35 research outputs found
Contribution of a time-dependent metric on the dynamics of an interface between two immiscible electro-magnetically controllable Fluids
We consider the case of a deformable material interface between two
immiscible moving media, both of them being magnetiable. The time dependence of
the metric at the interface introduces a non linear term, proportional to the
mean curvature, in the surface dynamical equations of mass momentum and angular
momentum. We take into account the effects of that term also in the singular
magnetic and electric fields inside the interface which lead to the existence
of currents and charges densities through the interface, from the derivation of
the Maxwell equations inside both bulks and the interface. Also, we give the
expression for the entropy production and of the different thermo-dynamical
fluxes. Our results enlarge previous results from other theories where the
specific role of the time dependent surface metric was insufficiently stressed.Comment: 25 page
JIMS Discussion Paper Series DP 280109
We conjecture that the mobility of academic scientists increases the propensity of
such agents to engage in academic entrepreneurship. Our empirical analysis is based
on a survey of researchers at the Max Planck Society in Germany. We find that
mobile scientists are more likely to become nascent entrepreneurs. Thus, it appears
that citizenship and foreign-education are important determinants of the early stages
of academic entrepreneurship.Jerusalem Institute for Market Studie
The Internationalization of Science and its Influence on Academic Entrepreneurship
We conjecture that the mobility of academic scientists increases the propensity of such agents to engage in academic entrepreneurship. Our empirical analysis is based on a survey of researchers at the Max Planck Society in Germany. We find that mobile scientists are more likely to become nascent entrepreneurs. Thus, it appears that citizenship and foreign-education are important determinants of the early stages of academic entrepreneurship.Academic Entrepreneurship, Human Capital, Scientific Mobility, Knowledge Transfer, Immigrant Entrepreneurship
Long-wave instabilities of non-uniformly heated falling films
info:eu-repo/semantics/publishe
Marangoni effect on the instability of non-uniformly heated falling liguid films
Rapport nr ESA SP-454info:eu-repo/semantics/publishe
Coupling between Marangoni and Rosensweig instabilities
Two semi-infinite incompressible and immiscible viscous fluids of infinite lateral extent
are considered in the gravity field. One of them is ferromagnetic and the other is a usual
Newtonian liquid. Such a system is submitted to a magnetic field normal to the reference
flat surface, which separates the two bulks. Developing the linear stability analysis, we
show that the Rosensweig critical values for transverse waves remain unaffected by a
solutal or thermal Marangoni instability