forward contracts for the operation of an electricity industry under spot pricing a study is reported of the use of forward contracts as risk instruments for electricity industries operating under spot pricing forward contracts involve financial transactions or commitments which relate to a physical trade at a later time instance price setting and appropriate participant responses are discussed simulation studies are used to demonstrate that forward contracts offer participants an opportunity to reduce their risk exposure without removing the incentive to respond to higher spot prices

time variation in the inflation passthrough of energy prices from bayesian estimates of a vector autoregression var which allows for both coefficient drift and stochastic volatility we obtain the following three results first beginning in approximately 1975 the responsiveness of core inflation to changes in energy prices in the united states fell rapidly and remains muted second this decline in the passthrough of energy inflation to core prices has been sustained through a recent period of markedly higher volatility of shocks to energy inflation finally reduced energy inflation passthrough has persisted in the face of monetary policy which quickly became less responsive to energy inflation starting around 1985

assessing the case for social experiments rs ecent academic debates pit two alternative approaches to policy evaluation against one another the first is the experimental approach based on the random assignment of accepted program applicants to a recipient or treatment group and a non recipient or control group the second is the nonexperimental or econometric approach that uses a variety of microdata sources statistical methods and behavioral models to compare the outcomes of participants in social programs with those of nonparticipants the central question addressed in this paper is whether or not randomized social experiments aid in securing answers to basic questions about the evaluation of social programs there are many distinct and complementary approaches to the study of the impact of public policy including full general equilibrium analysis of policy impacts tinbergen 1956 auerbach and kotlikoff 1987 shoven and whalley 1992 kydland and prescott 1991 and less ambitious partial equilibrium microeconomic structural research programs such as those designed to estimate the impact of taxes on labor supply both approaches offer answers to many interesting counterfactual policy questions but their credibility rests critically on the quality of the empirical input used to generate their answers

electricity pricing optimal operation and investment by industrial consumers abstract this paper describes ongoing research in the areas of economically efficient electricity pricing and industrial consumer response a new electricity pricing theory is described that incorporates future uncertainty and intertemporal linkages between decisions it indicates that electricity prices should contain two terms short run marginal cost plus a term that reflects how each particular decision is likely to affect future global welfare we explore a practical implementation using spot prices and forward contracts plus financial instruments for risk sharing and decision coordination and a procedure for developing long term pricing policy the operation of industrial plant has been investigated and models developed to optimize plant behaviour in response to spot prices and forward contracts for electricity these models are described and results of simulation studies discussed the studies illustrate the economic efficiency and risk sharing advantages of this advanced tariff structure compared with a conventional time of use tariff

the impact of oil price shocks on the term structure of interest rates in a structural var framework we study the impact of oil price shocks in the global crude oil market on the dynamics of the entire yield curve in four industrialised countries with different positions on the oil market the us canada norway and south korea responses of the term structure factors to oil market shocks are shown to differ contingent on the underlying sources that drive oil price shocks and the country s dependence on oil oil market specific demand shocks result in increases in the level factor in oil importing countries but have no such effect in oil exporting countries oil supply disruptions have short lived negative responses of the slope factors in the us and canada associated with loosening monetary policy whilst demand side shocks tend to lead to increases the slope in all countries overall oil supply and demand shocks jointly account for a considerable amount of the observed variation in the term structure of interest rates

level slope curvature of the sovereign yield curve and fiscal behaviour abstract we study fiscal behaviour and the sovereign yield curve in the us and germany we obtain the latent factors level slope and curvature with the kalman filter and use them in a var with macro fiscal and financial stress variables in the us fiscal shocks generate an immediate response of the short end of the yield curve associated with monetary policy lasting 6 8 quarters followed by a response of the whole yield curve lasting 3 years with an implied elasticity of long term yields of 80 for the government debt shock and 48 for the budget balance shock in germany fiscal shocks have entailed no significant reactions of the yield curve shape and no response of the monetary policy interest rate notably after 1999 only in the case of debt shocks there is a short lived decrease in the medium end of the yield curve in the following 2nd and 3rd quarters

