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We present an approach for pricing American put options with a regime-switching volatility. Our method reveals that the option price can be expressed as the sum of two components: the price of a European put option and the premium associated with the early exercise privilege. Our analysis demonstrates that, under these conditions, the perpetual put option consistently commands a higher price during periods of high volatility compared to those of low volatility. Moreover, we establish that the optimal exercise boundary is lower in high-volatility regimes than in low-volatility regimes. Additionally, we develop an analytical framework to describe American puts with an Erlang-distributed random-time horizon, which allows us to propose a numerical technique for approximating the value of American puts with finite expiry. We also show that a combined approach involving randomization and Richardson extrapolation can be a robust numerical algorithm for estimating American put prices with finite expiry.

Identifying the flow regime is a prerequisite for accurately modeling two-phase flow. This paper aims to introduce a comprehensive data-driven workflow for flow regime identification.

A numerical two-phase flow model was validated against experimental data and was used to generate dynamic pressure signals for three different flow regimes. First, four distinct methods were used for feature extraction: discrete wavelet transform (DWT), empirical mode decomposition, power spectral density and the time series analysis method. Kernel Fisher discriminant analysis (KFDA) was used to simultaneously perform dimensionality reduction and machine learning (ML) classification for each set of features. Finally, the Shapley additive explanations (SHAP) method was applied to make the workflow explainable.

The results highlighted that the DWT + KFDA method exhibited the highest testing and training accuracy at 95.2% and 88.8%, respectively. Results also include a virtual flow regime map to facilitate the visualization of features in two dimension. Finally, SHAP analysis showed that minimum and maximum values extracted at the fourth and second signal decomposition levels of DWT are the best flow-distinguishing features.

This workflow can be applied to opaque pipes fitted with pressure sensors to achieve flow assurance and automatic monitoring of two-phase flow occurring in many process industries.

This paper presents a novel flow regime identification method by fusing dynamic pressure measurements with ML techniques. The authors’ novel DWT + KFDA method demonstrates superior performance for flow regime identification with explainability.

Start-ups are successful in receiving valuation in billions of US dollars prior to initial public offering (IPO). However, to sustain higher valuation, the stocks need to perform consistently after the IPO. Short-run stock performance of India-based start-ups during the first year of IPO listing from March 2021 to March 2022 is analysed.

The paper deals with the new generation start-ups' stock performance in emerging market in terms of total and abnormal return generated in comparison to the market (NIFTY-200). Further, the volatility of returns during bear and bull regimes is analysed through a family of Markov-switching GARCH models using both normal and skewed distributions.

The results suggest that start-up stocks are more volatile during bear regime than in the bull run in market-based economies where price limit policy does not apply. Besides, the cumulative abnormal return over the market return was lower for majority of start-up IPO stocks.

Though negative returns of the start-up stocks during the first year of IPO need not be surprising, higher volatility during bear regime is a matter of concern as it could severely impact retail investors and founders. The results hold implication for IPO regulation in emerging markets and for retail investors desirous of investing in start-up stocks.

Volatility of return is examined using a state-space model during the first year of the start-up IPO listing. The study contributes to the emerging market IPO literature by examining IPO performance in market-based economy. Previous IPO performance studies in emerging markets are predominantly based on ecosystems where start-ups are subjected to price limit policy, and it does not reflect the true nature of IPO performance across emerging markets.

Concerns on money laundering (ML) and terrorist financing increased, as ML accounted 2%–5% of the global GDP, with Switzerland, the USA, Canada, India and Russia having high laundering rates. Banks were fined over US$320bn in 2008, but money laundering still accounted for 3.6% of global GDP in 2009, thereby indicating the need for effective regimes. Therefore, this study aims to critically analyze the antimoney laundering (AML)/CFT regime of Somalia, identify loopholes in the regime, raise awareness and propose recommendations for regime improvement.

The qualitative research approach is used to compare Somalia’s AML/CFT regime with the corresponding regime of Malaysia through the black letter method combined with document analysis. Malaysia is selected as a benchmark for two reasons: firstly, it is an Islamic country like Somalia, and secondly, Malaysia has complied with integrity-related standards.

This study revealed that an impactful AML/CTF regime is reached by closing loopholes in the law, reevaluating and improving regulatory agencies and measures, facilitating formal financial services and collaborating with regional and international standard setters. According to the results, Somalia AML/CFT regime is counterproductive in criminalizing offenses; regulating digital currencies and mobile money, disclosures and nonfinancial business and provisions; and governing training requirements for regulatory agencies and financial institutions.

To the best of the author’s knowledge, this paper is the first of its kind in the study of Somalia’s regime building. Also, this study incorporates rich scholarly discourse on effective regime building.

