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This study aims to provide a comprehensive overview of the current state of the art in powder bed fusion (PBF) techniques for additive manufacturing of multiple materials. It reviews the emerging technologies in PBF multimaterial printing and summarizes the latest simulation approaches for modeling them. The topic of “multimaterial PBF techniques” is still very new, undeveloped, and of interest to academia and industry on many levels.

This is a review paper. The study approach was to carefully search for and investigate notable works and peer-reviewed publications concerning multimaterial three-dimensional printing using PBF techniques. The current methodologies, as well as their advantages and disadvantages, are cross-compared through a systematic review.

The results show that the development of multimaterial PBF techniques is still in its infancy as many fundamental “research” questions have yet to be addressed before production. Experimentation has many limitations and is costly; therefore, modeling and simulation can be very helpful and is, of course, possible; however, it is heavily dependent on the material data and computational power, so it needs further development in future studies.

This work investigates the multimaterial PBF techniques and discusses the novel printing methods with practical examples. Our literature survey revealed that the number of accounts on the predictive modeling of stresses and optimizing laser scan strategies in multimaterial PBF is low with a (very) limited range of applications. To facilitate future developments in this direction, the key information of the simulation efforts and the state-of-the-art computational models of multimaterial PBF are provided.

Aim of the present monograph is the economic analysis of the role of MNEs regarding globalisation and digital economy and in parallel there is a reference and examination of some legal aspects concerning MNEs, cyberspace and e‐commerce as the means of expression of the digital economy. The whole effort of the author is focused on the examination of various aspects of MNEs and their impact upon globalisation and vice versa and how and if we are moving towards a global digital economy.

As I have reflected upon the last thirty years, since it was precisely thirty years ago that I started as a student at Stanford, I have wondered if there is an overall theme to how my professional career has unfolded and the role Stanford played in it. I believe Albert Bandura's (1982) paper, The Psychology of Chance Encounters and Life Paths, provides a good descriptive framework to work with. I am persuaded that at various points of time as I stood at the proverbial fork in the road, due to one chance factor or another, my decision was tipped one way. This is not to suggest that my career has been a sequence of random events; quite the contrary. While the specific fortuitous events occurred largely outside my control, my responses to them were quite systematic; some fortuitous events had lasting influence, and some even changed my life trajectory. But, what I am struck by, ex post, is that in 1973, as I was just finishing my undergraduate education in India, the ex ante probability of my ending up some years later as a professor at an Ivy League university was essentially zero. Yet, this did eventually happen.

During the coronavirus disease 2019 (COVID-19) pandemic and social distancing, the Virtual Mobility Program (Promover) implemented in 2021 in Brazil aimed to allow students enrolled in Brazilian federal universities to take curricular components at other institutions of the system remotely. The main objective of this research was to identify the most important factors, in students' perception, that affected their satisfaction with virtual mobility (VM) and the factors that drive the intention to continue mobility.

Data collection was performed through 433 questionnaires answered online. R software was used for descriptive analysis and SmartPLS to examine the relationship between independent and dependent variables through Structural Equation Modeling.

A positive relationship was verified between the constructs, and the hypothesized relations were confirmed at statistically significant level, revealing the students' satisfaction with VM and their intention to continue exploring this online learning option through Promover. The results showed that the motivations for VM are linked to the pursuit of knowledge and more opportunities for training and work. Plus, the use of VM proved to be a motivator for student engagement and e-learning effectiveness.

The findings can be useful as they highlight the opportunity to expand VM programs for students, even after the return to on-campus academic activities.

Although recent public attention has focused on boom-and-bust cycles in industries and financial markets, organizational theorists have made only limited contributions to our understanding of this issue. In this chapter, I argue that a distinctive strategic insight into the mechanisms generating boom-and-bust cycles arises from a focus on entrepreneurial inertia – the lag time exhibited by organizational founders or investors entering a market niche. While popular perceptions of boom-and-bust cycles emphasize the deleterious effect of hasty entrants or overvaluation, I suggest instead that slow, methodical entries into an organizational population or market may pose far greater threats to niche stability. This proposition is explored analytically, considering the development of U.S. medical schools since the mid-18th century.

One crucial but sometimes overlooked fact regarding the difference between observation in the cross-section and observation over time must be stated before proceeding further. Tempting though it is to draw conclusions about the dynamics of a process from cross-sectional observations taken as a snapshot of that process, it is a fallacious practice except under a very precise condition that is highly unlikely to obtain in processes of interest to the social scientist. That condition is known as ergodicity.

This paper examines whether affiliation strategies used by social movement organizations to establish institutional linkages assure survival. Several streams within both social movement and organization theories suggest contrasting expectations. Two core research questions are proposed: how does strategic affiliation, as well as increasing legitimation, alter social movement organizations’ longevity, and how does the evolution of the movement condition these dynamics? Our answer focuses on the self-help/mutual-aid movement and the institutionalization of national self-help/mutual-aid organizations. Analyses comparing economic, political and symbolic means of survival at the population-of-organizations level and organizational level, and across the history of the movement, show that professional and political alliances and legitimation impact the longevity of self-help/mutual-aid organizations in unexpected ways. For instance, as the number of political alliances at the population level increases, the likelihood of organizational survival declines, although political alliances at the individual organizational level are beneficial for an organization. These relationships change dramatically as the movement matures. Implications for integrating social movement and organizations theories are discussed.