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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.

Our goals were to explore the pedagogies applied by instructors that supported Black, Indigenous and People of Color (BIPOC) student learning in a leadership course and the leadership behaviors BIPOC students identified as being applicable after the course.

Through survey research and qualitative data analysis, three prominent themes emerged.

High-quality, purposeful pedagogy created opportunities for students to learn. Second, a supportive, interactive community engaged students with the instructor, each other and the course material to support participation in learning. As a result, students reported experiencing big shifts, new growth and increased confidence during their leadership courses.

We discuss our findings and offer specific recommendations for leadership educators to better support BIPOC students in their leadership courses and classrooms and for further research with BIPOC students.

This study seeks to examine the relationship between macroeconomic shock indicators, namely geopolitical risk (GPR), global economic policy uncertainty (GEPU) and financial stress (FS), and returns as well as volatilities on seven carefully selected stock markets in Africa. Specifically, the study intends to unravel the co-movement and interdependence between the respective macroeconomic shock indicators and each of the stock markets under consideration across time and frequency.

This study employed wavelet coherence approach to examine the strength and stability of the relationships across different time scales and frequency components, thereby providing valuable insights into specific periods and frequency ranges where the relationships are particularly pronounced.

The study found that GEPU, Financial Stress (FS) and GPR failed to induce significant influence on African stock market returns in the short term (0–4 months band), but tend to intensify in the long-term band (after 6th month). On the contrary, stock market volatilities exhibited strong coherence and interdependence with GEPU, FSI and GPR in the short-term band.

This study happens to be the first of its kind to comprehensively consider how the aforementioned macro-economic shock indicators impact stock markets returns and volatilities over time and frequency. Further, none of the earlier studies has attempted to examine the relationship between macro-economic shocks, stock returns and volatilities in different crisis periods. This study is the first of its kind in to employ data spanning from May 2007 to April 2023, thereby covering notable crisis periods such as global financial crisis (GFC) and the COVID-19 pandemic episodes.

This paper aims to study the influence of leisure-time physical activity on depression crises and the difficulty in performing light household tasks.

A population-based cross-sectional study was conducted using data from the 2020 European Health Survey in Spain. A total of 1,076 individuals diagnosed with depression were selected. ANOVA, chi-square, Fisher’s exact test and Mann–Whitney U test were applied, and a simple moderation analysis was conducted using the SPSS PROCESS 4.0 macro.

Women had higher percentages of some or much difficulty in performing domestic activities (p = 0.007). Differences were found between experiencing a crisis in the past 12 months versus not having one (p < 0.001): less physical activity was performed, perceived health was worse and difficulty in performing domestic activities increased. The moderation analysis confirmed the moderating effect of physical activity on the relationship between experiencing a crisis and having difficulty with domestic activities (p = 0.017).

The usual limitation of descriptive cross-sectional studies, which cannot establish causal relationships, must be added to low sample sizes in some categories.

The analysis with gender differentiation, promoting gender-specific adapted practices, considering age and personal circumstances of the patient, appropriate exercise prescription, as well as its evaluation and follow-up, are areas where specialist nurses need to delve deeper to enhance the quality of care.

Leisure-time physical activity moderates the relationship between experiencing a crisis and having difficulty with light household tasks: those who engage in occasional physical activity have less difficulty compared to those who do not engage in it.

Three scenario-based experiments were conducted to explore the influence of the base option’s price format (just-at vs just-below) on tourists’ upgrade intention. The findings of this research indicated that tourists are more inclined to upgrade the option when the base option’s price is presented in a just-at condition due to the mediating role of tourists’ price perceptions of the upgrade option. This study discovered that the just-at (vs just-below) pricing strategy can lower tourists’ price perceptions of the upgrade choice. This research further explored the moderating of tourists’ mindsets. It was found the threshold-crossing effect will disappear for tourists with fixed mindsets. This study also provides practical implications for travel service providers to set up appropriate pricing strategies to attract tourists to make upgrade decisions.

The advancement of a profession depends on factors such as firm education, training programmes and vibrant professional associations. The purpose of this study is to provide baseline information on archives and records management (ARM) professionals from Africa, including their views on education and training programmes. Related studies have been limited to investigating the experiences of graduates from a few institutions within a limited jurisdiction. Similar studies have not been conducted by African-based ARM associations.

This study’s survey approach was administered electronically. Two surveys explored themes through 10 research questions in three categories: background information; characteristics of the education; and types of courses and extent covered during the study.

The two surveys had 107 and 179 respondents, respectively, domiciled in 19 African countries. In both studies, about 75% of the respondents had an undergraduate- or master-level qualification. Between 69% and 87% of the respondents from the first and second surveys, respectively, had completed their educational programmes within their home countries. There was varied sentiment on the types of courses and level of coverage within their studies. Legal and technology aspects were less covered in the curriculum than core subjects.

