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   205篇
  免费   16篇
  2024年   1篇
  2023年   4篇
  2022年   3篇
  2021年   6篇
  2020年   5篇
  2019年   11篇
  2018年   17篇
  2017年   18篇
  2016年   8篇
  2015年   6篇
  2014年   8篇
  2013年   51篇
  2012年   11篇
  2011年   13篇
  2010年   8篇
  2009年   10篇
  2008年   7篇
  2007年   10篇
  2006年   6篇
  2005年   4篇
  2004年   1篇
  2003年   4篇
  2002年   3篇
  1998年   1篇
  1996年   1篇
  1993年   1篇
  1985年   1篇
  1983年   1篇
  1978年   1篇
排序方式: 共有221条查询结果,搜索用时 15 毫秒
91.
The Cape Stoba shipwreck is located on the seabed off the island of Mljet in Croatia at a depth of 21–28 m. Following initial investigation in 1975, four seasons of excavation have been carried between 2010 and 2014 by the Department for Underwater Archaeology of the Croatian Conservation Institute, joined by the Department of Studi Umanistici of the Università Ca' Foscari of Venice from 2012. The wreck‐site is evidenced by a cargo of nine amphora types dated to the 10th‐11th century AD, produced in the Eastern Mediterranean and Black Sea area, and glassware of Levantine production. The only direct evidence of the ship itself to date, is one iron anchor.  相似文献   
92.
This paper examines cooperation patterns of firms in the German low-technology region of Lower Bavaria. Particular emphasis is placed on the interplay among the spatial scale of cooperation, the form of cooperation and the type of innovation. Generic results show that overall, firms with a spatially more diverse set of cooperation linkages have a higher likelihood of innovating. However, the innovation outcomes differ depending on the spatial scale of cooperation. While cooperation with regional partners positively correlates with low-threshold innovations, cooperation with spatially distant partners positively correlates with product innovations. Surprisingly, it is application-oriented cooperation that channels the relation in both cases. The findings support the view that innovation of firms in low-technology regions is driven by ‘development’ rather than ‘research’. It also suggests that innovation-driven growth may even be possible in regions with limited values on the traditional innovation-supporting factors.  相似文献   
93.
ABSTRACT

This paper engages with repeated calls within archaeology for a re-envisioning of the excavation report, contextualized by the transformation of scholarly communication taking place across the humanities and social sciences. This widespread transformation is rooted in a growing interest in showing data together with synthesis and argument, the importance afforded to public engagement, and the proliferation of digital platforms that enable creative presentations of scholarly work. In this context, we discuss our experience producing an excavation report that attempts to integrate several forms of scholarly and public-facing communication on a digital platform, and aims to engage audiences at multiple levels, while simultaneously facilitating data reuse and laying out the authors’ current interpretations. We consider the benefits and challenges of producing work in this way through the example of producing the Gabii Project’s first volume, A Mid-Republican House from Gabii, developed through a collaboration between the Gabii Project team and the University of Michigan Press. This experience is contextualized within the broader discourse surrounding changing expectations about open access, authorship and credit, and sustainability of digital scholarship in academic publishing.  相似文献   
94.
Remarkably little is known about the earliest surviving separate-sheet medieval map of Britain that takes its name from its former owner, Richard Gough (1735–1809), and that has been variously dated to between 1300 and 1400, and later. It presents a sophisticated cartographical image at a time when detailed maps of individual regions were almost unknown in Europe, yet nothing is agreed about its possible origins, context (ecclesiastical or secular), or why and how it was compiled. In the belief that historical interpretation has to stem from an intimate knowledge of the map as artefact—the state of the parchment, nature of the inks, palaeography—as well as image, an informal study group of historians and scientists (the Gough Map Panel) was convened in 2012 to examine the map through high resolution digital reproduction, hyperspectral analysis, three-dimensional analysis and Raman pigment analysis. Although the study is still ongoing, much that is new has been discovered, notably about the way features were marked on the map, Gough’s application to the map of a damaging reagent to render place-names readable, and the extent to which the original map (now dated to c.1400), although never completed, was nonetheless reworked on two different occasions in the fifteenth century, effectively creating two further maps. These and other findings are summarized here to encourage the further study of the map’s features that is needed before it can be fully understood.  相似文献   
95.
Al‐Ghazzālī criticized Muslim philosophers in general and Ibn Sīnā in particular in a number of matters notwithstanding, he was deeply influenced by philosophy and Ibn Sīnā's views as to some issues. Of the contexts in which al‐Ghazzālī is under the clear influence of Ibn Sīnā are the interpretations of some Qur'ānīc chapters and verses which are related to the demonstration of the existence of God and the explanation of some divine attributes and names. In many of his works, al‐Ghazzālī reproduces Ibn Sīnā's interpretation of the verses in harmony with the ontological proof. One can observe Ibn Sīnā's influence on al‐Ghazzālī in relation with the hierarchy of beings, too. However, the context in which Ibn Sīnā's influence is most obvious is the interpretation of the 35th verse of the Sūrah Nūr. Ibn Sīnā's interpretation of the terms occurring in this verse as symbols of the human faculties exercised a profound impact on the thought of al‐Ghazzālī, which manifests itself in his interpretation of the verse in Mishkāt al‐Anwār. Another of such contexts is the topic of human psychology and the interpretations of the verses related wherewith. Immensely influenced by the psychological views of Ibn Sīnā, al‐Ghazzālī adopted Ibn Sīnā's notion of the simultaneous creation of soul and body, interpreting some Qur'ānic verses in harmony with this notion. This article is intended to illustrate that al‐Ghazzālī, who is opposed to the blind imitation of any school of thought, did not make a wholesale denouncement of the views of philosophers; on the contrary, he made an extensive use of Ibn Sīnā's ideas in conformity with his general attitude of benefiting from all schools of thought.  相似文献   
96.
