报童投资组合模型中的批发价契约设计

当风险规避型报童的订货资金有限,却有多种产品可供订购时,供应商需要设计恰当的契约,以引导报童的订货行为,实现最大化自身收益的目的。针对上述问题,本文运用投资组合理论处理报童的决策问题;在此基础上建立了供应商与报童之间的博弈模型,设计了求解最优批发价契约的算法;通过数值算例,说明了最优契约的求解过程。结果表明,与未经优化而随机选择的契约相比,基于该算法求得的契约显著提升了供应商的期望收益。     

中国黄金期货与黄金现货价格的实证分析

意旨探索中国黄金现货价格对黄金期货价格形成的作用机制。借助ADL模型和共同因子贡献法进行实证分析,研究了中国黄金期货价格与黄金现货价格的关系。研究表明,中国黄金期货价格与现货价格长期趋势是一致的,但是短期存在比较大的偏差,同时中国黄金期货和现货价格波动率序列之间有较高的依存度。由此中国黄金期货市场已具备一定规避风险的功能。     

中美小麦期货价格与现货价格传递关系的比较研究

为研究我国小麦期货市场价格发现功能的发挥程度及此功能对现货市场价格的影响,本文运用Johansen协整检验、误差修正模型、脉冲响应函数和方差分解等对中美小麦期货与现货价格传递关系进行了实证研究。结果显示：中美两国国内小麦期货与现货价格之间均存在明显的双向引导关系和长期均衡关系;我国小麦期货价格和现货价格对一个标准差信息冲击的反应均稍强于美国;我国小麦期货市场价格发现功能的发挥程度要优于美国。     

Time‐Varying Spot and Futures Oil Price Dynamics

In this paper, we investigate the role of crude oil spot and futures prices in the process of price discovery by using daily data over the period from January 1992 to September 2012. We provide evidence that futures markets play a more important role than spot markets, but their relative contributions turn out to be highly unstable, especially for the most deferred contracts. Furthermore, considering the time‐varying dynamics provides evidence of a smaller role for futures markets and a greater role for fundamental factors in driving oil prices during the global financial turmoil of 2007–2008. The implications of the main results for hedging and forecasting crude oil spot prices are also discussed.     

中国大豆批发价格波动规律研究——基于GARCH模型

本文运用GARCH(1,1)模型考察了我国大豆批发价格的波动特征。研究发现,1999—2008年期间我国大豆批发价格呈随机游走趋势,其波动具有右厚尾特征和集群性,价格波动具有ARCH效应,波动冲击影响衰减较慢,近期波动有加剧趋势。     

可储存商品期货的价格稳定作用研究——期货—商品市场动态均衡模型

文章通过建立期货--商品市场动态均衡模型,推导出在没有生产不确定性,商品是可储存的,所有市场参与者具有相同信息的假设下,期货市场几乎毫无疑问的会减少商品价格的波动.模型中,首次提出了竞争性价格预期的方程和概念,并分析了竞争性价格预期所反映的期货市场价格发现功能对于商品市场价格稳定的重要影响.     

Exchange Rate Pass-Through in Vertically Related Markets

The paper provides a theoretical framework which addresses exchange rate pass-through within the setting of vertically related markets. In particular, foreign firms' price adjustment in response to an exchange rate shock is evaluated. This permits study of the importance of cost effects of the exchange rate shock. Recent empirical evidence indicated the relevance of these cost effects. It is shown that one can decompose the effects of an exchange rate shock on the final goods market into direct and indirect components. The indirect effect works through the input market. The degree of pass-through then depends on the relative importance of direct and indirect effects, which in turn depends on the nature of vertical structures and strategic firm behavior. It is shown that the institutional aspects of vertically related markets play a role in explaining incomplete price adjustments in both intermediate and final goods markets and the failure of PPP in the short run.     

基于谱分解的纽约商品交易所黄金现货价格周期研究

本文通过对剔除季节因素和长期因素的纽约商品交易所黄金现货价格数据进行谱分解,发现该黄金现货价格存在90个月和150个月两个周期。并以此为依据对黄金现货价格趋势进行了预测,为优化我国外汇储备配置,防范汇率波动风险提供政策建议。     

期货市场与现货市场之间的价格研究--中国农产品市场的经验

本文借助于信息共享模型与波动溢出效应模型对我国大豆和小麦的期、现货市场之间的价格发现进行了多层次的实证研究,定量描述了期、现货市场在价格发现中作用的大小,深入刻画了我国农产品期、现货市场之间的动态关系.研究结果显示:大豆期、现货价格之间存在双向引导关系,小麦仅存在期货对现货的单向引导关系;期、现货市场均扮演着重要的价格发现角色,且期货市场在价格发现中处于主导地位;期、现货市场之间均存在双向波动溢出关系,但现货市场来自期货市场的波动溢出效应均强于期货市场来自现货市场的波动溢出效应;并且,随着期货市场的发展,期、现货市场之间的波动溢出程度均呈逐渐增强态势.     

