全文获取类型
收费全文 | 177篇 |
免费 | 36篇 |
国内免费 | 3篇 |
出版年
2023年 | 1篇 |
2022年 | 1篇 |
2021年 | 4篇 |
2020年 | 4篇 |
2019年 | 1篇 |
2018年 | 3篇 |
2017年 | 4篇 |
2016年 | 1篇 |
2015年 | 6篇 |
2014年 | 12篇 |
2013年 | 6篇 |
2012年 | 3篇 |
2011年 | 4篇 |
2010年 | 10篇 |
2009年 | 13篇 |
2008年 | 5篇 |
2007年 | 13篇 |
2006年 | 3篇 |
2005年 | 7篇 |
2004年 | 6篇 |
2003年 | 9篇 |
2002年 | 10篇 |
2001年 | 13篇 |
2000年 | 4篇 |
1999年 | 17篇 |
1998年 | 8篇 |
1997年 | 10篇 |
1996年 | 11篇 |
1995年 | 4篇 |
1994年 | 4篇 |
1993年 | 3篇 |
1992年 | 5篇 |
1991年 | 1篇 |
1990年 | 4篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1986年 | 3篇 |
排序方式: 共有216条查询结果,搜索用时 15 毫秒
121.
122.
文中论述了运用微型计算机(IBM-PC)进行复合材料强度准则研究的方法,包括强度包络线绘制、双向加载数据采集及实验数据处理等,同时还研究了如何确定双向试验中的破坏载荷值,并在分析实例中提供了较详细的数据。 相似文献
123.
坦克分队在进攻战斗中的最佳火力分配 总被引:1,自引:0,他引:1
运用兰切斯特方程和极值理论就坦克分队在进攻战斗中如何分配火力及使火力分配最佳进行了研究。给出了最佳方案的计算方法 相似文献
124.
125.
126.
通过空间矢量法 ,推导出在舰载武器系统中由于垂直惯性基准零位安装误差所引入的坐标变换误差的解析式 ,并给出了误差校正公式 相似文献
127.
Inventory control of products with finite lifetimes is important in many modern business organizations. It has been an important and difficult research subject. Here, we study the (s, S) continuous review model for items with an exponential random lifetime and a general renewal demand process through a Markov process. We derive a fundamental rate conservation theorem and show that all the other system performance measures can be obtained easily through the expected reorder cycle length. This leads to a simple expression for the total expected long run cost rate function in terms of the expected reorder cycle length. Subsequently, we derive formulas for computing the expected cycle lengths for the general renewal demand as well as for a large class of demands characterized by the phase type interdemand time distribution. We show analytically when the cost as a function of the reorder level is monotone, concave, or convex. We also show analytically that, depending on the behavior of the expected reorder cycle, the cost as a function of the order‐up level is either monotone increasing or unimodal. These analytical properties enable us to understand the problem and make the subsequent numerical optimization much easier. Numerical studies confirm and illustrate some of the analytical properties. The results also demonstrate the impact of various parameters on the optimal policy and the cost. © 1999 John Wiley & Sons, Inc. Naval Research Logistics 46: 39–56, 1999 相似文献
128.
129.
Efficient budget allocation strategies for elementary effects method in stochastic simulation 下载免费PDF全文
This paper focuses on extending the Morris' elementary effects method (MM) for sensitivity analysis/factor screening originated in the context of deterministic computer experiments to the stochastic simulation setting. Given a fixed simulation budget to expend, the main objective is to provide efficient and accurate estimates of main and interaction (or nonlinear) effects coined by the standard MM for characterizing the importance of each factor, despite the impact of simulation errors. Taking into account both the factor/input sampling uncertainty rooted in MM and the random errors inherent in a stochastic simulation, we develop efficient budget allocation strategies for implementing MM in this new context. Under each strategy proposed, we derive its corresponding optimal budget partition and optimal budget allocation rules. Numerical results corroborate the practical effectiveness of the proposed budget allocation strategies. 相似文献
130.