modelling seasonality in residential water demand the case of tunisia this article proposes to model seasonal patterns of residential water demand using the techniques of seasonal integration and cointegration the methodology is applied to quarterly aggregate time series data for tunisia 1980 2007 applying the same increasing multi step pricing scheme in the whole country first a seasonal cointegration analysis demonstrates the relevance of a pricing policy that increases the size of the lower consumption block in summer second the nonseasonal cointegration analysis reveals a relatively high price elasticity for the highest consumption block therefore we also propose to increase the tariff progressivity to promote water savings this modified pricing scheme will help to achieve goals of environmental protection and social equity

how delegation improves commitment abstract mccallum 1995 american economic review papers and proceedings 85 2 207 211 conjectures that delegation merely relocates the commitment problem but does not solve it this holds if optimal ex ante policies do not change if additional information becomes available however with a flexibility credibility trade off delegation improves credibility

rules and discretion with noncoordinated monetary and fiscal policies the time inconsistency of optimal monetary policy is due to the effects of tax distortions thus the issue of how to improve upon the time consistent suboptimal monetary policy is related to that of the coordination of monetary and fiscal policy we present a model with three players the central bark the fiscal authority and wage setters in which distortionary taxes are explicitly modelled we show that binding commitments to monetary rules are not necessarily welfare improving if monetary and fiscal policy are not coordinated we also examine the effects of different degrees of independence of the central bank

the eurosystem the u s federal reserve and the bank of japan similarities and differences the paper provides a systematic comparison of the eurosystem the u s federal reserve and the bank of japan these monetary authorities exhibit somewhat different status and tasks which reflect different historical conditions and national characteristics however widespread changes in central banking practices in the direction of greater independence and increased transparency as well as changes in the economic and financial environment over the past 15 20 years have contributed to reduce the differences among these three world s principal monetary authorities a comparison based on simple over the counter policy reaction functions shows no striking differences in terms of monetary policy implementation

a method to select between periodic cointegration and seasonal cointegration the seasonal and the periodic cointegration models are non nested models that can explain complex patterns in univariate seasonal time series this paper proposes a simple model selection method which is based on an application of the usual test procedures for cointegration to the annual series per season

the monetary policy of the european central bank the first six years of ecb monetary policy are examined using a general framework that allows central bankers to weight differently positive and negative deviations of inflation output and the interest rate from their reference values the empirical analysis on synthetic euro area data suggests that the objective of price stability is symmetric whereas the objectives of real activity and interest rate stabilizations are not output contractions imply larger policy responses than output expansions of the same size while movements in the interest rate are larger when the level of the interest rate is relatively high the hypothesis of m3 growth rate targeting is rejected

the inflation bias when the central bank targets the natural rate of unemployment abstract this paper studies the proposition that an inflation bias can arise in a setup where a central banker with asymmetric preferences targets the natural unemployment rate preferences are asymmetric in the sense that positive unemployment deviations from the natural rate are weighted more or less severely than negative deviations in the central banker s loss function the bias is proportional to the conditional variance of unemployment the time series predictions of the model are evaluated using data from g7 countries econometric estimates support the prediction that the conditional variance of unemployment and the rate of inflation are positively related

measuring the time inconsistency of us monetary policy this paper offers an alternative explanation for the great inflation of the 1970s by measuring a novel source of monetary policy time inconsistency in the presence of asymmetric preferences the monetary authorities generate a systematic inflation bias through the private sector expectations of a larger policy response in recessions than in booms the estimated fed s implicit target for inflation has declined from the pre to the post volcker regime the average inflation bias was about 1 before 1979 but this has disappeared over the last two decades because the preferences on output stabilization were large and asymmetric only in the former period

preference disaggregation 20 years of mcda experience abstract the philosophy of preference disaggregation in multicriteria decision aid systems mcda is to assess infer global preference models from the given preferential structures and to address decision aiding activities this paper presents a panorama of preference disaggregation methods and summarises the most important results and applications over the last 20 years

inflation contracts and inflation targets under uncertainty why we might need conservative central bankers this paper compares the relative effectiveness of inflation contracts and inflation targets in the presence of uncertainty regarding the central bank s preferences and the underlying output target the model explains why discretion may be superior to a delegation solution we also show that there might be the need to combine inflation targets and contracts with the appointment of a rogoff type conservative central banker if contracts and targets cannot be made state contingent and that less flexible inflation targets may be appropriate with uncertain central bank preferences

