Asst. Prof. OJONUGWA USMAN

1. Tariffs and the transition: A study on the effects of global trade on energy mix diversification

Soto G. H., Zambrano-Monserrate M. A., USMAN O.

Energy Policy , vol.210, 2026 (SCI-Expanded, SSCI, Scopus)

2. Warming up the assets: Modelling the role of global warming on green financial assets under bearish, normal and bullish market conditions

USMAN O., Ozkan O., Alola A. A., İke G.

Energy Strategy Reviews , vol.63, 2026 (SCI-Expanded, Scopus)

3. Analyzing the response of energy and major financial assets to global financial risks: a time-quantile analysis in a volatile global environment

Adebayo T. S., Zambrano-Monserrate M. A., Özkan O., USMAN O.

Finance Research Letters , vol.86, 2025 (SSCI, Scopus)

4. Time and quantile persistence and efficiency of clean, green, and sustainable markets

Özkan O., Akadiri S. S., Alola A., USMAN O.

Letters in Spatial and Resource Sciences , vol.18, no.1, 2025 (ESCI, Scopus)

5. Spillover network of tourism stocks, metaverse, artificial intelligence, and traditional assets: Do oil-related and volatility shocks matter?

Özkan O., USMAN O., Komba A. L., Ike G. N.

Tourism Economics , vol.31, no.7 Special Focus: Big Data as a source for verifying theories in tourism economics, pp.1471-1479, 2025 (SSCI, Scopus)

6. Examining the asymmetric role of economic complexity, resource efficiency, and renewable energy on consumption-based CO2 emissions in China

Ozkan O., USMAN O., Akadiri S. S.

Energy , vol.336, 2025 (SCI-Expanded, Scopus)

7. The asymmetric effect of household and commercial energy efficiency on U.S. energy-related CO2 emissions

USMAN O., TERHEMBA İOREMBER P., Ozkan O., Alola A. A.

Innovation and Green Development , vol.4, no.5, 2025 (Scopus)

8. The Asymmetric Role of Resource Efficiency and Alternative Energy on Load Capacity Factor in India

Ozkan O., Adeshola I., USMAN O., Adebayo T. S.

Environmental Quality Management , vol.35, no.1, 2025 (Scopus)

9. Economic Growth Effects of Energy Infrastructure and Human Capital in a Resource-Rich Nation: Accounting for the Moderating Role of Oil Price Uncertainty

Adamu A. B., Obansa J. S., Iorember P. T., USMAN O.

International Journal of Energy Economics and Policy , vol.15, no.4, pp.472-480, 2025 (Scopus)

10. Analysing the nexus between clean energy expansion, natural resource extraction, and load capacity factor in China: a step towards achieving COP27 targets

USMAN O., Ozkan O., Adeshola I., Eweade B. S.

Environment, Development and Sustainability , vol.27, no.6, pp.12583-12604, 2025 (SCI-Expanded, Scopus)

11. A global shift: How modern technologies are powering the energy transition in the face of climate change

Balcilar M., Özkan O., USMAN O., Akadırı S. S., Zambrano-Monserrate M. A.

Journal of Environmental Management , vol.384, 2025 (SCI-Expanded, Scopus)

12. Role of fourth industrial revolution on dirty and clean energy under bearish, neutral and bullish market conditions: A quantile-on-quantile Granger causality approach

USMAN O., Ibrahim B., Ozkan O., Ike G. N.

Energy , vol.322, 2025 (SCI-Expanded, Scopus)

13. Drivers of eco-efficiency and the criticality of environmental policy stringency in OECD countries

Satrovic E., USMAN O., Alola A. A.

Journal of Cleaner Production , vol.496, 2025 (SCI-Expanded, Scopus)

14. Oil price movements and agricultural production from heterogeneous sub-sectors: Analysing the Dutch disease in an African resource-rich economy

Ike G. N., USMAN O., KÖKSAL C.

Natural Resources Forum , vol.49, no.1, pp.6-28, 2025 (SCI-Expanded, SSCI, Scopus)

15. Global Energy Market Uncertainty and Exchange Rate Pass-Through to Food Inflation

Balcilar M., Usman O.

Energy Research Letters , vol.6, pp.1-5, 2025 (Scopus)

16. Greening the citizenship: role of social media in promoting environmental engagement

Ibrahim B., USMAN O., OLASEHINDE WILLIAMS G. O., GÖRENER A.

