Liquidity, infinite horizons and macroeconomic fluctuations

This paper develops a computable dynamic general equilibrium model in which corporate demand for liquidity is endogenously determined. In the model, liquidity demand is motivated by moral hazard, as in Holmström and Tirole (J. Politic. Econom. 106 (1998) 1). As a result of incorporating agency cost and endogenously determined liquidity demand, the model can replicate an empirical business cycle fact, the hump-shaped dynamic response of output, which is seldom observed in standard RBC dynamics. Further, in the model the corporate demand for liquidity from a financial intermediary (credit line, for instance) is pro-cyclical, while the degree of liquidity dependence (defined as liquidity demand divided by corporate investment) is counter-cyclical. These business cycle patterns are consistent with a stylized fact empirically verified in the lending view literature.     

Currency substitution, portfolio diversification, and money demand

Abstract .  We extend the Thomas (1985) dynamic optimizing model of money demand and currency substitution to the case in which the individual has restricted or no access to foreign currency denominated bonds. In this case currency substitution decisions and asset substitution decisions are not separable. The results obtained suggest that the significance of an expected exchange rate depreciation term in the demand for domestic money provides a valid test for the presence of currency substitution. Applying this approach to six Latin-American countries, we find evidence of currency substitution in Colombia, Dominican Republic, and Venezuela, but not in Brazil and Chile.     

Consumption,preferences, and the evolutionary agenda

The purpose of this paper is to provide a preliminary evolutionary account of preferences, consumption and demand. This is particularly relevant for the study of innovation which offers consumers the opportunity to develop new behaviours. The paper approaches this question in two stages. First it recognises the importance of time as well as income constraints on consumer behaviour. Secondly, it develops a behavioural approach to consumption routines in terms of Herrnstein's concept of meloriation. In this account the focus is upon activities for which commodities and time are inputs and, with innovation, time is rescheduled on many fronts. Consumer learning is related to a replicator dynamic process. It is shown how changes in wages, prices and the time required to consume influence the demand for activities.     

我国电力供需平衡周期性震荡的原因及应对策略研究

本文从系统的观点出发．结合电力工业的特点,分析了影响电力供需平衡的主要影响因素及其因果关系,建立了反映电力供给需求动态变化的系统动力学模型,模拟仿真了各种调节手段的运用对电力供应需求系统的影响,并从完善规划、加强需求侧管理两方面提出抑制电力供需周期性震荡的措施与建议。该模型的建立为系统的分析电力供需的动态变化提供了一定的参考和依据。     

Household Debt,Dynamic Stability,and Change in Demand Creation Patterns

This paper examines dynamic stability and demand creation patterns of an economy in the context of the augmentation of household debt. First, we investigate the dynamic characteristics specific to an economy with household borrowing. Second, we reveal how demand creation and economic growth pattern change with the introduction of households' active borrowing. Our results shows that it is more favorable for the stability of an economy to politically control the interest rate on lending rather than to leave it to be determined by private financial institutions. Our results also indicate that even if the demand regime is wage-led, paradoxically, a rise in wage share may not necessarily stimulate economic growth. On the other hand, profit-led growth is more likely.     

An Empirical Study of Dynamic Labor Demand with Integrated Forcing Processes

In this paper, we examine a version of the Sargent (1978) and Kennan (1979) labor demand model under the assumption that the forcing processes are nonstationary. We derive a simple model of dynamic labor demand and highlight the important econometric and time-series implications of the optimization problem. The empirical results are surprisingly favorable and consistent with the underlying dynamic theory. Specifically, we find estimates that imply adjustment costs are about fourfold more important than disequilibrium costs in determining the dynamic demand for labor.     

Dynamic energy demand models with latent equipment

Our approach to energy demand modelling is based on a two-level dynamic analysis. In the short run we consider the stock of energy-using appliances as fixed. Only its intensity of use may change. However, in the long run this stock may vary. The short- and long-run demand equations are integrated into a single-equation dynamic model in which the equipment is ruled out. Our application to the demand for energy in Switzerland shows the power of this simple but flexible model which provides a thorough explanation of past behavior and a firm basis for the exploration of future demand evolution paths.     

