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471.
The replication method proposed in this article is based on an analysis of 12 complete and eight incomplete predynastic flint knives. From this a specific replication target was deduced, consisting of geometrical parameters as well as quality standards for practical execution. The given replication technique, verified in more than 50 full replication experiments, utilizes only common tools and all its elements remain within the frame of today's recognized flintknapping practice. What leads to the desired result is the right combination, the high precision and the extreme regularity of a great amount of simple but delicate steps.The Gerzean manufacturing sequence, as resulting from this study, consists of six basic stages and employs such different technologies as percussion, grinding, large pressure flaking and micro-flaking. It is suggested that various kinds of people with separate skills were involved and that a very strong cultural pressure must have secured the extreme regularity of the final product quality.In a special section of this paper, the perfection and the failures of the Gerzean craftsmen are described. It seems that not only did they make few mistakes, but they also had an outstanding repertoire for correction of them.At the same time this paper presents in detail the developed research method itself, so that it may serve as a model for analogous cases in the future. The essential points are the definition of a replication target, the division of the replication problem into separate tasks and the simultaneous start of the study and the practical replication experiments. The benefit of this last point is a rapid feed back which greatly improves the quality and efficiency of the research on the originals itself.  相似文献   
472.
    
The Yuan Qinghua porcelain produced in the city of Jingdezhen, in China, mainly includes the gaudy blue type, a blue–grey or grey‐coloured type and the type featuring a blue colour with a slight amount of grey. For a long time, only the gaudy blue type was focused on and discussed, while the other two types, which contain equally important information with regard to recovering the manufacturing technology of Yuan Qinghua, were always ignored by scientific researchers. In this paper, by using micro X‐ray fluorescence spectroscopy (μ‐XRF), spectrophotometry and optical microscopy, all three different types of Yuan Qinghua porcelain are analysed systemically and, based on the analyses of the body, the glaze and the blue decoration, the differences in the materials and the manufacturing technologies of the three different types are discussed. This not only provides a good basis for the reconstruction of the whole picture of the manufacturing process of Yuan Qinghua porcelains in Jingdezhen, but also contributes to database‐building for the identification of Qinghua porcelain.  相似文献   
473.
Prehistoric reduction sequences of proboscidean ivory have been described and discussed within the Russian and European Upper Paleolithic archaeological literature. A culturally modified proboscidean tusk (Mammuthus sp.) in Seward Peninsula, northwestern Alaska, displays longitudinal grooving, providing an insight into a reduction technique rarely described within North American archaeological literature. Similar reduction sequences have been described for the production of bone, antler and walrus ivory artifacts in the North American prehistoric record; however, examples on proboscidean ivory are extremely rare.  相似文献   
474.
Vertebrate remains from two stratified sites, the Quebrada Jaguay site (QJ-280) and the Ring Site, reveal details about economic strategies practiced between 13,145 and 7500 cal yr BP on the southern coast of Perú. The near absence of terrestrial resources, a broad continuity in economic activities focused on marine resources, and flexibility within the overall strategy, are among the most interesting aspects of these data. Although they reflect economic and social decisions driven, in part, by fluctuations in environmental conditions, they demonstrate that people were sophisticated strategists actively responding to dynamic environmental conditions.  相似文献   
475.
    
This work proposes a multi‐analytical approach to determine the additives in historical mortars, the use of which is widely described in bibliographical sources, but has rarely been reported in the literature. A protocol to thoroughly analyse mortars was created (optical microscopy, X‐ray diffraction, infrared spectroscopy, thermal analyses and gas chromatography – mass spectrometry). These techniques, which had already been carried out on samples from various sites from the Roman to the modern era, determined that additives had only been used in the mortars from the internal masonry at our sampling site: the medieval military shipyard of Amalfi (Italy). The investigations yielded information on the production technology, and FT–IR and GC–MS revealed a saccharide material‐based additive in the mortars, of plant origin. The FT–IR spectra suggested the presence of a natural gum, which has been used since ancient times to strengthen the cohesion properties of mortars and their resistance to tensile stress.  相似文献   
476.
    
The Two Cultures debate of the early 1960s was initiated by C. P. Snow and by F. R. Leavis. Snow's understanding of the nature of science was fashionable but defective, while Leavis's views were those of a literary coterie, quaint and lacking the universality he wished to claim. Between them, as a result, they created an ill-conceived dichotomy, leading to a nugatory debate. Snow's profound lack of understanding of the nature of science and technology was in line with views popular in his time, but was all too likely to be seriously damaging to those whom he wished to champion.  相似文献   
477.
    
