马克思与李嘉图的地租理论比较研究

马克思的地租理论是在批判、继承、发展李嘉图地租理论基础上形成的，两者在地租理论方面有相同之处更有不同之处。李嘉图地租理论是建立在劳动价值论的基础上的，马克思对其给予了高度的评价，但也批判了李嘉图地租理论中的许多错误之处，并阐述了李嘉图错误的原因，在批判的同时继承、发展了他的地租理论，使地租理论成为一个科学和完善的理论。     

EXPLICIT SOLUTIONS OF CONSUMPTION-INVESTMENT PROBLEMS IN FINANCIAL MARKETS WITH REGIME SWITCHING

We consider a consumption and investment problem where the market presents different regimes. An investor taking decisions continuously in time selects a consumption–investment policy to maximize his expected total discounted utility of consumption. The market coefficients and the investor's utility of consumption are dependent on the regime of the financial market, which is modeled by an observable finite-state continuous-time Markov chain. We obtain explicit optimal consumption and investment policies for specific HARA utility functions. We show that the optimal policy depends on the regime. We also make an economic analysis of the solutions, and show that for every investor the optimal proportion to allocate in the risky asset is greater in a "bull market" than in a "bear market." This behavior is not affected by the investor's risk preferences. On the other hand, the optimal consumption to wealth ratio depends not only on the regime, but also on the investor's risk tolerance: high risk-averse investors will consume relatively more in a "bull market" than in a "bear market," and the opposite is true for low risk-averse investors.     

PRICING AND HEDGING OF DERIVATIVES BASED ON NONTRADABLE UNDERLYINGS

This paper is concerned with the study of insurance related derivatives on financial markets that are based on nontradable underlyings, but are correlated with tradable assets. We calculate exponential utility‐based indifference prices, and corresponding derivative hedges. We use the fact that they can be represented in terms of solutions of forward‐backward stochastic differential equations (FBSDE) with quadratic growth generators. We derive the Markov property of such FBSDE and generalize results on the differentiability relative to the initial value of their forward components. In this case the optimal hedge can be represented by the price gradient multiplied with the correlation coefficient. This way we obtain a generalization of the classical “delta hedge” in complete markets.     

A revisit on real interest rate parity hypothesis – simulation evidence from efficient unit root tests

A set of unit root tests are applied to test the existence of long-run real interest rate parity among the G-10 countries over the period 1971M1 to 2007M2. Rather than trusting the asymptotic distributions, this article uses simulation techniques to establish the small sample distributions of these tests, conditional on the stationary and nonstationary processes. The empirical results indicate that the tests have stable finite-sample sizes and higher size-adjusted powers such that the two estimated processes can be distinguished from each other. Thus, for six of the nine countries, their series are more likely to come from the estimated Autoregressive (AR) stationary process than from the nonstationary process. Noticeably, the testing results are rather different from those using the asymptotic distributions, in which only three countries support the real interest rate parity.     

Gender Employment Disparities,Financialization, and Profitability Dynamics on the Eve of Italy's Post-2008 Crisis

This study explores aggregate profitability in Italy from 1994 to 2008 in its connection with structural change and gender employment disparities. Using decomposition analysis, the study finds that aggregate profit rate declined, but the profit share did not. Male variables – such as earnings, output, employment, and working hours – tended to have more weight than female ones in explaining aggregate outcomes. Structural change also played a major role, as the economy specialized in sectors with falling real wages and wage shares, especially the financial sector and construction. Further falls in the wage share and widening wage gaps may not guarantee a rise in profitability. This result entails that “neo-mercantilist” approaches to solve the crisis might only prepare the next crisis, while a coordinated expansion of demand could be more successful. Moreover, gender issues should not be neglected in terms of favoring women's employment and entrepreneurship.     

英国四大银行经营战略的变革与启示

上世纪90年代以前,英国银行在“大的是好的”的观念引导下,采取了不计代价追求规模、增长和市场份额的经营战略,这与我国目前多元化银行组织体系下各类银行普遍追求业务规模和市场份额,并导致整个银行业经营战略趋同的状况颇为相似。20世纪90年代以后,英国银行业在日益严峻的竞争环境下,逐渐认识到大的并不总是美好的,必须将战略重点集中于具有核心竞争能力的领域,实施各具特色的经营战略。随着我国金融市场的不断开放和分业经营限制的逐步松动,以四大银行为首的我国商业银行在向综合化和国际化发展过程中,应根据自身情况确立市场与业务定位,有所为有所不为,努力发挥自身长处,实施更加体现核心竞争力的差异化经营战略。     

石油储量价值评价中价格级差分级模型的设计

从资源所有者的角度看，石油储量价值由该储量的价格级差和成本级差构成。针对石油储量的价值评价工作，分析并确定了影响石油资源价值的价格级差因素及其次因子的构成，进而就这些因子形成了价格级差分级的模型。     

How Do Investors' Expectations Drive Asset Prices?

Based on an extension of the process of investors' expectations to stochastic volatility we derive asset price processes in a general continuous time pricing kernel framework. Our analysis suggests that stochastic volatility of asset price processes results from the fact that investors do not know the risk of an asset and therefore the volatility of the process of their expectations is stochastic, too. Furthermore, our model is consistent with empirical studies reporting negative correlation between asset prices and their volatility as well as significant variations in the Sharpe ratio.     

International Rent Sharing and Domestic Labour Markets: A Macroeconomic Analysis

Compared to international trade relations relatively little is known about the role foreign direct investment linkages play in the transmission of disturbances from one country to the next. Inspired by the microevidence on profit sharing within multinational corporations and within industries, we investigate for six countries whether a cross-border rent-sharing phenomenon can be identified at the macroeconomic level. The rent-sharing hypothesis implies that an increase in foreign profitability should boost wages and/or employment in the domestic economy. We find corroborative evidence for Belgium, France, Germany, the Netherlands and the United Kingdom. US labour market conditions, by contrast, are not affected by changes in profitability in other countries. JEL no. E32, F23, F40, J23, J31     

Group competition for rents

This paper examines rent dissipation in a two-stage group rent-seeking contest without a predetermined distribution rule. the rent in this setting exhibits both public and private good characteristics depending on the stage of the contest. Focusing on the relationship between group size and aggregate rent seeking we find that social waste depends not only on total numbers but also on the distribution of population across groups. We show that group size asymmetry acts to reduce rent dissipation.