Cointegration,error correction and the demand for money in Cyprus

This paper applies the recently developed technique of cointegration to estimate the demand for broad money in the case of Cyprus. Cyprus is an example of a country which does not have a sophisticated financial sector and which faced a severe political shock at a certain point in her history. The hypothesis of instability in the demand for money function cannot be rejected if the effects of this shock are not taken into account. In particular, it is argued that there was a once and for all increase in the income elasticity of this function at the time of the shcock. When this shift is accounted for by the introduction of an appropriate variable in the cointegrating regression the hypothesis of instability in the demand for money is rejected. Two dynamic error correction models are then specified with income and consumption as the scale variables respectively. Non-nested tests are carried out which reveal that consumers' expenditure is a more appropriate scale variable than GDP.     

Adaptive behavior,demand and preferences

This paper extends the work on endogenous change of tastes of Von Weizsäcker to the n-commodity framework and for a general adaptive behavior process. The paper examines the relation between the effect of taste changes to income and price changes. It provides sufficient conditions for stability of the underlying dynamic process, establishes uniqueness of the equilibrium demand vector and some useful relations between the long-run demand functions and the equilibrium short-run demand functions. It is also shown that the long-run demand functions can be rationalized by a utility function if and only if the short-run utility function is such that any good that experiences learning or taste change is separable from all other goods.     

中国居民现金需求研究

该文通过一个动态 Baumol-Tobin 模型来研究中国居民的持币行为,该模型在以下方面改进了已有的研究:建立在动态决策基础之上,引入了货币化因素、居民存货行为以及货币调整成本.模型结果表明:现金需求函数中的变量之间的匹配性至关重要.同时函数的动态结构由债券一现金转换成本与货币调整成本函数的具体形式决定.最后,我们分别使用季度与月度数据估计了基于交易的误差修正模型(ECM),结果验证了该种设定下名义利率影响显著、通货膨胀率影响不显著的结论,同时表明名义利率的影响随时间而增强.     

Multinationals,Information Update,and Product Adaptation *

This paper develops a dynamic model of decision making by multinational firms. The firm chooses between exporting and producing abroad when it expands the market. Bayes learning is incorporated into this model in addition to fixed cost and transport cost Production in a foreign country gives the firm new information about the demand function. This information is applied to adjust the firm's expectation as well as output choice in the future. This process not only reduces the risk encountered by a firm in a foreign market, but also increases acceptance of the product which the firm manufactures. This paper concludes even if producing abroad loses money in the first period, the firm may still choose to set up plants in foreign countries rather than exporting, due to the dynamic information advantage associated with going multinational. [F23,F21]     

Money demand in China in the reform period: an error correction model

Based on integration and cointegration test findings, this paper constructs an error correction (ECM) model to evaluate the dynamic adjustment process of money demand in China in the reform period (1979 to 1990). The cointegration tests suggest that some long-run relationship exists among money demand, real income, price, and the real interest rate. The ECM model shows that the dynamic adjustment process of money demand maintains stable and significant relationships to most of its determinants.     

An application of dynamic specifications of factor demand equations to interfuel substitution in US industrial energy demand

In a recent paper, Jones (1995) [A dynamic analysis of the interfuel substitution in US industrial energy demand. J. Bus. Econ. Stat. 13 (4), 459–465] presents a dynamic analysis of interfuel substitution in US industry energy demand. The author concludes that a dynamic linear logit model is ‘superior' to a comparable dynamic translog model. The latter in fact violates concavity conditions whilst the logit formulation does not. This paper shows first of all that the dynamic formulation of the translog used in Jones (1995) is mis-specified. In fact, a parsimonious error-correction model (ECM) ‘dominates' alternative dynamic formulations, amongst which the partial adjustment mechanism used by the author. The ECM is able to generate optimal estimates of long-run and short-run elasticities, and it satisfies the concavity conditions of the cost function. Further, the theoretical framework used in this paper is the one recently proposed by Urga (1996) [On the identification problem in testing dynamic specification of factor demand equations. Econ. Lett. 52, 205–210] and Allen and Urga (1998) [Derivation and estimation of interrelated factor demands from dynamic cost function. Forthcoming in Economica]. It allows one to identify all coefficients (long-run and short-run) of the dynamic formulation via the joint estimation of the ‘effective' (short-run) cost function and the set of factor demand equations. This strategy solves, amongst other things, the parameter identification problem within the set of demand equations themselves, an issue which was originally noted by Anderson and Blundell (1982) [Estimation and hypothesis testing in dynamic singular equation systems. Econometrica, 1559–1571], re-addressed by Friesen (1992) [Testing dynamic specification of factor demand equations for US manufacturing. Rev. Econ. Stat. LXXIV (2), 240–250] and, more recently, by Urga (1996) and Allen and Urga (1998).     

