全文获取类型
收费全文 | 1075篇 |
免费 | 57篇 |
出版年
2022年 | 5篇 |
2021年 | 7篇 |
2020年 | 15篇 |
2019年 | 28篇 |
2018年 | 32篇 |
2017年 | 46篇 |
2016年 | 39篇 |
2015年 | 42篇 |
2014年 | 30篇 |
2013年 | 397篇 |
2012年 | 28篇 |
2011年 | 28篇 |
2010年 | 18篇 |
2009年 | 21篇 |
2008年 | 23篇 |
2007年 | 11篇 |
2006年 | 9篇 |
2005年 | 11篇 |
2004年 | 15篇 |
2003年 | 13篇 |
2002年 | 10篇 |
2001年 | 15篇 |
2000年 | 20篇 |
1999年 | 10篇 |
1998年 | 6篇 |
1997年 | 13篇 |
1996年 | 10篇 |
1995年 | 11篇 |
1993年 | 12篇 |
1992年 | 5篇 |
1991年 | 7篇 |
1989年 | 6篇 |
1988年 | 8篇 |
1985年 | 4篇 |
1984年 | 6篇 |
1982年 | 9篇 |
1980年 | 7篇 |
1979年 | 9篇 |
1978年 | 14篇 |
1977年 | 13篇 |
1976年 | 9篇 |
1975年 | 10篇 |
1973年 | 12篇 |
1972年 | 9篇 |
1971年 | 4篇 |
1970年 | 4篇 |
1969年 | 6篇 |
1967年 | 5篇 |
1966年 | 5篇 |
1959年 | 4篇 |
排序方式: 共有1132条查询结果,搜索用时 15 毫秒
51.
52.
53.
54.
55.
57.
58.
Cristina Costa António Arêde Aníbal Costa Elsa Caetano Álvaro Cunha Filipe Magalhães 《International Journal of Architectural Heritage》2015,9(7):760-774
This article aims at presenting and discussing the strategies for updating the finite element numerical modeling of stone masonry arch bridges using operational modal analysis. The study comprehended three bridges: two old ones, the St. Lázaro and the Lagoncinha bridges, and a recently constructed bridge in Vila Fria, Portugal. Updating of the bridge models is performed by comparing the numerical and experimental modal parameters. Three-dimensional detailed numerical models are used to perform modal analysis of the bridges. Experimental modal identification of the bridges is based on the measurement of their acceleration responses during normal operation. The assigned material properties are also based on available results obtained from in situ and laboratory tests and on the results of visual inspection and historical research carried out for both old bridges. 相似文献
59.
AbstractThis special issue addresses the influences of planning cultures and histories on the evolution of planning systems and spatial development. As well as providing an international comparative perspective on these issues, the collection of articles also engages in a search for new conceptual frameworks and alternative points of view to better understand and explain these differences. The articles focus on three main aspects: the change in planning systems and its impact on spatial development patterns; the interrelationship between planning cultures and histories from a path-dependency perspective; and the variations in physical development patterns resulting from different planning cultures and histories. Papers from different parts of the European continent present evidence at different scales to illustrate these aspects. In all cases, the specific combinations of political, ideological, social, economic and technological factors are important in determining urban and regional planning trajectories as well as spatial development patterns. 相似文献
60.