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   289篇
  免费   25篇
  314篇
  2023年   3篇
  2022年   1篇
  2021年   2篇
  2020年   7篇
  2019年   14篇
  2018年   11篇
  2017年   14篇
  2016年   28篇
  2015年   14篇
  2014年   10篇
  2013年   71篇
  2012年   8篇
  2011年   9篇
  2010年   8篇
  2009年   9篇
  2008年   6篇
  2007年   8篇
  2006年   9篇
  2005年   7篇
  2004年   10篇
  2003年   6篇
  2002年   5篇
  2001年   2篇
  2000年   11篇
  1999年   6篇
  1998年   3篇
  1997年   3篇
  1996年   5篇
  1995年   3篇
  1994年   4篇
  1993年   3篇
  1991年   2篇
  1990年   1篇
  1989年   1篇
  1987年   1篇
  1985年   1篇
  1984年   2篇
  1983年   2篇
  1981年   1篇
  1980年   1篇
  1978年   1篇
  1975年   1篇
排序方式: 共有314条查询结果,搜索用时 0 毫秒
101.
This Comment tests empirically the important proposition made by Palma in this journal (Development and Change, 2011) that deciles 5 to 9 of the income distribution across developing economies have been able to secure and defend a stable share (around 50 per cent) of the total available income, so that changes in income inequality are now a matter of struggle between the top 10 per cent and the bottom 40 per cent of the population, ranked by income. The author finds that the proposition does not hold: changes in top 10 per cent shares are matched by changes in the shares of both the other cohorts.  相似文献   
102.
This article juxtaposes two of Richard Baxter’s autobiographical accounts written 5 years apart but along very different lines. In the final chapter of A Holy Commonwealth (1659), Baxter confidently asserted the rightness of Parliament’s cause in the civil wars; for Baxter, it is a strikingly optimistic, triumphalist and providentialist account. In the Reliquiae Baxterianae, which he began to write in 1664, he explicitly distanced himself from any such claims about the wars and he wrote in a more chastened fashion. The former account, and the kind of autobiography it intimates, brings Baxter’s purposes in writing the Reliquiae more clearly into focus. The article advances on recent scholarship by Kathleen Lynch while investigating the nature of autobiography. The iterations of Baxter’s autobiography demonstrate that such accounts are first a story that the author tells himself or herself. If events negate that story, it is never told.  相似文献   
103.
The European Union (EU) has been involved in influencing major infrastructure in the fields of transport and energy mainly by means of the Trans-European Networks (TENs) programme begun in the 1990s. Other macro-planning and wider spatial planning exercises, including the European Spatial Development Perspective, made reference to such infrastructure systems, particularly in relation to the need for connectivity and mobility, but normally did not attempt to intervene in an area seen as one of the prerogatives of national states. Much more important have been the wider programmes of liberalization pressed by the EU since the 1980s, but these have had no specific geographical content. A revision of the TENs programmes since 2008 has led to proposals to increase the role of the EU, by drawing up continent wide schemas indicating needs for future investment in many fields of both transport and energy, and introducing new procedures to streamline decision-making by designating projects as of European interest. The initiatives in transport and energy are described here, including the two Regulations currently under discussion within the EU institutions. These include major proposals for cross-European multi-modal transport corridors within an EU core network, and regional schemas for energy drawn up primarily by energy industries and government counterparts. Both are likely to be of real significance for spatial planners throughout the continent, and have major impacts on the shapes of future infrastructure networks. These proposals are analysed, as cases of the rescaling and re-ordering of government, giving more force to the EU in these fields, and reinforcing sectoral- or silo-based decision-making. It is argued that somewhat different outcomes will result in the few areas, such as the Baltic, where long-term macro-regional collaboration has been present, from the rest of Europe, where these sectoral programmes may complicate further the mix of planning impacting on each region, making even more confused the accountability of governance. Suggestions are made for the careful assessment of these schemas by national and regional governments, and for the creation of some spatial planning analytical capability at the EU level, which could examine this type of proposals, with powerful spatial impacts.  相似文献   
104.
Within the Pacific Islands, the archaeological phenomenon called the Lapita Cultural Complex is widely regarded as first appearing in the Bismarck Archipelago of Papua New Guinea and then spreading southward. This complex supposedly represents the sudden arrival of migrants from Island Southeast Asia with new technologies, foreign languages, and a different worldview. We question these interpretations and the assumptions behind them and suggest instead that current evidence supports the introduction of new cultural traits over several centuries, rather than the sudden intrusion of foreign migrants.  相似文献   
105.
106.
Pollen, non-pollen palynomorphs and charcoal from a colluvial soil surrounded by prehistoric petroglyphs (Campo Lameiro, NW Spain) were studied in order to assess the nature of human activities and their impact on Holocene vegetation patterns. Several phases of anthropogenic impact were observed. (i) Between 7.6 and 6.5 ka cal BP, synanthropic taxa (Urtica dioica type, Plantago lanceolata type) and coprophilous fungi (e.g. Sporormiella-type) are indicative of early (pre-agricultural) creation of small patches of pasture using fire, possibly for incipient animal husbandry or as part of a deliberate strategy to improve game availability. Such activities only had a minor effect on the deciduous Quercus-dominated forest established earlier during the Holocene Thermal Maximum. (ii) Between 5.9 and 4.8 ka cal BP a more intense signal indicative of pastoral activity was detected, corresponding to the Neolithic period. (iii) Between 4.8 and 3.4 ka cal BP, which fits within the hypothetical timeframe of petroglyph creation, the synanthropic and humidity (e.g. Cyperaceae, Mougeotia) indicators diminished while charcoal concentration increased, which can be explained by Mid-Holocene cooling/drying (Neoglaciation) in combination with reduced human impact, or by non-pastoral activities in the area possibly in association with the development of the rock art culture, converting pasture to protected open ground through anthropogenic fires. (iv) During the Late Bronze Age and Early Iron Age (3.4–2.5 ka cal BP), grazing pressure and fire regime intensity are high, coinciding with evidence of regional forest regression, despite an amelioration in climate. (v) Later phases, not corresponding to prehistoric rock art contexts, include a phase of heavy grazing and reduced fire frequency (from ca. 2.5 to 1.2 ka cal BP) as well as the near complete elimination of the deciduous woodland, the expansion of ericaceous shrubland and the evidence of local agriculture and afforestation. These results are consistent with earlier studies in the area and highlight the spatial heterogeneity in the vegetation especially during periods of prehistoric anthropogenic interference.  相似文献   
107.
108.
109.
Disabled students form a significant but under represented minority in higher education in the UK. Participation appears to be particularly low in disciplines that contain a fieldwork component. Fieldwork has been recognized as a barrier to the participation of disabled students. This paper emphasizes a critical perspective on fieldwork, highlighting the way in which fieldcourses as currently conceived, enacted and experienced, can exclude disabled students. It discusses a survey of the experiences of providing learning support to disabled students undertaking fieldwork in geography, earth and environmental science departments in the UK. It also considers the various ways in which the images, spaces, practices and cultures of fieldwork may exclude or marginalize disabled students and the different ways in which fieldwork may be made more inclusive.  相似文献   
110.
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