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The primary purpose of this research is to highlight the effectiveness and challenges of Online Learning (OL) for Bangladesh during COVID-19. Besides, the researchers have proposed some suggestions based on the findings of this research to overcome from those challenges. Fifteen students using purposive sampling from Bangladesh's private, public, and national universities have taken as a study sample. Researchers generated headings which will be asked to the respondents in relation to the research questions through the secondary sources (published articles, journals, reports, conference proceedings, newspapers, and government records). After that, data triangulation has been validated by the semi-structured interview of 15 students. According to the findings, online learning is now somehow effective; but, it faces several challenges in Bangladesh's educational system. The students, guardians, university authorities such as University Grant Commission (UGC) and the Ministry of Education will be benefited from these findings.  The study only looked at Bangladeshi students' viewpoints, which may or may not be similar to those of other countries. As a result, generalization of the findings is less possible; consequently, more students from other countries should be included in the future.

The issue of co-movements is still crucial and arguable in international finance. An optimum and significant level of co-movement is highly desirable to investors, and it mostly depends on investors’ decisions (behavior and psychology). We use frequency–time bands and multi-scale-based wavelet analysis to investigate the co-movement between developed and emerging countries’ stock markets for better asset allocation and portfolio diversification strategies. The results show that a significant level of co-movement is observed between conventional and Islamic stock markets in developed and emerging countries, and it varies in terms of its time–frequency domain properties. Particularly, the dependency among conventional and Islamic stock markets is strong at 4–512-band scales. However, the USA Islamic stock market illustrates a higher level of coherency with the UK, Japan and China’s Islamic stock markets, while a relatively lower level of co-movement is detected with the Chinese composite, Malaysian and Indonesian Islamic stock markets. The findings further confirm that the developed countries’ stock markets are substantially influenced by the GFC in 2007–2008 and the European debt crisis in 2012, while this trend is surprisingly not observed in the emerging markets on a similar scale. Therefore, these crises have opened the door for the grabbing of portfolio diversification benefits from the emerging countries’ stock markets. These findings give some interesting insights to policymakers, investors and fund managers for portfolio diversification and risk management strategies.

PurposeThe study aims to investigate the reasons behind the growing diverse practices of Shariah governance (SG) among Islamic banks in Bangladesh.Design/methodology/approachData has been collected through a semi-structured interview process from the concerned authorities (Shariah supervisory board members, Shariah department officers, central bank executives and banking professional experts) related to SG and Islamic banks in Bangladesh. The data has been analyzed by NVivo software.FindingsThe results of the study show that SG mechanisms are different due to the lack of unique comprehensive SG guidelines and the absence of a Centralized Shariah Supervisory Board (CSSB) under the Central Bank. The self-developed practices, the diversified opinions and viewpoints of the Board of Directors (BOD), banks' policies, business motivations and profit intention are also responsible for diversified SG practices. The diverse understandings and explanations of Shariah, Madhab (school of thought) and rulings are also responsible for the different practices of SG in Bangladesh.Research limitations/implicationsThe study has unique implications for the regulatory authorities and Islamic banks in Bangladesh. The study explored the diverse reasons for numerous applications of SG guidelines which will be beneficial for the central bank and regulators to resolve the issues by outlying unique SG guidelines.Originality/valueThis study outlines the reasons for dissimilar practices of SG by the Islamic banks in Bangladesh, which will be beneficial for Islamic banks and the central bank of Bangladesh.