全文获取类型
收费全文 | 337篇 |
免费 | 17篇 |
出版年
2023年 | 2篇 |
2022年 | 3篇 |
2020年 | 5篇 |
2019年 | 12篇 |
2018年 | 7篇 |
2017年 | 8篇 |
2016年 | 16篇 |
2015年 | 11篇 |
2014年 | 13篇 |
2013年 | 107篇 |
2012年 | 18篇 |
2011年 | 10篇 |
2010年 | 11篇 |
2009年 | 10篇 |
2008年 | 4篇 |
2007年 | 4篇 |
2006年 | 9篇 |
2005年 | 2篇 |
2004年 | 7篇 |
2003年 | 8篇 |
2002年 | 3篇 |
2000年 | 4篇 |
1999年 | 3篇 |
1998年 | 4篇 |
1997年 | 4篇 |
1996年 | 4篇 |
1995年 | 2篇 |
1992年 | 3篇 |
1990年 | 4篇 |
1989年 | 3篇 |
1988年 | 2篇 |
1987年 | 5篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1984年 | 4篇 |
1982年 | 3篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1978年 | 4篇 |
1977年 | 2篇 |
1976年 | 3篇 |
1975年 | 3篇 |
1969年 | 2篇 |
1964年 | 1篇 |
1958年 | 2篇 |
1957年 | 1篇 |
1956年 | 1篇 |
1955年 | 2篇 |
1954年 | 1篇 |
1951年 | 1篇 |
排序方式: 共有354条查询结果,搜索用时 0 毫秒
271.
John M. Steinberg Douglas J. Bolender Brian N. Damiata 《Journal of Field Archaeology》2016,41(4):389-412
An archaeological survey of the Viking Age settlement pattern in the Langholt region of North Iceland suggests that being early in this sequence conferred tremendous advantages to the settlers of this previously uninhabited landscape. Many of the farms established during the settlement of Iceland (which began about a.d. 870) are in use today. However, accessing the Viking Age landscape is difficult. In Langholt the earliest layers of most farmsteads are buried under a thousand years of occupational debris, while the abandoned sites have been covered by extensive soil deposition. Here we report on our coring and test excavation results that outline Viking Age farmstead location, establishment date, and maximum size by the end of the Viking Age. There is a strong correlation between farmstead size and establishment date. This correlation suggests that during the rapid settlement of Iceland, the farmsteads established by earlier settlers were wealthier and that wealth endured. 相似文献
272.
Rachel E. ten Bruggencate Jeffrey P. Stup S. Brooke Milne Douglas R. Stenton Robert W. Park Mostafa Fayek 《Journal of Field Archaeology》2016,41(6):684-698
Southern Baffin Island has been occupied for several millennia, but its enormous size, coupled with scarcity of identified inland archaeological sites that can be confidently linked to coastal occupations, makes modeling ancient seasonal mobility across the region through traditional cost-surface least-cost pathway approaches impractical. We present a method that combines weighted multi-criteria cost surface analysis with a watershed function to create a “mobility-shed” of non-winter travel pathways covering the study area. We evaluate the predictive utility of the resulting pathways for future archaeological survey by assessing their spatial relationships to known archaeological sites. The results of this comparison suggest that elevation and land cover criteria should be augmented with ethnographic and resource availability data to model mobility in this region. 相似文献
273.
Douglas J. Lanska 《Journal of the history of the neurosciences》2016,25(1):23-38
In the late 1870s and 1880s, prior to the development of movie cameras or projectors, English-American photographer Eadweard Muybridge (1830–1904) photographed sequential images of people and animals in motion, using arrays of sequentially triggered single-image cameras. In 1885, Philadelphia neurologist Francis Dercum (1856–1931) collaborated with Muybridge at the University of Pennsylvania to photograph sequential images of patients with various neurological disorders involving abnormal movements, and particularly various gait disorders, including both the sensory ataxic gait of tabes dorsalis and various spastic gaits. Dercum used tracings of sequential photographic images to plot trajectories of limbs as a way to characterize and distinguish pathologic gaits. The Dercum-Muybridge collaboration produced the first motion-picture sequences of neurological gait disorders ever filmed. These sequences and the trajectory-based studies that derived from them were a milestone in studies of pathologic gaits. 相似文献
274.