oil prices inflation and interest rates in a structural cointegrated var model for the g 7 countries sharp increases in the price of oil are generally seen as a major contributor to business cycle asymmetries moreover the very recent highs registered in the world oil market are causing concern about possible slowdowns in the economic performance of the most developed countries in this paper a structural cointegrated var model has been considered for the g 7 countries in order to study the direct effects of oil price shocks on output and prices and the reaction of monetary variables to external shocks our results can be summarized as follows i a stationary money demand as suggested by the classic theory of money can be identified for most countries ii according to the estimated coefficients of the structural part of the model for all countries except japan and u k the null hypothesis of an influence of oil prices on the inflation rate cannot be rejected inflation rate shocks are transmitted to the real economy by increasing interest rates iii impulse response analysis suggests for most countries the existence of an instantaneous temporary effect of oil price innovations on prices iv impulse response functions indicate different monetary policy reactions to inflationary and growth shocks v the simulation exercises directed to estimate the total impact of the 1990 oil price shock indicate that for some countries u s a significant part of the effects of the oil price shock is due to the monetary policy reaction function for other countries canada france and italy however the total impact is offset at least in part by an easing of monetary conditions

short and long run marginal cost pricing on their alleged equivalence abstract the equivalence between short run marginal cost srmc and long run marginal cost lrmc in a fully adjusted equilibrium has been proved over and over again in the literature dealing with public utility pricing this basic result has been taken to imply that it is optimal to set prices at lrmc important contributions to this literature are reviewed in this paper the equivalence however is valid only under the very restrictive assumption that the capacity can be varied continuously this means that indivisibilities irreversibilities and durability of investments are ignored where such phenomena exist as in electricity production and distribution pricing according to lrmc is neither theoretically valid nor applicable it is not surprising that it has been difficult for public utilities to define the lrmc concept operationally average cost concepts are used as approximations under these circumstances we find it advisable to dispense with the lrmc concept altogether and rely on pricing based on srmc

economic determinants of the nominal treasury yield curve abstract macroeconomic shocks account for most of the variability of nominal treasury yields inducing parallel shifts in the level of the yield curve we develop a new approach to identifying macroeconomic shocks that exploits model based empirical shock measures technology shocks shift yields through their effect on expected inflation and the term premium shocks to preferences for current consumption affect yields through their impact on real rates and expected inflation for both shocks the systematic reaction of monetary policy is an important transmission pathway we find little evidence that fiscal policy shocks are an important source of interest rate variability

modeling structural breaks in economic relationships using large shocks abstract this paper introduces a new model of structural breaks in the coefficients of economic relationships which allows them to be driven by large past economic shocks the breaks generated by these shocks can be taken to reflect stochastic changes in agents decisions or beliefs triggered by extraordinary economic events our model specifies that both the timing and size of breaks are stochastic the last property of it enables us to investigate qualitative effects that large shocks can have on economic relationships as an empirical application of our model the paper investigates the stability the oil economy relationship since the early sixties from the six large oil shocks identified by our data the paper shows that only the first oil shock at the end of 1973 has caused a major long term adverse effect on economic activity all the large oil price shocks that have happened since then did not have any significant negative effects on the slope of the oil economy relationship

oil shocks and financial systemic stress international evidence abstract by conducting a structural var analysis on the financial systemic stress in 20 countries this paper provides international evidence that oil structural shocks impact not only stress in individual financial markets but also their connectedness the oil structural shocks explain a large fraction of the variation in the connectedness among various financial markets the effect of oil structural shocks on financial systemic stress is largely dependent on the origins of oil price changes and a country s net oil export position in most oil importing economies financial systemic stress is negatively impacted by supply and aggregate demand shocks and positively impacted by oil market specific demand shocks opposite patterns are detected in oil exporting economies the effects of the spillovers are asymmetrically related with market conditions during normal periods more risks are spilled over from the oil market to financial systems but during financial crises the opposite occurs in periods of financial crises and oil price collapses there is noticeable contagion between the oil market and financial systems

