布伦特原油期货价格波动周期

用最大熵谱分析法研究布伦特原油期货月结算价格序列，发现国际原油价格存在10．7个月，25．6个月，5．3个月和3．6个月的波动周期。同时发现，油价序列的周期之间存在谐波关系，周期长度与油价在一些关键区域的停留时间之间存在倍数关系。这说明油价波动具有一定的时间规律性。     

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。     

北京地区鸡蛋价格波动特征及影响因素分析

近几年我国鸡蛋价格波动幅度较大,这在一定程度上影响了居民消费,更大程度上对我国鸡蛋产业的健康发展产生不利影响。文章基于北京地区2001年至2016年鸡蛋价格波动情况,运用成分分解法对鸡蛋价格波动中的趋势和周期成分进行分离,从而能在短期和长期分析地区鸡蛋价格波动的特点,同时通过线性回归模型分析了影响鸡蛋价格波动主要因素的影响程度。通过对北京地区鸡蛋价格波动特征以及影响因素的分析,以期能为促进北京地区鸡蛋产业的健康发展提供参考。     

基于小波分析的中美大豆期货价格周期波动关联性研究

本文运用小波分析法对大连商品期货交易所(DCE)和芝加哥商品交易所(CBOT)大豆期货价格序列以及收益率序列进行分解与重构,分析了两个市场的波动周期,并结合VAR和多元GARCH-BEKK模型,从价格溢出和波动溢出两个角度研究了不同尺度下国内外期货价格之间的动态关系,结果表明:国内外大豆各细节层期货价格收益率之间存在显著的价格溢出与波动溢出效应,且主要是CBOT向DCE的价格溢出与波动溢出传导.     

谱分析方法及其在经济周期研究中的应用——以美国经济周期波动(1930-2009)的谱分析为例

谱分析方法弥补了时域分析的不足,它把经济时间序列分解为具有不同振幅、相位和频率的数个周期分量的叠加,通过比较各周期分量的相对重要性,找出原序列中隐含的各个主要周期分量,从而为说明经济周期波动的内在机制、经济周期波动的监测预警及其对策研究提供依据。根据该方法确定的各主要周期长度值,还可建立周期波动序列的三角函数叠加拟合模型,并可通过该模型实现对经济波动的预测。本文介绍了谱分析方法的原理,并运用此方法对美国1930年至2009年间的经济周期进行了研究。     

舰船建造防污漆价格波动分析及其模型

基于防污漆价格数据（1998-2007年）绘制了其价格波动曲线,分析了其波动成因。为了反映波动规律和进行波动预测,又基于支持向量回归机算法建立了防污漆价格波动模型,并与经验算法和时间序列法进行了结果比较,证实了该波动模型的有效性。     

香港认股权证市场与房地产市场互动关系研究

本文首先介绍了权证的概念及其在香港的发展,接着利用Black-Scholes期权定价模型计算了香港7家主要房地产公司认股权证的隐含波动率,最后通过格兰杰因果关系检验定量考查了认股权证的隐含波动率和房地产价格历史波幅之间的因果关系.实证研究结论表明:认股权证的隐含波动率是房地产价格历史波幅的领先指标,领先周期为3个月至7个月不等;市场信息先被认股权证市场吸收,然后再流向房地产市场.该结论对内地房地产公司认股权证的价值估计以及房地产价格的预测都具有借鉴意义.     

四川省生猪市场价格波动分析

主要针对四川省2000年1月至2012年12月的生猪市场价格波动的特征分析,采用Census X12季节调整法对月度数据进行调整,再结合HP滤波法对波动的周期规律进行分析,得出生猪价格近十几年的年度内的波动幅度有扩大的趋势,期间还存在不同程度的波动幅度,同时四川省生猪价格波动还呈现出季节性的特点,而且四川省生猪当期价格容易受前期价格的影响。     

突发事件对农产品价格的影响及调控机制研究——以我国肉鸡行业为例

通过结构向量回归模型分析2001-2009年肉鸡产业链上中下游各个环节产品价格的月度数据,接着利用脉冲响应函数模型分析突发事件对肉鸡产业链价格体系传递的影响。研究表明:突发事件对肉鸡产业链价格波动水平的影响比较显著,但价格传递是不完全的,且对活鸡价格、肉雏鸡价格和饲料价格的传递程度逐渐降低。最后,提出了应对突发事件对农产品价格冲击的政策建议。     