modeling a multi attribute utility newsvendor with partial backlogging abstract traditional newsvendor models usually focus on single profit maximization or cost minimization approaches however making a monetary estimate of the consequences of lost sales as a result of shortages is often a difficult task for many practitioners besides there is still a lack of an explicit account of decision making judgments on the multiple consequences of making decisions with regard to order quantities in order to deal with this problem this paper presents a multi attribute utility model for the newsvendor problem with regard to profit the impacts of service level on corporate image and on customers goodwill and the impact on the environment arising from the disposal of unsold products demand is partially backlogged according to a decreasing exponential function of the waiting time the fundamental principles and limitations related to the application of the model built are also discussed

stakeholder interviews with two mavt preference elicitation philosophies in a swiss water infrastructure decision aggregation using swing weighting and disaggregation using uta gms abstract we used two types of preference elicitation methods based on multi attribute value theory mavt for a wastewater infrastructure decision in switzerland we aimed to register the implementation impacts of two preference elicitation philosophies aggregation disaggregation in a large real world case and give guidance on these elicitation approaches for practitioners we conducted two series of face to face interviews with the same ten the first interview set used direct aggregation preference elicitation methods which decomposed an additive value model into the elicitation of weights smart swing variant and marginal value functions bi section method in the second interview series indirect disaggregation was used based on uta gms the weights and marginal value functions for 19 objectives were later simultaneously inferred with linear programming from pairwise comparisons of hypothetical alternatives one aim was to design the uta gms comparisons for many objectives further we aimed to identify differences and commonalities of the two methods concerning the elicited preferences the mavt evaluation results of six real world wastewater infrastructure alternatives and the stakeholders and analysts feedbacks similar best alternatives indicate convergence of the two elicitation methods this demonstrates the applicability of the uta gms elicitation procedure to a very complex decision problem however the two elicitation methods were perceived differently by the respondents and required different effort from the analysts for individual stakeholders preferences were sometimes rather different between the interviews which could be largely explained by the constructive nature of preference formation this indicates the importance of supporting stakeholder learning in the application of mcda

conflict dissolution in the public sector a case study abstract the construction of a new railway link to the port of lisbon has been postponed many times as a result of a conflict of different viewpoints held by various public stakeholders namely between the municipality of lisbon and the lisbon railway node bureau while the portuguese railway company has assumed a more flexible attitude over recent years three groups of solutions totalling nine alternative projects have been proposed by each of these three actors but none has been simultaneously accepted by all the three the development of the urbanisation plan for alc ntara the zone of the city where the railway line links to the port has presented an opportunity to try to dissolve the conflict this paper describes the multicriteria approach followed to support the creation of a new good win win compromise solution by the planning team based on the study of the consequences of the existing alternatives in particular we describe the structuring phase of the study and the use of a disaggregation aggregation approach to take into account the different value systems of the stakeholders

issues in new political economy an overview a brief overview of the historical background nature and rapid growth in volume and scope of new political economy since the early 1980s is provided the paper continues with some general reflections on the strengths and weaknesses of the new political economy approach illustrated by the other contributions to this special issue of the journal of economic surveys the final section summarises these contributions

