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   198篇
  免费   5篇
  2023年   3篇
  2022年   4篇
  2021年   1篇
  2020年   7篇
  2019年   9篇
  2018年   18篇
  2017年   21篇
  2016年   17篇
  2015年   9篇
  2014年   6篇
  2013年   69篇
  2011年   5篇
  2010年   3篇
  2009年   4篇
  2008年   6篇
  2007年   3篇
  2005年   3篇
  2004年   2篇
  2003年   1篇
  2002年   3篇
  2001年   2篇
  1999年   2篇
  1998年   1篇
  1997年   1篇
  1996年   1篇
  1991年   1篇
  1976年   1篇
排序方式: 共有203条查询结果,搜索用时 15 毫秒
161.
This article examines the prevalence of parenthood among professionally practising artists in Sweden. The overall aim of the article is to employ feministic and sociological perspectives to provide a theoretically-based understanding of the problems of balancing work and family life in the arts. Data are presented that reveals that female artists are more frequently childless compared to their male counterparts and women in the overall population. Male artists, however, are less frequently childless than men in general. The article develops a theoretical explanation focused on the effect of economic resource structures, which leave women artists to cope with lower incomes with which to pursue careers in the arts, and symbolic structures, which present creative work as difficult to combine with everyday domestic work. Given that motherhood continues to be associated with more comprehensive caring responsibilities than fatherhood, women are more frequently confronted with a choice between starting a family and pursuing their artistic calling.  相似文献   
162.
163.
Already in classical antiquity people dealt with the principle of formation, developing different theories. Researchers in the renaissance, working in the conflict zone between tradition and experience, tried to prove one or the other of these theories by the means of new observations, especially of chicken development. Aldrovandi was the first to see the real principle of formation of the hen's egg, i. e. the blastodisc, but he didn't recognize the importance of his discovery due to his close adherence to Aristotle in the theoretical field. Fabricius even thought that traditional knowledge was of more importance than his own excellent observations. Parisano was the first to succeed in making a correct interpretation of the function of the blastodisc, but only by holding to a ‘false’ classical theory. Harvey combined his attempt to restore the developmental theory of Aristotle with a religious interpretation postulating God's intervention in all development. Subsequent to atomism, Highmore evolved a two seed theory of development, which in his view made a permanent engagement of God superfluous. Also the first observations using the microscope did not contribute to any improvement in developmental theory. Malpighi used them to confirm the theory of epigenesis, whereas Croone attributed to a piece of blastoderm the proportion of a whole embryo to demonstrate his ovistic theory of preformation. The founder of animalculism Leeuwenhoek, an amateur researcher, was at first not influenced by the trends of the scientific community. He postulated that the spermatozoa, which he discovered, contained perfect miniature animals. His investigations are a good example of where prejudices can lead, even when the observations are excellent. In the 17th century the tension between experience and tradition shifted in favour of experience, but a final solution had not by any means been reached.  相似文献   
164.
An adequate supply of highly qualified workers is a central prerequisite for the ability of peripheral and economically lagging regions to develop. In order to take advantage of endogenous potential, bottlenecks in human knowledge and know-how must be overcome by means of support from outside. An important element in this is migration. Taking as an example the Weser-Ems region in northwestern Germany, the strategies used by local enterprises to motivate managerial staff to move from other regions are shown and the level of success achieved is described. As is shown, the regional labour market has lost significance for the upper segment in the course of structural changes in the economy, which has led to an increase in the necessity for cross-regional searches in order to fill managerial posts. As enterprises in peripheral locations have poor starting conditions in the cross-regional competition for highly qualified workers, this development demands that more and more enterprises mobilize considerable resources for the recruitment of staff. Although the findings indicate that the potential of workers willing to migrate is greater and more diverse than is often assumed, they also show that certain types of enterprises have great difficulty in overcoming independently the personnel-related disadvantages resulting from the location, and require support through regional structural policy.  相似文献   
165.
Under which conditions do politicians listen to scientific experts in a crisis? This study addresses this question by assessing how the Swiss government implemented 186 policy recommendations formulated by the National COVID-19 Science Task Force (STF) to combat the spread of the virus and alleviate its impact on the health system, society and economy during the first year of the pandemic. Results of multiple regression analyses show that the impact of problem pressure on the propensity of the government to implement experts' recommendations varies over time: it was considerably larger during spring 2020 than afterwards. We argue that this reflects a change in status of the STF during the second phase of the pandemic: it was distanced from the political-strategic level of the crisis management organization and its epistemic authority was increasingly questioned by political parties and interest groups. Policy scholars should thus give more attention to how rapidly the government's propensity to rely on expert advice can change.  相似文献   
166.
