(3), pages 119-132, September.

2018

  1. Afees A. Salisu & Taofeek O. Ayinde, 2018. "Testing for spillovers in naira exchange rates: The role of electioneering & global financial crisis," Borsa Istanbul Review, Research and Business Development Department, Borsa Istanbul, vol. 18(4), pages 341-348, December.
  2. Taofeek Olusola Ayinde & Olumuyiwa Ganiyu Yinusa & Yulia Rodionova, 2018. "Global and Regional Capital Mobilities in Sub-Saharan African Economies: Complement or Substitute?," SPOUDAI Journal of Economics and Business, SPOUDAI Journal of Economics and Business, University of Piraeus, vol. 68(4), pages 51-71, October-D.
  3. Awe, O. O. & Akinlana, D. M. & Yaya, O. S. & Aromolaran, O., 2018. "Time Series Analysis of the Behaviour of Import and Export of Agricultural and Non-Agricultural Goods in West Africa: A Case Study of Nigeria," AGRIS on-line Papers in Economics and Informatics, Czech University of Life Sciences Prague, Faculty of Economics and Management, vol. 10(2).
  4. Gil-Alana, Luis A. & Gupta, Rangan & Shittu, Olanrewaju I. & Yaya, OlaOluwa S., 2018. "Market efficiency of Baltic stock markets: A fractional integration approach," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 511(C), pages 251-262.
  5. Yaya OlaOluwa S., 2018. "Another Look At The Stationarity Of Inflation Rates In Oecd Countries: Application Of Structural Break-Garch-Based Unit Root Tests," Statistics in Transition New Series, Statistics Poland, vol. 19(3), pages 477-493, September.

2017

  1. Tajudeen, Egbetunda & Taofeek Olusola, Ayinde & AbdulGaniy Ademola, Balogun, 2017. "Interest Rate Liberalization, Financial Development and Economic Growth in subSaharan African Economies," African Journal of Economic Review, African Journal of Economic Review, vol. 5(2), July.
  2. Ayinde Taofeek Olusola & Adekunle Ahmed Oluwatobi, 2017. "Monetary Policy Efficiency and Inclusive Growth in Nigeria: A Dea Approach," Acta Universitatis Danubius. OEconomica, Danubius University of Galati, issue 13(6), pages 278-291, DECEMBER.
  3. Gil-Alana, Luis A. & Yaya, OlaOluwa S. & Awe, Olushina O., 2017. "Time series analysis of co-movements in the prices of gold and oil: Fractional cointegration approach," Resources Policy, Elsevier, vol. 53(C), pages 117-124.
  4. OlaOluwa Simon Yaya & Luis Alberiko Gil-Alana & Olusanya Elisa Olubusoye, 2017. "The global financial crisis: Testing For Fractional Cointegration Between The Us And Nigerian Stock Markets," Journal of Developing Areas, Tennessee State University, College of Business, vol. 51(4), pages 29-47, October-D.

2016

  1. Taofeek Olusola Ayinde & Olumuyiwa Ganiyu Yinusa, 2016. "Financial Development and Inclusive Growth in Nigeria: A Threshold Analysis," Acta Universitatis Danubius. OEconomica, Danubius University of Galati, issue 12(4), pages 326-346, October.
  2. Salisu, Afees A. & Ayinde, Taofeek O., 2016. "Modeling energy demand: Some emerging issues," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 1470-1480.
  3. Afees A. Salisu & Taofeek O. Ayinde, 2016. "Testing the Martingale Difference Hypothesis (MDH) with Structural Breaks: Evidence from Foreign Exchanges of Nigeria and South Africa," Journal of African Business, Taylor & Francis Journals, vol. 17(3), pages 342-359, September.
  4. Olusanya E. Olubusoye & OlaOluwa S. Yaya, 2016. "Time series analysis of volatility in the petroleum pricing markets: the persistence, asymmetry and jumps in the returns series," OPEC Energy Review, Organization of the Petroleum Exporting Countries, vol. 40(3), pages 235-262, September.
  5. Gil-Alana, Luis A. & Gupta, Rangan & Olubusoye, Olusanya E. & Yaya, OlaOluwa S., 2016. "Time series analysis of persistence in crude oil price volatility across bull and bear regimes," Energy, Elsevier, vol. 109(C), pages 29-37.
  6. Yaya, OlaOluwa S. & Tumala, Mohammed M. & Udomboso, Christopher G., 2016. "Volatility persistence and returns spillovers between oil and gold prices: Analysis before and after the global financial crisis," Resources Policy, Elsevier, vol. 49(C), pages 273-281.
  7. Luis A. Gil‐Alana & OlaOluwa S. Yaya & Enitan A. Solademi, 2016. "Testing unit roots, structural breaks and linearity in the inflation rates of the G7 countries with fractional dependence techniques," Applied Stochastic Models in Business and Industry, John Wiley & Sons, vol. 32(5), pages 711-724, September.