a theory of ambiguity credibility and inflation under discretion and asymmetric information this paper develops a positive theory of credibility ambiguity and inflation under discretion and asymmetric information the monetary policymaker maximizes his own politically motivated objective function that is positively related to economic stimulation through monetary surprises and negatively related to monetary growth the relative importance he assigns to each target shifts stochastically through time his current preference trade off is known to him but not to the public when choosing the state contingent path of money growth for the present and the future the policymaker compares the benefits from current stimulation with the costs associated with higher future inflation expectations current monetary growth conveys information to the public about future money growth because there is persistence in the policymaker s objectives although expectations are rational information is imperfect because monetary control procedures are imprecise as a result the public cannot correctly distinguish persistent changes of emphasis on different policy objectives from transitory monetary control errors the public becomes aware of changes gradually by observing past monetary growth credibility is defined in terms of the speed with which the public recognizes changes in the objectives of the policymaker credibility is lower the noisier monetary control and the more stable the objectives of the policymaker looser monetary control and a higher degree of time preference on the part of the policymaker induce him to produce higher and more variable monetary growth when the policymaker is free to determine the accuracy of monetary control he does not always choose the most effective control available in spite of the fact that monetary surprises always have an expected value of zero the reason is that ambiguous control procedures enable the policymaker to generate positive surprises when he cares more than on average about economic stimulation he leaves the inevitable negative surprises for periods in which he cares more about inflation prevention this result provides an explanation for the fed s preference for ambiguity recently documented by goodfriend 1986 the policymaker is more likely to pick more ambiguous control procedures the more uncertain his objectives and the higher his time preference the paper also provides a theoretical underpinning for the well documented crosscountry positive correlation between the level and the variability of inflation

does the barro gordon model explain the behavior of us inflation a reexamination of the empirical evidence abstract this paper tests the predictions of the barro gordon model using us data on inflation and unemployment to that end it constructs a general game theoretical model with asymmetric preferences that nests the barro gordon model and a version of cukierman s model as special cases likelihood ratio tests indicate that the restriction imposed by the barro gordon model is rejected by the data but the one imposed by the version of cukierman s model is not reduced form estimates are consistent with the view that the federal reserve weights more heavily positive than negative unemployment deviations from the expected natural rate

price level targeting vs inflation targeting a free lunch price level targeting without base drift and inflation targeting with base drift are compared under commitment and discretion with persistence in unemployment price level targeting is often said to imply more short run inflation variability and thereby more employment variability than inflation targeting counter to this conventional wisdom under discretion a price level target results in lower inflation variability than an inflation target if unemployment is at least moderately persistent a price level target also eliminates the inflation bias under discretion and as is well known reduces long term price variability society may be better off assigning a price level target to the central bank even if its preferences correspond to inflation targeting a price level target thus appears to have more advantages than commonly acknowledged

inflation targeting under asymmetric preferences this paper develops and estimates a game theoretical model of inflation targeting where the central banker s preferences are asymmetric around the targeted rate specifically positive deviations from the target can be weighted more or less severely than negative ones in the central banker s loss function it is shown that some of the previous results derived under the assumption of symmetry are not robust to this generalization of preferences estimates of the central banker s preference parameters for canada sweden and the uk are statistically different from the one implied by the commonly used quadratic loss function

time inconsistency of monetary policy empirical evidence from polls while the basic model of time inconsistency put forward by barro and gordon barro r j gordon d b 1983 journal of political economy 91 589 610 is widely accepted now several authors have expressed serious doubts about the empirical relevance of the model in explaining inflation interestingly enough few attempts have been made so far to test for the existence of inflationary biases empirically theory predicts a positive correlation between a monetary authority s relative preference for the high employment goal and inflation using polling data from six countries as a proxy for public preferences we provide empirical evidence in favor of the barro gordon model

how important is precommitment for monetary policy we quantify the welfare differential between precommitment and discretionary monetary policy in three estimated models of the u s economy by calculating the permanent deviation of inflation from target that in welfare terms is equivalent to moving from discretion to precommitment using a range of reasonable central bank preference parameters this inflation equivalent ranges from 0 05 to 3 6 percentage points with a mid point of either 0 15 or 1 1 5 percentage points depending on the model in addition to the degree of forward looking behavior we show that the existence of transmission lags and or information lags is crucial for determining the welfare gain from precommitment

optimal policy intervention and the social value of public information svensson 2006 argues that morris and shin s 2002 analysis is contrary to what is claimed actually pro transparency this paper re examines the issue but with an important modification to the original morris and shin framework recognizing that central banks impact on the economy not only indirectly via their public announcements but also directly through their policy actions we consider the social value of public information in the presence of active policy intervention our results strengthen morris and shin s conclusions considerably in particular we find that public disclosure of the central bank s information is always undesirable

agricultural product development using multidimensional and multicriteria analyses the case of wine abstract multicriteria analysis and multidimensional statistical methods can collaborate and offer new prospects in the fields of decision support and management in general this paper presents a survey based methodology which combines a multicriteria model for the consumer s preference analysis as well as classical data analysis models to design agricultural products the new products are developed in such a way that they eventually achieve the maximum possible market share a real study for the athenian wine market is presented for illustration the paper concludes with some further reccomendations

