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   476篇
  免费   23篇
  2023年   4篇
  2022年   2篇
  2020年   4篇
  2019年   12篇
  2018年   11篇
  2017年   20篇
  2016年   18篇
  2015年   13篇
  2014年   13篇
  2013年   164篇
  2012年   13篇
  2011年   17篇
  2010年   12篇
  2009年   12篇
  2008年   15篇
  2007年   7篇
  2006年   10篇
  2005年   4篇
  2004年   13篇
  2003年   8篇
  2002年   5篇
  2001年   3篇
  2000年   9篇
  1999年   12篇
  1998年   6篇
  1997年   4篇
  1996年   2篇
  1995年   4篇
  1994年   8篇
  1993年   5篇
  1992年   4篇
  1991年   2篇
  1990年   2篇
  1989年   5篇
  1988年   6篇
  1987年   4篇
  1986年   4篇
  1985年   5篇
  1984年   5篇
  1982年   2篇
  1980年   3篇
  1978年   2篇
  1976年   2篇
  1974年   3篇
  1973年   2篇
  1972年   3篇
  1971年   5篇
  1969年   1篇
  1968年   1篇
  1954年   1篇
排序方式: 共有499条查询结果,搜索用时 15 毫秒
91.
92.
93.
Migrant fertility differentials in Ecuador   总被引:1,自引:0,他引:1  
The effects of migration on fertility in Ecuador were analyzed by subdividing migrant categories into permanent-, return-, circular-, and non-migrants, and context factors into 6 socioeconomic and agrarian variables. The study is introduced with a conceptual framework that explains personal intermediate variables and their influence on fertility in terms of demographic transition theory, and then defines the influences of selection for fertility, disruption of marital unions, and socialization into fertility norms at the origin vs. assimilation of norms at the destination. Migrants are usually better educated, younger and upwardly mobile, all selecting for lower fertility. Migration disrupts formation of marital unions, and causes separation of spouses, lowering fertility. Data for this study were from the 1974 and 1982 Ecuadorian Population Censuses. The contextual variables analyzed were urban/rural; manufacturing/agricultural; mineral extraction/economic recession; long/recent agricultural settlement; domestic/export crop; and large/medium sized farm. The analysis of personal attributes showed that fertility increased over the range on non-migrants through circular-, return- to permanent-migrants, a finding explained by degrees of disruption of unions. Higher fertility was associated with less education, lower economic participation, higher prevalence of marriage, longer residence and older ages. Regression analysis also showed that personal attributes outweighed contextual factors: thus age, marriage rates, residence time, education and economic activity were significant. Contextual factors were important only for non-migrants, except for destination variables which affected return-migrants and origin variables which affected circular-migrants. Low fertility was associated with urbanization, industrialization, mineral extraction, large farms, recent farm settlement and export crops. The results indicate cear influences of modernity and place influences on fertility of migrants.  相似文献   
94.
For 60 years, the origin of an iconographically significant example of Southeastern Mississippian symbolic art has been enmeshed in error and ambiguity. A trail of sleuthing over 25 years provides information used to assess museum curation records and published clues from 1887 to the present, contextualizing the mystery and finally allowing identification of a specific Mississippian period cemetery of origin for the so-called Moundville spider.  相似文献   
95.
ABSTRACT

This paper draws on ethnographic research with angling intervention programmes working with ‘disaffected’ young people in the UK to demonstrate how young people use the affective geographies of waterscapes to regulate their feelings and escape stressful lives. But rather than interpret the restorative or therapeutic quality of waterscapes as the consequence of (passive) immersion into green/blue spaces, we argue that ‘comfort’ is derived from an ongoing, active engagement with(in) the world. Drawing on works influenced by phenomenological theories and relational understandings of the more-than-human world, we illustrate how the affectual qualities of waterscapes are continually ‘woven’ into being through the material and embodied practices of young anglers. However, understanding why waterscapes ‘matter’ to young people also requires accounting for those assemblages originating in the past that shape these co-experienced worlds.  相似文献   
96.
ABSTRACT

Building survey is an essential data-collection procedure to feed large-scale seismic vulnerability assessment. The available strategies usually consider survey forms to gather information about the urban buildings. The application of the available survey forms poses important challenges for the case of the heterogeneous urban centers including different structural typologies. This work proposes four specific survey forms for traditional structural typologies constructed with masonry, reinforced concrete, mixed steel-reinforced concrete, and timber. The proposed forms request essential information on the parameters necessary for seismic vulnerability assessment, by evaluating the lateral-load resistant system, regularity, condition of conservation, and existing damages. The survey forms were applied to the study of 111 buildings of the historical center of Valparaíso, Chile. The proposed methodology was complemented with the use of Geographic Information Systems to obtain a complete database with the structural characterization of the most representative typologies for future works of large-scale seismic vulnerability assessment.  相似文献   
97.
Book reviews     
The Devil in the New World: The Impact of Diabolism in New Spain. By FERNANDO CERVANTES. New Haven: Yale University Press, 1994. Pp. x, 182.

An Evil Lost to View? An Investigation of Post‐Evangelisation Andean Religion in Mid‐Colonial Peru. By KENNETH MILLS. Liverpool: Institute of Latin American Studies, University of Liverpool, Monograph Series No. 18, 1994. Pp. 147.

The Limits of Racial Domination: Plebeian Society in Colonial Mexico City, 1660–1720. By R. DOUGLAS COPE. Madison: University of Wisconsin Press, 1994. Pp. xiii, 220.

Memory, Myth, and Time in Mexico: From the Aztecs to Independence. By ENRIQUE FLORESCANO. Trans, by Albert G. Bork and Kathryn R. Bork. Austin: University of Texas Press, 1994. Pp. ix, 282.

Fuentes manuscritas para la historia de Iberoamérica. Guía de instrumentos de investigación. Por SYLVIA L. HILTON e IGNACIO GONZALEZ CASASNOVAS. Madrid: Fundación Mapfre América‐Instituto Histórico Tavera, 1995. Pp. 617.

The Town of San Felipe and Colonial Cacao Economies. By EUGENIO PINERO. Philadelphia: Transactions of the American Philosophical Society, vol. 84, 1994. Pp. 189.

Imperial Panama: Commerce and Conflict in Isthmian America 1550–1800. By CHRISTOPHER WARD. Albuquerque: University of New Mexico Press, 1993. Pp. xii, 272.  相似文献   

98.
The peripheral location of Northern Ireland as an Objective 1 region in the EU and consequences in terms of competitiveness and economic disadvantage are discussed. The need for high levels of public expenditure to at least partly offset these effects is argued; this is particularly apparent in the mechanisms which have been adopted to promote urban regeneration. The dominance of central government in the planning and development process is highlighted together with recent policy initiatives that place increasing emphasis upon partnerships as a delivery mechanism. The paper examines various forms of partnership arrangements highlighting how structures and actors differ depending upon local circumstances and objectives.  相似文献   
99.
100.
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