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The reliable performance of critical components working under extreme conditions is paramount to the safe operation of aircraft, and material selection is critical. Copper alloys are an obvious choice for such applications whenever a combination of transport, mechanical and tribological properties is required. However, low strength and hardness issues require development of new copper alloys and composites to improve service life and reliability. This study aims to investigate the effect of carbon nanotubes as reinforcement phase in copper-matrix composites.

The development of novel copper-based composites refined to the nanoscale was envisaged through mechanical milling of mixtures containing copper and carbon nanotubes (2 Wt.%). Milling took place in a planetary ball mill for times varying between 1 h and 16 h at 400 rpm. A ball-to-powder ratio of 20:1 and alumina vial and copper spheres were used under dry conditions or with addition of isopropyl alcohol. Scanning electron microscopy/energy dispersive spectroscopy, size distribution, Raman spectroscopy and X-ray diffraction were used to study the produced powders.

Attained results show that mechanical milling of the studied system produces nanostructured powders containing second-phase carbon nanotubes homogeneously distributed in the metallic matrix, together with severe copper grain refinement. This should correspond to increased residual microstresses, envisaging significant improvement of mechanical properties of the produced copper composites.

The novelty of the work resides in the use of carbon nanotubes for the reinforcement of copper, and on the systematic microstructural characterisation of the produced composites.

This chapter deals with the development of banking in the Crown of Aragon from the end of the thirteenth century through the establishment of money changers, which followed similar patterns as in other Western European territories. It starts with a review of existing literature and follows with an explanation on the different banking services provided by money changers and the specific legal framework that supported such activities. It then examines the geographical distribution of private banks in cities and towns within the domains of the kings of Aragon, as well as their evolution throughout the fourteenth century. After that, it offers an analysis of the most common professional profiles among these bankers and financers. Finally, drawing on a heterogeneous pool of unpublished data, it seeks to shed light on the diversity of investors and clients of these establishments, a crucial proof of their role in integrated financial markets.

This study aims to explore if, with increasing consumer empowerment, consumers are actively pulling content through a multitude of platforms rather than relying on media owners to dictate their product choices. How do media owners and content producers move toward a more reciprocal and interactive business strategy to deal with the change?

The study was qualitative and exploratory in nature and utilized in-depth and semi-structured interviews of media consumers and experts.

Consumer behavior has changed due to increased product control, in terms of type and occasion, across all income levels. The value of curatorship has increased and social media has fundamentally changed consumption patterns. Using the Berthon et al. model of response functions, we found that, content producers often suffer from inertia and operate with an Isolate strategy. The second most common approach is that of Follow or customer orientation. There is limited engagement with the innovation orientations of Shape and Interact. It is best for the industry to move toward an Interact model, accepting that consumers sometimes wish to create and at other times wish content to be effortlessly provided to them.

This study adopted a qualitative approach of industry experts and consumers within a single context. The further implications would be to develop the Interact strategy in more detail, especially toward the end of how to get media providers to change their current orientations.

Business models of product producers in the new business environment seek to be more consumer-centric. This must not be done at the expense of an innovation orientation.

There has been a lot of discussion on the need to change business models in the wake of changed consumer behavior. The current paper provides guidance on how to respond to the new media world.

Energy consumption and renewable energy sources are included in the goals for the 2030 Sustainable Development Goal 7 (SDG7) agenda, and target buildings are the biggest electricity consumers. In turn, Netzero energy buildings (NZEB) contribute to achieve SDG7 goals. This paper aims to identify which Brazilian higher education institutions (HEIs) practices contribute to developing the NZEB concept.

Case studies were selected to identify which implanted practices applied by HEIs in Brazil, listed in the UI GreenMetric 2020 Ranking, are related to the NZEB concept. The implemented sustainable practices were also analyzed to evaluate the connections and impact between universities and the local community.

Results show the lighting and air conditioning retrofit were among the most common practices related to energy efficiency to reduce consumption. For renewable energy generation, photovoltaic solar energy is the most common practice used by HEIs.

