425 research outputs found

    Student Perceptions and Learning Outcomes: Evidence from the Education Testing Service (ETS) Major Field Test in Business

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    We examine course evaluation data from the core finance course and analyze how these data relate to performance on the finance portion of the Educational Testing Service Major Field Test in Business (ETS). We find that gender, SAT scores, GPA and concentration all have significant impacts on student performance. We also find that student perceptions of teaching and of how much knowledge they gained do not relate to the finance ETS score. Finally, we find that students who feel challenged in their finance core course do significantly better on the finance portion of the exam. This result is robust to different data partitions

    De la guerre à l’art de gouverner : un tournant théorique dans l’œuvre de Foucault ?

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    Les deux cours de Foucault publiés récemment (Sécurité, territoire, population et Naissance de la biopolitique) ont pour objet la notion de biopouvoir, formulée pour la première fois en 1976. L’analyse de ces deux cours ajoute de nouveaux éléments à la compréhension de cette période de la production foucaldienne, qui suit la publication de Surveiller et Punir (1975) et de La volonté de savoir (1976). Dans ces pages, j’aimerais suggérer quelques hypothèses concernant la genèse et l’élaboration..

    El Impuesto Inmobiliario en la Provincia de Córdoba. Evolución en más de una década. Algunas ideas para mejorarlo

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    El artículo del Profesor Roberto Nigro, un reconocido autoren temas de tributación, titulado “El Impuesto Inmobiliario en la provincia de Córdoba. Evolución en más de unadécada. Algunas ideas para mejorarlo”, analiza la estructura de dicho gravamen en la provincia de Córdoba,en relación con la que exhibía tiempo atrás, revisando aspectos como su justificación general y sudesempeño recaudatorio, cerrando con sus recomendaciones de tributarista, destacándose entre ellas que es“cuestión esencial la necesidad de que la Provincia revalúe nuevamente los inmuebles”, ya que un atrasocon escenarios cambiantes de precios relativos, produce distorsiones en el gravamen, afectando tanto sueficiencia como su equidad, no sólo en solares urbanos, sino también rurales

    Void Fraction Near Surfaces Immersed in Fluidized Beds by Heat Transfer Measurements

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    A semi-empirical model is used to calculate the averaged surface void fraction in fluidized beds, εw, starting from experimental data on surface-to-bed heat transfer coefficient. The model is able to describe the effect of the main process parameters and shows that εw increases with minimum fluidization void fraction and particle Archimedes number

    Lactic Fermentation of Cereal Flour: Feasibility Tests on Rice, Oat and Wheat

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    Background and objective: Consumers show increasing interests in probiotic foods and lactic acid fermentations. Cereal flour, can be a good fermentable substrate due to its prebiotic nature; from which, synbiotic products can be prepared. The aim of the current study was to investigate if three various cereal flours rice, oat and wheat would be good potentially functional foods.Material and methods: Fermentation tests were carried out on rice, oat and wheat flours, using Lactobacillus paracasei CBA L74 and 1.5-L fermenter with 1-L working volume. After 24 h, microbial growth, pH value, lactic acid production and starch consumption were assessed.Results and conclusion: In all three flours, pH reduction was seen; particularly in rice flour. The highest Lactobacillus growth and lactic acid production were achieved at the end of rice fermentation. The greatest starch consumption was reported at the end of rice fermentation. In conclusion, lactic fermentation of cereals as potentially functional foods was possible for the three flours. However, the best result belonged to rice flour.Conflict of interest: The authors declare no conflict of interest.