implausible alternatives in eliciting multi attribute value functions abstract many methods to elicit preference models in multi attribute decision making rely on evaluations of a set of sample alternatives by decision makers using orthogonal design methods to create this set of alternatives might require respondents to evaluate unrealistic alternatives in this paper we perform an empirical study to analyze whether the presence of such implausible alternatives has an effect on the quality of utility elicitation using a new approach to measure consistency we find that implausible alternatives in fact have a positive effect on consistency of intra attribute preference information and consistency with dominance but do not affect inter attribute preference information

delegation time inconsistency and sustainable equilibrium this paper analyzes the effectiveness of delegation in solving the time inconsistency problem of monetary policy using a microfounded general equilibrium model where delegation and reappointment are explicitly included into the government s strategy the method of chari and kehoe 1990 sustainable plans journal of political economy 98 4 783 802 is applied to characterize the entire set of sustainable outcomes countering mccallum s 1995 two fallacies concerning central bank independence american economic review 85 2 207 211 second fallacy delegation is able to eliminate the time inconsistency problem with the commitment policy being sustained under discretion for any intertemporal discount rate

crucial issues concerning central bank independence abstract this paper argues first that it is inappropriate to presume that central banks will in the absence of any tangible precommitment technology inevitably behave in a discretionary fashion that implies an inflationary bias furthermore there is no necessary tradeoff between flexibility and commitment second to the extent that the absence of any precommitment technology is nevertheless a problem it will apply to a consolidated central bank plus government entity as well as to the central bank alone thus contracts between governments and central banks do not overcome the motivation for dynamic inconsistency they merely relocate it several implications are discussed

optimal sustainable monetary policy in recent monetary policy literature optimal commitment policy or its variant from a timeless perspective has been studied with emphasis on welfare gains from policy commitment regardless of its time consistency problem called a stabilization bias with an optimizing model used in the literature we examine sustainable equilibrium of chari and kehoe 1990 and study optimal sustainable policy the policymaker s strategy in the best sustainable equilibrium in the absence of commitment technologies calibrated versions of the model show that the ramsey equilibrium generated by optimal commitment policy is not achievable suggesting that optimal sustainable policy is the desirable policy benchmark from the viewpoint of policy operationality the latter policy involves some issues due to its dependence on the entire history of lagrange multipliers on a sustainability constraint as a guidepost for actual policy conduct that contains no such issues and attains higher social welfare than discretionary policy does we propose a sustainable policy conducted by following a policy rule that achieves the best markov equilibrium

corporate failure prediction in the european energy sector a multicriteria approach and the effect of country characteristics this study examines the development of corporate failure prediction models for european firms in the energy sector using a large dataset from 18 countries the construction of the models is based on a multiple criteria decision aid mcda approach taking into account both ordinal criteria and nominal country sector effects the analysis is based on different modeling specifications first traditional financial variables are examined which are then extended with additional country level data related to the economic and business environment as well as data about the energy efficiency policies of the countries and the characteristics of their energy markets and networks the results indicate that energy related attributes have high discriminating power and add valuable information compared to the other attributes

multicriteria decision aid in financial management abstract the financial decisions of an organization are usually included in the context of optimization concerning a long term period there are decisions related to the optimal allocation of funds and decisions related to the optimal financial structure in the short term case the decisions are related to the optimization of stocks cash accounts receivable current liabilities etc the financial theory analyzes these decisions mainly from an optimal point of view the optimal character of such decisions has led researchers to propose operations research techniques to solve the problems that are inherent in such decisions this paper examines the contribution of multicriteria analysis in solving financial decision problems in a realistic context the paper also includes an extensive bibliography on the subject

multiple criteria decision making combined with finance a categorized bibliographic study abstract this paper provides a categorized bibliography on the application of the techniques of multiple criteria decision making mcdm to problems and issues in finance a total of 265 references have been compiled and classified according to the methodological approaches of goal programming multiple objective programming the analytic hierarchy process etc and to the application areas of capital budgeting working capital management portfolio analysis etc the bibliography provides an overview of the literature on mcdm combined with finance shows how contributions to the area have come from all over the world facilitates access to the entirety of this heretofore fragmented literature and underscores the often multiple criterion nature of many problems in finance