Investment, Pass-Through, and Exchange Rates: A Cross-Country Comparison

Using detailed data from the United States, Canada, the United Kingdom, and Japan, we examine the implications of exchange rates for time series of sectoral investment. Both theoretically and empirically, we show that investment responsiveness to exchange rates varies over time, positively in relation to sectoral reliance on export share and negatively with respect to the share of imported inputs in production. Important differences exist in investment endogeneity across high- and low-price-over-cost markup sectors, with investment in low-markup sectors often significantly more responsive to exchange rates. Cross-country differences in investment response are only partially explained by industrial organization arguments.     

Interest Rate Pass-Through: Empirical Results for the Euro Area

Abstract. This paper empirically examines the interest rate pass‐through at the euro area level. The focus is on the pass‐through of official interest rates, approximated by the overnight interest rate, to longer‐term market interest rates, which, in turn, are a proxy for the marginal costs for banks to attract deposits or grant loans, and therefore passed through to retail bank interest rates. Empirical results, on the basis of a (vector) error‐correction and vector autoregressive model, suggest that the pass‐through of official interest to market interest rates is complete for money market interest rates up to three months, but not for market interest rates with longer maturities. Furthermore, the immediate pass‐through of changes in market interest rates to bank deposit and lending rates is found to be at most 50%, whereas the final pass‐through is typically found to be close to 100%, in particular for lending rates. Empirical results for a sub‐sample starting in January 1999 show qualitatively similar findings and are supportive of a quicker interest rate pass‐through since the introduction of the euro. It is shown that the difference between the adjustment speed of bank deposit and lending rates (typically around one versus three months since the common monetary policy) can to a large extent significantly be explained by credit risk considerations.     

电力市场中计及实时电价的电力系统运行风险管理新策略

针对电力市场中用户对实时电价的反应,本文提出一种计及实时电价的电力系统运行风险管理新策略。该策略在评估电力系统运行风险的基础上,对实时电价进行调节,并以电价为信号,刺激用户采取合理的用电结构和方式,从而增强电力系统运行的可靠性。该方法只是弥补了传统方法无法考虑系统运行可靠性的不足,而并非颠覆传统的电价管理方法,所以二者具有很好的衔接性。最后,通过对IEEPRTS测试系统的可靠性进行计算分析,验证了所提算法的有效性。     

Exchange-Rate Pass-Through With Intertemporal Linkages: Evidence At the Commodity Level

This paper argues that the stability of exchange-rate pass-through is not well tested in common econometric specifications of pass-through equations. This is because (a) expected future exchange-rate changes are an important omitted variable in these estimations, and (b) the use of aggregate data complicates inference. Commodity-level estimates obtained from applying the Kalman filter are consistent with the apparent instability in aggregate pass-through. Moreover, by comparing these estimates to actual exchange-rate movements, the observed instability is found to be consistent with forward-looking behavior as posited.     

制造范式转型与批发环节模块化

从经济全球化的发展来看,传统的垂直一体化的企业内集成价值链正在转型,被分散于全球各地的专业化公司之间的协作价值网所取代。制造范式的转型,造成纯商业批发业逐渐收缩,并演化为制造业动态联盟的一个功能性环节。处在制造商与零售点之间、以配送中心为结点的增值网(VAN)是批发业的进化形态,成功的互联增值网扩展了原有批发业的功能。     

Retail and Wholesale Margins in Successive Cournot Oligopolies

This paper studies the determination of retail and wholesale prices in successive Cournot oligopolies. It is shown that (i) the ratio of retail to wholesale margins increases (decreases, resp.) as the retail part of the market becomes less (more, resp.) competitive; (ii) the ratio of margin in one part of the market to total margin increases (decreases, resp.) as that part of the market becomes less (more, resp.) competitive; (iii) the decline in final consumer price is larger (smaller, resp.) if the entry of additional firm occurs in less (more, resp.) competitive part of the market. The results of the paper are applied to the case of third degree price discrimination.     

Assessing the Degree of Spot Market Integration for U.S. Natural Gas: Evidence from Daily Price Data

This paper assesses the degree of market integration in the U.S. natural gas market following the FERC’s ‘open access’ reforms. Daily spot prices at 76 market locations from 1993 to 1997 are used to examine the geographic extent of the market and the speed with which market forces move prices toward equilibrium in the face of ongoing price shocks. The empirical results suggest that the East and Central regions form a highly integrated market, but that this market is quite segmented from the more loosely integrated Western market.     

A Retrospective Look at Wholesale Gas: Industry Restructuring

The purpose of this paper is to identify lessons learned from the restructuring of the natural gas industry. We draw a number of conclusions including that the billions of dollars of savings typically attributed to gas industry restructuring resulted not from competition but because restructuring stranded billions of dollars in contractual purchase obligations, costs that were absorbed by producers and pipelines. The replacement of regulated wholesale merchants by new entrants did not occur because of competitive efficiencies. Competition in wholesale gas marketing has produced consumer benefits in the form of innovation, new product development, broader choices and possibly reduced costs. Bi-lateral contracting led to the development of gas markets, which in turn, produced market-wide diffusion and integration of pricing information.