无线传感网在库存管理中的应用研究

现阶段在我国的多数地方,库存管理仍然存在人工填单、人工记账等较落后的人工管理方式,为此提出了无线传感网在库存管理中的应用研究。介绍了无线传感网的优点,分析了库存管理的需求情况,设计了无线传感网在库存管理中的硬件结构、软件测试平台与实时查询过程,同时提出了无线传感网应用中应注重的安全措施。     

基于RFID的化工类产品仓储高效管理与实时安全监控的无线网络化综合系统研究

基于RFID技术、多类型监测(温度,湿度及各种类型的腐蚀性、爆炸性、有毒有害气体浓度的监测)集成传感器技术、无线及网络化通讯技术和计算机软硬件技术、管理技术,将它们有机整合实现对储存中化工产品的自动化高效管理与多安全性指标的实时监控,并能通过无线网络在全球范围内实时监管和查询。实现了对化工产品的出/入库自动控制、产品存放位置的精确快速确定及数量的精确快速统计和信息的快速查询。     

Market intermediaries,storage and policy reforms

Intermediaries play a crucial role in the functioning of agricultural and food markets in developing countries through linking production, imports and storage with consumption. We analyse how competition in the intermediary sector and alternative forms of intermediaries determine the incentives for storage and market outcomes more generally. We apply this framework to the Egyptian wheat sector as an illustrative case study, a country where food security is a priority, where both forms of intermediaries co-exist and undertake storage but where issues of reforms to the role of intermediaries have been raised. Through stochastic simulation, we analyse two changes in government policy: first, the effects of changing the policy instruments with both types of intermediaries undertaking storage; second, relating to market reforms where the private sector replaces the storage function of the parastatal. These issues have wider significance for addressing the interaction between food security and a wide range of policy reforms including de-regulation of parastatals in developing countries.     

协同学在多级库存系统分析中的应用初探

讨论了协同学的基本概念;特别讨论了绝热消去方法(伺服原理)在协同学方法论中的作用、地位和意义;并运用协同学处理问题的一般步骤分析了多级库存系统,得到了序参量方程和势函数。     

传统储运企业向现代物流企业转型的策略研究 --基于资源整合和核心能力

本文分析了国内外物流企业资源整合和核心能力的研究状况,提出了基于资源整合和核心能力是企业成功转型的关键,同时分析了我国传统储运企业向现代物流企业转型的优势与劣势,提出了转型的具体策略。     

Winners, Losers, and the Nuclear-Waste Dilemma

This paper explores how property-right assignment affects social efficiency when a public program has both “public good” and “public bad” components. We show that when willingness to accept a public bad exceeds the willingness to pay, the net benefit is unambiguously lower when the property right supports the status quo institutional structure. Thus, Kaldor–Hicks efficiency tests tend to favor public programs and mitigation over the status quo even when mitigation negatively affects another group. To illustrate the result, we develop social-cost estimates for moving nuclear waste from current temporary-storage facilities to a permanent central repository at Yucca Mountain, NV, USA. For a representative city with a population of 226,195, the present value of the external cost of shipping waste is $1.42 billion when those living near temporary nuclear-waste storage facilities are assigned the property right to “health and safety.” That number swells to $5.95 billion when those living near the transport route are assigned the property right. Thus, property-right assignment affects the efficient level of nuclear-waste, and thus nuclear energy, produced.     

论粮食产业化发展方向

本文从农村土地、农民的社会保障,依靠非农产业实现农民增收,以农业信息化促进农业现代化,农业产业化发展,改善政府对农业的宏观调控,城市化与农业结构调整等几个方面研究和探索了发展粮食产业化的发展方向。     

基于AHP的山东省粮食产业链竞争力评价

本文通过对山东省粮食产业发展的调查分析,运用AHP法建立了粮食产业链竞争力评价体系,并对山东省粮食产业链竞争力进行了定量分析和评价,为本省粮食产业链延伸提供决策依据。     

国际粮食价格是如何影响中国粮食价格的

在经济全球化背景下,我国国内粮食价格与国际粮食价格的关联性在不断增强。本文以1997年4月至Z012年3月国际国内粮食价格数据为样本,借助协整分析和VEC模型得知国际国内粮价存在长期稳定的同向波动关系,相对于国际整体粮价、大米、大豆、玉米和小麦波动1％,国内对应品种的粮价分别波动0．614％、0．413％、0．849％、0．576％和0．362％。整体上国际国内粮价存在1～5个月的传导时滞。贸易传导和信息诱发是国际粮价影响国内粮价的两种基本方式,当前国际价格首先借助贸易或汇率渠道的直接传导影响国内大豆价格,其后国内大豆价格借助替代效应等信息诱发渠道影响其他品种和整体粮价波动。从上述结论出发可以引申出对我国构建粮价预警机制、实现粮食安全目标的若干政策建议。     

基于实时解调的AIS信号侦察

针对日益增强的船舶自动识别系统（AIS）信号侦察需求,以实 时解调为主要侦察手段,结合采样数据存储,提出了一种通用的AIS信号侦察的FPGA设计方 案。通过乒乓操作、高精度计时器等设计,解决了AIS侦察的实时解调、标准时隙校准、高 精度时标等问题。试验结果验证了该设计的实用性。