Only Brazilian HEIs listed in the UI Green Metric Ranking were analyzed. No standard regulation or formal reports support the wide dissemination of the strategies adopted by HEIs in Brazil.

The strategies adopted by HEIs related to Netzero buildings can reduce emissions, optimize operating costs and improve building comfort conditions, which connect all SDGs.

HEIs can promote awareness related to energy use and clean energy generation within the local community.

This paper presents the most common strategies adopted by Brazilian HEIs. However, limitations related to lack of strategies, data transparency and specific Netzero energy regulation were also found. These issues can hinder other HEIs to adopt similar strategies and contribute to the promotion of SDG7 in Brazil.

This study attempts to encapsulate the idea of influencer marketing in the food sector and the vital role played by food influencers in shaping the dietary preferences, tastes and decisions of their social media followers and turning them into brand advocates.

An online survey of 383 social media users, utilizing a self-administered questionnaire, was undertaken to validate the proposed research design. The partial least squares structural equation modeling (PLS-SEM) methodology was used to analyze the data and test the relationships between the constructs.

The results confirm the validity and reliability of the research model. The research revealed the positive influence of influencer–follower demographics and attitude congruence on followers’ food choices, which in turn leads to followers’ delight and significantly impacts their brand advocacy. It also depicts how followers’ perceived trust in an influencer mediates the relationship between their similarity with the influencers, their food choices and brand advocacy.

The study proposes a new theoretical framework and empirically tests the effectiveness of influencer marketing in influencing social media users’ food choice behavior and brand advocacy through the medium of followers’ congruence with social media influencers. The findings offer noteworthy theoretical and managerial implications for academicians as well as marketing practitioners.

Remote work has been intensifying in organizations, and the recent pandemic forced an immediate increase in it, ignoring its effect on the family. The purpose of this study was to analyze the work and personal-family life balance of Colombian workers during the lockdown and the effects on post-pandemic times.

Quantitative correlational study with a non-probabilistic sample of 1,069 participants: 349 (32.64%) men and 720 (67.35%) women.

A total of 44.8% of the participants reported that their work interfered with their personal life; 61.6% reported that their work exceeded their habitual time; 72.2% felt comfortable with the remote work; and women perceived more affectation, as did participants with children. No interaction was present between these variables. There are more interruptions for workers with children younger than 12 years.

There is satisfaction with remote work. However, there are difficulties regarding work-personal life balance that must be addressed to improve quality of life, with an emphasis on women and workers with children, especially younger children.

This study provides empirical evidence for the foundation of public and organizational policies aimed at managing remote work and the work-personal life balance to reduce the risk of loss of female labor force and effects on the quality of life of workers.

Studies on the work-personal life balance with Latin American samples are scarce. This research contributes to the literature about satisfaction with working from home modality and the work-personal life balance during COVID-19 confinement, with a look at the differences by gender and the evaluation of the family conditions of Colombian workers, contributing to a regional perspective.

The purpose of this paper is to present a hybrid modelling that combines concepts and techniques for scenario building together with a Multi-criteria Decision Aid (MCDA) outranking approach. The paper presents a case to illustrate the proposed methodology.

The research method is a qualitative and quantitative mixture and it is presented as a study case. Bibliographic research is used to construct the theoretical framework. There are a number of studies that develop a sensibility analysis in MCDA modelling; however, none of them explore the robustness of the MCDA solution with use of scenarios variation.

The methodology allows the criteria that must be taken into account, according to the decision makers’ values and preferences. It is interesting to note that, depending on the scenario, different weights were applied for each criterion, and the performances of alternatives under each criterion has changed as well.

This need arises in decision problems that are susceptible to the influence of scenario variation.

This proposal was applied to a real case that has taken into account six alternatives, with a prospective analysis of three scenarios, evaluated by four criteria. The authors use prospective scenarios to choose the criterion weights and alternatives evaluation.