Search results for "VALUATION"

Une nouvelle approche de la réussite dans les MOOC : confronter les usages aux comportements réels pour adapter/repenser les indicateurs de l'évaluat…

2019

International audience; L'évaluation dans les MOOC a été réalisée de manière privilégiée à l'aide des learnings analytics, autant de traces numériques enregistrant l'ensemble des actions réalisées par un inscrit dans le dispositif. L'exploitation de ces données a révélé l'existence d'un très fort taux d'abandon parmi les cohortes d'inscrits au sein de MOOC. Ce faisant, ce sont deux principales approches de l'évaluation de la réussite qui ont été adoptées : celle de la persistance et celle, transposée de la formation formelle, de la validation par l'obtention d'une certification. Néanmoins, celles - ci ne permettent pas de tenir compte de la diversité des intentions des inscrits. A l'aide de…

Démarche(s) d'évaluation déployée(s) dans le cadre de RITM-BFC

2022

Rice cooking and sensory quality

2019

International audience; This chapter provides a state-of-the-art review of the diversity and dynamics of consumer demand with respect to the eating quality of rice worldwide. Quality includes both tangible measurable factors (rice characteristics) and the context of consumption. The main sensory attributes evaluated around the world are described, and their relationship with the diversity of consumer demand is discussed. Instrumental methods for predicting quality measured on either raw or cooked grains are reviewed. The changes that occur in the rice grain during cooking are described along with a modeling approach able to predict the changes and their spatial distribution in the rice grai…

A Multivariate Analysis of HIV-1 Protease Inhibitors and Resistance Induced by Mutation

2005

This paper describes the use of the multivariate statistical procedure principal component analysis as a tool to explore the inhibitory activity of classes of protease inhibitors (PIs) against HIV-1 viruses (wild type and more-frequent single mutants, V82A, V82F, and I84V) and against protease enzymes. The analysis of correlations between biological activity and molecular descriptors or similarity indexes allowed a reliable classification of the 51 derivatives considered in this study. The best results were obtained in the case of the I84V mutant for which a high number of predictions was achieved. On this basis, this statistical approach is proposed as a reliable method for the prediction …

Comparative evaluation of Stevia and Xylitol chewing gum on salivary Streptococcus mutans count ? A pilot study

2020

Background Stevia is a natural sweetener which is used as sugar substitute. It has been suggested that stevia may be anticariogenic. However, there is limited research in this regard. Hence, the present study was designed to assess reduction in S. mutans in stevia and xylitol chewing gums. The aim of this study is to evaluate the effectiveness of stevia and xylitol chewing gums on salivary Streptococcus mutans count. Material and methods A randomized triple blinded clinical study with a crossover design included twenty healthy children aged 8-13 years with decayed, missing, and filled teeth (dmft)/DMFT index score ≥ 3. Before the test, unstimulated saliva was collected. Children divided int…

Molecular mechanisms of aroma persistence: From noncovalent interactions between aroma compounds and the oral mucosa to metabolization of aroma compo…

2021

International audience; The present study aims to reveal the molecular mechanisms underlying aroma persistence, as it plays a major role in food appreciation and quality. A multidisciplinary approach including ex vivo experiments using a novel model of oral mucosa and saliva as well as in vivo dynamic instrumental and sensory experiments was applied. Ex vivo results showed a reduction in aroma release between 7 and 86% in the presence of the thin layer of salivary proteins covering the oral mucosa (mucosal pellicle). This reduction was explained by hydrophobic interactions involving the mucosal pellicle and by the ability of oral cells and saliva to metabolize specific aroma compounds. The …

Microbial evaluation of Spanish potato omelette and cooked meat samples in University restaurants.

2000

The focus of this study was to evaluate the microbial quality of Spanish potato omelette and cooked meat samples including pork loin, chicken croquettes, long pork sausage, chicken breast, and meatballs from University restaurants. Microbiological analyses of Spanish potato omelette and cooked meat samples resulted in aerobic plate counts from1.00 to 2.90 and from1.00 to 6.04 log10 CFU g(-1), respectively. Total coliforms ranged from3 to 43 most probable number (MPN) g(-1) and from3 to2,400 MPN g(-1) for Spanish potato omelette and meat products, respectively. Escherichia coli, coagulase-positive staphylococci, and Lancefield group-D streptococci were detected in 1.7%, 3.5%, and 12.9% of Sp…

Urban consumers’ attitudes and willingness to pay for functional foods in Iran: A case of dietary sugar

2017

Growing concerns for the incidence of incurable diseases and high costs of health care have attracted consumers to functional foods in the world. These foods are characterized with health improvement, lower risk of disease incidence and less health hazards. The present work examined consumers’ attitude and willingness to pay for dietary sugar in Rasht city, Iran. The studied sample included 125 citizens of Rasht in spring and summer of 2016 whose size was determined by Mitchell and Carson approach. Results of contingent valuation method on the basis of one-and-one-half-bound choice model revealed that the descriptive variable of bid had negative, statistically significant impact on the acce…

Transformando las prácticas de evaluación en las agencias de innovación para fomentar transiciones hacia la sostenibilidad

2019

The aim of the study is to identify different styles and practices for evaluation of innovation policies based on different orientations, focusing on the case of the paradigm of transformative change to foster transitions towards sustainability, and the problems associated with its application. The study is exploratory, and it uses public funding agencies for innovation as strategic research settings. Based on the information provided by the experience of an international consortium participated by funding agencies from different countries, the main concepts and problems presented in the theoretical debate are illustrated. Finally, the main contributions of the study to the theory and pract…

Enquête auprès des personnes du 3è âge dans l'agglomération dijonnaise : conditions de vie et besoins : synthèse

1976

référence interne : 76013