全文获取类型
收费全文 | 1913篇 |
免费 | 79篇 |
出版年
2023年 | 12篇 |
2020年 | 23篇 |
2019年 | 48篇 |
2018年 | 54篇 |
2017年 | 78篇 |
2016年 | 74篇 |
2015年 | 45篇 |
2014年 | 41篇 |
2013年 | 706篇 |
2012年 | 42篇 |
2011年 | 50篇 |
2010年 | 44篇 |
2009年 | 46篇 |
2008年 | 35篇 |
2007年 | 32篇 |
2006年 | 31篇 |
2005年 | 19篇 |
2004年 | 36篇 |
2003年 | 27篇 |
2002年 | 29篇 |
2001年 | 20篇 |
2000年 | 15篇 |
1999年 | 22篇 |
1998年 | 15篇 |
1997年 | 13篇 |
1996年 | 10篇 |
1995年 | 10篇 |
1994年 | 9篇 |
1993年 | 22篇 |
1992年 | 10篇 |
1991年 | 20篇 |
1990年 | 15篇 |
1989年 | 15篇 |
1988年 | 14篇 |
1987年 | 16篇 |
1986年 | 14篇 |
1985年 | 15篇 |
1984年 | 22篇 |
1983年 | 13篇 |
1982年 | 15篇 |
1981年 | 16篇 |
1980年 | 22篇 |
1979年 | 14篇 |
1978年 | 18篇 |
1977年 | 22篇 |
1976年 | 28篇 |
1975年 | 13篇 |
1973年 | 13篇 |
1972年 | 9篇 |
1971年 | 10篇 |
排序方式: 共有1992条查询结果,搜索用时 15 毫秒
941.
942.
James L. Flexner 《Journal of Archaeological Research》2014,22(1):43-87
The archaeology of colonialism can destabilize orthodox historical narratives because of its critical engagement with multiple lines of evidence, revealing ways that different perspectives can complement or contradict what was assumed to be known about the past. In Oceania, archaeology that blends evidence from landscapes, sites, and artifacts with written documents as well as oral traditions reveals the role of indigenous people in shaping colonial encounters across the region over the last five centuries. The challenge lies with how to interpret this material in terms of ongoing struggles over land, resources, and identity in the region today, encapsulated by the tension between global and local. 相似文献
943.
This article presents the application of fiber-based analysis to predict the nonlinear response of reinforced concrete bridge columns. Specifically considered are predictions of overall force-deformation hysteretic response and strain gradients in plastic hinge regions. This article discusses the relative merits of force-based and displacement-based fiber elements, and proposes a technique for prediction of nonlinear strain distribution based on the modified compression field theory. The models are compared with static and dynamic test data and recommendations are made for fiber-based modeling of RC bridge columns. 相似文献
944.
945.
Hallie Eakin Hugo Perales Kirsten Appendini Stuart Sweeney 《Development and change》2014,45(1):133-155
The last decade of the twentieth century was heralded as the ‘end of agrarian reform’ in Mexico and the initiation of a new era of market‐led agricultural policy and practice. The impact of neoliberalism and the North American Free Trade Agreement on smallholder maize production has been widely conceived as negative, associated with ecological degradation, rural emigration and cultural erosion. Yet, some twenty years later, all evidence suggests that smallholder maize production is continuing in Mexico, albeit in evolving structures and forms. This article uses a farm‐level survey implemented in three Mexican states to assess the current condition of maize farming in Mexico. The authors revisit past categorizations of Mexican farmers and apply similar approaches to explore what maize‐producing households are doing with their maize, and what current patterns of production imply for future Mexican maize policy. They find evidence of greater persistence and adaptability in Mexican maize farming than is often presented. On the basis of their analysis, they advocate for a reconsideration of the underlying assumptions of public policy, highlighting the heterogeneity of the maize landscape and the unrealized and generally unrecognized potential this heterogeneity represents. 相似文献
946.
947.
948.
Lisa-Marie Shillito Ian D. Bull Wendy Matthews Matthew J. Almond James M. Williams Richard P. Evershed 《Journal of archaeological science》2011
Suspected coprolites from midden, burial and room fill contexts at Çatalhöyük were analysed by GC/MS and thin section micromorphology. Assessment of sterol biomarkers enabled a distinction between faecal and non-faecal sources for the deposits to be made, with bile acid biomarkers indicating that many of the faecal deposits are human coprolites. The relative lack of ruminant faeces could be due to this material being used as a fuel source. Deposits in burials were observed to contain soil and plant derived sterols rather than their faecal counterparts. Further analysis in thin section enabled identification of associated materials and contents. Diagnostic inclusions such as bone and plant fragments were only present in some of the human coprolites, which were observed to have a very similar morphology to decayed plant remains. This study illustrates the difficulties in distinguishing coprolites in the field and under the microscope, and demonstrates the importance of integrating biogeochemical methods, particularly when such deposits are used as the basis for interpreting human health and diet, and use-of-space in settlements. 相似文献
949.
In his 1969 Trevelyan Lectures, Franco Venturi argued that Kant's response to the question “What is Enlightenment?” has tended to promote a “philosophical interpretation” of the Enlightenment that leads scholars away from the political questions that were central to its concerns. But while Kant's response is well known, it has been often misunderstood by scholars who see it as offering a definition of an historical period, rather than an attempt at characterizing a process that had a significant implications. This article seeks (1) to clarify, briefly, the particular question that Kant was answering, (2) to examine - using Jürgen Habermas’ work as a case in point - the tension between readings that use Kant's answer as a way of discussing the Enlightenment as a discrete historical period and those readings that see it as offering a broad outline of an “Enlightenment Project” that continues into the present, and (3) to explore how Michel Foucault, in a series of discussions of Kant's response, sketched an approach to Kant's text that offers a way of reframing Venturi's distinction between “philosophical” and “political” interpretations of the Enlightenment. 相似文献
950.
In 2009, the remnants of Her Majesty's Queensland Ship Mosquito, a 2nd‐class torpedo‐boat built in 1883, were relocated. Purchased by the colonial government of Australia in response to heightened tensions between Great Britain and Imperial Russia, Mosquito was assigned to Queensland's capital, Brisbane, where it had a largely uneventful career. Following removal from active duty it was stripped and abandoned on the foreshore of a tributary of the Brisbane River. This paper discusses Mosquito's historical background, and chronicles the rediscovery of the vessel, and the archaeological investigation and identification of its remains. © 2010 The Author 相似文献