Archeologia e Calcolatori 28.1 - 2017

Over the past few decades an intense discussion has taken place among scholars about the important role that instrumentum inscriptum plays in the reconstruction of various aspects of Roman social and economic history. One of the key issues is the definition of the criteria for publication and digital cataloguing of this class of materials, which includes various types of objects (amphorae, lamps, fine ware pottery, building materials, etc.) and inscriptions (stamps, tituli picti, graffiti ante or post cocturam). This paper presents a proposal for cataloguing fictile instrumentum inscriptum through a relational database which takes into account both the archaeological and epigraphical aspects of this kind of documents, while also paying particular attention to possible prosopographical comparisons with lapidary epigraphy. The collection of these data allows the user to pursue socio-economic research on the basis of different criteria, which can be variously combined: geographical, typological, prosopographical and chronological. Three case studies proved the effectiveness of this tool both for analytical and statistical studies.

In the last few decades, urban archaeology in Naples has contributed to outline the history of the city. The discovery of a great amount of pottery gave information about the daily life of ancient Naples. It was therefore decided to draw up a thematic archaeological map of the ceramics finds to reconstruct their production and distribution from the 4th century B.C. to the 7th century A.D. The project ceraNEApolis consists of a pottery map linked to a bibliographic database, which will be made available online: a working tool for experts, useful to outline the cultural city stratification and to understand the Neapolitan archaeological sites through the material. It is useful in defining the topography of production (workshop, raw materials, and resources), distribution (communication routes, harbour, market), uses and consumption patterns (house, habitat, sacred areas, burials) in the city, even if lacking monumental evidence. It contributes to the reconstruction and analysis of the cultural and urban landscape, taking into account the geomorphological elements and the data contexts even in diachronic and transversal multi-disciplinary perspective. The analysis of some significant cases shows its validity also for potential alternative fruition. The integration of virtual reality systems is a possible extension also for the knowledge, enhancement, communication and use of cultural heritage.

The study of a massive waste dump of the Arretine potter Ateius, by means of the database FileMaker Pro 11, provided some evidence concerning the deposit’s formation. For part of the fragments there were at least two depositions at different times, as some potsherds were re-used as building material within the kiln itself, then discarded again, with a layer of lime and sand that still covered them. Some fragments were first used as slats for shaping vases, then thrown into the dump, and eventually re-used as building material. All these operations inevitably caused the alteration of the stratigraphy, making it quite difficult to piece together all the fragments pertaining to a single vase. Moreover, in a period that cannot be identified, part of the dump was moved from the original place to the location where it was found in the excavation carried out in the 1950s . All these events are reflected by the archaeological records. The Conspectus 9 cup is a good example: the fragments of rims largely outnumber those of foots. Assessing the minimum number of vessels present in the dump is not easy under these circumstances.

Common ceramics constitute a very abundant material in the archaeological record. This study focuses on analyzing and statistically interpreting, from the perspective of archaeological material culture, the features of Roman coarse-ware ceramics from the Isturgi deposits (Andújar, Andalusia). The main goal of this research was to study ceramics from an archaeological perspective with reference to quantitative and qualitative aspects. The fragments of pottery belong to three essential types - kitchenware, tableware, and pottery for storage and transportation - and have different characteristics. The data set consists of 3,626 fragments of ceramics of Roman origin, divided in three clearly differentiated groups: 1) common calcareous ceramics, b) oxidized kitchen ceramics, and 3) reduced kitchen ceramics, having a very different quantity of fragments (1,635; 1,714; and 277, respectively) distributed in 16 excavation zones. The analysis of the information has been carried out on the basis of univariate methods, analysis of correlation and regression, analysis of the variance (ANOVA) and multivariate factorial analysis (Factorial Analysis with Varimax Rotation mainly). In this form it is possible to characterize ceramics on the basis of whether they were fired in an oxidizing or a reducing atmosphere.

