45 research outputs found
Imputing Dairy Producers' Quota Discount Rate Using the Individual Export Milk Program in Quebec
Trade liberalization scenarios are often evaluated using sophisticated programming models that rely on a number of assumptions related to demand and supply parameters. One challenge researchers often encounter in the calibration of dairy trade liberalization models is to identify the supply response of producers under production quotas. The existence of production quotas in the Canadian dairy industry implies departures from standard marginal cost pricing. Under traditional net present value models, an assumption about the discount factors attached to production quotas must be made to infer the supply response of Canadian dairy producers following a change in the economic environment (e.g., import tariffs). The Individual Export Milk (IEM) program in Quebec generated an opportunity to estimate dairy producersâ discount factors for production quotas conditional on different assumptions about structural parameters such as producersâ risk preferences and cost efficiency.International Relations/Trade, Productivity Analysis,
PrĂ©vention des difficultĂ©s dâapprentissage en lecture chez les enseignants de maternelle
Cet article dĂ©crit une dĂ©marche collaborative de dĂ©veloppement professionnel relatif Ă la prĂ©vention des difficultĂ©s dâapprentissage en lecture dans des maternelles de milieux socioĂ©conomiques faibles, ainsi que des retombĂ©es chez les enseignants et les Ă©lĂšves. Cette dĂ©marche consiste en lâimplantation dâun programme de prĂ©vention des difficultĂ©s en lecture, intĂ©grant le meilleur des approches globale et phonique. Lâanalyse des rĂ©sultats montre que la dĂ©marche de dĂ©veloppement professionnel a donnĂ© des retombĂ©es significatives chez les enseignants ; ceux-ci parlent de pratiques qui tĂ©moignent dâune plus grande importance accordĂ©e Ă la connaissance des lettres et aux habiletĂ©s mĂ©taphonologiques. De plus, cette dĂ©marche des enseignants a eu un effet positif sur la connaissance des lettres et la motivation des Ă©lĂšves du groupe expĂ©rimental.This article describes a collaborative approach to professional development related to the prevention of reading difficulties in low socio-economic Kindergartens, as well as the impact on both teachers and students. This approach includes the implementation of a program to prevent reading difficulties that integrates both global and phonetic teaching approaches. An analysis of the results shows that this process of professional development had a significant impact on teachers: their descriptions of teaching practices show the importance placed on letter knowledge and meta-phonological abilities. As well, this approach had a positive impact on letter knowledge and motivation for children in the experimental group.Este artĂculo describe un proceso cooperativo de desarrollo profesional relativo a la prevenciĂłn de las dificultades de aprendizaje en lectura en clases de preescolares de medio socioeconĂłmico bajo, asĂ como las repercusiones en los docentes y los alumnos. Este proceso consiste en la implantaciĂłn de un programa de prevenciĂłn de las dificultades en lectura, integrando lo mejor de los enfoques global y fĂłnico. El anĂĄlisis de los resultados demuestra que el proceso de desarrollo profesional tuvo repercusiones significativas en los docentes; los cuales hablan de prĂĄcticas que demuestran que se otorga una importancia mĂĄs grande al conocimiento de las letras y a las habilidades metafonolĂłgicas. AdemĂĄs, se ha observado que este proceso, por parte de los docentes, tuvo un efecto positivo en el conocimiento de las letras y la motivaciĂłn de los alumnos del grupo experimental
Saumur, Saint-Hilaire-Saint-Florent â Lotissement de Flines
SituĂ© sur un coteau au bord de la Loire, sur la commune de Saint Hilaire-Saint Florent, le site de « Flines » a Ă©tĂ© identifiĂ© puis fouillĂ© de janvier Ă mai 1991 Ă lâoccasion de la construction dâun lotissement. Une premiĂšre intervention a mis en Ă©vidence la prĂ©sence dâun site dâoccupation du haut Moyen Ăge. Aucun plan ne sâen dĂ©gage ; de plus, le site Ă©tant installĂ© sur une forte pente, les niveaux du sol ont complĂštement disparu. Cependant, une zone de chauffe cernĂ©e de fosses et de trous de..
