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All Journal ETIKONOMI Union: Jurnal Ilmiah Pendidikan Matematika
Ali, Rajib
Unknown Affiliation
Economics, Econometrics & Finance Education Mathematics

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Collaborative Online International Learning (COIL): University students’ feedback to international communication in Japan Miller, Adam L.; Ali, Rajib
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 2 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i2.19588

Abstract

Collaborative Online International Learning (COIL), has been an accessible tool for online collaboration and learning for close to 20 years. Previous papers have explored the potential benefits of this teaching approach in regards to improved language acquisition, increased cultural awareness, and the potential to enrich learning environments. The aim of this paper is to acquire feedback from university students in Japan who have completed a COIL program, to see how they perceive the experience; in so doing, it is hoped that this study can inform how Japanese university students perceive their participation in a COIL program, with a focus on its impact on intercultural communication, language development, and collaborative learning. A mixed-methods approach was employed, including a Likert-scale questionnaire and open-ended responses from 21 first-year students at a private university in Nagoya City, Japan, after completing a 7-week COIL program with a North American university.While small in scale, the study found that although some logistical and technical difficulties were raised by the students, their experience with COIL was an enjoyable and rewarding one. The study contributes to the existing literature by offering student-centered insights into COIL experiences in Japan and proposes a practical implementation model (GORMS) for future programs.
When Markets Talk: Volatility Spillovers Between the UK and China Sadhwani, Ranjeeta; Ali, Rajib; Ghumro, Niaz Hussain; Khan, Shabeer
ETIKONOMI Vol. 25 No. 1 (2026)
Publisher : Faculty of Economic and Business, Universitas Islam Negeri Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/etk.v25i1.42643

Abstract

Research Originality: This study uniquely examines spillover effects among stock returns, gold prices, and exchange rates within the UK and China, as well as between them. Research Objectives: This study aims to examine volatility spillover effects among stock, gold, and exchange rate returns within and across the UK and China. Research Method: This study exploits monthly data from January 2000 to December 2024 and employs a bivariate GARCH model to analyze cross-market and cross-border volatility spillovers. Empirical Results:  The results demonstrate significant ARCH and GARCH effects, necessitating persistent volatility in markets to be studied. No evidence of mean spillover is observed in UK markets. However, volatility spillover persists from the exchange rate to gold within the UK and China. Cross-country analysis reveals one-way mean spillover from the UK to the Chinese equity market and bidirectional volatility spillovers in exchange rates and gold. Implications: For investors and portfolio managers, deciphering volatility spillover improves diversification strategies and helps to mitigate systemic risk. JEL Classification: C32, G11, G15
Co-Authors Ghumro, Niaz Hussain Khan, Shabeer Miller, Adam L. Sadhwani, Ranjeeta