全文获取类型
收费全文 | 3336篇 |
免费 | 83篇 |
国内免费 | 1篇 |
专业分类
3420篇 |
出版年
2021年 | 37篇 |
2019年 | 88篇 |
2018年 | 52篇 |
2017年 | 80篇 |
2016年 | 79篇 |
2015年 | 61篇 |
2014年 | 67篇 |
2013年 | 702篇 |
2010年 | 36篇 |
2009年 | 37篇 |
2008年 | 47篇 |
2007年 | 52篇 |
2006年 | 36篇 |
2005年 | 42篇 |
2004年 | 56篇 |
2003年 | 42篇 |
2002年 | 59篇 |
1999年 | 41篇 |
1998年 | 46篇 |
1997年 | 47篇 |
1996年 | 63篇 |
1995年 | 41篇 |
1994年 | 59篇 |
1993年 | 63篇 |
1992年 | 58篇 |
1991年 | 74篇 |
1990年 | 39篇 |
1989年 | 72篇 |
1988年 | 78篇 |
1987年 | 68篇 |
1986年 | 71篇 |
1985年 | 65篇 |
1984年 | 38篇 |
1983年 | 42篇 |
1982年 | 43篇 |
1981年 | 46篇 |
1980年 | 51篇 |
1979年 | 45篇 |
1978年 | 49篇 |
1977年 | 45篇 |
1976年 | 45篇 |
1975年 | 46篇 |
1974年 | 52篇 |
1973年 | 50篇 |
1972年 | 52篇 |
1971年 | 43篇 |
1970年 | 40篇 |
1969年 | 40篇 |
1968年 | 34篇 |
1967年 | 34篇 |
排序方式: 共有3420条查询结果,搜索用时 0 毫秒
351.
H. W. Kuhn 《海军后勤学研究》2005,52(1):7-21
This paper has been presented with the Best Paper Award. It will appear in print in Volume 52, No. 1, February 2005. 相似文献
352.
An area defense consists of several groups that act independently, i.e., do not communicate with each other. Each group has a fixed number of defenders and a controller that allocates these defenders optimally against the individual attackers comprising an attack. We analyze the effectiveness of this partially coordinated defense against a simultaneous attack of known size in which all attackers are considered to be equally lethal. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2005. 相似文献
353.
We examine two key stochastic processes of interest for warranty modeling: (1) remaining total warranty coverage time exposure and (2) warranty load (total items under warranty at time t). Integral equations suitable for numerical computation are developed to yield probability law for these warranty measures. These two warranty measures permit warranty managers to better understand time‐dependent warranty behavior, and thus better manage warranty cash reserves. © 2005 Wiley Periodicals, Inc. Naval Research Logistics, 2005. 相似文献
354.
355.
J. Brent Wilson Ian F.W. Beckett John T. Fishel Richard Dale 《Small Wars & Insurgencies》2013,24(3):425-432
John Lawrence Tone, The Fatal Knot: The Guerrilla War in Navarre and the Defeat of Napoleon in Spain. Chapel Hill and London; The University of North Carolina Press 1994. Pp.vii + 239, 1 map, biblio., index. $34.95 (cloth). ISBN 0–8078–2169–1. Robert Holland (ed), Emergencies and Disorder in the European Empires after 1945. London: Frank Cass, 1994. Pp.x + 256; index. £32 (cloth); £15 (paper). ISBN 0–7146–4516–8 and 4109 X Deborah L. Norden, Military Rebellion in Argentina: Between Coups and Consolidation. Lincoln, NE: University of Nebraska Press, 1996. Pp.242, index, $35/$17.50 (paper). ISBN 0–8032–8369–5. William M. Minter, Apartheid's Contras: An Inquiry into the Roots of War in Angola and Mozambique. London and Atlantic Highlands, NJ: Zed Books Ltd; Johannesburg: Witwatersrand University Press, 1994. Pp. xii +308, 3 maps, biblio., index. $69.95/£39.95 (cloth); $29.95/£16.95(paper). ISBN 1–85649–266–4 and 266–4. 相似文献
356.
B J PHIRI 《African Security Review》2013,22(4):125-134
Democratic rule requires, amongst other things, orderly civil-military relations. Zambia's military, with some exceptions, have generally remained under firm civilian control, unlike many forces in the region. Initially the military was based on the British colonial model but during the struggle for independence the force was indigenised. Instead of representing a colonial power, the military came to represent a specific political viewpoint: one party participatory democracy. President Kaunda, the leader of UNIP, was chiefly responsible for the politicisation of the military and ensuring its loyalty to the ruling party. Quasi-military institutions such as the Combined Cadet Force and the Home Guard Unit were useful links between civilian and military personnel. When Frederick Chiluba, leader of the MMD, took over in 1991 he tried to make the military more professional and curb its power over civilian affairs. A defence council and parliamentary regulation were instituted to avoid further military coups. 相似文献
357.
Greece has regularly ranked as the country with the highest defence burden in NATO and the European Union. Over the past decades she has allocated an averatge 6% of GDP to defence yearly. This study using neural networks examines the external security determinants of Greek military expenditure in the context of the ongoing Greek‐Turkish conflict. 相似文献
358.
359.
360.
Charles D. Melson 《Small Wars & Insurgencies》2013,24(1):130-131
Barry Davies, Joining the SAS: How to Get In and What It's Like.Miami: Lewis International Inc., 1998. Pp.214, photos, index. $22.95. ISBN 0–966771–4–2.Peter McAleese and John Avery, McAleese's Fighting Manual: The Definitive Soldier's Handbook.London: Orion, 1998. Pp.179, illus. £18.95. ISBN 0–75280–063–9.Steve Crawford et al.The SAS Encyclopedia: The Definitive Guide to the World's Crack Regiment.Miami: Lewis International Inc., 1998. Pp.288, photos, maps, index. $29.95. ISBN 0–9666771–0–2.Barry Davies et al.The Complete Encyclopedia of the SAS.London: Virgin Publishing Ltd, 1998. Pp.288, photos, maps, no index. $39.95. ISBN 1–85227–707–6. 相似文献