全文获取类型
收费全文 | 2206篇 |
免费 | 46篇 |
专业分类
2252篇 |
出版年
2024年 | 3篇 |
2023年 | 14篇 |
2021年 | 7篇 |
2020年 | 20篇 |
2019年 | 39篇 |
2018年 | 306篇 |
2017年 | 234篇 |
2016年 | 287篇 |
2015年 | 40篇 |
2014年 | 31篇 |
2013年 | 216篇 |
2012年 | 64篇 |
2011年 | 189篇 |
2010年 | 206篇 |
2009年 | 71篇 |
2008年 | 89篇 |
2007年 | 95篇 |
2006年 | 22篇 |
2005年 | 44篇 |
2004年 | 27篇 |
2003年 | 17篇 |
2002年 | 13篇 |
2001年 | 16篇 |
2000年 | 8篇 |
1999年 | 10篇 |
1998年 | 16篇 |
1997年 | 7篇 |
1996年 | 5篇 |
1995年 | 5篇 |
1994年 | 8篇 |
1993年 | 14篇 |
1992年 | 17篇 |
1991年 | 4篇 |
1988年 | 4篇 |
1987年 | 3篇 |
1986年 | 8篇 |
1985年 | 8篇 |
1984年 | 5篇 |
1983年 | 13篇 |
1982年 | 3篇 |
1981年 | 7篇 |
1980年 | 3篇 |
1979年 | 8篇 |
1978年 | 3篇 |
1977年 | 7篇 |
1976年 | 6篇 |
1972年 | 8篇 |
1971年 | 4篇 |
1969年 | 4篇 |
1968年 | 3篇 |
排序方式: 共有2252条查询结果,搜索用时 0 毫秒
121.
122.
123.
Andrew Fitzpatrick 《考古杂志》2016,173(2):361-362
124.
Evangelos Tsakalos Constantin Athanassas Polychronis Tsipas Maria Triantaphyllou Maria Geraga George Papatheodorou Eleni Filippaki John Christodoulakis Maria Kazantzaki 《Archaeological and Anthropological Sciences》2018,10(1):41-60
Quaternary stratigraphy and sea level changes have been extensively investigated in many areas of the Mediterranean. However, numerical dating of coastal deposits and the associated paleoenvironmental information are limited for the coasts of Cyprus, principally based on radiometric and radiation-exposure geochronological techniques on fossils which bear a range of limitations and uncertainties. As such, optically stimulated luminescence (OSL) dating techniques are deemed to be the most suitable in direct dating of the coastal sediments of Cyprus. In the southeastern Cyprus, coastal dunes (aeolianites) now forming elongated ridges appear as morphological features running parallel to the current shoreline presenting an indicator of sea level and climate changes of great paleoenvironmental significance. We present our first chronological results for the exposed aeolianites and underlying littoral deposits formed along the southeastern coastal Cyprus ranging from 78.4 ± 9.9 to 56.2 ± 7.4 ka. The post-infrared–infrared stimulated luminescence (pIR-IRSL) revealed that dune formation took place during the marine isotope stages (MISs) 3, 4, and possibly 5a. Late Holocene reworking is proposed for a distinctively isolated dune with an age of ~1.3 ka ago. This study also showed that pIR-IRSL dating of feldspars may be a reliable alternative to quartz OSL dating when the quartz luminescence characteristics are unsuitable. 相似文献
125.
126.
127.
128.
Andrew Wright Hurley 《澳大利亚历史研究》2019,50(2):155-170
Scholars considering the acoustics of exploration have focused on how explorers heard Australian space in terms of silence, to argue this silenced Indigenous presence, or that stillness, was incongruous with how a place to be colonised should sound. I focus on the acoustically attuned Ludwig Leichhardt, a science-poet indebted to the Enlightenment, but also engaged with the German Romantic legacy. The manifold acoustic dimensions of expeditioning – including music – were important to him in different ways. The acoustic world could be assayed and harnessed in ways that were often consistent with colonialism. But there was also something fugitive about acoustics. They could mark a site for emotional engagement with place, and sometimes embryonic cross-cultural dialogue. Yet the possibilities were not always heard and, in line with Romanticism, the acoustic could drag down expeditioners’ spirits just as it could buoy them up. It could baffle or be a site for Indigenous resistance. 相似文献
129.
130.
Bryn Letham Andrew Martindale Kisha Supernant Thomas J. Brown Jerome S. Cybulski Kenneth M. Ames 《The Journal of Island and Coastal Archaeology》2019,14(2):163-197
Methodological advancements in geoarchaeology and spatial and chronological modeling are opening new avenues to interpreting large coastal shell-bearing sites. We document the developmental histories of two such sites around Prince Rupert Harbour, Canada, using systematic percussion coring, intensive radiocarbon dating, and 3D surface mapping with Total Station and LiDAR. We also re-analyze a third site (Boardwalk/GbTo-31) excavated and radiocarbon dated in the 1960s, 1970s, and early 2000s using archival field notes, site maps, and stratigraphic profiles georectified using LiDAR. We map the natural landform beneath the sites and document the degree to which people physically modified landforms through the deposition of massive shell accumulations. We model site development through time and space and use accumulation rates and OxCal modeling to test for intentional deposition events. All three sites demonstrate complex and heterogeneous occupation histories. At each we identify instances of very rapid deposition that effectively terraced and extended parts of the natural landform to create places for constructing houses, though these episodes take place within longer histories of slower quotidian deposition. The anthropogenic modifications to the coastline in this area are the result of these mixed processes associated with long histories of occupation. 相似文献