3,333 research outputs found
La durata di vita degli abitati: attività e fasi costruttive tra analisi stratigrafica e cronologia
No full textL’analisi stratigrafica applicata all’indagine delle strutture abitative dell’età del Bronzo consente di individuare i momenti di realizzazione delle opere e i momenti di utilizzo con evidenze di attività domestiche o produttive, di trasformazione strutturale o di uso dello spazio. Nel contributo si vuole definire quali metodi e quali parametri possono essere applicati nel riconoscimento della durata di vita delle strutture di abitato, un obbiettivo mai analizzato in precedenza con metodologie dichiarate e illustrate in dettaglio. Sono presi in esame due casi studio databili alla media età del Bronzo, il primo relativo all’abitato di Mursia (isola di Pantelleria) in cui i contesti stratigrafici e le strutture sono ottimamente conservati, il secondo il villaggio di Via Ordiere a Solarolo (RA) che al contrario ha una complessa stratificazione in cui le strutture lignee e in terra hanno subito intensi processi di trasformazione post-deposizionali.
A Mursia a Pantelleria (TP), la sovrapposizione dei rifacimenti di pavimenti e le modificazioni delle strutture accessorie segnano con pre¬cisione una serie continua di ristrutturazioni. La presenza di alcune strutture produttive e il campionamento micromorfologico della stratificazione dei suoli di abitato permettono di identificare con più precisione i ritmi d’uso e di modificazione degli spazi domestici contribuendo a definire l’attribuzione cronologica relativa delle diverse fasi di vita confermate dalle datazioni al radiocarbonio o dall’analisi cronotipologica della ceramica.
A Solarolo (RA) la cultura materiale databile al BM2 associata alla stratificazione permette di valutare i modi e i tempi di formazione del deposito archeologico, circoscritto in non più di cento anni di vita, analizzato con un dettagliato campionamento per analisi micromorfologiche. Per la prima fase di vita del villaggio nel settore 1, l’analisi microstratigrafica delle quattro colonne di prelievo ha permesso di mettere in evidenza l’accumulo di rifiuti al di sotto di edifici costruiti su impalcato. Nella seconda fase, altri edifici situati nella porzione orientale del settore 1 vengono ricostruiti dopo aver livellato l’area e realizzato piattaforme di limo, su cui si impiantano strutture domestiche costruite direttamente a terra.
Sulla base di quanto presentato si attende una maggiore attenzione nella dichiarazione della cronologia delle fasi di vita di un contesto insediativo.The stratigraphic analysis applied to the Bronze Age domestic structures allows to identify the sequence of the activities and the use of space within a settlement. The evidence of domestic or productive markers, as well as the structural transformations of each context help delimiting their duration. This paper aims to define what methods and parameters can be applied in the identification of the life span of inhabited structures.
Two case studies dating to the Middle Bronze Age are analyzed, the first relating to the settlement of Mursia (island of Pantelleria) in which the stratigraphic contexts and residential structures are excellently preserved, the second the village of Via Ordiere in Solarolo (RA) which, on the contrary, has a complex stratification in which the wooden and earthen structures have been influenced by post-depositional processes.
At Mursia in Pantelleria (TP), the superimposition of the rebuilding of floors and the modifications of accessory structures precisely mark a continuous series of renovations. The presence of some production structures and the micromorphological sampling of the stratification of habitation soils allow for a more precise identi¬fication of the rhythms of use and modification of domestic spaces, helping to define the relative chronological attribution of the various phases of life confirmed by radiocarbon dating or chronotypological analysis of ceramics.
