The concept of traditionality for food products

Food companies often meet problems when they innovate on traditional products. The apprehension onconsumer‘s perception ofa food product‘s traditional character remains unclear despite the research conducted in marketing. The barriers to innovation for this type of product could be identified through the definition of traditionality perceived by the consumer. The purpose of this research is to define the concept of perceived traditionality one hand and, secondly, to distinguish the traditionality from other concepts such as typicality, authenticity or local produce. From a literature review conducted by systematic research on different databases, we propose a concept of traditionality. This concept of traditionality combines the ritual and the object The concept of traditionality for food products (PDF Download Available). Available from: https://www.researchgate.net/publication/291808708_The_concept_of_tradit... [accessed Mar 12 2018]

Traditionnalité, Traditionnalité perçue : proposition d’un concept pour les produits alimentaires

Revisiter les produits traditionnels est souvent problématique pour les entreprises agroalimentaires concernées. Les recherches conduites en marketing sur des produits traditionnels ne permettent pas d’appréhender la perception du caractère traditionnel des produits alimentaires par les consommateurs. Pourtant, la définition de la traditionnalité perçue par le consommateur permettrait d’identifier les barrières à l’innovation pour ce type de produit. L’objet de notre recherche est ainsi d’appréhender le concept de traditionnalité perçue à partir d’une revue de littérature. Elle montre que l’association entre le rituel et l’objet est un élément constitutif de la traditionnalité. La traditionnalité des produits alimentaires (PDF Download Available). Available from: https://www.researchgate.net/publication/291808768_La_traditionnalite_de... [accessed Feb 22 2018]

The perceived traditionality of a food product : an approach by the grounded theory

To understand the concept of traditionality a literature review was conducted in management sciences, humanities and social sciences. By the method of Grounded Theory we propose the structuring of the concept of perceived traditionality of a food product. This concept consists of four dimensions: processual, identity, dynamic and experiential. On the theoretical level, these findings allow to specify what is perceived by consumers as traditional. From a managerial point of view, knowing the perception of the traditionality of a food product could help this type of product to become more competitive on the market

Le concept de traditionalité des produits alimentaires

Food companies often meet problems when they innovate on traditional products. The apprehension onconsumer‘s perception ofa food product‘s traditional character remains unclear despite the research conducted in marketing. The barriers to innovation for this type of product could be identified through the definition of traditionality perceived by the consumer. The purpose of this research is to define the concept of perceived traditionality one hand and, secondly, to distinguish the traditionality from other concepts such as typicality, authenticity or local produce. From a literature review conducted by systematic research on different databases, we propose a concept of traditionality. This concept of traditionality combines the ritual and the object

Increased glutamine in leaves of poplar transgenic with pine GS1a caused greater anthranilate synthetase α-subunit (ASA1) transcript and protein abundances: an auxin-related mechanism for enhanced growth in GS transgenics?

The initial reaction in the pathway leading to the production of indole-3-acetic acid (IAA) in plants is the reaction between chorismate and glutamine to produce anthranilate, catalysed by the enzyme anthranilate synthase (ASA; EC 4.1.3.27). Compared with non-transgenic controls, leaves of transgenic poplar with ectopic expression of the pine cytosolic glutamine synthetase (GS1a; EC 6.3.1.2) produced significantly greater glutamine and significantly enhanced ASA α-subunit (ASA1) transcript and protein (approximately 130% and 120% higher than in the untransformed controls, respectively). Similarly, tobacco leaves fed with 30 mM glutamine and 2 mM chorismate showed enhanced ASA1 transcript and protein (175% and 90% higher than controls, respectively). Furthermore, free IAA was significantly elevated both in leaves of GS1a transgenic poplar and in tobacco leaves fed with 30 mM glutamine and 2 mM chorismate. These results indicated that enhanced cellular glutamine may account for the enhanced growth in GS transgenic poplars through the regulation of auxin biosynthesis

A New Pipeline for the Normalization and Pooling of Metabolomics Data

Pooling metabolomics data across studies is often desirable to increase the statistical power of the analysis. However, this can raise methodological challenges as several preanalytical and analytical factors could introduce differences in measured concentrations and variability between datasets. Specifically, different studies may use variable sample types (e.g., serum versus plasma) collected, treated, and stored according to different protocols, and assayed in different laboratories using different instruments. To address these issues, a new pipeline was developed to normalize and pool metabolomics data through a set of sequential steps: (i) exclusions of the least informative observations and metabolites and removal of outliers; imputation of missing data; (ii) identification of the main sources of variability through principal component partial R-square (PC-PR2) analysis; (iii) application of linear mixed models to remove unwanted variability, including samples' originating study and batch, and preserve biological variations while accounting for potential differences in the residual variances across studies. This pipeline was applied to targeted metabolomics data acquired using Biocrates AbsoluteIDQ kits in eight case-control studies nested within the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort. Comprehensive examination of metabolomics measurements indicated that the pipeline improved the comparability of data across the studies. Our pipeline can be adapted to normalize other molecular data, including biomarkers as well as proteomics data, and could be used for pooling molecular datasets, for example in international consortia, to limit biases introduced by inter-study variability. This versatility of the pipeline makes our work of potential interest to molecular epidemiologists

Filtrage et contraction des hyperboles de diffraction

Il arrive très souvent que les enregistrements acoustiques faits en mer présentent des hyperboles de diffraction ; celles-ci apparaissent lorsque l'on dispose côte à côte les enregistrements fonction du temps obtenus en différents points. Elles sont engendrées, soit par des corps flottant dans l'eau, soit par des irrégularités du fond, soit par des lèvres de faille, etc... Il est possible, en appliquant à ces enregistrements un traitement numérique qui utilise les propriétés de l'holographie, de contracter toutes ces hyperboles et de ne conserver que les points diffractants qui leur ont donné naissance. On montre des restitutions de points diffractants qui se trouvent les uns isolés, les autres voisins d'objets réfléchissants, tant sur des exemples synthétiques que sur des enregistrements réels obtenus en mer

Traitement hybride de photographies aériennes

Une photographie aérienne classique contient une information représentée par plusieurs millions de bits, ce qui n'est pas sans poser des problèmes pour le traitement numérique. Aussi est-il intéressant d'associer aux filtrages numériques des procédures analogiques, soit pour lés essais et les déterminations des réglages optimaux, soit pour le traitement lui-même: On montrera plusieurs exemples d'applications, et en particulier des recherches d'alignements permettant de faire ressortir des accidents géologiques. Ces travaux ont été menés par utilisation conjointe de méthodes optiques et de méthodes numériques. Le choix entre ce qui doit être fait optiquement et ce qu'il est raisonnable de faire numériquement est chaque fois l'objet d'un compromis entre commodité et prix du traitement, qualité du résultat, but recherché ...