Ojonugwa Usman

Ojonugwa Usman publication distribution in Economics and Finance in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Economics and Finance in 2026. The highlighted bar marks where Ojonugwa Usman sits on this spectrum.

Ojonugwa Usman D-index placement in Economics and Finance in 2026

The chart shows the D-index (discipline H-index) distribution of Economics and Finance scientists ranked by Research.com in 2026. The highlighted bar marks where Ojonugwa Usman sits on this spectrum.

Best Publications

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

  George N. Ike;Ojonugwa Usman;Samuel Asumadu Sarkodie

  269
  Citations

• Revisiting the environmental Kuznets curve (EKC) hypothesis in India: the effects of energy consumption and democracy.

  Ojonugwa Usman;Paul Terhemba Iorember;Ifedolapo O Olanipekun

  268
  Citations

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

  Ojonugwa Usman;Andrew Adewale Alola;Samuel Asumadu Sarkodie

  264
  Citations

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

  Abdulkadir Abdulrashid Rafindadi;Ojonugwa Usman

  254
  Citations

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

  Ojonugwa Usman;Seyi Saint Akadiri;Ibrahim Adeshola

  253
  Citations

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

  George N. Ike;Ojonugwa Usman;Andrew Adewale Alola;Samuel Asumadu Sarkodie

  241
  Citations

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

  Unknown

  146
  Citations

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

  Muhammad Sani Musa;Gylych Jelilov;Paul Terhemba Iorember;Ojonugwa Usman

  128
  Citations

• Effects of domestic material consumption, renewable energy, and greenhouse gas emissions on environmental sustainability in the EU-28: Evidence from GMM panel-VAR

  Ojonugwa Usman;Andrew Adewale Alola;Andrew Adewale Alola;Seyi Saint Akadiri

  127
  Citations

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

  Ojonugwa Usman;Ifedolapo O. Olanipekun;Paul Terhemba Iorember;Maryam Abu-Goodman

  126
  Citations

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

  Seyi Saint Akadırı;Andrew Adewale Alola;Ojonugwa Usman

  119
  Citations

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

  George N. Ike;Ojonugwa Usman;Samuel Asumadu Sarkodie

  111
  Citations

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

  Paul Terhemba Iorember;Gylych Jelilov;Ojonugwa Usman;Abdurrahman Işık

  101
  Citations

• 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

  Unknown

  100
  Citations

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

  Unknown

  95
  Citations

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

  Unknown

  91
  Citations

• Domestic material consumption and greenhouse gas emissions in the EU‐28 countries: Implications for environmental sustainability targets

  Andrew Adewale Alola;Seyi Saint Akadiri;Ojonugwa Usman

  88
  Citations

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

  Abdulkareem Alhassan;Ojonugwa Usman;George N. Ike;Samuel Asumadu Sarkodie

  87
  Citations

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

  Abdulkadir Abdulrashid Rafindadi;Ojonugwa Usman

  84
  Citations

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

  Ojonugwa Usman;Osama Elsalih;Osama Koshadh

  75
  Citations