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121.
对岸上线目标、面目标射击的效力评估 总被引:1,自引:0,他引:1
主要对岸上线目标、面目标进行间接射击时 ,射击效力指标 (相对毁伤目标长度或相对毁伤目标面积数学期望 )的计算进行了讨论。推导出在弹丸的毁伤半径和射击误差不变的情况下 ,毁伤长度或面积同目标长度之间的关系 ,以及相对毁伤长度或面积同目标长度之间的关系。 相似文献
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This article considers the preventive flow interception problem (FIP) on a network. Given a directed network with known origin‐destination path flows, each generating a certain amount of risk, the preventive FIP consists of optimally locating m facilities on the network in order to maximize the total risk reduction. A greedy search heuristic as well as several variants of an ascent search heuristic and of a tabu search heuristic are presented for the FIP. Computational results indicate that the best versions of the latter heuristics consistently produce optimal or near optimal solutions on test problems. © 2000 John Wiley & Sons, Inc. Naval Research Logistics 47: 287–303, 2000 相似文献
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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
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We formulate and solve a discrete‐time path‐optimization problem where a single searcher, operating in a discretized three‐dimensional airspace, looks for a moving target in a finite set of cells. The searcher is constrained by maximum limits on the consumption of one or more resources such as time, fuel, and risk along any path. We develop a specialized branch‐and‐bound algorithm for this problem that uses several network reduction procedures as well as a new bounding technique based on Lagrangian relaxation and network expansion. The resulting algorithm outperforms a state‐of‐the‐art algorithm for solving time‐constrained problems and also is the first algorithm to solve multi‐constrained problems. © 2010 Wiley Periodicals, Inc. Naval Research Logistics, 2010 相似文献
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在线自主航迹规划是无人机(Unmanned Aerial Vehicles,UAV)执行区域目标搜索任务的有效保证.针对UAV区域搜索中航迹规划的实时性要求,提出了一种固定搜索模式和动态搜索模式相结合的UAV自主航迹规划框架.在快速扩展随机树(RRT)方法的基础上,通过改进随机扩展树的节点选择和引入启发式信息,提出了基于改进RRT的UAV实时搜索航迹规划算法,该算法能够有效降低在线航迹规划的时间代价和扩展节点数.仿真实验结果验证了本文方法的有效性. 相似文献
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Ryusuke Hohzaki 《海军后勤学研究》2009,56(3):264-278
Search theory originates from the military research efforts of WWII. Most researchers of that period modeled their search games in noncooperative games, where players are enemies or compete against each other. In this article, we deal with a cooperative search game, where multiple searchers behave cooperatively. First we describe several search problems and discuss the possibility of a coalition or cooperation among searchers. For the cooperative search game, we define a function named quasi‐characteristic function, which gives us a criterion similar to the so‐called characteristic function in the general coalition game with transferable utility. The search operation includes a kind of randomness with respect to whether the searchers can detect a target and get the value of the target. We also propose a methodology to divide the obtained target value among members of the coalition taking account of the randomness. As a concrete problem of the cooperative search game, we take the so‐called search allocation game, where searchers distribute their searching resources to detect a target in a cooperative way and the target moves in a search space to evade the searchers. Lastly, we discuss the core of the cooperative search allocation game. © 2009 Wiley Periodicals, Inc. Naval Research Logistics, 2009 相似文献
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机降场选择是超视距垂直登陆作战的关键工作之一。针对机降场选择的决策特点,定义了不确定语言集结算子,建立了基于不确定语言型多属性群决策方法的机降场选择评估模型。该模型直观、简单,降低了对指挥员的专业素质要求,有效弥补了指挥员的主观判断误差,提高了评估决策可靠性,具有较高的应用价值。 相似文献