全文获取类型
收费全文 | 459篇 |
免费 | 65篇 |
国内免费 | 82篇 |
出版年
2023年 | 4篇 |
2022年 | 1篇 |
2021年 | 9篇 |
2020年 | 5篇 |
2019年 | 10篇 |
2018年 | 10篇 |
2017年 | 32篇 |
2016年 | 34篇 |
2015年 | 14篇 |
2014年 | 27篇 |
2013年 | 26篇 |
2012年 | 45篇 |
2011年 | 45篇 |
2010年 | 25篇 |
2009年 | 43篇 |
2008年 | 20篇 |
2007年 | 36篇 |
2006年 | 52篇 |
2005年 | 40篇 |
2004年 | 29篇 |
2003年 | 16篇 |
2002年 | 10篇 |
2001年 | 9篇 |
2000年 | 14篇 |
1999年 | 10篇 |
1998年 | 7篇 |
1997年 | 4篇 |
1996年 | 8篇 |
1995年 | 3篇 |
1994年 | 6篇 |
1993年 | 2篇 |
1992年 | 3篇 |
1991年 | 2篇 |
1990年 | 5篇 |
排序方式: 共有606条查询结果,搜索用时 15 毫秒
191.
Christopher Tuck 《Small Wars & Insurgencies》2016,27(6):996-1018
This article evaluates the performance of the Special Air Service (SAS) during secret cross-border raids conducted as part of Britain’s undeclared war against Indonesia from 1963–1966. The analysis reviews the existing debate on the SAS’ performance during this campaign; it looks more closely at how military effectiveness might be defined; and it then examines, using the SAS’ own operations reports, the nature of their activities and their success or failure. This article concludes that critics of the SAS’ effectiveness during Confrontation are right; but for the wrong reasons. SAS operations did indeed have less effect than orthodox accounts would have it. But the reasons for this lay not in their misuse but in the exigencies of British strategy. This article demonstrates an enduring truth – no matter how ‘special’ a military force might be, tactical excellence cannot compensate reliably for problems in strategy. 相似文献
192.
193.
194.
The article is devoted to problems of defining quantitative criteria for the physical protection system (PPS) effectiveness of nuclear facilities. The article briefly describes the scheme of the PPS development used in the nuclear industry in Russia, gives a review of existing approaches to defining the minimal acceptable value of the system's effectiveness, and reveals advantages and disadvantages of the approaches. The article describes in detail an approach based on facility categorization by potential losses and a technique of defining the minimal acceptable value of the PPS effectiveness developed on its base. 相似文献
195.
196.
197.
分析了探索性分析模型的粒度原理,建立了基于粒度计算的指控系统效能测度的探索性分析模型,重点研究了探索性分析模型的建立,属性函数的构造和探索因子集的粒度获取方法,并结合多兵种联合作战案例,对使命完成时间测度进行了探索性分析,实验表明,基于粒度计算的探索性建模方法能够通过粒度的转换降低问题的复杂度,并在不同粒度层次上实现对问题描述的一致性。 相似文献
198.
闻宇 《中国人民武装警察部队学院学报》2010,(12):8-10
分析了点型火灾报警探测器"保护半径"与"保护面积"的内在关系,得出了以保护半径为主,保护面积及修正系数为辅新型计算方法,使其在不规则平面更有可操作性,能充分发挥探测器效能,给设置留下了宽裕的选择范围,使设置更趋合理;在安全性不受影响下,探测器用量最大可节省12%。 相似文献
199.
相关系数及其应用 总被引:4,自引:0,他引:4
郭红霞 《武警工程学院学报》2010,(2):3-5
在相关分析中,通常利用相关系数来分析或测定变量之间的线性相关程度。相关系数是描述两个变量或随机变量之间的线性相关程度的指标。相关系数的计算与分析是科学研究中常用的一种简单分析方法,根据相关系数可以对不同事物进行简单的聚类分析等。从相关系数的概念入手,给出相关系数的计算公式,列举了相关系数的应用。 相似文献
200.
Thomas C. Bruneau 《Defense & Security Analysis》2018,34(4):345-364
ABSTRACTThe article argues that current conceptual approaches in civil-military relations are deeply flawed resulting in its irrelevance in analyzing major issues including war and the collapse of democracy. After highlighting major flaws in the work of the late Samuel Huntington and those who follow his approach, the article argues that other conceptual approaches, including Security Sector Reform, are also flawed, or in the case of the “military effectiveness” literature, largely irrelevant. In explaining the main causes of the flawed conceptual literature, the article highlights the absence of good data and challenges in methodology. While arguing that military forces are very unlikely to engage in armed combat, it highlights the roles and missions which in the world today are implanted by these forces. As it is virtually impossible to prove effectiveness of the armed forces in these roles and missions, the article proposes a conceptual approach based on requirements. 相似文献