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Academic literature on the topic 'Industries agroalimentaires – Innovations technologiques – Tunisie'
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Dissertations / Theses on the topic "Industries agroalimentaires – Innovations technologiques – Tunisie"
Karaa, Meriam. "Les déterminants de l'adoption de la traçabilité par les entreprises de conditionnement de dattes en Tunisie." Thesis, Aix-Marseille 2, 2010. http://www.theses.fr/2010AIX24030/document.
Full textThe traceability is considered as an answer to the state of uncertainty due mainly to the foodcrises of the end of the XXth century. With the application of the European regulationsn°178/2002 on January 1st, 2005, all the actors of the food chain must be mobilized to bring the maximum of guarantee and insurance to the final consumers, in terms of quality and safety. In the case of the Tunisian date sector, the traceability - as an approach of strategic management- appears like a managerial innovation which always comes within the phase of adoption.Our research comes within the scope of this framework. The aim of this research is to identify the determiners of the adoption of an approach of traceability with the example of the companies of date conditioning in Tunisia. So we present a modelling by suggesting associating the theory of the stakeholders to the theory of diffusion and adoption of the innovation.We discuss three generic propositions of research put forward by basing on a qualitative analysis with conditioning date companies considered as "pioneers" in tunisian traceability.The results of this research end up in the elaboration of a set of determiners of the adoption of the traceability with in the conditioning date companies’ link in Tunisia. It represents the characteristics of the traceability, the characteristics of the organization and, the characteristics of the environment such as specified in our model, to which it is advisable to add the fourth element stemming from the analysis of the interviews and which concerns the transversal factors
Le, Bars Anne Anne. "Innovation sans recherche : les compétences pour innover dans les PME de l'agro-alimentaire." Grenoble 2, 2001. http://www.theses.fr/2001GRE21007.
Full textZitt, Michel. "Processus d'invention et leurs déterminants économiques dans les systèmes techniques : le cas de quelques grandes inventions agro-alimentaires." Paris 9, 1991. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=1991PA090012.
Full textThe thesis examines Jacob Schmookler's theory of demand-pull invention. After an analysis of technical systems and cases studies of invention in the food processing industry. Schmookler observes (econometric fold of the theory) that fluctuations of sectorial conjuncture anticipate fluctuations in technological production (patents). In order to explain it, he sketches a model of quasi-maximisation behavior for inventors (economic fold): the determining relationship actually is between profit of invention and dimension of the economic target, as soon as a strong elasticity of technical knowledge supply is statistically admitted. The scale of the targets is a ley issue, since the shortcomings of the model, particularly the problem of risk and uncertainty, grow with the dimension of the stakes and project. Examining the structure of technical systems may allow deepening the distinction radical incremental invention or core-periphery that is now usual in the evolutionist approach. In the view suggested here, local technical systems with strong constraints (specific industry), are immerged in a universe of exchanges and transfers. Every local system is considered as a hierarchy of embedded technico-organisational subsystems each of them being a target for invention-transfers from outside. This hierarchy rules the distribution of targets, and the processes of adaptation, learning, obsolescence and flexibility. Arguments of monographic and statistical nature (distribution of invention incomes) are discussed. In this scheme, for large scale inventions uncertainty and remote horizon could at the best justify a dependence of inventive decisions upon long range
Taïbi, Ghalia. "L'identification de l'imitation dans le secteur agroalimentaire français." Lille 1, 2005. https://ori-nuxeo.univ-lille1.fr/nuxeo/site/esupversions/a1d42c71-a747-450b-8fd0-5739e8256f62.
Full textMost of the literature on imitation comes from sociology, psychology or economics. We discuss rarely about business imitation. The large body of research on imitation remains fragmented. The aim of this work is to unify all the contributions from the others disciplines in a "theory" and to link imitation with competitive advantage. The research points out many elements to identify the concept of imitation, the strategy, the profile of imitator and its targets, why and how (methods and sources of informations) to imitate in food industry. Finally, we confirm that imitation could be a good practice
Ziegelbaum, Hélène. "Nouvelles approches dans la recherche d'innovation en agroalimentaire : mise au point et valorisation de nouvelles procédures pour mieux connaître la perception des produits alimentaires par les consommateurs." Aix-Marseille 3, 1998. http://www.theses.fr/1998AIX30110.
Full textChantrel, Étienne. "Croissance, concurrence et TIC." Thesis, Paris, ENST, 2013. http://www.theses.fr/2013ENST0091/document.