Our article discusses the adaptability of the concept of national indifference to the context of post-war Finnish society and everyday nationalism. This period witnessed a transformation of previously exclusive and aggressive nationalism into a tempered and relatively inclusive version. Within this historical context, national indifference became an entangled category that could not be clearly attributed to a specific group of people but which carried with it a gradual change in subjective attitudes and consciousness. The case of post-war Finland demonstrates that just as nationalism changed its shape over time, becoming subtly embedded in everyday life, so too did national indifference. The article thus argues that an increase in the level of national indifference could actually make space for national integration and, furthermore, that any given expressions of nationalism, as well as the lack of them, must be studied against the background of people's experiences, which lend historically conditioned meaning to national sentiment and indifference alike.  相似文献   
167.
The paper studies what kind of proximities and distances can be found in complex innovation environments. Case-study methods were used, with the research strategy building on experiences of creating a regional innovation platform aimed at development of new models for collaborative co-operation between the private, public and third sector in the context of physical-activity promotion. Building the innovation platform brought various proximities and distances between actors into focus. Distances may explain why some of the actions have not been successful or why some actions involved should be repeated several times. However, this study also highlights the role of distances as sources of various innovation. Distances and proximities are not static, and they could be exploited from a position of knowledge.  相似文献   
168.
Archaeology is a costly and object-affine practice requiring sophisticated technical equipment, and therefore is largely initiated and run from industrialised countries. Accordingly, also data and objects are largely lodged in these countries. In rock art, this leads to the paradoxical situation that many motifs and sites with outstanding prehistoric art are better known and more often shown in northern hemisphere urban centres than in the global south rural areas where the art in fact is found. This paper will focus on the possibilities and benefits of a digital archive in making pictures, data and other archaeological source material accessible anytime from everywhere. An open online archive will in the long run flatten the hierarchical order of access to the results of archaeological research and heritage archiving. Today, this is still concentrated in the western metropoles and rarest in African hinterlands. The open access to thousands of pictures will facilitate dissemination of motifs in particular since the distribution of smartphones and network coverage are ever growing particularly in Africa’s rural areas. The African Archaeology Archive Cologne (AAArC), being licenced under Creative Commons, provides open access to tens of thousands of rock art photos and to the enormous Brandberg-Daureb Data Base that contains 39,000+ rock art figures. Additionally AAArC stores all kinds of digital archaeological products from across Africa (mainly Sudan, Algeria, Chad and Namibia), including audio and film documentary.  相似文献   
169.
This article highlights the role of food as an essential tool for immigrant Mapuche families to reinforce their ethnic identity and pass it on to the younger generations in Santiago de Chile. Food and food-related practices were a topic that many Mapuche referred to when they were invited to talk about their culture and life in Santiago; this simultaneously revealed their relation to ‘others’ (Chileans) and their connectedness to their ancestral lands in the Araucania region in the south. Staying attuned and connected to the south through Mapuche food strengthens feelings of cultural continuity and belonging, such that Mapuche ethnic identity does not surrender to the city, but rather is re-created in a new environment.  相似文献   
170.
X-ray based tree-ring data of maximum latewood densities (MXD) was combined for south-eastern Finland. This data originated from subfossil and modern pine (Pinus sylvestris L.) materials comprising a continuous dendroclimatic record over the past millennium. Calibrating and verifying the MXD chronologies against the instrumental temperature data showed a promising opportunity to reconstruct warm-season (May through September) temperature variability. A new palaeotemperature record correlated statistically significantly with the long instrumental temperature records in the region and adjacent areas since the 1740s. Comparisons with tree-ring based (MXD and tree-ring width) reconstructions from northern Fennoscandia and northern Finland exhibited consistent summer temperature variations through the Medieval Climate Anomaly, Little Ice Age, and the 20th century warmth. A culmination of the LIA cooling during the early 18th century appeared consistently with the Maunder Minimum, when the solar activity was drastically reduced. A number of coolest reconstructed events between AD 1407 and 1902 were coeval to years of crop failure and famine as documented in the agro-historical chronicles. Results indicate an encouraging possibility of warm-season temperature reconstructions using middle/south boreal tree-ring archives to detail and enhance the understanding of past interactions between humans, ecosystems and the earth.  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