从振动原理探经济系统价格波动本质规律

首先,根据振动形成的条件和原理,证明了经济系统价格波动具备形成周期性的条件。其次,通过建立理想经济振动模型,研究了经济系统波动周期的本质规律,提出经济系统价格波动周期长度与经济当量成正比,与供需价格弹性系数和价格转化系数成反比。并运用计量公式对我国生产价格指数的波动周期进行了预测。最后是成果总结与展望。     

How is China's coke price related with the world oil price? The role of extreme movements

This paper focuses on the relationship between the world oil price and China's coke price, particularly with respect to extreme movements in the world oil price. Based on a daily sample from 2009 to 2015 and the ARJI-GARCH models and copulas, our empirical results show that China's coke price and the world oil price are characterized by GARCH volatility and jump behaviors. Specifically, negative oil price shocks lead to falls in China's coke returns on the following day while positive oil prices have no significant effects. In addition, current coke returns positively respond to the very recent oil price jump intensity, and a time-varying and volatile lower tail dependence is found between the world oil price and China's coke price. Our results are expected to have implications for coke producers and users and policy makers.     

Pass-through in United States beef cattle prices: a test of Ricardian rent theory

Feeder cattle are fattened to become fed live cattle 6 months later, and the feeder cattle stock is fixed in the short-run. Efficiency in competitive markets suggests feeder cattle prices should fully reflect feed prices and information on future fed cattle prices. Employing a long time series (1979–2004) of feeder cattle futures, live cattle futures, and local corn prices, we test whether complete pass-through occurs. For fed cattle futures prices, we find about 93% of complete pass-through to present feeder cattle prices. The corresponding negative effect of a corn price increase is about 87% of complete pass-through. In contrast with imperfectly competitive agricultural land rental markets, the results support the hypothesis of Ricardian rent extraction by the scarce asset owner in feeder cattle markets.     

The product life cycle and sample representativity bias in price indexes

Official price indexes are usually calculated using matched samples of products. If products exhibit systematic price trends at different points in their life cycle then matched sample methods may introduce bias if the life cycle movement in the sample does not adequately reflect that in the population. This article explores the extent of these life cycle pricing effects and then examines the bias it can introduce in measured inflation. A large US supermarket scanner data set for six cities and six products over 12 years is used. Using hedonic methods we find that the life cycle component of price change is important across a range of products and cities. To explore the bias introduced by these movements, we use simulations that construct indexes with different sample update frequency. For indexes that are never completely resampled, we find an annual absolute bias of 0.88 and 0.59 percentage points depending upon whether we use the actual prices or prices imputed from our hedonic model. This compares with absolute biases of 0.34 and 0.10 percentage points for the corresponding cases for samples, which are re-selected annually. Thus our results provide strong support for more frequently updating index samples.     

国际原油价格波动对我国工业品出厂价格的影响——基于行业层面的实证分析

随着我国石油消费量和进口量的不断增长,国际原油价格的波动对我国经济的影响越来越大。基于38个行业的月度数据,本文详细分析了2003年1月-2009年2月国际原油价格波动对我国PPI指数的影响,研究发现:尽管为了降低国际油价对国内经济的冲击,政府仍对成品油定价体制实行部分调控,但国际原油价格的波动对我国PPI指数仍具有重要影响,尤其是生产资料价格以及石化行业等高耗能行业,而这主要与各行业的能源消费总量和能源利用效率有关。为此,我国应加快国内成品油定价体制改革,实施有效的产业政策,以促使各行业提高其能源利用效率,并最终有效地降低国际油价波动给我国经济带来的价格效应。     

Meat and fish consumption patterns in Saudi Arabia

This study analyses the demand for meat (beef, chicken and lamb) and fish in Saudi Arabia in a system-wide framework using data for the period 1985–2010. A preliminary data analysis reveals that, in Saudi Arabia, the relative consumption of beef, chicken and fish has a positive growth, while lamb has a negative growth. The average relative price growth rates of beef, chicken and fish are negative, while that of lamb is positive. The expenditure shares of beef, chicken and fish have increased while that of lamb has fallen. The estimation results of the demand system reveal that there is an autonomous trend out of lamb into beef, chicken and fish. The implied income elasticities indicate that beef, lamb and fish are considered to be luxuries, while chicken is a necessity. The demand for all meat products and fish are price inelastic. These elasticities are key inputs for policy analysts in terms of devising policies in relation to meat production, meat imports, taxation and food security issues in Saudi Arabia. The usefulness of the implied elasticities is demonstrated by simulating the consumption of beef, chicken, lamb and fish under various policy scenarios.     

