1,027 research outputs found
Realtà e immaginazione nelle fotografie di Franco Grignani
No full textChe cos’è una fotografia? L’opera di Franco Grignani (1908-1999) sembra concepita per testare i limiti e individuare le crepe, le ambiguità e le sovrapposizioni della categoria del “fotografico”. Il ruolo della fotografia nella pratica dell’artista è fondamentale e generatore: in tutta la sua carriera Grignani ha condotto le ricerche sui meccanismi percettivi e sulla comunicazione nella vita “quotidiana” tenendo in grande considerazione il valore sociale dell’arte e pensando alla fotografia come lo strumento migliore per andare oltre i dati della realtà ipso facto percepibili. La lettura di una serie di opere e di scritti inediti ci rivela che l’autore “incubava” nella camera oscura immagini con lo scopo di sondare la realtà, di scavalcare gli stereotipi di un certo tipo di rappresentazioni le quali soffocano l’esperienza visiva dell’uomo moderno. Fotografie sperimentali che sollecitano l’intuito naturale e la percezione affinché l’uomo trasformi i dati reali in creatività. Si può quindi sostenere che la dimensione fotografica ebbe un’influenza talmente forte nel pensiero artistico di Franco Grignani che senza di essa gran parte della sua opera non esisterebbe.What is a photograph? The work of Franco Grignani (1908-1999) seems conceived to test the limits and detect the cracks, ambiguities and overlaps in the category of “photographic” art. The role of photography in the practice of the artist is fundamental and generative. Throughout his career Grignani led the research on the mechanisms of perception and communication in the life “everyday” considering the social value of art and photography as a tool in exploring the data ipso facto perceived reality. The reading of a series of works and unpublished writings reveals to us that the author “incubated” images in the darkroom in order to probe reality and override the stereotypes of a certain type of images that stifle the visual experience of modern man. Experimental photographs that stimulate natural intuition and perception so that man transforms real data into creativity. It is therefore arguable that the photographic dimension had such a strong influence in the artistic thought of Franco Grignani that without it most of his work would not exist
Realtà e immaginazione nelle fotografie di Franco Grignani
No full textWhat is a photograph? The work of Franco Grignani (1908-1999) seems conceived to test the limits and detect the cracks, ambiguities and overlaps in the category of “photographic” art. The role of photography in the practice of the artist is fundamental and generative. Throughout his career Grignani led the research on the mechanisms of perception and communication in the life “everyday” considering the social value of art and photography as a tool in exploring the data ipso facto perceived reality. The reading of a series of works and unpublished writings reveals to us that the author “incubated” images in the darkroom in order to probe reality and override the stereotypes of a certain type of images that stifle the visual experience of modern man. Experimental photographs that stimulate natural intuition and perception so that man transforms real data into creativity. It is therefore arguable that the photographic dimension had such a strong influence in the artistic thought of Franco Grignani that without it most of his work would not exist
Introduzione a Vocabolario Cateriniano di G. Gigli
No full textL'introduzione porta l'attenzione sulle ragioni di una selezione lessicale e sul valore storico del "Vocabolario cateriniano" del Gigli
Realtà e immaginazione nelle fotografie di Franco Grignani
No full textChe cos’è una fotografia? L’opera di Franco Grignani (1908-1999) sembra concepita per testare i limiti e individuare le crepe, le ambiguità e le sovrapposizioni della categoria del “fotografico”. Il ruolo della fotografia nella pratica dell’artista è fondamentale e generatore: in tutta la sua carriera Grignani ha condotto le ricerche sui meccanismi percettivi e sulla comunicazione nella vita “quotidiana” tenendo in grande considerazione il valore sociale dell’arte e pensando alla fotografia come lo strumento migliore per andare oltre i dati della realtà ipso facto percepibili. La lettura di una serie di opere e di scritti inediti ci rivela che l’autore “incubava” nella camera oscura immagini con lo scopo di sondare la realtà, di scavalcare gli stereotipi di un certo tipo di rappresentazioni le quali soffocano l’esperienza visiva dell’uomo moderno. Fotografie sperimentali che sollecitano l’intuito naturale e la percezione affinché l’uomo trasformi i dati reali in creatività. Si può quindi sostenere che la dimensione fotografica ebbe un’influenza talmente forte nel pensiero artistico di Franco Grignani che senza di essa gran parte della sua opera non esisterebbe.What is a photograph? The work of Franco Grignani (1908-1999) seems conceived to test the limits and detect the cracks, ambiguities and overlaps in the category of “photographic” art. The role of photography in the practice of the artist is fundamental and generative. Throughout his career Grignani led the research on the mechanisms of perception and communication in the life “everyday” considering the social value of art and photography as a tool in exploring the data ipso facto perceived reality. The reading of a series of works and unpublished writings reveals to us that the author “incubated” images in the darkroom in order to probe reality and override the stereotypes of a certain type of images that stifle the visual experience of modern man. Experimental photographs that stimulate natural intuition and perception so that man transforms real data into creativity. It is therefore arguable that the photographic dimension had such a strong influence in the artistic thought of Franco Grignani that without it most of his work would not exist.ope