PĂȘche hivernale : comparaison de lâefficaciteÌ de diffeÌrentes meÌthodes pour la capture du doreÌ et de la perchaude
Depuis le 1er avril 2017, il est interdit dâutiliser et de possĂ©der des poissons appĂąts vivants en saison hivernale. Par consĂ©quent, plusieurs adeptes de la pĂȘche sur la glace doivent adapter leur pratique. Afin de rĂ©pondre Ă leurs interrogations, une Ă©tude a Ă©tĂ© rĂ©alisĂ©e Ă lâhiver 2018. Le projet avait pour but de cibler les meilleures mĂ©thodes de pĂȘche autres que celle des poissons appĂąts vivants pour la capture du dorĂ© et de la perchaude en saison hivernale.
Pour ce faire, une sĂ©rie dâexpĂ©riences a Ă©tĂ© menĂ©e sur trois plans dâeau du sud-ouest de la province de QuĂ©bec, soit le lac Saint-Pierre, le lac Saint-Louis et le lac Champlain (baie Missisquoi). Pour deux techniques de pĂȘche, la brimbale et la dandinette, diffĂ©rents appĂąts naturels et leurres artificiels autorisĂ©s dans ces plans dâeau et disponibles dans le commerce au dĂ©tail ont Ă©tĂ© comparĂ©s dans le but dâĂ©valuer le succĂšs de pĂȘche. De façon complĂ©mentaire, la survie Ă la remise Ă lâeau a Ă©tĂ© Ă©valuĂ©e chez les dorĂ©s capturĂ©s au lac Saint-Pierre et comparĂ©e entre les mĂ©thodes de pĂȘche utilisĂ©es. Ă la brimbale, plus de la moitiĂ© des dorĂ©s ont Ă©tĂ© capturĂ©s Ă lâaide du poisson appĂąt mort congelĂ© sans traitement particulier. Ă la dandinette, pour la pĂȘche au dorĂ©, le poisson nageur Ă action verticale et la cuillĂšre, tous deux munis dâun appĂąt naturel, ont Ă©tĂ© les catĂ©gories de leurres les plus efficaces. Pour la pĂȘche Ă la perchaude, lâefficacitĂ© des leurres testĂ©s diffĂ©rait entre les deux plans dâeau visitĂ©s pour les deux techniques de pĂȘche. Au lac Champlain, les brimbales appĂątĂ©es avec des vers rouges ont Ă©tĂ© les plus efficaces, rĂ©coltant 40 % des captures, alors quâau lac Saint-Louis, les poissons appĂąts congelĂ©s sans traitement ont Ă©tĂ© les plus attractifs avec 32 % des captures. Ă la dandinette, la nymphe des glaces munie dâun asticot a Ă©tĂ© la plus efficace au lac Champlain tandis que la cuillĂšre munie dâun appĂąt naturel a Ă©tĂ© meilleure au lac Saint-Louis. Ces rĂ©sultats opposĂ©s sâexpliqueraient par le fait quâil y a une plus grande proportion de perchaudes de grande taille au lac Saint-Louis quâau lac Champlain, et que ces derniĂšres ont une alimentation davantage piscivore. Ă la dandinette, la majoritĂ© des catĂ©gories de leurres artificiels testĂ©s ont bĂ©nĂ©ficiĂ©, Ă des degrĂ©s diffĂ©rents, de lâajout dâun appĂąt naturel en termes de succĂšs de pĂȘche. Câest la cuillĂšre qui a profitĂ© le plus de cet ajout, et ce, pour la capture du dorĂ© et de la perchaude. La survie des dorĂ©s remis Ă lâeau a Ă©tĂ©, quant Ă elle, trĂšs Ă©levĂ©e (95,3 %) en pĂ©riode hivernale, et ce, peu importe la taille des poissons, la technique de capture et le type de leurre utilisĂ©. Les rĂ©sultats obtenus dans le cadre de cette Ă©tude confirment lâefficacitĂ© de plusieurs mĂ©thodes de pĂȘche en saison hivernale pour la capture du dorĂ© et de la perchaude
Recommended from our members
Using time perception to explore implicit sensitivity to emotional stimuli in autism spectrum disorder
Establishing whether implicit responses to emotional cues are intact in autism spectrum disorder (ASD) is fundamental to ascertaining why their emotional understanding is compromised. We used a temporal bisection task to assess for responsiveness to face and wildlife images that varied in emotional salience. There were no significant differences between an adult ASD and comparison group, with both showing implicit overestimation of emotional stimuli. Further, there was no correlation between overestimation of emotional stimuli and autistic traits in undergraduate students. These data do not suggest a fundamental insensitivity to the arousing content of emotional images in ASD, or in individuals with a high degree of autistic traits. The findings have implications for understanding how emotional stimuli are processed in ASD
