委内瑞拉，奥里诺科河上的探险

奥里诺科河是亚马逊河上一条光涌的逆流，更是一段有关虔诚的传教士和印第安土著人的古老故事。     

Red deer antler technology and early modern humans in Southeast Europe: an experimental study

In technological approaches to prehistoric industries, there is currently a renewed interest in the transformation of osseous materials. This approach requires the construction of a technical reference base of manufacturing stigmata, as well as of the procedures and methods used to produce tool blanks.One of the better known processes for the production of blanks in the Upper Palaeolithic is extraction by a double longitudinal groove, observed only in the Gravettian. Aurignacian artefacts indicate that during this period blanks were obtained through a procedure of longitudinal fracturing (splitting) or diffuse percussion fracturing. The manner of implementing these procedures is, however, still poorly known.In order to better characterise this stage in the manufacturing of blanks for antler points, we conducted an experimental study. Based on a thorough analysis of the Spanish archaeological materials, we tested the procedure of fracturing by indirect percussion on deer antler. The results provide new criteria for the identification of blanks and their manufacturing processes. They also emphasize the possibility of predetermining the size of the blank and, consequently, the size of future projectile point.     

Applying Geostatistical Analysis to Crime Data: Car-Related Thefts in the Baltic States

Geostatistical methods have rarely been applied to area-level offense data. This article demonstrates their potential for improving the interpretation and understanding of crime patterns using previously analyzed data about car-related thefts for Estonia, Latvia, and Lithuania in 2000. The variogram is used to inform about the scales of variation in offense, social, and economic data. Area-to-area and area-to-point Poisson kriging are used to filter the noise caused by the small number problem. The latter is also used to produce continuous maps of the estimated crime risk (expected number of crimes per 10,000 habitants), thereby reducing the visual bias of large spatial units. In seeking to detect the most likely crime clusters, the uncertainty attached to crime risk estimates is handled through a local cluster analysis using stochastic simulation. Factorial kriging analysis is used to estimate the local- and regional-scale spatial components of the crime risk and explanatory variables. Then regression modeling is used to determine which factors are associated with the risk of car-related theft at different scales.     

Rethinking the dynamics of woody vegetation in Uruguayan campos, 1800–2000

Simplistic interpretations of the impact of newcomers on South American ecosystems retain currency in the environmental history of the subcontinent. European settlement is almost invariably seen to produce a continuous and linear destruction of the environment. On the basis of several crisis narratives contained in historical documents, it is widely accepted that there was a severe decrease in the extent of woody vegetal formations in the Río de la Plata area during the 19th and 20th centuries. To test this perception, and to develop a more accurate and more complex analysis of the environmental consequences of European occupation, this article focuses on Uruguayan territory from c. 1800 to 2000. Changes in the shape and extent of forest lands in this broad area were assessed by comparing 251 land-survey charts, drawn between 1830 and 1860, with modern-day forest maps. Changes in shrubland abundance were assessed by comparing current distributions with those inferred from the accounts of five travellers who passed through this territory in the first half of the 19th century. Over 200 years, there is no evidence of major changes in forest distribution, extent or shape, and shrublands appear to be much more abundant today than in the early 19th century. These observations, although based on limited data, contradict the most common interpretation of regional environmental evolution. They confirm other claims that the idea of forest destruction in the early 19th century was created and manipulated by actors involved in land conflicts. Close examination of such socially-constructed crisis narratives, through the use of new archives, leads to a better understanding of recent changes in the South American environment.     

Racial Purity or Legal Clarity? The Status of Black Residents in Eighteenth-Century France

This article surveys the legislation concerning the residence of colonial slaves and nonwhites in general in eighteenth-century France. On the one hand, it shows an increasing concern with race on the part of the elite, heavily influenced by colonial attitudes, leading to laws increasingly reminiscent of apartheid; on the other hand, it reveals the state's inability to enforce its own regulations in the context of privilege, resulting in a legal confusion typical of late ancien-ŕegime law.     

A comparative geochemical study of bituminous boat remains from H3, As-Sabiyah (Kuwait), and RJ-2, Ra's al-Jinz (Oman)

This paper presents a geochemical analysis of fragments of bituminous amalgam from H3, As‐Sabiyah (Kuwait), and RJ‐2, Ra's al‐Jinz (Oman). The fragments bear barnacles on one side and reed impressions on the other, and are thought to have been part of the coating of reed‐bundle boats. The material from H3 dates to between 5300–4900 BC, while that of RJ‐2 dates to 2500–2100 BC. Samples from both sites were geochemically compared to archaeological and ethnographic material from Kosak Shamali (northern Syria, c.5000–4400 BC), RH‐5 (Oman, 4400–3500 BC) and Baghdad (central Iraq, 1900 AD). The composition of the bituminous amalgams was studied in detail. Rock‐Eval Pyrolysis gave a measure of Total Organic Carbon in the samples, and allowed an initial comparison of the data sets using various parameters. Examination of the proportions of soluble and insoluble organic matter allowed an assessment of the quantity of vegetal matter added to the bitumen to make the bituminous amalgam. The composition of the Ra's al‐Jinz material was studied using X‐Ray Diffraction analysis and thin‐section petrography, in order to assess the proportions of various minerals in the bituminous amalgams. It was concluded that the recipe for the bituminous mixture used to coat reed‐bundle and wooden boats did not differ significantly from that commonly used to make ‘mortar’ for architectural purposes in Mesopotamia. Traces of animal fats or fish oils were not found in the analysed Ra's al‐Jinz material, in contrast to previous hypotheses regarding the composition of the mixture. Comparison of the gross composition of extractable organic matter (the constituents of pure bitumen, soluble in chloroform or dichloromethane) showed the progressive effects of weathering on the samples. The isotopic composition of the bituminous material from H3 and the other sites was then compared to that of bitumen seeps and crude oils from Mesopotamia, Iran and Oman. The most significant result is that the material from As‐Sabiyah originated in Kuwait, at a surface seep at Burgan, while the material from Ra's al‐Jinz had a source in northern Mesopotamia.     

U.S. Foreign Policy and the Arab Spring: Balancing Values and Interests

The rapid and unpredictable changes in the Middle East collectively known as the “Arab Spring” are posing tremendous challenges to U.S. policy formation and action. This article will explore and evaluate evolving U.S. policy in the Middle East and its potential implications. There has always been a tension in American foreign policy between pursuing American “values” (foreign policy idealism) and protecting American “interests” (foreign policy realism). For decades, the United States has sought to “make the world safe for democracy,” while at the same time often supporting repressive, nondemocratic regimes because of national security or economic self‐interest. The tension between these two fundamentally distinct policy orientations has become even more pronounced as the United States tries to respond to the Arab Spring uprisings. Why did the United States actively support the rebels in Libya but not the protestors in Syria or Bahrain? Is there an emerging, coherent “Obama Doctrine” on intervention in Arab countries, or was Libya just a “one‐off” event? These are some of the questions that this article will attempt to answer.     

A Fractal Approach to Identifying Urban Boundaries. 城市边界识别的分形方法

Fractal geometry can be used for determining the morphological boundaries of metropolitan areas. A two‐step method is proposed here: (1) Minkowski's dilation is applied to detect any multiscale spatial discontinuity and (2) a distance threshold is located on the dilation curve corresponding to a major change in its behavior. We therefore measure the maximum curvature of the dilation curve. The method is tested on theoretical urban patterns and on several European cities to identify their morphological boundaries and to track boundary changes over space and time. Results obtained show that cities characterized by comparable global densities may exhibit different distance thresholds. The less the distances separating buildings differ between an urban agglomeration and its surrounding built landscape, the greater the distance threshold. The fewer the buildings that are connected across scales, the greater the distance threshold.     

Defining the relationship between Australia and the European Union: is the framework treaty enough?

Australia is currently negotiating a framework treaty with the European Union (EU) that aims at closer cooperation on a wide range of shared policy goals. The treaty is not expected to include trade-liberalisation commitments. This article queries why this is, given the importance of trade and business relations with the EU for Australia, and the fact that the EU exerts international influence primarily as a trade power, rather than a foreign and security policy power. Since 2006, the EU has also been negotiating ‘new-generation’ bilateral free trade agreements (FTAs), focusing on tariffs and regulatory non-tariff trade barriers. It has now committed itself to FTA negotiations with many of Australia's trade partners in Asia and the Organisation for Economic Co-operation and Development. An FTA and a complementary framework treaty were concluded with South Korea in 2010, and the EU is currently negotiating a similar package with Canada. As Australia and Canada are comparable trade partners for the EU, the article argues that an FTA on the EU–Canada model could be a more effective avenue for Australia to achieve deeper engagement with the EU.