The study of the Attic-figured pottery is closely connected to the “Beazley method”, which consists in the possibility of recognizing a painter’s hand exclusively on a stylistic basis. Although it has suffered some criticism, the Beazley method is still considered substantially valid. The need to collect images which can be analyzed from a stylistic point of view convinced us to combine 3D photogrammetry (Agisoft Photoscan) with 3D modelling (Luxology Modo) software in order to transfer the figured frieze from a vase to paper, thus avoiding the limitations of traditional direct drawing. These tools allowed us to contribute to the debate on the Beazley method; in fact, new research showed that Beazley over-divided Attic pottery, identifying many more painters than actually existed. This paper deals with the potential of 3D modeling applied to the Attic-figured pottery and focuses on the case of the Painter of Syracuse 19861, to whom Beazley attributed only two lekythoi (both belonging to the Lauricella collection from Gela and today displayed in the Archaeological Museum of Syracuse). The use of the 3D modelling process allowed us to obtain images proving that the two objects belong to the Ethiop Painter’s final production instead of to a different painter.

Locating archaeological cultures in time and space is a major challenge of archaeolog-ical research. Despite more than a century of scientific research in archaeology, a satisfactory solution has yet to be proposed. Past attempts to look into the problem focused on sharpening the definition of types of material culture artefacts, a more accurate chronological dating of such objects, various probabilistic methods or GIS solution for defining the time-space borders of archaeological cultures. However, the proposed approaches did not fully consider how the nature of archaeological cultures and their consequent dating and geographic positioning play a crucial role in assigning spatio-temporal borders. We propose to shift the operating logical paradigm in archaeology, from a crisp, Aristotelian-based logic, to fuzzy logic, in our opinion more suitable for reasoning in archaeology. We also introduce the rough sets theory to deal with chronological and geographic positioning of archaeological cultures. Both concepts have, in our opinion, substantial advantages over the traditional algebra and logic rules (implicitly) applied so far.

Conflicting archaeological evidence has generated conflicting theories about Israel’s origins. This work assembles all the theories into four categories and tests each category using computational tools borrowed from bio-mathematics. The bio-mathematical tools are models of diffusion, contagion and epidemics adjusted by various researches to study cultural transmission, ethnic borders and justice administration. The mathematical tools help reconcile known conflicting archaeological evidence and examine two aspects of the evidence that have not been considered so far: the alignment of the borders between material cultures and the conflict between sedentary and egalitarian lifestyles. Theories of immigration of pastoralist nomads passed the test.

The wealth of Mesolithic evidence in the Alpine environments makes it possible to attempt a reconstruction of highland settlement patterns based on the distribution of known sites. However, just how representative this site distribution is has not yet been fully tested and the impact of research biases on the spatial organisation of Mesolithic findspots is not clear. In order to tackle these issues the locational pattern of Mesolithic sites recorded in an upland area of the Venetian Dolomites (North-Eastern Italy) was analysed. Point pattern analysis was used to correlate site distribution with two sets of covariates mirroring research biases and prehistoric settlement preferences. Point-process models were created and compared using both standard Akaike and Bayesian Information Criteria. Results indicate that both factors equally influence the current site distribution. The low number of statistically significant variables - slope and land-use - suggests the existence of additional variables that were not considered. An additional model helped us explore the importance of alternative variables and provided new perspectives for future investigation of high-altitude Mesolithic landscapes, with particular attention to highland mobility.

This paper proposes a GIS quantitative method for simulating dispersed distribution of sites in a landscape. A certain number of sites might have escaped archaeological detection due to the adverse surface visibility conditions experienced during field survey (the so-called missing sites). As regards early Roman colonial landscapes of central-southern Italy, these surface visibility factors were traditionally seen to be so dramatic as to have allegedly hampered the detection of the conventionally expected dispersed and densely-settled colonial farm landscape. In this paper the regional and site-oriented field survey conducted in Venosa (Basilicata, Italy) is used as a case-study to simulate a large amount of hypothetical early colonial sites. The aim of this theoretical exercise is to show how the rural dispersed settlement pattern expected by the conventional theory could appear on a map, and to visually highlight the divergence between survey data and conventional spatial expectancies.

