全文获取类型
收费全文 | 879篇 |
免费 | 19篇 |
出版年
2021年 | 11篇 |
2019年 | 18篇 |
2018年 | 8篇 |
2017年 | 19篇 |
2016年 | 17篇 |
2015年 | 16篇 |
2014年 | 18篇 |
2013年 | 161篇 |
2012年 | 8篇 |
2010年 | 9篇 |
2009年 | 14篇 |
2007年 | 16篇 |
2006年 | 9篇 |
2005年 | 10篇 |
2004年 | 13篇 |
2003年 | 11篇 |
2002年 | 14篇 |
2000年 | 8篇 |
1999年 | 9篇 |
1998年 | 17篇 |
1997年 | 14篇 |
1996年 | 13篇 |
1995年 | 7篇 |
1994年 | 21篇 |
1993年 | 23篇 |
1992年 | 15篇 |
1991年 | 21篇 |
1990年 | 15篇 |
1989年 | 28篇 |
1988年 | 25篇 |
1987年 | 22篇 |
1986年 | 26篇 |
1985年 | 19篇 |
1984年 | 11篇 |
1983年 | 10篇 |
1982年 | 15篇 |
1981年 | 14篇 |
1980年 | 11篇 |
1979年 | 16篇 |
1978年 | 18篇 |
1977年 | 7篇 |
1976年 | 11篇 |
1975年 | 9篇 |
1974年 | 15篇 |
1973年 | 10篇 |
1972年 | 12篇 |
1971年 | 11篇 |
1970年 | 14篇 |
1969年 | 10篇 |
1967年 | 10篇 |
排序方式: 共有898条查询结果,搜索用时 15 毫秒
801.
802.
803.
804.
805.
It is proposed to describe multiple air-to-air combat having a moderate number of participants with the aid of a stochastic process based on end-game duels. A simple model describing the dominant features of air combat leads to a continuous time discrete-state Markov process. Solution of the forward Kolmogorov equations enables one to investigate the influence of initial force levels and performance parameters on the outcome probabilities of the multiple engagement. As is illustrated, such results may be useful in the decision-making process for aircraft and weapon system development planning. Some comparisons are made with Lanchester models as well as with a semi-Markov model. 相似文献
806.
807.
This paper describes an approximate solution procedure for quadratic programming problems using parametric linear programming. Limited computational experience suggests that the approximation can be expected to be “good”. 相似文献
808.
Andrew J. Clark 《海军后勤学研究》1972,19(4):621-650
Contained herein is an informal nonmathematical survey of research in multi-echelon inventory theory covering published results through 1971. An introductory section defines the term, “multi-echelon,” and establishes the kinds of problems involving multi-echelon considerations. Subsequent sections provide surveys of research on deterministic and stochastic multi-echelon inventory control problems, allocation models, and multi-echelon planning and evaluation models. A final section discusses the present state of the art and suggests directions for future research. A bibliography of papers concerning multi-echelon inventory theory and applications is included. 相似文献
809.
This paper considers sequential test procedures to decision problems where there exists time delays in obtaining observations. 相似文献
810.
This paper describes a technique for the calculation of the probability that a helicopter can lift a specified load, or number of loads with a specified frequency distribution, in a given geographical region. This probability is computed by determining the bivariate altitude-temperature probability distribution for the specified region. The payload capability at any given temperature and altitude is calculated from standard performance equations. By integrating this over the altitude-temperature distribution, it is possible to obtain the probability distribution of payload capability, from which the required probabilities of lifting specific loads can be determined. 相似文献