At Solarolo (RA), the material culture dating to BM2 (approx. one hundred years) associated with the stratification allows to assess the modes and times of formation of the archaeological deposit, analysed with detailed sampling by micromorphological analysis. For the first phase the microstratigraphic analysis of the four sampling columns revealed the accumulation of rubble underneath buildings built on pile dwellings. In the second phase, other buildings located in the eastern portion of sector 1 are reconstructed after levelling the area and creating earthen platforms, on which domestic structures built directly on the ground are implanted
A imagem de Alessandro Baricco no Brasil
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Estudos da Tradução, Florianópolis, 2013.Com a intenção de delinear o modo pelo qual o escritor italiano Alessandro Baricco se inseriu no sistema literário brasileiro e os caminhos percorridos pelos seus livros traduzidos, esta dissertação dá voz às experiências tradutórias de seus tradutores. A inserção de Bariccono Brasil tem seu início em 1997, através de uma proposição da Profa. Dra. Roberta Barni à editora Iluminuras da tradução de Oceano Mare. A partir daí, outras sete obras foram publicadas no Brasil, sendo três delas traduzidas por Roberta Barni e as outras quatro por quatro tradutores diferentes. De um lado, considera-se o tradutor como figura principal namediação entre culturas, e, de outro, se analisa a realidade desta figuradentro do sistema literário, sua invisibilidade, seus limites e o exercíciode sua profissão. A pesquisa conta, ainda, com críticas e resenhas referentes ao autor italiano publicadas em jornais consagrados no Brasil, considerando estas como parte constituinte da imagem de Baricco refletida em território nacional. Abstract : Intending to delineate the way the Italian writer Alessandro Baricco has been inserted in the Brazilian literary system and the paths his translated books have followed, this thesis gives voice to the translating experiences of his translators. Baricco's insertion in Brazil began in 1997, through a personal project of Dr. Roberta Barni, with her translation of Oceano Mare. Since then, seven other of his works have been published in Brazil, three of which were translated by Roberta Barni and the other four by four different translators. On the one hand,the translator is considered as the main figure in mediation betweencultures and, on the other, this figure's reality is analyzed within theliterary system: its invisibility, its limits and its professional practice. Criticisms and reviews of this Italian author published in well established Brazilian newspapers are also considered, with the understanding that they are part of Baricco's image reflected here
Work flexibility and firm growth: evidence from LEED data on the Emilia-Romagna region
No full textIn the last decades, work flexibility emerged as a key requirement firms must meet to face volatile markets and highly differentiated product demand. This article compares two alternative approaches to strengthen work flexibility: internal flexibility, that is, practices that focus on the employees’ ability to perform a variety of highly qualified tasks in a context of stable employment relationships; and external flexibility, that is, practices that align employment and labor costs to demand fluctuations using a buffer of nonstandard employees involved in routine tasks. We empirically verify whether both practices are able to boost sales growth using a linked employer-employee panel of manufacturing firms from the Emilia-Romagna region (Italy). While internal flexibility positively affects firm growth, external flexibility is at best not significant, and in some empirical specifications, it appears to hamper firm growth. Such a negative effect, however, decreases when we limit the analysis to industries with high demand volatility and cost-based competition. The related managerial and policy implications are discussed
Focolari e piastre di cottura nell’abitato dell’età del Bronzo di Mursia (Pantelleria TP)
No full textThe Bronze Age settlement of Mursia (XVIII – XV cent. BC) displays several examples of domestic structures related to the use of fire. They are mainly hearths and other features for food preparing, but also used for lighting and heating dwellings. They are mainly placed inside the huts, utilized repeatedly, presumably daily, by members of a small group, of family size.
The most recurrent structure is the hearth constructed with four stone slabs, placed vertically, the so called lithic cist. They are of small size (side length from 25 to 60 cm) and allow to prepare fire and live charcoal in a safe place. Filling layers of these structures are usually made of ash and charcoal, while at the bottom or around the structure there are evident marks of firing. Beyond the basic interpretation of these structures as fireplace, it remains uncertain the details about use for firing or cooking and especially the interaction with other aspects of daily life. In some huts there are more than one hearths with the shape of lithic cists and in some cases we are sure they are contemporary, so we need to interpret it as a necessity to prepare a higher amount of food, or a different use. Very often the filling layer shows that the structure was regularly cleaned and the burned products removed. Very unusual is the discovery of a small coal-shovel made of a bone scapula placed next to the lithic cist. Another main aspect to investigate is also the way to manage the smoke disposal. Some post holes around the hearth suggest the presence of some kind of draw, made of a chimney or a simple cowl.
At Mursia there are other types of structured fireplaces changing during the different phases of the settlement: stone slabs often combined with lithic hearths were used as cooking plates are peculiar in the earliest phase; round or oval cooking plates made of a thin layer of clay arranged above a bed of small stones or pottery fragments are typical of later phases. In small dwellings they are associated to andirons and kitchen ware.
The aim of this paper is to define how these structures were used, stressing the changes in managing fire, preparing food in accordance with the archaeological phases of the settlement. The analysis of the structures concerns technical characters, the distribution inside the settlement, the association with other domestic facilities, as well as to go into the items (pottery, tools) related to the use of fire and to cooking.
The first results of the micromorphological analysis carried on archaeological soil samples give additional information about the manufacture techniques and the sedimentary record of the hearts use and cleaning.L’abitato di Mursia dell’ antica e media età del Bronzo (XVIII - XV sec. a.C.), offre una ricca documentazione di strutture domestiche legate all’uso del fuoco. Si tratta di focolari strutturati e altre installazioni principalmente destinate alla preparazione del cibo, ma anche all’illuminazione e al riscaldamento degli ambienti domestici.
Collocate prevalentemente all’interno delle capanne, le strutture da fuoco si caratterizzano per un utilizzo ripetuto, probabilmente quotidiano. Il loro uso é presumibilmente connesso all’ambito familiare e al sostentamento di un gruppo ridotto di individui. L’elemento ricorrente è il focolare a "cista litica", costruito con quattro lastre di pietra disposte verticalmente a formare una piccola cassetta e destinato a controllare la combustione, evitando che potesse causare incendi.
Le altre strutture connesse all’uso del fuoco sono le piastre da cottura: in una prima fase sono costitute da lastre di pietra incassate o appoggiate in orizzontale sul pavimento. Nelle fasi più avanzate la piastra di cottura viene realizzata tramite una stesura di sedimenti impastati che ricopre uno strato di preparazione di piccoli ciottoli, lapilli e frr. di ceramica. Sono riconducibili alla cottura dei cibi confermate dalla frequente presenza di alari in terracotta e vasi adatti alla preparazione sul fuoco.
