National labour market institutions interact across national boundaries when product markets are global. Labour market policies can thus entail spill-overs, a fact widely ignored in the academic literature. This paper studies the effects of wage subsidies in an international duopoly model with unionised labour markets. We document both positive and negative spill-over effects and discuss the be...

We present a theoretical study of superconductivity of polarons in the Hubbard-Holstein model. A residual kinematic interaction proportional to the square of the polaron hopping energy between polarons and phonons provides a pairing field for the polarons. We find that superconducting instability in the dwave channel is possible with small transition temperatures which is maximum in the large t...

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In the Resource Public Key Infrastructure (RPKI), resource certificates completely obscure names or any other information that might be useful for contacting responsible parties to deal with issues of certificate expiration, maintenance, roll-overs, compromises, etc. This document describes the RPKI Ghostbusters Record containing human contact information that may be verified (indirectly) by a ...

Several series of prehistoric implements in animal hard tissues, either from ancient and recent excavations, were studied by the typological and technological points of views. Their morpho-typological description was in many cases associated to microscopic study of surface modifications, often allowing identification of traces related to manufacture. This technological information in some cases...

PRMA, a packetized multiple access scheme for transmitting over short range radio channels, is a promising scheme to implement in a cellular system. PRMA requires little central control and allows hand-overs with minimal base station intervention. However when mobile voice terminals move from one cell to another, they forfeit the slots reserved for them and, in addition, encounter hand-off dela...

Spatially-varying, non-linear image warping has gained growing interest due to the appearance of image domain warping applications such as aspect ratio retargeting or stereo remapping/stereo-to-multiview conversion. In contrast to the more common global image warping, e.g., zoom or rotation, the image transformation is now a spatially-varying mapping that, in principle, enables arbitrary image ...

Trade and investment liberalisation in tobacco products oVers no benefits for tobacco control. