devaluation investment and growth in ldcs abstract this paper examines the short and long run effects of devaluation in a model where following structuralist theories investment is treated as output of a composite good produced by combining domestic and imported components in fixed proportions introducing investment goods of this type alters a number of results most notably the marshall lerner condition is neither necessary nor sufficient for an expansionary outcome and under simple and plausible conditions a devaluation may worsen the payments balance

budget constrained frontier measures of fiscal equality and efficiency in schooling equality and efficiency are key issues in educational reform here the authors analyze the efficiency and equality consequences of various school finance reforms using a cost indirect output distance function this function readily models multiple output production under conditions of budgetary constraint and provides a natural measure of performance that is closely related to farrell type measures of efficiency the analysis suggests that despite school district inefficiency finance reforms can affect student achievement however any potential gains in output from redistribution are dwarfed by the potential gains from increased efficiency more strikingly the analysis demonstrates that budgetary reforms designed to equalize expenditures could actually increase the inequality of student achievement

trading volume maturity and natural gas futures price volatility important characteristics of the natural gas spot and futures markets are discussed the relationship between the variance of price change or volatility of the natural gas futures price and maturity of the futures contract and the volume of trading in the futures contact is also discussed and estimated it is found that the volume of trade rather than maturity explains the variance of the volatility it is also discovered that past levels of volume of trade influence current variability of price volatility but that past variability of price volatility has much less of an influence on current levels of trading

some models for estimating technical and scale inefficiencies in data envelopment analysis in management contexts mathematical programming is usually used to evaluate a collection of possible alternative courses of action en route to selecting one which is best in this capacity mathematical programming serves as a planning aid to management data envelopment analysis reverses this role and employs mathematical programming to obtain ex post facto evaluations of the relative efficiency of management accomplishments however they may have been planned or executed mathematical programming is thereby extended for use as a tool for control and evaluation of past accomplishments as well as a tool to aid in planning future activities the ccr ratio form introduced by charnes cooper and rhodes as part of their data envelopment analysis approach comprehends both technical and scale inefficiencies via the optimal value of the ratio form as obtained directly from the data without requiring a priori specification of weights and or explicit delineation of assumed functional forms of relations between inputs and outputs a separation into technical and scale efficiencies is accomplished by the methods developed in this paper without altering the latter conditions for use of dea directly on observational data technical inefficiencies are identified with failures to achieve best possible output levels and or usage of excessive amounts of inputs methods for identifying and correcting the magnitudes of these inefficiencies as supplied in prior work are illustrated in the present paper a new separate variable is introduced which makes it possible to determine whether operations were conducted in regions of increasing constant or decreasing returns to scale in multiple input and multiple output situations the results are discussed and related not only to classical single output economics but also to more modern versions of economics which are identified with contestable market theories

estimating the efficiency of the system of healthcare financing in achieving better health this paper contributes to the effort to model and measure how the method of financing of health expenditure affects the efficiency with which better health can be achieved the focus is on the health system efficiency at the country level which provides an alternative to the work done in the who in this regard the approach uses frontier techniques as in the who studies however the paper appeals to the economic index number theory of quantity and productivity indexes which have well established axiomatic properties and provides a means for aggregating multiple health output proxies without having to attach arbitrary weights this allows the proposal of a specification that embeds health sector performance in a broader index of economic inputs and outputs and allows for comparisons across countries and time

policies to move from stabilization to growth although some discussions of stabilization see growth as more or less an assured product of appropriate stabilization this paper argues that there is no guarantee that stabilization will lead to growth it may result in stagnation the paper discusses the essentials of stabilization including inflation targets fiscal policy monetary policy exchange rates and incomes policy and suggests that two areas of structural reform deregulation including trade reform and reform of the financial sector can play a central role in the long run success of a stabilization effort the paper concludes that countries that have experienced protracted high inflation financial instability and payments crises probably will have a difficult and protracted transition to growth and that external resources will be necessary as a continuing feature of the transition sustained external support in the form of long term loans heavily conditioned on the tangibility and credibility of domestic progress in adjustment will help provide a bridge by which flight capital may return and foreign direct investment may be encouraged to take advantage of fresh opportunities

contractionary devaluation in the southern cone the case of chile abstract this paper discusses the effects of a currency devaluation on output employment and the trade balance in a small open economy chile the structure of the foreign trade sector in terms of price elasticities the sectoral differences in relative domestic value added intensities across exports and import competing industries and the degree of wage indexation are the main determinants in our model of the impact of devaluation a simulation carried out with a computable macro model for chile shows a currency devaluation to be contractionary in the short to medium run

