86,590 research outputs found
Valorizzare il Paleolitico. Reti territoriali e buone pratiche
No full textThe Palaeolithic site of Grotta di Fumane, discovered fi fty years ago in the territory of Valpolicella, is an extraordinary testimony to the way
of life of Neanderthal Man and the fi rst Anatomically Modern Men thanks to the rich archaeological evidence found in its fi ll. The data collected are crucial for studying the birth of symbolic thought in Homo sapiens and for comparing it with that of Neanderthals. For several years now, the cave has been the object of intense promotion leading to several projects being shared with a wide local network of organizations. The National Archaeological Museum of Verona will soon host two large rooms dedicated to this important Palaeolithic site, equipped with multimedia stations, explanatory panels, casts and thematic showcases
Il nuovo allestimento della Sala I del Museo Nazionale Atestino di Este
No full textThe Atestino National Museum was inaugurated on July 6, 1902 in the current location of Palazzo Mocenigo, after the Euganean Roman Museum (formerly the Civic Lapidary Museum, until 1880) became National in 1887. Over more than a century, starting with its first director Alessandro Prosdocimi, the use of space and, above all, the location of archaeological finds has undergone many changes. With funding obtained through the project The first cinema in history. Focusing on the Paleolithic the layout of Room I of the Atestino National Museum has been re-thought. On show in this room are local seconds from Prehistory up to the Late Bronze Age. The collection layout has now been enriched by new data that have emerged in recent years. The authors of this contribution present the artifacts chosen for the exhibit and their contexts of origin and define the choices that led to the technical design and set-up of the showcases
Detecting low-dimensional chaos in time series of finite length generated from discrete parameter processes
No full textOne of the truly novel issues in the physics of the last decade is that some time series considered of stochastic origin might in fact be of a particular deterministic type, named "chaotic". Chaotic processes are essentially characterized by a low, rather than very high (as in stochastic processes), number of degrees of freedom. There has been a proliferation of attempts to provide efficient analytical tools to discriminate between chaos and stochasticity, but in most cases their practical utility is limited by the lack of knowledge of their effectiveness in realistic time series, i.e. of finite length and contaminated by noise. The present paper attempts to estimate the practical efficiency of a slightly modified Sugihara and May procedure [G. Sugihara and R.M. May, Nature 344 (1990) 734]. This is applied to synthetic finite time series generated from discrete parameter processes, providing rates of misidentification (obtained through simulations) for the most common stochastic processes (Gaussian, exponential, autoregressive, and periodic) and chaotic maps (logistic, Hénon, biological, Tent, trigonometric, and Ikeda). The procedure consists of comparing with a selected threshold the correlation between actual and predicted values one time step into the future as a function of the embedding dimension E. This procedure allows to infer the presence of low-dimensional chaos even on series of ∼ 50 units, and in presence of a noise level equal to ∼ 10% of the signal amplitude. We apply this method to the sequence of volcanic eruptions of Piton de La Fournaise volcano finding no evidence of low-dimensional chaos. © 1996 Elsevier Science B.V. All rights reserved
Oppeano 4C: analisi archeozoologica dell'insieme faunistico proveniente da un abitato palafitticolo dell'antica Età del Bronzo nella pianura veronese [Oppeano 4C: archaeozoological analysis of an Early Bronze Age pile-dwelling site in the Veronese Po Plain]
No full textIl presente contributo fornisce i risultati dell’analisi archeozoologica condotta sul materiale faunistico proveniente dal sito di Oppeano 4C, insediamento di tipo palafitticolo venuto alla luce durante gli scavi d’archeologia preventiva condotti tra 2014 e 2015 a Vallese di Oppeano, nella valle del Bussè, dalla ex Soprintendenza per i Beni Archeologici del Veneto (oggi SABAP Verona, Rovigo, Vicenza). L’occupazione del sito è riferibile al Bronzo antico ed è testimoniata dalla conservazione in ambiente umido di strutture d’abitato in legno, associate a cumuli di scarico contenenti materiale antropico e resti di pasto. La fauna di Oppeano 4C risulta composta principalmente da animali domestici ed in piccola parte da fauna selvatica. Il taxon maggiormente rappresentato è quello dei suini sia per numero dei resti che sulla base del NMI, mentre seguono caprovini e bovini in egual misura. Si segnala inoltre la presenza del cane. Tra gli animali selvatici sono stati identificati il cervo, il capriolo ed il cinghiale, qualche resto di castoro, d’avifauna e qualche frammento di piastrone di testuggine palustre. Tra i carnivori risultano presenti invece pochi resti di volpe, tasso e lontra. Infine, è attestata la produzione di manufatti in materia dura animale, tra cui alcuni punteruoli in osso ricavati soprattutto da ulne di ungulati di diversa taglia.This study presents the results of the archaeozoological analysis carried out on faunal material from the site of Oppeano 4C, a pile-dwelling settlement discovered during a rescue excavation conducted by the former Soprintendenza per i Beni Archeologici del Veneto, between 2014 and 2015 at Vallese di Oppeano, in the Bussè valley. The site was occupied during the Early Bronze Age. This chronology was confirmed by wooden structures preserved by the waterlogged environment and associated with middens containing anthropic material and animal remains. The faunal assemblage
