Search results

Numerical and analytical solutions of the carrier continuity equation are found for the problem of charge transfer in charge‐coupled devices in the presence of potential barriers. The analytical solution is for a rectangular potential barrier and is useful for obtaining a qualitative understanding of charge transfer over a potential barrier. Numerical results show that the charge transfer inefficiency is strongly affected when the shape of the potential barrier is varied and the height of the potential barrier remains fixed.

The business model of monoline insurers is to guarantee payments of debt issues in case of defaults by the issuer. Although sparse attention is given to monolines in literature, they play an important role in enabling municipalities and firms in refinancing. This study aims to conduct a systematic review of 181 articles from 1990 to 2020 from 23,130 records and a case study on the key monoline insurers. Key failure, success factors and demand for future monoline insurance are identified. Finally, the study explores monolines’ potential during COVID-19 and develops a framework for monoline governance and regulation.

The study follows Briner and Denyer and Moher et al. to implement the systematic review. The methodology involves ascertaining the motivation behind the review, and formulating research questions; aggregating relevant prior literature from scientific databases, conducting quality assessment and synthesising the data; and conducting extensive analysis for framework development. Case study methodology foundation phase focuses on understanding the research philosophy. The second phase involves documenting the procedures involved. The final phase involves collecting the relevant quantitative and qualitative material. In addition, collecting empirical data from numerous sources allows triangulation.

The review results of 181 articles from 1990 to 2020 show that peak article counts occur in 2010 and 2013 (nine academic studies) and in 2008 and 2010 (six industry studies). Over- and under-explored domains happen to be bond pricing (86 academic studies) and bond markets (36 industry studies) and corporate bonds (19 academic studies), respectively. The study highlights failure factors such as adverse selection, premiums mispricings, inadequate capital and regulation, untimely downgrades and governance issues; and identifies success factors such as conservative underwriting, early financing, competitor business acquisitions and obtaining put-back claims. Potential during COVID-19 is discussed and a monoline governance framework is developed.

Search and selection criteria distortions may lead to sample selection bias in systematic reviews. Issue is addressed by using different permutations of the search key words to refine the search criteria. Reference list of collected final sample of articles are perused to identify additional articles. It is difficult to obtain verifiable empirical data on the bond/monoline insurers or their insured products, especially for the structured finance sector. Most of the information available on data stream and firm’s quarterly financial reports for publicly traded monoline/bond insurers and credit rating reports are included to overcome this issue.

Demand for bond/monoline insurance still persists even in the USA. Although borrowing costs are low, obtaining bank loans would be challenging for municipalities and corporates with increased risks. Especially, given worldwide government stimulus on wages, most municipalities would possess reduced budgets for public finance. Monoline insurance can play a key role in financing such projects. Thus, it is important to understand their unique traditional and transformed business model and applicability during and post-COVID-19. Given the near extinction of bond/monoline insurers during the 2008 global financial crisis (GFC), an adequate framework for bond/monoline insurers as developed in this study is key for future business continuity.

There is significant interest, especially, from the industry on monolines as identified in our systematic review. Monoline insurance has major effects on taxpayers, government policies and bond investors. They aid in financing public finance projects that have significant societal impact. This study contributes by filling existing gaps in the literature, especially, from a behavioural, ethical and social perspective of the monolines, regulators, other stakeholders and new entrants to the industry during COVID-19. This study links prior finance theories to the impact of bond/monoline insurer’s during the 2008 GFC and their stakeholders involved that has societal implications.

This study can be differentiated from prior research on monoline insurers as follows: The study identifies, gaps, similarities, trends between prior academic and industry literature and develop a bond/monoline governance framework; identifies key failure and success factors during the 2008 GFC crisis to develop the governance framework and identify monolines’ potential during COVID-19; as opposed to most prior literature that only focus on one (Drake and Neal, 2011 analyse MBIA) or two key bond/monoline insurers, this study focuses on five key bond/monoline insurers in detail and all other key insurers as well in the empirical analysis section.