fast growing small entrepreneurial firms and their venture capital backers an applied principal agent analysis first the empirical background of the u k venture capital industry is developed using a panel of major u k venture capital funds over the period 1988 92 then a framework for applied principal agent analysis is developed focusing on risk management and information under risk management it explores attitude to risk risk sharing and bearing and the effects of risk bearing on effort under information handling it explores information systems information asymmetries between investor venture capitalist and investee entrepreneur and ways of attenuating them and information variance and costs finally the contract between investor and investee is seen as a device for trading risk and information the implications of this trading for risk bearing effort and efficiency are explored the whole analysis is supported by a detailed case study which reflects current practice in the u k venture capital industry the evidence provides striking confirmation of the applicability of the principal agent model to the venture capital financing of hightech ventures

do markets care who chairs the central bank this paper assesses the effects of central bank governor appointments on financial market expectations of monetary policy to measure these effects we assemble a new dataset of appointment announcements from 15 countries and conduct an event study analysis on exchange rates bond yields and stock prices our main findings are threefold first exchange rates and bond yields display a statistically significant response to the announcement of a new governor especially when the appointee s identity was not anticipated in advance second the reactions are especially pronounced for central banks lacking either independence or a clear nominal anchor third new governors are not generally perceived to lack credibility there is no tendency for announcements to be associated with jumps in inflation expectations

credibility of optimal monetary delegation comment in his recent paper in the american economic review jensen 1997 argues that delegation of monetary policy to an independent central bank which acts as an agent for the government does not mitigate the problem of time inconsistency but merely relocates it

targeting inflation with a role for money this paper demonstrates how a target for money growth can be beneficial for an inflation targeting central bank acting under discretion because the growth rate of money is closely related to the change in the interest rate and the growth of real output delegating a money growth target to the central bank makes discretionary policy more inertial leading to better social outcomes this delegation scheme is also compared with other schemes suggested in the literature the results indicate that stabilizing money growth around a target can be a sensible strategy for monetary policy although other delegation schemes are often more efficient

optimal central banker contracts and common agency this paper considers the contracting approach to centralbanking in a simple common agency model we suggest thatcentral banker contracts that do not consider the possibilityof more than one principal existing are incomplete contracts such incomplete contracts can be a poor form ofmonetary policy delegation under common agency we develop amodel with two principals society government and ageneric interest group whose objective conflicts withsociety s ex ante preferences by incorporating an inflationarybias we determine when the government offered orinterest group offered contract dominates the central banker sdecision the results largely depend on whether theinterest group offered contract is written in terms of outputor inflation

hybrid inflation and price level targeting in this paper we investigate the properties of monetary regimes that combine price level and inflation targeting we look both at an optimal control and at a simple rule characterisation of these regimes we derive numerical results by modelling the economy as a small scale open economy re model calibrated on uk data we conclude that 1 the relative merits of price level and inflation targeting as well as of mixes of these two depend on particular modelling and policy assumptions and 2 these merits do not always change gradually and or monotonically as we move from one regime to another

monetary stabilisation with nominal asymmetries optimal monetary stabilisation in the standard new keynesian framework usually assumes a policy loss function from outside the model in this paper in contrast the objective arises directly from the model credit constraints and sticky nominal debt contracts imply that monetary stabilisation has asymmetric impacts depending on whether consumers are credit constrained the policy problem is to maximise some weighting of the expected utility of the different types of consumer features of optimal stabilisation are derived that do not appear to be far out of line with empirical evidence for many countries but that clearly conflict with standard loss function results

