Yazar "Nwani, Chinazaekpere" seçeneğine göre listele
Listeleniyor 1 - 9 / 9
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Accounting for the combined impacts of natural resources rent, income level, and energy consumption on environmental quality of G7 economies: a panel quantile regression approach(SPRINGER HEIDELBERG, TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY, 2021) Gyamfi, Bright Akwasi; Onifade, Stephen Taiwo; Nwani, Chinazaekpere; Bekun, Festus VictorAs the argument widens on the need to cut down on global carbon emissions, this study addresses environmental degradation using a combination of second-generation empirical methodologies including, quantile regression (QR), augmented mean group (AMG), fully modified ordinal least square (FMOLS), and dynamic ordinal least square (DOLS) to examine the impacts of natural resource rents alongside disaggregated energy consumption on the environmental quality of the G7 economies within the framework of the stochastic impact by regression on population, affluence, and technology (STIRPAT) model. The empirical findings reveal that the total natural resources rent indicates a positive significant relationship with pollution in all the quantiles except Q 0.05. Additionally, the findings for renewable energy consumption are adverse and significant throughout the assessed quantiles while fossil fuel energy consumption is reported to have a positive and significant effect on carbon dioxide emissions, thus, increasing environmental degradation experienced in the G7 economies. The extended findings from the Granger causality analysis also show that income levels combined with fossil fuel use have a strong effect on environmental degradation, while the total natural resources rent granger causes clean energy consumption within the G7 countries. This finding supports the assertions that natural resource revenue is mostly channeled into further productivity avenues which consequently lead to further environmental degradation. As such, while maintaining targeted revenue agenda, we strongly recommend that productivity gains from natural resource rents within the G7 economies should be harnessed for investment in clean energy for a more sustainable environment.Öğe Boosting Energy Efficiency in Turkey: The Role of Public-Private Partnership Investment(MDPI, ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND, 2023) Balcilar, Mehmet; Uzuner, Gizem; Nwani, Chinazaekpere; Bekun, Festus VictorThis study draws motivation from the United Nations Sustainable Development Goals (7.8.11), which highlight pertinent issues across the globe, among which are access to energy, responsible consumption, and sustainable development. To this end, we explored the pivotal role of public–private partnerships (PPP) investment in energy in Turkey, which is currently on an aggressive trajectory for its energy mix to energy efficiency. To avoid omitted variable bias in econometric strategies, we controlled for vital macroeconomic indicators such as foreign direct investment (FDI), trade flow, and economic growth. Empirical results showed a long-run equilibrium relationship between the outlined variables as traced by the autoregressive distributed lag (ARDL) bounds test. Subsequently, we observed a positive relationship between public–private partnership (PPP) investment in energy and the country’s energy intensification in both the short and long runs. A similar trend was observed between FDI, GDP growth, and energy intensity. These outcomes have inherent policy caveats for the Turkish energy sector and economic trajectory. Policy implications include efficient investment in clean energy (renewables) as part of Turkey’s effort toward energy intensification to guarantee sustainable development. Additionally, the involvement of PPP is a welcome dimension for sustainable economic growth. Further insights are documented in the concluding remarks.Öğe Discerning the role of renewable energy and energy efficiency in finding the path to cleaner consumption and production patterns: New insights from developing economies(PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND, 2022) Shahbaz, Muhammad; Nwani, Chinazaekpere; Bekun, Festus Victor; Gyamfi, Bright Akwasi; Agozie, Divine Q.This study provides empirical evidence on the relationship between energy efficiency and production- andconsumption based carbon emissions by assessing the impact of population size, income, and clean energy on the carbon dioxide (CO2) emissions function. Method of Moments Quantile Regression (MM-QR) and Augmented Mean Group (AMG) estimators are applied to observe long-term associations between the variables, and Dumitrescu-Hurlin (DH) Ganger causality test is used to identify the direction of causality. Findings reveal that, across all specifications, energy intensity and population size have positive (increasing) impact on both estimates of CO2 emissions while renewable energy use has a negatively significant impact and stronger on consumptionbased estimates. The presence of an inverted U-shaped curve in the relationship between per capita income and CO2 emissions, as predicted by the Environment Kuznets curve (EKC) hypothesis, only exists when CO2 emissions are calculated based on production pattern. Further empirical analysis based on DH causality tests show a bidirectional causality between energy intensity and production-based CO2 emissions, population size and consumption-based CO2 emissions, per capita income and consumption-based CO2 emissions, and energy intensity and renewable energy use. In addition, a unidirectional causality runs from per capita income to production-based CO2 emissions, and from energy intensity and renewable energy use to consumption-based CO2 emissions. This analysis outlines a paradigm for the formulation of a green development strategy in developing economies via energy and environmental resources.