Simultaneous estimation of income and price elasticities of export demand,scale economies and total factor productivity growth for Brazil

This article focuses on a growth model in which (unlike other models) low (high) export demand elasticities and the fact that developing countries are importers of capital goods help explaining the slow (high) growth of these countries in the transition and in the steady state. The question arises whether export demand elasticities are low or high. For answering this question, export demand elasticities for the case of Brazil are obtained by estimation of the model. As a by-product of estimating the model, we obtain estimates for total-factor productivity growth and for scale economies. Based on the results from estimation we calculate steady-state growth rates, engine and handmaiden effects of growth as well as dynamic steady-state gains from trade. The model and the results are discussed in regard to several strands of literature.     

Income distribution, market size and the evolution of industry

An industry typically experiences initial mass entry and later shakeout of producers over its life cycle. However, the timing of the evolution varies substantially across markets. By exploring the dynamic interactions between technology progress and demand diffusion, our theory suggests that the cross-market differences of industrial evolution are largely the result of underlying demand factors. Particularly, higher consumer income or larger market size tends to drive faster demand diffusion and earlier industry shakeout. A comparative study on the US and UK television industries supports the theoretical findings.     

An evaluation of excess demand,actual cost and normal cost pricing hypotheses using non-nested tests

This paper has emperically analyzed three versions(zero lag,geometric lag and almon lag) of three price change hypotheses – namely the excess demand, actual cost and the normal cost hypothesis – the goal being to select the hypothesis that describes the underlying price dynamics for manufactured goods. The rival models are specified as non-nested alternatives and each version is estimated by using an efficient estimator. The traditional discrimination criteria which clearly reject the zero lag version, are found to be impotent in discriminating between the dynamic versions of the models. A sequential cross-evaluation of the two dynamic versions using both pairwise and multiple non-nested hypothesis tests proposed by Davidson and MacKinnon reveals a systematic domination by the almon version of normal cost pricing over both the excess demand and the actual cost pricing mechanisms in the Canadian manufacturing sector during the period 1961:1–87:4. This result is robust under alternative specifications of the desired stock of inventories for the excess demand model. The finding implies that short–run variations in demand conditions or in actual unit costs arising from temperoary changes in productivity may not paly a significant role in manufactured goods pricing decisions.     

Variety,growth and demand

A dynamic model of demand compatible with a changing composition of the economic system is presented in this paper. Consumers are not expected to have completely formed preferences for radically new objects of consumption. Consumers adopt new goods or services ,created by innovation, only if three barriers are overcome: 1) a critical (minimum) level of income, 2) critical human capital, 3) critical fitness. However, even a new good or service with a fitness higher than that of pre-existing ones, will not be immediately adopted. Consumers'.limited knowledge will slow down the rate of adoption of any new good or service.     

Static and dynamic forecasting of short-run demand for money

Previous studies of static and dynamic out-of-sample simulations of the demand for money have indicated a breakdown in the short-run real money balances over the past 1974 forecast period. Using the varying parameter regression technique, the findings of this paper demonstrate that previous results are misleading because the shift of the money demand is obscured by the constant coefficient estimation technique. Our estimation procedure has not only drastically improved both static and dynamic forecasts but has also solved the missing money puzzle.     

Monopoly with local knowledge of demand function

In this note, we propose a model where a quantity setting monopolist has incomplete knowledge of the demand function. In each period, the firm sets the quantity produced observing only the selling price and the slope of the demand curve at that quantity. Given this information and through a learning process the firm estimates a linear subjective demand curve. We show that the steady states of the dynamic equation are critical points of the objective profit function. Moreover, results depend on convexity/concavity of the demand. When the demand function is convex and the objective profit function has a unique critical point: the steady state is a globally stable maximum; conversely when then steady state is not unique, local maximums are locally stable, while local minimums are locally unstable. On the other hand when the demand function is concave, the unique critical point is a maximum: there can be stability or instability of the critical point and period two cycles around it via a flip bifurcation. Moreover, through simulations we can observe that, with a mixed inverse demand function, there are different dynamic behaviors, from stability to chaos and that we have transition to complex dynamics via a sequence of period-doubling bifurcations. Finally, we show that the same results can be obtained if the monopolist is a price setter.