New tools for rock art modelling: automated sensor integration in Pindal Cave

This paper presents the integration of automated sensors based on a terrestrial laser scanner and an amateur digital camera with the aim of generating a photorealistic three-dimensional (3D) model of the Principal Panel in Pindal Cave (Spain). The approach developed for 3D modelling overcomes many of the problems related to the independent implementation of photogrammetry and laser scanning. Particularly, a sequential and hierarchical approach was developed based on the processing and matching of images from the camera (camera image) and the laser scanner (range image). The results obtained demonstrate that the workflow for this model is automatic, effective, and accurate. The presented approach was found to create hyper-realistic models, even improving upon human visual capabilities.     

The Groin Vaults of St. John Hospital in Jerusalem: An Experimental Analysis on a Scale Model

The St. John Hospital is part of a larger complex of buildings known as the Hospitallers Quarter, located south of the Holy Sepulchre in Jerusalem. At present, the hospital looks like an irregular volume both in height and in plan; it is covered by ten groin vaults resting on very stocky pillars. Each vault is formed by intersecting double curvature surfaces. In order to verify the effectiveness of continuous carbon fiber reinforced polymer sheets reinforcement, bonded at the extrados of vaults, laboratory tests were carried out on a 1:5 scale model, built with materials and construction techniques similar to those of the real building. Experimental tests were performed on the unstrengthened and strengthened vault. The experimental results shown that the strengthening system is able to increase the collapse load of the vault, without substantial variation of the initial stiffness.     

Green infrastructure under pressure. A global narrative between regional vision and local implementation

This paper focuses on green infrastructure planning in three different regions, namely, the Ruhr in Germany, the Capital Region of Denmark and Greater Manchester in the UK. We investigate planning cultural research heuristics and propose a conceptual refinement of existing planning cultural research and approaches. We use framing and storytelling to show how societal beliefs and cultural assumptions are consolidated as spatial frameworks that guide planning practice. Theories of spatial governance describe how spatial frames are mediated, accepted and changed through institutionalized structures. We present arguments from urban design and implementation research to illustrate how planning ideas materialize. The empirical material presented in this paper shows how cultures of green infrastructure planning operate in diverse spatial contexts and that a dynamic perspective is useful for understanding how planning cultures develop and change over time.     

‘Are We Ready?’: Belgium and the Entente’s Military Planning for a War Against Germany, 1906–1914

Abstract

While historians have consistently focused on the development of German, French, and British planning in the years preceding the Great War, few have truly acknowledged neutral Belgium’s role in defining the strategic paradigm of 1914. Belgium held the strategic key to the opening salvos of a future Franco-German war, and each of its Guarantors were determined to obtain the initiative. While German planners were prepared to seize it by force, the Entente (particularly Britain), remained wary of its obligations. Instead, Britain sought to determine Belgian intentions and capabilities through secret and unbinding staff conversations in 1906 and 1912. The former proved useful in establishing a framework for co-operation but ultimately came to nothing. By the time they were resumed in 1912, Anglo-Belgian diplomatic relations had soured, while Belgium’s military reforms and its emergence as a colonial power gave it a renewed sense of confidence. Belgian officials were determined to retain the kingdom’s agency in the formulation of its defence policy and resented Entente suggestions of pre-emptive action. Neutrality was subordinated to independence, which itself could not be guaranteed were Belgium to conclude even the loosest of military accords. Consequently, Entente plans were forced surrender the strategic initiative to the Germans.     

Use of Pushover Analysis for Predicting Seismic Response of Irregular Buildings: A Case Study

Structural irregularity undermines capability of conventional methods for 2D pushover analysis to closely approximate results from inelastic dynamic analysis. In recent years, different methods have been developed to overcome such limitation and their suitability has been checked with reference either to idealized building models or to geometrically simple tested structures. In this paper, suitability of one such method, proposed by Fajfar et al. [2005] Fajfar, P., Maru?i?, D. and Perus, I. 2005. Torsional effects in the pushover-based seismic analysis of buildings. Journal of Earthquake Engineering, 9(6): 831–854. [Taylor & Francis Online], [Web of Science ®] , [Google Scholar], is evaluated considering an existing school building which presents both vertical and plan irregularities. Types of irregularity encompass not only those usually considered by seismic codes but also those deriving from a bad conceptual design and construction inaccuracies, very frequent at the year of construction (1974). It is found that, even under such complex irregularity conditions, this ‘modified’ pushover analysis correlates well results from inelastic dynamic analysis almost up to failure, since, in most cases, its predictions of interstorey drifts and plastic rotations are conservatively close to values from inelastic dynamic analysis. Even failure mechanism, consisting of a floor mechanism at the third level, is correctly predicted, thus demonstrating adequacy of such method for actual framed structures.     

Manners of the market place

William G. Davis. Social Relations in a Philippine Market: Self‐interest and Subjectivity. Berkeley and Los Angeles: University of California Press, 1973. xiii + 315 pp. Appendixes, bibliography and index. $12.50.     

Federigo Enriques,Gaston Bachelard et Ferdinand Gonseth

The development and complexity of the debate about the conceptual structure of science in the XX^th century gave birth to a new discipline, the history of epistemology, with the aim of giving a critical history of our «epistemological heritage» with suitable methodologies of a historical and theoretical nature. A critical history of the philosophy of science on more «Wenden», besides the neo-positivistic and post-neo-positivistic ones; in Italy and France, in the first period of the XX^th century, developed a tradition of epistemological research in a neo-rationalistic sense with specific theoretical characteristics, particularly for the relevance assigned to the historicity of science. The Italian-French epistemology favored the study of the relationship between mathematical and physical thought, such as can be characterized as a really autonomous physical-mathematical epistemology; this different historical and epistemological approach, first elaborate by Federigo Enriques and then by Gaston Bachelard, Albert Lautman and Ferdinand Gonseth, allowed us to understand in the 30's the «implicit philosophy» in the works of Kurt Gödel and Hermann Weyl.     

On the Performance of the Subtour Elimination Constraints Approach for the p‐Regions Problem: A Computational Study

The p‐regions is a mixed integer programming (MIP) model for the exhaustive clustering of a set of n geographic areas into p spatially contiguous regions while minimizing measures of intraregional heterogeneity. This is an NP‐hard problem that requires a constant research of strategies to increase the size of instances that can be solved using exact optimization techniques. In this article, we explore the benefits of an iterative process that begins by solving the relaxed version of the p‐regions that removes the constraints that guarantee the spatial contiguity of the regions. Then, additional constraints are incorporated iteratively to solve spatial discontinuities in the regions. In particular we explore the relationship between the level of spatial autocorrelation of the aggregation variable and the benefits obtained from this iterative process. The results show that high levels of spatial autocorrelation reduce computational times because the spatial patterns tend to create spatially contiguous regions. However, we found that the greatest benefits are obtained in two situations: (1) when ; and (2) when the parameter p is close to the number of clusters in the spatial pattern of the aggregation variable.