cheating for the common good in a macroeconomic policy game abstract this paper presents a simple repeated game model of interaction between an optimizing government and the private sector two polar cases are considered a the private sector is represented by a single agent and b there is a continuum of heterogenous atomistic private agents in both cases the government starts each repetition by making a non binding announcement about its future actions the players have complete and perfect information with one exception the private agents do not know whether or not the government will act as announced thus each private agent i either behaves with probability i as if it trusted the announcement or plays with probability 1 i as a stackelberg leader after observing the reaction of the private sector the government implements the actual policy measures finally the private agent s update i as a function of the payoffs received we show that although the government s announcements are never respected acting as if they were true leads to an outcome that simultaneously improves the situation of the government and of those players that trust it compared to the standard equilibrium solutions an overwhelming majority of private agents very rapidly learns to behave as if the announcements were true the other agents also experience higher payoffs due to an herding effect the fact that the announcements are always reneged is crucial for the solution to be pareto improving these results are in stark contrast to the conclusions usually presented in the related economic literature

including sustainability criteria into inventory models research on sustainability performance has considerably enriched operations management literature in recent years however work with quantitative models is still scarce this paper contributes by revisiting classical inventory methods taking sustainability concerns into account we believe that reducing all aspects of sustainable development to a single objective is not desirable we thus reformulate the classical economic order quantity model as a multiobjective problem we refer to this model as the sustainable order quantity model then a multi echelon extension of the sustainable order quantity model is studied for both models the set of efficient solutions pareto optimal solutions is analytically characterized these results are used to provide some insights about the effectiveness of different regulatory policies to control carbon emissions we also use an interactive procedure that allows the decision maker to quickly identify the best option among these solutions the proposed interactive procedure is a new combination of multi criteria decision analysis techniques

inflation targeting a new framework for monetary policy he world s central bankers and their staffs meet regularly in venues from basle to washington to share ideas and discuss common problems perhaps these frequent meetings help explain why changes in the tactics and strategy of monetary policymaking such as the adoption of money growth targets in the 1970s the intensification of efforts to reduce inflation in the 1980s and the recent push for increased institutional independence for central banks tend to occur in many countries more or less simultaneously whatever their source major changes in the theory and practice of central banking are of great importance for both individual countries and the international economy in this article we discuss a new strategy for monetary policy known as inflation targeting which has sparked much interest and debate among central bankers and monetary economists in recent years this approach is characterized as the name suggests by the announcement of official target ranges for the inflation rate at one or more horizons and by explicit acknowledgment that low and stable inflation is the overriding goal of monetary policy other important features of inflation targeting include increased communication with the public about the plans and objectives of the monetary policymakers and in many cases increased accountability of the central bank

a model of venture capitalist investment activity the paper describes the activities of venture capitalists as an orderly process involving five sequential steps these are 1 deal origination the processes by which deals enter into consideration as investment prospects 2 deal screening a delineation of key policy variables which delimit investment prospects to a manageable few for in depth evaluation 3 deal evaluation the assessment of perceived risk and expected return on the basis of a weighting of several characteristics of the prospective venture and the decision whether or not to invest as determined by the relative levels of perceived risk and expected return 4 deal structuring the negotiation of the price of the deal namely the equity relinquished to the investor and the covenants which limit the risk of the investor 5 post investment activities the assistance to the venture in the areas of recruiting key executives strategic planning locating expansion financing and orchestrating a merger acquisition or public offering 41 venture capitalists provided data on a total of 90 deals which had received serious consideration in their firms the questionnaire measured the mechanism of initial contact between venture capitalist and entrepreneur the venture s industry the stage of financing and product development ratings of the venture on 23 characteristics an assessment of the potential return and perceived risk and the decision vis i vis whether to invest the modal venture represented in the database was a start up in the electronics industry with a production capability in place and seeking 1 million median in outside financing there is a high degree of cross referrals between venture capitalists particularly for the purposes of locating co investors factor analysis reduced the 23 characteristics of the deal to five underlying dimensions namely 1 market attractiveness size growth and access to customers 2 product differentiation uniqueness patents technical edge profit margin 3 managerial capabilities skills in marketing management finance and the references of the entrepreneur 4 environmental threat resistance technology life cycle barriers to competitive entry insensitivity to business cycles and down side risk protection 5 cash out potential future opportunities to realize capital gains by merger acquisition or public offering the results of regression analyses showed expected return to be determined by market attractiveness and product differentiation r2 0 22 perceived risk is determined by managerial capabilities and environmental threat resistance r2 0 33 finally a discriminant analysis correctly predicted in 89 4 of the cases whether or not a venture capitalist was willing to commit funds to the deal on the basis of the expected return and perceived risk the reactions of seven venture capitalists who reviewed the model s specification were used to test its validity

