Semantically Enhanced 3D: A Web-based Platform for Spatial Integration of Excavation Documentation at Alken Enge,Denmark

ABSTRACT

The photorealistic and geometrically accurate 3-dimensional representation of excavations, provided by image-based modeling, has the potential to transform the process of excavation documentation, making it easier to share observations with other researchers. Paradoxically, however, spatial representation lacks the ability to convey archaeological interpretations. By example of excavations in Alken Enge, Denmark, this paper explores how a web-based 3D platform is able to facilitate the collaborative exchange of 3D excavation content and how the integration of spatial and attribute data into one common event-based data model may be advantageous. This includes enhancing the semantic value of field-recorded 3D models by segmenting the geometry using various techniques, such as 3D projections and machine learning. Accordingly, the paper demonstrates a framework for interactive 3D models, which includes attributed classification based on segmented 3D content correlated with traditional raster, vector, and textual data, delivering a spatially integrated platform for collaborative research.     

Capacity Building toward Resilience: How Communities Recover,Learn, and Change in the Aftermath of Extreme Events

When faced with natural disasters, communities respond in diverse ways, with processes that reflect the extent of damage experienced by the community, their resource availability, and stakeholder needs. Local‐level processes drive decisions about mitigating future flood risks, such as if, how, and where to rebuild, as well as changes in zoning practices and public outreach programs. Because of their potentially recurring nature, floods offer an opportunity for communities to learn from and adapt to these experiences with the goal of increasing resiliency through deliberation, modification of former policies, and adoption of new policies. By following the response to the September 2013 floods in seven Colorado communities, this study investigates if, how, and why communities successfully learn from extreme events and change their local government policies to increase resilience and decrease vulnerability to future floods. We find that greater openness of post‐flood decision process is associated with more in‐depth deliberation, learning, and more substantive and frequent policy change.     

From Boatyard to Museum: 3D laser scanning and digital modelling of the Qatar Museums watercraft collection,Doha, Qatar

This article presents the results of a project to 3D laser scan and digitally model 14 watercraft from the Qatar Museums collection, comprising a range of regional vessels: most had not been surveyed previously. The project used the resulting point clouds generated 2D naval lines and orthographic records of the vessels in their current condition, and photorealistic 3D digital models for gallery display. This case study provides illustrative examples of the intermediate stages and final outputs. It assesses the pros and cons of 3D laser scanning as a survey technology for nautical scholars in terms of the time, cost, and skillset, as well as logistical considerations. It also compares the accuracy of traditional hand survey methods.     

Saudi Arabia's Wahhabism and Nationalism: The Evolution of Wataniyya into Qawmiyya

For many scholars, the Arab Spring was actually an Islamic Winter, especially when ISIS rose up in Iraq and Syria, and the Muslim Brotherhood won democratic elections in Egypt and took control over the state. But in other unshaken regions in the Middle East, like Saudi Arabia and the GCC states, the Arab Spring or the Islamic Winter led to something different, which I will call “rethinking nationalism.” This article asserts that since Saudi Arabia's independence in 1932, the royal family has succeeded in forming Wahhabi nationalism, meaning that despite the fact that all Saudi civilians enjoy Saudi citizenship, only those who ascribe to the Wahhabism creed can be part of the nation in terms of political participation and policy decision‐making. Although some steps in affirmative action have been taken in recent years — also as a Saudi response to the Arab Spring — toward women and the Shi'a minority, these groups or sectors still are not perceived by the royal family as part of the nation, and probably not as equal citizens, for religious reasons that over the years have distinguished between real Saudi nationalist groups and Saudi civilians.     

Double‐Thinking and Contradictory Arrangements in Iranian Law and Society

Although thinking double thoughts and living dual lives are not specifically Iranian traits, Iranians have, nevertheless, become more susceptible to them for historical reasons, which may be traced back to when Persians became Muslims. The gradual normalization of double‐thinking over the centuries has given rise to social and political patterns of behavior and institutional arrangements which oscillate between opposing regimes of truths and different sets of ethical concerns, often without merging them into a new process. Once double‐thinking is normalized at the level of society, it helps people to cope with the cognitive dissonance they experience in circumstances where it is difficult to change attitude and behavior. It also affects the organization of society by making contradictory arrangements appear normal. It promotes reflexive thinking and subversive action as much as it facilitates misrecognition of sociopolitical suppression and legitimization of symbolic violence. This state of affairs generates a form of modernity which appears, at least on the surface, to be comfortable with contradictory social arrangements, while deep down it remains ill at ease with its inner contradictions.     

