New Titanium Connectors for the Columns Capitals of the Classical Temple of Apollo Epikourios

The columns of monumental buildings in ancient Greece were provided with a pair of timber “empolia” (plugs) and a “pole” (pin), at interfaces between stone members (drums, capital). In order to reinstate this connection system, in columns capitals that were repaired, during the ongoing restoration of the classical temple of Apollo Epikourios (Greece), new poles and empolia made of titanium were installed. The titanium elements were designed to have similar shape and shear strength to the estimated respective characteristics of the ancient poles and empolia. Moreover, their effect on the seismic behaviour of the temple columns was numerically investigated. The investigation showed that, within the range of strong earthquakes which are anticipated in the area of the monument, the installation of a single pole at the interface between the capital and the uppermost drum leads to limited reduction of the expected maximum and residual deformations of the column, without altering significantly the main characteristics of its rocking response. Furthermore, poles located at every column interface ensures significant limitation of the column residual deformations. Prior to implementation of the titanium poles and empolia, the main aspects of their design were verified through specially designed experiments.     

Effectiveness of FRCM Reinforcement Applied to Masonry Walls Subject to Axial Force and Out-Of-Plane Loads Evaluated by Experimental and Numerical Studies

ABSTRACT

An experimental campaign and a numerical analysis devoted to the investigation of the out-of-plane behavior of masonry walls reinforced with Fiber Reinforced Cementitious Matrix (FRCM) are presented here. The main goal of this study is to analyze and evaluate the effectiveness of the strengthening system, by discussing failure modes and capacity of strengthened masonry walls, in order to assess their behavior under out-of-plane horizontal actions, such as, for example, seismic actions. A purposely designed experimental set-up, able to separately and independently apply an axial force and out-of-plane horizontal actions on masonry walls, was used. Experimental results are discussed and compared with the outcomes of nonlinear analyses performed on simplified finite element models of the walls. A proper evaluation of the flexural capacity of FRCM strengthened walls is the first step of the ongoing process of drawing reliable code guidelines leading to a safe design of strengthened masonry structures.     

Seismic behavior of two Portuguese adobe buildings: Part I - in-plane cyclic testing of a full-scale adobe wall

This article addresses the laboratory testing of a full-scale double-T shaped adobe wall, under in-plane horizontal cyclic loading of increasing amplitude, with the aim of contributing to the understanding of the seismic behavior of adobe structures. The wall was built with lime adobes taken from an existing building and mortar with a traditional composition. The behavior of the wall was assessed in terms of: shear stress versus horizontal drift and moment versus rotation relationships; maximum lateral strength; drift and rotation at peak stress; evolution of stiffness, lateral displacements, dissipated energy, and natural frequency; and damage pattern. The wall exhibited brittle behavior and in-plane strength corresponding to 56% of the vertical load. Cracking was observed with an X-shaped pattern whereas no sliding occurred at its base. This research supported the subsequent development of a repair and retrofit solution and also of numerical models to simulate the seismic behavior of two adobe buildings.     

Higher education institutions,economic growth and GDP per capita in European Union countries

This paper presents an estimation of the contribution of Higher Education Institutions (HEIs) to economic growth and the Gross Domestic Product per capita of the European (EU) countries over the period 2000–2015. For this purpose, we analyse the universities’ effects on the supply side of their national economies, especially the contribution of the R&D of HEIs to technological capital of the European (EU) countries. We proposed a methodology of counterfactual scenarios, which assume a hypothetical situation in which HEIs do not exist, to estimating the effects of HEIs, applying techniques of growth accounting. The results obtained indicate that these effects are a significant source of growth in European (EU) countries, contributing to mitigating the adverse effects of the periods of crisis. The estimates show that GDP per capita would currently be more than 11% higher than that corresponding to a scenario without HEIs. The results obtained also show significate differences in GDP per capita between European (EU) countries associated with the activity of HEIs.     

The later prehistory of mainland Southeast Asia

Until the recent expansion of research into the prehistory of mainland Southeast Asia, the development of civilizations employing Indian religious and political concepts had been seen as a major fulcrum in the area's history. The prehistoric sequence in the area is reviewed, with particular attention being paid to evidence for ritual, display, exchange, and ranking behavior within lowland sedentary communities. These date to the two or three millennia preceding Indian contact. It is argued that already by the end of the prehistoric period, there were complex centralized societies with a long tradition of recognizing status differentials among individuals, affiliated groups, and communities. The sequence incorporates the exploitation of rice, and bronze and iron working. The chronology of these innovations is compared with that in China. It is not possible at present to argue for single or multiple origins, but the area of southern China is suggested as a crucial one in further research to resolve these issues.     

