Marta Sundari
Universitas Indraprasta PGRI

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Intensitas hubungan teman sebaya dengan gaya hidup hedonis siswa Della Rizki Pratami; Anna Rufaidah; Marta Sundari
Orien: Cakrawala Ilmiah Mahasiswa Vol 2, No 2 (2022)
Publisher : Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/ocim.v2i2.8126

Abstract

this study aims to determine the relationship between peer groups and the hedonic lifestyle of students. This research method uses quantitative research with the object of Class XI students. The population in this study was 148 students of Class XI and the number of samples was 108 students. The data analysis technique used is Pearson product moment correlation analysis. The data collection tool used in this study was a questionnaire or questionnaire. The Pearson product moment correlation coefficient generated in this study of 0.216 illustrates that there is a relationship with a low category between peer groups and the hedonic lifestyle of students. The Pearson product moment correlation value is greater than the rtable value of 0.189 so that Ho is rejected and Ha is accepted. The conclusion of this study is that there is a significant unidirectional relationship between peer groups and the hedonic lifestyle of students.
Analysis of Factors Affecting the Position of Indonesia's Foreign Exchange Reserves with ECM Model Pardomuan Robinson Sihombing; Luh Putu Widya Adnyani; Marta Sundari; Miftahul Huda; Syamsul Hidayat
Media Komunikasi Ilmu Ekonomi Vol 42 No 2 (2025): MELATI: Jurnal Media Komunikasi Ilmu Ekonomi Desember 2025
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Institut Teknologi dan Bisnis Ahmad Dahlan Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58906/melati.v42i2.306

Abstract

A Foreign exchange reserves are a vital instrument in maintaining Indonesia's macroeconomic stability, particularly in mitigating external turmoil and stabilizing the rupiah exchange rate. This study aims to analyze the factors that affect Indonesia's foreign exchange reserves position for the period from January 2022 to August 2025 using the Error Correction Model (ECM) method. Independent variables used include the Consumer Price Index (CPI), the rupiah exchange rate against the US dollar (IDR/$), and the policy rate (BI Rate). Data was obtained from the publication of Indonesian Economic and Financial Statistics (SEKI) of Bank Indonesia. The results of the Dickey-Fuller Augmented Stationarity test showed that all variables were stationary at the first difference, while the Engle-Granger co-integration test confirmed the existence of a long-term relationship between the variables. The results of the estimation indicate that, in the long term, no variables have a significant impact on foreign exchange reserves. However, in the short term, the exchange rate has a positive and significant influence, while the policy rate has a negative and significant effect on Indonesia's foreign exchange reserves. A value speed of adjustment indicates that short-term imbalances are corrected towards long-term equilibrium each month, indicating a swift adjustment mechanism.