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21.
José León García-Rodríguez Carlos Castilla-Gutiérrez 《European Planning Studies》2018,26(5):1028-1040
The defining element of island regions is their isolation, the separation of the islands from the mainland; there is an inherent notion of natural border. This condition has preserved ecosystems and protected against outside threats, stimulating ‘coevolution’ between man and the environment, a fundamental ingredient of sustainability. But insularity also means the evident added costs of access to markets which, together with territorial limits and the scarcity of basic resources, especially on small islands, hinders their socioeconomic development. These costs are even greater in the case of outlying islands, which suffer from a ‘double insularity’ in the form of both external and internal borders. For this reason, it is common for governments to establish various forms of support, from tax exemptions to the creation of permanent aid funds, like those implemented by the European Union for the outermost regions. This article discusses these aspects in the case of the Canary Islands, an example of a European outermost island region. The findings show that the support measures have not always been favourable for all the islands. 相似文献
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日本史学中“近世”一词,出现于江户时代,原是当时人自指,即“最近时代”之义。明治维新之后,“近世”所指时代仍为江户时代,其涵义则与近代对立,以至于被归入中世"第二次世界大战后史学的发展使近世得以脱离中世范畴,被视为一个独立时代概念。而在地域研究和近代化论兴起的背景下,近世与当代的关系得到强调,近世的内涵又出现了“最近时代”的意味。“近世”概念出现至今,经历了变义、独立而回归的过程" 相似文献
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Simone Mulazzani François-Xavier Le Bourdonnec Lotfi Belhouchet Gérard Poupeau Jamel Zoughlami Stéphan Dubernet Emiliano Tufano Yannick Lefrais Rym Khedhaier 《Journal of archaeological science》2010
In the present paper, it is shown that in the Hergla area (eastern Tunisia), obsidian was present from the early to at least the late sixth millennium cal BC. The presence of cores indicates that obsidian knapping was at least partly carried out in situ. The origin of these obsidians was determined from their elemental composition, by comparison with those originating from western Mediterranean potential sources, including analyses of new samples from the nearby Pantelleria Island. All obsidians were measured following the same protocol, by particle induced X-ray emission or by scanning electron microscopy/energy dispersion spectrometry. All the Hergla obsidians were found to originate from the Balata dei Turchi sources of Pantelleria. A review of the present body of knowledge on eastern Maghreb suggests, in spite of the still very preliminary data available, that Pantelleria was almost its unique provider of obsidians from the Epipalaeolithic to and during the Neolithic. However, the relative importance of the two main Pantellerian sources of Balata dei Turchi and Lago di Venere as providers of obsidian to eastern Maghreb remains to be investigated. 相似文献
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Gérard Poupeau François-Xavier Le Bourdonnec Tristan Carter Sarah Delerue M. Steven Shackley Jean-Alix Barrat Stéphan Dubernet Philippe Moretto Thomas Calligaro Marina Milić Katsuji Kobayashi 《Journal of archaeological science》2010
In this paper we evaluate the relative analytical capabilities of SEM-EDS, PIXE and EDXRF for characterizing archaeologically significant Anatolian obsidians on the basis of their elemental compositions. The study involves 54 geological samples from various sources, together with an archaeological case study involving 100 artifacts from Neolithic Çatalhöyük (central Anatolia). With each technique the artifacts formed two compositional groups that correlated with the East Göllü Da? and Nenezi Da? sources. The non-destructive capabilities of these methods are emphasized (albeit with certain analytical limitations in the case of SEM-EDS), suggesting important new techniques for Near Eastern obsidian provenance studies. 相似文献
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New Developments in Spatial Economics and Economic Geography,edited by Philip McCann. 2013. Series: The International Library of Critical Writings in Economics. Cheltenham,U.K. and Northampton,Massachusetts: Edward Elgar. 514 + xiii. ISBN: 978‐1‐84844‐432‐4, $252
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Julie Le Gallo 《Journal of regional science》2016,56(1):184-186
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Many data sets collected for study areas consist of data values collected on a square lattice or for a set of pixels. Remotely sensed data provide perhaps the most common example. Frequently, we wish to know whether there are subregions of the study area that exhibit spatial clustering. In this article, we suggest how an approach for finding spatial clusters may be combined with the common practice of using 3‐by‐3 and 5‐by‐5 smoothing filters or kernels to construct two simple and easy‐to‐implement scan‐type tests. A simulation experiment shows that the power of these tests to find clusters compares favorably with an alternative test that is more complicated. The tests use simulated data, changes in a remotely sensed image for a study region in Texas, and data about wheat yields. Muchas bases de datos que se recopilan para una zona de estudio, consisten en valores recopilados en una retícula cuadrada o en un conjunto de pixeles. Los datos obtenidos por sensores remotos son quizá el ejemplo más común. Frecuentemente deseamos saber si existen subregiones de la zona de estudio que exhiban agrupamiento espacial. En este artículo, sugerimos cómo una aproximación para ubicar agrupamientos espaciales se puede combinar con la práctica común de usar filtros de suavizado (kernels) de 3‐por‐3 y 5‐por‐5 filtros, para construir dos test tipo scan, sencillos y fáciles de implementar. Un experimento de simulación demuestra que el poder de estas pruebas para ubicar agrupamientos, se compara favorablemente frente a otra prueba alternativa, que resulta más complicada. Las pruebas usan datos simulados, cambios en una imagen de satélite para un área de estudio en Texas, y con data acerca de los rendimientos de cultivos de trigo. 研究区收集的许多数据集是由基于方格网和像素采集的数据值组成的,遥感数据可能提供了最常见的范例。通常,我们希望了解研究区的子区域是否呈现空间集聚特征。本文提出了一种如何发现空间集聚的方法,可以与采用3*3和5*5平滑滤波或核函数的普通试验相结合,构造两个简单且易于操作的扫描试验。模拟实验结果显示,这些试验在寻找聚集特征的性能上优于更复杂的可替换性试验。文中所用的仿真模拟数据来源于德克萨斯州小麦产量的多时相遥感影像。 相似文献
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新华日报馆系全面抗战至解放战争初期中共中央在国统区设立的出版发行机构。本次工作以重庆红岩革命历史博物馆收藏的报馆出版物为研究对象和基础资料,以超景深三维显微系统、扫描电子显微镜、X射线能谱仪及pH测定仪对纤维构成、填料种类、造纸技术及纸张酸度进行检测分析。结合相关史料,发现报馆用纸受政治经济环境、造纸工艺、用纸策略影响,兼用机制纸和手工纸:早期(1938年1月11日《新华日报》创刊至同年10月24日)多用机制白报纸;中期(1938年10月25日报馆迁渝至抗战胜利前)渐用川渝改良土纸;晚期(抗战胜利后至1947年2月报馆被封闭)继用土纸。本研究可为新华日报馆出版物及同类文物的保护利用提供参考。 相似文献