Multiple mechanisms disrupt the let-7 microRNA family in neuroblastoma
Poor prognosis in neuroblastoma is associated with genetic amplification of MYCN. MYCN is itself a target of let-7, a tumour suppressor family of microRNAs implicated in numerous cancers. LIN28B, an inhibitor of let-7 biogenesis, is overexpressed in neuroblastoma and has been reported to regulate MYCN. Here we show, however, that LIN28B is dispensable in MYCN-amplified neuroblastoma cell lines, despite de-repression of let-7. We further demonstrate that MYCN messenger RNA levels in amplified disease are exceptionally high and sufficient to sponge let-7, which reconciles the dispensability of LIN28B. We found that genetic loss of let-7 is common in neuroblastoma, inversely associated with MYCN amplification, and independently associated with poor outcomes, providing a rationale for chromosomal loss patterns in neuroblastoma. We propose that let-7 disruption by LIN28B, MYCN sponging, or genetic loss is a unifying mechanism of neuroblastoma development with broad implications for cancer pathogenesis.United States. National Institutes of Health (R01GM107536)Alex's Lemonade Stand FoundationHoward Hughes Medical InstituteBoston Children's Hospital. Manton Center for Orphan Disease ResearchNational Institute of General Medical Sciences (U.S.) (T32GM007753
Effects of Cu on plasma cortisol and cortisol secretion by adrenocortical cells of rainbow trout (Oncorhynchus mykiss)
Primary and Secondary Progressive Aphasia in Posterior Cortical Atrophy
Background: Posterior cortical atrophy (PCA) is a clinico-radiological syndrome characterized by a progressive decline in visuospatial/visuoperceptual processing. PCA is accompanied by the impairment of other cognitive functions, including language abilities. Methods: The present study focused on three patients presenting with language complaints and a clinical profile that was compatible with PCA. In addition to neurological and neuroimaging examinations, they were assessed with comprehensive batteries of neuropsychological and neurolinguistic tests. Results: The general medical profile of the three patients is consistent with PCA, although they presented with confounding factors, making diagnosis less clear. The cognitive profile of the three patients was marked by Balint and Gerstmann’s syndromes as well as impairments affecting executive functions, short-term and working memory, visuospatial and visuoperceptual abilities, and sensorimotor execution abilities. Their language ability was characterized by word-finding difficulties and impairments of sentence comprehension, sentence repetition, verbal fluency, narrative speech, reading, and writing. Conclusions: This study confirmed that PCA is marked by visuospatial and visuoperceptual deficits and reported evidence of primary and secondary language impairments in the three patients. The similarities of some of their language impairments with those found in the logopenic variant of primary progressive aphasia is discussed from neurolinguistic and neuroanatomical points of view
Saint-Hilaire, Saint-Florent (Maine-et-Loire). Flines.
Brodeur Jean, Thooris Catherine. Saint-Hilaire, Saint-Florent (Maine-et-Loire). Flines.. In: Archéologie médiévale, tome 22, 1992. pp. 424-425