8,313 research outputs found
Search Intensity, Directed Search And The Wage Distribution
We propose a search equilibrium model in which homogenous
rms post wages along with a vacancy to attract job-seekers, while homogenous unemployed workers invest in costly job-seeking. The key innovation relies on the organization of the search market and the search behavior of the job-seekers. The search market is continuously segmented by wage level, individuals can spread their search investment over the di¤erent sub-markets, and search intensity has marginal decreasing returns on each sub-market. We show that there exists a non-degenerate equilibrium wage distribution. The density of this wage distribution is increasing at low wages, and decreasing at high wages. Under additional restrictions, it is hump-shaped, and it can be right-tailed. Our results are illustrated by an example originating a Beta wage distribution.Search e¤ort; Segmented markets; Equilibrium wage dispersion
Prediction of the dynamic oscillation threshold in a clarinet model with a linearly increasing blowing pressure : influence of noise
This paper presents an analysis of the effects of noise and precision on a
simplified model of the clarinet driven by a variable control parameter. When
the control parameter is varied the clarinet model undergoes a dynamic
bifurcation. A consequence of this is the phenomenon of bifurcation delay: the
bifurcation point is shifted from the static oscillation threshold to an higher
value called dynamic oscillation threshold. In a previous work [8], the dynamic
oscillation threshold is obtained analytically. In the present article, the
sensitivity of the dynamic threshold on precision is analyzed as a stochastic
variable introduced in the model. A new theoretical expression is given for the
dynamic thresholds in presence of the stochastic variable, providing a fair
prediction of the thresholds found in finite-precision simulations. These
dynamic thresholds are found to depend on the increase rate and are independent
on the initial value of the parameter, both in simulations and in theory.Comment: 14 page
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