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31.
The original fineness of coins is very important information that can help us to understand the commercial situation in a wide historical context. This paper deals with a comparison of analytical methods suitable for the evaluation of the actual and original fineness of coins based on a detailed case study of a medieval coin sample. Both non‐destructive (i.e., scanning electron microscopy/energy‐dispersive X‐ray spectroscopy, X‐ray fluorescence, atomic force microscopy and hydrostatic weighing) and destructive (i.e., inductively coupled plasma – mass spectrometry and the Volhard titration method) techniques were used. The original fineness can be also deduced from knowledge of the internal structure of the coin (limited miscibility of copper and silver). A new analytical method based on a combination of a micrograph of the metallographic cross‐section with consequent image analysis was developed for determination of the original fineness. The proposed approach is relatively simple and provides reliable values. Sample heterogeneity and its impact on the determination of fineness are also discussed.  相似文献   
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In the context of global warming, changes in extreme weather and climate events are expected, particularly those associated with changes in temperature and precipitation regimes and those that will affect coastal areas. The main objectives of this study were to establish the number of extreme events that have occurred in northeastern New Brunswick, Canada in recent history, and to determine whether their occurrence has increased. By using archived regional newspapers and data from three meteorological stations in a national network, the frequency of extreme events in the study area was established for the time period 1950–2012. Of the 282 extreme weather events recorded in the newspaper archives, 70% were also identified in the meteorological time series analysis. The discrepancy might be explained by the synergistic effect of co‐occurring non‐extreme events, and increased vulnerability over time, resulting from more people and infrastructure being located in coastal hazard zones. The Mann Kendall and Pettitt statistical tests were used to identify trends and the presence of break points in the weather data time series. Results indicate a statistically significant increase in average temperatures and in the number of extreme events, such as extreme hot days, as well as an increase in total annual and extreme precipitation. A significant decrease in the number of frost‐free days and extreme cold days was also found, in addition to a decline in the number of dry days.  相似文献   
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This paper re‐analyses a considerable corpus of glass from the Late Bronze Age site of Nuzi, found near Kirkuk in Iraq. SEM–WDS and Sr and Nd isotopic analysis were applied, in addition to cataloguing the glass. The work showed that the glass technology at Nuzi was subtly different from contemporary Egyptian sites, using different ways of opacifying and working glass. At least two, perhaps three, Near Eastern production sites are postulated. The range of glass colours and the skill of their application at Nuzi was perhaps not on a par with the Egyptian sites. This led to a reconsideration and review of the accepted wisdom that the Near East is the source of the innovation that is glass‐making. This opinion is based on limited textual and iconographic sources and is dominated by an erroneous early date for a very developed Nuzi glass industry along with a few finds of glass vessels in early contexts. Some of this evidence has now been at least questioned, suggesting that glass‐making in Egypt, at least as early as the middle of the 15th century bc , and probably earlier, is no later than that in the Near East. It is argued that it is far from clear that the Near East was the source of the innovation and that a more cautious approach would better fit the evidence.  相似文献   
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P. Schmidt  A. Morala 《Archaeometry》2018,60(5):885-897
The earliest evidence of flint and chert heat treatment was found in the ~21.5–17 ka old European Solutrean culture. The appearance of pyrotechnology as part of the production of stone tools has important implications for our understanding of Upper Palaeolithic technological evolution and the specific adaptations during the last glacial maximum in Europe. However, the techniques and procedures used to heat‐treat rocks during the Solutrean remain poorly understood. No direct archaeological evidence has so far been found and the most promising approach is to understand these techniques by determining the parameters with which flint and chert were heated at that time. In this study, we investigate the heating temperature of 44 heat‐treated laurel‐leaf points from Laugerie‐Haute, using a non‐destructive technique based on infrared spectroscopy. Our results document that most of the artefacts were heated to a narrow interval of temperatures between 250 °C and 300 °C. This indicates a standardized technique that allowed to created similar conditions during successive heating cycles. The implications of these results for our understanding of the technical complexity during the Solutrean must be discussed in the light of different heating techniques used at different places and periods.  相似文献   
