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The term “externalization” is used by a range of migration scholars, policy makers and the media to describe the extension of border and migration controls beyond the so-called ‘migrant receiving nations’ in the Global North and into neighboring countries or sending states in the Global South. It refers to a wide range of practices from controls of borders, rescue operations, to measures addressing the drivers of migration. The ambition of this Special Issue is to contribute to the mapping of the responses to externalization dynamics. The different articles in this volume are chosen to exemplify some of these processes at different levels of analysis. Through diverse disciplinary perspectives, the authors show how practices of externalization are being confronted, succumbed, modified and contested by individual (would-be) migrants, civil society actors and the host states’ institutions in different parts of the globe. In an effort to move away from a sole focus on border zones in the Global North, the Special Issue contributes to emerging literature shifting the locus of analysis to places in the Global South, which are conventionally understood as “transit” or “sending” countries in Africa, America as well as within Europe itself.

The personal digital twin extends to individual persons, a concept that originated in engineering to twin complex machines with a digital simulation containing a model of its functions to monitor its past and present behaviour, and repair, correct, improve or otherwise ensure its optimal operation. Several independent trends in technological developments are seen to converge towards the elaboration of the digital replication of individual human data and life history, notably in health industries. Among the main ones, we consider the ubiquitous distribution of digital assistants, the rapid progress of machine learning concurrent with the exponential growth of ‘personal’ Big Data and the incipient interest in developing lifelogs. The core hypothesis here is that among the psychological effects of the digital transformation, the externalization of cognitive faculties such as memory, planning and judgement, the decision-making processes located within the human person are also emigrating to digital functions, perhaps as a prelude to a later re-integration within the person via brain–computer interfaces. The paper concludes with ethical considerations about these ongoing developments. This article is part of the theme issue ‘Towards symbiotic autonomous systems’.

In this paper, we suggest that internalization theory might be extended by incorporating complementary insights from GVC theory. More specifically, we argue that internalization theory can explain why lead firms might wish to externalize selected activities, but that it is largely silent on the mechanisms by which those lead firms might exercise control over the resultant externalized relationships with their GVC partners. We advance an explanation linking the choice of control mechanism to two factors: power asymmetries between the lead firms and their GVC partners, and the degree of codifiability of the information to be exchanged in the relationship.

Open innovation is a consequence of globalization. Companies that wish to prosper can no longer do everything within them. The challenges of today and those of tomorrow are becoming more and more complex and the same company cannot do everything alone. Yes, open innovation is now daily; it is present in schools, large groups and start-ups. This is how we progress better today, by helping each other. Conversely, closed innovation consists of keeping your project confidential, which limits the possibilities of development but also the risk of project theft. In this paper, we discuss some analysis and we propose a survey of open innovation ecosystems and practices within six European countries, which will have an impact on regional level as regional policy recommendations. Open innovation consists of de-compartmentalising the company's innovation process, by opening up some or all of the phases of its innovation process to other company departments or even other companies (suppliers, customers or other partners ) [1-5]. As a result, it is not only the search for a technical solution or its validation that is concerned. The business model can be questioned, such as the selection criteria for ideas and solutions, as well as the validation criteria. Open innovation has as its main limitation the confidentiality of the business model resulting from this innovation (how to hide from other stakeholders the mechanisms that make the innovation have a positive impact on profitability and externality factors) as well as the company's development strategy (its differentiating factor, especially in the short term, where innovation is mainly used).

Sound externalization, or the perception that a sound source is outside of the head, is an intriguing phenomenon that has long interested psychoacousticians. While previous reviews are available, the past few decades have produced a substantial amount of new data.In this review, we aim to synthesize those data and to summarize advances in our understanding of the phenomenon. We also discuss issues related to the definition and measurement of sound externalization and describe quantitative approaches that have been taken to predict the outcomes of externalization experiments. Last, sound externalization is of practical importance for many kinds of hearing technologies. Here, we touch on two examples, discussing the role of sound externalization in augmented/virtual reality systems and bringing attention to the somewhat overlooked issue of sound externalization in wearers of hearing aids.

