PE、PEG指标在选股中的有效性分析

本文推导出计算股票理论期望收益率的计算方法,当获得未来两期盈利预测数据和当期股票价格数据后,即可通过该方法计算出该股的理论期望收益率。同时,通过该模型,输入PE和PEG数据后,也可得到基于PE预测值的期望收益率和基于PEG预测值的期望收益率。通过比较、和三者之间的关系,可知PEG是优于PE的选股指标。     

Endogenous technological change,income distribution,and unemployment with inter-class conflict

This paper presents a Kaleckian growth model that incorporates endogenous technological change. The model endogenously determines the rate of capacity utilization, the rate of economic growth, income distribution, and the employment rate in addition to technological change. The paper shows that whether or not an increase in the relative bargaining power of workers raises the long-run equilibrium unemployment rate depends on which regime is realized in the long-run equilibrium. If, for example, the long-run equilibrium corresponds to the wage-led growth regime, a rise in the relative bargaining power of workers leads to a decline in the unemployment rate. This result is never obtained from the mainstream NAIRU model.     

Capital Accumulation and Innovation as Complementary Factors in Long-Run Growth

We study capital accumulation and innovation as determinants of long-run growth by adding capital to our earlier model of creative destruction. No special functional forms are imposed on the aggregate production function. The equations describing perfect foresight equilibrium are identical to those of the augmented Ramsey-Cass-Koopmans model, except that the rate of technological change is a function of the stock of capital per effective worker. Contrary to previous models, a subsidy to capital accumulation will raise the long-run growth rate. The key assumption is that capital is used in R and D. Some evidence is presented on the capital intensity of R and D.     

Capital in the Twenty-First Century: Reinterpreting the fundamental contradiction of capitalism

At a theoretical level this article discusses Piketty’s hypothesis that the distribution of income and wealth tends to become more concentrated over time when the rate of return on capital is greater than the growth rate of real output. We develop a post Keynesian model of growth and distribution showing that once capital is differentiated from wealth, the increase in income and wealth concentration actually occurs when the rate of valorization of financial and real estate assets is greater than the growth rate of real output, and that this situation may be triggered by financial liberalization.     

Democracy, Governance, and Economic Growth: Theory and Evidence

The paper examines how democracy affects long-run growth by influencing the quality of governance. Empirical evidence is first presented showing that measures of the quality of governance are substantially higher in more democratic countries. A general-equilibrium, endogenous growth model is then built to show how a governance-improving democracy raises growth. In this model, stronger democratic institutions influence governance by constraining the actions of corrupt officials. Reducing corruption, in turn, stimulates technological change and spurs economic growth. Empirical evidence is presented showing that democracy is in fact a significant determinant of total factor productivity (TFP) growth between 1960 and 1990 in a cross-section of countries. But this contribution occurs only insofar as stronger democratic institutions are associated with greater quality of governance.     

On the Invariance of the Rate of Return to Convex Adjustment Costs

The modified golden rule, which relates the rate of return on capital and the growth rate of the capital stock along long-run growth paths that maximize the utility of a representative infinitely lived consumer, is invariant to the introduction of convex capital adjustment costs. Therefore, along balanced growth paths in neoclassical optimal growth models with an exogenous long-run growth rate of capital, the rate of return is invariant to the introduction of convex adjustment costs, though the capital–labor ratio is reduced along such paths. In AK models, convex adjustment costs reduce the growth rate and rate of return on capital. Journal of Economic Literature Classification Number: E2.     

Income,taxes and employer pension contributions

This paper empirically examines the effects of a change in foreign trade regime on productivity growth. Based on a Generalized Leontief factor demand function system, total factor productivity growth (TFPG) rates are calculated for the Turkish rubber industry during a substantial trade liberalization in the 1980s: TFPG was significantly higher following trade liberalization. Technological change was the major contributor to this growth. When a panel data estimation technique is used to explain technological change, the effects of trade liberalization become clearer: a one percentage point increase in the protection level led to more than a one percentage point (1.27) decline in the technological change rate.     

Scale Effects,Savings and Factor Shares in a Human Capital-based Growth Model with Physical Capital Accumulation

Using a balanced-growth model with physical and human capital accumulation, we analyze quantitatively the long-run effects of changes in the savings rate and in income distribution (i.e. the shares of physical and human capital in income) on investment in skill acquisition, income growth, and the ratio of human to physical capital. In the long run, the ratio of physical to human capital is constant, so that these two factor inputs can grow at the same rate. This rate is a function of the economy's exogenous technological and preference parameters and depends positively on the share of skills invested in human capital formation. We also find that population growth is neither necessary nor conducive to economic growth, that the level of real income depends linearly on the level of human capital and that it is independent of population size.     