the performance of periodic autoregressive models in forecasting seasonal u k consumption the parameters of a periodic model are allowed to vary according to the time at which observations are made periodic autoregressive models are fitted to the quarterly values of seasonally unadjusted real nondurable consumers expenditure for the united kingdom and its components the periodic model offers no improvement over conventional specifications if the aggregate is modeled directly on the other hand periodic models generally perform well for the components which contain additional seasonal information the choice between a periodic or nonperiodic specification is also shown to have an important influence on the resulting dynamic properties

decision support systems for semi structured buying decisions abstract using recent research on evolutionary systems design and on the process of learning preferences in multicriteria decision making a decision support system dss is proposed for semi structured buying decisions the general decision process model involves four phases and feedbacks among them 1 1 selecting criteria and an admissible set of alternatives products 2 2 searching for consistency between the decision maker s wholistic preference and an analytical model of it 3 3 assesing a compromise preference model 4 4 evaluating the alternative products using the compromise preference model an illustrative example purchasing a car is presented we conclude with some brief remarks on implementation of the dss on microcomputers and extension to the case of several decision makers

political influence and the dynamic consistency of policy garfinkel department of economics university of fornia 3151 social science plaza irvine ca 92697 lee artment of economics university of california 3151 soscience plaza irvine ca 92697 and international monfund 700 19th street nw washington dc 20431 we k without implicating avinash dixit amihai glazer chel grossman luisa lambertini stergios skaperdas an ymous referee and seminar participants at the university alifornia los angeles california state universityerton and the 1998 winter meetings of the econometociety for helpful comments on previous drafts of this r which had been circulated under the title political ipline and the dynamic consistency of policy the s expressed in this paper are those of the authors and ld not be attributed to the international monetary fund see torsten persson and guido tabellini 1990 for a ul survey of this literature

seasonal cointegration in macroeconomic systems case studies for small and large european countries abstract six variable vector autoregressive systems consisting of macroeconomic series are investigated parallel data series for four european countries are used austria germany federal republic finland and the united kingdom all data series are not seasonally adjusted the aim of the paper is to show that most of the series are better modeled using stochastic seasonality and seasonal unit roots models than simple deterministic models of seasonal structures as a second step seasonal cointegration in the systems is studied it is shown that all four economies display seasonal cointegration as well as usual cointegration

the credibility of monetary reform new evidence the history of monetary policy is characterised by crisis and reform the paper is dedicated to an explanation of what makes monetary reforms successful a cross sectional econometric analysis is chosen to deal with this problem it is based on a standard macroeconomic model of commitment and credibility as the dependent variable we calculate a post reform inflation rate the exogenous variables are the degree of legal commitment the constraining influence of institutions and a new variable for ex ante credibility of the reform the paper allows for the conclusion that monetary commitment the consideration of institutional constraints and abstinence from the money press are crucial for the success of a monetary reform

what is wrong with taylor rules using judgment in monetary policy through targeting rules it is argued that inflation targeting is best understood as a commitment to a targeting rule rather than an instrument rule e ither ageneral targeting rule explicit objectives for monetary policy or a specific targeting rule a criterion for the forecasts of the target variables to be fulfilled essentially the equality of the marginal rates of transformation and substitution between the target variables targeting rules allow the use of judgment and extramodel information are more robust and easier to verify than optimal instrument rules and they can nevertheless bring the economy close to the socially optimal equilibrium

on the impossibility of central bank independence four decades of time and intellectual inconsistency the intellectual justification for modern central banking time inconsistency celebrated its fortieth anniversary in 2017 alongside the cambridge journal of economics however the key progeny of the time inconsistency literature central bank independence has fundamental flaws that have been thus far neglected in mainstream research in the first instance the argument for independence relies on a utilitarian rather than institutional analysis one that neglects the genesis of central banks and their relation to other institutions within a country second central bank independence neglects the complex interdependencies of the global monetary and financial system applying an institutional lens to the concept of central bank independence i conclude that independence fails under the reality of globalization as much as it does in a domestic context with central banks reliant on all manner of political institutions they are never really independent operationally or in terms of policy