business cycles in an oil economy abstract the recent oil price fall has created concern among policy makers regarding the consequences of terms of trade shocks for resource rich countries this concern is not a minor one the world s commodity exporters combined are responsible for 15 20 of global value added we develop and estimate a two country new keynesian model in order to quantify the importance of oil price shocks for norway a large prototype petroleum exporter domestic supply chains link mainland non oil norway to the off shore oil industry while fiscal authorities accumulate income in a sovereign wealth fund oil prices and the international business cycle are jointly determined abroad these features allow us to disentangle the structural sources of oil price fluctuations and how they affect mainland norway the estimated model provides three key results first oil price movements represent an important source of macroeconomic volatility in mainland norway second while no two shocks cause the same dynamics conventional trade channels make an economically less significant difference for the transmission of global shocks to the oil exporter than to oil importers third the domestic oil industry s supply chain is an important transmission mechanism for oil price movements while the prevailing fiscal regime provides substantial protection against external shocks

new keynesian macroeconomics and the term structure this article complements the structural new keynesian macro framework with a no arbitrage affine term structure model whereas our methodology is general we focus on an extended macro model with an unobservable time varying inflation target and the natural rate of output which are filtered from macro and term structure data we obtain large and significant estimates of the phillips curve and real interest rate response parameters our model also delivers strong contemporaneous responses of the entire term structure to various macroeconomic shocks the inflation target dominates the variation in the level factor whereas the monetary policy shocks dominate the variation in the slope and curvature factors

the impact of oil shocks on exchange rates a markov switching approach abstract this paper uses markov switching models to investigate the impact of oil shocks on real exchange rates for a sample of oil exporting and oil importing countries this is an important topic to study because an oil shock can affect a country s terms of trade which can affect its competitiveness we detect significant exchange rate appreciation pressures in oil exporting economies after oil demand shocks we find limited evidence that oil supply shocks affect exchange rates global economic demand shocks affect exchange rates in both oil exporting and importing countries though there is no systematic pattern of appreciating and depreciating real exchange rates the results lend support to the presence of regime switching for the effects of oil shocks on real exchange rates

term premia and inflation uncertainty empirical evidence from an international panel dataset this paper provides cross country empirical evidence on bond risk premia i construct a panel of zero coupon nominal government bond yields spanning ten industrialized countries and nearly two decades i hence compute forward rates and then use two different methods to decompose these forward rates into expected future short term interest rates and term premiums the first method uses an affine term structure model with macroeconomic variables as unspanned risk factors the second method uses surveys i find that term premium estimates declined across countries over the sample period especially in countries that appear to have reduced inflation uncertainty by making substantial changes in the monetary policy frameworks of their central banks during the recent financial crisis term premiums have remained flat and even declined further in some countries perhaps reflecting the effects of quantitative easing actions by many central banks

what central bankers need to know about forecasting oil prices central banks routinely use short horizon forecasts of the quarterly price of oil in assessing the global and domestic economic outlook we address a number of econometric issues specific to the construction of quarterly oil price forecasts in the united states and abroad we show that quarterly forecasts of the real price of oil from suitably designed vector autoregressive models estimated on monthly data generate the most accurate real time forecasts overall among a wide range of methods including quarterly averages of forecasts based on monthly oil futures prices no change forecasts and forecasts based on regression models estimated on quarterly data

oil and the macroeconomy since world war ii all but one of the u s recessions since world war ii have been preceded typically with a lag of around three fourths of a year by a dramatic increase in the price of crude petroleum this does not mean that oil shocks caused these recessions evidence is presented however that even over the period 1948 72 this correlation is statistically significant and nonspurious supporting the proposition that oil shocks were a contributing factor in at least some of the u s recessions prior to 1972 by extension energy price increases may account for much of post opec macroeconomic performance