Global Knowledge, Memory and Communication , 2025 (ESCI, Scopus)

17. Can household energy efficiency dampen crude oil price volatility in the United States?

USMAN O., Ozkan O., Nwani C., BEKUN F. V., Alola A. A.

PLoS ONE , vol.20, no.1 January, 2025 (SCI-Expanded, Scopus)

18. Is AI cable news-based economic policy uncertainty predicting travel and leisure stock returns in the USA, EU, and China?

Bai Y., USMAN O., Ozkan O.

Current Issues in Tourism , vol.28, no.17, pp.2733-2743, 2025 (SSCI, Scopus)

19. US Economic Policy Uncertainty and the Exchange Market Pressure of Large Emerging-Market Economies: Evidence From GETS-VAR and Bayesian Quantile Regression Methods

Güngör H., OLANIPEKUN I. O., OLASEHINDE WILLIAMS G. O., USMAN O.

International Journal of Finance and Economics , 2025 (SSCI, Scopus)

20. Fossil fuel efficiency as a pathway to decarbonisation and the role of international trade: A perspective of the LCC hypothesis

Ozkan O., Iormom B. I., USMAN O., Uzuner G.

Environment, Development and Sustainability , 2025 (SCI-Expanded, Scopus)

21. Time and Quantile Response of Energy and Precious Metals Commodities to Cable News-Based Economic Policy Uncertainty

Ozkan O., Alola A. A., USMAN O.

Energy Research Letters , vol.6, no.5, 2025 (Scopus)

22. Energy-related uncertainty shocks and inflation dynamics in the U.S: A multivariate quantile-on-quantile regression approach

USMAN O., Ozkan O., KOY A., Adebayo T. S.

Structural Change and Economic Dynamics , vol.71, pp.235-247, 2024 (SSCI, Scopus)

23. Global liquidity effect of quantitative easing on emerging markets

Balcilar M., USMAN O., Wohar M., Roubaud D., Gungor H.

Empirical Economics , vol.67, no.6, pp.2449-2461, 2024 (SSCI, Scopus)

24. Economic development and energy consumption in Saudi Arabian economy: do globalization, financial development and capital accumulation matter?

Rafindadi A. A., Isah A. B., USMAN O.

International Journal of Energy Sector Management , vol.18, no.6, pp.1423-1443, 2024 (ESCI, Scopus)

25. The role of environmental innovation on ecologic footprint in nations with high technology exports concentrations in international trade

Ersin Ö. Ö., Ustabaş A., Usman O.

Technological Forecasting and Social Change , vol.208, 2024 (SSCI, Scopus) Sustainable Development

26. Digitalization and the environment: The role of information and communication technology and environmental taxes in European countries

Adeshola I., USMAN O., Agoyi M., Awosusi A. A., Adebayo T. S.

Natural Resources Forum , vol.48, no.4, pp.1088-1108, 2024 (SCI-Expanded, SSCI, Scopus)

27. Dynamic connectedness of clean energy markets, green markets, and sustainable markets: The role of climate policy uncertainty

Ozkan O., Sunday Adebayo T., USMAN O.

Energy , vol.303, 2024 (SCI-Expanded, Scopus)

28. Foreign direct investment and ecological efficiency in Pakistan: a new perspective on the pollution haven hypothesis

Özkan O., OLASEHINDE WILLIAMS G. O., USMAN O.

International Journal of Environmental Science and Technology , vol.21, no.13, pp.8403-8416, 2024 (SCI-Expanded, Scopus)

29. Stock Returns, Crude Oil and Gold Prices in Turkey: Evidence from Rolling Window-Based Nonparametric Quantile Causality Test

Pata U. K., USMAN O., OLASEHINDE WILLIAMS G. O., Ozkan O.

Asia-Pacific Financial Markets , vol.31, no.3, pp.779-797, 2024 (ESCI, Scopus)

30. Nonlinear network connectedness: Assessing financial risk transmission in MENA and influence of external financial conditions

Balcilar M., USMAN O., Duman G. M.

Emerging Markets Review , vol.62, 2024 (SSCI, Scopus)

31. Does geopolitics trigger energy inflation in the European economic area? Evidence from a panel time-varying regression

OLASEHINDE WILLIAMS G. O., Olanipekun I., USMAN O.

