全文获取类型
收费全文 | 598篇 |
免费 | 43篇 |
出版年
2024年 | 6篇 |
2023年 | 15篇 |
2022年 | 2篇 |
2021年 | 5篇 |
2020年 | 28篇 |
2019年 | 32篇 |
2018年 | 58篇 |
2017年 | 51篇 |
2016年 | 37篇 |
2015年 | 29篇 |
2014年 | 25篇 |
2013年 | 119篇 |
2012年 | 24篇 |
2011年 | 27篇 |
2010年 | 31篇 |
2009年 | 19篇 |
2008年 | 19篇 |
2007年 | 15篇 |
2006年 | 9篇 |
2005年 | 5篇 |
2004年 | 7篇 |
2003年 | 6篇 |
2002年 | 11篇 |
2001年 | 4篇 |
2000年 | 5篇 |
1999年 | 4篇 |
1998年 | 6篇 |
1997年 | 2篇 |
1996年 | 3篇 |
1995年 | 5篇 |
1994年 | 4篇 |
1993年 | 3篇 |
1992年 | 3篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1989年 | 4篇 |
1988年 | 1篇 |
1987年 | 2篇 |
1986年 | 2篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1974年 | 1篇 |
1973年 | 1篇 |
1972年 | 1篇 |
1971年 | 1篇 |
排序方式: 共有641条查询结果,搜索用时 15 毫秒
81.
The bearded vulture (Gypaetus barbatus), a bird or prey that mainly feeds on bones of large mammal carcasses, has been recently evidenced as an accumulating agent with significant contributions to palaeontological assemblages in caves and shelters, but extremely rare at archaeological sites. The results of the taphonomic analyses carried out in the Upper Palaeolithic layers of El Mirón Cave (Cantabrian Spain), which are presented here, evidence the existence of special digestive marks and a typical skeletal pattern in a noticeable amount of small and medium-sized ungulates bones. This fact suggest that a representative part of the bone assemblage has been caused by bearded vultures, and strengthens the idea that this bird has to be definitely included among other potential non-human accumulators in archaeological sites. 相似文献
82.
Marie-Hélène Moncel María Gema Chacón Aude Coudenneau Paul Fernandes 《Journal of archaeological science》2009
The lithic assemblage from the Middle Palaeolithic site of Payre (Rhone Valley, France) contains a large number of convergent tools and pointed tools of various shapes, sizes and retouch types. These were excavated from several archaeological units, dating from marine isotopic stages 8–5, which also yielded human skeletal remains. Consideration of this large tool kit has led to an improved analysis of Middle Palaeolithic tools with two retouched convergent edges. The 350 tools were not described within the classical typological framework, but, rather, from a lithic technological perspective in relation to a discoid debitage. In addition, an initial macroscopic use-wear analysis aided in establishing whether they were used according to their technical and/or morphological features. The Middle Palaeolithic convergent tools from Payre are shown to be quite diversified, and the question of the significance of the retouch and the definition of the various types is addressed. Initial functional results indicate that a clear relationship between shape and function cannot be easily established, and that these tools were used as hand tools. This study contributes to the debate on the use of stone tip spears in the Early European Middle Palaeolithic. 相似文献
83.
Maxime Aubert Ian S. Williams Katarina Boljkovac Ian Moffat Marie-Hélène Moncel Elise Dufour Rainer Grün 《Journal of archaeological science》2012
A Sensitive High Resolution Ion MicroProbe (SHRIMP II) has been used to make high spatial resolution in situ micro-analyses of oxygen isotopes in fish otoliths, and teeth from fossil herbivores and a Neanderthal. Large intra-tooth variations in the oxygen isotopic composition (up to 9‰) were observed in the enamel of herbivores from the Neanderthal fossil site of Payre, consistent with preservation of seasonal cyclicity. The range of isotopic compositions observed in Neanderthal tooth enamel was much smaller (∼3‰), possibly the result of a longer enamel maturation time averaging out variability. An archaeological otolith from a Preceramic site in Northern Peru exhibited marked changes in δ18O over life, due either to the fish occasionally migrating from the sea to a lower salinity habitat, or to short-lived rises in sea water temperature. A fish otolith from Australia's Willandra Lakes World Heritage Area showed clear seasonal variations, but also a general trend towards isotopically heavier and more saline water, as indicated by higher δ18O and Sr/Ca values resulting from increased evaporation. The results of these case studies are compared to results of oxygen isotope analysis using more conventional methods and demonstrate the ability of the SHRIMP II to provide precise high spatial resolution in-situ oxygen isotope analyses of a variety of biogenic materials. This approach has major advantages over conventional methods. It can provide rapid, micro-scale isotopic analyses of sub-permil precision without the need for chemical preparation of the sample. 相似文献
84.
