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Food system is complex and encompasses stakeholders from local, regional, and global level. The activities and outcomes of the food system are associated with environmental, economic, and social impacts. Due to the growing population, and urbanization, along with the fact that global food system contributes up to 30% of anthropogenic GHG emission, one of the main contributors to climate change, a sustainable food system that could meet the food demand in the urban areas is in need. Therefore, high-tech urban agriculture (HTUA) that uses advanced technologies and enables food production in a controlled environment is seen as a promising solution, which remains niche in Sweden. This study adopted the sustainable food system approach and used the theory of multi-level perspective (MLP) on sustainability transitions to explore this technology-driven transition and identify the challenges and opportunities in developing HTUA in Sweden. Through the analysis of five Swedish policy documents and interviews with four HTUA initiatives in Stockholm, three main aspects are identified: 1) external context; 2) policy environment; and 3) communication and influence, which are independent but also interconnected. According to the findings, the global environment and Swedish context, such as climatic condition and Swedish consumption, provide HTUA an opportunity to develop. The findings also suggest that though the characteristics of HTUA initiatives and the priorities within the Swedish policy environment have overlapping traits, the policies are not effectively translated into practice and thus making it challengeable to develop HTUA in the long run. Implementing more strict restrictions and regulations on the external price, providing an easier access to urban space, simplifying the procedure for the financial support, raising public awareness towards HTUA, and bridging the knowledge gap among all stakeholders through collaborations and partnerships are suggested to reduce the risk of initiating HTUA. However, further research is still required to understand the potential of HTUA in the transformation towards a sustainable food system.

Gli obiettivi della presente tesi sono di analizzare, nei bambini con sviluppo tipico e atipico, la costruzione dell'intersoggettività attraverso l'uso di oggetti nello sviluppo atipico (ASD) e attraverso l'interazione con un robot umanoide nello sviluppo tipico. Per quanto riguarda i robot umanoidi, il problema è osservare la possibile attribuzione di caratteristiche simili all'uomo a un robot che possa rendere l'interazione uomo-robot simile all'interazione uomo-uomo che è una classica interazione intersoggettiva per la presenza di due soggetti umani. Questo scopo viene indagato considerando due quadri teorici: 1) la Teoria della Mente che spiegano la costruzione dell'intersoggettività attraverso l'attribuzione di stati mentali ad altri; 2) Prospettiva socio-materiale che postula che in molti casi la costruzione dell'intersoggettività sia mediata dagli oggetti. Quindi, la domanda che sorge in questa dissertazione sui robot umanoidi è: cosa succede quando l'oggetto mediatore (il robot) è anche il partner interattivo. Per raggiungere questo scopo, la presente tesi investiga due temi principali: 1) i modelli di interazione con e l'attribuzione di una mente a un robot da parte di bambini con sviluppo tipico; 2) i modelli di interazione nello sviluppo atipico - bambini autistici - in un'interazione bambino-adulto mediata da oggetti. Il primo tema viene analizzato in una prospettiva teorica e un approccio metodologico innovativi, che porta a una comprensione dell'interazione bambino-robot. La prospettiva teorica collega il ruolo della Teoria della Mente alll'HRI; l'approccio metodologico osserva le strategie decisionali dei bambini nell'HRI, confrontando questi modelli comportamentali quando i bambini interagiscono con un essere umano e con un robot. Il secondo tema della tesi riguarda il ruolo dell'oggetto come mediatore della relazione tra bambini autistici e adulti. Questo viene studiato attraverso la prospettiva socio-materiale che suggerisce che le caratteristiche materiali degli oggetti e le loro qualità sociali intrinseche siano strettamente connesse. / The aims of the present dissertation are to analyse, in children with typical and atypical development, the construction of the intersubjectivity through the use of objects in atypical development (ASD) and through the interaction with a humanoid robot in typical development. About the humanoid robots, the issue is to observe the possible attribution of human-like features to a robot that can make the human-robot interaction similar to the human-human interaction that is a classic intersubjective interaction because of the presence of two human subjects. This purpose is investigated considering two theoretical frameworks: 1) Theory of Mind that explain the construction of the intersubjectivity through the attribution of mental states to others; 2) Socio-material perspective which postulates that the construction of the intersubjectivity is mediated by objects in many cases. Thus, the question arises in this dissertation about the humanoid robot is: what happen when the mediator object (the robot) is also the interactive partner. To achieve this purposes, the present thesis studies two main topics: 1) the interactional patterns with and the attribution of a mind to a robot by typically developing children; 2) the interactional patterns in atypical development - autistic children - in a child-adult interaction mediated by objects. The first topic is analysed in an innovative theoretical perspective and a through novel methodological approach, leading to an innovative understanding of the child-robot interaction. The theoretical perspective connects the role of Theory of Mind in HRI; the methodological approach observes children’s decision-making strategies in the HRI, comparing these behavioural patterns when children interact with a human and with a robot. The second issue of the thesis is about the role of the object as mediator of the relationship between autistic children and adults. This is studied through the Socio- material perspective that hypothesised that material features of the objects and their intrinsic social qualities are strictly connected.