Öğe Effect of Battery Electric Vehicles on Greenhouse Gas Emissions in 29 European Union Countries(MDPI, ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND, 2021) Fuinhas, Jose Alberto; Koengkan, Matheus; Leitao, Nuno Carlos; Nwani, Chinazaekpere; Uzuner, Gizem; Dehdar, Fatemeh; Relva, Stefania; Peyerl, DrielliThis analysis explored the effect of battery electric vehicles (BEVs) on greenhouse gas emissions (GHGs) in a panel of twenty-nine countries from the European Union (EU) from 2010 to 2020. The method of moments quantile regression (MM-QR) was used, and the ordinary least squares with fixed effects (OLSfe) was used to verify the robustness of the results. The MM-QR support that in all three quantiles, economic growth causes a positive impact on GHGs. In the 50th and 75th quantiles, energy consumption causes a positive effect on GHGs. BEVs in the 25th, 50th, and 75th quantiles have a negative impact on GHGs. The OLSfe reveals that economic growth has a negative effect on GHGs, which contradicts the results from MM-QR. Energy consumption positively impacts GHGs. BEVs negatively impacts GHGs. Although the EU has supported a more sustainable transport system, accelerating the adoption of BEVs still requires effective political planning to achieve net-zero emissions. Thus, BEVs are an important technology to reduce GHGs to achieve the EU targets of decarbonising the energy sector. This research topic can open policy discussion between industry, government, and researchers, towards ensuring that BEVs provide a climate change mitigation pathway in the EU region.Öğe Industrial output, services and carbon emissions: the role of information and communication technologies and economic freedom in Africa(Springer, 2023) Nwani, Chinazaekpere; Bekun, Festus Victor; Agboola, Phillips O.; Omoke, Philip C.; Effiong, Ekpeno L.This study examines the impact of industrial structure on carbon dioxide (CO2) emissions with emphasis on the activities of secondary and tertiary industries and the role of information and communication technologies and economic freedom. We focus on explaining consumption-based and territorial-based CO2 emissions in a selection of African economies over the period 1995-2017, accounting for possible heterogeneity in the distribution of both measures of CO2 emissions using the Method of Moments Quantile Regression approach for handling fixed effects in panel quantile models. The results show that (i) industrial output increase territorial-based CO2 emissions and have stronger impact in countries with more extractive industries; (ii) services reduce consumption-based CO2 emissions and the impact is significant across the entire quantile distribution; (iii) the use of fixed (wired) and analogue telephone technologies increases consumption-based and territorial-based CO2 emissions and the impact is stronger at the upper quantile distribution; (iv) the use of mobile telephone and internet technologies reduces consumption-based and territorial-based CO2 emissions and the impact is stronger at the upper quantile distribution; (v) increased economic freedom decreases territorial-based CO2 emissions and the impact is stronger at the upper quantile distribution. Overall, our findings highlight the role of mobile telephone and internet penetration, restructuring towards service-based economy and economic freedom in promoting cleaner production and sustainable consumption patterns in African economies.Öğe Natural resources, technological innovation, and eco-efficiency: striking a balance between sustainability and growth in Egypt(Springer, 2023) Nwani, Chinazaekpere; Ullah, Assad; Ojeyinka, Titus Ayobami; Iorember, Paul Terhemba; Bekun, Festus VictorStriking a balance between economic growth and environmental protection remains a crucial component of the sustainable development agenda. This study defines economic efficiency using an ecological efficiency approach, which measures the overall economic output generated per global hectare of ecological productive resources utilized. Examining the Egyptian economy from 1980 to 2018, the study investigates two prominent trends: the decreasing reliance on natural resource rents and the increasing growth of technological innovation. By employing the autoregressive distributed lag (ARDL) bounds test, the presence of cointegration is confirmed in all models, indicating that the variables converge in the long run. Additionally, the Spectral Granger-causality test is used to determine the causality direction across the permanent, intermediate, and temporary frequency domains. The results indicate that oil, coal, and natural gas impede eco-efficiency in Egypt, and the causality is unidirectional in the medium and long term, running from economic dependence on their extraction to eco-efficiency. As for the impact of technological innovation, the long-term analysis demonstrates that both domestically created and foreign (transferred) innovations significantly enhance eco-efficiency. The causality is unidirectional as well, with innovation leading to improvements in the eco-efficiency indicator. The study concludes that technological innovation offers essential economic and environmental benefits necessary for building an eco-efficient economy in Egypt. As a result, the study puts forth several policy recommendations aimed at facilitating well-informed decision-making.