is mainly composed of domestic taxa rather than wild animals. Pigs are the most represented taxon, while goats and cattle follow in equal measure. The presence of dogs is also documented. Wild animals identified include red deer, roe deer, and wild boar, a few remains of beaver, avifauna, fish and pond turtle. Among carnivores, a few remains of fox, badger and otter are present. Furthermore, artefacts made from animal bone were recovered, including some pointed tools made mainly from the ulnae of ungulates of different sizes
Rikitake's geodynamo model analysed in terms of classical time series statistics
No full textRikitake's geodynamo model is used to generate synthetic series of geomagnetic reversals which are statistically compared with the real series of reversals. The model is found inadequate to represent reality. © 1995
Detecting low-dimensional chaos in geophysical time series
No full textDriven by the great appeal of the potential capability to reduce very complex and highly erratic phenomenologies to simple deterministic and predictable processes, much effort has been devoted to studying chaotic systems. Unfortunately, such studies have been essentially theoretical, and the problem of detecting chaos in real time series has so far received little attention. As a consequence, the available techniques are fairly inefficient and are often misused. Furthermore, if detecting chaos in real-time data would, in any case, be important from a philosophical stand point, only low-dimensional chaos is of practical interest, since it allows an effective short range predictability and could possibly also be modeled. A critical review of the available methods to detect chaos in a real series is presented together with a procedure which is efficient in the presence of experimental errors and with relatively small sets of data. An application to the series of geomagnetic inversions and to the eruptive activity of the Piton de la Fournaise volcano, for which a chaotic dynamics appeared best documented, does not lead to detection of any low-dimensional chaos. Copyright 1997 by the American Geophysical Union
Practical application of fractal analysis: Problems and solutions
No full textFractal analysis is now common in many disciplines, but its actual application is often affected by methodological errors which can bias the results. These problems are commonly associated with the evaluation of the fractal dimension D and the range of scale invariance R. We show that by applying the most common algorithms for fractal analysis (Walker's Ruler and box counting), it is always possible to obtain a fractal dimension, but this value might be physically meaningless. The chief problem is the number of data points, which is bound to be insufficient when the algorithms are implemented by hand. Further, erroneous application of regression analysis can also lead to incorrect results. To remedy the former point, we have implemented a convenient numerical program for box counting. After discussing the rationale of linear regression and its application to fractal analysis, we present a methodology that can be followed to obtain meaningful results
Metalli, creta, una piuma d'uccello...Studi di archeologia per Angela Ruta Serafini
No full textIl volume raccoglie 36 contributi in una edizione miscellanea, dedicata ad Angela Ruta Serafini, studiosa di protostoria italica e antichità celtiche, a funzionario della Soprintendenza archeologica del Veneto e ex-Direttore del Museo nazionale Atestino. La molteplicità degli interessi della persona giustifica un indice di grande ampiezza cronologica e contenutistica con contributi dalla preistoria all'età classica e con tematiche che toccano gli ambiti della museologia, della storia degli scavi, delle attività di volontariato nell'ambito della cultura
Heat Treatment of Mineral Pigment During the Upper Palaeolithic in North-East Italy
No full textThe use of red ochre for utilitarian, symbolic and artistic purposes is widely documented in prehistoric contexts. The absence of adequate red-coloured raw materials influenced the development of technological activities aimed at modifying the original physiochemical properties of yellow ochre. The heat treatment of goethite to obtain hematite was investigated in the western sector of the Lessini Mountains in north-east Italy, where red ochre was found in the (Proto)Aurignacian levels at Fumane cave and in the Late Epigravettian sequence at Tagliente rockshelter. The combination of X-ray powder diffraction (XRPD) and transmission electron microscopy (TEM) proved that heat treatment was a common practice in the studied archaeological sites due to the scarce availability of suitable hematite-based material in the region. © University of Oxford
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