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501.
丁红 《兵团教育学院学报》2011,21(4):23-29
作为传统媒体之一的报纸媒体,一直承担着信息传播的重要任务,在社会生活中起着重要作用。面临新媒体高速崛起,多媒体的日渐融合这样的环境,也仍然不能忽视报纸媒体的影响力。但是,在高速发展的信息社会中,报纸媒体的创意与策划显得越来越重要。 相似文献
502.
分析了小采样周期条件下“当前”统计模型、基于速度估计的自适应模型及自适应常加速度模型,对3种模型的稳态性能和动态性能进行了分析比较,并对3种模型的机动目标跟踪效果进行了仿真。仿真结果表明:小采样周期条件下,3种模型的稳态跟踪性能一致,而在动态跟踪条件下自适应加速度模型性能更优。 相似文献
503.
We study a supply chain in which a manufacturer relies on a salesperson to sell the products to the consumers. The sales outcome is determined by a random market condition and the salesperson's service level, both of which are privately observed by the salesperson. Apart from them, there are two types of resellers: a knowledgeable reseller observes the market condition, whereas a diligent reseller can monitor the service level. While delegating to a reseller enhances information acquisition, it may also result in double marginalization and inefficiency. We identify several operating regimes in which double marginalization can be eliminated via simple contracts and establish the benefit of monitoring the salesperson over monitoring the market. Our dominance result is not prone to our model characteristics regarding the complementarity of market condition and sales effort, the relative importance of adverse selection and moral hazard, and the contract form. We then generalize our model and re‐establish the dominance result in the presence of reseller's risk aversion or private monitoring expertise. We also quantify the performance gaps among different selling schemes under various scenarios. © 2011 Wiley Periodicals, Inc. Naval Research Logistics, 2011 相似文献
504.
We consider a class of facility location problems with a time dimension, which requires assigning every customer to a supply facility in each of a finite number of periods. Each facility must meet all assigned customer demand in every period at a minimum cost via its production and inventory decisions. We provide exact branch‐and‐price algorithms for this class of problems and several important variants. The corresponding pricing problem takes the form of an interesting class of production planning and order selection problems. This problem class requires selecting a set of orders that maximizes profit, defined as the revenue from selected orders minus production‐planning‐related costs incurred in fulfilling the selected orders. We provide polynomial‐time dynamic programming algorithms for this class of pricing problems, as well as for generalizations thereof. Computational testing indicates the advantage of our branch‐and‐price algorithm over various approaches that use commercial software packages. These tests also highlight the significant cost savings possible from integrating location with production and inventory decisions and demonstrate that the problem is rather insensitive to forecast errors associated with the demand streams. © 2011 Wiley Periodicals, Inc. Naval Research Logistics, 2011 相似文献
505.
506.
张鸿 《武警工程学院学报》2011,(1):8-10
军队落实科学发展观,尤其是把以人为本作为建军治军的重要理念,就必须做到在部队建设中认识人、尊重人、依靠人、服务人、发展人。做到深知兵,坚持从群众中来、到群众中去的工作路线,切实维护好广大官兵的合法权益、切身利益,尊重官兵的身心发展规律,促进官兵的全面发展。 相似文献
507.
姜红 《中国人民武装警察部队学院学报》2014,(4):45-47
近年来,大型水上游乐场所在全国各地拔地而起,由于其建筑使用功能的需要和造型设计的独特性,普遍存在防火分区面积超规的问题。以某水公园为例,阐述解决大型水上游乐场所防火分区面积超规问题的技术措施,证明利用性能化消防设计方法是解决此类大空间建筑防火设计的最佳方法。 相似文献
508.
用于软件雷达硬件平台的并行多路等效时间超高速ADC系统中,客观地存在着诸多不可避免的工作非均匀性,如:时基抖动、通道直流偏置不均衡及通道增益不一致等等,而造成取样输出信号的频谱发生畸变,影响雷达系统性能.综合讨论了由于采样非均匀和通道偏置及增益不一致对取样信号数字谱的影响,在矩形抽样和理想抽样情况下,建立了该信号数字频谱的完整数学模型,并以理想抽样的正弦信号为例进行详细分析,得到了采样系统输出信噪比的计算公式,为系统的后续补偿校正,及对软件雷达系统指标的确定与分配提供了参考和依据. 相似文献
509.
周虹 《中国人民武装警察部队学院学报》2007,23(12):71-73
对目前消防行政诉讼的主要特征进行了综述,通过具体案例对消防行政诉讼中存在的热点问题及消防行政执法中存在的相关问题进行了分析,提出了加强消防机构应诉能力的几点建议。 相似文献
510.
We consider three network disconnection problems in a centralized network where a source node provides service to the other nodes, called demand nodes. In network disconnection problems, each demand node gets a certain benefit when connected to a source node and a network attacker destroys edges to prevent demand nodes from achieving benefits. As destroying edges incurs expenses, an attacker considers the following three different strategies. The first is to maximize the sum of benefits of the disconnected nodes while keeping the total edge destruction cost no more than a given budget. The second is to minimize the total destruction cost needed to make a certain amount of benefits not accomplished. The last is to minimize the ratio of the total destruction cost to the benefits not accomplished. In this paper, we develop exact algorithms to solve the above three problems. © 2007 Wiley Periodicals, Inc. Naval Research Logistics, 2007 相似文献