Addressing causality in the effect of capital account liberalization on growth

Evidence supporting the positive effects of capital account liberalization on growth is mixed at best. Even after conditioning on the quality of domestic financial institutions, a significant number of studies still find no effect. One possible explanation is reverse causation. If low growth countries liberalize in order to spur growth, the observed correlation between growth and liberalization will underestimate the impact of capital account openness. To eliminate this bias, I instrument capital account liberalization with the average level of openness of other countries to capture the “fad” element in financial liberalization. IV estimates indicate a significant positive effect of liberalization on growth, confirming the predictions of economic theory.     

On using relative prices to measure capital-specific technological progress

Recently, Greenwood, Hercowitz and Krusell (GHK) have identified the relative price of (new) capital with capital-specific technological progress. In a two-sector growth model, however, the relative price of capital equals the ratio of the productivity processes in the two sectors. Restrictions from this model are used with data on wages and prices to construct measures of productivity growth and test the GHK identification, which is easily rejected by the data. This raises questions about various measures of the contribution that capital-specific technological progress might make to the economy. This identification also induces a negative correlation between the resulting measures of capital-specific and economy-wide technological change, which potentially explains why papers employing this identification find that capital-specific technological change accelerated in the mid-1970s. We impose structure on the productivity measures based on their long-run behavior and find evidence of a slowdown in productivity in the 1970s that is common to both sectors and an acceleration in the mid-1990s that is exclusive to the capital sector.     

Strategic policies and growth: an applied model of R&D-driven endogenous growth

We introduce and explore a general equilibrium model with R&D-driven endogenous growth, whose antecedents are the models of Romer (1990) [Romer, P.M., 1990. Endogenous technological change. Journal of Political Economy, 98, S71-102] and Grossman and Helpman (1991) [Grossman, G.M., Helpman E., 1991. Innovation and Growth in the Global Economy, The MIT Press, Cambridge]. Utilizing evidence from recent econometric studies on sources of growth, the model also accounts explicitly for cross-border technological spillovers. The model is specified and calibrated to data from Japan, and is solved to obtain both the transitional and the steady-state equilibria. We explore the effects of selective trade and R&D promotion policies on long-run growth and social welfare. The model results suggest that while a strategic trade policy has little effect on re-allocating resources into domestic R&D activities, it can significantly affect the cross-border spillovers of technological knowledge, which, in turn, stimulates growth. We find that trade liberalization may cause the growth rate to fall and lead to a loss of social welfare in the long-run, although it improves welfare in the short-run. R&D promotion policies stimulate growth by inducing private agents to allocate more resources to domestic R&D, as well as to take greater advantage of global R&D spillovers. Here, we find significantly high growth effects together with sizable gains in social welfare at low incidence to tax payers.     

Trade liberalization,wilful credit defaults and bank bribery in a credit-constrained economy

The rising incidence of credit defaults may cause credit crunch. This affects the ability of firms to finance working capital and also fixed capital formation. Naturally, this is a major macroeconomic shock. This paper is an attempt to address the microeconomic foundation of such macroeconomic shock. We provide a theoretical framework to explain the economic rationale behind ‘wilful corporate defaults’ and ‘financial corruption’ in the specific context of trade liberalization. First, we model the behavioural aspects of wilful corporate defaulters and bank officials to determine the bank bribe rate as an outcome of the Nash bargaining process in a two-stage sequential move game. Based on the results of the partial equilibrium framework, we examine aspects of trade liberalization in an otherwise 2 × 2 general equilibrium framework. We also compare the efficacy of punishment strategies to economic incentives to deter credit defaults and banking sector corruption. Methodologically, our analytical model integrates finance capital distinctly from physical capital in Jonesian general equilibrium framework. Interestingly, our findings indicate that there exists a trade-off at equilibrium between curbing credit defaults and bribery. We also find that not all punishment strategies are equally effective at deterring credit defaults if general equilibrium interlinkage effects are carefully dealt with.     

Search frictions, market power, and long-run growth

This paper embeds product market search in an Ak growth model to study the effects of search frictions on market structure, capital accumulation, and long-run growth. The basic hypothesis is that search frictions, in giving rise to market power, result in higher prices and lower output levels. The falling demand for capital stemming from firms cutting back output then lowers the interest rate, dampening capital accumulation and slowing down growth. A decline in search frictions sets the process in reverse, eventually speeding up growth through the change in market structure. In the meantime, the stock market values of firms could fall.     

