共查询到18条相似文献，搜索用时 156 毫秒
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在实际物流配送流程中,物流企业(配送中心)对同一零售商往往在一定时期内多次供货.针对此现象,在固定建设成本LMRP模型研究基础上,从优化角度将模型扩展为考虑下游配送次数的LMRPVCC选址-库存问题.利用EOQ经济订货批量模型,计算零售商最优订货量与最优配送次数,得出包括订货成本、运输成本、零售商处的平均库存成本在内的零售商运作成本函数.结合粒子群算法特点与构建模型的特征,设计了修正粒子群算法对Daskin文中的49与88节点算例求解,并利用运输成本系数与建设成本系数对模型进行敏感性分析. 相似文献
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为了解决传统方法忽略惩罚成本、易腐蚀性产品损失等配送成本,导致路径优化结果较差的弊端,通过建立双层规划模型研究冷链物流配送开放式车辆路径优化方法。将物流中心选址看作决策目标建立上层规划模型,考虑固定成本、运输成本、惩罚成本及损失成本之和最小,建立冷链物流配送车辆路径优化下层规划模型。通过上层规划模型设定初始配送中心选址方案,在此基础上,通过下层规划模型完成配送开放式车辆路径优化,反复调整,通过上下层规划模型的相互作用达到冷链物流配送开放式车辆路径优化的目的。针对上层规划模型的决策变量进行染色体编码,获取最优解,针对下层规划模型通过粒子群算法进行求解。实验结果表明,所提方法路径优化结果成本最低,可行性最高。 相似文献
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与发达国家相比,我国农产品冷链物流浪费严重,不仅白白消耗了大量劳动力,也白白浪费了土地、水、肥料等自然资源,同时也降低了国内、国际竞争力。本文从冷链库存量、冷链保管、运输与配送时间、冷链投资、温度控制等角度梳理分析了冷链农产品变质损耗的影响因素,并指出了控制变质损耗的发展趋向。最后,以新旧动能转化视角,进一步揭示生鲜品变质损耗影响因素的变化规律,为冷链物流实践提供支撑；利用大数据和运筹学技术,对生鲜品需求和库存配送做出科学预测和优化决策；加大仓储保鲜和冷链配送投入,延长保鲜期并减缓腐损率；采用专业的仓储配送中心,在联盟合作中实现节能降耗和互利共赢四个方面,提出了控制农产品变质损耗的发展对策。 相似文献
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配送中心选址问题的研究在物流价值不断被关注的经济时代,越来越得到企业的重视。本文对A集团福建公司配送中心选址问题的研究,创新的采用了定性和定量相结合的方法,并以配送成本、仓库管理成本、仓库建设成本的总和最小的原则,最终确定了该公司的配送中心选址方案。本文的研究结果,可对A集团福建公司以后的配送中心建立提供参考。同时,通过理论的支持和模型的建立,也为A集团其他省市分公司及同类企业配送中心选址问题提供了新的参考意见和方法。 相似文献
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AHP在医药批发企业物流配送中心选址中的应用研究 总被引：1，自引：0，他引：1
通过运用AHP层次分析法,结合医药行业的特点以及医药批发企业物流配送实际情况建立了医药批发企业物流配送中心选址模型。该模型比较符合现实的医药企业配送中心的选址问题,从而降低医药企业物流成本,提高物流效率。 相似文献
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RFID技术在医药领域的应用主要是对发展中国家非法生产的假冒伪劣药品进行识别。我公司致力于研究开发此项技术,以确保在假冒伪劣药品流入市场初期便被识别,以便阻断其继续买卖交易的渠道,保证药品质量安全。客户可通过批量读取技术（Bulk-reading technology）快速读取成批药品的数据。贴于药品包装上的ID标签可记录并显示从药品生产开始直到被患者服用全过程的数据,如药品在运输途中的温度及药品在运输途中是否受到震荡及损坏。这样既保证了患者的生命安全又保证了药品的质量安全。此项技术已被德国许多家药店运用于监控药品。虽然RFID技术与Barcode技术的竞争从未停止过,我们却更倾向于使用RFID技术。其防篡改,防金属化学污染,可批量读取并支持多项传感器的优点受到广泛青睐。RFID技术确保了药品的安全及真实性,我们（XQSService）是此项技术运用在医药领域的先驱者,我们提供专业软件支持,客户包括药品生产商,批发商及药房。 相似文献
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随着RFID技术的快速发展和在图书馆的广泛应用,其对图书馆的影响日益深刻。本文通过将RFID相关技术分类聚类,对国内RFID技术的专利数据进行比对,分析和研究了RFID技术的集中度、技术发展方向、潜在技术发展点,试图建立起RFID技术在不同发展方向上的生长周期模型,为图书馆进行RFID技术研究以及进一步应用提供支持和参考。 相似文献
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Radio Frequency Identification, or RFID, is a technology which has been receiving considerable attention as of late. It is
a fairly simple technology involving radio wave communication between a microchip and an electronic reader, in which an identification
number stored on the chip is transmitted and processed; it can frequently be found in inventory tracking and access control
systems. In this paper, we examine the current uses of RFID, as well as identifying potential future uses of the technology,
including item-level tagging, human implants and RFID-chipped passports, while discussing the impacts that each of these uses
could potentially have on personal privacy. Possible guidelines for RFID’s use, including Fair Information Principles and