275.
276.
After 20 years, the Australian American Leadership Dialogue has acquired enviable access to political leaders in the foreign policy establishments of both countries. The influence of the Dialogue is at earlier consensus-building stages of decision making. Its importance has been in ‘relationship maintenance’ of the bilateral alliance which it has pursued through processes of informal diplomacy. The Dialogue now faces its own challenges of organisational renewal and relevance in the wider ‘interpretative community’ of Australian think tanks, university policy institutes and opinion-formers. 相似文献
277.
Douglas L. Allen 《对极》2020,52(6):1563-1582
In this article, I argue that places of respite provide relief from the burdens of oppressive articulations and experiences of society and space and are produced through three general practices: relief as a practice that mitigates psychological and physical burdens of oppression; recuperation as a form of (self-)care that can help heal harms; and affirmative resonance as a practice of counter-storytelling that challenges hegemonic social narratives and internalises affirmative narratives for marginalised peoples. Through a case study with members of the Marching 100 at Florida A&M University (FAMU), I demonstrate how these relational practices produce FAMU as a multiscalar place of respite for black students. Finally, I claim that places of respite, produced through a black sense of place, offer scholars interested in affirmative black geographies an ontological object produced by (and productive of) visions and practices of black life and produced for the celebration and protection of black lives. 相似文献
278.
Cooper Schouten David Lloyd Ida Ansharyani Mimi Salminah Douglas Somerville Kerrie Stimpson 《Geographical Research》2020,58(1):64-76
Honey from the giant Asian honey bee (Apis dorsata) has been harvested by communities throughout Southeast Asia for centuries. In Indonesia, 80 per cent of the national supply of honey comes from Sumbawa; however, there is limited information regarding the sustainability and importance of honey hunting in supporting rural livelihoods. This study used semi‐structured interviews and questionnaires to examine honey hunting and forest honey production in Sumbawa. It evaluates the economic and cultural importance, opportunities, and constraints of honey hunting and prompts us to suggest that income generation from honey plays a critical role in supporting rural communities. Of respondents, 83 per cent reported that income from honey was essential and accounts for 68 per cent of cash income. Yet honey hunters were harvesting using destructive methods under dangerous conditions and are subject to unpredictable market prices and fluctuating yields. Unlike situations in other areas of Indonesia, no system of customary law was found to exist that defines ownership of honey trees and the right to harvest from them. Limited access to market information, high moisture content of honey, and limited training and extension services were identified as key constraints. Future research exploring the sustainability of harvesting practices and mechanisms for improving profitability of honey hunters would be valuable. 相似文献
279.
280.
Douglas A. Sain 《The Journal of Island and Coastal Archaeology》2017,12(4):490-514
Paleoamerican colonization models have emphasized the importance of coastal zones for provisioning hunter gatherers with a diverse range of subsistence resources. This article expands on recent research by Lowery et al. 2012, and presents a model to explain the distribution of Clovis points across the Atlantic slope of Eastern North America. Marine transgression since the last glaciation has submerged large tracts of the Atlantic continental shelf. Global bathymetric data was used to estimate the Clovis age shoreline from Delaware to Florida. Clovis biface data for modern coastal areas, obtained from the Paleoindian database of the Americas, was compared to the slope of the paleo-shoreline to predict coastal zone preference. Results indicate a relationship between point distribution and coastal zone type. Areas where major rivers with high-quality tool-stone intersect broad coastal zones served important roles to Clovis subsistence adaptations. The potential exists for early Paleoamerican sites along the continental shelf submerged beneath 55–75 m of the Atlantic Ocean. Modern coastal regions with high densities of Clovis points may serve as analogues for identifying earlier sites that have been submerged as a result of marine transgression. 相似文献