全文获取类型
收费全文 | 1583篇 |
免费 | 107篇 |
出版年
2024年 | 8篇 |
2023年 | 33篇 |
2022年 | 8篇 |
2021年 | 8篇 |
2020年 | 71篇 |
2019年 | 49篇 |
2018年 | 133篇 |
2017年 | 126篇 |
2016年 | 112篇 |
2015年 | 78篇 |
2014年 | 65篇 |
2013年 | 388篇 |
2012年 | 68篇 |
2011年 | 62篇 |
2010年 | 45篇 |
2009年 | 40篇 |
2008年 | 38篇 |
2007年 | 26篇 |
2006年 | 31篇 |
2005年 | 18篇 |
2004年 | 18篇 |
2003年 | 16篇 |
2002年 | 25篇 |
2001年 | 16篇 |
2000年 | 10篇 |
1999年 | 12篇 |
1998年 | 19篇 |
1997年 | 10篇 |
1996年 | 8篇 |
1995年 | 11篇 |
1994年 | 10篇 |
1993年 | 13篇 |
1992年 | 10篇 |
1991年 | 11篇 |
1990年 | 8篇 |
1989年 | 10篇 |
1988年 | 8篇 |
1987年 | 7篇 |
1986年 | 11篇 |
1985年 | 6篇 |
1982年 | 3篇 |
1981年 | 4篇 |
1979年 | 3篇 |
1978年 | 4篇 |
1972年 | 2篇 |
1971年 | 2篇 |
1969年 | 3篇 |
1967年 | 2篇 |
1959年 | 2篇 |
1950年 | 3篇 |
排序方式: 共有1690条查询结果,搜索用时 15 毫秒
31.
32.
33.
34.
35.
36.
37.
Improvements in Archaeomagnetic Dating in Western Europe from the Late Bronze to the Late Iron Ages: An Alternative to the Problem of the Hallstattian Radiocarbon Plateau
下载免费PDF全文
![点击此处可从《Archaeometry》网站下载免费的PDF全文](/ch/ext_images/free.gif)
We present a new curve of the directional secular variation of the geomagnetic field in Western Europe between 1500 bce and 200 ce . Its computation relies on a Bayesian framework. The fast secular variation during the Late Bronze and Early Iron Ages makes archaeomagnetic dating efficient with a respective precision of 150–200 and 60–100 years during these periods. The Bayesian method also provides posterior date distributions that refine the dating of reference data, especially during the period of the Hallstattian radiocarbon plateau. Archaeomagnetism becomes a valuable alternative to radiocarbon and will help to improve the archaeological chronologies. 相似文献
38.
Joan Pau Jordà Jose Ameijeiras-Alonso Joana Maria Pujadas-Mora 《Historical methods》2018,51(3):190-201
It has been amply demonstrated that individuals' reproductive capability is the key explanatory phenomenon for understanding onomastic disappearance during the early modern period. This article analyzes the evolution and consequences of surname extinction in a specific population: Catalonia in the sixteenth and seventeenth centuries. In this article two aspects are examined. First, the observed disappearance of surnames is estimated through historical data collected in the Llibres d'Esposalles (Marriage Books) from 1481 to 1600 at Barcelona Cathedral. Second, the estimated natural extinction of those surnames registered in 1481 is forecast by applying a statistical branching process. 相似文献
39.
Rafael M. Martínez Sánchez Juan Carlos Vera Rodríguez Leonor Peña-Chocarro Youssef Bokbot Guillem Pérez Jordà Salvador Pardo-Gordó 《African Archaeological Review》2018,35(3):417-442
The period comprising the end of the Early Neolithic and the Middle Neolithic, dated broadly within the fifth millennium cal BC, corresponds to an interval that remains largely unknown in the extreme north-western tip of Africa. This situation contrasts with that of the Early Neolithic, a period characterised by the earliest evidence of the diffusion of a productive economy, cultivated plants and domestic animals. The paucity of data for these later phases can be explained in part by the lack of secure contexts and sequences based on radiocarbon datings of short-lived samples. The current study presents the results of the excavations of El-Khil Caves B and C that yield materials allowing re-evaluation of the chronology of a type of ceramic known as Ashakar ware. The study also identifies two traditions in the northern Moroccan Middle Neolithic. The first is heir to the so-called Impressa Mediterranean ware and rooted in the Cardial Neolithic, while the second is characterised by roulette cord impressions, red slip and tunnel lugs and probably rooted in the region of the Sahara, and has no technological precedents in the study area. 相似文献
40.