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All Journal Jurnal Ekonomi Indonesia
Komala, Angelina
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Economics, Econometrics & Finance

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When lights tell stories: The untold economic pattern of Java island Aviliani, Avi; Kartawinata, Matthew; Herawan, Jonathan Ersten; Parningotan, Firman; Komala, Angelina
Jurnal Ikatan Sarjana Ekonomi Indonesia Vol 15 No 1 (2026): April 2026
Publisher : Jurnal Ekonomi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52813/jei.v15i1.786

Abstract

Purpose — This study evaluates the role of Nighttime Lights (NTL) as a complementary indicator of regional economic and socio-economic development across Java Island. Method — Using VIIRS NTL data for 2016–2023, the study compares radiance patterns with GRDP per capita, Human Development Index (HDI), population density, and road infrastructure across six provinces. The analysis combines spatial visualization, growth comparison, and correlation analysis. Findings — Results show that NTL effectively captures the spatial concentration and dynamics of economic activity, but its relationship with development indicators varies across regions. Strong alignment appears in highly urbanized provinces such as DKI Jakarta, while weaker or divergent patterns are observed in regions with service-based or dispersed economies.Implications — NTL can support policy analysis by revealing spatial disparities and real-time economic dynamics, but it should be used cautiously as a complementary rather than standalone indicator. Originality — This study provides a subnational, multidimensional assessment of NTL in Java, highlighting its context-dependent reliability as a proxy for development.
Price transmission in Indonesia’s CPO chain: an ARDL-UECM assessment Kartawinata, Matthew; Herawan, Jonathan Ersten; Komala, Angelina; Susilo, Yuvensius Sri; Tendenan, Vica; Brata, Aloysius Gunadi
Jurnal Ikatan Sarjana Ekonomi Indonesia Vol 15 No 1 (2026): April 2026
Publisher : Jurnal Ekonomi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52813/jei.v15i1.788

Abstract

This study analyzes price transmission along Indonesia’s cooking-oil value chain using Autoregressive Distributed Lag (ARDL) models expressed in Unrestricted Error-Correction (UECM) form, which separates short-run dynamics from long-run equilibrium relationships. Monthly data from January 2016 to May 2023 are employed, covering stable conditions as well as the 2022 cooking-oil crisis. The dataset comprises international crude palm oil (CPO) benchmark prices (deflated and JISDOR FX rate-adjusted), domestic wholesale bulk prices, and retail bulk prices, alongside policy dummies for the export-ban/DMO window and the post-2022 MGKR regime. Results reveal a sharp asymmetry between upstream and downstream stages. In the upstream link, CPO price shocks are transmitted quickly but only partially: the long-run pass-through is β = 0.420, with an immediate impact of 0.131 and a very high adjustment speed (λ = –0.639), implying a half-life of only 0.68 months. By contrast, the downstream link is characterized by amplification and sluggish adjustment. Retail prices exhibit an exaggerated long-run pass-through (β = 2.34), weak contemporaneous transmission (0.104), and slow convergence (λ = –0.143), with a half-life of 4.49 months and overshooting in lagged responses. These findings underscore the resilience of wholesale markets and the vulnerability of retail segments.
Co-Authors Aloysius Gunadi Brata Aviliani, Avi Herawan, Jonathan Ersten Kartawinata, Matthew Parningotan, Firman Tendenan, Vica Y. Sri Susilo