Gianfranco Contini e Pietro Ciapessoni. Un alunno d'eccezione, un rettore lungimirante
No full textSull’epistolario inedito di G. Contini studente a Pavia con Pietro Ciapessoni, rettore del collegio universitario "Ghislieri"
Stochastic use of the LEACHN model to forecast nitrate leaching in different maize cropping system
No full textThis paper proposes a stochastic application of a deterministic model (LEACHN) with the aim of forecasting the probability of exceeding given nitrate leaching levels for different cropping systems and soil hydrological characteristics. The understanding of the level of probability associated to the prediction of leaching is an important criteria for the judgement of cropping systems. After calibration of organic matter mineralization and nitrification rates in both a sandy-loam and a loamy soil of the Western Po river valley (Northern Italy), LEACHN was used as a stochastic tool to evaluate the meteorological variability and the spatial variability of hydrological parameters of a soil. Meteorological variability was generated using series of measured air temperature, rainfall and global radiation for a period of at least 15 years, and these were then expanded to 100 years using the climate simulator CLIMGEN. Soil variability was simulated using the scale factor approach. The scale factor mean and standard deviation were obtained in eight locations within a 1000-m2 area. The stochastic scale factors were applied to parameters a and b in Campbell's water retention function and to hydraulic conductivity. The following combinations of crops were simulated in the two soils: (a) continuous maize for silage (MM); (b) continuous maize for grain (MG); (c) a combination of late harvested Italian ryegrass and short cycle silage maize (LRM); and (d) early harvested Italian ryegrass and late maturing silage maize (ERM). The crops were fertilized with 200 or 300 kg N ha-1 year-1 (or 450 kg for MM) and submitted to three water regimes: no irrigation, irrigation on the basis of water balance and conventional irrigation, which resulted in the highest volume. The simulated leaching was higher when fertilization and irrigation inputs were higher. It was further reduced by the introduction of cover-crop and was higher in the sandy soil. All these factors interacted, creating different levels of nitrate loss risk, that ranged from a minimum leaching of 4 kg N ha-1 year-1, with a 10% breakthrough probability of 16 kg N ha-1 year-1 (low fertilized and irrigated ERM in the sandy-loam soil) to a maximum average leaching of 146 kg N ha-1 year-1 with a 10% breakthrough probability of 235 kg N ha-1 year-1 (high fertilized, conventionally irrigated MM in the sandy soil). The breakthrough probability curves associated to nitrate leaching are skewed, showing that lower than average values are more frequent than higher ones. The standard deviations of yearly leaching were closely correlated to the means and were frequently greater than the means, particularly in the sandy soil. The stochastic simulation results offered the possibility of ranking cropping systems into classes of probability of exceeding a given value of leaching and the possibility of deriving suggestions for improved crop management. (C) 2000 Elsevier Science B.V
La transizione energetica e le comunità di energia rinnovabile
No full textThe thesis focuses on a new legal entity: Energy Communities, a fundamental tool for achieving the energy transition. After a brief introduction describing the context in which the energy issue arose, the first chapter is dedicated to the energy market liberalization process. Indeed, to understand the role that Energy Communities could play in the energy transition process, it is essential to comprehend how the Italian energy market operates and the main challenges it faces. The second chapter addresses the energy transition process. Following a short preamble on the importance of considering the social impact of the energy transition, the author summarizes the energy transition policies according to both European and Italian law. Additionally, different renewable energy sources are presented along with the technologies enabling their production. The chapter then analyzes two main issues concerning renewable energy plants: the delicate balance between protecting the landscape and developing energy infrastructures, and the authorization procedures required for the construction and operation of energy-producing plants. The third chapter is dedicated to Renewable Energy Communities (RECs), a new legal entity based on the open and voluntary participation of natural and legal persons, including local public entities, SMEs and research institutions, whose main purpose is to produce environmental, economic or social benefits. The analysis of RECs under European and Italian law is contextualized by also considering REC regulations in Germany, France, and Spain. Subsequently, the thesis explores the issue of the legal form that RECs could adopt, suggesting that REC regulations share many similarities with those of community cooperatives. In the final part, the social impact related to the creation and management of RECs is analyzed
Confinement - deconfinement transition in three-dimensional QED
No full textWe argue that, at finite temperature, parity-invariant electrodynamics with massive electrons in 2+1 dimensions can exist in both confined and deconfined phases and has a confinement-deconfinement phase transition of Berezinskii-Kosterlitz-Thouless type. We show that an order parameter for the confinement-deconfinement phase transition is a version of the Polyakov loop operator whose average measures the free energy of an external charge that is not an integral multiple of the electron charge
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