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The purpose of this paper is to present a fully automated numerical tool for computing the effective permeability of porous media from digital images which come from the modern imagery technique.

The permeability is obtained by the homogenization process applied to a periodic rigid solid in which the fluid flow is described by the Stokes equations. The unit cell problem is solved by using the Fast Fourier Transform (FFT) algorithm, well adapted for the microstructures defined by voxels.

Various 3-D examples are considered to show the capacity of the method. First, the case of flow through regular arrays of aligned cylinders or spheres are considered as benchmark problems. Next, the method is applied to some more complex and realistic porous solids obtained with assemblies of overlapping spherical pores having identical or different radii, regularly or randomly distributed within the unit cell.

The use of FFT allows the resolution of high-dimension problems and open various possibilities for computing the permeability of porous microstructures coming from X-ray microtomography.

The purpose of this paper is to investigate the relations in the Marketing/Operations interface through the analysis of data of the operational reality of a Brazilian company with a low technological intensity. The study aims to quantify and determine the impacts of marketing decisions on delivery performance and on flexibility of the operations area.

A longitudinal case study was conducted and the variables used in the model were derived from established theories and were evaluated with artificial neural networks. The case of a food manufacturing company was selected to reflect the relations in the marketing/operations interface of a low technological intensity enterprise.

The results show that the decisions on Place/Channel, Price and Product dimensions of marketing exert a significant impact on flexibility and delivery performance of the operation area.

The findings of the case study cannot be generalised and the outcomes are specific to just one firm. However, the approach lends itself to replication, particularly within low technological intensity companies.

Prior studies have focussed on coordination among functional areas as marketing and operations at higher levels of abstraction. The study contemplate empirical propositions through the data analysis of a company with a low technological intensity that can be used to improve managers' decisions and alignment in the Marketing/Operation Interface.

Football is significant in the global economic context. However, the same significance is not identified in the value added to the chain, as the elements that make it up act in a disintegrated and independent manner with undesired effects. Consequently, it is necessary to structure the undesired effects to seek the basic causes that sustain this problematic situation. Thus, this paper aims to use a CRT to structure the undesired effects and basic causes that limit the positive economic impacts of the south Brazilian football value chain.

A semi-structured questionnaire was applied with questions about the existing constraints. Based on the answers in the interviews, the current reality tree was elaborated, premised on identifying the basic causes that sustain the undesirable effects detected.

Among the main results, it was identified that management problems of the traditional leaders of football clubs and federations are considered the main reason why south of Brazil football cannot fully exploit its economic potential.

It is evidenced that the paper shows the undesired effect that has the most impact on the development of this chain, and it is important to propose improvements to its root causes, aiming at greater efficacy of the resulting actions.

Considering the importance of services and innovation for the modern economy and the peculiarities that differentiate services from tangible goods, the purpose of this paper is to better understand how, based on the capabilities approach, innovation takes place in services.

A qualitative multi-case study was conducted in five instances of innovation in the fitness market, using a semi-structured questionnaire as devised in Zawislak et al. (2014).

The results show that the traditional capabilities framework is limited in explaining service innovation, as there are many levels of intangibility and non-linearity in service provision. Cases show that it is not possible to think of capabilities linearly in the service context. The authors propose that capabilities overlap, and the results show that this is a more accurate way of describing service dynamics. An alternative framework is suggested based on field findings, and a set of propositions are made for future research.

For many years, services were perceived as non-innovative, complementary activities, geared mainly towards the production of goods. The value of this study is to investigate a topic (innovation) that is widely studied in the industrial sector in a service context, contributing to a largely unexplored field.

Considerando a importância dos serviços e inovação na economia moderna, e as peculiaridades que diferenciam serviços de bens tangíveis, este estudo visa entender melhor como se dá a inovação nos serviços baseado na abordagem das capacidades.

Foi conduzido um estudo qualitativo multi-casos em cinco ambientes do mercado de atividades físicas utilizando um questionário semi-estruturado baseado em Zawislak et al. (2014).

Os resultados mostram que a abordagem tradicional das capacidades é limitada em explicar a inovação em serviços, dado que existem diversos níveis de intangibilidade e não-lineariedade na provisão dos mesmos. Propomos que as capacidades se sobrepõem, e os resultados indicam que essa é uma forma mais acurada de descrever a dinâmica da inovação em serviços. É sugerida uma abordagem alternativa e uma série de proposições para pesquisas futuras.

Por muito tempo serviços eram percebidos como atividades complementares não inovativas direcionadas para a produção de bens. O valour desse estudo é investigar um tópico (inovação) já amplamente estudado no setor industrial, porém num contexto de serviços, assim contribuindo para um campo quase inexplorado.

To investigate how the financial status of students in England and France affects their experience of university life.

A questionnaire survey was carried out among undergraduates in two countries. There were 168 responses from students studying at a French university and 325 responses from students studying at an English university.

The financial burden in France rests with parents, while in England students are largely responsible for their own funding. Indicators suggest that English students may be suffering from financial difficulties. Students continue the tradition of enjoying themselves and socialising, whatever their nationality and financial status.

The comparison made was not between institutions of equal status. The Institut de Formation Internationale in Rouen is part of a Grande Ecole group which is private, and may attract students from higher income families. The students at Manchester Metropolitan University Cheshire study in a rural locale (the towns of Crewe and Alsager in south Cheshire), which is unusual for a UK university and it may well be that a lower proportion of these undergraduates come from higher income families than the French students.

