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   8170篇
  免费   169篇
  2024年   19篇
  2023年   65篇
  2022年   123篇
  2021年   118篇
  2020年   332篇
  2019年   246篇
  2018年   316篇
  2017年   294篇
  2016年   308篇
  2015年   199篇
  2014年   217篇
  2013年   974篇
  2012年   534篇
  2011年   456篇
  2010年   349篇
  2009年   422篇
  2008年   434篇
  2007年   483篇
  2006年   481篇
  2005年   436篇
  2004年   354篇
  2003年   347篇
  2002年   247篇
  2001年   184篇
  2000年   202篇
  1999年   59篇
  1998年   26篇
  1997年   14篇
  1996年   23篇
  1995年   13篇
  1994年   10篇
  1993年   13篇
  1992年   12篇
  1991年   9篇
  1990年   3篇
  1989年   1篇
  1988年   4篇
  1987年   1篇
  1984年   1篇
  1983年   3篇
  1982年   1篇
  1981年   1篇
  1980年   2篇
  1979年   1篇
  1978年   2篇
排序方式: 共有8339条查询结果,搜索用时 15 毫秒
1.
马科斯独裁下的菲律宾土地改革(1972—1986)   总被引:1,自引:0,他引:1  
菲律宾农村土地分配的不公正状况在马科斯统治初期依然严峻,土地问题的急剧升级加剧了政体的演变,但军管法下的土改并没有使农民的生活状况得到明显改善。马科斯政府虽然与“旧寡头政治执政者们”逐步脱离,但和军人集团、政策制定者及商业权贵结合,实行“亲朋资本主义”政治,继续忽视农民的利益,农村基层组织也为地主势力所把持。制度创新的滞后严重阻碍了菲律宾农村土地改革和农村发展。  相似文献   
2.
The context of this paper is return visits to the homeland of labour migrants in Europe. The paper draws on data from the author's ethnographic fieldwork on the island of Guernsey and in Latvia during 2010–2012. By theorizing the relevance which the research participants attached to the phenomenon of corporeal co‐presence in relation to these visits, the paper bridges a timegeographic perspective with phenomenological interpretations. It explains how actual experience during the return path is influenced by both past trajectories and future anticipation. Return visits are conceptualized as spaces of encounter‐displacement and illustrated through examples of sensory and emotional experiences of anticipating for the return, the actual travel, time spent in the home area, and departure. The paper suggests that a focus on the body scale can help researchers to gain important insights into how the path is shaped through the corporeal experiences and how it shapes interpretations about home and possible future orientations.  相似文献   
3.
Book Reviews     
Books reviewed:
M. Steiner (ed.), Clusters and Regional Specialisation. On Geography,Technology, and Networks
Denis J.B. Shaw, Russia in the Modern World. A New Geography
Ron Martin, Money and the Space Economy  相似文献   
4.
Now and Then1     
Michael J. Watts 《对极》2010,41(Z1):10-26
Abstract: Antipode was launched into the firmament of the 1970s. We might reflect upon how well the journal and its contributors fully appreciated the historical gravity and weight of what was surrounding the project to create “a radical journal of geography”. What sort of radicalism was on offer? The language was “social relevance” from “a radical (Left) political viewpoint”. In writing to celebrate Antipode's birthday, this time in another, and similar, firmament there is still the need to confront the challenge of radicalism and its meanings. Whether we agree with Perry Anderson that the last vestiges of the 1960s have been finally swept away, that the “fluent vision” of the Right has no equivalent on the Left and that embedded liberalism is now as remote as “Arian bishops”, where do radical alternatives stand in relation to the fractured hegemony of neoliberalism? At the very least the need for alternatives is more pressing than ever. David Harvey has proposed rethinking the idea of “the right to the city”. But what other rights might we rethink? I reflect upon this question by returning to the 1960s and 1970s and Marxist debates over the law, and by thinking about the possibilities offered by this Polanyian moment.  相似文献   
5.
James Hamilton, duke of Hamilton and the Scots jacobites are generally linked in analyses of the final years of the Scots polity. Indeed, Hamilton is often presented as the leader of the jacobite party in the Scottish parliament. Yet both contemporaries and historians have been unsure what to make of his on-again, off-again, conduct with respect to the exiled Stuarts and France. This has fuelled an ongoing debate about Hamilton's erratic and highly enigmatic behaviour during the winter of 1706–7, when the Union was passing the Scottish parliament. Was he genuinely opposing the Union? Was he duped by the court? Or was he, ‘bought and sold for English gold ’? This essay takes a fresh look at the duke and his part in the Union crisis in the light of new and previously underused jacobite sources with a view to better understanding Hamilton's aims, objectives, and influence with this crucial group. Only the jacobites and the Cameronians were potentially willing to take their opposition to the Union to God's Acre. But neither party immediately flew to arms in response to passage of a union they both believed was a betrayal of everything they held dear, and Hamilton was a major factor in their failure to do so. This essay thus takes a close look at the duke's part in preventing a major national uprising against the Union in the winter of 1706–7 and advances a new interpretation of his conduct and significance throughout the Union crisis.  相似文献   
6.
