零售产业通路费现象及我国公共政策的选择

国内外有关零售产业通路费是促进竞争还是限制竞争的争论存在重大分歧。这些分歧导致政府无法为通路费建立和实施一个明确的指导方针 ,而只能根据已有的反垄断法对具体的案例进行裁决。现阶段 ,我国通路费运作中存在许多问题 ,比如名目繁多 ,且收取过程中存在违法行为等等。因此 ,我国政府应加强调查研究 ,尽快制定相关法律规范通路费的运作     

基于共拣网络的货位优化方法

将社会网络和社区发现的思想引入物流中心仓库货位的优化。首先建立描述货物之间被共同拣选情况的自组织共拣网络;然后通过社区发现算法从共拣网络中识别那些在一次作业中可能会同时拣选的货物构成共拣品族:最后按共拣品族就近摆放的原则优化货位并将拣选频率较高的共拣品族置于距出货口较近的位置。     

物流中心仓库货位优化系统的设计研究

以上海医药物流中心仓库为研究对象，为其仓库货位优化系统建立一个有效的多目标优化数学模型。并引入“类聚”的方法来解决同一产品族的货物临近放置的问题。最后，应用多目标遗传算法进行货位优化。     

Carbon and energy prices under uncertainty: A theoretical analysis of fuel switching with heterogenous power plants

European power producers have a major influence on the EU ETS, given that both their CO₂ emissions and their EUA (European Union Allowance) allocations account for more than half of the total volumes of the scheme. Fuel switching is often considered as the main short-term abatement measure under the EU ETS. It consists in substituting combined cycle gas turbines (CCGTs) for hard-coal plants in power generation. Thereby coal plants run for shorter periods, and CO₂ emissions are reduced. This paper provides the first theoretical analysis of fuel switching, in a context where power plants involved are not equally efficient. We begin with a preliminary work using illustrative examples and sensitivity analyses, which enables us to observe how differences in the efficiency of power plants impact the cost of fuel switching, and how this is related to the level of switching effort. Based on this, we build a theoretical model taking into account the effect of differences in the efficiency of power plants involved in fuel switching. We also investigate the effect of the timing of fuel switching abatements, within the temporally defined environment of our dynamic model. Results demonstrate that the gas price and uncontrolled CO₂ emissions act together on the carbon price. We show that the influence of the gas price on the carbon price depends on the level of uncontrolled CO₂ emissions, due to heterogeneity of power plants that are used in the fuel switching process. Furthermore, we show that the time of occurrence of uncontrolled emissions matters so that shocks have a stronger impact when they occur in a period that is closed to the end of the phase.     

促进产业和谐发展的零供关系构建研究

零供关系对于产业发展至关重要。有关调查显示我国零供关系显失公平现象十分严重,已经危及到了整个产业链的和谐。零供矛盾的焦点主要集中在零售商收取不合理的通路费用和拖欠货款。大型零售商滥用自身市场优势追求利益最大化、过度依赖"渠道控制"盈利模式及对供应商依赖渠道资源存在认识偏差是导致零供冲突的主要原因。完善相关法律法规、健全社会诚信机制、签订以公平交易为基础的合同、建立合理的利益分配机制和信息共享机制,有助于构建和谐的零供关系,促进产业健康发展。     

大型零售商收取通道费合理吗?——来自信号传递模型的解释

文章对通道费的相关理论进行了总结,并通过一个包含批发价格和通道费的信号传递模型,分析了非对称信息下通道费的渠道结构优化机制。在零售商的销售成本充分高的情况下,通道费构成了不完全信息动态博弈中剔除劣战略均衡的合约安排的必要条件,能够有效地区别高市场需求和低市场需求的制造商。因此,通道费并不必然是零售商滥用市场势力的工具,在众多的情况下通道费为合理配置货架空间,优化商品流通渠道,以及调整制造商的产品结构提供了有效的信息甄别工具。     

超市通道费与相对优势地位法律规制若干问题探讨——四论“零供”关系的法律调整

超市通道费是近年来我国“零供”矛盾突出的焦点问题之一。其中对涉及超市（零售商）收取通道费是否滥用相对优势地位等问题存在不同看法。相对优势地位不是市场支配地位。应注意其他国家规制滥用相对优势地位行为的背景、使用条件以及各国的差异,结合我国实际情况,对实际经济活动中存在的不同情况采取有针对性的法律规制措施。对照依赖性、相对性、社会性等构成滥用优势地位的要件,电信格式合同规定过期电话卡余额不退还条款有滥用相对优势地位损害消费者利益之嫌疑,而大部分超市通道费案件显然是企业之间利益分配而不属于滥用优势地位之情形。应尽快建立大型零售商选址等相关配套制度,充分发挥行业协会作用,建立供应商与零售商谈判磋商机制,促进市场经济稳定、发展。     

零售商买方势力一定会导致通道费吗？--基于纵向市场结构的合作博弈分析

关于通道费的研究,有一种观点认为通道费是零售商买方势力的体现。但是现实经济中有些具有买方势力的零售商收取通道费,而另一些却不收取通道费,买方势力的观点不能对这一现象作出解释。针对此,构建双边双寡头的纵向市场结构模型,并在模型中引入零售商的价格竞争和服务竞争,在合作博弈的框架下分析研究了零售商买方势力与通道费之间的关系。研究发现买方势力并不是出现通道费的充分条件,而只是必要条件,通道费的出现与否除了与零售商买方势力有关外,还与其他的市场环境因素有关。最后,通过线性需求函数的特例对这一结论进行了验证,并在此基础之上提出了相应的规制政策建议。     

Slotting Fees for Organic Retail Products: Evidence From a Survey of U.S. Food Retailers

Based on a survey of U.S. food retailers, our study finds that almost one third of U.S. food retailers charge slotting fees for certified organic food products, a retailing area where slotting fees had not previously been well documented. Econometric results from both ordered response and binary response models suggest that a number of firm-level attributes do influence the presence and/or relative size of organic slotting fees in a manner that is mostly consistent with an economic efficiency rationale and partly consistent with a market power/strategic behavior rationale for slotting fees.     

非污许可权交易减排机理研究——基于社会成本角度

排污权交易制度是推动节能减排的一项行之有效的政策。本文从社会成本的角度分析由初始分配市场（一级市场）和两个并行的二级市场（转让交易市场和回购交易市场）构成排污许可权交易市场体系在激励企业污染自主减排上的经济学机理。