Yazar "Usman, Ahmed" seçeneğine göre listele

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    Analysis of asymmetries in the nexus among clean energy and environmental quality in Pakistan
    (2020) Öztürk, İlhan; Usman, Ahmed; Ullah, Sana; Chishti, Muhammad Zubair; Zafar, Syeda Maria
    This study examines the short-run and long-run asymmetric effects of clean energy consumption on carbon emission in Pakistan, over the annual time period 1975–2018, by using a non-linear ARDL approach. The findings of the study confirm the existence of asymmetries, in the nexus between the clean energy consumption and carbon emission in the short and long run. The findings of non-linear model confirm that carbon emission responded contrary to positive shocks of energy variables as compared with their negative shocks. Asymmetric findings recommend that positive and negative shocks of the alternative and nuclear energy and combustible and waste energy have affected differently. Although, short- and long-run results suggest an insignificant positive and negative relationship between electric power consumption and carbon emissions. Therefore, more taxation of non-renewable energy and clean energy supports are suggested for the Pakistan economy. We concluded that Pakistan has potential in clean energy which will improve environmental quality in the near future.
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    Does ICT have symmetric or asymmetric effects on CO2 emissions? Evidence from selected Asian economies
    (Elsevier Sci Ltd, 2021) Usman, Ahmed; Ozturk, Ilhan; Ullah, Sana; Hassan, Ali
    Information and communication technology (ICT) has played an important role in the socio-economic development of human societies but, this development has come with some potential hazards to the environment. However, the experts are divided over this issue, some consider that ICT has exerted a favorable impact on environmental quality whereas; others think that ICT has posed serious threats to the environment. Hence, this study is another effort in exploring the impacts of ICT on CO2 emissions in 9 selected Asian economies which are the top contributors in polluting the environment in the Asian continent for the period of 1990-2018. All previous studies have one thing in common that the impact of ICT on CO2 emissions is symmetric. Whereas, in this study, we have not only relied on the symmetry assumption but also tested the asymmetric impact of ICT on CO2 emissions. The number of countries in which ICT significantly affects the CO2 releases has not changed much in our linear and non-linear models. However, the short-run impact asymmetry in the effects of increased and decreased use of ICT is approved in almost half of the countries, and in long run, these asymmetric impacts further strengthened and observed in more than half of the countries.
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    Examining the asymmetric effects of globalization and tourism on pollution emissions in South Asia
    (2020) Öztürk, İlhan; Chishti, Muhammad Zubair; Ullah, Sana; Usman, Ahmed
    The asymmetrical impacts of globalization and tourism on pollution emissions of 5 South Asian countries for the period from 1980 to 2018 are examined through a non-linear autoregressive distributed lag (NARDL) technique, which shows that both short and long-run coefficients are asymmetric. The findings suggest that positive and negative shocks in globalization affect carbon emissions differently in the case of Bangladesh, India, and Pakistan, while similar results are found in the case of Nepal and Sri Lanka in the long run. Furthermore, positive tourism shock, in the long run, ameliorates the environmental quality by reducing carbon emissions in Nepal and Sri Lanka, however, increases the carbon emissions in Bangladesh, India, and Pakistan. While negative tourism shock has an adverse effect on positive shock on carbon emissions in South Asia. The phenomena of globalization and tourism can exert a severe impact in aggravating the pollution emissions that policymakers should forecast and oppose. Based on these findings, some policy suggestions are proposed for South Asian economies.
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    On the asymmetric effects of premature deindustrialization on CO2 emissions: evidence from Pakistan
    (2020) Öztürk, İlhan; Ullah, Sana; Usman, Ahmed; Majeed, Muhammad Tariq; Akhtar, Parveen
    In this modern era, environmental pollution is the biggest problem attached to industrialization. This study tries to ensure the relationship between industrialization and CO2 emissions in Pakistan for the time period 1980–2018 by using nonlinear ARDL model while controlling for urbanization, GDP, and human capital variables as a likely factor of CO2 emissions. Our foremost study objective is to examine whether or not the outcome of industrialization on CO2 emissions is symmetric or asymmetric for Pakistan that is one of the core suppliers to CO2 in South Asia, as the emissions were 0.82 million tons in 2018. Our result approves the presence of an asymmetric effect of industrialization shocks on CO2 emissions both in the short run and long run. The results reveal that industrialization increases emissions and deindustrialization decrease emissions, in short as well as long run, in Pakistan. Moreover, our finding also advises that urbanization and GDP variables have exerted a positive impact on CO2 emissions. Based on the findings, some policy suggestions are proposed for Pakistan.
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    Revealing the nexus between nuclear energy and ecological footprint in STIRPAT model of advanced economies: Fresh evidence from novel CS-ARDL model
    (Pergamon-Elsevier Science Ltd, 2022) Usman, Ahmed; Ozturk, Ilhan; Naqvi, Syed Muhammad Muddassir Abbas; Ullah, Sana; Javed, Muhammad Imran
    In recent times, a rise in anthropogenic activities has increased the demand for water, energy, infrastructure, wood, and other natural resources, which causes the climate to change, land to erode, pollution to increase, and biodiversity to decrease. We aim to investigate the impact of nuclear energy and human capital on the ecological footprint in 12 advanced economies over the period 1980-2015. We have applied the novel Cross Sectionally Augmented Auto Regressive Distributive Lag (CS-ARDL) estimation technique that can handle the issue of Cross-Sectional Dependence (CSD) and also deal with the mixture I (0) and I (1) variables. The estimate of nuclear energy is negatively significant, confirming that the use of nuclear energy can protect the environment by preserving the water, land, and forest resources and reducing the carbon footprints. Similarly, the estimated coefficient of human capital is negative and significant, which confirms that human capital can reduce the ecological footprint in advanced economies. On the other side, electricity consumption is a factor that can spur economic activity and consequently the ecological footprints. Likewise, the increased economic activity in advanced economies also exhaust resources like water, land, and forests and consequently increase ecological footprints. The results suggest that nuclear energy can prove a panacea to the problems of energy security and environmental degradation; therefore, increasing nuclear energy production should be part and parcel of energy and environmental policies of all the countries around the globe.
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    The effect of ICT on energy consumption and economic growth in South Asian economies: An empirical analysis
    (Elsevier, 2021) Usman, Ahmed; Ozturk, Ilhan; Hassan, Ali; Zafar, Syeda Maria; Ullah, Sana
    This study contributes to the literature by analyzing the effects of information and communication technology (ICT) on economic performance and energy consumption of selected South Asian economies i.e. Bangladesh, India, Pakistan and Sri Lanka for the period of 1990-2018. For empirical analysis, we employed the bounds testing approach of cointegration and error correction modelling. The findings of the study confirm that, in the long-run, ICT significantly and positively contributed to the economic growth of India only. Similarly, India is the only country in South Asia that has achieved energy efficiency as a result of increased use of ICT. However, energy consumption proved to be an important determinant of GDP per capita in India and Pakistan. Also, GDP per capita has a positive and significant impact on energy consumption in both India and Pakistan. These results imply that South Asian economies try to follow their regional partner, India, in increasing the role of ICT in their economies, which on one side will boost their economic growth and on the other side will help them in achieving energy efficiency. Moreover, the energy conservation policy could prove detrimental to South Asian economies.