Entretien avec pierre hassner

Sans résumé CERI, 26 octobre 2001     

盘龙城与《盘龙城》

本对《盘龙城》报告体例、遗迹、遗物以及附录分别作出了评述,除了肯定报告的优点之外,主要陈述了与报告编不同的看法,如：报告材料缺乏类型学分析,因此对于遗存时代的判断依据不足,有的甚至没有依据;报告对盘龙城作为一个整体聚落特点体现不够,对一些遗迹性质的判断容易引起争议;不少的数据、图像资料——有的是很重要的材料——存在问题。本对于研究引用盘龙城报告材料、判断盘龙城及其遗迹、遗物性质,应当有所帮助。     

External Financial Liberalization and Macroeconomic Performance in Emerging Countries: An Empirical Evaluation of the Brazilian Case

This article evaluates the effects of external financial liberalization on Brazilian macroeconomic performance from 1995 to 2016. Its main contributions are to assess the influence of the global financial cycle on the level of external financial liberalization and to analyse the short- and long-run macroeconomic effects of such liberalization on the performance of a peripheral economy in the global currency hierarchy. Methodologically, the article employs the Markov-Switching Vector Autoregressive and Vector Error Correction models. The results show that the global financial cycle directly affects cross-border financial flows and frames the impact of external financial liberalization on the macroeconomic performance. The article concludes that external financial liberalization has negative macroeconomic effects in the short run and generates a trade-off between stability and growth in the long run.     

Use of robust methods to determine quadratic surfaces: application to heritage

3D surveys of archaeological elements and the construction of virtual models enable us to reconstruct historical sites. They provide useful data to select specific building processes.Photogrammetry and Terrestrial Laser Scanning (TLS) are the most common techniques to obtain synthetically heritage models. These techniques provide massive data which can only be managed by replacing them by primitive shapes, thereby obtaining more simple models and the explicit geometry of the element. Statistical and robust methods are used for this substitution, thereby avoiding the common errors due to measuring. Of these methods, the most widely used are the least-median-of-squares (LMedS) and the RANSAC method.Another computation method consists in recursive processes based on evolutive-type algorithms to adjust the model to the data captured.This paper describes two surface computation methodologies to determine the modelling of a column shaft located in temple G of the archaeological park of Selinunte (Sicily).     

A laboratory cave for the study of wall degradation in rock art caves: an implementation in the Vézère area

The aim of this proposal is to present an original approach to the study and preservation of rock art caves. A multidisciplinary study of cave wall alteration will be performed to understand the impact of environmental context on the evolution of wall surfaces. The approach involves the choice of a cave with characteristics similar to painted caves in the studied area (Vézère Valley in Dordogne, France): e.g., cave wall alteration, lithology, morphology, etc. This selected cave is intended to become a laboratory cave, monitored for the acquisition of chemical, physical and biological environmental data on bedrock, air and fluids along with their characteristics. A cave without art or archaeological interest has been chosen specifically to conduct experiments, to make in situ analysis and to obtain samples. The results are to be completed by specific observations in several other caves and compiled in a database.