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   220篇
  免费   20篇
  2024年   1篇
  2023年   10篇
  2022年   1篇
  2021年   3篇
  2020年   8篇
  2019年   12篇
  2018年   31篇
  2017年   24篇
  2016年   25篇
  2015年   16篇
  2014年   12篇
  2013年   49篇
  2012年   5篇
  2011年   11篇
  2010年   7篇
  2009年   5篇
  2008年   2篇
  2007年   3篇
  2006年   1篇
  2005年   1篇
  2004年   1篇
  2003年   1篇
  2002年   1篇
  2001年   1篇
  1998年   1篇
  1997年   1篇
  1996年   3篇
  1995年   1篇
  1992年   1篇
  1989年   2篇
排序方式: 共有240条查询结果,搜索用时 62 毫秒
101.
European Union (EU) funds flowing into budgets of public sector organizations of its member states should be additional to their nationally funded expenditures. To investigate this additionality principle systematically, we develop a new empirical method. Our main hypothesis is that some of the EU-funded projects are crowding out national public expenditures. Not being able to reject the hypothesis would be consistent with violating the additionality principle. To test the hypothesis, we examine how EU funding translates into actual spending of relatively comparable municipalities of the Czech Republic. We innovatively match the municipal authorities’ budgetary data on EU-funded expenditure projects with their other, nationally funded, expenditures. We find no systemic crowding out of national public expenditures by EU funds at the level of operational programmes in the Czech municipalities’ data, which is consistent with no evidence of violating the additionality principle. Nonetheless, going down to the municipal level enables us to show how the results can pinpoint individual cases of EU fund’s potential mismanagement in Czech municipalities. Overall, we provide the first evaluation of the additionality principle at the level of individual recipients of EU funds and in doing so we develop a methodological approach potentially applicable to other fund recipients.  相似文献   
102.
This article deals with the myriad determinants involved in pottery distribution in northeast Ghana, considered from a theoretical perspective that integrates the materiality of vessels and the social, political and historical context where both communities and pottery operate in their daily practice. Hence, we develop a comprehensive research strategy that combines emic and etic views covering the multiple dimensions of pottery life history. In this sense, production units, technical traditions and the characteristics of the redistributive centres, as well as the strategies for pottery acquisition, are studied. Special attention is paid to quite varied aspects such as the physical properties of vessels and their performance characteristics, the reputation of both vessels and potters according to the consumers and the mobility and connectivity patterns found in the study area. On the other hand, interpretations regarding the historical and sociopolitical context of the region are emphasised, as well as the interethnic relationships amongst groups inhabiting the area.  相似文献   
103.
New excavations at Border Cave use high-resolution techniques, including FT-IR, for sediment samples and thin sections of micromorphology blocks from stratigraphy. These show that sediments have different moisture regimes, both spatially and chronologically. The site preserves desiccated grass bedding in multiple layers and they, along with seeds, rhizomes, and charcoal, provide a profile of palaeo-vegetation through time. A bushveld vegetation community is implied before 100,000 years ago. The density of lithics varies considerably through time, with high frequencies occurring before 100,000 years ago where a putative MSA 1/Pietersburg Industry was recovered. The highest percentage frequencies of blades and blade fragments were found here. In Members 1 BS and 1 WA, called Early Later Stone Age by Beaumont, we recovered large flakes from multifacial cores. Local rhyolite was the most common rock used for making stone tools, but siliceous minerals were popular in the upper members.  相似文献   
104.
Viscardo’s Letter to the Spanish Americans inaugurates a tradition of nonconformist political writing against Spanish colonial rule during the second half of the eighteenth century, a period characterized by the Crown’s attempt to reorganize several aspects of the colonial administration. As an ex-Jesuit living in exile after the expulsion of the Society of Jesus from all Spanish territories in 1767, Viscardo had a political as much as a personal motive in designing a project that would cut the colonial ties between Spain and the New World. His plans for emancipation included the instauration of a monarchical form of government, but his design was out of touch with reality and would have hardly been taken seriously by the inhabitants had a British-backed expeditionary force reached the coasts of Chile and Peru, as he had planned. While Viscardo’s Letter may have stirred a sense of creole patriotism some years after his death, the political scruples of the ancien regime based on social privileges and racial distinctions were too strong to be dismantled by mere ideals of freedom, justice and equality. Thus, effective political participation was restricted to the creole elite, whom Viscardo saw as the legitimate guarantor of social order and economic prosperity.  相似文献   
105.
106.
