Modelling and Seismic Response Analysis of Italian Code-Conforming Base-Isolated Buildings

ABSTRACT

This paper reports on results of nonlinear analyses performed within the RINTC project on an RC building isolated with different systems (High Damping Rubber Bearings, High Damping Rubber Bearings and Flat Sliding Bearings, Friction Pendulum System) and designed according to the Italian design code. The seismic response has been evaluated under different seismic input levels of two sites with different hazard and by considering two Limit States: Global Collapse and Usability-Preventing Damage. The influence of seismic stoppers and modelling uncertainties is also evaluated. Results permit to compute the implicit collapse risk and to identify critical aspects of current design procedures.     

A Cost-Based Ripley’s <Emphasis Type="Italic">K</Emphasis> Function to Assess Social Strategies in Settlement Patterning

Most quantitative approaches to distributional analysis in archaeology assume a homogeneous study surface that is amenable to easy generalisations. This framework has been widely used to describe settlement processes, disregarding the spatial heterogeneity inherent to geographic reality. In other words, researchers have often assumed that the correlation between the elements of a spatial distribution is a function of the Euclidean distance (i.e. straight line distance) between them. Other archaeological studies have tested alternative measures to Euclidean distances, such as cost-based ones, both to describe optimal routes and to assess spatial autocorrelation in a point pattern. Nevertheless, until now there has been no suitable model to introduce these measures into spatial statistical equations. In order to overcome this obstacle, we approach the implementation problem inversely by embedding the spatial pattern under study into a Euclidean frame of reference based on its cost-distance pairwise matrix. This paper describes the application of this methodology on one of the main tools used by archaeologists to assess settlement patterns: Ripley’s K function. We present two case studies, covering both macroscale and mesoscale, with significant variations in the results depending on the use of the Euclidean or cost-based approach. Data, functions and results have been R-packaged for the sake of reproducibility and reusability, allowing other researchers to build upon our methods.     

HOME-BASED MEDICAL SERVICES GET POPULAR IN LHASA

正Whenever anybody feels uncomfortable,a doctor,once called,will immediately come to provide his or her services.As part of the new wave of doctors providing their services to smaller communities,"homebased doctors"are gradually being introduced to common civilian homes.At present,Lhasa City has been positively promoted the home-     

Timber economy in the Roman Age: charcoal data from the key site of Herculaneum (Naples,Italy)

The city of Herculaneum (Naples, southern Italy), buried by the volcanic eruption of Mount Somma-Vesuvius in 79 ad, is a key site for understanding the timber economy during the Roman period. In this paper, the results of charcoal analysis of different building element types are presented. Beams, joists, poles, planks and door and window frames were investigated allowing us a view of which timber the Romans preferred for building in this area. We also fit the taxonomic results into the reconstruction of the ancient Campanian landscape, and finally, we discuss the knowledge that the Romans had about the technological properties of the wood that they used for building and the possible selection criteria that they followed in choosing them. Coniferous timber is the preferred material for building purposes. Abies alba is especially used, this fact confirming its stronger presence in southern Italian woods during the past and suggesting that its decline is mainly due to human overexploitation. The large presence of Cupressus sempervirens, selectively used for the production of poles, confirms that this tree was cultivated in plantations for timber production in the Vesuvius area. Furthermore, it might indicate that cypress could have been present as a natural tree in the local vegetation, suggesting a forest type that nowadays almost completely disappeared from this area and from the entire Italy. The findings of Juglans regia, Pinus pinea and Olea europaea, typical elements of the Mediterranean cultural landscape, show that their use was not limited to fruit production and that Romans also appreciated their timber. Beside these local resources, the presence of Picea abies and Picea/Larix indicates the importation of timber from northerly regions, probably the northern Apennines and the Alps.     

博物馆影响力刍议

博物馆影响力的程度制约着博物馆社会价值实现充分与否,因而博物馆影响力问题处于博物馆理论体系的核心位置。博物馆影响力的产生基于博物馆物质资源、无形资源与现代媒介的应用;其特点体现为复杂性、非权力性与缓释性;其影响涉及公众、社会与同行业三个层面。而对博物馆影响力理论研究的最终目的在于寻求提升之路径。     

Decolonizing travesti space in Buenos Aires: race,sexuality, and sideways relationality

Scholars of space usually neglect the history of travesti populations in Latin America. It is misrepresented not only by disciplinary blind spots but also by global narratives concerned with rehabilitating queer subjects within homonormative projects. Analyzing neoliberal narratives that delink conflicts about racialization and sexuality in Argentina, this article makes room to decolonize the study of travesti experience and embodiment in Buenos Aires's red zone. It examines a network of racialized travestis and their spatial practices, including their migration from the Andean northwest to the sex-work circuits of Buenos Aires. Finally, this article introduces the notion of sideways relationality to account for the cultural and spatial labor that racialized travestis perform at the oppositional margins of homonormative reflexivity.     

浅析《诗经》中的玉文化

本文整理了《诗经》中与玉有关的文献资料,并根据不同的功用,将其分为装饰物、祭祀用器、指代美好事物、身份的象征、用于社会交往、赏赐品等六类,认为其主要反映出周人的用玉观念。通过对这些资料及其所反映的玉文化的分析,可以得出几点认识:《周礼》中关于祭祀用六器的记载确有其事;玉器作为礼器有着其特定的使用环境;而周代以玉用于赏赐和社会交往的文化功能,为我们审视墓葬出土玉器提供了新的思考角度。     

Probable persistence of the remains of a Rouget-Neumann sheath into the canalicular system of ancient human bone

Examining histological sections obtained from human bones from Iron Age archaeological excavations (about third to fifth century BC , Alfedena and Sulmona, central Italy), the authors show the presence of an amorphous, afibrillary substance inside the osseous canaliculus in decalcified sections. This substance has shown unusual chromaffinity to staining using the Schmorl method with thionine and phosphowolframic acid. It is probably formed by acid mucopolysaccharides obtained from a transitory betametachromasia with toluidine blue staining at neutral pH. This metachromasia persists after digestion in bacterial collagenesis, but disappears after digestion in bovine testicular jaluronidasis. These reactions indicate that the endocanalicular substance may represent well-kept remains of a Rouget-Neumann sheath, which surrounds cytoplasmic extensions of osteocytes.     

新形势下对我国民族地区税收优惠政策的思考

民族地区税收优惠政策大多已经停止执行．东部和西部经济发展出现更大差距。必须正视我国区域发展不平衡的问题,对民族地区税收优惠政策进行调整和补充。使民族地区财政收支矛盾得以缓解并逐步实现财政良性循环。     

Revue d’histoire des sciences humaines

Vie Scientifique

Revue d’histoire des sciences humaines