To the best of the author’s knowledge, this study is the first with findings from ARM respondents across several African countries. It provides insight into the demographics and educational programmes. This study’s unique contribution provides baseline data for more detailed and nuanced studies that will explore data and investigate patterns within and among individual countries on the continent.

Using the next-day and next-week returns of stocks in the Korean market, we examine the association of option volume ratios – i.e. the option-to-stock (O/S) ratio, which is the total volume of put options and call options scaled by total underlying equity volume, and the put-call (P/C) ratio, which is the put volume scaled by total put and call volume – with future returns. We find that O/S ratios are positively related to future returns, but P/C ratios have no significant association with returns. We calculate individual, institutional, and foreign investors’ option ratios to determine which ratios are significantly related to future returns and find that, for all investors, higher O/S ratios predict higher future returns. The predictability of P/C depends on the investors: institutional and individual investors’ P/C ratios are not related to returns, but foreign P/C predicts negative next-day returns. For net-buying O/S ratios, institutional net-buying put-to-stock ratios consistently predict negative future returns. Institutions’ buying and selling put ratios also predict returns. In short, institutional put-to-share ratios predict future returns when we use various option ratios, but individual option ratios do not.

This paper aims to answer the question of the future of work-from-home (WFH) from the position of productivity and employee well-being. In this research, the authors studied the future of WFH by analyzing perceived home productivity and work–life balance (WLB) in the WFH environment. This paper attempts to say that WFH is here to stay, and business leaders should acknowledge this fact and adjust their strategy.

The authors used a heterogeneous sampling method, surveying 1,157 employees in Mexico on productivity and WLB. The authors did three independent interventions in different pandemic stages: beginning – in 2020, peaking – in 2021, and calming down – in 2022. The authors used contingency table analysis to research the influence of perceived productivity and WLB in WFH on employees’ propensity to WFH.

The results show that employees perceive productivity the same or higher when WFH and WLB same or better. The findings of this study are a wake-up call for managers who refuse to embrace changes in employees’ perceptions and needs. Companies refusing to acknowledge the existing need for WFH may face significant challenges in terms of employee satisfaction and retention.

This study contributes to the broader literature by addressing whether WFH is here to stay. The dynamics of returning to office vary from country to country, industry to industry and business to business. This paper is an answer to the future of WFH for Mexico and the Latin American region.

Este artículo tiene como objetivo responder a la pregunta sobre la relevancia del futuro del trabajo desde casa (WFH por sus siglas en Inglés) desde la perspectiva de la productividad y el bienestar de los colaboradores. En esta investigación, se estudia el futuro del trabajo desde casa analizando la productividad percibida y el equilibrio entre la vida laboral y personal en el entorno del trabajo desde casa. Este documento intenta decir que el trabajo desde casa llegó para quedarse y que los líderes empresariales deberían reconocer este hecho y ajustar sus estrategias.

Se ha utilizado un método de muestreo heterogéneo, encuestando a 1157 colaboradores que trabajan en México sobre el tema de productividad y balance vida-trabajo (WLB por sus siglas en Inglés). Se realizaron tres intervenciones independientes en diferentes etapas de la pandemia del COVID-19: al inicio (2020), un año despúes que fué el pico (2021) y finalmente cuando está a la baja y en calma (2022). Se utilizaron diversas herramientas estadísticas como el análisis de tablas de contingencia para investigar la influencia de la productividad percibida y el WLB en el trabajo desde casa en los colaboradores que son propensos a trabajar desde casa.

Los resultados muestran que los colaboradores perciben la productividad igual o mayor cuando trabajan desde casa y el balance vida-trabajo son iguales o en ocasiones mejores. Los hallazgos de este estudio son para llamar la atención de los directivos y gerentes que se niegan a aceptar que han existido cambios y ajustes en las percepciones y necesidades de los colaboradores en las maneras de realizar el trabajo. Las empresas que se niegan a reconocer la necesidad existente de trabajar desde casa pueden enfrentar desafíos importantes en el corto plazo en términos de satisfacción y retención de los empleados.

Este estudio contribuye para ampliar la literatura y poder abordar el tema de las modalidades de trabajo, en particular para profundizar si el trabajo desde casa (WFH) llegó para quedarse. Así mismo, se puede mencionar que la dinámica del regreso a las oficinas puede variar de un país a otro, de una industria a otra y de una empresa a otra, ofreciendo una variedad de reflexiones y puntos de vistas, finalmente este documento es una respuesta a la reflexión sobre el futuro del trabajo, los beneficios del trabajo en casa para México y para la región de LATAM.

Este artigo pretende responder à questão sobre a relevância do futuro do trabalho a partir de casa (WFH, Work from home, por suas siglas em inglês) na perspetiva da produtividade e do bem-estar dos colaboradores. Nesta investigação, o futuro do trabalho a partir de casa é estudado através da análise da produtividade percebida e do equilíbrio entre vida pessoal e profissional no ambiente de trabalho a partir de casa. Este artigo tenta dizer que o trabalho a partir de casa veio para ficar e que os líderes empresariais devem reconhecer este facto e ajustar as suas estratégias.