International Journal of Energy Sector Management , vol.18, no.5, pp.941-955, 2024 (ESCI, Scopus)

32. The time-frequency-quantile causal impact of Cable News-based Economic Policy Uncertainty on major assets returns

Adebayo T. S., Özkan O., Sofuoğlu E., Usman O.

INVESTMENT ANALYSTS JOURNAL , vol.0, no.0, 2024 (SSCI, Scopus)

33. Effect of exchange rate uncertainty, energy prices and sectoral spending on agriculture value added, household consumption, and domestic investment

Iorember P. T., Mohamed Yusoff N. Y., Abachi P. T., USMAN O., Alola A. A.

Heliyon , vol.10, no.9, 2024 (SCI-Expanded, Scopus)

34. Global evidence of multi-dimensional asymmetric effect of energy storage innovations on environmental quality: Delineating the role of natural resources, nuclear energy and oil consumption

USMAN O., Ozkan O., Ike G. N.

Journal of Cleaner Production , vol.451, 2024 (SCI-Expanded, Scopus)

35. Assessing the impact of resource efficiency, renewable energy R&D spending, and green technologies on environmental sustainability in Germany: Evidence from a Wavelet Quantile-on-Quantile Regression

Ozkan O., Eweade B. S., USMAN O.

Journal of Cleaner Production , vol.450, 2024 (SCI-Expanded, Scopus)

36. Role of household energy efficiency in shaping policy directives toward clean electricity transition in the United States: A nonparametric multivariate QQR approach

USMAN O., Nwani C., Ozkan O.

Sustainable Energy Technologies and Assessments , vol.64, 2024 (SCI-Expanded, Scopus)

37. Energy security-related risks and the quest to attain USA’s net-zero emissions targets by 2050: a dynamic ARDL simulations modeling approach

USMAN O., Ozkan O., Alola A. A., Ghardallou W.

Environmental Science and Pollution Research , vol.31, no.12, pp.18797-18812, 2024 (SCI-Expanded, Scopus)

38. Dampening energy security-related uncertainties in the United States: The role of green energy-technology investment and operation of transnational corporations

USMAN O., Iorember P. T., Ozkan O., Alola A. A.

Energy , vol.289, 2024 (SCI-Expanded, Scopus)

39. On the connectedness of commodity markets: A critical and selective survey of empirical studies and bibliometric analysis

Balcilar M., USMAN O., Agan B.

Journal of Economic Surveys , vol.38, no.1, pp.97-136, 2024 (SSCI, Scopus)

40. Modelling asymmetries among consumer price index, currency price, gross domestic output and aggregate import demand in an emerging economy: the case of Nigeria

Iormom B. I., Usman O., Bature B. N., Ogba L. J.

SN Business & Economics , vol.4, no.35, pp.1-27, 2024 (Peer-Reviewed Journal)

41. Tourism development and U.S energy security risks: a KRLS machine learning approach

Balcilar M., USMAN O., Özkan O.

Current Issues in Tourism , vol.27, no.1, pp.37-44, 2024 (SSCI, Scopus)

42. House price connectedness and consumer sentiment in an era of destabilizing macroeconomic conditions: Empirical evidence from Türkiye

Balcılar M., USMAN O., Yülek M., Ağan B., Erdal B.

Borsa Istanbul Review , vol.24, no.1, pp.14-34, 2024 (SSCI, Scopus)

43. Modelling the air pollution induced health effects of energy consumption across varied spaces in OECD countries: An asymmetric analysis

Ike G. N., Obieri O. C., USMAN O.

Journal of Environmental Management , vol.349, 2024 (SCI-Expanded, Scopus)

44. Material productivity and material intensity as drivers of environmental sustainability in G-7 economies

ÇELİK A., USMAN O., Alola A. A.

International Journal of Sustainable Development and World Ecology , vol.31, no.1, pp.43-56, 2024 (SCI-Expanded, Scopus)

45. Global evidence on the energy–environment dilemma: the role of energy-related uncertainty across diverse environmental indicators

Ozkan O., USMAN O., Eweade B. S.

International Journal of Sustainable Development and World Ecology , vol.31, no.8, pp.1128-1144, 2024 (SCI-Expanded, Scopus)

46. Effect of domestic material production on environmental sustainability in EU countries under changing financial development: a dynamic panel threshold regression approach

USMAN O., Iorember P. T., Alola A. A., BEKUN F. V.

