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Perhaps the most popular pricing model among Bitcoin enthusiasts is the stock-to-flow (S2F) model. The model gained significant traction after successfully predicting the meteoric rise of Bitcoin prices from late 2020 to early 2021. This paper dissects the S2F model for Bitcoin empirically to determine its viability and investigate whether investors can profit from an S2F-based trading strategy.

This paper, dissects the S2F model for Bitcoin by putting it through a battery of tests to examine its design, characteristics, robustness and appropriateness.

Overall, this paper finds the S2F model to be insensitive to differing assumptions in the early stages of the model, alleviating concerns about data mining. This paper produces a dynamic S2F model with no peek-ahead bias and shows evidence that prediction accuracy increases over time. Finally, this paper shows that a dynamic trading strategy that goes long (short) when Bitcoin is undervalued (overvalued) according to S2F is far less profitable than a classic buy-and-hold strategy.

To the best of the authors’ knowledge, this is the first paper to analyze the S2F model in an academic setting by providing a rigorous assessment of the model's construction. This paper demonstrates how the model can be implemented realistically without the peek-ahead bias, creating a tool that can be used contemporaneously by investors.

This study aimed to investigate the influence of the perceived quality by students regarding their experiences in vocational schools in tourism, hospitality and food service on cognitive and affective responses (satisfaction, self-efficacy expectations and self-regulation strategies of motivation for learning - SRSML) and commitment (behavioural response).

A cross-sectional survey was conducted with 454 students from twelve Turismo de Portugal IP-affiliated schools. The theoretical framework was rooted in Self-Determination Theory (SDT) and PLS-SEM, using ADANCO 2.3 software to test the proposed model.

Perceived quality by students concerning their school experiences are socio-contextual factors that directly influence their satisfaction and self-efficacy expectations (cognitive and affective responses). Satisfaction and self-efficacy expectations positively affected SRSML. Finally, satisfaction and the SRSML positively impacted the students` commitment to schools (behavioural response).

This study contributes to academia by comprehensively addressing 16 perceived quality dimensions within vocational education. It aligns with SDT, revealing that socio-contextual factors affect students’ cognitive, affective, and behavioural responses. Additionally, it demonstrates positive relationships between student satisfaction, self-efficacy expectations, SRSML, and students’ commitment to vocational education institutions. This study emphasises the multidimensional nature of perceived quality, urging educational institutions to address tangible and intangible dimensions to develop strategies to provide high-quality experiences, increasing students` satisfaction, self-efficacy expectations, motivation, and commitment.

The ability to attract and retain volunteers is crucial for not-for-profit organizations, and consequently, the need to understand and manage volunteers’ engagement is paramount. The purpose of this paper is to investigate the role of five volunteer engagement dimensions (cognitive, affective, behavioral, social and spiritual engagement) on perceived value-in-context, and its subsequent role for volunteer retention. Thus, providing for the first time an understanding of how unique types of value are determined through different facets of volunteer engagement.

To establish the nature and consequences of volunteer engagement, the authors collaborated with an Australian not-for-profit service organization. Using a survey method, the authors studied the organization’s volunteer workforce resulting in 464 usable responses. To capture volunteers’ degree of spiritual engagement, this paper introduces a rigorously developed unidimensional measure.

The results demonstrate the importance of the five engagement dimensions on volunteers’ perceived value-in-context, while highlighting significant effect differences including some counterintuitive consequences. The authors also establish the role of spiritual engagement and demonstrate the impact of value-in-context for volunteer retention.

This research explores the volunteer engagement-retention chain, by empirically studying the role of value-in-context. The authors provide first evidence for the relationship between volunteer engagement and value-in-context, examining the independent yet relative effects of various facets of volunteer engagement. In doing so, the authors offer new insight into the dimensionality of the volunteer engagement construct, broadening its conceptualization to include spiritual engagement as a core constituent. The authors further demonstrate the impact of value-in-context on volunteer retention, helping organizations to better make sense of meaningful volunteer experiences with long-lasting impacts and mutual benefits.

