双边市场、不完全信息与二级价格歧视

本文研究了双边市场二级价格歧视问题。本文构建了包括广告商、消费者、垄断平台在内的两阶段博弈模型，研究了在最优与次优情况下平台的定价机制，分析了二级价格歧视对平台利润、社会福利等的影响。研究表明：（1）“顶部无扭曲”或“底部无扭曲”并不严格成立；（2）平台对观众提供的节目质量、广告插播量均可能出现类型逆转的情况；（3）二级价格歧视会增加社会总福利；（4）“会员制”是平台可能的占优定价机制之一。     

房产税促进地区产业结构优化的路径与异质性表现——产业转移和企业创新视角的沪渝比较

房地产市场过度繁荣带来的房价过快上涨会影响要素流动和企业行为，进而加剧资源错配，不利于地区产业结构优化。征收房产税可以有效抑制房价过快上涨，通过地区相对房价的下降减轻资源错配程度，并从影响产业转移和推动企业创新两条路径促进地区产业结构优化。运用合成控制法对上海和重庆房产税改革试点的政策效应进行评估，结果表明：重庆的房产税政策有效抑制了房价过快上涨，促进了先进产业的转入和创新水平的提高，进而显著提高了地区产业结构合理化和高级化水平，地区产业结构优化效应明显；上海的房产税政策对房价上涨的抑制作用不明显，高房价阻碍了高技能人才的流入，导致其产业高级化水平的提高更多依赖于低端服务业的发展，不利于地区产业结构合理化，总体上并未能有效促进地区产业结构优化。上海与重庆房产税政策效应的差异不仅源于其政策力度的不同，还由于两地经济发展水平和产业结构的不同。房产税政策必须有效抑制房价上涨，并应结合本地经济发展实际因地制宜，才能更好地促进地区产业结构优化。     

The non-linear impact of oil price on the oil demand

ABSTRACT

A panel smooth transition regression model was adopted to analyse the non-linear impact of oil prices on oil demand. Data for 42 countries was obtained from the International Energy Agency for the time period spanning from January 1990 to June 2017. The results indicate that a threshold value does exist. Furthermore, when the oil price was lower than this threshold value, a positive relationship between oil price and oil demand was observed. When the price of oil was higher than the threshold value, however, a negative relationship between price and demand was found.     

Forecasting UK consumer price inflation using inflation forecasts

The inflation rate is a key economic indicator for which forecasters are constantly seeking to improve the accuracy of predictions, so as to enable better macroeconomic decision making. Presented in this paper is a novel approach which seeks to exploit auxiliary information contained within inflation forecasts for developing a new and improved forecast for inflation by modeling with Multivariate Singular Spectrum Analysis (MSSA). Unlike other forecast combination techniques, the key feature of the proposed approach is its use of forecasts, i.e. data into the future, within the modeling process and extracting auxiliary information for generating a new and improved forecast. We consider real data on consumer price inflation in UK, obtained via the Office for National Statistics. A variety of parametric and nonparametric models are then used to generate univariate forecasts of inflation. Thereafter, the best univariate forecast is considered as auxiliary information within the MSSA model alongside historical data for UK consumer price inflation, and a new multivariate forecast is generated. We find compelling evidence which shows the benefits of the proposed approach at generating more accurate medium to long term inflation forecasts for UK in relation to the competing models. Finally, through the discussion, we also consider Google Trends forecasts for inflation within the proposed framework.     

Forward-looking agents and inflation in an oil-producing country: Evidence from Iran

A monetary model of inflation was estimated on the oil-producing country of Iran for the period 1984:1–2016:4. It was found that expectations are formed rationally and that agents are forward-looking and adjust their behavior based on changes in government expenditure. Consequently, it was found that higher fiscal variables result in lower price levels over the long run. A higher oil price leads to a lower price in the country but to a higher money supply and interest rate over the long run. Furthermore, a higher domestic interest rate results in a higher price level, while the reverse is true for a higher foreign interest rate. Another cause of inflation in Iran is the foreign price level. It was found that over the short run a higher growth of the real government expenditure results in a lower inflation rate in the country but a positive change in the foreign interest rate brings in a higher inflation rate.     

浅谈固定总价合同对承包商的利弊

本文集中就固定总价合同对承包商的利与弊进行了有效的分析与研究,对固定总价合同中的项目承包方的风险与风险控制提出了良好的解决策略,以期对承包商的利益与稳定发展提供良好的意见指导与帮助。     

浅析合理低价法投标报价策略和方法

随着市场经济体制的不断完善,恶性竞争逐渐减少。本文通过阐述合理低价法的含义及与投标报价之间的关系,以及报价策略,分析投标报价决策和清单单价报价的技巧,同时提出相应的政策建议,进而为招投标管理提供参考依据。     

The Effect of Political Uprisings on the Location of Price Discovery: Evidence from Egyptian Cross-Listed Equities

In this study, we aim to determine the location of price discovery for Egyptian cross-listed stocks around the political uprising that started on January 25, 2011, and resulted in a two-month stock market closure. We measure price discovery using Gonzalo and Granger's component share and Hasbrouck's information shares and find that, for some stocks, the contribution of the foreign market in pricing cross-listed equities increases in the period directly following the reopening of the Egyptian stock market. We discuss the factors that could explain the more pronounced shifts in the location of price discovery for some companies in the post-uprising period.     

Contemporaneous ADR pricing: intraday dynamics during overlapping trading hours

We contribute to the literature by identifying and accurately measuring the drivers of American depositary receipt (ADR) returns contemporaneously across various global time zones. We consider ADRs as two inherently distinct asset classes – stocks and currencies – bundled into one. Throughout, we use a relatively refined, focused, and synchronized minute-by-minute data set on ADRs and all other variables. ADRs from all countries with regular trading hours that overlap with those of the US are considered individually and in clusters. We analyze the interplay of several factors that influence ADRs pricing patterns. Further, we investigate whether such patterns vary by currency, ADR, industry, and emerging/developed market classifications. Our findings indicate that synchronized returns on underlying shares comprise 68.5–74% of the explained returns in ADRs. The remaining 31.5–26% of returns are generated by movements in currency rates. These results are robust across the several models and estimation methods employed. Our findings also show persistent small price discrepancies between ADRs and dollar-adjusted underlying shares on a minute-by-minute basis, implying possible arbitrage opportunities. However, we conclude that trading and ADR conversion costs render such opportunities unattractive.