The Authors illustrate the documentation process of a menhir not recorded in earlier studies, which was fortuitously discovered in Sa Perda Fitta, in the western landscape of Sant’Anna Arresi, a small municipality of Sulcis (south-western Sardinia). This area was the subject of a detailed study by the Authors for their PhD dissertation at the Universidad de Granada, whose purpose was the detection and analysis of settlement patterns of human communities from the Neolithic to the Bronze Age. This territory, bounded on the East by the Sulcis massif and on the West by the Gulf of Palmas, is characterized by the presence of coastal ponds which have fostered the presence and the settlement of human groups since the Neolithic. The place name Sa Perda Fitta (in the Sardinian language ‘stone fixed into the ground’) has aroused a great deal of interest as it suggests the presence of at least one menhir, a widespread prehistoric monument on the island from the Neolithic to the Chalcolithic age. Morphology and typology of the monument was examined and a 3D model created by the photogrammetric processing of a digital photo dataset using Agisoft Photoscan 3D Pro, an automatic 3D reconstruction Structure from Motion (SfM) based software offering a significant and innovative contribution to the recording and dissemination of archaeological data.

The aim of this paper is to illustrate a study addressing the comprehension and architectural reconstruction of part of Hadrian’s Villa, the so called Accademia. The reconstruction of the monument has a double purpose: the understanding of the buildings and the creation of a virtual musealization. Archaeological data combined with digital reconstructions are aimed at making areas that are not accessible to visitors visible to users. In recent times, several reconstruction projects have been undertaken, producing relevant visual impacts. However, a careful study of the archaeological evidence often failed to support the reconstruction process. During the research project, a detailed survey of the archaeological evidence was conducted, using photogrammetry, photo scanning, and laser scanning techniques. The study produced important information accounting for both the building site and the construction choices made during the erection of the monument. The analysis generated new elements that allowed us to propose some new hypotheses regarding the identification and restitution of volumes, as well as the interpretation of some topographical, architectural and possibly ideological features. For this reason, the paper does not simply enquire into the reconstruction of an ancient building, but into the process of methodological experimentation required to understand, store, process and make data accessible, within the particular context of the Accademia. The methodological experimentation, based on a correct balance between new technologies and traditional research methods, helped us understand the monument, providing content to a reconstruction that otherwise would have been empty.

The research expedition of the CNR-ITABC in the archaeological site of Umm Al-Rasas, near Madaba (Jordan) was partially supported by the Italian Foreign Ministry. It started in 2013 and was mainly focused on the 3D documentation of two Byzantine churches with magnificent floor mosaics, dedicated to Saint Stephen and Bishop Sergius respectively. To improve the analysis of the archaeological structures, different investigation techniques were used and reciprocally integrated, in an effort to create geometric models enabling the interpretation of data related to the masonry and floor mosaics, as well as to the documentation of the archaeological area. In order to facilitate handling and mobility, lightweight tools were chosen and Micro Photogrammetry and Close Range Photogrammetry methods were applied. A correct description of the floor warp was achieved thanks to laser scanner techniques and the resulting geometric data were integrated with the chromatic data coming from photogrammetry, obtaining a 3D restitution of the two adjacent structures and a metric and spatial analysis of their morphological features. New devices, specifically designed for the project, helped to solve some practical problems that the survey operations had to cope with during the fieldwork. This paper illustrates the results of the survey, which will be useful to develop restoration projects in order to make the whole archaeological site attractive to tourists.