Might the impact of the financial stress on exchange markets be asymmetric and exposed to regime changes? Departing from the existing literature, highlighting that the domestic and foreign financial stress in terms of money market have substantial effects on exchange market, this paper aims to investigate the impacts of the bond yield spreads of three emerging countries (Mexico, Russia, and South Korea) on their exchange market pressure indices using monthly observations for the period 2010:01–2019:12. Additionally, the paper analyses the impact of bond yield spread of the US on the exchange market pressure indices of the three mentioned emerging countries. The authors hypothesized whether the negative and positive changes in the bond yield spreads have varying effects on exchange market pressure indices.

To address the research question, we measure the bond yield spread of the selected countries by using the interest rate spread between 10-year and 3-month treasury bills. At the same time, the exchange market pressure index is proxied by the index introduced by Desai et al. (2017). We base the empirical analysis on nonlinear vector autoregression (VAR) models and an asymmetric quantile-based approach.

The results of the impulse response functions indicate that increases/decreases in the bond yield spreads of Mexico, Russia and South Korea raise/lower their exchange market pressure, and the effects of shocks in the bond yield spreads of the US also lead to depreciation/appreciation pressures in the local currencies of the emerging countries. The quantile connectedness analysis, which allows for the role of regimes, reveals that the weights of the domestic and foreign bond yield spread in explaining variations of exchange market pressure indices are higher when exchange market pressure indices are not in a normal regime, indicating the role of extreme development conditions in the exchange market. The quantile regression model underlines that an increase in the domestic bond yield spread leads to a rise in its exchange market pressure index during all exchange market pressure periods in Mexico, and the relevant effects are valid during periods of high exchange market pressure in Russia. Our results also show that Russia differs from Mexico and South Korea in terms of the factors influencing the demand for domestic currency, and we have demonstrated the role of domestic macroeconomic and financial conditions in surpassing the effects of US financial stress. More specifically, the impacts of the domestic and foreign financial stress vary across regimes and are asymmetric.

This study enriches the literature on factors affecting the exchange market pressure of emerging countries. The results have significant economic implications for policymakers, indicating that the exchange market pressure index may trigger a financial crisis and economic recession.

Our paper studies a central issue with a long history in economics: the relationship between population and economic growth. We analyze the joint dynamics of economic and demographic growth in 111 countries during the period 1960–2019.

Using the concept of economic regime, the paper introduces the notion of distance between the dynamical paths of different countries. Then, a minimal spanning tree (MST) and a hierarchical tree (HT) are constructed to detect groups of countries sharing similar dynamic performance.

The methodology confirms the existence of three country clubs, each of which exhibits a different dynamic behavior pattern. The analysis also shows that the clusters clearly differ with respect to the evolution of other fundamental variables not previously considered [gross domestic product (GDP) per capita, human capital and life expectancy, among others].

Our results indirectly suggest the existence of dynamic interdependence in the trajectories of economic growth and population change between countries. It also provides evidence against single-model approaches to explain the interdependence between demographic change and economic growth.

We introduce a methodology that allows for a model-free topological and hierarchical description of the interplay between economic growth and population.

The purpose of this article is twofold. First, this study characterises the current state of the bio-packaging market's development. Second, it identifies key factors influencing and possible scenarios of the bio-packaging market transition to increase the market share of compostable packaging.

The results of 29 in-depth interviews (IDIs) with representatives of the key groups of bio-packaging supply chains' (SCs') stakeholders were the input for the consideration of the research problem.

The main economic, legal, social and technological enablers and barriers to the bio-packaging regime transition are recognised, and their impact at the market level is explained. The authors recognised the hybrid transition scenario towards an increase in the market share of compostable packaging related to the three traditional pathways of transformation, reconfiguration and technological substitution.

This study contributes to a better understanding of the socio-technical system theory by examining interdependencies between landscape (external environment), market regime (bio-packaging market) and niche innovations (compostable packaging) as well as system transition pathways. The findings and conclusions on bio-packaging market developments can be important lessons learnt to be applied in different countries due to the same current development stage of the compostable packaging lifecycle worldwide.

This study aims to test the dynamic impact of public debt and economic growth on newly democratized African countries (South Africa and Namibia) and compare the findings with those of newly democratized European countries (Germany and Ukraine) during the period 1990–2022.

The methodology involves three stages: identifying the appropriate transition variable, assessing the linearity between public debt and economic growth and selecting the order m of the transition function. The linearity test helps identify the nature of relationships between public debt and economic growth. The wild cluster bootstrap-Lagrange Multiplier test is used to evaluate the model’s appropriateness. All these tests would be executed using the Lagrange Multiplier type of test.