3D heritage visualisation and the negotiation of authenticity: the ACCORD project*

This article examines the question of authenticity in relation to 3D visualisation of historic objects and monuments. Much of the literature locates their authenticity in the accuracy of the data and/or the realism of the resulting models. Yet critics argue that 3D visualisations undermine the experience of authenticity, disrupting people’s access to the materiality, biography and aura of their historic counterparts. The ACCORD project takes questions of authenticity and 3D visualisation into a new arena – that of community heritage practice – and uses rapid ethnographic methods to examine whether and how such visualisations acquire authenticity. The results demonstrate that subtle forms of migration and borrowing occur between the original and the digital, creating new forms of authenticity associated with the digital object. Likewise, the creation of digital models mediates the authenticity and status of their original counterparts through the networks of relations in which they are embedded. The current pre-occupation with the binary question of whether 3D digital models are authentic or not obscures the wider work that such objects do in respect to the cultural politics of ownership, attachment, place-making and regeneration. The article both advances theoretical debates and has important implications for heritage visualisation practice.     

Seismic refraction tomography surveys as a method for voids detection: an application to the archaeological park of Cava Ispica,Sicily, Italy

Geophysical surveys are commonly used in areas where the presence of ancient civilizations is historically documented. These investigations are able to detect through indirect methods the presence of bodies or structures in the subsoil measuring the variations of some physical parameters, obtaining information about archaeological remains without causing harm to them.

In the present study, we investigated the presence of anthropogenic buried cavities partially filled with rubble material, in an area located in the northern part of Cava Ispica, one of the most important archaeological sites located in south-eastern Sicily. The results of seismic refraction prospections, processed with tomographic methods, are presented and discussed. The entire valley contains prehistoric burial sites, Christian catacombs and residential units of various kinds. Despite the numerous searches made over past years, much still remains to be discovered.

The seismic refraction tomographic data, analyzed in 3D, revealed the presence of low velocity values (<400 m/s) areas that, considering the lithotypes locally present and the features of other archaeological structures discovered during previous surveys, can be ascribed to the presence of possible cavities. The obtained results show how such geophysical inspections represent an important preliminary tool for archaeological surveys.     

Bearing capacity assessment of a 14th century arch bridge in Lecco (Italy)

The article presents the results of an experimental and numerical investigation on Azzone Visconti bridge, a 14th century arch bridge in Lecco (northern Italy). Starting from the historical data and from an extensive mechanical characterization of both the soil constituting the riverbed and of the masonry constituting the piers, the aim of the study is to investigate the bearing capacity of the bridge. A testing loading scheme defined according to the current Italian Code is adopted to check the structural behavior. A simplified finite element structural model was conceived and calibrated as a control tool to safely perform the experimental tests. Post-test nonlinear finite element analyses have allowed the prediction of the bridge bearing capacity and the definition of the bridge class according to the Italian regulations.     

Experiencing virtual places: insights on the geographies of sim racing

Virtual spaces have emerged as everyday life spaces in contemporary societies. Very quickly, they have gained a cultural role in the daily life of their users, as these new territories gain their own communities, ideologies, and spatializations. However, little is known about how place is experienced in these different realms. This study seeks to understand place experience in virtual spaces, taking the sim racing virtual spaces as a case study and endeavoring to build a bridge between theory and empirics. This study uses ethnographic methods, which included a year-long participant observation period and a set of 20 in-depth interviews with users, in order to understand their narratives of the virtual geographies of two sim racing videogames: Gran Turismo and rFactor. The results of the study show that spirit of place, place ballets, and sense of place exist just as well among users of virtual spaces—despite the particularities of these new territories and their remaining tensions.     

Three Philosophers in Paradise: Kant,Tillich and Ricæur Interpret and Respond to Genesis 3

Abstract

The story of the first sin, committed by Adam and Eve in paradise, has not only attracted the attention of biblical scholars. Philosophers have also shown much interest in the story. Study of the relevant work of Kant, Tillich and Ricæur reveals two opposing ways of philosophically reading the biblical story and similar myths about the fate of the first human beings. According to the first way of reading, best represented by Kant and his followers, including Schiller, the fall was a fortunate event, one that set humanity on the path of development and progress. According to the second, represented by Tillich and Ricæur, it was a tragic event, but one that had its merits, for it allowed humans to develop their own potentialities. Freedom was obtaine at the cost of being estranged from humankind’s divine ground of being.