Generative AIs have been embraced by learners wishing to offload (parts of) complex tasks. However, recent research suggests that AI users are at risk of failing to correctly monitor the extent of their own contribution when being assisted by an AI. This difficulty in keeping track of the division of labor has been shown to result in placebo and ghostwriter effects. In case of the AI-based placebo effect, users overestimate their ability while or after being assisted by an AI. The ghostwriter effect occurs when AI users do not disclose their AI use despite being aware of the contribution made by an AI. These two troubling effects are discussed in the context of the conflict between cognitive externalization and anthropomorphization. While people tend to offload cognitive load into their environment, they also often perceive technology as human-like. However, despite the natural conversations that can be had with current AIs, the desire to attribute human-like qualities that would require the acknowledgment of AI contributions appears to be lacking. Implications and suggestions on how to improve AI use, for example, by employing embodied AI agents, are discussed.

The article highlights international dimensions of the emergence and transformation of migration policies in Turkey from the early 2000s onwards, including the context of the Syrian displacement, which made Turkey the top refugee hosting country in the world. While the transformation of migration governance in Turkey has widely been discussed, the effects of externalization on Turkey have remained focused on foreign policy and Turkey-EU relations. Only recently has the research explored the socio-legal implications of migration governance in terms of the emergence of categorizations leading to differentiated inclusion of migrant groups. The article establishes the historical and conceptual link between technocratic responses to externalization dynamics and the emergence of differentiated legal status. The article argues that measures of externalization brought a technocratic approach to migration governance. As a result, the complex, controversial aspects of the externalization process, such as the production of differentiated legal statuses amongst migrant communities with protection needs, have so far been overshadowed.

The present paper examines possible benefits of spatial audio guides on learning outcomes in the spatial learning setting of an experimental exhibition and attempts to differentiate between different mechanisms underlying such an effect. In Experiment 1, we examined whether the spatial contiguity principle may be such a mechanism. A spatial audio guide was used that allows for perception of audio explanations either at the location of the exhibit (audio-visuo-spatially close) or within the headphones (audio-visuo-spatially distant). The results showed that with the external, exhibit-located compared to headphone-located presentation, memory of audio explanations was significantly better. No significant differences were found regarding text-picture-integration. However, these results cannot only be explained by audio-visuo-spatial contiguity but also by externalization and audio-spatial cueing. In Experiment 2, we therefore tried to disentangle these possible mechanisms and compared three conditions (audio explanations perceptually located within the exhibits, behind the visitors at the opposite wall, always at the same location in the room), thereby keeping externalization constant while varying audio-visuo-spatial contiguity and audio-spatial cueing. No significant differences between the conditions were found regarding memory of the audio explanations and text-picture integration, whereby memory of audio explanations in all conditions was at the same level as in the picture-located audio condition in the first experiment. This excludes spatial contiguity effects and audio-spatial cueing as explanations for the results in Experiment 1 and indicates a general externalization effect needing closer examination. The results are discussed regarding future studies and the use of spatial audio guides in museums and exhibitions.

Human mobility has always been a pre-condition for human development, yet few issues today remain subject to such elaborate legal restrictions. The Schengen acquis is exemplary of this as a composite network of legalities that extend over a broad range of human activities. This Article pioneers legal infrastructures as an analytical tool to bring into focus law’s fundamental role in shaping human (im)mobility. Section II sets the theoretical frame by conceptualizing Schengen as a legal infrastructure through a brief tour through the scholarly field of infrastructural studies. Section III then traces the emergence of the Schengen legal infrastructure through historical iterations of physicality, accretion, and entanglement. Section IV further shows how Schengen has transformed to actively mediate human mobility and normative frameworks also outside the European space. Part IV concludes briefly on the implications of our analysis for understanding Schengen as a cornerstone of European mobility law.

Taking the perspective of the Central and West African women blocked at the Moroccan-Spanish border, reveals how EU policies, in exporting their anti-migrant war to African countries, seem to have reinforced a continuum of male dominance: by creating, along the migratory route, a succession of spaces where African women must resist and/or succumb to multiple relations of power and domination in order to be able to cross the securitized borders, controlled by a plurality of actors but often all men. Breaking with binary and essentialist views that often present them as merely passive subjects of their migration, the women interviewed disclose hidden mechanisms and effects of the externalization of EU migration control policies on the bodies and lives of those who fight for their freedom of movement. Based on 30-months of ethnographic research in Morocco and the Spanish enclaves of Ceuta and Melilla, this article aims to show how EU border externalization provokes racialized and gendered vulnerabilization of people seeking mobility and notably reinforces gender-based violence against migrant women. There are several levels of violence against women seeking mobility at borders, we will focus on two: violence emanating from certain men who are part of the organization of the crossing, and violence exerted by the States policing the border. Both of these cases illustrate the interaction between mobility control policies and control over women’s bodies as an effect of border externalization.