This paper discusses the results of the analysis of a female skull from a collective burial dated to the Ancient Bronze Age in Italy (Ballabio, LC). A virtual restoration and 3D reconstruction was also produced from the digitalized skull to complete the damaged parts and to recreate the facial appearance of this young adult female from the Bronze Age. The skull shows clear evidence of post-mortem modifications, as some series of scraping marks on the external cranial vault cross the parietal bones longitudinally. The contemporaneous presence of taphonomic linear marks on the skull and periostitis on the frontal bone, as well as the provenance of the specimen from a secondary burial (a typical funerary habit documented in Italy during the Copper Age and Ancient Bronze Age), makes it difficult to interpret the case (scalping, surgery, or ritual practice linked to secondary burial). The advanced methods used to analyse the skull surface allowed us to discriminate intentional marks from modifications due to other taphonomic processes and to determine the timing of their formation (peri- or post-mortem). The possibility that the scraping marks are related to a ritual practice, conducted during the individual's life (with specific symbolic or social value) or after death or at the moment of secondary burial, is discussed.  相似文献   
97.
A senior American specialist on the geography of China examines several aspects of China's society, economy, regional organization, and geopolitical position in light of the change in the country's leadership at the 18th National Congress of the Chinese Communist Party in November 2012. After a brief comparison of the incoming and retiring leadership groups in terms of backgrounds and past policy pronouncements (as well as discussing the challenge posed by corruption), the author proceeds to discuss a series of key social and regional development policies that may be subject to some degree of change under the new leadership, including hukou and the one-child policy. He then focuses on the 12th Five-Year Plan, which provides a broad outline of the new leadership's goals, and particularly its emphasis on balanced regional development (a commitment to further develop the interior of the country as well as to revitalize the old heavy industrial region, the Northeast). The author then turns to China's growing military (and particularly naval) power in connection with its increasing assertion of territorial claims in the South and East China Seas as well as ability to project naval power across the Taiwan Strait and beyond into the Pacific and Indian Ocean theaters.  相似文献   
98.
In two-dimensional and single axis three-dimensional finite element analyses, the ground motion incidence angle can play a significant role in structural response. The effect of incidence angle for three-dimensional excitation and response is investigated in this paper for response of highway bridges. Single-degree-of-freedom elastic and inelastic mean spectra were computed from various orientation techniques and found indistinguishable for combinations of orthogonal horizontal components. Probabilistic seismic demand models were generated for the nonlinear response of five different bridge models. The negligible effect of incidence angle on mean ensemble response was confirmed with a stochastic representation of the ground motions.  相似文献   
99.
Scholars have identified a hiatus in the archaeological record of Lower Nubia that spans approximately 1000 years. This interval may represent a desertion of Lower Nubia by its inhabitants. Evidence of occupation did not reappear in the area until the Meroitic time period. However, the identity of the returning people has been the subject of speculation. In order to determine who the Meroites of Lower Nubia were, 20 cranial non‐metric traits were observed on six Nubian groups, representing five time periods. Two groups date to time periods immediately before (Kerma) and immediately after (X‐Group) the Meroitic period. Three additional Nubian groups (two Christian samples from different sites and Sesebi, a contemporary sample) were utilised as outgroups to elucidate a clearer picture of the relationship among the six samples. Mahalanobis D2 with a tetrachoric matrix was employed for calculating biological distances among the groups. Principal coordinates analysis produced two clusters of Nubians, where the Meroitics clustered with other Nubian groups. Specific distance scores indicate the Meroites were biologically similar to individuals from the time periods prior to and after their arrival in Lower Nubia. The Meroites therefore appear to be a Nubian group returning to Lower Nubia after its desertion. Copyright © 2009 John Wiley & Sons, Ltd.  相似文献   
100.
Exploration of the Medici Chapels in the Basilica of San Lorenzo in Florence revealed the burials of nine juvenile members of the Medici family (16th–17th centuries). The estimated children's skeletal ages ranged from newborns to 5‐year‐olds, showing a series of bone abnormalities, in particular diffuse periosteal new bone and bowing of long bones. The comparable pathological lesions, including porosity evident on the skull, orbital roofs, costocondral ribs and growth plates between metaphyses and epiphyses, enlargement of metaphyses and sternal rib ends, and long bone bending, are interpreted as the skeletal manifestation of rickets. The diagnosis of a metabolic disease linked to vitamin D deficiency would appear to be unexpected for children brought up at the court of a Renaissance elite class family like the Medici of Florence. Analysis of the historical and social background is particularly helpful to understand the causes of the onset of the disease in this aristocratic group. Documentary sources, supported by 13C and 15N bone collagen analysis, attest that weaning of these children took place when they were around 2 years old. With a prolonged breast‐feeding and a delay in introducing solid food in the diet, vitamin D deficiency is expected to rise considerably, in particular if the other main risk factor, namely inadequate sunlight exposition, is associated with this human milk‐based diet. Copyright © 2013 John Wiley & Sons, Ltd.  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