1,720,965 research outputs found
La tipizzazione di un edificio a carattere istituzionale: caratteristiche salienti della chiesa e della banca nei bambini tra i quattro e gli undici anni., Giornale Italiano di Psicologia, 2, 303-24.
No full textThermal–hydraulic separators unveiled
Full text linkA key issue in the design of heating/cooling networks consists in attaining the hydraulic independence of the connected circuits while simultaneously providing the required flow rate of thermal fluid at the design temperature under different operation loads. In this respect, thermal- hydraulic separators offer a valid alternative over other devices used for the same service (as, e.g., heat exchangers, accumulation tanks or double-tee junctions), providing the opportunity to integrate the functions of de-gassing and of removal of solid debris in a single piece of equipment.The present numerical investigation improves the characterization and modelling of these devices. The major outcome of the proposed research is the improvement of the base model widely-used in the design of thermal-hydraulic networks encompassing thermal-hydraulic sep-arators. The proposed model accounts for the turbulent mixing within the device. Furthermore, we propose an original network representation of thermal-hydraulic separators, which supports the physical intuition about their internal flow patterns and can be integrated in thermal network solvers used for plant design and optimization. To the authors' best knowledge, this is the first numerical investigation accounting for the impact of the internal mesh strainer on the behaviour of the device
Empathy in history. Understanding a past institution (ordeal) in children and young adults when description and rationale are provided.
No full textA total of 150 students, from 8-9 to 25 years, were interviewed about ordeal1 in the Middle Ages, after reading a shorter and simplified version of a text used in previous research on this topic (e.g., Lee & Ashby, 2001). Unlike previous studies, at all ages nearly all students understood that ordeal involved the intervention of God, and was related to religious beliefs different from the present. With age, there was an increase in the number of students also referring to the backwardness of the Middle Ages, or stating that at least some Medieval peoples did not expect ordeal to be decisive about the guilt or innocence of an accused, using it instead to find a culprit in any case, or as a punishment or deterrent
Il giudizio espresso dai bambini sulla figura dell'insegnante posta a confronto con le immagini del compagno e dei genitori indagine condotta attraverso il differenziale semantico.
No full textConceptions about the origin of species in Italian children who have, and have not, been taught about the topic
No full textInvestigations of people’s understanding of the evolution of species have focused mainly on secondary school and university students. Very few investigations have taken into consideration younger students, and none have related children’s ideas about the origin of species to formal instruction on this topic. To help fill this gap, the
present study examines the effect of this instruction in elementary school children by comparing Italian second graders (n = 21; age = 7 years, 1 month, to 8 years, 7 months) with third graders (n = 18; age = 8 years, 1 month, to 9 years, 4 months) who had been taught about “the earth before humans” for several months in keeping
with the Italian National Syllabus for this grade level. Semistructured interviews were used to examine children’s thoughts about speciation. The majority of second graders used a creationist framework, whereas most third graders used a mixed framework (referring to both creation and evolution) or an evolutionary framework.
However, children did not know about the mechanism of evolution and considered it to be the result of the passage of time, the use and disuse of body parts, or the need to adapt to a changing environment, as suggested by their teacher and textbooks
Design and Assessment of an Innovative Thawing Equipment for the Professional Food Service
No full textThe need for faster, safer, and environmentally compatible thawing methods is perceived in different branches of food industry, as, e.g., in the fast-food sector. We investigate a prototype of jet-impingement, batch-process thawing machine, exploiting high-speed impact of heated atmospheric air onto food items. The results of combined experimental and numerical study show the promising potential of this technology beyond the expected increased thawing rate, especially when the proposed two-side arrangement of the jets is adopted. A series of thawing indicators are calculated and used to account for the thawing uniformity and the risk of bacterial proliferation. A computationally efficient two-stage model of the considered thawing process is conceived, which can be used for design and optimization
Come il bambino vive l'insegnante: la percezione dell'insegnante da parte del bambino attraverso il metodo delle immagini e la tecnica del confronto a coppie
No full textSelection of a Suitable Waste to Energy Technology for Greater Beirut Area Using the Analytic Hierarchy Process
Full text linkWaste to Energy (WtE) is becoming an interesting option for many countries as an effective waste management solution. The goal of this study is the selection of a suitable WtE technology for the treatment of municipal solid waste in Greater Beirut Area (GBA). In adopting a potential WtE technology for solid waste treatment in GBA, the protection of the environment and citizens health is mandatory, but it is also evident the pressing need for economically feasible new electrical energy sources. For a well and an efficient functioning of a WtE plant, an appropriate supply chain system of municipal solid waste should be guaranteed. The selection of a suitable WtE technology is a complex decision and to achieve the stated objective the Analytic Hierarchy Process (AHP) method was employed and experts in the waste management sector were consulted to formulate the model. AHP analysis was performed using SpiceLogic software. Results indicate that Composting is the best choice with a global score of 0.33, followed by Anaerobic Digestion which acquired 0.21 and Incineration ranked as the third preferred technology obtaining 0.14. A sensitivity analysis was conducted to ensure the results consistency, assessing the reliability of the experts’ judgments
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