estimating dynamic models of quit behavior the case of military reenlistment we estimate the effect of financial incentives for reenlistment on military retention rates using a stochastic dynamic programming model we show that the computational burden of the model is relatively low even when estimated on panel data with unobserved heterogeneity the estimates of the model show strong effects of military compensation especially of retirement pay on retention rates we also compare our model with simpler to compute models and find that all give approximately the same fit but that our dynamic programming model gives more plausible predictions of policy measures that affect military and civilian compensation at future dates

power system planning under electricity spot pricing there is a reluctance to discuss power system planning under spot pricing the subject is either seen as an increased part of a utility s entrepreneural activities or it is assumed that planning will go on just as before spot pricing this paper critically examines the four ways of dealing with this subject i extending present supply side cost minimisation ii using joint supply demand side net benefit maximisation iii using entrepreneural ship and iv combinations of these the paper shows which way is likely to be best under various circumstances and suggests future research

a comparison of the effects of exogenous oil supply shocks on output and inflation in the g7 countries a comparison of the effects of exogenous shocks to global crude oil production on seven major industrialized economies suggests a fair degree of similarity in the real growth responses an exogenous oil supply disruption typically causes a temporary reduction in real gdp growth that is concentrated in the second year after the shock inflation responses are more varied the median cpi inflation response peaks after three to four quarters exogenous oil supply disruptions need not generate sustained inflation or stagflation typical responses include a fall in the real wage higher short term interest rates and a depreciating currency with respect to the dollar despite many qualitative similarities there is strong statistical evidence that the responses to exogenous oil supply disruptions differ across g7 countries for suitable subsets of countries homogeneity cannot be ruled out a counterfactual historical exercise suggests that the evolution of cpi inflation in the g7 countries would have been similar overall to the actual path even in the absence of exogenous shocks to oil production consistent with a monetary explanation of the inflation of the 1970s there is no evidence that the 1973 1974 and 2002 2003 oil supply shocks had a substantial impact on real growth in any g7 country whereas the 1978 1979 1980 and 1990 1991 shocks contributed to lower growth in at least some g7 countries jel e31 e32 q43

the dynamics of job separation the case of federal employees summary in this paper we develop a model of workers quit decisions using panel data on a sample of us federal government employees we use maximum likelihood techniques to determine how much of the observed decline in quits with job tenure is a result of declining individual quit propensities state dependence rather than dynamic sample self selection heterogeneity the latter is found to be much more important than the former the effects of relative federal government wages and other variables on quits are also estimated the results are useful for analysing federal compensation policies

oil price pass through into inflation abstract this paper uses data from 19 industrialized countries to investigate oil price pass through into inflation across countries and over time a time varying pass through coefficient is estimated and the determinants of the recent declining effects of oil shocks on inflation are investigated the appreciation of the domestic currency a more active monetary policy in response to inflation and a higher degree of trade openness are found to explain the decline in oil price pass through

empirical evidence on the relationship between the term structure of interest rates and future real output changes when there are changes in policy regimes abstract in this article we test for the structural stability of an output growth forecasting equation that includes the term structure of interest rates as a regressor for the usa and canada we are able to confirm that there is parameter instability as the coefficient associated with the term structure is reduced in size as the policy maker becomes more averse to inflation our empirical results are in accordance with the theoretical predictions

are oil shocks inflationary asymmetric and nonlinear specifications versus changes in regime this paper identifies a structural break in core u s inflation phillips curves such that oil prices contributed substantially before 1981 but since that time pass through has been negligible this characterization is robust to a variety of re specifications and fits the data better than asymmetric and nonlinear oil price alternatives evidence does not support the hypotheses that declining energy intensity or deregulation of energy producing and consuming industries played an important role monetary policy did not itself become less accommodative of oil shocks but may have helped create a regime where inflation is less sensitive to price shocks more generally