Manuel Vaquero Susana Alonso Sergio García-Catalán Angélica García-Hernández Bruno Gómez de Soler David Rettig María Soto 《Journal of archaeological science》2012
Recent research in Paleolithic archeology has stressed the importance of temporal issues in assemblage interpretation. Archeological assemblages are temporal constructs, formed by the addition of an unknown number of depositional events. This temporal dimension is also evident at the artifactual level, since single artifacts may undergo different events of modification and/or uses over time. The recycling of previously discarded blanks for tool production is one of the best examples of the temporal nature of artifacts. The aim of this paper is to evaluate the importance of recycling in a Late Upper Paleolithic site, examining a type of artifact – burned tools – that has up to now been little used to approach this issue. Our results suggest that recycling was probably a significant component of Upper Paleolithic provisioning behavior, with important implications in site formation processes and the typological variability of assemblages. The expedient or curated character of recycling is also discussed. 相似文献
85.
The intimate politics of secularism and the headscarf: the mall,the neighborhood,and the public square in Istanbul 总被引:1,自引:0,他引:1
The headscarf continues to be a highly charged political issue in Turkey where it is often understood through the prism of the opposition between so-called Islamists versus secularists. My work brings together feminist scholarship on the politics of everyday space and recent rethinking of the categories of secularism and religion. I begin by situating this politicized debate in the everyday material contexts of the public square, the street, and the mall. By introducing popular culture (notably the film Bü?ra) and my own fieldwork on the veil, I argue that the headscarf represents the intersection of politics of place and individual agency in a way that renders ideological debates contingent on everyday practices. Reducing the headscarf to a sign of Islamism fails to take into account the ever-shifting meanings of this object across time and space. The differences within and between the everyday urban sites I examine reveal much more complex, often contradictory, and discontinuous geographies of secularism and Islam. This analysis reveals a multiplicity that belies attempts to delineate clearly bounded spaces, subjects, and ideologies, one that is intimate and political. 相似文献
86.
José Antonio Rodríguez Martín María Del Mar Holgado Molina José Antonio Salinas Fernández 《European Planning Studies》2012,20(6):1059-1074
In this article we calculate an indicator of social and economic development using the DP2 distance method to measure the disparities in Objective-1 regions of southern European countries for 2006. In addition to per capita income, socio-economic components such as health, education, employment, scientific and technological development and infrastructure provision have been incorporated into the index. We examine the issue of whether the Europe Union regions included in the Convergence Objective achieved a lower level of development than the regions no longer covered in this objective for the 2007–2013 programming period by establishing a territorial classification based on the value yielded by the variables of the DP2. Our indicator constitutes a novel contribution insofar as it was constructed using a large number of variables. In essence, we show that not all the regions of the Convergence Objective presented a lower level of economic and social development than those that lost this consideration between 2007 and 2013 and the opposite. 相似文献
87.
88.
貝內迪克特 《Revue de synthèse / Centre international de synthèse》2011,132(1):33-52
At the crossroads of institutions, markets ands discourses, artistic expertise under the reign of Louis XIV has not been thoroughly studied. So-called "experts" belonged to the judiciary field: they were called upon to describe, attribute and evaluate paintings and sculptures in probate inventories or in the context of judiciary actions. Their appointment was a real performative act, since experts were chosen by the judge or the parties, without definite criteria. Therefore, experts were often - but not always - artists, either guild masters or academicians. 相似文献
89.
90.
Pedro Bosch Inmaculada Alemán Carlos Moreno-Castilla Miguel Botella 《Journal of archaeological science》2011
Bones treated at low temperature do not present major modifications although, macroscopically, boiled bones may be distinguished from unboiled ones as they are smoother, lighter and more transparent. Such observations should correspond to textural modifications at a nanometric level and should depend on boiling time. In this study, contemporary human bones, boiled during various time intervals, were characterized using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and nitrogen adsorption (BET). The results were used to estimate the boiling time in four archaeological samples (Neolithic bones from Malalmuerzo cave, Spain). It is concluded, comparing Neolithic bones to contemporary ones and from the textural characterization at a nanometrical level, that two of the archaeological bones were boiled and that they were boiled for less than 6 hours. 相似文献