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A novel method for modelling permanent magnets is investigated based on numerical approximations with rational functions. This study aims to introduce the AAA algorithm and other recently developed, cutting-edge mathematical tools, which provide outstandingly fast and accurate numerical computation of potentials and vector fields.

First, the AAA algorithm is briefly introduced along with its main variants and other advanced mathematical tools involved in the modelling. Then, the analysis of a circular Halbach array with a one-pole pair is carried out by means of the AAA-least squares method, focusing on vector potential and flux density in the bore and validating results by means of classic finite element software. Finally, the investigation is completed by a finite difference analysis.

AAA methods for field analysis prove to be strikingly fast and accurate. Results are in excellent agreement with those provided by the finite element model, and the very good agreement with those from finite differences suggests future improvements. They are also easy programming; the MATLAB code is less than 200 lines. This indicates they can provide an effective tool for rapid analysis.

AAA methods in magnetostatics are novel, but their extension to analogous physical problems seems straightforward. Being a meshless method, it is unlikely that local non-linearities can be considered. An aspect of particular interest, left for future research, is the capability of handling inhomogeneous domains, i.e. solving general interface problems.

The authors use cutting-edge mathematical tools for the modelling of complex physical objects in magnetostatics.

This paper aims to solve inhomogeneous dielectric problems by matching boundary conditions at the interfaces among homogeneous subdomains. The capabilities of Hilbert transform computations are deeply investigated in the case of limited numbers of samples, and a refined model is presented by means of investigating accuracies in a case study with three subdomains.

The accuracies, refined by Richardson extrapolation to zero error, are compared to finite element (FEM) and finite difference methods. The boundary matching procedures can be easily applied to the results of a previous Schwarz–Christoffel (SC) conformal mapping stage in SC + BC procedures, to cope with field singularities or with open boundary problems.

The proposed field computations are of general interest both for electrostatic and magnetostatic field analysis and optimization. They can be useful as comparison tools for FEM results or when severe field singularities can impair the accuracies of other methods.

This static field methodology, of course, can be used to analyse transverse electro magnetic (TEM) or quasi-TEM propagation modes. It is possible that, in some case, these may make a contribution to the analysis of axis symmetrical problems.

The most relevant result is the possible introduction of SC + BC computations as a standard tool for solving inhomogeneous dielectric field problems.

The benefits of adopting lean manufacturing for leveraging corporate sustainability have been highlighted in the literature. However, these studies have neglected the social side of sustainability compared with the attention given to the environmental aspects. Addressing this gap, this paper aims to investigate the influence of lean practices on the dimensions of employee social sustainability (ESS), which enabled the identification of the most critical practices.

This paper conducted an exploratory study in two phases: first, seeking evidence in the literature, and second, applying the analytic hierarchy process (AHP) to connect ESS to lean practices based on expert opinion.

From the literature review, this paper found linkages between eight lean manufacturing practices and four dimensions of ESS. Based on evidence from the literature, the authors designed and applied an AHP model to set priorities among lean practices and social dimensions. Therefore, “health and safety” was evaluated as the most critical social dimension, and 5S was considered the most influential lean practice on ESS.

This study contributed to introducing the perspective of lean manufacturing practices as enablers of ESS. Notably, it pointed out which specific practices should be prioritized in the lean implementation process with social sustainability purposes. In addition, it identified relationships not reported in the literature, raising questions for further investigation.

The current tourism model based on luxury hotel resorts in the Gulf of Papagayo (Guanacaste, Costa Rica) is largely affecting the living condition of its nearby communities. This paper aims to discuss the importance of promoting public–private partnerships (PPPs) as innovative forms of governance to increase the sustainability of this tourism model.

Based on the review of institutional documents and the PPP literature, this article critically maps each stage of the process to design PPPs for sustainable tourism, taking into account the case of Guanacaste. In this way, it offers a practical guideline to plan partnerships involving academia, public institutions and private partners in particular tourism sites.

The paper shows that the feasibility of a PPP in Guanacaste strongly depends on the alignment of partners’ local interests, on the adequacy of the partnership to the social and economic conditions of the context wherein it has to be carried out, and on the appropriation of results from partners.

This work combines a theoretical and practical perspective to understand the interactive process to be carried out to design PPPs in developing tourism destinations.

While Digitalisation is gaining momentum among practitioners and the scientific world, there is still a struggle to embark on the digitalisation journey successfully. The struggles are more significant for SMEs compared to large companies. Such transformation could face internal resistance, which evokes the need to put it into a socio-technical perspective such as lean. This paper investigates how SMEs could implement digital tools and technologies in their operations.

We relied on a multiple case study design in three SME manufacturing companies in Italy. Based on the experience of those companies, the struggles in the implementation and the lessons learned, we formulate an implementation model of digital tools driven by lean thinking.

Companies tend to implement first digital tools that help with real-time data collection and stress that introducing digital tools becomes challenging without reducing waste in production. The model stresses top management commitment, middle-line involvement and operator training to resist change. All these factors coincide with socio-technical lean bundles developed by seminal works. In addition, the study highlights that financial incentives are not necessarily the common barrier to digital tools implementation in SMEs but rather the cultural aspect.

Our paper enriches the extant body of knowledge by deriving knowledge around digitalisation implementation through lessons learned and corrective actions. It allows managers to benchmark and compare the current state of the implementation process with that of other companies and the one proposed to make corrective actions when necessary.