Bootstrapping asset price bubbles

In this paper we propose a method that allows to test for asset price bubbles. The method is mainly based on a bootstrap methodology which helps to compute the finite sample probability distribution of the asymptotic tests which were recently proposed in Phillips et al. (2011) and Phillips and Yu (2009). We apply the method to the Nasdaq stock price index and Case-Shiller house price index. The results indicate that speculation was behind the upsurge in both asset prices.     

Identification of strategies to improve goat marketing in the lowlands of Ethiopia: a hedonic price analysis

This article aims at identifying factors that determine market prices of goats and analyse potential mechanisms by which smallholder goat producers could maximize their benefits. Data on 357 farm households and 2103 goat transactions were collected in three major goat markets in the lowlands of Ethiopia. Hedonic price models adjusted for heteroscedasticity were employed to analyse the observed price data. Model results showed the relative importance of different factors in determining goat prices. Animal attributes including age, sex, live weight, body condition and presence of horn as well as types of buyer and market outlet targeted and time of selling were found to be important. Particularly, goats marketed during festive periods where demand for meat increases (e.g. Ethiopian New Year) command higher prices. These results imply that interventions such as systematic selection schemes targeting traits demanded by the market, improved linkages to markets, easy access to market information systems and creating conducive environment including incentive mechanisms can enhance smallholder farmers’ and pastoralists’ ability to take advantage of seasonal and spatial price changes and become market responsive with effective marketing strategies. Such changes can be potent in improving the livelihoods of smallholder farmers and pastoralists.     

Testing the martingale difference hypothesis in CO2 emission allowances

This study examines the martingale difference hypothesis (MDH) for the carbon emission allowance market within the European Union Emission Trading Scheme (EU ETS) during the Phase I and the Phase II, using both daily and weekly data over the 2005–2009 period. We analyze the MDH for spot prices negotiated on BlueNext, European Energy Exchange and Nord Pool along with futures prices negotiated on BlueNext and European Climate Exchange, using the new variance ratio tests developed by Kim (2009) and the generalized spectral test proposed by Escanciano and Velasco (2006). For the Phase I, the results show that the spot price changes of these three markets are predictable, suggesting the possibility of abnormal returns through speculation, except during the period April 2006 to October 2006, namely after the compliance break and before the ECs of stricter NAP II. Finally, we find that the CO₂ spot and futures price changes are unpredictable during the Phase II because we failed to reject the MDH based on both daily and weekly data. Thus, these markets are found to be weak-form efficient.     

Asymmetric search and prospect theory: choice experiment on consumer willingness to search in the gasoline retail market

We use an internet survey conducted among a representative random sample of drivers in the State of Ohio consisting of a choice experiment designed to examine the mechanism driving asymmetric search. The internet survey affords us the opportunity to overcome endogeneity difficulties by imposing exogenous price changes on gasoline consumers to examine the decision-making process behind intended search decisions. We randomly assigned participants to one of five price treatments (either 2.5 or 5% above or below their reported expected price, or no change). We provide a simple empirical model to derive testable implications under prospect theory and use the internet survey to test them. Results indicate that among the respondents who faced prices below their expected price, only 12% chose to search, whereas 45% searched when prices were above. Further, we find results consistent with asymmetric search being driven by prospect theory. The change in consumers’ willingness to search is twice as large when prices exceed expectations by 2.5% relative to when prices exceed them by 5% suggesting that consumers derive utility of finding a good deal evaluated relative to a reference price. We show that this result is inconsistent with standard utility theory or consumers using alternative reference prices.     

Liquidity and crude oil prices: China's influence over 1996–2011

Movement in China's money supply is shown to drive the movement in world money supply over the last fifteen years. Structural shocks to G3 (U.S., Eurozone and Japan) real M2 and to China's real M2 are both large over 1996:1–2011:12. The cumulative impact of real G3 M2 shocks on real oil prices is small and statistically insignificant. In contrast, the cumulative impact of China's real M2 on the real price of crude oil is large and statistically significant. Following a sharp fall in real oil price in the last half of 2008, the cumulative impact of China's real M2 on the real price of crude oil is particularly substantial in the recovery of oil price during 2009 from a low of $41.68 for January 2009. The analysis sheds light on the causes of movement in oil prices over the last fifteen years and in assessing the relative importance of China in the upsurge of the real price of crude oil.