108,365 research outputs found
Flexible Labor and Innovation Performance: Evidence from Longitudinal Firm-Level Data
Firms with high shares of workers on fixed-term contracts have significantly higher sales of imitative new products but perform significantly worse on sales of innoĂÂŹvaĂÂŹtive new products (ââŹĹfirst on the marketââŹ). High functional flexibility in ââŹĹinsider-outsiderâ⏠laĂÂŹbor markets enhances a firmââŹâ˘s new product sales, as do training efforts and highly eduĂÂŹcaĂÂŹĂÂŹted personnel. We find weak evidence that larger and older firms have higher new proĂÂŹduct sales than do younger and smaller firms. Our findings should be food for thought to eco-nomists making unqualified pleas for the deregulation of labor markets.J5;M5;O15;O31;OSA longitudinal dataset;SMEs;innovation performance;new product sales;numerical flexibility
Flexible labor and innovation performance: Evidence from longitudinal firm-level data
Firms with high shares of workers on fixed-term contracts have significantly higher sales of imitative new products but perform significantly worse on sales of innovative new products (âfirst on the marketâ). High functional flexibility in âinsider-outsiderâ labor markets enhances a firmâs new product sales, as do training efforts and highly educated personnel. We find weak evidence that larger and older firms have higher new product sales than do younger and smaller firms. Our findings should be food for thought to economists making unqualified pleas for the deregulation of labor markets.Innovation performance; new product sales; numerical flexibility; functional flexibility; SMEs; OSA longitudinal data
Critical domain-wall dynamics of model B
With Monte Carlo methods, we simulate the critical domain-wall dynamics of
model B, taking the two-dimensional Ising model as an example. In the
macroscopic short-time regime, a dynamic scaling form is revealed. Due to the
existence of the quasi-random walkers, the magnetization shows intrinsic
dependence on the lattice size . A new exponent which governs the
-dependence of the magnetization is measured to be .Comment: 10pages, 4 figure
Intrinsic Cavity QED and Emergent Quasi-Normal Modes for Single Photon
We propose a special cavity design that is constructed by terminating a
one-dimensional waveguide with a perfect mirror at one end and doping a
two-level atom at the other. We show that this atom plays the intrinsic role of
a semi-transparent mirror for single photon transports such that quasi-normal
modes (QNM's) emerge spontaneously in the cavity system. This atomic mirror has
its reflection coefficient tunable through its level spacing and its coupling
to the cavity field, for which the cavity system can be regarded as a two-end
resonator with a continuously tunable leakage. The overall investigation
predicts the existence of quasi-bound states in the waveguide continuum. Solid
state implementations based on a dc-SQUID circuit and a defected line resonator
embedded in a photonic crystal are illustrated to show the experimental
accessibility of the generic model.Comment: 4 pages,5 figures, Comments welcom
Unstable particle's wave-function renormalization prescription
We strictly define two set Wave-function Renormalization Constants (WRC)
under the LSZ reduction formula for unstable particles at the first time. Then
by introducing antiparticle's WRC and the CPT conservation law we obtain a new
wave-function renormalization condition which can be used to totally determine
the two set WRC. We calculate two physical processes to manifest the
consistence of the present wave-function renormalization prescription with the
gauge theory in standard model. We also prove that the conventional
wave-function renormalization prescription which discards the imaginary part of
unstable particle's WRC leads to physical amplitude gauge dependent.Comment: 10 pages, 3 figure
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