全文获取类型
收费全文 | 741篇 |
免费 | 18篇 |
专业分类
759篇 |
出版年
2021年 | 11篇 |
2019年 | 15篇 |
2018年 | 8篇 |
2017年 | 19篇 |
2016年 | 13篇 |
2015年 | 14篇 |
2014年 | 18篇 |
2013年 | 134篇 |
2012年 | 7篇 |
2010年 | 10篇 |
2009年 | 17篇 |
2007年 | 11篇 |
2006年 | 10篇 |
2005年 | 11篇 |
2004年 | 16篇 |
2002年 | 17篇 |
2001年 | 9篇 |
2000年 | 11篇 |
1999年 | 7篇 |
1998年 | 15篇 |
1997年 | 9篇 |
1996年 | 9篇 |
1995年 | 11篇 |
1994年 | 17篇 |
1993年 | 16篇 |
1992年 | 11篇 |
1991年 | 18篇 |
1990年 | 12篇 |
1989年 | 19篇 |
1988年 | 20篇 |
1987年 | 20篇 |
1986年 | 20篇 |
1985年 | 12篇 |
1984年 | 13篇 |
1983年 | 9篇 |
1982年 | 8篇 |
1981年 | 11篇 |
1980年 | 7篇 |
1979年 | 11篇 |
1978年 | 15篇 |
1977年 | 6篇 |
1976年 | 8篇 |
1975年 | 8篇 |
1974年 | 10篇 |
1973年 | 11篇 |
1972年 | 11篇 |
1971年 | 6篇 |
1970年 | 11篇 |
1969年 | 8篇 |
1967年 | 6篇 |
排序方式: 共有759条查询结果,搜索用时 0 毫秒
651.
On War’s unfinished state has been a source of difficulties for interpretation for 180 years. By establishing a hierarchy of revision among the parts, we propose a criterion that can bring any part of On War in line with the most advanced stage of Clausewitz’s thinking. We exemplify the utility, illustrate the underpinnings and appreciate the potential of this criterion. We argue that the criterion offers the prospect of a shared, coherent, fully consistent and faithful rendering of Clausewitz’s theory of war. 相似文献
652.
Wallace J. Thies 《战略研究杂志》2013,36(4):51-76
Does proliferation increase the risk of war between new nuclear powers? Two schools of thought ‐ proliferation pessimists and optimists ‐ offer very different answers. The former stress the first‐strike danger of nuclear‐armed ballistic missiles and the resulting crisis instability as a cause of preemptive war. The latter stress the caution‐inducing effects of nuclear warheads and fear of retaliation as a check on would‐be attackers. To bridge the gap between these two schools, Daniel Ellsberg's concept of critical risk is used to show how the likelihood of war changes as new nuclear powers enlarge and improve their missile forces. Ellsberg's framework suggests that the danger of war is low between recent proliferators but rises as nuclear stockpiles grow, thereby changing the payoffs associated with striking first or striking second and increasing the danger of war due to accidents, miscalculations, and uncontrollable interactions between rival nuclear forces. Ellsberg's framework also suggests that the transition from weaponization to secure second strike force is likely to be long and difficult, in part because short‐range missiles like India's Prithvi are better suited to strike first than to strike second, and in part because negative control procedures reduce the value of striking second, thereby increasing the attraction of a preemptive strike. 相似文献
653.
Richard J Shuster 《战略研究杂志》2013,36(2):229-256
The discovery and elimination of Iraq's alleged weapons of mass destruction (WMD) was a focal point of the Coalition's strategy and operations in the aftermath of Operation ‘Iraqi Freedom’. Despite the failure of the WMD mission to meet expectations after almost two years of intensive operations, the Iraq Survey Group (ISG) was able to integrate multinational and multi-agency forces to provide detailed intelligence regarding the history of Iraq's WMD programs and to assist in the battle against insurgents. The ISG's experience raises the question of whether a standing intelligence force could become a key component in future counterproliferation and counterterrorism efforts around the world.1 相似文献
654.
655.
656.
657.
Steven J. Childs 《Defense & Security Analysis》2012,28(4):343-359
With the burgeoning influence of emerging markets in Asia, a tectonic shift is taking place in the global security landscape. Asian states are concomitantly arming as their economic clout grows. In light of these developments, security analysts would benefit from a formal means of placing these arms acquisitions in a structural context. Are arms acquisitions on par with the expectations of Asian states, given their structural dispositions, or are recent acquisitions beyond anticipated levels? By using a dynamic panel regression of 187 states from 1950 to 2011, this research predicts arms import volume using the degree of interstate arms linkages, the size of a state's military, and its level of economic development. The technique offers analysts a formal means of distinguishing orthodox behavior in importing conventional weapons from extraneous security motivations. The article concludes by generating near-term forecasts of Asian arms imports and discussing the implications of the technique. 相似文献
658.
659.
This paper addresses a two‐machine open shop scheduling problem, in which the machines are not continuously available for processing. The processing of an operation affected by a non‐availability interval can be interrupted and resumed later. The objective is to minimize the makespan. We present two polynomial‐time approximation schemes, one of which handles the problem with one non‐availability interval on each machine and the other for the problem with several non‐availability intervals on one of the machines. Problems with a more general structure of the non‐availability intervals are not approximable in polynomial time within a constant factor, unless . © 2005 Wiley Periodicals, Inc. Naval Research Logistics, 2006 相似文献
660.
The reoptimization procedure within the shifting bottleneck (SB) involves reevaluation of all previously scheduled toolgroup subproblems at each iteration of the SB heuristic. A real options analysis (ROA) model is developed to value the option to reoptimize in the SB heuristic, such that reoptimization only occurs when it is most likely to lead to a schedule with a lower objective function. To date, all ROA models have sought to value options financially (i.e., in terms of monetary value). The ROA model developed in this paper is completely original in that it has absolutely no monetary basis. The ROA methodologies presented are shown to greatly outperform both full and no reoptimization approaches with respect to both computation time and total weighted tardiness. © 2006 Wiley Periodicals, Inc. Naval Research Logistics, 2006 相似文献