全文获取类型
收费全文 | 560篇 |
免费 | 31篇 |
出版年
2023年 | 5篇 |
2022年 | 6篇 |
2021年 | 4篇 |
2020年 | 11篇 |
2019年 | 21篇 |
2018年 | 23篇 |
2017年 | 37篇 |
2016年 | 32篇 |
2015年 | 26篇 |
2014年 | 21篇 |
2013年 | 130篇 |
2012年 | 23篇 |
2011年 | 13篇 |
2010年 | 19篇 |
2009年 | 20篇 |
2008年 | 17篇 |
2007年 | 15篇 |
2006年 | 14篇 |
2005年 | 13篇 |
2004年 | 10篇 |
2003年 | 8篇 |
2002年 | 5篇 |
2001年 | 13篇 |
2000年 | 7篇 |
1999年 | 8篇 |
1998年 | 7篇 |
1997年 | 9篇 |
1996年 | 8篇 |
1995年 | 11篇 |
1994年 | 3篇 |
1993年 | 3篇 |
1992年 | 3篇 |
1991年 | 2篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1986年 | 2篇 |
1983年 | 4篇 |
1982年 | 2篇 |
1981年 | 2篇 |
1980年 | 3篇 |
1979年 | 5篇 |
1978年 | 2篇 |
1976年 | 3篇 |
1972年 | 2篇 |
1971年 | 2篇 |
1970年 | 2篇 |
1969年 | 2篇 |
1966年 | 1篇 |
1965年 | 1篇 |
1950年 | 1篇 |
排序方式: 共有591条查询结果,搜索用时 15 毫秒
11.
12.
13.
Extreme weather events in northeastern New Brunswick (Canada) for the period 1950–2012: Comparison of newspaper archive and weather station data
下载免费PDF全文
![点击此处可从《The Canadian geographer》网站下载免费的PDF全文](/ch/ext_images/free.gif)
In the context of global warming, changes in extreme weather and climate events are expected, particularly those associated with changes in temperature and precipitation regimes and those that will affect coastal areas. The main objectives of this study were to establish the number of extreme events that have occurred in northeastern New Brunswick, Canada in recent history, and to determine whether their occurrence has increased. By using archived regional newspapers and data from three meteorological stations in a national network, the frequency of extreme events in the study area was established for the time period 1950–2012. Of the 282 extreme weather events recorded in the newspaper archives, 70% were also identified in the meteorological time series analysis. The discrepancy might be explained by the synergistic effect of co‐occurring non‐extreme events, and increased vulnerability over time, resulting from more people and infrastructure being located in coastal hazard zones. The Mann Kendall and Pettitt statistical tests were used to identify trends and the presence of break points in the weather data time series. Results indicate a statistically significant increase in average temperatures and in the number of extreme events, such as extreme hot days, as well as an increase in total annual and extreme precipitation. A significant decrease in the number of frost‐free days and extreme cold days was also found, in addition to a decline in the number of dry days. 相似文献
14.
Scott Alan Carson 《Historical methods》2018,51(1):1-12
When traditional methods for measuring economic welfare are scarce or unreliable, heights and BMIs are now well-accepted measurements that represent biological conditions during economic development. Weight, after controlling for height, is an additional measure for current net nutrition. Little is known about how weights varied among Mexicans living in the nineteenth century American West. Between 1870 and 1920, average Mexican weight was low and remained constant. Mexican farmers had the heaviest weights, and unskilled worker weights were low. Weight of Mexican-born individuals were higher than Mexicans born in the United States at low weights but lower at high weights. For combined characteristics, weight varied the most with age, an uncontrollable characteristic, indicating that nineteenth century Mexican current net nutrition varied the most with factors over which they had no control. 相似文献
15.
ABSTRACTStakeholder collaboration is increasingly being lauded as important in the development of accessible tourism. The purpose of this study is to explore how stakeholders collaborate in the development of accessible tourism. Drawing on research conducted in Western Australia, the study utilises qualitative approaches in its exploration. The evidence from the study strongly indicates that there is minimal collaboration between stakeholders in the development of accessible tourism. The findings suggest that when there are multiple and diverse stakeholders at play, an organic, circulatory and developmental approach to stakeholder collaboration should be adopted to innovatively move towards inclusive tourism – an ideal that aspires to equal access and inclusion for all. To this end, four emergent interrelated themes are considered: control and coordination, communication, clarity of roles and responsibilities and collaboration and integration. From these themes, a framework that can be applied to encourage collaboration is proposed. 相似文献
16.
This study aims to delineate the sociodemographic differences in disability prevalence across the population aged 60 years and over in Bangladesh, and to investigate the association of factors with reporting disability in later life. A microdata sample for those aged 60 years or over from the Census of Bangladesh 2011 was used where disability was assessed with a self-reported single response question. Logistic regression models were performed separately for men and women. Results reveal that the disability prevalence rate increased sharply with age, and it was higher among older women (5.2 per cent) compared to men (4.8 per cent). Physical and vision disabilities were the two categories with the highest prevalence of reported disabilities, with a higher prevalence of physical disability among men and vision disability among women. Being older, female, currently not in marital partnership, and having a lower educational attainment, not being employed, living alone, and residing in the rural areas were significantly associated with reporting disability in later life. The higher prevalence of disability among older women, those who are illiterate, and those residing in rural areas highlights the need for policies prioritising these groups. Special attention should also be given to those who are currently not in marital partnership, particularly women who are living alone. 相似文献
17.
James W. Scott 《Journal of Historical Geography》1976,2(4):387-388
18.
19.
In this paper, we argue that place mapping is useful for approaching children's conception of place and that this is of relevance when designing physical activity interventions. We contend that socio-material factors influence children's perception and use of places, and are crucial to understand in relation to their use of local neighbourhoods for physical activity. A place mapping of children's understandings and everyday use of their local neighbourhood in suburban Copenhagen was conducted with a fifth grade elementary school class. The mapping and subsequent analysis resulted in three categories of relevance to children's conceptions of place; located social experiences, experiences of the unknown, and children's contested spaces. We argue that such knowledge can provide useful information in the development and evaluation of activities that promote physical activity in urban spaces. 相似文献
20.
New Developments in Spatial Economics and Economic Geography,edited by Philip McCann. 2013. Series: The International Library of Critical Writings in Economics. Cheltenham,U.K. and Northampton,Massachusetts: Edward Elgar. 514 + xiii. ISBN: 978‐1‐84844‐432‐4, $252
下载免费PDF全文
![点击此处可从《Journal of regional science》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Julie Le Gallo 《Journal of regional science》2016,56(1):184-186