Environment, Development and Sustainability , 2024 (SCI-Expanded, Scopus)

47. Is pass-through of the exchange rate to restaurant and hotel prices asymmetric in the US? Role of monetary policy uncertainty

Alola U. V., Usman O., Alola A. A.

Financial Innovation , vol.9, no.1, 2023 (SSCI, Scopus)

48. Symmetric and asymmetric GARCH estimations of the impact of oil price uncertainty on output growth: evidence from the G7

Alao R. O., Alhassan A., Alao S., Olanipekun I. O., Olasehinde-Williams G. O., USMAN O.

Letters in Spatial and Resource Sciences , vol.16, no.1, 2023 (ESCI, Scopus)

49. The making-or-breaking of material and resource efficiency in the Nordics

Alola A. A., ÇELİK A., Obekpa H. O., USMAN O., Echebiri C.

Cleaner and Responsible Consumption , vol.11, 2023 (Scopus)

50. Inbound tourism demand elasticities of MENA countries: the role of internal and external conflicts

USMAN O., Alola A. A., Ike G.

International Journal of Emerging Markets , vol.18, no.10, pp.4690-4706, 2023 (SSCI, Scopus) Sustainable Development

51. Oil price movements and agricultural production from heterogeneous sub-sectors: Analysing the Dutch disease in an African resource-rich economy

Ike G., Usman O., Köksal C.

NATURAL RESOURCES FORUM , vol.1, no.1, pp.1-23, 2023 (SCI-Expanded, SSCI, Scopus)

52. Moving towards the path of environmental sustainability in Developing-8 countries: investigating the role of country’s reputation in mitigating environmental externalities

Adikpo J. A., USMAN O.

Environmental Science and Pollution Research , vol.30, no.50, pp.109784-109799, 2023 (SCI-Expanded, Scopus)

53. Towards low carbon and sustainable environment: does income inequality mitigate ecological footprints in Sub-Saharan Africa?

Gimba O. J., Alhassan A., Ozdeser H., Ghardallou W., Seraj M., USMAN O.

Environment, Development and Sustainability , vol.25, no.9, pp.10425-10445, 2023 (SCI-Expanded, Scopus)

54. Reconsidering the environmental Kuznets curve, pollution haven, and pollution halo hypotheses with carbon efficiency in China: A dynamic ARDL simulations approach

Ozkan O., Coban M. N., Iortile I. B., USMAN O.

Environmental Science and Pollution Research , vol.30, no.26, pp.68163-68176, 2023 (SCI-Expanded, Scopus)

55. Investigating the nexus between economic complexity and energy-related environmental risks in the USA: Empirical evidence from a novel multivariate quantile-on-quantile regression

Ozkan O., Haruna R. A., ALOLA A. A., Ghardallou W., USMAN O.

Structural Change and Economic Dynamics , vol.65, pp.382-392, 2023 (SSCI, Scopus) Sustainable Development

56. Technological pathways to decarbonisation and the role of renewable energy: A study of European countries using consumption-based metrics

Nwani C., USMAN O., Okere K. I., BEKUN F. V.

Resources Policy , vol.83, 2023 (SSCI, Scopus)

57. Asymmetric effect of environmental cost of forest rents in the Guinean forest-savanna mosaic: The Nigerian experience

USMAN O., Alola A. A., Usman M., Uzuner G.

Environmental Science and Pollution Research , vol.30, no.17, pp.50549-50566, 2023 (SCI-Expanded, Scopus) Sustainable Development

58. Investing green for sustainable development without ditching economic growth

Balcilar M., USMAN O., Ike G. N.

Sustainable Development , vol.31, no.2, pp.728-743, 2023 (SSCI, Scopus) Sustainable Development

59. Examining crude oil price outlook amidst substitute energy price and household energy expenditure in the USA: A novel nonparametric multivariate QQR approach

Alola A. A., Özkan O., USMAN O.

Energy Economics , vol.120, 2023 (SSCI, Scopus)

60. Operational behaviours of multinational corporations, renewable energy transition, and environmental sustainability in Africa: Does the level of natural resource rents matter?

Balcilar M., USMAN O., Ike G. N.

