Journal Articles

Permanent URI for this collectionhttps://mro.massey.ac.nz/handle/10179/7915

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Author: search.filters.author.Yuen MKStart date: 2023

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    Shadow economy and energy efficiency: utilising goal programming for sustainability assessment
    (Springer Science+Business Media, LLC, 2025-08-07) Alharbi SS; Boubaker S; Ngo T; Yuen MK
    This paper combined different methods of operations research, goal programming, and unsupervised machine learning into a single framework to examine energy efficiency across the globe. Using the latest data from 131 countries in 2017, our empirical findings reveal different patterns of energy efficiency among countries and country groups under both the meta-frontier and group-frontiers. We found an inequality in production technology for many countries, which made it difficult for them to improve their energy efficiency. Importantly, our analysis also reveals that the size of the shadow economy has a small but negative impact on energy efficiency. Consequently, we suggest that governments should (i) pay more attention to the shadow economy, (ii) increase investments in education and human capital, and (iii) strengthen their institutions.
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    In the heat of the moment, secrets will out: Oil price uncertainty and firm green innovation disclosure
    (Elsevier Inc, 2025-03) Huang K; Chi J; Liao J; Yuen MK
    This study investigates the relationship between oil price uncertainty and corporate green innovation disclosure behaviour. Drawing on a textual analysis of annual reports and social responsibility reports of Chinese listed companies, we construct a measure for the intensity of corporate green innovation disclosure. We find a significantly positive relationship between oil price volatility and the level of green innovation disclosure. This relationship remains robust after conducting robustness tests and addressing potential endogeneity. Further analysis reveals that this positive association is moderated by several firm-level factors, including environmental performance, legitimacy demands, and political connections. Additionally, the positive relationship is more pronounced in firms subject to higher regional environmental regulation intensity and market-based green initiatives. Our findings contribute new evidence to corporate sustainable development, demonstrating that energy uncertainty significantly influences information transparency in green innovation disclosure.
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    Healthcare expenditure and bank deposits
    (Elsevier, 2023-10-01) Srivastava N; Tripe D; Yuen MK
    This paper investigates the effects of healthcare expenditure on bank deposits in a cross- country analysis. We use government healthcare expenditure, and government and compulsory contributions to the healthcare system as a proxy for healthcare development. The results show a positive relationship between healthcare expenditure and bank deposits. This result is stronger in high income countries and those with a high level of healthcare infrastructure. The results are robust with various specifications tests, including in the COVID-19 pandemic period.