分布式库存系统策略探讨与仿真

如何解决供需不平衡,实现供应链中成本与服务水平的协调控制是研究的一个重要问题,分布式库存系统的实施关键在于决策持有多少库存以及需求到达时库存缺乏如何处理。以具有自主决策权的几个零售商为对象,研究其库存转移状况,以及成本与服务水平,通过建立库存调拨模型,提出了三种调拨策略,包括自私型调拨策略,合作型调拨策略,混合型调拨策略,并根据这三种策略运用Anylogic软件进行仿真,分析比较三种策略的有效性,以得到最优结果。

Abstract：

The key point of the study is how to solve the imbalance of supply and demand, and how to coordinate the cost and service level in the supply chain. To solve the key problems in implementing the multi-location inventory system which lie in deciding how many items to hold at each retailer and how to deal with if there is a demand for an item at a retailer that has none of them in stock. A few independent decision-making retailers are the main research objects. It was targeted to study the transfer of their inventory status, as well as the costs and service levels, and through the establishment of inventory transshipment model, three transshipment strategies, including self-based strategy, cooperation-based strategy, hybrid strategy, were suggested. Then the software of Anylogic was adopted to simulate, analyze and compare the effectiveness of the three strategies in order to obtain optimal results.     

PWR蒸汽发生器中一、二次汽水分离器加装挡水器研究

在水－空气实验台架上，对PWR蒸汽发生器中一次汽水分离器和一、二次水分离器加装挡水器进行了一系列实验研究，实验表明，在循环倍率不大的条件下，一、二次汽水分离器加装档水器，可降低汽水分离器的上携带，挡水器的集水效果与挡水器的轴向位置有关。     

Distributed link scheduling method with physical interference model in wireless multi-hop networks

To further increase the throughput of wireless multi-hop networks,a distributed scheduling method is proposed,which takes physical interference model into account.It is assumed that nodes in the network can perform physical carrier sensing,and the carrier sensing range can be set to different values.In the traditional carrier sensing mechanism,the carrier sensing range is computed under the protocol interference model,which is not accurate.Here the optimal carrier sensing range with physical interference model is achieved.Each sending node implements the distributed approach in three phases at each time slot,and all the concurrent transmissions are interference free.Good performance can be achieved under this scheduling approach.The approximation ratio of the distributed method to the optimal one is also proved.     

带可变的分布式延时的高阶Cohen-Grossberg神经网络的动力学行为分析(英文)

对于高阶和低阶CGNN的工作前人做了很多,其中论及的网络都属于文章中讨论的高阶Cohen-Grossberg神经网络的某种特殊情况.讨论了此类网络平衡点的存在性和稳定性.引理2给出了系统(3)何时有平衡点的一个判断,定理1和定理2则讨论了不同条件下引理中平衡点的稳定性.每一个引理和定理都有简单的式子便于计算和判断.研究的带有可变的分布式延时的Cohen-Grossberg神经网络的平衡点的存在性和稳定性的结果具有普遍的意义,可以用于一大类CGNN的平衡点存在性和稳定性的判定上.     

分布式结构及其使用技术的研究

研究分布式结构的相关理论，给出分布式结构的涵义，讨论分布式结构的优点与商业效益，并研究分布式结构所使用的技术要点．     

Universal Distributed Estimation Scheme for a Bandwidth Constrained Ad Hoc Sensor Network

This paper describes a distributed estimation scheme (DES) for a bandwidth constrained ad hoc sensor network.The DES is universal in the sense that operations on all sensors are identical and independent of noise distribution.The scheme requires each sensor to transmit just a 1-bit message per observation.Simulation results show that the scheme achieves much better mean-squares error (MSE) performance than the simplified isotropic universal DES and even outperforms the isotropic universal DES which requires more than twice the bandwidth of this scheme.     

基于 PRO/E 的风力发电机叶片复杂曲面建模

以涡流理论为基础,基于点坐标的空间几何变换理论,按照风力发电机叶片设计的实际过程,对风力发电机叶片的空间截面坐标进行求解,提出了一种通用设计方法,并运用 PRO/E 软件,实现了风力发电机叶片三维实体的精确建模.该方法对于风机的优化建模具有指导意义.     

一种水泥生料中子分析装置的设计

本文应用D-D中子发生器作中子源,用铅作伽马射线防护材料,设计出一种水泥生料中子分析装置。利用该装置进行了水泥生料的检测,计算出的CaO、SiO2、Fe2O3和Al2O3质量百分含量精度分别达到0.40%、0.40%、0.50%和0.50%,满足水泥生料检测的要求。     

IEEE802.16 Mesh协同分布式模式下的延迟性能分析

为了更好地对IEEE802.16 Mesh协同分布式模式下的网络时延进行评估,利用已有的随机分布式模型,在介绍了IEEE802.16 Mesh的MAC帧格式的基础上,对接入延迟和3次握手的延迟进行了性能分析和仿真分析。分析结果表明,随着回退时隙数量的增加,MSH-DSCH消息的接入延迟和3次握手延迟会增加,仿真结与理论分析结果相同。     

虚拟网络马拉松系统通信协议及关键技术研究

虽然分布式虚拟环境及其各种技术已发展成熟,但其在电子竞技领域的应用尚不多见。将分布式虚拟环境技术应用到电子竞技领域的＂虚拟网络马拉松＂系统中,描述了虚拟化电子竞技系统的特点和通信协议设计准则,讨论了相关的一些关键技术的实现,包括标准性、公平性、通信开销和自愈合性,在此基础上设计并实现了虚拟网络马拉松系统网络通信协议VNMCP。

Abstract：

Although technologies on Distributed Virtual Environment （DVE） have been well-developed in recent years,they are rarely applied to E-Sports systems. DVE technologies with the Virtual Networked Marathon System in the E-Sports area were integrated. The characters of E-Sports and design principles of E-Sports communication protocols were described,and the implementation of some key technologies was discussed,including standardization,fairness,overhead and self-healingness. The Virtual Networked Marathon Communication Protocol （VNMCP） was proposed and implemented.