Resources Policy , vol.81, 2023 (SSCI, Scopus) Sustainable Development

61. Role of Non-Renewable Energy Efficiency and Renewable Energy in Driving Environmental Sustainability in India: Evidence from the Load Capacity Factor Hypothesis

Alola A. A., Özkan O., USMAN O.

Energies , vol.16, no.6, 2023 (SCI-Expanded, Scopus)

62. Are impacts of renewable energy and globalization on carbon neutrality targets asymmetric in South Africa? A reconsideration using nonlinear ARDL approach

Abu-Goodman M., Güngör H., USMAN O.

Environmental Science and Pollution Research , vol.30, no.9, pp.23736-23746, 2023 (SCI-Expanded, Scopus)

63. Renewable energy and CO2 emissions in G7 countries: does the level of expenditure on green energy technologies matter?

USMAN O.

Environmental Science and Pollution Research , vol.30, no.10, pp.26050-26062, 2023 (SCI-Expanded, Scopus)

64. How do environmental taxes influence the effect of tourism on environmental performance? Evidence from EU countries

USMAN O., Alola A. A.

Current Issues in Tourism , vol.26, no.24, pp.4034-4051, 2023 (SSCI, Scopus) Sustainable Development

65. MODELING THE ASYMMETRIC EFFECTS OF EXCHANGE RATE, FINANCIAL DEVELOPMENT, AND OIL PRICES ON ECONOMIC GROWTH

Appiah M., Gyamfi B. A., USMAN O., BEKUN F. V.

Singapore Economic Review , 2023 (SSCI, Scopus)

66. Revisiting the electricity consumption-led growth hypothesis: is the rule defied in France?

Rafindadi A. A., Aliyu I. B., USMAN O.

Journal of Economic Structures , vol.11, no.1, 2022 (Scopus)

67. An examination of the pass-through of disaggregated energy prices to real house price: Evidence from the United States

UZUNER G., USMAN O., Alola A. A.

Journal of Public Affairs , vol.22, no.4, 2022 (ESCI, Scopus)

68. Examining the Interaction Effect of Control of Corruption and Income Level on Environmental Quality in Africa

USMAN O., Iorember P. T., Ozturk I., BEKUN F. V.

Sustainability (Switzerland) , vol.14, no.18, 2022 (SCI-Expanded, SSCI, Scopus)

69. Modelling the economic and social issues related to environmental quality in Nigeria: the role of economic growth and internal conflict

USMAN O.

Environmental Science and Pollution Research , vol.29, no.26, pp.39209-39227, 2022 (SCI-Expanded, Scopus)

70. A path towards carbon mitigation amidst economic policy uncertainty in BRICS: an advanced panel analysis

Ali S., Jiang J., Ahmad M., USMAN O., Ahmed Z.

Environmental Science and Pollution Research , vol.29, 2022 (SCI-Expanded, Scopus) Sustainable Development

71. Effects of domestic material consumption, renewable energy, and financial development on environmental sustainability in the EU-28: Evidence from a GMM panel-VAR

USMAN O., Alola A. A., Akadiri S. S.

Renewable Energy , vol.184, pp.239-251, 2022 (SCI-Expanded, Scopus)

72. Impact of international trade, energy consumption and income on environmental degradation in Africa's OPEC member countries

Iorember P. T., Gbaka S., Jelilov G., Alymkulova N., USMAN O.

African Development Review , vol.34, 2022 (SSCI, Scopus) Sustainable Development

73. Towards mitigating ecological degradation in G-7 countries: accounting for economic effect dynamics, renewable energy consumption, and innovation

USMAN O., Iorember P. T., Jelilov G., Isik A., Ike G. N., Sarkodie S. A.

Heliyon , vol.7, no.12, 2021 (ESCI, Scopus)

74. Modelling the effect of energy consumption on different environmental indicators in the United States: The role of financial development and renewable energy innovations

USMAN O., Alola A. A., Ike G. N.

Natural Resources Forum , vol.45, no.4, pp.441-463, 2021 (SCI-Expanded, SSCI, Scopus)

75. Conflicts and ecological footprint in MENA countries: implications for sustainable terrestrial ecosystem

USMAN O., Rafindadi A. A., Sarkodie S. A.

Environmental Science and Pollution Research , vol.28, no.42, pp.59988-59999, 2021 (SCI-Expanded, Scopus)

76. Effects of tourism, financial development, and renewable energy on environmental performance in EU-28: does institutional quality matter?

