https://www.journal.privietlab.org/index.php/JEBL/issue/feed 2025-09-07T15:47:41+07:00 PRIVIETLAB jebl@privietlab.org Open Journal Systems <div style="border: 2px #444F71 solid; padding: 10px; background-color: #ffde59; text-align: left;"> <ol> <li>Journal Title: <a href="https://journal.privietlab.org/index.php/JEBL">Journal of Economics and Business Letters</a></li> <li>Initials: JEBL</li> <li>Frequency: Bimonthly</li> <li>ISSN: Print 2798-8651 and Online 2798-4885</li> <li>Editor in Chief: Mochammad Fahlevi</li> <li>DOI: 10.55942</li> <li>Publisher: PRIVIETLAB</li> </ol> </div> <p style="text-align: left;"><img style="margin-left: 8px; margin-right: 15px; box-shadow: 5px 5px 5px gray; float: left;" src="https://journal.privietlab.org/public/site/images/adminj/cover-privietlab.png" alt="" width="150" height="210" /></p> <p style="text-align: justify;"><strong>JEBL: Journal of Economics and Business Letters</strong><strong> </strong>is an open access, six-annually peer-reviewed international journal published by <strong>PRIVIETLAB</strong>. It provides an avenue to academicians, researchers, managers and others to publish their research work that contributes to the knowledge and theory of Economics and Business related disciplines. <strong>JEBL</strong> is published six a year.</p> <p style="text-align: justify;"> </p> <p style="text-align: justify;"> </p> https://www.journal.privietlab.org/index.php/JEBL/article/view/423 2025-07-08T15:07:05+07:00 Mohammad Forouzandeh mohforouzandeh@gmail.com

<p>Choosing a project portfolio to improve sustainability in the supply chain is a vital issue for industries. The main goal of the portfolio is to align the organization’s strategic objectives with project selection, ensuring that these projects make a meaningful contribution to the overall sustainability of the portfolio. This research specifically examines the integration of product portfolio design and supply chain design in the construction industry. The study utilizes an analytical model and optimization techniques to propose innovative solutions aimed at enhancing the alignment between suppliers and the product portfolio. Improving the efficiency and flexibility of the supply chain is accomplished through optimal coordination of both the product portfolio and the supply chain portfolio. This research explores how supply chain networks align with the product portfolio, focusing on creating flexibility in product portfolio management processes, managing changes, and addressing variability in different characteristics. The results indicate that effective and timely integration of product portfolio design with supply chain design can lead to reduced organizational costs and increased overall productivity. Improved coordination and integration between suppliers and final products have resulted in enhanced supply chain performance and lower ongoing organizational expenses.</p>

2025-08-31T00:00:00+07:00 Copyright (c) 2025 Mohammad Forouzandeh https://www.journal.privietlab.org/index.php/JEBL/article/view/380 2025-05-03T00:51:13+07:00 Itai Muktar muktar.itai@covenantuniversity.edu.ng Ikpefan Ailemen ochei.ikpefan@covenantuniversity.edu.ng Okorie Uchechukwu uchechukwu.okorie@covenantuniveristy.edu.ng Olubuyi Timilehin timi.olubiyi@westmidlands.university

<p>This study examined the relationship between public infrastructure expenditure on information technology, electricity and economic growth using real gross domestic products as proxy. The methods of data analysis and estimation technique are Ordinary Least Square (OLS) method, Augmented Dickey Fuller (ADF) method, Unit Root Test, Johansen Co-integration Test and Error Correction Model. Data on these variables from 1981 to 2021 were sourced from the Central Bank of Nigeria Statistical Bulletin (CBN, 2021) and World Development indicators. The evidence from the long-run coefficient of public expenditure on infrastructural development has significantly impacted on economic growth, therefore infrastructure development expenditure is seen to constitute significant determinant of economic growth particularly for developing countries. The study suggested analysis of the elasticity of growth towards public expenditure on economic services and government need to take proactive and concerted effort to significantly enhance economic growth through fiscal policy targeted on sustainable economic service provision.</p>

2025-08-31T00:00:00+07:00 Copyright (c) 2025 Itai Muktar, Ikpefan Ailemen, Okorie Uchechukwu, Olubuyi Timilehin