central banker contracts incomplete information and monetary policy surprises in search of a selfish central banker approaching monetary policy as a principal agent problemprovides a useful framework for interpreting alternativedelegation schemes in this paper we consider theeffectiveness of central banker incentive schemes when theprincipal delegates monetary policy through contracts butremains uncertain about the central banker s responsiveness tosuch schemes we adopt a simple principal agent model andassume that the central banker s trade off between socialwelfare and the incentive scheme is private information weconsider two types of central bankers one who responds to theincentive scheme selfish and one who does not and onlycares about social welfare benevolent we demonstratethat when a benevolent central banker accepts a contractdesigned for a selfish central banker positive inflationsurprises occur and output exceeds its natural rate wefurther show that a benevolent central banker with aninflation bias has an incentive to masquerade as selfish mechanisms exist that solve that problem by achievingpreference revelation we consider a simple mechanism indominant strategies that induces the benevolent type eithernot to breach or not to accept the appointment contract inthe first place this multi period mechanism works with eitherinflation targets or the appointment of a conservativecentral banker our results suggest that more complicatedincentive schemes embedded within broader constitutionalarrangements are required in the presence of privateinformation for them to work effectively

recession aversion output and the kydland prescott barro gordon model abstract this paper explores the relationship between the kydland prescott barro gordon model and models with asymmetric policy preferences while both yield an inflation bias recession aversion dampens the output effects of contractionary supply shocks some inflation may therefore reflect policy preferences

a preference disaggregation decision support system for financial classification problems abstract classification is one of the most extensively studied problems in the fields of multivariate statistical analysis operations research and artificial intelligence decisions involving a classification of the alternative solutions are of major interest in finance since several financial decision problems are best studied by classifying a set of alternative solutions firms loan applications investment projects etc in predefined classes this paper proposes an alternative approach to the classical statistical methodologies that have been extensively used for the study of financial classification problems the proposed methodology combines the preference disaggregation approach a multicriteria decision aid method with decision support systems more specifically the financial classification finclas multicriteria decision support system is presented the system incorporates a plethora of financial modeling tools along with powerful preference disaggregation methods that lead to the development of additive utility models for the classification of the considered alternatives into predefined classes an application in credit granting is used to illustrate the capabilities of the system

a multi criteria evaluation framework for tradable white certificate schemes recent years have witnessed regained political momentum on energy efficiency and interest in establishing markets is growing as a result tradable white certificate twc schemes of differing design have been implemented in great britain italy and france much attention is being paid to justifying and evaluating such schemes in this paper we develop and apply a multi criteria framework for evaluating twc schemes an approach that attempts to cover their individual design features a broad evaluation is conducted regarding energy saving and environmental effectiveness economic efficiency cost effectiveness transaction costs political feasibility administrative burden and technical change the results show the design and performance of twc schemes to be case and context specific and generalisations are thus inappropriate this evaluation supports the cost effectiveness modelled for the british scheme and the assumption that a twc scheme is an economically efficient policy instrument for the other more complex twc schemes more data and experience are needed to judge their ex post merit on the whole the proposed multi criteria evaluation requires considerable data and complementary methods however the framework improves the understanding of the broad effects and attributes of twc schemes it deals with various empirical and normative aspects that can be applied in their evaluation

the evaluation criteria of the venture capital investment activity an interactive assessment abstract in this paper the modelling of venture capital decision making is being attempted using a multicriteria decision support system the minora system based on the interactive use of the uta ordinal regression model first a review of the literature on the evaluation criteria for venture capital investment is outlined and the general methodology of financing firms is presented then a real world application of the minora system is developed this has been done in a french venture capital firm and concerned the assessment of an analytical evaluation model of firms

a seasonal model of consumption in this paper the authors present strong empirical evidence that the long run income elasticity of u k nondurable consumers expenditure and its short run rate of adjustment both vary across seasons such variability in the behavior of consumers is consistent with the hypotheses that consumers have seasonal preferences and that they exhibit seasonally varying degrees of habit persistence the tests are based on a modified form of the error correction methodology that allows for seasonally varying slope coefficients simulations for the dynamic responses of the authors model illustrate the important policy implications of these results coauthors are r c bladen hovell a p l chui denise r osborn and j p smith copyright 1989 by royal economic society