Musa M. S., Jelilov G., Iorember P. T., USMAN O.

Environmental Science and Pollution Research , vol.28, no.38, pp.53328-53339, 2021 (SCI-Expanded, Scopus)

77. Role of global, regional, and advanced market economic policy uncertainty on bond spreads in emerging markets

Balcilar M., USMAN O., Gungor H., Roubaud D., Wohar M. E.

Economic Modelling , vol.102, 2021 (SSCI, Scopus)

78. Exchange rate and oil price pass-through in the BRICS countries: Evidence from the spillover index and rolling-sample analysis

Balcilar M., USMAN O.

Energy , vol.229, 2021 (SCI-Expanded, Scopus)

79. Moving out of the linear rut: A period-specific and regime-dependent exchange rate and oil price pass-through in the BRICS countries

Balcilar M., Roubaud D., USMAN O., Wohar M. E.

Energy Economics , vol.98, 2021 (SSCI, Scopus)

80. Exchange rate pass-through to restaurant and hotel prices in the United States: The role of energy prices and tourism development

USMAN O., Iorember P. T., Jelilov G.

Journal of Public Affairs , vol.21, no.2, 2021 (ESCI, Scopus)

81. Testing the environmental Kuznets curve with structural breaks: the role of globalization, energy use, and regulatory quality in South Africa

Güngör H., Abu-Goodman M., Olanipekun I. O., USMAN O.

Environmental Science and Pollution Research , vol.28, no.16, pp.20772-20783, 2021 (SCI-Expanded, Scopus) Sustainable Development

82. Domestic material consumption and greenhouse gas emissions in the EU-28 countries: Implications for environmental sustainability targets

Alola A. A., Akadiri S. S., USMAN O.

Sustainable Development , vol.29, no.2, pp.388-397, 2021 (SSCI, Scopus)

83. The influence of renewable energy use, human capital, and trade on environmental quality in South Africa: multiple structural breaks cointegration approach

Iorember P. T., Jelilov G., USMAN O., Işık A., Celik B.

Environmental Science and Pollution Research , vol.28, no.11, pp.13162-13174, 2021 (SCI-Expanded, Scopus)

84. Modeling the Effects of Agricultural Innovation and Biocapacity on Carbon Dioxide Emissions in an Agrarian-Based Economy: Evidence From the Dynamic ARDL Simulations

Ali A., Usman M., USMAN O., Sarkodie S. A.

Frontiers in Energy Research , vol.8, 2021 (SCI-Expanded, Scopus)

85. Does the pass-through of exchange rate and globalization validate the rockets and feathers hypothesis in Nigeria? Evidence from a nonlinear model

USMAN O.

Journal of Public Affairs , vol.21, no.1, 2021 (ESCI, Scopus)

86. Energy mix outlook and the EKC hypothesis in BRICS countries: a perspective of economic freedom vs. economic growth

Akadırı S. S., Alola A. A., USMAN O.

Environmental Science and Pollution Research , vol.28, no.7, pp.8922-8926, 2021 (SCI-Expanded, Scopus)

87. Toward sustainable electricity consumption in Brazil: the role of economic growth, globalization and ecological footprint using a nonlinear ARDL approach

Rafindadi A. A., USMAN O.

Journal of Environmental Planning and Management , vol.64, no.5, pp.905-929, 2021 (SSCI, Scopus)

88. Testing the environmental Kuznets curve hypothesis: the role of energy consumption and democratic accountability

Güngör H., Olanipekun I. O., USMAN O.

Environmental Science and Pollution Research , vol.28, no.2, pp.1464-1478, 2021 (SCI-Expanded, Scopus)

89. Testing the asymmetric effects of exchange rate pass-through in BRICS countries: Does the state of the economy matter?

Balcilar M., Roubaud D., USMAN O., Wohar M. E.

World Economy , vol.44, no.1, pp.188-233, 2021 (SSCI, Scopus)

90. Testing the nexus between stock market returns and inflation in Nigeria: Does the effect of COVID-19 pandemic matter?

Jelilov G., Iorember P. T., USMAN O., Yua P. M.

Journal of Public Affairs , vol.20, no.4, 2020 (ESCI, Scopus)

91. Democracy and tourism demand in European countries: does environmental performance matter?

USMAN O., BEKUN F. V., Ike G. N.