estimating a health production function for the us some new evidence this study reports some new evidence on the impact of medical care socioeconomic lifestyle and environmental factors on the health status of the population of the usa the results show that additional medical care utilization is relatively ineffective in lowering mortality and increasing life expectancy the most important factors that influence death rates are related to socioeconomic status and lifestyle the results suggest that health care policy which focuses primarily on the provision of medical care services and ignores larger economic and social considerations may do little to benefit the nation s health

decomposition of total factor productivity in world health production a stochastic frontier approach while countries around the globe have increased spending on health care economists and policy makers have raised concerns over the productivity and efficiency of health care this article applies a stochastic frontier approach to address this issue using data from 141 countries for the period 1993 to 1997 from the perspective of productivity change our results suggest that gains in population health will be greater provided that more resources are allocated to investment in human capital we also show that the scale component accounts for 65 70 of the productivity change that is omitting the scale component in our case will result in a significant underestimation of the decline in the productivity of world health production we do not find evidence supporting the hypothesis that production frontiers differ between organization for economic cooperation and development oecd and non oecd countries however the change in productivity and scale elasticity do vary significantly between these countries

does the s p500 index lead the crude oil dynamics a complexity based approach abstract taking the complex property of nonlinear feedback connectivity into consideration the goal of this paper is to apprehend the interdependences between the financial and energy sectors our contribution is both theoretical and methodological we conduct a multivariate analysis employing nonlinear tools namely the partial transfer entropy and the asymmetric mackey glass causality test in particular we build a system comprising the petroleum complex crude oil gasoline and heating oil the s p500 index and the 1 month futures spot spread for crude oil by adopting a rolling window approach we observe a persistent lead lag relationship between the s p500 index and the market participants expectations for crude oil from 2004 to 2009 depending on the bubble period in the stock market it appears that the resulting coupling becomes subject to the deterioration of global economic activity induced by large common shocks

the new structuralist critique of the monetarist theory of inflation the case of the philippines abstract developing economies may be characterized by long production lags advanced outlays to finance working capital needs will therefore assume primary importance with weak commodity and equity markets the financing is usually funded by credit either from the legal banking sector or from an underground curb market monetary and credit contraction espoused by monetarists as a key policy for controlling inflation will increase the cost of financing working capital needs this has an immediate short run stagflationary impact coming from the supply side of the economy the study uses a one sector macro model to test this hypothesis on the philippines with annual data from 1958 to 1980 the results give empirical support to the claim that the working capital cost push supply side effect is strong enough which means that austerity measures may require a heavy and costly recession before price inflation can be brought down

wealthier is healthier we estimate the effect of income on health using cross country timeseries data on health infant and child mortality and life expectancy and income per capita we use instrumental variables estimates using exogenous determinants of income growth to identify the pure income effect on health isolated from reverse causation or incidental association the long run income elasticity of infant and child mortality in developing countries lies between 0 2 and 0 4 using these estimates we calculate that over a half a million child deaths in the developing world in 1990 alone can be attributed to the poor economic performance in the 1980s

us natural gas markets how efficient are they in this communication we discuss some key features of the natural gas cash and futures markets for natural gas in the usa we also summarize some important and interesting problems in these markets for example the market does not appear to be informationally efficient throughout the usa this lack of efficiency has been addressed by the establishment of a second futures contract market there is also a very active unregulated derivatives market in which options and swaps are bought and sold although the market has changed significantly to better respond to changes in market conditions there are still problems in the way that pipeline space is allocated by pipeline companies who still own the pipe to those companies that have rights to this space there are also problems in that prices for gas and transport are not transparent to many buyers and sellers moreover there are also important idiosyncracies and industry practices that impede progress none the less the different parts of the industry with different interests and expertise and the regulatory authority continue to work at crafting rules to improve business behaviour and performance

are medical prices declining evidence from heart attack treatments we address long standing problems in measuring medical inflation by estimating two types of price indices the first a service price index prices specific medical services as does the current cpi the second a cost of living index measures a quality adjusted cost of treating a health problem we apply these indices to heart attack treatment between 1983 and 1994 more frequent reweighting and accounting for price discounts lowers the measured price change for heart attacks by three percentage points annually accounting for quality change lowers it further we estimate that the real cost of living index fell about 1 percent annually