This paper describes a procedure of archaeological interpretation and representation based on DEM technology. Through different contexts of application the aim is to describe the potential of this procedure, useful for recreating all the stratigraphic complexity of an archaeological site. After an introduction and a short history of studies about the use of DEM in archaeological documentation, the Author illustrates two examples of archaeological excavation and two of archaeology of architecture. The first case study is the Castle of Castelpizigolo (Toano, RE): the DEM documentation was used for the production of automatic profile lines of every archaeological stratification. A similar result was obtained in the documentation of the second archaeological context, the site of Capo Don (Riva Ligure, IM). The subject of this investigation was a fireplace dating from Late Antiquity to the early medieval period. The second part was focused on the use of DEM in the archaeological analysis of buildings. A preliminary investigation was focused on an example of household architecture from the island of Rab (Croatia). The DEM was used for the interpretation of the origins of some architectural instabilities, caused by stratigraphic changes which occurred in the original building. The last case study was the rural church of S. Giusto in Marlia (LU), where DEM analysis gave a new interpretation about the archaeological evolution of this building. The procedure described in this paper is an innovative method for producing a faster and more accurate archaeological documentation and for giving a new archaeological tool for the stratigraphic interpretation of historical buildings.

The paper presents a reconstruction of the ancient morphology of the early medieval port of Comacchio through Kriging and Radial Basis Functions algorithms, and 3D models of the archaeological remains. The predicted surfaces are in significant accord with past hypotheses, also providing a good amount of certainty from a scientific point of view, since they appear extremely consistent with the geological data collected through stratigraphic corings. As a whole, the predicted surfaces and the 3D reconstructions of the wooden remains of the port offer fresh perspectives on the interpretation of the site by showing the existence of different building phases and spatial organizations, thus providing new guidelines for future excavations.

The article describes some bibliographic works carried out as part of the research line devoted to archaeological computing at the Istituto di Studi sul Mediterraneo Antico (ISMA), CNR. The work analyses, in particular, the rich bibliography on archaeological computing in the 1990s published on the website Virtual Museum of Archaeological Computing (http://archaeologicalcomputing.lincei.it/) and the digital bibliographies of Massimo Pallottino, Sabatino Moscati and Mauro Cristofani, some leading figures in our Institute’s history. Next, the text explores some examples of bibliographic resources available online (those relating to open texts and those relating to simple bibliographic references) and also describes some recently launched projects dedicated to virtual libraries and digital infrastructures in the field of human sciences.

In this paper the Author presents the results of a survey, which was created as a preliminary study that was part of the ARCA Project, a Ph.D. research project which started in November 2015. The purpose of the interview was to gather information about web sites related to archaeological projects and research, directly collecting feedback from users in order to analyze real world experiences and expectations. The questionnaire was prepared in collaboration with experts from other disciplines (psychologists, UX and UI experts, etc.), in order to promote an objective and scientifically valid approach, and obtain meaningful results. It is structured in 7 sections, for a total amount of 50 questions and practical experiences. One hundred and twenty people were invited to take part in this evaluation process; in a preliminary phase the interview was submitted to users coming exclusively from the Cultural Heritage Department of Padua University. Subsequently, it was opened to a wider audience from other universities and in other countries, to gather as much anonymous evidence as possible about functional feedback and user needs, also trying to map perception changes depending on origin, age, occupation and education. The collection and analysis of data allowed us to proceed further in the study and to develop software suitable for the presentation of different types of data from archaeological research. The final prototype will be evaluated through two case studies: the excavation of Nora and the Ca’Tron Project.

The development of new media for use as tools to collect, register and create data has opened innovative and original mediascapes where several forces are involved in an effort to provide a historical explanation of the past. Augmented reality is not a simple virtual object but is also a historical fact, which has modified the offline world. The huge amount of data poured into cyberspace have multiplied the actors involved in the construction of historical and archaeological interpretations and produced different discourses in competition with each other about the past. The ‘democratization’ of knowledge conveyed by the web has opened new semantic spaces and challenged the old rules about authority of knowledge. Today, archaeology must deal with the logic inherent in these new rhetoric spaces and with its particular way of making discourse about the past through the web.

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