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351.
信息化战争已经登上了当今世界的舞台,这是军事领域发生的革命性变化。在信息化战争条件下,传统的战争制胜机理发生的新的变化。 相似文献
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李军廷 《中国人民武装警察部队学院学报》2014,(6):67-69
消防业务信息系统日常运维任务是确保实时数据的可用性和完整性,信息能够得到及时处理应用,保障信息系统的正常运行及维护系统资源的安全.加强消防业务系统日常运维的管理标准,规范运维工作的方法,可以减少系统运维中不确定性因素,是提高消防业务工作质量和水平的重要保障. 相似文献
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李振华 《中国人民武装警察部队学院学报》2014,(7):68-71
网络信息管理是新形势下部队管理工作的一项重要内容,对于促进官兵全面发展、加强部队行政管理、提升信息化建设具有重要意义,加强部队网络信息管理必须遵循共享与防范相结合、标本兼治和网络信息技术与官兵素质同步提高规律,从组织领导、官兵思想、安全防护、制度落实和网管人员建设五个方面构筑部队网络信息管理有效策略. 相似文献
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We consider a three‐layer supply chain with a manufacturer, a reseller, and a sales agent. The demand is stochastically determined by the random market condition and the sales agent's private effort level. Although the manufacturer is uninformed about the market condition, the reseller and the sales agent conduct demand forecasting and generate private demand signals. Under this framework with two levels of adverse selection intertwined with moral hazard, we study the impact of the reseller's and the sales agent's forecasting accuracy on the profitability of each member. We show that the manufacturer's profitability is convex on the reseller's forecasting accuracy. From the manufacturer's perspective, typically improving the reseller's accuracy is detrimental when the accuracy is low but is beneficial when it is high. We identify the concrete interrelation among the manufacturer‐optimal reseller's accuracy, the volatility of the market condition, and the sales agent's accuracy. Finally, the manufacturer's interest may be aligned with the reseller's when only the reseller can choose her accuracy; this alignment is never possible when both downstream players have the discretion to choose their accuracy. © 2014 Wiley Periodicals, Inc. Naval Research Logistics 61: 207–222, 2014 相似文献
358.
We consider the problem of assessing the value of demand sharing in a multistage supply chain in which the retailer observes stationary autoregressive moving average demand with Gaussian white noise (shocks). Similar to previous research, we assume each supply chain player constructs its best linear forecast of the leadtime demand and uses it to determine the order quantity via a periodic review myopic order‐up‐to policy. We demonstrate how a typical supply chain player can determine the extent of its available information in the presence of demand sharing by studying the properties of the moving average polynomials of adjacent supply chain players. The retailer's demand is driven by the random shocks appearing in the autoregressive moving average representation for its demand. Under the assumptions we will make in this article, to the retailer, knowing the shock information is equivalent to knowing the demand process (assuming that the model parameters are also known). Thus (in the event of sharing) the retailer's demand sequence and shock sequence would contain the same information to the retailer's supplier. We will show that, once we consider the dynamics of demand propagation further up the chain, it may be that a player's demand and shock sequences will contain different levels of information for an upstream player. Hence, we study how a player can determine its available information under demand sharing, and use this information to forecast leadtime demand. We characterize the value of demand sharing for a typical supply chain player. Furthermore, we show conditions under which (i) it is equivalent to no sharing, (ii) it is equivalent to full information shock sharing, and (iii) it is intermediate in value to the two previously described arrangements. Although it follows from existing literature that demand sharing is equivalent to full information shock sharing between a retailer and supplier, we demonstrate and characterize when this result does not generalize to upstream supply chain players. We then show that demand propagates through a supply chain where any player may share nothing, its demand, or its full information shocks (FIS) with an adjacent upstream player as quasi‐ARMA in—quasi‐ARMA out. We also provide a convenient form for the propagation of demand in a supply chain that will lend itself to future research applications. © 2014 Wiley Periodicals, Inc. Naval Research Logistics 61: 515–531, 2014 相似文献
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针对星间链路信号动态范围大、捕获时间要求短之间的矛盾,提出了一种捕获初始信息的求解算法。该算法基于导航星座的星历资源和动态特性,采用迭代的方法对信号传输时延和多普勒频率进行估计。分析指出,该算法实现过程简单,收敛速度快,估计精度高,两次迭代即可实现时延估计精度达到纳秒级,大大降低了捕获实现的难度和复杂度,适合星上资源要求比较严格的场合。分析基于北斗导航星座模型展开,对我国北斗导航星间链路的设计提供了参考。 相似文献
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防空作战是大型水面舰艇编队的主要作战样式之一。运用PEPA(性能评价过程代数)方法对舰艇编队防空作战全过程进行有效建模,形式化描述了预警探测、情报传递、命令下达、防空拦截等作战主要过程。建立的PEPA模型具有层次化结构,考虑了要素间相互协作,体现了编队防空作战分布、并发的特点。通过对建立的PEPA模型进行性能指标选择和稳定状态分析,得到了不同因素对编队能力发挥的影响情况,获得了防空作战的基本要素组成,从而提供了一种解决舰艇编队问题的新方法。 相似文献