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The last time texts were brought onto the general theoretical and methodological agenda of the human and social sciences, they were reintroduced into history in terms of an indefinite set of indefinitely complex contexts, which gave every text a specific date and location in a network of other texts and events. A couple of decades later, however, a more prominent feature of texts seems to be that they are permanently on the move: they circulate, have effects on other things, change and transform realities, and are at the same time themselves translated and modified. In the literature exploring the textuality of history, these dimensions have been under‐theorized and often ignored. To meet this challenge, we need to develop concepts and approaches that enable us to place the mobility of texts as well as their mobilizing force at the center of our current historical concerns. In this article we will explore what the consequences of this move could be, and what resources are already at hand in different scholarly traditions. Exploring the entanglements between actor‐network theory (ANT in the version of Bruno Latour), on the one hand, and literary criticism, linguistics, and book history, on the other, enables us to focus on how texts move and how they move others. We will proceed in this essay by identifying three decisive moments in twentieth‐ and twenty‐first‐century textual scholarship, often conceptualized as “turns,” which are linked to the works of three path‐breaking authors and which at the same time represent three different stages or forms of textuality: the linguistic turn (Saussure), the turn to writing (Derrida), and the turn to print (Eisenstein). Our discussions of these three moments and forms of textuality aim at uncovering how they also represent seminal moments in Bruno Latour's development of the theoretical and methodological complex now referred to as ANT.  相似文献   
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My fundamental motivation in writing Images of History was to avoid some forms of hubris and despair that trouble contemporary philosophy and to develop instead a picture of human life in historical time. According to this picture, we live amid institutional and practical inheritances we can address but can never fully stabilize and perfect. In different ways, Kant and Benjamin each accept this thought, and they each develop a picture of philosophy as historically situated, open criticism of existing practices and institutions. Each emphasizes the priority of the practical over any fixed metaphysical‐theoretical stance. I survey each of their general theories of critical historical understanding, and I pay special attention to the texts in which they each provide detailed, specific accounts of Western social‐historical development or circumstances: Kant's Religion within the Boundaries of Mere Reason and Benjamin's One‐Way Street. Where Kant's philosophical criticism is reformist, liberal, and casually dismissive of non‐Christian religion, Benjamin's is modernist, erotic, and improvisatory. Their respective images of history according to which we achieve orientation are both complementary and fundamentally opposed—not readily combinable into a consistent whole. Drawing on the work of Jonathan Lear, I end with a picture of maturity and practical self‐unity as centrally a matter of developing the skill of modulated alternation between these two orientation‐affording images.  相似文献   
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Developers seeking to assemble complementary parcels of land will likely encounter strategic behavior by landowners. Using a property‐level data set from Florida's Department of Transportation covering the period January 2000 to July 2014, I test whether bargaining delays lead to higher final transaction prices. Given the nature of the data, I can compare properties within the same roadway project to estimate the effect of delayed negotiations. My empirical estimates indicate that bargaining delays lead to increased final transaction prices. The magnitude of this effect is approximately 7 percent for the average holdout, however, the effect is nonlinear and diminishes over time.  相似文献   
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ABSTRACT

Geographers interested in how entrepreneurs perceive locational environments have studied their mental maps in several European countries, within the theoretical framework provided by behavioral approach. Such studies have typically employed quantitative techniques, but qualitative studies are relatively new to this line of research. In this article, I examine the mental maps of entrepreneurs in Italy by using a mixture of qualitative and quantitative methods. I present and discuss the qualitative outcomes of this research, focusing in particular on the explanatory location factors and the key influences on the mental maps of entrepreneurs. What emerges is the realization that entrepreneurs are far from being fully rational economic actors, who exploit optimally all information and who are driven only by objective considerations. Rather, their views are also affected by subjective factors, individual’s own insights, commonplaces, stereotypes, and prejudices, particularly with reference to the southern regions of Italy (Mezzogiorno), and of other peripheral areas.  相似文献   
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