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An issue when printing multi-material objects is understanding how different materials will perform together, especially because interfaces between them are always created. This paper aims to address this interface from a mechanical perspective and evaluates how it should be designed for a better mechanical performance.

Different interface mechanisms were considered, namely, microscopic interfaces that are based on chemical bonding and were represented with a U-shape interface; a macroscopic interface characterized by a mechanical interlocking mechanism, represented by a T-shape interface; and a mesoscopic interface that sits between other interface systems and that was represented by a dovetail shape geometry. All these different interfaces were tested in two different material sets, namely, poly (lactic acid)–poly (lactic acid) and poly (lactic acid)–thermoplastic polyurethane material pairs. These two sets represent high- and low-compatibility materials sets, respectively.

The results showed, despite the materials’ compatibility level, multi-material objects will have a better mechanical performance through a macroscopic interface, as it is based on a mechanical interlocking system, of which performance cannot be achieved by a simple face-to-face interface even when considering the same material.

The paper investigates the importance of interface design in multi-material 3D prints by fused filament fabrication. Especially, for parts intended to be subjected to mechanical efforts, simple face-to-face interfaces are not sufficient and more robust and macroscopic-based interface geometries (based on mechanical interlocking systems) are advised. Moreover, such interfaces do not raise esthetic problems because of their working principle; the 3D printing technology can hide the interface geometries, if required.

The aim of this paper is to understand the importance of endomarketing in organizations and whether internal strategies are essential in the management of human capital. Especially, it is intended to understand what kind of policies is adopted in the organizations the authors are dealing with, and also the perception that employees have about them.

The methodology adopted combines a quantitative and qualitative approach, based on documents analysis, and the survey and semi-structured interviews with questions alluding to endomarketing. The study was carried out in the (Portuguese) cities belonging to the Minho Quadrilateral, being Braga, Barcelos, Guimarães and Vila Nova de Famalicão, in which a total of five organizations are held.

The results seem to show that endomarketing has an essential role in human capital management, in particular, to obtain both individual and organizational results, where there is a mutual relationship. Of the 158 respondents that make up the sample, it was concluded that 78.5% considered the intrinsic factors related to well-being and happiness as important as the extrinsic factors related to monetary rewards.

The manuscript presents insights for internal marketing and human resource management (i.e. motivation and human capital). Based on the rapid and profound technological changes of the early 21st century, the concept of endomarketing emerged stimulated by globalization and by the greater concern to adopt strategies that were able to differentiate organizations in the markets.

This is an interdisciplinary theme, with contributions to both internal marketing and human resource management, bearing in mind to enhancing the value and well-being of organizational human capital. This study aims to contribute to the development of scientific knowledge in this area that is so relevant for growth and differentiation.

The purpose of this paper is twofold: to study the relationship between reverse knowledge transfer (RKT) and headquarters’ innovation, examining potential moderators of such relationship, and to analyze the role of headquarters’ absorptive capacity (AC) and the coordination mechanisms they adopt as antecedents of RKT.

Quantitative data were collected from 104 Spanish multinational companies. Structural equation modeling was used to test hypotheses.

Findings provide the evidence of a positive relationship between RKT and headquarters’ innovation. This relationship is higher when the knowledge transferred from subsidiaries to parent units is of a more tacit nature, and also when the organizational distance between them is larger. The results also show that the parent unit’s AC and the use of mechanisms for coordinating company units can facilitate RKT.

MNCs that wish to be more innovative should be aware that it is worth the effort of fostering RKT, especially when knowledge is more tacit and comes from subsidiaries with different organizational practices and culture because these two variables increase the positive relationship that it was found between effective RKT and the development of innovation in the headquarters. Additionally, results show that in order to facilitate RKT, the improvement of headquarters’ AC and the use of mechanisms of coordination between them and its subsidiaries can be useful.

Up to the authors’ knowledge, this is the first empirical study that examines the link between RKT and headquarters innovation, and one of the few that focuses on headquarters characteristics as determinants of RKT. Thus, the findings contribute to the literature that highlights the benefits of RKT for MNC’s competitiveness, and that seeks to know how to promote RKT.

In the academic field of business management, several potential theories were established during the last decades to explain companies' decisions, organizational behavior, consumer patterns, and internationalization, among others. As a result, businesses and scholars were able to analyze and decide based on theoretical approaches to explain the current conditions of the market. Secondary research was conducted to collect more than 36 management theories. This chapter aims to develop the most famous theories related to business applied in the international field. The novelty of this chapter relies on the compilation of recognized previous research studies from the academic literature and evidence in international business.