L’obiettivo di questo contributo é di definire la distribuzione e le modalità d’utilizzo delle diverse strutture, sottolineando eventuali cambiamenti di gestione del fuoco e di preparazione dei cibi nel corso delle differenti fasi d’occupazione del villaggio
La maturità di Alessandro Fei del Barbiere, in bilico tra Maniera e Riforma
No full textThis article studies the mature career of the Florentine painter Alessandro Fei del Barbiere (1537-1592), beginning with the rediscovery of the 'Ascension' altarpiece formerly in the Albizi Chapel in the destroyed church of San Pier Maggiore, Florence. Studying this painting and others recorded in 1584 by the biographer Raffaello Borghini, such as the two altarpieces for Santa Maria delle Grazie and the Madonna dell'Umiltà in Pistoia, the author reconstructs a body of works showing how in the 1580s Fei gradually went beyond the archaic style of his apprenticeship - he had been trained by Ridolfo del Ghirlandaio and Pierfrancesco Foschi, but was also marked by the Maniera of Vasari - evolving towards naturalism in both mimesis and pictorial handling. In Florence, his development partly parallels that of Santi di Tito and his circle, but Fei was also influenced by a probable sojourn during the early part of that decade in Rome, where he could have been inspired by Girolamo Muziano and the painters working for Pope Gregory XIII. Among other proposals, the author suggests that the artist was responsible for decorating the chancel of Fiesole Cathedral (c. 1584-1589), which consisted of an altarpiece, only rarely discussed by scholars, and a cycle of frescoes hitherto attributed to Nicodemo Ferrucci
Tra socialdemocrazie e Perestrojka. Le relazioni internazionali del Pci attraverso le carte di Alessandro Natta
No full textThis essay reconstructs the foreign policy of the Italian Communist Party during the four
years of Alessandro Natta’s secretariat (1984-1988) through largely original archival documentation,
from the Alessandro Natta Fonds of the Historical Archive of the Chamber of
Deputies. Natta’s papers are also cross-referenced with those kept in the PCI Archive at the
Gramsci Foundation. The author analyses the relationship that the PCI establishes with
Gorbachev’s Perestroika, Deng’s China, and European social democracies during the last
years of the Cold War
Comparison of GOES16 Data with the TRACER-ESCAPE Field Campaign Dataset for Convection Characterization: A Selection of Case Studies and Lessons Learnt
No full textConvective updrafts are one of the main characteristics of convective clouds, responsible for the convective mass flux and the redistribution of energy and condensate in the atmosphere. During the early stages of their lifecycle, convective clouds experience rapid cloud-top ascent manifested by a decrease in the geostationary IR brightness temperature (TBIR). Under the assumption that the convective cloud top behaves like a black body, the ascent rate of the convective cloud top can be estimated as (∂TBIR∂t), and it can be used to infer the near cloud-top convective updraft. The temporal resolution of the geostationary IR measurements and non-uniform beam-filling effects can influence the convective updraft estimation. However, the main shortcoming until today was the lack of independent verification of the strength of the convective updraft. Here, Doppler radar observations from the ESCAPE and TRACER field experiments provide independent estimates of the convective updraft velocity at higher spatiotemporal resolution throughout the convective core column and can be used to evaluate the updraft velocity estimates from the IR cooling rate for limited samples. Isolated convective cells were tracked with dedicated radar (RHIs and PPIs) scans throughout their lifecycle. Radial Doppler velocity measurements near the convective cloud top are used to provide estimates of convective updrafts. These data are compared with the geostationary IR and VIS channels (from the GOES satellite) to characterize the convection evolution and lifecycle based on cloud-top cooling rates
Volta Alessandro
No full textThe New Dictionary of Scientific Biography (extension and updating of the Dictionary of Scientific Biography) is one of the most substantial reference works in the field of the history of science. An up-to-date overview on Alessandro Volta's science with new perspectives offered by the author. Information and critical analysis is also provided on the main secondary literature produced on this main protagonist of enlightenment science after the 1976 entry "Volta Alessandro" in the Dictionary of Scientific Biography
A Novel Common-Gate Comparator with Auto-Zeroing Offset Cancellation
No full textThis paper presents a novel auto-zeroing common-gate comparator. This topology cancels the input-referred offset voltage by AC coupling the gates of the two input mosfets. The circuit operation is divided in two phases: in the first one, the circuit is in closed loop and samples the offset voltage as a voltage difference between two capacitors, while, in the second phase, the circuit is configured in open loop to compare the two input signals. Monte Carlo simulations run on a reference design in CMOS process shows that the offset standard deviation is reduced from 4.42mV down to 25.85 mu V. The designed comparator shows a 290 mu W power consumption from a 5V supply, while occupying a total area of 0.0156mm(2)
- …