西安市市民出游行为研究

本文在详细的市场调查基础上,分析了西安市民出游的行为特征,重点探讨了行为特征形成的深层原因,并对以西安为代表的内陆大城市和沿海城市居民出游规律做了对比分析,从而对西安市民的出游行为有了较深刻的认识,为西安市旅游决策提供了科学的依据。     

微区位研究的新思维

论文从区位尺度观、空间关联、行为观、空间竞争、平衡最优理论等五个方面探讨微观区位研究的新视角、新思维。指出微区位研究与传统的区位研究的区位选择主体、空间范围、影响因素都有很大不同。区位选择对象与周边环境的空间关联制约微观环境下的区位空间类型。经营者与消费者的行为、文化心理对微区位选择构成重要影响。市场的空间竞争关系到布局对象的生存与发展。微区位追求的目标应当是经营者的最大利润与消费者的最大剩余效用之间的平衡,最大限度利用空间外部效果对微区位选择具有重要意义。     

‘I'm protective of this yard’: long-term homeless persons' construction of home place and workplace in a historical public space

Though research has examined the ways homeless persons work to be in public space, less research covers tying these ways to personal and social needs associated with home place and workplace. Additionally, scholars have given less attention to how central public spaces may not only be integral to long-term homeless persons' daily paths but also how they may be employed differently from marginal public spaces. In this article, I explain how long-term homeless persons attempted to make a historical-tourist public space, the Jackson Square area in New Orleans' French Quarter, personally and socially meaningful as home place and workplace. Drawing from participant observation and observation, I examine long-term homeless persons' attachment to Jackson Square. I argue that the Square's historical and tourist attraction status actually supported long-term homeless persons' desire and ability to occupy it in significant ways. This status along with long-term homeless persons' negotiating practices and inconsistent practices of authority and policing by those with (more) power made it possible for the Jackson Square area to become long-term homeless persons' home place and workplace.     

History of the Discovery of the Antipsychotic Dopamine D2 Receptor: A Basis for the Dopamine Hypothesis of Schizophrenia

The 1975 publication of Seeman et al. (Proc Nat Acad Sci, USA), reporting the discovery of the antipsychotic receptor in the brain, is a classic example of translational medicine research. In searching for a pathophysiological mechanism of psychosis, the team sought to identify sites that bound the antipsychotic drug haloperidol. Their criterion was that haloperidol bound to the site at one to two nanomoles per liter, corresponding to haloperidol concentrations found in spinal fluid or plasma water in treated patients. They requested de novo synthesis of tritiated haloperidol, and it readily detected specific haloperidol binding sites in brain striatum. With dopamine binding the haloperidol-labeled sites with higher potency than other neurotransmitters, the sites were named antipsychotic/dopamine receptors (now designated dopamine D2 receptors). Most significantly, they found that all antipsychotics bound these sites at concentrations and with a rank order of potencies that were directly related to the mean daily antipsychotic dose taken by patients with schizophrenia. Their findings enabled screening for new antipsychotics, initiated D2 receptor measurements in brain of living patients, and determination of minimum occupancy (65%) of D2 receptors for antipsychotic benefit. The collective work is generally viewed as providing a fundamental basis for the dopamine hypothesis of schizophrenia.     

Central Park against the streets: the enclosure of public space cultures in mid-nineteenth century New York

The industrialization of New York and its rise to economic dominance brought about a major restructuring of street life and unleashed an array of contradictory everyday urban cultures. In a still under-regulated environment, the commoning of public space became a key sociospatial capital that helped the working classes resolve their reproduction in a way the elite found disturbing and far removed from the civic order they were trying to instil. This article draws on recent theorizations of the commons/enclosure dialectic to develop a comparative analysis of the cultures of public space use vis-à-vis the practices prescribed by Central Park in its attempt to reform everyday spatialities. The park is understood here as an early episode in the project of imposing new social relations through the enclosure of public conduct—a first effort to tame the urban commons and prevent the subaltern appropriation of public space. Following a preliminary discussion of the economic and social determinants and configuration of the material cultures of public space use in Manhattan, the article studies the park's strategies as a special type of enclosure, consisting not of the usurping of common land for private profit but of the mobilization of public space to shift behaviors from one regime of publicity to another.