spot pricing of electricity arguments and prospects abstract the paper in this issue extend the early literature on spot pricing but differences of opinion still remain between proponents and critics mathematical models designed to prove that spot pricing is socially optimal are unpersuasive regrettably there are no further empirical estimates of the consequences costs and benefits of spot pricing but previous studies suggest that it would be profitable and economic for a significant subset of large industrial users current moves to deregulate and privatize electricity industries are likely to stimulate rather than hinder the adoption of spot pricing

macro factors and the term structure of interest rates this paper presents an essentially affine model of the term structure of interest rates making use of macroeconomic factors and their long run expectations the model extends the approach pioneered by kozicki and tinsley 2001 by modeling consistently long run inflation expectations simultaneously with the term structure application to the u s economy shows the importance of long run inflation expectations in the modeling of long term bond yields the paper also provides a macroeconomic interpretation for the latent factors found in standard finance models of the yield curve the level factor represents the long run inflation expectation of agents the slope factor captures business cycle conditions and the curvature factor expresses a clear independent monetary policy factor

what can survey forecasts tell us about information rigidities a lot we derive common and conflicting predictions from models in which agents face information constraints and then assess their validity using surveys of consumers firms central bankers and professional forecasters we document that mean forecasts fail to completely adjust on impact to shocks leading to statistically and economically significant deviations from the null of full information the dynamics of forecast errors after shocks are consistent with the predictions of models with information rigidities the conditional responses of forecast errors and disagreement among agents can also be used to differentiate between some of the most prominent models of information rigidities

the yield curve and macroeconomic dynamics we show that microfounded dsge models with nominal rigidities can be successful in replicating features of bond yield data including sizeable term premia and volatile long term yields which have previously been considered puzzling in general equilibrium frameworks at the same time sample moments of consumption growth and inflation can be fit relatively well the improved model performance does not arise directly from the presence of nominal rigidities however this feature introduces short run monetary non neutrality so that monetary policy affects consumption dynamics and bond prices a high degree of interest rate smoothing in the policy rule is essential for our results at the core of dynamic macroeconomic models we find equilibrium relationships which describe the allocation of quantities e g consumption and investment and when imperfect competition prevails the setting of prices these equations are typically valid across time and across states of nature and financial assets form the tool that is supposed to ensure their validity financial assets are therefore an integral part of macroeconomic models any well specified model should be able to match financial data as well as macro data it is therefore problematic that microfounded models have had a hard time explaining key features of asset prices the most famous example of this difficulty is the equity premium puzzle but various features of bond yield data have also been char acterised as puzzling in the literature a number of papers including backus et al 1989 donaldson et al 1990 den haan 1995 and chapman 1997 have con cluded that general equilibrium models cannot generate term premia of a magnitude comparable to what we observe in actual data and may not even be capable of producing positive term premia for equity one could argue that fundamentals the expected future profitability of individual firms are unobservable and difficult to evaluate equity prices may therefore be thought to be subject to fluctuations disconnected from the real economy information acquisition fads etc and one could hope that the inability of macroeconomic models to match equity prices does not represent a signal of misspecification this argument is more difficult to construct for bonds bond yields should ultimately reflect expectations of future monetary policy decisions which at least in recent years are arguably more predictable than equity fundamentals thus the ability of macroeconomic models to explain bond prices represents an important test of their empirical performance in this article we revisit the relationship between bond prices and macroeconomic fundamentals contrary to the papers cited above that rely on flexible price models we

the impacts of nonferrous metal price shocks on the macroeconomy in china from the perspective of resource security abstract in recent years the price of international nonferrous metals has undergone drastic fluctuations which could exert significant shock effects on macroeconomic variables based on the perspective of resource security this paper reveals the relationship between the nonferrous metal price shocks and china s macroeconomic variables by establishing a dynamic stochastic general equilibrium dsge model embedded with nonferrous metal consumption and means of production blocks the model is based on the optimal decision making behaviours of three departments that satisfy multiple constraints to realize optimal policy making furthermore the structural vector autoregression svar method is applied to verify the shock effects of nonferrous metal price and obtain more robust results the bayesian results show that there is consistency among nonferrous metal price shocks consumer reference shocks wage bonus shocks technical shocks and price adjusted shocks the impulse response function results indicate that the stimulation of an international nonferrous metal price increase would have significant positive impacts on the macroeconomic variables of investment money supply consumption and total output but negative effects on labour demand in addition the impulse responses of wage levels and the rate of inflation to nonferrous metal price shocks present obvious lagging effects