The results signify the policy switch, as the authors find that the relationship between public debt and economic growth is characterized by two transitions that symbolize that the current stage of the relationship is beyond the U-shape; however, an S-shape. The results show that for newly democratized African countries, the threshold during the first waves was 50% of GDP, represented by a U-shape, which then transits to an inverted U-shape with a threshold of 65% of GDP. Then, for the European case, it was 60% of GDP, which is now 72% of GDP.

The findings suggest that an escalating level of public debt has a negative impact on economic growth; therefore, it is important to implement fiscal discipline, prioritize government spending and reduce reliance on debt financing. This can be achieved by focusing on revenue generation, implementing effective taxation policies, reducing wasteful expenditures and promoting investment and productivity-enhancing measures.

The legal profession is vulnerable to abuse for the purposes of money laundering and terrorist financing. According to the Financial Action Task Force (FATF), that vulnerability justified updated global recommendations that urge countries to require lawyers, notaries and other independent legal professionals – including sole practitioners, partners and employed professionals within law firms – to identify, assess and manage the money laundering and terrorist financing risks associated with their services and to ensure that they have appropriate mechanisms in place to provide risk assessment information to competent authorities. Those recommendations proved contentious, with concerns raised by both legal academics and legal professional bodies about the implications of certain aspects of the requirements for the principle of lawyer–client confidentiality. Despite those concerns, many countries have introduced or amended regulatory regimes to extend their application to the legal sector to comply with the FATF’s standards. The purpose of this paper is to contribute to the debate surrounding the extension of AML/CTF obligations to the legal profession.

This paper considers three jurisdictions – the UK, Israel and Australia – at different stages in their journey towards compliance with the FATF’s anti-money laundering (AML) and counter-terrorist financing (CTF) standards for the legal profession. While the UK has a long-established and well-embedded AML regulatory framework for legal professionals, Australia remains non-compliant with the FATF standards. Israel occupies a position between these two ends of the spectrum: following criticism of the omission of lawyers from its AML/CTF regime, Israel implemented due diligence rules for the profession. In 2018, Israel was found to be partially compliant with the relevant FATF recommendations.

It argues that although there are challenges involved, there are also important benefits. Therefore, Australia should act to implement its proposed changes sooner rather than later. Its persistent failure to appropriately address globally recognised areas of vulnerability leaves Australia open to integrity abuse. In addition, if the government delays addressing this issue until pressure from the FATF (such as deadlines for compliance and, if necessary, a finding of non-compliance) forces it to comply, this may tarnish Australia’s reputation, threaten its access to international financial markets and adversely affect the legitimacy and effectiveness of its AML/CTF regime.

Originality in this context refers to the distinctiveness and uniqueness of a paper’s content and approach. In this case, the originality lies in the fact that there is no other existing paper that addresses the topic of three common-law jurisdictions at various stages of their progression towards aligning with the FATF AML/CTF standards, specifically within the context of the legal profession. Furthermore, the timeliness of this paper is underscored by the fact that multiple jurisdictions are currently deliberating their positions on the focus of this paper. This adds to its originality and relevance, as it addresses a gap in the literature while also contributing to the ongoing discourse surrounding compliance with FATF’s standards.

The purpose of this paper is to discuss how agency conflicts between people and main government organs affect the combatting ability of white-collar money laundering in an emerging economy.

This paper uses a qualitative design under the philosophy of interpretivism. The case study research strategy is used inductively to investigate how structural limitations affect white-collar money laundering.

This study reveals that serious agency conflicts exist between public and main government organs which are detrimental to the rights of people to enjoy a crime-free society. First agency conflict of people and legislature intensifies as a result of limited understanding of the legislature and failure to take precautionary actions to develop an anti-money laundering and countering the financing of terrorism (AML/CFT) regime with evolving global standards. This delay has resulted in identifying Sri Lanka as a deficient AML/CFT regime twice. The second conflicts arise between people and the executive which is a serious conflict due to misuse of statutory power and failure to perform duties. The independence and integrity of administrative authorities who perform executive functions were inherent problems of implementing a sound AML/CFT regime. Lack of monitoring, nonavailability of an independent audit and inappropriate reporting channels were other encouraging factors of administrative organs to misuse statutory power. The third conflict between people and the judiciary was not intensified because the function was not so exposed to create agency conflicts. After all, an adequate number of cases had not proceeded to the judiciary due to inherent limitations as a result of intensified first two agency conflicts. The agency conflicts have intensified over the years and AML/CFT regime has been ineffective as a result of limited influence and understanding of the principal, people. Therefore, the principal has to influence the agents to make reforms in the AML/CFT regime to make the country a white-collar crime-free country.

This study uses a case study strategy to assess the context of Sri Lanka as an emerging economy. It is recommended to take into consideration the contextual facts when the findings are applied to other jurisdictions.

This paper is an original work of the authors which discusses how agency conflicts arise between people and three main government organs in implementing a sound AML/CFT regime in Sri Lanka as an emerging economy.