    Delayed surgery in neurologically intact patients affected by thoraco-lumbar junction burst fractures: to reduce pain and improve quality of life

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    This is a retrospective study on 18 patients affected by thoraco-lumbar junction burst fractures (TLJBF) A3 or A4 at computed tomography (CT) scan who referred to our hospital. To assess the surgical results in terms of pain and quality of life in a series of neurologically intact patients affected by TLJBF who underwent surgery after 3-4 months from the injury. In literature there is controversy if pain could be an indication for surgery in TLJBF and series of patients conservatively managed with success have been reported

    technical and economic analysis of pumps as turbines pats used in an italian water distribution network wdn for electrical energy production

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    Abstract The use of renewable resources is fundamental for achieving the emissions reduction targets. Small-scale hydropower is a viable solution that has only partially been exploited so far for producing electrical energy in rural/remote zones and for recovering energy where there is availability of pressure gradients and flow rates, like in Water Distribution Networks (WDNs) or in other industrial processes. In this paper, Pumps-as-Turbines (PaTs) are studied as a potential energy recovery and pressure regulation device, considering the case study of the Egna municipality WDN, a city located in the North of Italy. An innovative analytical approach is used for selecting PaTs, depending on WDN operating data, and for forecasting the machine performance under varying operating conditions. A MATLAB® Simulink model is developed for simulating two different set-ups configurations and installation of PaTs. Finally, an economic analysis is performed by evaluating the potential energy recovery and the PayBack Periods (PBPs)

    Effects of the Glucose Addition during Lactic Fermentation of Rice, Oat and Wheat Flours

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     Background and objective: Consumer interests in probiotic foods have increased in recent decades. Food industries respond to these growing interests by developing innovative products and guaranteeing high production efficiency. Cereals, due to their prebiotic nature, are good fermentable substrates; from which, potentially functional foods could be achieved. The aim of this study was to verify effects of D-glucose addition on fermentation of rice, oat and wheat flours.Material and methods: Suspensions of 15% of cereals flours (rice, oat and wheat) in distilled water added with increasing glucose concentrations (2, 5, 7 and 10% w v-1) were fermented by Lactobacillus paracasei CBA L74 for 24 h. Then, pH, microbial growth and lactic acid production were assessed.Results and conclusion: Rice fermentation was not affected by glucose addition. For oat and wheat, addition of D-glucose increased bacterial concentration, as well as lactic acid production. In particular, the best growth was achieved by the addition of 2 and 5% of glucose. Furthermore, lactic acid concentration increased with increased glucose concentration. In conclusion, D-glucose addition seems to be unnecessary for the improvement of rice fermentation. On the contrary, oat and wheat fermentations need further available carbon sources for a better Lactobacillus growth and a higher lactic acid production.Conflict of interest: The authors declare no conflict of interest

    Analysis of fragmented piezometric levels records: the ARTE (Antecedent Recharge Temporal Effectiveness) approach

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    In contrast to climatic data, piezometric records are often fragmented both in time and space continuity, despite their crucial importance in groundwater studies. This work presents a new method for analysis of groundwater level vs. recharge processes relation from fragmented piezometric data, called Antecedent Recharge Temporal Effectiveness (ARTE). The ARTE method was tested on 5 year-long (2016-2020) water table level datasets measured by three automatic piezometers located in the Lucca plain (Tuscany, Italy). For each piezometric level time series, measurements were extracted every 30, 60, and 120 days, and randomly, obtaining fragmented records inlcuding less than 3% of the complete time series. As for recharge processes of the monitored aquifer, rainfall and riverbed infiltration were selected. Hence, daily rainfall and daily mean river stage time series were acquired from different automatic raingauges and hydrometers respectively. The relationship between these recharge processes and the variation of the piezometric level from the artificially fragmented datasets were evaluated with the ARTE method. The ARTE method was potentially able to identify maximum correlation time intervals, for which the recharge processes are most likely to influence the groundwater level. Based on the analysis conducted on the fragmented piezometric datasets, the reconstruction of each piezometric time series was attempted for the study period. The simulated daily groundwater level records have RMSE values between 0.21 m and 0.73 m and NRMSE values between 0.08 and 0.16, which are satisfactory results when compared with other more complex simulation procedures, in which the training datasets are increasingly larger

    El Impuesto a la Transmisión Gratuita de Bienes y su reaparición en Argentina

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    El presente trabajo tiene por objeto repasar aspectos principales de este gravamen, habida cuenta su reciente instrumentación legal por la Provincia de Buenos Aires, después de más de 30 años de haberse derogado el mismo en todos los fiscos del Paí
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