efficient windows and labor force reduction recently many u s firms have offered window plans that provide bonuses to a group of workers if the worker retires within a specified short time span this paper examines a window plan at a fortune 500 firm and addresses two main issues first what was the effect of the window plan on departures second assuming a variety of possible firm objectives what would be the design of an efficient window plan these questions are addressed using the retirement model in stock and wise 1988a 1988b the model estimated using data for an earlier year predicts well out of sample the subsequent large increase in retirements under the window plan we find that while the firm successfully maximized departures if its goal was to minimize either expected future wage payments or the current cost per induced retirement the firm could have saved more with efficient plans constructed using the model one interpretation is that the firm was primarily interested in reducing the overall size of the labor force or in retiring older employees to allow promotion of younger employees this abstract was borrowed from another version of this item

this is what happened to the oil price macroeconomy relationship abstract many of the quarterly oil price increases observed since 1985 are corrections to even bigger oil price decreases the previous quarter when one looks at the net increase in oil prices over the year recent data are consistent with the historical correlation between oil shocks and recessions

applying a macro finance yield curve to uk quantitative easing we estimate a macro finance yield curve model for both the nominal and real forward curve for the uk from 1993 to 2008 our model is able to accommodate a number of key macroeconomic variables and allows us to estimate the instantaneous response of the yield curve and so gauge the impact of quantitative easing on forward rates we find that 10 year nominal interest rates on average are lower by 46 basis points which can largely be explained by three main channels portfolio balance liquidity premium and signalling but there is no sizeable impact on real interest rates

trade linkages and macroeconomic effects of the price of oil in this paper we assess the impact of oil price shocks on oil producer and oil consuming economies var models for different countries are linked together via a trade matrix as in abeysinghe 2001 as expected we find that oil producers here russia and canada benefit from oil price shocks for example a large oil shock leading to a price increase of 50 boosts russian gdp by about 6 however oil producers are hurt by indirect effects of positive oil price shocks as economic activity in their exporter countries suffers for oil consumers the effects are more diverse in some countries output falls in response to an oil price shock while other countries seem to be relatively immune to oil price changes finally indirect effects are also detected for oil consumer countries those countries which trade more with oil producers gain indirect benefits via higher demand from oil producing countries in general the largest negative total effects from positive oil price shocks are found for japan china the usa finland and switzerland while other countries in our sample seem to have fared quite well during recent positive oil price shocks the indirect effects are negative for russia finland germany and netherlands

a macro finance model of the term structure monetary policy and the economy this paper develops and estimates a macro finance model that combines a canonical affine no arbitrage finance specification of the term structure with standard macroeconomic aggregate relationships for output and inflation from this new empirical formulation we obtain several interesting results 1 the latent term structure factors from finance no arbitrage models appear to have important macroeconomic and monetary policy underpinnings 2 there is no evidence of monetary policy inertia or a slow partial adjustment of the policy interest rate by the federal reserve and 3 both forward looking and backward looking elements play important roles in macroeconomic dynamics

economic determinants of the optimal retirement age an empirical investigation in this paper we examine how the structures of earnings social security and pension benefits affect retirement behavior we use an intertemporal model of labor supply paying special attention to the institutional features of private pensions and social security benefits this theoretical formulation produces comparative dynamic predictions and guides empirical modeling data from a new survey of workers and their income opportunities are used to implement the empirical model on the basis of empirical retirement estimates we conclude that 1 people with higher base wealth retire earlier and 2 those who expect to gain more by postponing retirement retire later

