全文获取类型
收费全文 | 667篇 |
免费 | 27篇 |
专业分类
694篇 |
出版年
2024年 | 2篇 |
2023年 | 12篇 |
2022年 | 4篇 |
2021年 | 2篇 |
2020年 | 29篇 |
2019年 | 27篇 |
2018年 | 58篇 |
2017年 | 65篇 |
2016年 | 38篇 |
2015年 | 37篇 |
2014年 | 40篇 |
2013年 | 141篇 |
2012年 | 34篇 |
2011年 | 34篇 |
2010年 | 22篇 |
2009年 | 23篇 |
2008年 | 17篇 |
2007年 | 14篇 |
2006年 | 12篇 |
2005年 | 10篇 |
2004年 | 11篇 |
2003年 | 9篇 |
2002年 | 4篇 |
2001年 | 1篇 |
2000年 | 5篇 |
1999年 | 5篇 |
1998年 | 3篇 |
1997年 | 6篇 |
1996年 | 3篇 |
1994年 | 3篇 |
1993年 | 4篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1987年 | 3篇 |
1986年 | 1篇 |
1983年 | 1篇 |
1982年 | 2篇 |
1981年 | 3篇 |
1980年 | 1篇 |
1971年 | 1篇 |
1970年 | 1篇 |
排序方式: 共有694条查询结果,搜索用时 0 毫秒
101.
102.
Marco Nebbia Anna Leone Ralf Bockmann Mftah Hddad Hafed Abdouli Ahmed M. Masoud Nader M. Elkendi Hassan M. Hamoud Salah S. Adam Moncif N. Khatab 《Journal of Archaeological Method and Theory》2016,23(4):971-988
The paper discusses the potential of a collaborative scheme for the development of a protocol for recording and managing the cultural heritage in Libya. The critical political situation in the country urges the development of cultural heritage management policies in order to protect it more thoroughly and consistently. Moving on from the numerous international initiatives and projects dealing with a mostly “remote” approach to the issue, the project here presented to engages with staff members of the Department of Antiquities (DoA) in the development of a joint strategy for the application of remote sensing and geographical information systems (GIS) to the preservation and monitoring of Libyan cultural heritage. A series of training courses resulted in an initial development of new ways of recording and analysing field data for a better awareness of the full range of threats that the archaeology of the country is subject to. Focussing on the case of the Jebel Nafusa, the training involved the assessment of site visibility on satellite imagery, the analysis of high-resolution satellite datasets for archaeological mapping, the creation of a GIS spatial database of field data, and the mapping of risks and threats to archaeology from remote sensing data. This led to the creation of of a risk map showing the areas that are affected by a number of threats, thus giving the DoA a tool to prioritise future fieldwork to keep the assessment of site damage up to date. Only a collaborative approach can lead to a sustainable strategy for the protection of the invaluable cultural heritage of Libya. 相似文献
103.
Anna Bocking-Welch 《European Review of History》2016,23(1-2):154-170
AbstractYouth have been a malleable resource in the fight against hunger, variously conceived as volunteers, political activists, global citizens and financial donors. This article uncovers competing (and sometimes complementary) visions for the participation of British youth in Youth Against Hunger, part of the United Nations Freedom from Hunger Campaign. In doing so, it makes two key contributions to the field. First, by uncovering the professionals and commentators who sought to involve adolescents in humanitarian activity, it accounts for the agency of a more diverse range of non-state participants and experts than are usually included in histories of humanitarianism. Second, in highlighting the pragmatic difficulties in aligning humanitarian and youth-work contexts, it illustrates how domestic concerns about British youth actively shaped the development of the humanitarian sector in this period. 相似文献
104.
105.
Anna Matveeva 《International affairs》1999,75(1):23-44
This article examines the concepts of democracy and legitimacy in the context of post-Soviet Central Asia. Its first argument is that democratization projects have lived through hard times in five Central Asian countries despite the failure of the institutional expression of democracy to incorporate the values and structures of these societies. The Soviet legacy of cynicism combined with local conservative political culture obstructs the emergence of democratic values and processes crucial for successful institutional development. If democracy does not provide a basis for political legitimacy, should the conclusion be that the ruling regimes are illegitimate? The article’s second argument is that the current sources of legitimacy stem from the fact that the regimes managed to cope with the initial challenges of post-communist transition with relative success and laid the foundation of the new states. Moreover, the populations do not see viable alternatives to the present order. However, there are new problems, such as mounting social tensions, regionalization and criminalization of politics. These challenges are largely a by-product of developments in the post-independence era. The continuing legitimacy of the regimes will depend on their ability to cope with these new, highly problematic issues. 相似文献
106.
