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研究一类具有阻尼项和连续分布滞量的二阶中立型偏微分方程解的振动性,通过利用Riccati变换,引入一类Φ(t,s,l)型的新函数,获得该类方程在Robin,Dirichlet边值条件下振动的充分判据. 相似文献
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The assignment of personnel to teams is a fundamental managerial function typically involving several objectives and a variety of idiosyncratic practical constraints. Despite the prevalence of this task in practice, the process is seldom approached as an optimization problem over the reported preferences of all agents. This is due in part to the underlying computational complexity that occurs when intra-team interpersonal interactions are taken into consideration, and also due to game-theoretic considerations, when those taking part in the process are self-interested agents. Variants of this fundamental decision problem arise in a number of settings, including, for example, human resources and project management, military platooning, ride sharing, data clustering, and in assigning students to group projects. In this article, we study an analytical approach to “team formation” focused on the interplay between two of the most common objectives considered in the related literature: economic efficiency (i.e., the maximization of social welfare) and game-theoretic stability (e.g., finding a core solution when one exists). With a weighted objective across these two goals, the problem is modeled as a bi-level binary optimization problem, and transformed into a single-level, exponentially sized binary integer program. We then devise a branch-cut-and-price algorithm and demonstrate its efficacy through an extensive set of simulations, with favorable comparisons to other algorithms from the literature. 相似文献
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Single‐commodity stochastic network design under demand and topological uncertainties with insufficient data 下载免费PDF全文
Stochastic network design is fundamental to transportation and logistic problems in practice, yet faces new modeling and computational challenges resulted from heterogeneous sources of uncertainties and their unknown distributions given limited data. In this article, we design arcs in a network to optimize the cost of single‐commodity flows under random demand and arc disruptions. We minimize the network design cost plus cost associated with network performance under uncertainty evaluated by two schemes. The first scheme restricts demand and arc capacities in budgeted uncertainty sets and minimizes the worst‐case cost of supply generation and network flows for any possible realizations. The second scheme generates a finite set of samples from statistical information (e.g., moments) of data and minimizes the expected cost of supplies and flows, for which we bound the worst‐case cost using budgeted uncertainty sets. We develop cutting‐plane algorithms for solving the mixed‐integer nonlinear programming reformulations of the problem under the two schemes. We compare the computational efficacy of different approaches and analyze the results by testing diverse instances of random and real‐world networks. © 2017 Wiley Periodicals, Inc. Naval Research Logistics 64: 154–173, 2017 相似文献
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文章阐述了分布式储能技术的重要意义,介绍了分布式储能技术在经济社会可持续发展重要领域——能源互联网发展中的重要地位,并对分布式储能的技术形态与载体进行了分析,最后以信息网络重要组成部分——数据中心为应用场景,对分布式储能技术的实践进行了探讨。 相似文献
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吴旭光 《武警工程学院学报》2014,(2):53-55
在云计算环境下,绝大多数信息处理和存储都被转移到云中心,用户终端的计算和存储能力将逐渐弱化。本文针对这一趋势,提出一种适用于云计算的多接收方代理重加密方案,充分利用云中心的分布式计算能力,使用随机数重用和密文聚合技术,大大降低了计算和传输负担,实验表明本方案具有较高的效率。 相似文献
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针对分布式星群网络业务通信QoS不高的问题,提出了一种基于流量均衡和跨层技术的分布式星群网络路由算法(TACA)。该算法首先通过跨层技术将物理层、MAC层的相关信息搜集起来,作为判断链路负载状况的依据;然后对不同类型的业务进行分类,根据链路负载状况和业务QoS级别选择不同的路由层次,从而均衡流量以提高QoS。仿真表明,该路由算法在一定程度上降低了星群的呼叫阻塞率和切换阻塞率,平衡了网络的负载,提高了网络吞吐量。 相似文献
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