经济适用房的历史地位与改革方向

经济适用房曾被赋予了我国住房供应体系的主体的地位.五年多来,经济适应房建设取得了巨大的成效,也暴露出了严重的缺陷.本文从改革与发展两个角度研究了经济适用房的发展历程与成就,探讨了其内在缺陷,论证了在我国中低价位的商品房市场正在形成,并且在两年左右的时间内,低价商品房市场将与经济适用房市场现实地形成竞争.在此基础上,本文认为经济适用房作为我国住房体制改革的阶段性措施已初步完成了它的历史使命.随着客观条件的变化,经济适用房建设应逐步让位于普通的商品房市场.     

吉林省粮食价格变动特征及成因分析

近年来,受全球原油价格攀升、部分粮食主产国自然灾害频发、畜牧业和工业需求大幅增加等因素影响,国际市场粮食价格震荡走高,且涨幅较大。尤其是2012年以来,美国、俄罗斯等粮食主产区遭受了高温干旱、台风、暴雨等自然灾害,减产预期不断增加,粮食价格大幅攀升。为此,我们对粮食价格情况进行了深入的分析,结果显示,吉林省粮食价格自2004年开始逐年上涨,在促进农民增收的同时,也对城乡居民尤其是低收入群体的日常生活产生一定影响,并且已成为推动我省居民消费价格总水平走高的最主要因素。     

Trade-size clustering and price efficiency

Using a sample of 26 markets, this paper investigates if trade-size clustering affects price efficiency. Our results suggest that more clustering trades are associated with greater resemblance of a random walk, less pricing errors, and shorter price delays. Moreover, we examine three underlying mechanisms to explain how clustering improves efficiency. First, we show that clustering trades are informative, consistent with the idea that stealth traders leverage such tactics to convey private information to prices. Second, we discover that clustering trades are positively related to investor attention (stock liquidity), implying that informed clustering trades happen at the presence of enormous uninformed investors. High attention and liquid markets help reduce the trading friction, thereby prompting quick price adjustments to private information released by the stealth trading.     

住宅非典型性对住宅价格波动的影响——基于美国AHS微观面板调查数据的经验

使用1985~2009年美国AHS微观面板调查数据和计量经济学分析方法,论证了住宅非典型性对住宅价格波动的非对称影响,此研究发现对针对中国市场的相关研究提供参考,同时在此基础上讨论了对普通住宅购买者和机构投资者的指导意义以及如何提高低收入家庭住房拥有率的政策建议。     

Price matching and product differentiation strategies considering showrooming

Showrooming, a phenomenon in which customers use brick-and-mortar stores to assess products and then purchase them from online retailers (o-retailers) for lower prices, is considered a great threat to traditional retailers (t-retailers). To combat showrooming, many t-retailers have executed price matching which enables customers to pay o-retailers' lower prices for the identical product. To avoid direct competition with t-retailers who execute price matching, many o-retailers have begun to sell differentiated products from t-retailers, which weakens the information advantage to customers from practicing showrooming. Motivated by these observations, we construct a duopoly game, where a t-retailer and an o-retailer sell products in a same category, to study the profitabilities of product differentiation and price matching in the context of showrooming. The results show that in the scenario without price matching, the o-retailer is likely to benefit from product differentiation only when the o-retailer's differentiated product is more popular with customers than the t-retailer's product. However, in the price matching scenario, the o-retailer also has the opportunity to benefit from product differentiation when the o-retailer's differentiated product is less popular with customers than the t-retailer's product, and product differentiation can be a win-win strategy for the two retailers under certain conditions. Considering the o-retailer's product differentiation decision, the t-retailer is only likely to execute price matching if the non-digital attributes of the product category sold by two retailers are not very obvious.     

The introduction of seasonal unit roots and cointegration to test index aggregation optimality: An application to a Spanish farm price index

In this paper we present a methodological proposal of the way integration and cointegration analysis can best be used to test if the level of aggregation of an index is adequate. Using this proposal, we enquire the extent to which a Spanish aggregate farm price index captures the behavior of its components. First version received: October 1994/final version received: September 1998     

基于需求角度房地产价格影响因素的实证分析

本文从需求角度分析影响房价的各因素,包括经济发展水平、城镇化水平、城镇居民收入水平和通货膨胀等,并选取一系列房地产价格的影响指标在2001-2010年的十年数据,建立31个省市房价的多种面板数据模型。对不同模型间进行选择和比较,得出最佳模型为个体固定效应模型,力图揭示各选取因素是否能够对房地产价格产生显著影响,从而确定需求层面上房价的影响因素,以及得出相应建议。     

对修订房屋建筑制图统一标准的建议

就永恒建筑制图统一标准中助动词用误的使用原则,具体用法提出看法,并对标准中不适应计算机绘图的一些条文提出修改建议,还指出标准中一些个人认为是错误或不恰当的提法,供修订标准时参考。     

论政府干预市场和管制价格的边界——一则“观众诉影院侵犯选择权案”的经济学阐释

消费者投诉商家"侵犯其选择权"等诸如此类的问题,反映了消费者对政府干预的期盼,直接表现为对政府管制市场价格的渴望.理论分析表明,政府以提供"禁止"之类"有益品"(merit goods)的方式来纠正人们不舍理的偏好进而解决市场失灵问题,是市场经济条件下政府的重要职能之一.商家的行规戒律并非"不含理偏好",不属于政府干预或管制的范围.因此,发展市场经济应该更多地让价格发挥配置资源的作用;政府的价格管制边界应严格限定在市场失灵领域,如对垄断企业的价格及非垄断企业的卡特尔定价行为等进行管制.     

能源要素价格改革对宏观经济影响的CGE分析

当前国内要素价格改革呼声很高,其中能源价格改革更为迫切。本文利用MCHUGE模型,研究提高能源价格对中国经济发展的影响。研究表明,提高能源价格在短期和长期均能显著降低中国能源强度,其原因在于能源价格的提高优化了中国经济产业结构,第二产业尤其是重工业在国内生产总值中所占比重下降,减少了总体的能源消费。但是能源价格提高对宏观经济带来了较大的负面影响,其导致的出口下降和投资需求下降分别是短期和长期国内生产总值下降的主要原因。