全文获取类型
收费全文 | 218篇 |
免费 | 87篇 |
国内免费 | 8篇 |
出版年
2023年 | 1篇 |
2022年 | 4篇 |
2021年 | 2篇 |
2020年 | 4篇 |
2019年 | 14篇 |
2018年 | 11篇 |
2017年 | 22篇 |
2016年 | 21篇 |
2015年 | 14篇 |
2014年 | 14篇 |
2013年 | 27篇 |
2012年 | 15篇 |
2011年 | 16篇 |
2010年 | 14篇 |
2009年 | 14篇 |
2008年 | 13篇 |
2007年 | 7篇 |
2006年 | 10篇 |
2005年 | 10篇 |
2004年 | 14篇 |
2003年 | 7篇 |
2002年 | 7篇 |
2001年 | 4篇 |
2000年 | 7篇 |
1999年 | 6篇 |
1998年 | 5篇 |
1997年 | 9篇 |
1996年 | 5篇 |
1995年 | 1篇 |
1994年 | 4篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 5篇 |
1990年 | 1篇 |
1989年 | 3篇 |
排序方式: 共有313条查询结果,搜索用时 0 毫秒
311.
军用飞机可用度概念模型及仿真 总被引:1,自引:0,他引:1
使用可用度是军用飞机战备完好性的重要度量标准.运用传统的解析法计算使用可用度有其弊端.以军用飞机使用及维修保障过程中各个系统要素为基础建立了使用可用度概念模型;根据概念模型运用仿真软件Extend建立了仿真模型.仿真结果表明模型运行稳定可靠,模型中各模块算法合理有效,实现了模型解算目标,可信度高.从而为飞机可用度研究提供了一种新方法. 相似文献
312.
Emeka Thaddues Njoku 《Small Wars & Insurgencies》2019,30(6-7):1233-1263
ABSTRACTThere is a dearth of studies on indirect victims of sexual violence in counter-terrorism efforts. Using Nigeria as a case study, this paper argues that global and state-level counter-terrorism policies have generally failed to account for the psychological effects of the engagement of female NGO workers in counter-terrorism operations or mitigating the effects of terrorism in conflict zones. Specifically, there has been an increase in sexual violence perpetrated by some members of the security agencies involved in counter-terrorism operations in North-eastern Nigeria. As a result, female NGO workers carry out Medicare, psychosocial counselling and advocacy for these victims. Female NGO workers become exposed to the trauma of victims of sexual violence, which affects their mental health and thus performances in counter-terrorism activities in the country. This altered their worldview on issues of safety even among secured locations or among the presence of security agents and reinforced feelings of powerlessness. 相似文献
313.
ABSTRACT Scholars have credited a model of state-led capitalism called the ‘developmental state’ with producing the economic miracles of Japan, South Korea, and Taiwan. This article examines how the developmental state was shaped by the Cold War. US grand strategy focused on accelerating economic development among allies that were under the greatest threat from Communist China and North Korea. American aid agencies became involved in the process of state-building in Japan, South Korea, and Taiwan and supported economic planning. I verify this claim by contrasting US policies on Taiwan with US policies in the Philippines, which faced a weaker Communist threat. 相似文献