In this paper, we propose the application—for the first time in the Mediterranean area—of the combination of the study of chemical residues in floors and ceramics, with the aim of providing information about the activities carried out in archeological buildings. We chose the Garum Shop at Pompeii to test the method. In fact, due to the peculiarity of this archeological context, it provided an ideal case in which the activities performed are in part known, and the ceramic vessels recovered are still in situ. Floor samples were studied by means of spot tests developed in Mexico aimed at identifying the presence of phosphates, fatty acids, and protein residues, while the organic residues preserved in the ceramic matrix of amphorae, dolia, and other ceramic vessels were studied by gas chromatography coupled with mass spectrometry. Moreover, we integrated the data obtained with specific studies directed at better identifying the solid residues found inside two of the amphorae studied: botanical studies of fruit stones recovered in a Dressel 20 amphora and the characterization of the lime preserved in an African amphora. The research allowed for the identification of the traces of some of the activities performed, such as cooking and producing garum in the floors of the building, and the use and re-use of amphorae and dolia before the Vesuvian eruption.  相似文献   
107.
Taphonomic studies of faunal assemblages from archaeological and palaeontological sites need biostratinomy research to endorse their results. Many papers have studied the relationship between the differential conservation of anatomical parts and the animal responsible for the deposits. In this paper, we present the biostratinomy results from 18 Cervus elaphus hispanicus carcasses (Hilzheimer 1909) in a Mediterranean ecosystem (the Sierra Norte Mountains in Seville Natural Park). We also describe the skeleton decay related to scavenger community, where Sus scrofa (Linnaeus, 1758) is maybe the most important bone scavenger in our study area. These results of this research were compared to those obtained from a similar study carried out in Doñana National Park (Huelva) and confirmed that post-mortem tendencies are similar in both ecosystems.  相似文献   
108.
Chert from the limestones and marly limestones of Castelltallat Formation (Ebro Basin) was widely used throughout prehistoric times in north-eastern Iberia to produce stone tools due to its properties and accessibility. A rough estimate indicates that this rock—either as raw material or as lithic products—was distributed mainly to the north of the outcrops, over an area of 6000–8000 km2. However, other rocks in the area have similar characteristics which can lead to confusion in the interpretation of its prehistoric use and distribution. In order to establish useful archaeometric criteria for differentiating this chert from other similar, the Castelltallat chert is characterised in petrographic, mineralogical and geochemical terms. The chert nodules are found to be homogenous at the macroscopic and microscopic level, with a significant presence of bioclasts, thus indicating they might be formed in a freshwater lake environment by the early diagenetic replacement of carbonates in shallow waters. The mineralogical composition is homogeneously uniform and of a flint type, characterised by an almost exclusive predominance of quartz, without any opaline phases, and a variable proportion of moganite. The iron oxide content is very low, whereas its chemical composition is unusually high in uranium which correlates positively with carbonate content and negatively with silica. Archaeometrical parameters are provided to reach a proper identification of tools knapped with this chert. This way, chert from Castelltallat Formation turns out to be a valuable lithological marker to evaluate the range of mobility of the human groups who lived in the north-eastern Iberia and their contacts with neighbouring areas.  相似文献   
109.
One hundred and eleven samples from the important Servilia Roman tomb have been analysed for the first time by Raman spectroscopy, resulting in a complete characterisation of the pigment palette used for its remarkable wall paintings: 73 different pigment mixtures have been identified for the composition of its 11 colours and their tonalities. Dyer’s weld, an ancient organic yellow pigment, which was described by Vitruvius, has been identified and characterised for the first time in Roman wall paintings. Distinctive Raman spectroscopic signals which differentiate between haematite and caput mortuum (a violet colour from haematite which has been subjected to thermal treatment) are also reported. The use of the very expensive lazurite for a balance relates the importance of this otherwise ordinary instrument with psychostasia (the human soul weighing process) and is not found elsewhere in the tomb. The distribution of white minerals alone or in admixture is not related to any particular colouring pigment or figure; this possibly indicates that there was no specific use for each white mineral and that several craftsmen worked on the paintings, perhaps in different periods, or that the frescoes have been subjected to unrecorded restoration. We conclude that Raman spectroscopy is a valuable analytical technique for the unambiguous identification of mixtures of both organic and inorganic compounds, to study the degree of mineral crystallinity and for identifying treatment. These data are relevant for the holistic interpretation of the artwork in its historical, economical and social context.  相似文献   
110.
Both Agustín de Foxá and Víctor Ruiz Iriarte premiered their first plays very near the end of the Spanish Civil War in 1939. The two playwrights appear to belong to the same imaginative and poetical vein, but in fact Foxá yearns for an impossible return to an idealized past, in a pessimistic lamentation against Modernity—that is, precisely, his exotic drama Cui-Ping-Sing. The poetical theatre Ruiz Iriarte endorses in Un día en la Gloria, and thinks apt to Modern times, is based in a radical optimism—the idea that fantasy can always transform and improve a disappointing reality.  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