Foi utilizado um método de amostragem heterogêneo, pesquisando 1.157 funcionários que trabalham no México sobre o tema produtividade e equilíbrio entre vida profissional e pessoal (WLB). Foram realizadas três intervenções independentes em diferentes fases da pandemia da COVID-19: no início (2020), um ano após o pico (2021) e finalmente quando estava em declínio e calma (2022). Várias ferramentas estatísticas, como a análise de tabelas de contingência, foram utilizadas para investigar a influência da produtividade percebida e do WLB no trabalho em casa em funcionários propensos a trabalhar em casa.

Os resultados mostram que os colaboradores percebem uma produtividade igual ou superior quando trabalham a partir de casa e que o equilíbrio entre vida pessoal e profissional é igual ou por vezes melhor. Os resultados deste estudo são para chamar a atenção de diretores e gestores que se recusam a aceitar que tenham havido mudanças e ajustes nas percepções e necessidades dos funcionários nas formas de fazer o trabalho. As empresas que se recusam a reconhecer a necessidade existente de trabalhar a partir de casa podem enfrentar desafios significativos a curto prazo em termos de satisfação e retenção dos colaboradores.

Este estudo contribui para ampliar a literatura e poder abordar a questão das modalidades de trabalho, em particular para aprofundar se o trabalho em casa (WFH) veio para ficar. Da mesma forma, pode-se mencionar que a dinâmica de retorno aos escritórios pode variar de um país para outro, de uma indústria para outra e uma empresa para outra, oferecendo uma variedade de reflexões e pontos de vista. Em última análise, este documento é um resposta. para refletir sobre o futuro do trabalho, os benefícios de trabalhar em casa para o México e a região LATAM.

The COVID-19 pandemic has caused severe challenges to ethnic minorities in the UK. While the experiences of migrants are both complex and varied depending on individuals' social class, race, cultural proximity to the host country and acculturation levels, more in-depth studies are necessary to fully understand how COVID-19 affects specific migrant groups and their health. Taiwanese migrants were selected because they are an understudied group. Also, there were widespread differences in pandemic management between the UK and Taiwan, making this group an ideal case for understanding how their acculturation journey can be disrupted by a crisis.

Qualitative data were collected at two different time points, at the start of the UK pandemic (March/April 2020) and six months on (October/November 2020), to explore migrant coping experiences over time. Theoretically, the authors apply acculturation theory through the lens of coping, while discussing health-consumption practices, as empirical evidence.

Before the outbreak of the pandemic, participants worked hard to achieve high levels of integration in the UK. The pandemic changed this; participants faced unexpected changes in the UK’s sociocultural structures. They were forced to exercise the layered and complex “coping with coping” in a hostile host environment that signalled their new marginalised status. They faced impossible choices, from catching a life-threatening disease to being seen as overly cautious. Such experience, over time, challenged their integration to the host country, resulting in a loss of faith in the UK’s health system, consequently increasing separation from the host culture and society.

It is important to note that the Taiwanese sample recruited through Facebook community groups is biased and has a high level of homogeneity. These participants were well-integrated, middle-class migrants who were highly educated, relatively resourceful and active on social media. More studies are needed to fully understand the impact on well-being and acculturation of migrants from different cultural, contextual and social backgrounds. This being the case, the authors can speculate that migrants with less resource are likely to have found the pandemic experience even more challenging. More studies are needed to fully understand migrant experience from different backgrounds.

Public health policymakers are advised to dedicate more resources to understand migrants' experiences in the host country. In particular, this paper has shown how separation, especially if embraced temporarily, is not necessarily a negative outcome to be corrected with specific policies. It can be strategically adopted by migrants as a way of defending their health and well-being from an increasingly hostile environment. Migrants' home country experience provides vicarious learning opportunities to acquire good practices. Their voices should be encouraged rather than in favour of a surprising orthodox and rather singular approach in the discussion of public health management.

The paper has clear public health policy implications. Firstly, public health policymakers are advised to dedicate more resources to understand migrants' experiences in the host country. Acknowledging migrants' voice is a critical first step to contribute to the development of a fair and inclusive society. Secondly, to retain skilful migrants and avoid a future brain-drain, policymakers are advised to advance existing infrastructure to provide more incentives to support and retain migrant talents in the post-pandemic recovery phase.

This paper reveals how a group of previously well-integrated migrants had to exercise “coping with coping” during the COVID crisis. This experience, over time, challenged their integration to the host country, resulting in a loss of faith in the UK’s health system, consequently increasing separation from the host culture and society. It contributes to the understanding of acculturation by showing how a such crisis can significantly disrupt migrants' acculturation journey, challenging them to re-acculturate and reconsider their identity stance. It shows how separation was indeed a good option for migrants for protecting their well-being from a newly hostile host environment.