全文获取类型
收费全文 | 445篇 |
免费 | 19篇 |
出版年
2023年 | 5篇 |
2020年 | 9篇 |
2019年 | 16篇 |
2018年 | 18篇 |
2017年 | 28篇 |
2016年 | 22篇 |
2015年 | 12篇 |
2014年 | 17篇 |
2013年 | 122篇 |
2012年 | 17篇 |
2011年 | 8篇 |
2010年 | 15篇 |
2009年 | 20篇 |
2008年 | 10篇 |
2007年 | 11篇 |
2006年 | 7篇 |
2005年 | 8篇 |
2004年 | 5篇 |
2003年 | 8篇 |
2002年 | 11篇 |
2001年 | 6篇 |
2000年 | 7篇 |
1999年 | 6篇 |
1998年 | 9篇 |
1996年 | 4篇 |
1995年 | 3篇 |
1994年 | 3篇 |
1992年 | 3篇 |
1991年 | 5篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 3篇 |
1987年 | 1篇 |
1985年 | 3篇 |
1984年 | 4篇 |
1983年 | 1篇 |
1982年 | 6篇 |
1981年 | 3篇 |
1980年 | 2篇 |
1978年 | 1篇 |
1977年 | 2篇 |
1976年 | 3篇 |
1975年 | 1篇 |
1974年 | 3篇 |
1973年 | 2篇 |
1972年 | 2篇 |
1971年 | 2篇 |
1969年 | 1篇 |
1968年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有464条查询结果,搜索用时 0 毫秒
461.
462.
Brandi Lee MacDonald R.G.V. Hancock Aubrey Cannon Alice Pidruczny 《Journal of archaeological science》2011,38(12):3620-3630
The use of ochre and its presence in archaeological contexts is well documented archaeologically, ethnographically and historically. Elemental analysis of ochre is becoming increasingly common as a method for identifying ancient quarrying and mining practices, and for identifying patterns of resource use, trade and exchange. As this type of work has become more common it has become apparent that two critical issues need to be considered: (1) the need for systematic identification of trends and patterns in ochre geochemistry using appropriate statistical analyses, and, (2) consideration of geographic and geologic scale in relation to ochre chemistry. Because ochre is a heterogeneous material relative to other raw material types, it is necessary to apply multivariate and discriminant statistics to differentiate geochemical groups within a sample set. However, caution must be taken when interpreting statistical results at face value. Local geologic and geomorphologic conditions play a significant role in ochre chemistry and need to be taken into account when interpreting analytical results. The purpose of this project was to determine if geochemically distinct groups of ochre could be distinguished through neutron activation analysis (NAA) of archaeological and geological ochres from the central coast of British Columbia, Canada. The results show that it is possible to satisfy the provenance postulate and to differentiate chemical groups through elemental characterization and using multivariate statistical methods. 相似文献
463.
464.
Woo Chang Kang 《Australian journal of political science》2020,55(3):257-275
ABSTRACT How does local economic inequality affect the native-immigrant gap in immigration attitudes? Existing studies do not distinguish between native and immigrant citizens, which is problematic because immigrants represent an increasing share of the population and voting public. Immigrant citizens, as legal residents, receive the same legal and social protections as native citizens. However, as an out-group, they are less likely to be attached to the national and cultural identity of a host country. This paper uses the Australian Election Study to show that immigrant citizens prioritise cultural or psychological considerations in forming immigration attitudes. As local economic inequality rises, immigrant citizens’ support for immigration strengthens regardless of their country of origin, reason for migration and length of stay in Australia. 相似文献