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All Journal AL-FALAH : Journal of Islamic Economics Jurnal Riset Ilmu Ekonomi
Tubagus Thresna Irijanto
Unknown Affiliation
Religion Economics, Econometrics & Finance

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Peran Investasi, Utang Luar Negeri, dan Inflasi Bagi Pertumbuhan Ekonomi Indonesia Tubagus Thresna Irijanto; Dheany Mega Lestari
Jurnal Riset Ilmu Ekonomi Vol. 2 No. 1 (2022): Jurnal Riset Ilmu Ekonomi (JRIE) Edisi April 2022
Publisher : Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jrie.v2i1.26

Abstract

This study aims to explain the influence of variable foreign debt, foreign investment, domestic investment and inflation on Indonesia's economic growth. Researchers observed research variables in the period 1994-2018 with variables of economic growth as dependent variables. In this study, researchers used cross-section data processed by the Error Correction Model (ECM) method. Based on the results of the ECM method, research researchers can explain the influence of variables on a holistic scale in the long and short term. The results of the study explain that in the long run, economic growth can be positively affected by foreign debt significantly. But on the other hand, in the short term, the results of research show that domestic investment and foreign debt both have a significant positive influence on economic growth. From these results, there are differences in the influence of independent variables in each time period. Although there are differences in the influence of independent variables on each time period, but researchers concluded that from the results of processing data variables foreign debt is equally a significant positive effect on national economic growth.
ROA Performance Evaluation: Is Islamic Banking More Resilient to Crises Than Conventional Banking? Tarishah Putri Arini; Tubagus Thresna Irijanto; Noraziah Che Arshad
AL-FALAH : Journal of Islamic Economics Vol. 11 No. 1 (2026)
Publisher : Institut Agama Islam Negeri (IAIN) Curup

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29240/alfalah.v11i1.16296

Abstract

Purpose: This study aims to analyze and compare profitability resilience between Islamic and mainstream banking institutions in Indonesia during the COVID-19 pandemic. It tests the hypothesis regarding the resilience of the Islamic banking system based on profit-and-loss-sharing principles. Design/Method/Approach: Using Return on Assets (ROA) as the primary indicator, the research analyzes quarterly data from the three largest banks in each group (conventional: Bank Mandiri, BRI, BCA; Islamic: BSI, CIMB Niaga Syariah, BTN Syariah) for the 2018–2024 period. Correlation analysis is employed to assess the relationship between the two systems' performance. Findings: While conventional banks consistently had a significantly higher average ROA, Islamic banks demonstrated better relative resilience post- crisis. This is reflected in a greater increase in ROA (+0.222 points vs +0.066 points) and a reduction in performance volatility. Further correlation analysis revealed a decoupling phenomenon or separation in the movement of ROA between the two systems, indicating distinct recovery paths and risk characteristics. Originality/Values: The findings highlight conventional banks' advantage in absolute profitability while confirming the structural resilience of Islamic banking in the face of external shocks. The identification of a decoupling phenomenon in ROA movements offers new insight into the distinct recovery dynamics and risk profiles of Islamic versus conventional banking systems during a major crisis.
Co-Authors Dheany Mega Lestari Noraziah Che Arshad Tarishah Putri Arini