Banque Populaire

Potential competing interests: No potential competing

Abstract The development of qualitative research methods addresses the need to explore, understand and interpret complex and subjective phenomena across various fields of study. These methods are guided by methodological frameworks, and data collection involves taking several precautions for observation or interviews. While these guidelines facilitate an emphasis on the objective aspects of discourse, accounting for subjectivity and emotions proves more challenging. However, these subjectivity and emotions are deemed as significant sources of information. In this chapter, we propose an innovative data collection method centred around creating collages and engaging in group discussions to decipher their meaning. Collage serves as a visual medium, and we recommend utilising semiotic analysis tools to comprehend its significance. To gain a more precise understanding of the value of collage as a data collection method, we studied a collage workshop organised by CREE. Through image analysis and exchanges, our findings reveal that collage acts as a physical medium that fosters exchanges, deepens ideas and restricts digressions. Additionally, collage allows for the expression and discussion of emotions linked to the image rather than the individual. The space of intersubjective reflexivity facilitated by collage enables a profound comprehension, critical assessment and augmentation of ideas and the interpretation of emotions without compromising the sensitivity of the author. This chapter’s main contribution is evidently manifested here.

The study of nonlinear systems has been the subject of numerous publications. When controlling the symmetry of chaotic oscillators, it has been observed that the symmetrical structure of the diode-bridge memristive emulators is continuously modified to break the symmetry of its current–voltage characteristic. This allows the nature of the symmetry of the oscillator in which they are incorporated to be influenced. In this paper, we present a simple memristive emulator based on simple electronic elements. This new emulator enables a simplified symmetry control method. By varying a control resistor, we modify the symmetry of the current–voltage characteristic of the memristor emulator and thus the symmetry of Chua oscillator in which it is incorporated as nonlinear component. Using dynamical systems analysis tools such as bifurcation diagrams and Lyapunov spectra, we describe how by simply varying a control parameter the symmetry is gradually broken. We highlight striking dynamic properties such as the coexistence of multiple symmetric and asymmetric oscillations and antimonotone bifurcations as well. Laboratory experimental studies are carried out to support the theoretically obtained results.

Les relations franco-serbes pendant la Grande Guerre ont été marquées par l'alliance et l'amitié, particulièrement après 1915.Les Français contribuent à aider l'armée serbe à récupérer après la traversée de l'Albanie et organisent le transport par les bateaux de Corfou jusqu'à Thessalonique.Les deux dernières années de guerre ont

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Data we collect and use in organisation and management studies look like ‘cold cases’. We want to offer more conversations, interpretations, arguments and even disputes. The ‘Interpreters’ is a nexus where academics invite colleagues and friends to analyse and discuss freely an argument, raw data, cases and qualitative materials.

Mesenchymal stem/stromal cells (MSCs) are a promising tool for cell-based therapy thanks to their ability to secrete trophic factors and immunomodulatory potential. So far, these cells are used to treat a variety of inflammatory diseases like sepsis or severe graft-versus-host disease (GvHD). Considering the number of cells required for their use in cell therapy (between 1–3 × 106 cells/kg), a primary expansion is necessary. However, after an intravenous injection, few cells are found in tissue lesion or in bone marrow. One hypothesis is that chemotactic signals that guide MSCs to an appropriate environment would be altered during in vitro expansion. It is therefore essential to define better conditions of expansion, particularly with good manufacturing process, to obtain enough MSCs, while preserving their immunomodulatory properties and expression of migration molecules. The aim of this research project is to investigate the effect of cell confluence on migration potential and immunological properties of Wharton’s jelly (WJ) MSCs. This research is investigated with 3 levels confluency, at 50, 80 and 100% of confluence by using good manufacturing practice (GMP). We found a better expression of immunomodulatory molecules (PD-L1) and migratory molecules (CD44, membrane CXCR7) for cells that reached 50% confluence. Furthermore, co-stimulatory molecules appear to be less expressed when MSCs are at low confluency. In conclusion low confluence culture should be privileged to improve immunomodulatory and migration phenotype.