the influence of non pecuniary factors on labor supply the case of navy enlisted personnel this paper expresses the elasticity of labor supply to an occupation in terms of the variances and covariances of the distributions of non pecuniary factors across the alternative occupations we then apply our results to an analysis of reenlistment rates among navy enlisted personnel we argue that those navy skills experiencing a higher incidence of sea duty will have lower pay elasticities this prediction is confirmed empirically using probit analysis

term structure surprises the predictive content of curvature level and slope summary this paper analyzes the predictive content of the term structure components level slope and curvature within a dynamic factor model of macroeconomic and interest rate data surprise changes of the three components are identified using sign restrictions and their macroeconomic underpinnings are studied via impulse response analysis the curvature factor is found to carry predictive information both about the future evolution of the yield curve and the macroeconomy in particular unexpected increases of the curvature factor precede a flattening of the yield curve and announce a significant decline of output more than 1 year ahead copyright 2010 john wiley sons ltd

the effect of separation bonuses on voluntary quits evidence from the military s downsizing this paper analyzes the decision of mid career personnel to voluntarily leave the u s military in response to a financial incentive program a model of the separation decision is tested using data on navy and air force enlisted personnel who were targeted for the buyout in 1992 two alternative estimates are provided one from a fixed effects model and one from a structural annualized cost of leaving model our basic results indicate the financial incentive had a modest effect in inducing additional quits the impact of the separation bonus however was much larger for occupations facing a threat of involuntary layoff

expectation puzzles time varying risk premia and dynamic models of the term structure abstract linear projections of returns on the slope of the yield curve have contradicted the implications of the traditional expectations theory this paper shows that these findings are not puzzling relative to a large class of richer dynamic term structure models specifically we match all the key empirical findings reported by fama and bliss 1987 american economic review 77 4 680 692 and campbell and shiller 1991 review of economic studies 58 495 514 among others within large subclasses of affine and quadratic gaussian term structure models additionally we show that certain risk premium adjusted projections of changes in yields on the slope of the yield curve recover the coefficients of unity predicted by the models key to this matching are parameterizations of the market prices of risk that let the risk factors affect the market prices of risk directly and not only through factor volatilities the risk premiums have a simple form consistent with fama s findings on the predictability of forward rates and are also shown to be consistent with interest rate feedback rules used by a monetary authority in setting monetary policy

accepting an early retirement bonus an empirical study the presence of special early retirement bonuses can change the work incentives of older workers this study applies a pension acceptance model to acceptance of an early retirement pension bonus probabilities of acceptance range from 18 to 33 it also simulates acceptance behavior without the bonus with probabilities of acceptance ranging from 11 to 30

a theory of electricity tariff design for optimal operation and investment this study addresses the problem of balancing supply and demand side operation and investment activities existing theory is extended to cover electricity industry models with uncertainty in future conditions and intertemporal linking such as storage and investment an optimal pricing structure which takes these into account is presented it would induce participants suppliers and consumers to make profit maximizing investment and operation decisions which are socially optimal the structure contains two terms a short run marginal cost pricing as well as a new incentive term to account for the interaction of participants at different time points a probabilistic forecast of pricing structures at future time is required a justification of the result and three simple illustrative examples are given

oil shocks and aggregate macroeconomic behavior the role of monetary policy a recent paper by bernanke gertler and watson 1997 suggests that monetary policy could be used to eliminate any recessionary consequences of an oil price shock this paper challenges this conclusion on two grounds first we question whether the federal reserve actually has the power to implement such a policy for example we consider it unlikely that additional money creation would have succeeded in reducing the fed funds rate by 900 basis points relative to the values seen in 1974 second we point out that the size of the effect that bernanke gertler and watson attribute to oil shocks is substantially smaller than that reported by other researchers primarily due to their choice of a shorter lag length than that used by other researchers we offer evidence in favor of the longer lag length employed by previous research and show that under this specification even the aggressive federal reserve policies proposed would not have succeeded in averting a downturn