This paper uses Tobit models and data for union contracts to examine the extent of downward nominal-wage rigidity in Canada. To be consistent with important stylized facts, the models allow the variance of the notional wage-change distribution to be time-varying and test for menu-cost effects. The empirical results confirm the importance of using a general specification with a timechanging vari...

In this study, we make a major extension of the nonstationary-state or trended hidden Markov model (HMM) from the previous single-trend formulation [2], [3] to the current mixture-trended one. This extension is motivated by the observation of wide variations in the trajectories of the acoustic data in fluent, speaker-independent speech associated with a fixed underlying linguistic unit. It is a...

In this paper, we present quantitative constraints on the scalar eld potential for a general class of in ationary models. (1) We rst consider the reconstruction of the in ationary potential for given primordial density uctuation spectra. Our work di ers from previous work on reconstruction in that we nd a semi-analytic solution for the potential for the case of density uctuations with power-law...

CO2 is customarily used to control ventilation as it a proxy for bio-effluents and pollutants related the presence activity of people in room. However, could not be satisfactory indicator that do have metabolic origin, i.e., emissions from building materials or traffic. A methodology select besides instead presented this article. This sets study (i) suitable location measure air (ii) which para...

During the measurement of friction force, the measured signal generally contains noise. To remove the noise and preserve the important features of the signal, a hybrid filtering method is introduced that uses the mutual information and a new waveform. This new waveform is the difference between the original signal and the sum of intrinsic mode functions (IMFs), which are obtained by empirical m...

Abstract: The Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (CEEMDAN) has been used to propose a new method for filtering time series originating from nonlinear systems. The filtering method is based on fuzzy entropy and a new waveform. A new waveform is defined wherein Intrinsic Mode Functions (IMFs)—which are obtained by CEEMDAN algorithm—are firstly sorted in ascending o...

This paper introduces a simple and easy to implement procedure test for changes in persistence. The time-varying parameter that characterizes persistence under the alternative hypothesis is approximated by parsimonious cosine function. new minimum of t-statistic computed from regression considers set reasonable values frequency term used evaluate properties asymptotic distributions tests are de...