首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1067篇
  免费   59篇
  2023年   14篇
  2022年   17篇
  2021年   15篇
  2020年   47篇
  2019年   42篇
  2018年   58篇
  2017年   60篇
  2016年   63篇
  2015年   35篇
  2014年   42篇
  2013年   146篇
  2012年   44篇
  2011年   58篇
  2010年   43篇
  2009年   57篇
  2008年   47篇
  2007年   65篇
  2006年   42篇
  2005年   45篇
  2004年   34篇
  2003年   35篇
  2002年   26篇
  2001年   22篇
  2000年   17篇
  1999年   8篇
  1998年   11篇
  1997年   11篇
  1996年   5篇
  1995年   5篇
  1994年   2篇
  1993年   3篇
  1992年   2篇
  1991年   1篇
  1989年   1篇
  1984年   1篇
  1982年   1篇
  1980年   1篇
排序方式: 共有1126条查询结果,搜索用时 15 毫秒
961.
Although the collection of new data and the development of an enduring interest in theoretical concerns characterize much current work in Roman archaeology, the field continues to experience, tension between traditional classical archaeological approaches and practices borrowed from other branches of archaeology. This tension is most clearly visible with the integration of textual and archaeological data. How the dynamic between these provenances plays out in Roman archaeology can be seen in theoretical and methodological applications, the use of field survey, and the adoption of an Annaliste perspective by some Roman archaeologists. Text and archaeology are crucial contributors to the the study of early Rome and its origins, investigations in the capital for all periods, the study of Pompeii, and attempts to illuminate the chief characteristics of the Roman economy. Many advances in Roman archaeology have occurred largely as a result of a conscious attempt on the part of Roman archaeologists to properly contextualize textual data in light of the archaeological data, thereby providing a better balance between the two sets of information and liberating archeeology from being the “handmaid of history.”  相似文献   
962.
Using ceramic data, we explore how a multiscalar approach, framed within Giddens' Theory of Structuration, can lead to a more complete understanding of the construction of New World Creole identities. The two scales of analysis serve to inform one another. We draw upon archaeological and historical data from five plantation sites located on three islands of the Bahamas. On the macroscale level, we demonstrate how regional trade networks limited or facilitated access to ceramics and shaped the ways that individual planters used these goods to construct statements about wealth and prestige. A microscale analysis of ceramics recovered from six slave households demonstrates how families with complete market access used ceramics as a means of creating a sense of community identity and mediating tensions within the quarters.  相似文献   
963.
This paper offers a reinterpretation of what critical theorist Moishe Postone calls 'the fundamental core of capitalism'. In so doing, it seeks to lay a set of theoretical foundations for a renewed Marxian political economy in geography, at a time when Marxism has been eclipsed as a leading critical paradigm within the discipline. The argument works on two fronts simultaneously. On the one hand, the ongoing hegemony of economic and political neo-conservatism is occluding the violent realities of a capitalist world economy behind the anodyne logics of free-market theory. These realities suggest the continued relevance of, and need for, a strong Marxian critique of political economy. But on the other hand, Marxism has been reprimanded by its erstwhile allies on the Left of geography for being too 'modern' and too capital- and class-centred. In light of this double challenge, the paper seeks to develop a 'both/and' Marxism for geography that can chart a third way between the antinomies of modern and after-modern modes of theorizing capitalism and class. A project of 'envisioning capitalism' is suggested on this basis, which combines the 'power' of modern theory with the epistemological reflexivity of after-modern theory. At the same time, capitalism and class are rethought at an ontological level and shown still to be essential features of the fin-de-millennium world, but far less closed and hegemonic than is suggested by modern modes of Marxism. Finally, a return to a class politics of redistribution is suggested, but in a way that draws in more recent Left geographical concerns with identity, difference and recognition.  相似文献   
964.
This paper reviews the accomplishments of British, South African, and American women Africanist archaeologists who worked between the 1860s and the 1960s. Despite their many significant contributions to African archaeological method and theory, especially those exposing the importance of indigenous populations to their own cultural development, the work of these women tends to be either appropriated or ignored by their contemporaries and by present day archaeologists. A postcolonial feminist analysis draws on the colonial context in which African archaeology developed and the continued Western domination of the discipline to provide a background for understanding how and why these women are omitted from historiographies of African archaeology.Cette étude revise les accomplissements des femmes archéologues Africanistes anglaises, sudafricaines et Americaines, qui travaillaient entre les années 1860 et les années 1960. Malgré leurs plusieurs contributions d'importance à la méthode et la théorie de l'archéologie Africaine, en particulier celles qui exposaient l'importance à leur propre développement culturel des populations indigènes, leurs travaux tendent à être ou appropriés ou ignorés par leurs contemporains ou par les archaéologues d'aujourd'hui. Une analyse féministe post-coloniale utilise le contexte colonial dans lequel l'archéologie Africaine s'est développée, et la domination occidentale soutenue de cette discipline, à fournir une base pour comprendre comment et pourquoi ces femmes ont éeté omises des historiographies de l'archéologie Africaine.  相似文献   
965.
