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991.
Robert J. C. Mowat 《International Journal of Nautical Archaeology》2020,49(1):222-223
992.
993.
The social safety net in the United States consists of a variety of programs administered by both federal and state governments. Although the populations served by social programs such as Medicaid and consumer bankruptcy likely overlap, policymakers tend to look at individual programs unilaterally and often fail to communicate appropriately with legislators and political leaders at differing levels of government. The result of such an incremental approach to policy reform is a fragmented social safety net system in the United States. In this study, the relationship between two social programs belonging to the larger social safety net is examined, and recommendations for policymakers are offered. 相似文献
994.
Feasts provide a public forum where social statuses can be affirmed or challenged among pre-state societies. Documenting feasting behavior thus provides insight into the construction of prehistoric political power. This paper presents expected material patterns of feasting by focusing on intra-site variability in food preparation, presentation, and consumption. Expectations are evaluated by comparing ceramic, ground stone, obsidian, and faunal data recovered from Conchas phase (900–800 BCE) elite and village midden deposits at Cuauhtémoc in the Soconusco region of southern Mexico. I argue that elite feasting at Cuauhtémoc created political cohesion between elite and non-elite segments of society during the Conchas phase as a new polity emerged that was more socially stratified and politically hierarchical than anything previously known in the region. 相似文献
995.
Jennifer A. Leonard Orin Shanks Michael Hofreiter Eva Kreuz Larry Hodges Walt Ream Robert K. Wayne Robert C. Fleischer 《Journal of archaeological science》2007
Molecular archaeology brings the tools of molecular biology to bear on fundamental questions in archaeology, anthropology, evolution, and ecology. Ancient DNA research is becoming widespread as evolutionary biologists and archaeologists discover the power of the polymerase chain reaction (PCR) to amplify DNA from ancient plant and animal remains. However, the extraordinary susceptibility of PCR to contamination by extraneous DNA is not widely appreciated. We report the independent observation of DNA from domestic animals in PCR reagents and ancient samples in four separate laboratories. Since PCR conditions used in ancient DNA analyses are extremely sensitive, very low concentrations of contaminating DNA can cause false positives. Previously unidentified animal DNA in reagents can confound ancient DNA research on certain domestic animals, especially cows, pigs, and chickens. 相似文献
996.
Sulphur isotopes in archaeological bone collagen are not routinely analysed in palaeodietary studies. Here we investigate the potential contribution that sulphur isotope analysis can provide toward the study of ancient human diet and economy, with particular emphasis on the distinction between freshwater and terrestrial consumers. For material from the Late Bronze Age site of Chicha in the south-western Eurasian forest-steppe, sulphur isotopes effectively separate freshwater and terrestrial animal food resources. The sulphur isotope data coupled with nitrogen isotope values from Chicha reflect a dietary reliance upon freshwater animal protein (fish) for the Late Bronze Age inhabitants. In contrast, sulphur isotope values for freshwater and terrestrial potential food species from the Eneolithic site of Bil'shivtsi in western Ukraine were indistinguishable, demonstrating that δ34S values cannot always be relied upon to identify freshwater and terrestrial consumers. The data from this study support the adoption of δ34S analysis as a standard component of palaeodietary studies; apart from its potential to distinguish freshwater from terrestrial consumers, it can provide supplementary dietary information not evident from the carbon and nitrogen isotope data. In addition, certain indices are considered that may be used to assess the validity of sulphur isotope data, as currently exist for carbon and nitrogen. According to the analysis of modern collagen samples, N:S appears to be a broad indicator of collagen sulphur isotope quality. However, more work needs to be done to establish an effective means by which highly-altered sulphur isotope values can be identified and thereby removed from consideration. 相似文献
997.
The value of strontium isotope analysis in identifying immigrants at numerous archaeological sites and regional areas has been demonstrated by several researchers, usually by comparing 87Sr/86Sr values of human tooth enamel and/or bone with the local strontium isotope signature determined by faunal and environmental samples. This paper examines the feasibility of using 87Sr/86Sr ratios to investigate residential mobility in the Nile Valley region, specifically at the New Kingdom period (∼1050–1400 BC) archaeological site of Tombos (ancient Nubia). Archaeological and textual information regarding this period indicates that immigrant Egyptians and local native Nubians were likely interacting at this site during a period of Egyptian colonial occupation. The results of this study suggest that non-local individuals may be distinguished from locals using 87Sr/86Sr values and that colonial agents in the Tombos population were probably both local native Nubians and immigrants. 相似文献
998.
999.
Robert I. Rotberg 《The Journal of imperial and commonwealth history》2019,47(1):76-99
David Livingstone’s Second Expedition to Africa (1858 to 1863) began with lavish promises and expectations and ended ignominiously, with official Britons castigating the once greatly esteemed explorer of Africa. To what extent did Charles Livingstone, an ordained Congregational minister and David’s American-trained younger brother, help to diminish the Expedition’s successes? Were David Livingstone’s promising exploring and scientific efforts compromised by his seemingly troubled, racist, brother? American-trained and an ordained minister, with a supposed ‘ascendancy’ over his elder brother, how did Charles’ prejudices and actions undermine his brother’s leadership and the accomplishments of the Zambezi project? 相似文献
1000.