Full textPolitical discourse is imbued with an obsession for economic growth. The main determinant of long-term growth in endogenous growth theory is innovation, but the institutional environment of economic activity is also an important explanatory factor. In particular, within this environment, competition plays a major, though controversial, role. The purpose of this thesis is to study some aspects of growth, of its determinants and of policies that seek to promote it. Two aspects in particular will be studied, innovation and competition. The first part focuses on two types of policies aimed at encouraging innovation. The first policy is direct government support, studied through an analysis of the impact of the Research Tax Credit (Chapter 1). The second policy considered is the legal framework for innovation (Chapter 2). The theoretical model presented intends to take into account new practices in intellectual property law. The second part deals with the institutional environment in general, and in particular competition. It starts with an international comparison of the level of competition between France and several European countries in various sectors, using an econometric method based on growth equations (Chapter 3). Two sectors are then analyzed in detail : the food industry (Chapter 4), where the balance of power has been tipped in favour of large retailers, and accomodation and food services activities (Chapter 5)
Villegas, Lopez Javier A. F. "« Les mutations de la restauration : entre cuisine classique et cuisine collective, des enjeux de métier : des outils, des pratiques et des représentations culinaires »." Paris, EHESS, 2012. http://www.theses.fr/2012EHES0060.
Full textThe cooking profession has been profoundly transformed by the evolution of technology and the industrialization of community kitchens ("central kitchens", machines, utensils, cooking techniques, products. An ethnographic approach, including a cook’s vocational training certificate and work in several types of catering businesses, has provided first-hand experience over the long term. This ethnography provides an analysis of the practices, representations, aspirations and questions of cooks facing the switch from classical cooking to the assembly kitchen. It leads to questioning the evolution of the profession, the image of professionals, the terms “tradition” and “gastronomy”, and to envision the future and ways the cooking profession could improve its image
Drougard, Marion. "Compréhension et contrôle de la morphologie des champignons filamenteux en culture liquide." Thesis, Paris, Institut agronomique, vétérinaire et forestier de France, 2018. http://www.theses.fr/2018IAVF0019.
Full textBiotechnology has for many years operated a large collection of microorganisms in food and health sectors. Today, this field fits perfectly into the ecological transition of chemical and environmental sectors, by designing high-performance processes to replace petroleum products. Filamentous fungi represent important organisms in industrial biotechnologies, widely used for the production of metabolites with strong commercial interests such as antibiotics, enzymes or organic acids. Their implementation in submerged environment is continually attracting new research to overcome issues associated with their behavior. Indeed, this mode of cultivation generates different fungal morphologies, mainly dependent on their intrinsic biological properties but also on physico-chemical conditions within their environment. This characteristic of filamentous fungi very often influences their implementation and their productivity.This thesis proposes an original study to identify and control the underlying phenomena that influence fungal morphogenesis. To this end, we propose research combining fundamental and applied studies on several strains of strong industrial interest. We have investigated and developed various pioneering techniques for the control of fungal morphology. Microparticles implementation and development of a microfluidic encapsulation technique allowed us to confirm and deepen the aggregation mechanisms of fungal conidia. On the other hand, the addition of mineral salts in the culture medium prevented hyphae aggregation. To validate an extrapolation of these results towards an industrial process, these tools were also implemented during the first steps of scale-up. These works bring results and perspectives in the control of bioprocesses involving filamentous fungi
Ernez, Molka. "Rôle de la dynamique de l'innovation dans l'optimisation de la relation de sous-traitance. Cas de l'industrie textile habillement tunisienne." Phd thesis, Université Paris-Est, 2011. http://tel.archives-ouvertes.fr/tel-00630971.
Full textMonnet, Anne-Flore. "Optimisation de la transformation de matières premières issues de cultures associées légumineuse - blé tendre par une bonne connaissance de la physico-chimie des ingrédients et du procédé de fabrication." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLA031/document.
Full textMixing wheat and legumes is a promising way of developing sustainable agricultural practices in addition to supplying proteins of good nutri-tional quality. Food chains for the valorization of wheat-legume intercrops could be designed to handle such a mixture right up to the production of cereal products enriched with legume flour. This would involve monitoring the variability of the raw materials used by the secondary processing industry. The aim of this work was to develop a tool to enable the monitoring of the quality of cakes enriched with legume flour regardless of variations in flour quality, by using the processing variables. The quality of soft cakes is defined by their structural properties at different length scales. After characterization of the variable properties of flour and of the manufacturing process, a multi- objective model for the monitoring of cake quality was built thanks to an optimal experimental design. The prediction capacity of the model was validated, and its correction efficiency was confirmed both instrumentally and sensorially in two case studies involving variations in the proportions and particle sizes of wheat and legume in the flour. Following a discussion of the sustainability of the food chain as a whole, the knowledge acquired during the course of this study was used to make recommen -dations concerning the upstream stages of the chain (selection, cultivation, sorting, first processing) using a reverse engineering approach