全文获取类型
收费全文 | 106篇 |
免费 | 13篇 |
出版年
2023年 | 1篇 |
2021年 | 1篇 |
2020年 | 3篇 |
2019年 | 6篇 |
2018年 | 6篇 |
2017年 | 9篇 |
2016年 | 9篇 |
2015年 | 3篇 |
2014年 | 6篇 |
2013年 | 38篇 |
2011年 | 4篇 |
2010年 | 2篇 |
2009年 | 5篇 |
2008年 | 3篇 |
2007年 | 1篇 |
2006年 | 2篇 |
2005年 | 1篇 |
2004年 | 1篇 |
2003年 | 1篇 |
2002年 | 2篇 |
2001年 | 1篇 |
2000年 | 2篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1995年 | 1篇 |
1987年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1979年 | 1篇 |
1976年 | 2篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1973年 | 1篇 |
排序方式: 共有119条查询结果,搜索用时 15 毫秒
81.
82.
83.
Vote switching in the United States Senate is not an uncommon occurrence. Nearly one in 10 cloture-final passage vote pairs involves senators switching their vote. We find that this inconsistency in voting behavior is a result of the combination of electoral pressures and the impact of the traceability of consequences in light of party forces and personal preferences. In general, we find that electorally vulnerable members of the majority party are more likely to engage in vote switching. The same is true of more electorally secure members of the minority party. However, the traceability of consequences is also a governing force in that electorally vulnerable members of the majority party are more likely to use vote switching as a credit claiming opportunity during periods of low media scrutiny. Electorally vulnerable members of the minority party are more likely to engage in position taking when there is greater media scrutiny. 相似文献
84.
Justin Hopt 《The Journal of Island and Coastal Archaeology》2018,13(1):21-42
Shifts over time in faunal representation in Northwest Coast archaeological sites have been viewed as reflecting changes in economic organization and social complexity. We use fish faunal data from the Parry Lagoon Midden (site DgRv-006) in the Salish Sea region of coastal southwestern British Columbia, Canada, to evaluate the relationship between change in subsistence strategies and community organization. We describe and compare fish assemblages recovered from a shell midden generated by habitation at two sequentially occupied village sites. The lower midden layers include faunal remains derived from the Marpole Period plankhouse village occupation at site DgRv-003 (1500 to 1300 cal BP), while the upper layers were generated during the occupation of a Late Period plankhouse within site DgRv-006 (1000 to 600 cal BP). We compare the two faunal records to ascertain if subsistence re-organization accompanied the social change associated with abandonment and later re-establishment of a village in the Dionisio Point Locality. Results indicate continuity of a diverse fishing economy for the two occupations, and therefore across the Marpole to Late Period transition. This study adds to the recent trend in Northwest Coast archaeology to reconsider the long-standing view that social and subsistence change necessarily occurred in tandem. 相似文献
85.
86.
How urban characteristics change with total population, their scaling behavior, has become an important research field since one needs to better understand the challenges of urban densification. Yet urban scaling research is largely disconnected from intra-urban structure, and this seriously limits its operationalization. In contrast, the monocentric model of Alonso provides a residential choice-based theory to urban density profiles. However, dedicated comparative static analyses do not completely solve how the model scales with population. This article bridges this gap by simultaneously introducing power laws for land, income and transport cost in the Alonso model. We show that the equilibrium urban structure of this augmented model matches recent empirical findings about the scaling of European population density profiles and satisfactorily represents European cities. This result is however not compatible with the observed scaling power of housing land profiles, and challenges current empirical understanding of wage and transport cost elasticities with population. Our results call for revisiting theories about land development and housing processes as well as the empirics of agglomeration benefits and transport costs. 相似文献
87.
88.
Elizabeth S. Greene Justin Leidwanger Numan Tuna 《International Journal of Nautical Archaeology》2019,48(1):103-122
Between 2011 and 2015 archaeological fieldwork was conducted in the Archaic through Late Antique harbours associated with Burgaz on the Datça Peninsula in south‐west Turkey. This work focused on survey and documentation of built features associated with the four harbours, limited stratigraphic excavation, and identification of shipwrecks and seafaring activity outside the harbours. The results offer new insights into the growth, expansion, and eventual abandonment of the port complex, its development alongside the urban settlement, and its changing maritime dynamics in light of economic shifts across the peninsula and the eastern Mediterranean. 相似文献
89.
90.
Excavation of archaic Morgantina (c.700–450 BC), Sicily, has brought to light a significant pattern in the distribution of imported Greek pottery. This pattern, which shows a preference for imports with features that referred to metal vessels, is echoed at sites around the western Mediterranean. We argue that the preference for certain types was communicated back to Greek producers, and that it also reflects the particular local interests of non‐Greeks, who associated metallic features not only with wealth, but also with their own ancestral traditions. 相似文献