Research Publications Authored by SLIIT Staff
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This collection includes all SLIIT staff publications presented at external conferences and published in external journals. The materials are organized by faculty to facilitate easy retrieval.
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Publication Open Access Poultry consumption and sustainability: Assessing economic, trade, and climatic impacts across diverse income economies(Elsevier Ltd, 2025-10-31) Sammani, I; Yeshini, B; Siriwardhane, S; Pasindu, K; Jayathilaka, RPoultry consumption has increased significantly throughout the world, driven by shifts in economic, trade and dietary factors. This study explores the impact of per capita gross domestic product, trade openness, average surface temperature, beef, pork, sheep, goat, and other meat consumption on poultry consumption in the top 10 countries from each income group. Secondary data for 40 countries were incorporated from Our World in Data, from 2000 to 2021. The Panel regression technique was conducted, which applied Pooled ordinary least squares, fixed effect, and random effect models. The findings indicated that per capita gross domestic product and average surface temperature significantly impact poultry consumption. In contrast, trade openness and sheep and goat consumption significantly negatively impact all 40 countries. In high-income countries, trade openness, average surface temperature, and pork consumption have a positive effect, while other meat consumption negatively impacts poultry consumption. Average surface temperature has shown a notable positive impact, whereas trade openness negatively impacts poultry consumption in upper-middle-income countries. Pork consumption has shown a considerable positive impact in lower-middle and low-income countries.Publication Open Access Economic and trade determinants of carbon emissions in the American region(Elsevier, 2025-06) Methmini, D; Dharmapriya, N; Edirisinghe, S; Gunawardena, V; Jayathilaka, R; Wickramaarachchi, C; Dharmasena, TBalancing economic growth with sustainability has been a significant challenge over the past decades, largely due to the environmental damage caused by carbon emissions. This study investigates the relationship between energy consumption, gross domestic product (GDP), and trade openness and their impact on carbon emissions in 28 countries in the American region from 2000 to 2022. Using a multiple linear regression model for country-level analysis, the findings reveal diverse trends across the region. For instance, countries such as Antigua and Barbuda, Bolivia, Brazil, Chile, and Guatemala demonstrate a strong link between economic growth and increased carbon emissions. In contrast, developed nations such as the United States and Canada show signs of decoupling GDP growth from emissions, supporting the Environmental Kuznets Curve hypothesis, which suggests that higher income levels lead to reduced environmental degradation. The study highlights the importance of tailored, country-specific strategies to reduce emissions while promoting sustainable economic growth. A thorough understanding of the complex relationships between gross domestic product, energy consumption, trade openness, and carbon emissions will enable policymakers to devise strategies that balance ecological sustainability with socio-economic objectives.Publication Open Access Gross domestic product and logistics performance index drive the world trade: A study based on all continents(Public Library of Science, 2021-03-03) Jayathilaka, R; Jayawardhana, C; Embogama, N; Jayasooriya, S; Karunarathna, N; Gamage, T; Kuruppu, NThe purpose of this study was to examine the impact of Gross Domestic Product (GDP) and Logistics Performance Index (LPI) on international trade of nations across each continent and worldwide. Secondary data collected on 142 countries—37 Asian, 41 European, 41 African, 3 Oceania, 14 Middle East, 11 North American and 9 South American–were analysed across the years 2007, 2010, 2012, 2014, 2016, and 2018. Panel regression technique was applied and the random effect (RE) model was chosen based on the results of the Hausman tests and Breusch–Pagan Lagrange Multiplier test. The findings revealed that the LPI has a positive relationship with net exports globally and specifically within the continents of Asia, Europe, and Oceania. Moreover, while the GDP appears to have a significant negative impact on net exports, specifically within Asia, in contrast, countries in Oceania and the Middle East present a positive relationship. Also on the African continent, GDP has a significant negative impact on the net exports. Findings provide a holistic picture of the impact of LPI & GDP on net exports, which will assist governments in the formulation and revision of its strategies and policies to expedite the growth of exports and in turn, the economy. This study was the first of its kind to explore the impact of GDP and LPI on international trade of nations across worldwide.