the RFID Bill of Rights are then presented, as well as technological solutions to personal privacy problems, such as tag killing
and blocker tags, as well as simple aluminum foil shields for passports. It is then claimed, though, that guidelines and technological
solutions will be ineffective for privacy protection, and that legislation will be necessary to guard against the threats
posed by the RFID. Finally, we present what we believe to be the most important legislative points that must be addressed.
Vance Lockton has recently completed the M.Sc. program at the University of British Columbia, majoring in Computer Science.
Richard S. Rosenberg is a professor emeritus in the Department of Computer Science at the University of British Columbia;
the third edition of his book, “The Social Impact of Computers”, was published by Elsevier Academic Press in 2004. 相似文献
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图书馆图书乱架问题由来已久,现有解决方案多为临时应急办法,并不能从根本上彻底解决问题的存在。为彻底解决图书馆乱架问题,根据RFID技术特点,利用C#和SQL Sever2008,设计了一个基于RFID的图书馆智能书架系统。该系统硬件主要由频率为920MHz的UHF电子标签、RFID读取器、天线组成,软件系统包含书库检查和乱架检查两大部分,能够实现对在架、外借图书的清点、统计工作。通过RFID读取器读取电子标签信息,并将结果与数据库进行比对,从而检查并找出乱架图书以及相对应的正确架位。经过测试,结果表明该系统运行稳定,数据读取精确度较高,查找、比对结果达到预期目的,在实际工作中既可以节省人力,又可以提高工作效率。 相似文献
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Auto identification and data capture (AIDC) technologies, such as radio frequency identification (RFID) has been promising for real time traceability, communication, identification and location of goods, assets and people. Despite this promising trend, health care sector has not fully embraced RFID technology. The purpose of this study is to understand how RFID technology can be beneficial for meeting hospital real time asset and people management information requirements prior to adoption of the technology. 相似文献
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Radio Frequency Identification (RFID) technology promises many benefits to business process automation with real-time context awareness and item level accuracy. Through readers to RFID middleware systems, the information and the movements of tagged objects can be used to trigger business transactions. With the aim to seamlessly incorporate RFID technology into business process automation, this paper investigates the deployment of business logics to RFID edge systems. A comprehensive framework is proposed to model business rules in an event-driven perspective on the basis of event calculus. This framework first elicits the business meaningful events from the large volume of raw RFID reads, and guides the behaviours and interactions of involved objects in response to the elicited events and the pre-defined business rules. The execution and functional invocations are enforced with RFID queries, where a two-block buffering mechanism is proposed to handle the identified delayed effects and thereby improve the RFID query efficiency. Experiments and analysis are conducted to discuss the query efficiency improvements and the scalability to more complex applications. 相似文献