Recent syntheses for the Long Island Sound region argue for long-term cultural continuity amongst Holocene coastal hunter-gatherers. These notions derive primarily from studies of quartz lithic assemblages, which archaeologists argue show structural stasis over time. The remaining variability is explained with a ‘distance to source' model in which near-coastal sites tend to show a lack of quartz conservation while interior sites show quartz recycling. Under this model, technological strategies traditionally associated with raw material conservation (e.g., bipolar reduction) should not occur at near-coastal sites. We test the ‘distance to source’ model by reexamining a quartz lithic assemblage from Eagle's Nest-Long Island's richest Holocene coastal hunter-gatherer site. We find conclusive evidence for bipolar reduction in the site's “block/shatter” materials. Toolmakers used bipolar reduction to conserve raw material. Toolmakers also used anvils and bipolar reduction to open quartz cobbles, to stabilize freehand cores, to efficiently access cutting edges, and possibly to create crushed coarse quartz temper for pottery production. Our results point to previously unrecognized aspects of behavioral variability in the Eagle's Nest lithic assemblage and to possible revision of the ‘distance to source’ model. Similar variability may be present at other North American sites with quartz “block/shatter” material.  相似文献   
478.
    
This article provides a summary and analysis of current knowledge of the archaeological remains of the 64 sewn boats that have been excavated in the Mediterranean region, dating from the Bronze Age to the Medieval periods. A detailed examination of the construction techniques, particularly the methods used to assemble and seal sewn planks and the systems used for lashing frames to the planking, has enabled six distinct construction traditions to be distinguished within the sewn‐boat assemblage. Phases within these traditions are examined, alongside transitions to mortise‐and‐tenon fasteners, and explanations for the longevity of sewn techniques in specific regions are suggested.  相似文献   
479.
ABSTRACT

A popular trend is for US colleges to organise short-term, self-funded trips for students to volunteer for several weeks in poverty-stricken communities in the global South. To explore the cultural implications of short-term, international volunteer projects, I undertake an ethnographic study of college students of who travel to a small village in Cameroon to improve the quality of drinking water and community health. I examine whether the volunteer tourism can serve as a unique opportunity to see beyond the African stereotypes to recognise the historical and structural context in which Africa continues to suffer. Although a trip such as this can be a disruptive event for students to critically evaluate the global privileges of Westerners, students tend to experience Cameroon through the lens of popular stereotypes about Africa and Western paternalism. The encounters with Africans in the absence of sufficient education about postcolonial Africa can affirm the stereotypes and cultural superiority formed in USA because students negotiate their actual experience in ways to confirm their perception of Africa. Therefore, seminars and workshops about the fundamental aspects about global inequality can help educate volunteers about the postcolonial context of foreign aid of Western countries for the Third World, and White privilege.  相似文献   
480.
    
In this paper we use the case of Nepal to advance political geographic analyses of how, during moments of rupture, territory act as an important political technology in state restructuring, and how urban demarcation along with other territorial structures of the state will play a significant role in this process. Nepal has experienced more than three decades of state-restructuring characterized by consecutive political and constitutional crises, including close to ten years of violent conflict. Within the brief period between 2014 and 2017, more than 230 new municipalities were demarcated on top of the existing 58. In our analysis we unpack why and how the number of municipalities is quadrupled at that particular moment of time and how this is shaped by and have implications for re-configurations of Nepal's territorial structures. This is achieved through a historical analysis of how the state's politico-administrative system has been mapped, reasoned and challenged. The analysis is based on official documents, such as census data and reports, legislative acts, public debates and academic analyses of processes of administrative and political reforms and conflicts in Nepal since the early 1990s. It therefore engages with a rich literature on conflict, the post-conflict situation and the restructuring of the state. Based on our findings we argue that urban demarcation is an important part of a states' political technology complex, and warn against trends in studies of urbanization to question the analytical bearing of differentiating the rural and urban. Showing that Nepal's recent urban boundaries have been justified by the need to achieve a better geographical balance, we conclude by arguing for the need for studies of urban transformations that critically examine whether and how the new territorial structures in their implementation contribute to balance geographical and social inequalities.  相似文献   
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