全文获取类型
收费全文 | 1177篇 |
免费 | 96篇 |
国内免费 | 75篇 |
出版年
2024年 | 2篇 |
2023年 | 3篇 |
2022年 | 5篇 |
2021年 | 35篇 |
2020年 | 35篇 |
2019年 | 9篇 |
2018年 | 20篇 |
2017年 | 60篇 |
2016年 | 66篇 |
2015年 | 25篇 |
2014年 | 90篇 |
2013年 | 57篇 |
2012年 | 106篇 |
2011年 | 98篇 |
2010年 | 66篇 |
2009年 | 119篇 |
2008年 | 86篇 |
2007年 | 51篇 |
2006年 | 79篇 |
2005年 | 85篇 |
2004年 | 57篇 |
2003年 | 36篇 |
2002年 | 29篇 |
2001年 | 33篇 |
2000年 | 22篇 |
1999年 | 17篇 |
1998年 | 10篇 |
1997年 | 11篇 |
1996年 | 4篇 |
1995年 | 10篇 |
1994年 | 3篇 |
1993年 | 2篇 |
1992年 | 7篇 |
1991年 | 3篇 |
1990年 | 7篇 |
排序方式: 共有1348条查询结果,搜索用时 15 毫秒
51.
52.
53.
国防科技和武器装备领域是军民融合发展的重点,也是衡量军民融合发展水平的重要标志。加快国防科技和武器装备军民融合发展,是保军强军的重要支撑,更关乎国家安全和发展一系列重大问题,必须从战略高度深刻领会其全局意义,以清醒头脑研判国防科技和武器装备军民融合发展形势,用务实举措推动国防科技和武器装备军民融合创新发展。 相似文献
54.
55.
Extant literature documents a relationship between military deployment and the risk of an international terrorist attack against citizens of the deploying country. It appears that deployment significantly increases the possibility of terrorist actions in the home country. In particular, if country A decides to send troops to nation B, then citizens of the former country are more likely to fall victim of an attack carried out by a terrorist organisation originating from the latter country. Contributing to this line of literature, we further refine this relationship by distinguishing between regions where the troops are sent as well as by introducing differences between types of deployment. Our results indicate that missions to Asia and the Middle East are more dangerous than missions to other regions as reflected by the terrorist threat in the home country. Robustness tests do however show that the significance of the location variable Asia is predominantly attributed to the mission to Afghanistan. As for types of deployment, only ad hoc missions seem to increase the risk of an attack, whereas no significant results are found for other missions such as operations under UN and NATO flag. Leaving out the missions to Iraq and Afghanistan however also increases the danger resulting from missions by fixed coalitions. Our results find however no evidence that ‘wearing a blue helmet’ increases the probability of a terrorist attack at home. 相似文献
56.
57.
58.
59.
60.