Technological Change and the Scale of Production

Many manufacturing industries, including the computer industry, have seen large increases in productivity growth rates and have experienced a reduction in average establishment size. A vintage capital model is introduced which can account for this fact. It is shown that a rise in the rate of technological change decreases average plant size; that is, the level of innovation affects firm size. Smaller plants are not more innovative, as has been suggested, but industries with more innovation, as measured by productivity growth, have smaller plants. Journal of Economic Literature Classification Numbers: D2, O3.     

WHAT MAKES INTERNATIONAL CAPITAL FLOWS PROMOTE ECONOMIC GROWTH? AN INTERNATIONAL CROSS‐COUNTRY ANALYSIS

This paper re‐examines the relationship between international capital flows and economic growth within the context of various ‘conditional factors’ that possibly have the potential to influence such relationships. It achieves this by employing panel data for 80 countries that cover 1976–2007. International capital inflow is broken down into foreign direct investments (FDI) and foreign portfolio investments (FPI). We find interesting evidence that only FDI has a positive effect on growth and that FPI has an unfavorable, if not negative, effect on growth. The conditional variables of banking liberalization, high‐income level, twin crises, lower corruption, and human capital mitigate the positive impacts of FDI on growth. In contrast, the middle‐income level and good shareholder protection have a positive effect. As concerns FPI, the level of financial liberalization, being in a Latin American region, the wealth of countries, and market governance all influence the way that FPI affects growth, whereas the conditional variables of twin crises and human capital do not influence the effect of FPI on economic growth.     

Trade liberalization and economic growth: a case study of Iran

We estimate the impact of trade liberalization and physical and human capital accumulation on Iran’s economic growth during the period 1959?2007. Using co-integration techniques and a vector error correction model, we find a unique long-run relationship between economic growth and its major determinants. These determinants include the physical and human capital stock, the labor force, real non-oil exports, and import tariffs. In addition, the short-term error correction dynamics analysis suggests that trade liberalization has a significant long run positive role in dynamic of growth. Our results support the view that the integration of the Iranian economy with the world economy is undoubtedly welfare improving.     

资本回报率增长的最优知识产权保护强度研究——基于82个国家面板数据的实证

基于制度层面分析资本回报率变动的动因有助于探索经济增长新动力。计算82个国家的资本回报率，并基于知识产权保护视角对其变动机制进行分析，得出以下主要结论：①资本回报率增长存在最优知识产权保护强度，但发展中国家的理论最优强度小于发达国家；②发展中国家知识产权保护以远离最优强度状态促进资本回报率提升，发达国家则以接近最优强度状态促进资本回报率提升；③金融危机后，知识产权保护的促进效应在发展中国家更加明显，在发达国家有所弱化；④机制分析显示，知识产权保护通过促进技术创新提升资本回报率。     

ICT-specific technological progress in the United Kingdom

This paper analyses the impact of rapid technological change in the information and communications technology (ICT) sector on economic growth in the United Kingdom. We find that technological progress specific to the ICT sector accounts for around 20–30% of long-run labor productivity growth. We demonstrate that a permanent increase in the growth rate of ICT-specific technological progress will increase the investment expenditure share of GDP but lower the aggregate depreciation rate, while an increase in the return to investment in ICT will increase both the expenditure share and the depreciation rate.     

Corruption and total factor productivity: level or growth effects?

This paper adopts a productivity-based perspective in order to study how corruption conditions the efficiency levels of the economies and their TFP growth rate. It attempts to identify the channels through which corruption can influence productivity growth, whether by conditioning improvements in relative efficiency levels or by shifting the production frontier. The results point out that corruption negatively affects both the levels of efficiency at which the economies perform and the growth rate of TFP, suggesting that the negative impact of corruption on technological progress manifest through its influence on human capital.     

Social status, human capital formation and super-neutrality in a two-sector monetary economy

In this paper, we study how social status affects the impact of monetary policy on the long-run growth rate in a two-sector monetary economy with human capital accumulation, and find that the super-neutrality of money, with regard to the growth rate of the economy depends on the formation of human capital. In an economy with Lucas-type human capital formation, money is super-neutral; however, for an economy in which both physical and human capital are used as inputs for human capital accumulation, the money growth rate will have a positive effect on the long-run economic growth rate. The existence, uniqueness and saddle-path stability of balanced-growth equilibrium are also examined.