The rise of non-governmental organisations (NGOs) during the last decades has made the volunteer a key element. Motivation and satisfaction have been indicated as predictive indices of their retention. The purpose of this paper is twofold. On the one hand, it seeks to better understand the motivations of the volunteers, addressing the effects of such motivations. On the other hand, it analyses whether the intensity of such antecedents and effects differs depending on the type of NGO with which they work: generalist vs specialist.

A study with 847 volunteers from different types of NGOs was done using structural modelling methodology and multi-sample analysis.

The type of NGO moderates the relationship between the satisfaction of the volunteer and the intention to recommend.

Given that in specialist NGOs the impact of satisfaction on the intention to recommend is significantly stronger than in generalist NGOs, making sure that volunteers are satisfied becomes a priority in this type of NGO. In this regard, satisfaction studies among volunteers could be conducted periodically to detect crisis situations and implement improvement actions to recover satisfaction in the occupied position.

First, to date, the motivations of the volunteer have been investigated from different disciplines, the self-determination theory (SDT) being an important motivational theory widely used in areas such as social, education and sports psychology. However, there is little research from a marketing approach to understand the background of the motivations of volunteers under this conceptual framework provided by the SDT. Second, there is also a scarcity of literature linking the motivations of a volunteer with the emotions they may feel, ultimately achieving consolidated lasting links with the NGO in which they are integrated. Third, most research on volunteering to date has focused on differentiating volunteers from non-volunteers and understanding the reasons for volunteering. However, the presence of studies on the differences in the motivation of the same according to the type of NGO with which they collaborate has been scarce.

Global mobility remains one of the most pressing challenges of our times. Countries in the north are turning to major ‘sending’ countries in the south to secure their cooperation in controlling their borders and in repatriation processes. By explicitly linking migration to global security threats and weak governance, these migration control initiatives are justified by development goals and sometimes financed by official development assistance (ODA). By connecting criminology with international development scholarship, this chapter seeks to advance our understanding of the novel intersections between criminal justice, security and development to govern mass migration. Focusing on UK policies and the analysis of specific programmes, it interrogates what does the sustainable development goal (10.7) of facilitating ‘orderly, safe, regular and responsible migration’ concretely entail? And to what extent does the language of ‘managed migration’ legitimise restrictive border controls policies and even conflict with other global development goals?

This paper addresses the extent to which culture is affecting the adoption of global human resource management (HRM) practices by Spanish organizations. One of our main objectives was to offer a thorough review of the recent empirical evidence regarding HRM practices in Spanish organizations. Another goal was to discuss these findings in light of the Spanish culture in order to identify possible cultural barriers to the adoption of global HRM practices. Our results suggest that Spanish organizations are slowly adopting global practices; however, many traditional practices remain. We suggest that the cultural variables of low future orientation, high power distance, and low institutional collectivism may exert continuing pressures that will hinder the adoption of certain global HRM practices.

By focussing on the anticipated emotional reactions of volunteers and drawing on theories of motivation and identity, this study investigates how volunteers react to different options of the entrepreneurial model of Amigos for Children Foundation (ACF). The paper proposes a hypothetical model for volunteer’s emotional reactions to potential business model changes. We suggest the relative importance of intrinsic motivational factors, professional identity and attitudes towards business organisations as mediating variables. ACF works exclusively with university students as volunteers, so their specific characteristics may limit some of the conclusions and propositions of this qualitative research, but public policy consequences of supporting similar entrepreneurial transitions can be generally relevant.

Based on the qualitative analysis of semi-structured interviews with volunteers of ACF, a Hungarian non-profit organisation, we explore the challenges of transitioning into a social enterprise.