Öğe Responding to the environmental efects of remittances and trade liberalization in net‑importing economies: the role of renewable energy in Sub‑Saharan Africa(SPRINGER, ONE NEW YORK PLAZA, SUITE 4600 , NEW YORK, NY 10004, UNITED STATES, 2022) Nwani, Chinazaekpere; Alola, Andrew Adewale; Omoke, Chimobi Philip; Adeleye, Bosede Ngozi; Bekun, Festus VictorLittle is currently known about how policy choices that seek to bridge the gap between low production capacity and growing consumption demands in developing economies impact the environment. To address this research gap, a quantile-based model is used to examine the impact of three policy-relevant variables on carbon dioxide (CO2) emissions: international remittance infows, trade liberalization, and renewable energy consumption. Territorial-based CO2 emissions are used to explain the environmental efects of the variables when emissions are calculated solely on the basis of domestic production capacity. To consider if trade-induced consumption demands provide a better measure for assessing the environmental efects of the variable, consumption-based CO2 emissions are used. The study focused on SubSaharan African countries with zero or net positive CO2 emissions from trade. The results show, among other things, that remittances and trade liberalization increase CO2 emissions irrespective of the accounting method. Trade, in particular, has a stronger efect through import-induced consumption activities. However, the efect is statistically insignifcant for the lower quantile countries and statistically signifcant for the middle and upper quantile countries. Harnessing the potential of renewable energy to reduce CO2 emissions should thus be a priority for policymakers in net-importing developing economies if production and consumption activities are to be created in less carbon-intensive ways.Öğe Technological pathways to decarbonisation and the role of renewable energy: A study of European countries using consumption-based metrics(Elsevier Sci Ltd, 2023) Nwani, Chinazaekpere; Usman, Ojonugwa; Okere, Kingsley Ikechukwu; Bekun, Festus VictorTo decarbonise Europe in the post-COP26 era, current policies must be adjusted to account for the cross-border consequences of its consumption pattern. Using consumption-based Kaya identity metrics adjusted for emissions and energy embodied in traded goods and services, this study examines the nexus between technological factors defining energy transition progress, specifically energy and carbon intensities of the consumption mix, and carbon dioxide (CO2) emissions, in a sample of 20 European countries from 1995 to 2019. The empirical steps rely on panel-data estimators that are robust to cross-sectional dependence and allow for heterogeneous slope coefficients. The results show that energy and carbon intensities of the consumption mix have a positive relationship with CO2 emissions but a negative relationship with renewable energy consumption. The findings also verify an inverted U-shaped relationship between affluence and CO2 emissions through the energy and carbon intensity metrics. Additional tests show a unidirectional causality from carbon intensity of the energy mix to CO2 emissions and from renewable energy to the carbon intensity. Also, bidirectional causality exists between CO2 emissions and per capita GDP and energy intensity, and between renewable energy and energy intensity. By implication, renewable energy provides the technological path to mitigating consumption-induced emissions in Europe.Öğe Toward sustainable use of natural resources: Nexus between resource rents, affluence, energy intensity and carbon emissions in developing and transition economies(WILEY, 111 RIVER ST, HOBOKEN 07030-5774, NJ, 2023) Nwani, Chinazaekpere; Bekun, Festus Victor; Gyamfi, Bright A.; Effiong, Ekpeno L.; Alola, Andrew A.Sustainable use of natural resources would entail ensuring that derived economic benefits today do not undermine the welfare of generations to come. On this basis, this study examines the nexus between natural resource rents and carbon dioxide (CO2) emissions disaggregated into production and consumption-based (i.e., trade-adjusted) CO2 emissions for a selected panel of 45 developing and transition economies over the period 1995-2017. The empirical model also incorporates the impacts of population, affluence, and energy intensity. The results show that affluence increases production-based CO2 emissions by 1.407%, with the EKC's predicted inverted U-shaped curve only explaining consumption-based CO2 emissions. Economic reliance on natural resource rents and energy intensification contribute 0.022% and 0.766%, respectively, to CO2 emissions embedded in territorial production inventories and 0.035% and 0.583%, respectively, to CO2 emissions embedded in consumption inventories. The bootstrap non-causality test shows that historical data on each variable has significant predictive power for future CO2 emissions from both sources. The historical information about natural resource rents has significant predictive power over the future levels of affluence and energy intensity. Clearly, the results show that the environmental impact of natural resource rents is stronger when CO2 emissions are adjusted for trade and varies among the countries, with Bangladesh, Guinea, India, Malaysia, Mexico, Nigeria, Pakistan, Saudi Arabia, Vietnam, and Zimbabwe among the most affected countries. Overall, this study provides motivation for policies to keep the use of natural resources within sustainable limits.