Robert d'Arbrissel, first of the wandering preachers of the late eleventh century in northwestern France, often skirted the edges of heresy. Scholars have wondered what separated Robert from similar figures, such as Henry of Lausanne, who were in fact condemmed as heretics. Since Robert came from a modest family in a region of Brittany dominated by the Angevin counts, his career was always oriented towards Anjou. One possibility, then, is to examine Robert's career within the context of the Angevin nobility. His first patron, Bishop Silvester of Rennes, was a member of the count of Anjou's entourage, as were many other powerful figures who later supported him. Chief of these was Rainald, Lord of Craon. Under Reinald's patronage, Robert was able to establish the church of La Roë with the personal approval of Pope Urban. When Robert left to preach to crowds of followers, powerful Angevin churchmen recalled him to his duty. Once again it was the Angevin nobility, many related to the house of Craon, who provided Robert with the means to establish a monastery at Fontevraud. This establishment, backed by the Angevin nobility, kept Robert within the good graces of the Church.  相似文献   
7.
This article seeks to dispel the popular myth that Pope Gregory X (1271–6) wanted to change the government of the kingdom of Jerusalem by putting Charles of Anjou on its throne through the purchase of the claim of Maria of Antioch. A study of the Angevin chancery records – little used by crusade historians – demonstrates that Charles had an interest and influence in the kingdom before Gregory became pope. An examination of Gregory's papal registers shows that he consistently treated Hugh of Lusignan as king of Jerusalem and that the pope had no desire for anything to disrupt the peace in Christendom that he deemed necessary for his crusade.  相似文献   
8.
This paper explores the career of Ruth Taylor White, an American cartographic illustrator who published a significant number of pictorial maps from the 1920s into the 1940s. Taylor White’s ‘cartographs’ (as she called them) were characterized by her signature bobble-headed cartoon characters who romped through colourful, attractive landscapes. These visually rich and highly narrative maps simultaneously strove for accuracy and engaged in profound stereotyping with regard to culture, race, gender and class. They reveal not only the aesthetic and conceptual preferences of their maker but also the cultural biases of their middle-class, white American audience.  相似文献   
9.
针对莫高窟在保护利用数据传输过程中出现的问题与发展趋势,提出了利用无线网络深度覆盖技术构建数据传输平台,解决莫高窟大型洞窟内保护利用数据无法传输的问题。为构建实用性强的传输平台,采取了如下措施。首先,针对莫高窟保护利用各项业务数据采集、传输模式、传输机制等各阶段特点,提出了基于无线网络深度覆盖技术构建数据传输试验平台的需求;其次,设计了试验平台构建方案,依据莫高窟洞窟分布与建筑形制确定了试验平台构建位置。结合莫高窟目前无线网络覆盖现状,通过选型分析确定了无线网络深度覆盖关键技术,并应用该技术构建试验平台;最后,对试验平台无线信号覆盖范围、信号强度、传输性能、安全性等进行验证,确保数据传输的完整性与连续性。此试验平台已运行一年有余,应用效果良好。  相似文献   
10.
Biogeographers, ecologists, palaeontologists, and conservation managers often deal with checklists in which not all individuals have been identified to a species level, or the accuracy of species identification is questionable. Is it possible and credible to investigate species richness based on such checklists? Studies on macrofauna in the Far Eastern seas, eastern Arctic seas, and adjacent waters of the Pacific and Arctic Oceans suggest that in different habitats and for diverse taxa, species, and higher taxa richness strongly correlate with each other and increase with an expansion in the study area and sample size according to the species–area law. Such an increase is higher in the bottom zone than in the pelagic. Species and higher taxa richness also show a decrease from lower to higher latitudes, which is in line with the Humboldt–Wallace’s law. According to Willis’ law and self-similarity in the organisation of taxonomic levels, species richness can be assessed based on the genus, family, and order richness. In other words, supraspecies richness itself can tell us the same as species richness and therefore certain global patterns revealed at the species level may also be revealed at the supraspecies level. Such a concordance in general trends among richness parameters at different taxonomic levels in practice implies that species richness can be studied based on lists that lack species identifications or lists with doubtful species identification. We suggest bolder use of supraspecies richness in science and practice, discussing the disadvantages and advantages of this approach.  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