Environmental Science and Pollution Research , vol.27, no.30, pp.38353-38359, 2020 (SCI-Expanded, Scopus)

92. Environmental performance and tourism development in EU-28 Countries: the role of institutional quality

USMAN O., Elsalih O., Koshadh O.

Current Issues in Tourism , vol.23, no.17, pp.2103-2108, 2020 (SSCI, Scopus) Sustainable Development

93. Impact assessment of trade on environmental performance: accounting for the role of government integrity and economic development in 79 countries

Alhassan A., USMAN O., Ike G. N., Sarkodie S. A.

Heliyon , vol.6, no.9, 2020 (ESCI, Scopus)

94. Role of renewable energy and globalization on ecological footprint in the USA: implications for environmental sustainability

USMAN O., Akadiri S. S., Adeshola I.

Environmental Science and Pollution Research , vol.27, no.24, pp.30681-30693, 2020 (SCI-Expanded, Scopus) Sustainable Development

95. Environmental quality effects of income, energy prices and trade: The role of renewable energy consumption in G-7 countries

Ike G. N., USMAN O., Alola A. A., Sarkodie S. A.

Science of the Total Environment , vol.721, 2020 (SCI-Expanded, Scopus)

96. Assessment of the role of renewable energy consumption and trade policy on environmental degradation using innovation accounting: Evidence from the US

USMAN O., Alola A. A., Sarkodie S. A.

Renewable Energy , vol.150, pp.266-277, 2020 (SCI-Expanded, Scopus)

97. Enhancing sustainable electricity consumption in a large ecological reserve–based country: the role of democracy, ecological footprint, economic growth, and globalisation in Brazil

USMAN O., Iortile I. B., Ike G. N.

Environmental Science and Pollution Research , vol.27, no.12, pp.13370-13383, 2020 (SCI-Expanded, Scopus)

98. Testing the role of oil production in the environmental Kuznets curve of oil producing countries: New insights from Method of Moments Quantile Regression

Ike G. N., USMAN O., Sarkodie S. A.

Science of the Total Environment , vol.711, 2020 (SCI-Expanded, Scopus)

99. Modelling environmental degradation in South Africa: the effects of energy consumption, democracy, and globalization using innovation accounting tests

USMAN O., Olanipekun I. O., Iorember P. T., Abu-Goodman M.

Environmental Science and Pollution Research , vol.27, no.8, pp.8334-8349, 2020 (SCI-Expanded, Scopus) Sustainable Development

100. Fiscal policy and CO2 emissions from heterogeneous fuel sources in Thailand: Evidence from multiple structural breaks cointegration test

Ike G. N., USMAN O., Sarkodie S. A.

Science of the Total Environment , vol.702, 2020 (SCI-Expanded, Scopus)

101. The long-run and short-run exchange rate pass-through during the period of economic reforms in Nigeria: Is it complete or incomplete?

Balcilar M., USMAN O., Musa M. S.

Romanian Journal of Economic Forecasting , vol.23, no.1, pp.151-172, 2020 (SSCI, Scopus)

102. Globalization, energy use, and environmental degradation in South Africa: Startling empirical evidence from the Maki-cointegration test

Rafindadi A. A., USMAN O.

Journal of Environmental Management , vol.244, pp.265-275, 2019 (SCI-Expanded, Scopus)

103. An investigation of the post-privatization firms’ financial performance in Nigeria: the role of corporate governance practices

USMAN O., Yakubu U. A.

Corporate Governance (Bingley) , vol.19, no.3, pp.404-418, 2019 (Scopus)

104. Revisiting the environmental kuznets curve (EKC) hypothesis in india: The effects of energy consumption and democracy

USMAN O., Iorember P. T., Olanipekun I. O.

Environmental Science and Pollution Research , vol.26, no.13, pp.13390-13400, 2019 (SCI-Expanded, Scopus)

105. Revisiting the Exchange Rate Pass-Through to Inflation in Africa’s Two Largest Economies: Nigeria and South Africa

Balcilar M., USMAN O., Agbede E. A.

African Development Review , vol.31, no.2, pp.245-257, 2019 (SSCI, Scopus)

106. Testing the effects of real exchange rate pass-through to unemployment in Brazil

USMAN O., Elsalih O. M.

Economies , vol.6, no.3, 2018 (Scopus)

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