This chapter examines changes in smallholder agriculture in terms of processes of de-agrarianization in a rapidly changing regional economy of Costa Rica long characterized by small-scale commercial coffee farming.

The study is based on multiple periods (1990–1991, 1993, 2006, 2010–2012) of ethnographic research on household economic strategies among farming families in two districts in the canton of Pérez Zeledón, Costa Rica.

Though occupational multiplicity and non-farm-based livelihoods are on the rise, smallholder agriculture continues to play a substantial role in the livelihood strategies of both young and old and in the regional economy, not in spite of these trends, but because an expanding business sector and an increase in non-farm employment opportunities are creating a demand for agricultural produce and providing new opportunities for smallholders to diversify agricultural production, stabilize their incomes and maintain a significant presence in the regional economy. Specific historic conditions and state policies have been important factors in shaping rural economic change, livelihood strategies and smallholder agriculture in this region.

Sample sizes are relatively small and some data on children’s economic activities were obtained second hand from siblings and/or parents.

This research has implications for policy makers, planners and social activists interested in agrarian change.

This research provides an important longitudinal lens on the economic strategies of farming households, processes of de-agrarianization and the persistence of small-scale family farmers in today’s world.

Recent decades have witnessed a rising concern regarding the prosperity of the environment and utilisation of resources. A sustainable approach is being promoted in all sectors. In the field of tourism, sustainable tourism is widely discussed among researchers and practitioners. On the other hand, luxury tourism is criticised for lavish resource utilisation to serve the few luxury tourists. There is a need to include sustainability in luxury tourism to benefit the environment, local communities, tourist destination and luxury tourists. However, sustainable luxury tourism is an emerging concept and needs more investigation. This chapter attempts to present the existing knowledge about sustainable luxury tourism by implementing a systematic literature review. Further, the opportunities and challenges associated with sustainable luxury tourism are being highlighted. This study has identified the factors that need to be considered to promote sustainable luxury tourism. Moreover, suggestions of the researchers are being presented to serve as guidelines. This study includes an example of the Diphlu river lodge, which has practised sustainable luxury tourism for many years. The viewpoint of luxury tourists are being understood by analysing the reviews of tourists from TripAdvisor using NVIVO-12 qualitative data analysis software. The combination of literature review and practical information provides insight into sustainable luxury tourism.

The purpose of this paper is twofold: first, it aims to investigate how internal and external drivers affect innovation in the Italian food industry. Second, the authors are interested to understand to what extent these drivers are industry specific, and therefore, they are contrasted against those relevant for the pharmaceutical industry in Italy according to the increasing growth of cross-industry innovation between these two sectors. The paper aims, thus, to shed light on the differences between food and pharmaceutical industries in terms of innovation drivers to understand potential precursors of emerging industry convergence.

Both probit and bivariate probit models are estimated, using data from the Italian Community Innovation Survey, in order to provide empirical evidence on drivers affecting innovation in the food and pharmaceutical industries.

The innovation activity of Italian food and pharmaceutical companies strongly relies on the presence of in-house R & D activities. Whereas firms in the pharmaceutical industry combine both internal and external R & D activities and knowledge sources to produce innovation, the case of the food industry is strongly dependent on the acquisition of external technology. In particular, the increased need for absorptive capacity of both sectors emphasises the key role of university research for collaboration, knowledge transfer and product innovation.

The paper gives insights not only on drivers for innovation, but especially on the industry-specific differences which should be taken into account to have a contingent view. Limitations concern the impossibility to perform panel data analysis, due to the design of the database. Furthermore, both food and pharmaceutical sub-samples are not completely representative, since large companies tend to be overrepresented.

This paper provides managerial insights concerning the internal and external drivers affecting innovation. Moreover, it raises awareness as regards the possible differences between the food and pharmaceutical industries, which is crucial for establishing successful pathways for cross-industry innovation.

This study represents one of the few attempts to compare the innovation drivers of two manufacturing sectors (food and pharmaceutical), increasingly involved in cross-industry collaborations, and to highlight the industry-specific differences in those drivers which can act as forerunners of this phenomenon.

Recent information security surveys indicate that both the acceptance of international standards and the relative certifications increase continuously. However, it is noted that still the majority of organizations does not know the dominant security standards or does not fully implement them. The aim of this paper is to facilitate the awareness of information security practitioners regarding globally known and accepted security standards, and thus, contribute to their adoption.

The paper adopts a conceptual approach and results in a classification framework for categorizing available information security standards. The classification framework is built in four layers of abstraction, where the initial layer is founded in ISO/IEC 27001:2005 information security management system.

The paper presents a framework for conceptualizing, categorizing and interconnecting available information security standards dynamically.

The completeness of the information provided in the paper relies on the pace of standards' publications; thus the information security standards that have been classified in this paper need to be updated when new standards are published. However, the proposed framework can be utilized for this constant effort.

Information security practitioners can benefit by the proposed framework for available security standards and effectively invoke the relevant standard each time. Guidelines for utilizing the proposed framework are presented through a case study.

Although the practices proposed are not innovative by themselves, the originality of this work lies on the best practices' linkage into a coherent framework that can facilitate the standards diffusion and systematic adoption.