We introduce a novel non-parametric methodology to test for the dynamical time evolution of the lag-lead structure between two arbitrary time series. The method consists in constructing a distance matrix based on the matching of all sample data pairs between the two time series. Then, the lag-lead structure is searched as the optimal path in the distance matrix landscape that minimizes the tota...

In this paper we develop an economic order quantity model to investigate the optimal replenishment policies for instantaneous deteriorating items under inflation and trade credit. Demand rate is a linear function of selling price and decreases negative exponentially with time over a finite planning horizon. Shortages are allowed and partially backlogged. Under these conditions, we model the ret...

The Rogoff (1985) proposition that it is socially optimal to delegate monetary policy to a central banker that is more inflation averse than society has been widely accepted and implemented in practice. However, there is a literature that argues that if there is an inflation-averse monopoly union in the economy, it is optimal to delegate monetary policy to an “ultra-liberal” central banker, tha...

Flexible inflation targeting has been advocated as a practical approach to the implementation of an optimal state-contingent monetary policy, but theoretical expositions reaching this conclusion have typically abstracted from the fiscal consequences of monetary policy. Here we extend the standard theory by considering the character of optimal monetary policy under a variety of assumptions about...

We compare macroeconomic models of sticky-prices (Calvo and Costsof-adjustment) with flexible price models in terms of optimal seigniorage. This sheds light on the importance of relative price distortions. Sticky-price models with no price dispersion terms have unattractive implications, we argue, when it comes to the derivation of optimal policies. We provide examples where they may imply very...

This paper investigates optimal monetary policy rules when two large countries simultaneously face non-negativity constraints on nominal interest rates. Under policy coordination, domestic optimal monetary policy rules depend on domestic endogenous variables, foreign inflation, and domestic and foreign policy rates when the zero lower bound is never binding. Such policy rules generally lose the...

This paper argues that inflation-targeting central banks should announce explicit loss function with numerical relative weights on output-gap stabilization and use and announce optimal time-varying instrument-rate paths and corresponding inflation and output-gap forecasts. Simple voting procedures for forming the Monetary Policy Committee’s aggregate loss function and time-varying instrument-ra...

This paper analyzes the relationship between money and inflation in a small open economy, where domestic and foreign currencies are perfect substitutes as means of payment. It is shown that, if the path of domestic money supply is such that individuals find it optimal to change the currency in which transactions are settled, there will be an adjustment period during which domestic inflation adj...

Asset prices and the equity premium might reflect doubts and pessimism. Introducing these features in an otherwise standard New-Keynesian model changes in a quite substantial way its normative conclusions. First, following productivity shocks, optimal policy should be very accommodative even to the point to inflate the equity premium. Second, asset-price movements improve the inflation-output t...

introduction: this study aimed to evaluate the effects of four-time inflation of the stent balloon at nominal pressure on optimal stent expansion in resistant lesions. materials and methods: this interventional study was conducted on 39 patients with coronary artery lesions, in whom zotarolimus-eluting stents (n=20), paclitaxel-eluting stents (n=11) and other stents (n=8) were deployed four tim...