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The purpose of this paper is to analyze numerically the blowup in finite time of the solutions to a one-dimensional, bidirectional, nonlinear wave model equation for the propagation of small-amplitude waves in shallow water, as a function of the relaxation time, linear and nonlinear drift, power of the nonlinear advection flux, viscosity coefficient, viscous attenuation, and amplitude, smoothness and width of three types of initial conditions.

An implicit, first-order accurate in time, finite difference method valid for semipositive relaxation times has been used to solve the equation in a truncated domain for three different initial conditions, a first-order time derivative initially equal to zero and several constant wave speeds.

The numerical experiments show a very rapid transient from the initial conditions to the formation of a leading propagating wave, whose duration depends strongly on the shape, amplitude and width of the initial data as well as on the coefficients of the bidirectional equation. The blowup times for the triangular conditions have been found to be larger than those for the Gaussian ones, and the latter are larger than those for rectangular conditions, thus indicating that the blowup time decreases as the smoothness of the initial conditions decreases. The blowup time has also been found to decrease as the relaxation time, degree of nonlinearity, linear drift coefficient and amplitude of the initial conditions are increased, and as the width of the initial condition is decreased, but it increases as the viscosity coefficient is increased. No blowup has been observed for relaxation times smaller than one-hundredth, viscosity coefficients larger than ten-thousandths, quadratic and cubic nonlinearities, and initial Gaussian, triangular and rectangular conditions of unity amplitude.

The blowup of a one-dimensional, bidirectional equation that is a model for the propagation of waves in shallow water, longitudinal displacement in homogeneous viscoelastic bars, nerve conduction, nonlinear acoustics and heat transfer in very small devices and/or at very high transfer rates has been determined numerically as a function of the linear and nonlinear drift coefficients, power of the nonlinear drift, viscosity coefficient, viscous attenuation, and amplitude, smoothness and width of the initial conditions for nonzero relaxation times.

The paper aims to elucidate the potential of a socio-cultural approach to social marketing. Drawing on a practice-theoretical understanding of change, the paper discusses how a socio-cultural approach can inform social marketing and enhance the possibilities of the field to address complex, multifaceted issues that require changes beyond the individual.

While the paper is conceptual in nature, it uses an illustrative example of food waste as the basis for an investigation of what a socio-cultural approach, rooted in practice-theoretical understanding of change, means for social marketing.

The paper is conceptual in nature but highlights new opportunities for social marketing connected to a socio-cultural approach foregrounding practice changes. The paper introduces potential roles that social marketers can adopt to initiate and support practice changes in the context of food waste.

The paper emphasises the importance of focussing on the socio-culture and practices connected to the issue in question, both when scoping for insight and when developing the ways to address it.

By integrating a practice-theoretical understanding of change, social marketing and food waste literature, the paper offers novel insights about the potential of adopting a socio-cultural approach to social marketing. The paper discusses a socio-cultural approach to social marketing in context, emphasising the roles social marketers can play in practice changes.

The purpose of this study is to discuss the concept of information in relation to temporality within the context of climate change communication. Furthermore, the paper aims to highlight the empirical richness of information as a concept by analysing its use in context.

The discussion is based on 14 semi-structured interviews with initiators and collaborators of 6 open letters on climate change published in 2018–2019. By taking three specific notions the interviewees introduced—fast food information, information quality and information gap–as the analytical point of departure, the study aims for a contextual understanding of information grounded in temporal sensitivity.

The paper finds that information in the context of open letters is informed by different, and at times contradicting, temporalities and timescapes which align with various material, institutional and discursive practices. Based on this finding, the paper argues that notions of information are intrinsically linked to the act of communicating, and they should be viewed as co-constituting each other.

The paper contributes with an empirically informed discussion regarding the concept of information as it is used in a specific context. It illustrates how “information” is far from being understood in a singular fashion, but is made up of multifaceted and at times contradictory understandings. Ultimately, they correspond to why and how one communicates climate change information.

The field of scientific research on small and medium-sized family businesses has been growing exponentially and the aim of this paper is to systematize the body of knowledge to develop an agenda for the future.

Adopting comparative bibliometric analyses on 155 articles (from 1989 until 2018) the authors provide a systematic assessment of the scientific research about small family firms, unveiling the structure and evolution of the field. Bibliographic coupling, co-citation analysis and co-occurrence analysis are adopted to identify the most influential studies and themes.

Four clusters of research are reviewed: succession in family SMEs, performances of family SMEs, internationalization of family SMEs and organizational culture of family SMEs.

This paper contributes to the field of family SMEs by providing a systematic analysis of the scientific knowledge. Reviewing those clusters allows to providing avenues and reflections for future research and further practice.

The construct of psychological capital or PsyCap (consisting of the positive psychological resources of hope, self-efficacy, optimism and resilience) has been demonstrated to relate to employees’ attitudinal and behavioral outcomes. The purpose of this study is to investigate the influence of positive psychological capital on mental health, readiness for organizational change, and job insecurity in the wake of COVID-19 pandemic.

Data were collected from 567 hotel employees working in hotels in the Kingdom of Saudi Arabia. A quantitative approach was used and employees were requested to fill the questionnaires.

Results show that psychological capital enhances an employee’s mental health and readiness for the organizational change. Moreover, PsyCap is found to negatively impact the perceptions of job insecurity among hotel employees. The study has useful managerial implications for hoteliers, especially, in the wake of COVID-19 pandemic.

This is the first study of its kind to link hotel employees’ positive psychological capital with their perceptions about job insecurity and mental health. COVID-19 pandemic has hit the world fiercely and new normal expects employees to be ready to embrace changes in organizations. This study contributes to the literature on hospitality management by linking psychological capital with hotel employees’ readiness for organizational change in the context of Coronavirus.