Search results for " Teoria"
showing 10 items of 1547 documents
Fiducia e argomentazione. Una prospettiva aristotelica
2012
Heat-transfer performance comparison between overlapped and woven spacers for membrane distillation
2016
Sustainable production of fresh water from seawater desalination is a problem of crucial importance nowadays. Recently, some desalination technologies are taking advantage from the coupling with renewable resources. Among emerging technologies, Membrane Distillation (MD) is considered as one of the most promising as it can be easily powered by solar thermal energy or waste-heat. As an emerging technology, efforts are required to optimize MD unit geometry and operating conditions in order to reduce fresh water production specific cost. Temperature polarization phenomenon is a well-known detrimental effect for the MD process. Spacers are traditionally used to enhance mixing and shrink tempera…
Review of Ángel-Luis Pujante and Keith Gregor, eds. Romeo y Julieta en España: Las versiones neoclásicas. Murcia; Madrid: Universidad de Murcia; Univ…
2019
Review of Ángel-Luis Pujante and Keith Gregor, eds. Romeo y Julieta en España: Las versiones neoclásicas. Murcia; Madrid: Universidad de Murcia; Universidad Complutense de Madrid, 2017
Optimization of net power density in Reverse Electrodialysis
2019
Abstract Reverse Electrodialysis (RED) extracts electrical energy from the salinity difference between two solutions using selective ion exchange membranes. In RED, conditions yielding a large net power density (NPD) are generally desired, due to the still large cost of the membranes. NPD depends on a large number of physical and geometric parameters. Some of these, for example the inlet concentrations of concentrate and diluate, can be regarded as “scenario” variables, imposed by external constraints (e.g., availability) or chosen by different criteria than NPD maximization. Others, namely the thicknesses HCONC, HDIL and the velocities UCONC, UDIL in the concentrate and diluate channels, c…
Energy harvesting by waste acid/base neutralization via bipolar membrane reverse electrodialysis
2020
Bipolar Membrane Reverse Electrodialysis (BMRED) can be used to produce electricity exploiting acid-base neutralization, thus representing a valuable route in reusing waste streams. The present work investigates the performance of a lab-scale BMRED module under several operating conditions. By feeding the stack with 1 M HCl and NaOH streams, a maximum power density of ~17 W m−2 was obtained at 100 A m−2 with a 10-triplet stack with a flow velocity of 1 cm s−1, while an energy density of ~10 kWh m−3 acid could be extracted by a complete neutralization. Parasitic currents along feed and drain manifolds significantly affected the performance of the stack when equipped with a higher number of t…
Using Activity Theory in Developing Instructional Tools for Project Management Studies
2014
Competence and skills of the project manager are significant to project success. The skills needed in project managers’ work cannot be learned only by reading the books or a lecture hall; one learns them by practice. Therefore, an important challenge for educational institutions is to develop pedagogical practices that allow students to participate in working life projects and to confront real-life problems. Project-based learning (PBL) offers a model that enables students to practice the skills and competences needed in working life projects by utilizing real-world work assignments in time-limited projects. Using PBL method alone does not necessarily guarantee learning result. In order to …
They think the world of you. Analisi di un romanzo di J.R. Ackerley
2017
Analisi del famoso romanzo di J.R. Ackerley
Ripensare gli oggetti, riprogettare la società
2021
The essay introduces a series of classical essays by Bruno Latour on design and techniques, showing the relationships between Actor Network Theory and semiotics. In particular, the theoretical convergences and problematic nodes on the methodological level concerning the application of certain semiotic notions, such as that of actant and that of enunciation, within Bruno Latour's anthropology are discussed.
Ibridi in città: corpi, spazi, tecnologie
2009
Metodologia della ricerca sociale e politiche pubbliche
2020
In questo capitolo si passano in rasegna i principali concetti che devono essere padroneggiati dal buon valutatore delle politiche pubbliche e gli strumenti che devono far parte della sua cassetta degli attrezzi. Trattando la causazione e l'esperimento vedremo come nel campo delle scienze sociali sia necessario avvalersi di alcuni accorgimenti per disegnare una buona ricerca valutativa. In this chapter we review the main concepts that must be mastered by the good public policy evaluator and the tools that must be part of his toolbox. In dealing with causation and experiment we will see how in the field of social sciences it is necessary to use some precautions to design good evaluative rese…