While it would seem to be more equitable and economically efficient for individuals to pay directly for services they receive, rather than those services being funded by higher tax, this study highlights certain problems. The quality of the educational experience for English students may be reduced by their continuing to live at home with parents and carrying out low level work while studying.

No other research appears to have been carried out in the UK or in France on this topic.

This exploratory research aims to identify the types of social networks established by German and French expatriates.

The authors use the concepts of social capital and social networks, as well as the societal and cultural approaches, to investigate the way expatriates develop their social networks. The authors' empirical study is based on 40 semi-structured interviews conducted with German and French expatriates.

The authors' findings show that German expatriates mainly establish professional networks, whereas their French counterparts also focus on personal networks. They further indicate that managing social capital lies within the individual responsibility of German expatriates, whereas it is part of higher education institutions in France.

The authors highlight the way German and French expatriates manage their social networks and provide novel insights into the role played by higher education systems and the cultural characteristics of their home country context.

Community perception of climate change is a factor in increasing local awareness of climate disaster risk. This encourages more disaster risk reduction actions by the communities themselves, and thus, provides a driver for sustainable community disaster risk management (DRM) initiatives. Using these hypotheses, this chapter assesses whether the communities’ climate change perceptions, awareness of climate hazardous risk, and subsequent actions on DRR enable local DRM capacity to reduce the increasing climate disaster risk. The study conducts household surveys with an original questionnaire in four communities in Cartago City, Costa Rica.

This study aims to investigate the impact of the Brazilian conditional cash transfer program (Bolsa Família Program – BFP) on the nutritional status of children in beneficiary families. Specifically, we examine the effects of the BFP on the following outcome variables: (1) energy intake in kcal, (2) carbohydrate consumption, (3) protein consumption and (4) lipid consumption.

This research utilizes microdata from the Household Budget Survey of the Brazilian Institute of Geography and Statistics (IBGE) for 2017 and 2018. We employ the ordinary least squares method for complex samples (ordinary least square Survey) and matching methods (propensity score weighting and propensity score matching) to account for the complex data structure. We also analyze heterogeneous effects in the country's macro-regions.

Our findings indicate that the BFP positively affects the average macronutrient consumption of children in beneficiary households, with the effects being more pronounced in Brazil's north and northeast regions.

Our study suggests that the BFP, as a conditional cash transfer program, can improve the nutritional status of children in beneficiary households.

To the best of our knowledge, this study contributes to the existing literature by examining the impact of the BFP on the macronutrient intake of children in beneficiary families.

The peer-review history for this article is available at: https://publons.com/publon/10.1108/IJSE-03-2023-0216

The author's interest in learning organisation development leads him to examine large French companies' practices regarding “high potential” executives policies and to question their selection and development processes and their capabilities to develop learning oriented organisations.The author also tries to explain why most large French companies are not yet familiar with this concept.

An analysis of the managerial and leadership characteristics of the French élite, as well as of the way they are trained in French grandes écoles and universities, can help to understand the kind of dominant style of leadership that features in the so called “high potential” executives in most large French companies.

The criteria against which these French “high potential” executives are discriminated explains largely their still very traditional hierarchical and centralised leadership styles, that are not favourable to build the more learning oriented organisations of the future. In addition most of the management development programmes for these executives stem from the traditional hierarchical leadership models that do not foster the necessary changes.

This article is based on the results of several studies performed in France by organisational sociologists about the corporate élite and the “high potential” executives of large companies and their development policies. The author relies on his participation in field researches but also draws from his extensive professional experience and in‐depth knowledge of these large organisations as consultant, trainer and speaker.

This article provides a critical approach of the mainstream “high potential” model based on the learning organisation philosophy. It proposes another vision of the “high potential” executive concept that the author believes to be more adequate in facing up to the challenge of the HR management and leadership changes that most large French organisations will likely have to face in the future. It also raises the issue of the adequacy of the present leadership development offer of the higher management education system. Although slightly political it aims at generating a debate about the very concept of the “high potential” executive, which is a major key to the necessary changes in the people management and leadership practices for the organisations of the future.

The purpose of this paper is to analyze the characteristics of a subculture of consumption organized toward a nostalgic brand on a social media platform. More specifically, the authors examine the role of these nostalgic feelings in the development of a community identity and the benefits they promote in the creation and perpetuation of this group.

The authors conducted a netnographic study to examine the case of Caloi 10 on Facebook. The data collection was carried out by following interactions among members of this community for seven months. Besides this, field observations and interviews were also considered in the analysis.

Four categories emerged from the analysis: Identity and nostalgia, the subculture’s ethos, consumption habits and hierarchical social structure. Nostalgia was shown to have a collective dimension, connecting the group around the brand, and positively affecting the ties between members and members and the brand.

On-line brand communities can be promoted to strengthen connections between consumers and a brand, and between consumers with each other. For that, it is important to understand the characteristics and specificities of these groups.

Few studies have dealt with the characteristics of brand communities in social media, as well as the role of nostalgia in these groups. This research fills these gaps, exploring aspects related to consumption as a way of transmitting symbolic meanings and expressing nostalgic feelings in on-line brand communities.