Maria Ostendorf Smith 《International Journal of Osteoarchaeology》2002,12(4):235-247
There are few described cases of metastatic carcinoma from the prehistoric eastern United States and none primarily differentially diagnosed from the southeast. A mature adult female exhibiting several large lytic cranial lesions suggestive of neoplastic disease was identified in a late prehistoric Mississippian Period (AD 1200–1600) context. Burial 371 is from Ledford Island, a Mouse Creek phase (AD 1400–1500) site from the Chickamauga Reservoir of southeastern Tennessee. It is the only case in this reservoir (total adult n = 843). The radiographs of the otherwise asymptomatic postcranium yielded radiolucencies in both proximal femora, both medial clavicles, the sternum, the surviving humeral metaphysis and fragmentary innominate. The locations are all consistent with metastasized carcinoma. The identity of the possible primary lesion is argumentative. Age, sex and the mixed nature of the osseous response are consistent with carcinoma of the breast but not to the exclusion of bronchogenic, thyroid, or kidney cancers. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献
107.
George Papatheodorou Maria Geraga George Ferentinos 《International Journal of Nautical Archaeology》2005,34(1):95-109
An integrated remote-sensing survey was carried out in Navarino Bay, where in 1827 a battle was fought between the allied British, French and Russian navies and the Turkish-Egyptian fleet. Integration and interpretation of the remote-sensing data has shown the presence of shipwreck remains on the sea-floor and possible shipwrecks buried under the sea-bed. It has also shown that the historical remains are under threat from the heavy anchors of tankers which sink into the sea-bed and, when dragged, dig furrows, thus disintegrating the shipwreck remains. To protect the sites the construction of permanent anchoring systems away from the shipwreck remains is recommended.
© 2005 The Nautical Archaeology Society 相似文献
© 2005 The Nautical Archaeology Society 相似文献
108.
109.
Paola Villa Maria Fernanda Sánchez Goñi Gloria Cuenca Bescós Rainer Grün Aurelie Ajas Juan Carlos García Pimienta Wendy Lees 《Journal of archaeological science》2010
Data of high resolution for reconstructions of archaeological site formation processes can be obtained only by the use of precise excavation methods and comprehensive recovery techniques using fine-mesh water screening, followed by meticulous sorting and quantitative studies of all the small organic components from the screens. These methods are generally used at human occupation sites, but are not often employed at paleontological or mixed human-carnivore sites. At the site of Bois Roche, an Upper Pleistocene hyena den, we have used these meticulous recovery techniques in combination with absolute dating, geoarchaeological observations, taphonomic analyses, studies of microvertebrates and pollen analysis. Correlation of the site environmental data from pollen and microvertebrate assemblages with the vegetation record of a deep-sea core taken in the Bay of Biscay have allowed us to constrain the ages provided by ESR dating of bovid teeth and to reconstruct the physical environment of the site with a degree of confidence rarely achieved by the use of fossil remains from archaeological sites alone. 相似文献
110.
Anna Sandak Jakub Sandak Magdalena Zborowska Włodzimierz Prądzyński 《Journal of archaeological science》2010
Archaeological wood, as most of natural materials, is slowly decomposing on the archaeological site due to various biological factors. Rapid and accurate estimation of the degradation level is extremely important for optimal restoration and conservation. The goal of this research was to verify the effectiveness of Fourier transform near infrared (FT-NIR) spectroscopy for archaeometry. The important advantage of the NIR spectroscopy is its accuracy, simplicity and ability to perform very high number of tests without needs of any destruction to the workpiece. Five oak pieces of the archaeological wood collected from waterlogged sites in Poland have been used. Cellulose and lignin contents, as well as crystallinity and the degree of polymerization were measured with standard reference methods and compared to the contemporary wood. The near infrared spectra represent all the physical/chemical changes of the wood due to waterlogging. This technique was successfully validated in rapid estimation of the cellulose and lignin contents. The method explored in this research might be a novel tool assisting experts in evaluation of the degradation state of archaeological and historical wooden materials. 相似文献