Previous research showed controversial results about the impact of pay on the motivations of volunteers. For a non-profit organisation that would like to utilise the competencies of its volunteers, introducing a market-based service may mean additional financial resources and the potential loss of human resources. Understanding the moderating factors of volunteers' reactions might help build better theories for managing the non-profit-social enterprise transition and designing public policies to support scaling up the impact of successful social purpose organisations.

For practitioners, the research underlines the importance of participatory mechanisms in volunteer management. By managing transitions better, non-profit organisations can expand their social impact by acquiring more financial resources through market-based activities closely related to their original activities and keeping their volunteers. The study elucidates the relevance of the crowding-out effect and indicates some hypothetical moderating variables influencing its potential degree.

Following successful discussion of this case, students should be able to:▪ understand and apply the principles of effectuation;▪ understand the difficulty of obtaining traditional financing in Latin America;▪ determine the importance of matching new hire and company values, particularly in a small business; and▪ analyze some of the unique problems facing a business at the point of scaling up and provide suggestions for how the protagonist could address those problems.

This case provides an introduction to the Fintech industry in South and Central America, fruitfully combining tenets of the lean startup methodology, effectual principles of entrepreneurship and a novel method of managing personal finances via decentralized vehicles provided through fintech. In addition, Kuiki Credit and its use of fintech represent a compelling example of industry disruption by an entrepreneurial firm. Owing to its unique location, this case provides students with a lens into a part of the world rife with bureaucracy and, in some cases, corruption. The disruption is thus unique in that not only does one view traditional disruption of industry dynamics, but also government policy and cultural mores. This is evinced within the body of the case through direct quotes from founder Ernesto Leal and Eduardo Morán, one of the company’s first employees. This information highlights the market Kuiki Credit pursued, one underserved by traditional financing and thus lacking access to credit.Consistent with effectual entrepreneurship principles, Ernesto Leal, the main protagonist and a Nicaraguan entrepreneur, drew upon his significant corporate experience in financial institutions and as a franchise owner to create a new venture. Kuiki Credit is designed to increase access to capital and disseminate fintech throughout Central and South America, and in particular first in Costa Rica and later in Nicaragua. The case is set in 2018, when Leal faces a scaling issue. Specifically, he wonders how to maintain an entrepreneurial company with high levels of innovation and a culture of continuous improvement despite the need to grow. Near the end of the case, some specific issues relative to culture are briefly reviewed in relation to the sales department and Leal feeling the need to restructure the company, while being encouraged by the board to hit breakeven targets for three consecutive months prior to expanding to new markets.

This case most appropriately lends itself to discussions in entrepreneurship at the junior or senior undergraduate level. To engage in this case most productively, students should have a basic understanding of entrepreneurship, the equivalent of two to three weeks into the semester.

Teaching notes are available for educators only.

CSS:3: Entrepreneurship.

A profound managerial transformation approach is increasingly designed to unleash the energy and creativity of employees. The purpose of this paper is to observe as the organizations in this sector can use the knowledge sharing to derive maximum efficiency from such crucial volunteers, creating an environment suitable for stimulating the psychological well-being that is the basis of engagement.

This exploratory study proposes a model to account the intrinsic and extrinsic motivations to exchange knowledge related to factors that stimulate volunteer's engagement.

The results of a survey of 301 volunteers operating in European organizations indicate that influencers of volunteers in a specific domain activated by knowledge sharing can act as sources of creation and can reinforce their identity, sense of belonging and trust in the organization.

Despite results cannot be generalized because of the samples of convenience, exploratory factor analysis was used to identify the elements for which nonprofit organizations should activate a knowledge-sharing strategy so that engaged volunteers feel like cocreators of values and therefore act as true competitive assets.

This paper contributes to the expansion of engagement studies through framing the motivations of volunteers in knowledge sharing as a process of social interaction that involves knowledge, experience and expertise and which is able to create an environment suitable to feeding the psychological well-being that is the basis of engagement.