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Sihotang, Jusmer
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ANALISIS PENGARUH PENGELUARAN PEMERINTAH, PENANAMAN MODAL DALAM NEGERI, DAN PENANAMAN MODAL ASING TERHADAP PRODUK DOMESTIK BRUTO DI INDONESIA PERIODE 2000–2020 Tamba, Andrean V.; Purba, Martin Luter; Sihotang, Jusmer
Jurnal KAFEBIS Vol. 1 No. 1 (2023): Jurnal Kajian Fenomena Ekonomi & Bisnis
Publisher : Universitas HKBP Nommensen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51622/kafebis.v1i1.2008

Abstract

The aim of this research is to elucidate the influence of government expenditure, domestic investment, and foreign investment on the Gross Domestic Product (GDP) in Indonesia. This research employs an explanatory research type, utilizing a quantitative approach with secondary data. The focus of this research is the development of the Gross Domestic Product in Indonesia from 2000 to 2020. Linear multiple regression analysis is utilized for data analysis in this study. The result of the F-test indicates that government expenditure, domestic investment, and foreign investment collectively significantly affect Indonesia's Gross Domestic Product. Partially, government expenditure, domestic, and foreign investments have a positive impact on GDP; however, only government expenditure exerts a positive effect, while domestic and foreign investments have a negative influence. Based on these data analyses, the government should pay more attention to the realization of government expenditure to exert a more notable effect on the Gross Domestic Product, and also maintain the stability of investment, both domestic and foreign, to support future government planning with the available capital.
COVID-19 and Monetary Policy Responses Purba, Martin Luter; Sihotang, Jusmer; Sitinjak, Ruth Betaria; Lumban Gaol, Vebry M; Nopeline, Nancy
Law and Economics Vol. 20 No. 1 (2026): February: Law and Economics
Publisher : Institute for Law and Economics Studies

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/laweco.v20i1.259

Abstract

The COVID-19 pandemic has profoundly impacted the world economy, especially Indonesia, causing substantial fluctuations in essential macroeconomic indices such as economic growth, inflation, and financial markets. In response, Bank Indonesia executed a series of monetary policy modifications, chiefly by augmenting the money supply to guarantee liquidity and stabilize the economy. The efficacy of monetary policy transmission during extraordinary crises is debatable due to structural changes and increased uncertainty. This study seeks to analyze the dynamic relationships between money supply, inflation, and economic growth in Indonesia from 2013 to 2024, specifically contrasting patterns before and during the pandemic. The study utilizes a quantitative methodology, specifically the Vector Autoregression (VAR) model and Granger causality tests, to ascertain the direction and magnitude of correlations among variables. The results aim to deliver empirical evidence about the effectiveness of monetary policy in alleviating economic disruptions during health emergencies, so providing significant policy recommendations for central banks encountering analogous issues in the future
Determinants of Indonesian Coffee Production and Consumption in the Domestic Market Sihotang, Jusmer; Nopeline, Nancy; Purba, Martin Luther; Siallagan, Hamonangan; Lumban Toruan, Vincentius Mikael
Jurnal Ekuilnomi Vol. 8 No. 1 (2026): Ekuilnomi Vol 8(1), Feb 2026
Publisher : Program Studi Ekonomi Pembangunan Fakultas Ekononomi Universitas Simalungun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36985/jdmhmy71

Abstract

This study aims to analyze: (1) the effect of producer coffee prices, cocoa producer prices, coffee plantation area, export prices, and Indonesia’s coffee exports on Indonesian coffee production; and (2) the effect of consumer coffee prices, tea prices, granulated sugar prices, real GDP per capita, and imported coffee prices on Indonesian coffee consumption. The research model employs a multiple linear regression model using data from 2010–2023. The findings indicate that simultaneously, producer coffee prices, cocoa producer prices, coffee plantation area, export prices, and coffee exports significantly affect Indonesian coffee production. Individually, producer coffee prices and plantation area have a significant positive effect, while cocoa producer prices and export prices have a significant negative effect on coffee production. However, coffee exports have a negative but insignificant effect. Indonesian coffee production is responsive to changes in plantation area but not responsive to changes in producer coffee prices, cocoa prices, export prices, or export volume. Simultaneously, consumer coffee prices, tea prices, sugar prices, real GDP per capita, and import coffee prices significantly affect Indonesian coffee consumption. Individually, only real GDP per capita has a significant positive effect on coffee consumption. Consumer coffee prices and sugar prices have a negative but insignificant effect, while tea prices and import coffee prices have a positive but insignificant effect. Indonesian coffee consumption is responsive to changes in real GDP per capita but not responsive to price changes
Co-Authors Elvis Fresly Purba Gea, Putri Angeline Hamonangan Siallagan Laoli, Clear Rita Lastri Lastri, Lastri Lumban Gaol, Vebry Lumban Toruan, Vincentius Mikael Nainggolan, Ellen Angelina Nopeline, Nancy Purba, Elvis F Purba, Martin Luter Purba, Martin Luther Sibarani, Vanessa Clara Simanjuntak, Agus Nakkok simanjuntak, Maria wati Simatupang, Feby C. Sitanggang, Orlando Sitinjak, Ruth Betaria Tamba, Andrean V. Tampubolon, Novianti Thabita, Viona Nadya Tongam Sihol Nababan