trade reform aggregate investment and capital flight on credibility and the value of information abstract in this paper we demonstrate that uncertainty about future policy reversals coupled with irreversible investment confers an option value to foreign exchange and may lead to capital flight and a fall in aggregate investment after a trade reform the analysis focuses on the value of information and the credibility of the policy reform the conclusion points to a potential role for international institutions to prevent such problems

unbiasedness and time varying risk premia in the crude oil futures market abstract this paper presents some empirical evidence on market efficiency and unbiasedness in the crude oil futures market and some related issues on the basis of monthly observations on spot and futures prices of the west texas intermediate wti crude oil several tests are carried out on the relevant hypotheses the evidence suggests that futures prices are neither unbiased nor efficient forecasters of spot prices furthermore a garch m 1 1 model reveals the existence of a time varying risk premium

debt crisis adjustment policies and capital formation in developing countries where do we stand abstract this paper documents the decline in investment rates observed in developing countries after 1982 and explores analytically and empirically the factors contributing to explain it the paper focuses on the impact of macroeconomic adjustment and reform measures on private investment particularly in latin america and east asia and underscores the importance of macroeconomic uncertainty policy credibility and potential coordination failures in shaping the response of investment to the changes in economic incentives brought about by structural reforms the analysis concludes with some policy recommendations to improve the design of sustainable growth oriented adjustment programs

multiple expectational equilibria under monopolistic competition this paper shows that a monopolistically competitive economy with real investment can have multiple rational expectations equilibria one is associated with entrepreneurs optimistic expectations about future demand another with entrepreneurs pessimism it also shows that an optimistic expectational equilibrium pareto dominates a pessimistic equilibrium an investment subsidy can be beneficial both by reducing the original underinvestment distortion and by changing firms expectations from pessimistic to optimistic the most important assumption is increasing returns to scale and monopolistic competition makes increasing returns consistent with each producer s optimization

technical efficiency of european railways a distance function approach this study has two principal objectives the first objective is to measure and compare the performance of european railways the second objective is to illustrate the usefulness of econometric distance functions in the analysis of production in multioutput industries where behavioural assumptions such as cost minimization or profit maximization are unlikely to be applicable using annual data on 17 railways companies during 1988 1993 multioutput distance functions are estimated using corrected ordinary least squares cols the resulting technical efficiency estimates range from 0 980 for the netherlands to 0 784 for italy with a mean of 0 863 the distance function results are also compared with those obtained from single output production functions where aggregate output measures are formed using either total revenue or a tornqvist index the results obtained indicate substantial differences in parameter estimates and technical efficiency rankings casting significant doubt upon the reliability of

rational expectations risk and efficiency in energy futures markets abstract conditional on the hypothesis that energy futures markets are efficient or rational this paper uses fama s 3 regression approach to measure the information in energy futures prices about future spot prices and time varying premiums the paper finds that the premium and expected future spot price components of energy futures prices are negatively correlated and that most of the variation in futures prices is variation in expected premiums

the measurement and sources of technical inefficiency in the indonesian weaving industry production function models are estimated with a time series of cross section data on indonesian weaving establishments the sources of technical inefficiency are investigated three firm attributes are identified as being potentially related to firm efhciency tbey are firm ownership age and size the importance of these attributes as sources of inefficiency in the indonesian weaving industry is investigated and the implications of the find ings discussed

how effective is public health expenditure in improving overall health a cross country analysis the primary emphasis of this paper is on seeking some justification for the worldwide phenomenon of increasing government involvement in health care the disability adjusted health expectancy dale rankings of countries in the world health report 2000 ranked wealthier countries with a typically large public sector involvement in health care higher on the list contrary to the possible implications for this ranking this paper finds that the comparatively higher dale in wealthier countries is not a result of greater public health expenditures in the middle income and less developed countries however there is some evidence of effective public involvement in health care

testing the efficiency of the futures market for crude oil in the presence of a structural break the efficiency of the futures market for crude oil has been the subject of significant study with the basis regression representing a popular methodology however the parameters of this model are subject to a structural break casting doubt on any conclusion regarding the efficiency of the futures market to address this problem this article employs a simple generalization which is capable of testing the efficiency of a futures market in the presence of a structural break using this approach strong evidence of inefficiency is found in the one month futures contract for west texas intermediate for the period between 1985 and 2013 which is otherwise not detected