Nombreux sont ceux à considérer que depuis le développement de la médecine curative, la prévention a occupé une place secondaire dans le système de santé français. La préoccupation majeure aurait été jusque-là d’assurer un accès aux soins plutôt que de favoriser une culture de la prévention. Depuis quelques années, les différents drames sanitaires (transfusion sanguine, amiante, canicule, hormone de croissance, épidémies de grippe, cancers,...) ont sensibilisé l’opinion à la notion de “sécurité sanitaire” et fait émerger une prise de conscience nouvelle autour des problématiques de la prévention. Le recours à la prévention permet aux individus et aux pouvoirs publics d’exercer un contrôle sur les risques de santé auxquels ils sont exposés et de mener des actions conséquentes dans le but d’améliorer l’état de santé en évitant l’apparition, le développement ou l’aggravation des maladies ou des accidents tout en favorisant des comportements individuels et collectifs pouvant contribuer à réduire les risques sanitaires. Une des réponses face aux risques de santé est d’inciter les individus à plus de prévention car ils ne sont plus seulement consommateurs de soins mais aussi producteurs de leur état de santé. Quel est donc le rôle des individus et quelle est la part de responsabilité dévolue à chacun dans la prévention des risques sanitaires ? De plus, la prévention des risques sanitaires s’inscrit dans un environnement d’ambiguïté et d’incertitudes car les risques auxquels sont exposés les individus sont diversement nombreux et pas toujours bien connus. Il n’est donc pas aisé de relier avec certitude un facteur de risque et un effet sanitaire pour ainsi adopter un comportement de prévention adéquat. Dans ce contexte d’incertitude, de nombreux modèles d’aide à la décision, ou de représentations des préférences ont été proposés ces dernières années (Klibanoff et al.(2005), Bleichrodt et Eeckhoudt(2006) Machina(2009), Etner et al.(2011)). Cette thèse analyse les comportements de prévention des individus face à des risques de santé tout en mettant l’accent sur les politiques publiques de prévention proposées. Elle consiste d’une part à des études théoriques des comportements de prévention et de gestion des risques sanitaires en utilisant des modèles récents de préférences. Ce travail analyse le comportement des individus qui doivent prendre des mesures de prévention pour protéger leur propre santé dans un contexte d’incertitude. D’autre part, elle se consacre à une étude empirique pour cerner les perceptions et informations qu’ont les individus en termes de risque de santé. En outre, tout au long de ce travail, nous avons cherché à étudier la pertinence du modèle théorique élaboré au regard des politiques pratiquées. Le premier chapitre présente les principes de modélisation des décisions économiques en présence d’un risque de santé plus ou moins bien connu. Après avoir détaillé lesdifférentes approches dans les modèles de décisions dans le risque et dans l’incertain, nous avons mis en relief l’importance de l’introduction de variables bidimensionnelles (ou multidimensionnelles) dans le modèle de choix pour permettre de rendre de l’environnement multidimensionnel des risques de santé. Le deuxième chapitre est une étude originale proposée sur l’analyse de la prévention en santé lorsque les individus présentent de l’aversion à l’ambiguïté. Dans ce chapitre, nous avons étudié les comportements individuels de prévention face à une incertitude sur l’état de santé et avons montré que l’aversion à l’ambiguïté incite les individus à faire plus de prévention primaire et secondaire sous l’hypothèse d’une utilité marginale de la richesse croissante avec l’état de santé. (...) / Many are those to consider that since the development of the curative medicine, the prevention occupied a secondary place in the French health care system. Major concern would have been up to that point to ensure an access to healthcare rather than to support a culture of prevention. Since a few years, various medical dramas (blood transfusion, asbestos, heat wave, growth hormone, flu epidemics,cancers,...) have raised awareness of the concept of “safety” and brings out a new awakening around the prevention problems.The use of prevention allows the individuals and the public authorities to exert a control on the health risks to which they are exposed and to conduct consequent actions in order to improve health and prevent the emergence, the development, the development or the aggravation of the diseases or accidents while promoting individual and collective behaviors that can help to reduce the risk health. One of the answers in front of the health risks is to incite the individuals to more prevention because they are not only consumers of care, but also producers of their health. What is the role of individuals and what is the share of responsibility reserved for each one in the prevention of health risks ? In addition, the prevention of health risks is part of an environment ambiguity and uncertainty because the risks to which are exposed individuals are many different ways and not always well known. It is thus not easy to connect with certainty a risk factor and a health effect for adopting an adequate prevention behavior. In this context of uncertainty, many support the decision models or representations of preferences have been proposed in recent years (and Klibanoff (al. (2005), and Bleichrodt Eeckhoudt (2006), Machina 2009), Etner et al. (2011)).This thesis analyzes the individual behaviors of prevention in front of health risks while focusing on the public policies of prevention proposed. It consists on the one hand in theoretical studies of the behaviors of prevention and management of the health risks by using recent models of preferences. This work analyzes the behavior of the individuals who need to take preventive measures to protect their own health in a context of uncertainty. On the other hand, it is devoted to an empirical study to determine perceptions and information which have the individuals in terms of risk of health. Moreover, throughout this work, we sought to examine the relevance of the theoretical model developed with regard to the policies practiced. The first chapter presents the principles of modeling economic decisions in the presence of a more or less well known health risk. After detailing the different approaches in models of decisions under risk and uncertainty, we have highlighted the importance of the introduction of two-dimensional variables (or multidimensional) in the model of choice to allow to report the multidimensional environment of health risks. The second chapter is an original proposed study on the analysis of preventive health when the individuals have an aversion to ambiguity. In this chapter, we studied individual behavior of prevention in front of an uncertainty on the health status and have showed that aversion to ambiguity encourages the individuals to make more primary and secondary prevention under the assumption of a marginal utility of the increasing wealth with the health status. (...)