We consider the problem of scheduling communication on optical WDM (wavelength division multiplexing) networks using the light-trails technology. We give two online algorithms which we prove to have competitive ratios O(log n) and O(log n) respectively. We also consider a simplification of the problem in which the communication pattern is fixed and known before hand, for which we give a solutio...

This paper examines the implications of on-the-job search for both short-run dynamics of in‡ation and long-run welfare costs of in‡ation in a sticky price model with labour market search frictions. Both unemployed workers and workers with bad jobs can search. Firms can adjust labour at both intensive and extensive margins. On-the-job search gives rise a strong propagation of monetary policy sho...

Rare and Weak models for multiple hypothesis testing assume that only a small proportion of the tested hypotheses concern non-null effects individual are moderately large, so they generally do not stand out individually, example in Bonferroni analysis. Such have been studied quite few settings, some cases studies focused on an underlying Gaussian means model being tested; others, Poisson Binomi...

In this paper we examine whether or not the NKM is …t for the purpose of providing a suitable basis for the conduct of monetary policy through in‡ation targeting. We focus on a number of issues: the dynamic response of in‡ation to interest rates in a theoretical NKM under discretion and commitment to a Taylor rule; the implications for the speci…cation of the New Keynesian Phillips equation of ...

In this paper, the boundedness properties of vector-valued intrinsic square functions and their commutators with \(BMO(\mathbb {R}^{n})\) are discussed. We first show weighted strong-type weak-type estimates in Morrey-type spaces. Then, we obtain analogues endpoint case, establish weak \(L\log L\)-type for these setting Lebesgue Furthermore, prove commutator operators particular, can Morrey spa...

We continue the study of the efficiency of black-box reductions in cryptography. We focus on the question of constructing strong one-way functions (respectively, permutations) from weak one-way functions (respectively, permutations). To make our impossibility results stronger, we focus on the weakest type of constructions: those that start from a weak one-way permutation and define a strong one...

Carlstrom and Fuerst (2005) demonstrate that when investment is added to a new Keynesian model, forward-looking interest rate rules almost always lead to equilibrium indeterminacy, even when the central bank responds strongly to expected in‡ation. In this paper, we show that equilibrium determinacy can be retained with forward-looking rules, as long as there is policy inertia. Strong response t...