2015

  1. Yaya, OlaOluwa Simon & Gil-Alana, Luis Alberiko & Carcel, Hector, 2015. "Testing fractional persistence and non-linearities in the natural gas market: An application of non-linear deterministic terms based on Chebyshev polynomials in time," Energy Economics, Elsevier, vol. 52(PA), pages 240-245.
  2. Rangan Gupta & Luis A. Gil-Alana & Olaoluwa S. Yaya, 2015. "Do sunspot numbers cause global temperatures? Evidence from a frequency domain causality test," Applied Economics, Taylor & Francis Journals, vol. 47(8), pages 798-808, February.
  3. Ola Oluwa S. Yaya & Luis A. Gil‐Alana & Olanrewaju I. Shittu, 2015. "Fractional Integration and Asymmetric Volatility in European, American and Asian Bull and Bear Markets: Application to High‐frequency Stock Data," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 20(3), pages 276-290, July.

2014

  1. Christopher N Ekong & Usenobong F Akpan, 2014. "On Energy Subsidy Reform and Sustainable Development in Nigeria," International Journal of Management and Sustainability, Conscientia Beam, vol. 3(4), pages 186-202.
  2. Yaya, OlaOluwa S. & Gil-Alana, Luis A., 2014. "The persistence and asymmetric volatility in the Nigerian stock bull and bear markets," Economic Modelling, Elsevier, vol. 38(C), pages 463-469.
  3. Gil-Alana, Luis A. & Yaya, OlaOluwa S., 2014. "The relationship between oil prices and the Nigerian stock market. An analysis based on fractional integration and cointegration," Energy Economics, Elsevier, vol. 46(C), pages 328-333.
  4. Gil-Alana, Luis A. & Shittu, Olanrewaju I. & Yaya, OlaOluwa S., 2014. "On the persistence and volatility in European, American and Asian stocks bull and bear markets," Journal of International Money and Finance, Elsevier, vol. 40(C), pages 149-162.
  5. Gil-Alana, Luis A. & Yaya, OlaOluwa S. & Shittu, Olanrewaju I., 2014. "Global temperatures and sunspot numbers. Are they related?," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 396(C), pages 42-50.

2012

  1. Usenobong F. Akpan & Godwin E. Akpan, 2012. "The Contribution of Energy Consumption to Climate Change:A Feasible Policy Direction," International Journal of Energy Economics and Policy, Econjournals, vol. 2(1), pages 21-33.
  2. Godwin Effiong Akpan & Usenobong Friday Akpan, 2012. "Electricity Consumption, Carbon Emissions and Economic Growth in Nigeria," International Journal of Energy Economics and Policy, Econjournals, vol. 2(4), pages 292-306.

2011

  1. Chuku A. Chuku & Usenobong F. Akpan & Ndifreke R. Sam & Ekpeno L. Effiong, 2011. "Oil price shocks and the dynamics of current account balances in Nigeria," OPEC Energy Review, Organization of the Petroleum Exporting Countries, vol. 35(2), pages 119-139, June.
  2. Sheriffdeen A. Tella & Olumuyiwa G. Yinusa & Ayinde Taofeek Olusola & Saban Celik, 2011. "Global Economic Crisis And Stock Markets Efficiency: Evidence From Selected Africa Countries," Bogazici Journal, Review of Social, Economic and Administrative Studies, Bogazici University, Department of Economics, vol. 25(1), pages 139-169.

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