Increasingly, non-human geographies have unfastened nature from its foundational moorings. In a parallel development, the benefits of adhering to precautionary and participatory forms of decision-making have become common place in environmental geography and in government policy. And yet, on closer inspection, there is a danger in these latter approaches that old certainties regarding non-human natures remain unquestioned. The result can be a tendency to gravitate towards bureaucratic and technical solutions to, or closures on, what are, first and foremost, political and open-ended problems. This paper uses an empirical engagement with BSE-related scientific and policy practices, along with insights from non-human geographies, science studies and poststructuralism to suggest that such certainties and resolutions are misplaced.  相似文献   
966.
江苏省粮食产量吸引子维数研究   总被引:4,自引:0,他引:4  
以混沌理论为基础,对江苏省粮食单产时间序列用分形的方法进行了初步研究,从吸引子维数、Kolomogorov熵等方面分析了粮食单产变化的混沌性质。研究结果表明,江苏省1978-1997年粮食单产的时序分布具有分形特征,且单产的变化是一个确定性的低维混沌吸引子。要恰当地描述江苏省粮食单产发生系统,需要构造包含12个状态变量的动力学系统。  相似文献   
967.
In the new Russia where one lives plays an important part in influencing life chances, and consequently in shaping opinions regarding the changes since the collapse of the Soviet system in 1991. This study of the social geography of central Moscow is based on surveys of sample populations undertaken in 1993 and 1997. Post-Soviet central Moscow has undergone substantial change in population, social class structure and economic function during the transition from socialism to a market economy. Tens of thousands of central city residents have been relocated in the wake of re-development in the central city and there is evidence of growing social stratification as the inherent high value of central city space is reflected in the post-Soviet market place. Quality of life indicators suggest that there remains a wide gap between expectations raised by the advent of democracy and the market economy and the reality of daily life and labour for central city residents.  相似文献   
968.
Current images portray childhood as primarily a time of play and learning, de-emphasizing children's economic contributions and relegating them, like women, to the less-visible realm of the home. Ethnographic and historic literature amply demonstrates that age categories are constructs and, thus, exhibit considerable temporal and cross-cultural variability. Nevertheless, archaeologists have tended to ignore prehistoric children, perhaps viewing them as only peripheral to central research concerns, or to treat them stereotypically. The archaeological record provides opportunities for the exploration of numerous aspects of childhood and archaeologists are encouraged to respond to the challenge.  相似文献   
969.
This article argues that the agency of commoners has not been adequately theorized in archaeological studies of the political dynamics of complex societies. Recent developments in social theory emphasize that political relations are produced through social negotiations involving commoners as well as elites. This paper considers the role of commoners in the Classic period collapse in the lower Río Verde Valley, Oaxaca, Mexico. Regional survey and excavation data demonstrate that the Classic-to-Postclassic transition was marked by dramatic changes in settlement patterns and sociopolitical organization, including the decline of the Late Classic regional center of Río Viejo. The research indicates that rather than passively reacting to the sociopolitical developments of the Classic-to-Postclassic transition, commoners actively rejected many of the ruling institutions and symbols that were central to the dominant ideology of the Late Classic state. Early Postclassic people reused and reinterpreted the sacred spaces and objects of the Río Viejo state such as carved stone monuments and public buildings. The evidence from the lower Verde is examined in the context of an emerging theoretical perspective in archaeology that considers commoner power. We argue that commoners contribute to the social negotiation of dominant discourses through three overlapping forms of social interaction: engagement, avoidance, and resistance.  相似文献   
970.
P. Alt-Epping  L. Smith 《Geofluids》2001,1(3):163-181
A method of calculating chemical water/rock ratios is presented that enables the estimation of fluid velocities in open, flow‐through hydrologic systems. The approach is based on relating the gain/loss of a chemical species per kilogram of solid phase to the loss/gain of that species in the fluid phase, integrated across a specified length of the flowpath. After examining the underlying approximations of the approach using a one‐dimensional model of seawater moving through a basalt under nonisothermal conditions, the method is applied to representative zones within a two‐dimensional hydrothermal convective system. The method requires that regions within the flow system can be identified in which the direction of flow is steady for an extended period of time. Estimates of fluid velocity are spatial and temporal averages for the length of the flowpath used in the calculation. The location within the flow system and the nature of the alteration reactions determine which species can provide reliable values of the chemical water/rock ratio and useful estimates of fluid velocities. Over the length of the flowpath considered, the calculation of water/rock ratios works best when a species is controlled by a single reaction. Accurate estimates are favoured if the concentration profile of a species along the flowpath increases or decreases monotonically. If the length of the flowpath extends over more than one reaction zone, then erroneous estimates of the water/rock ratio and fluid velocity are more likely. Model calculations suggest that the quartz/silica system should provide reliable estimates for fluid velocity under a wide range of temperature and flow conditions, in particular in those regions of a system at or near quartz equilibrium, so that the aqueous silica concentration is buffered by quartz and correlated with the temperature distribution.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号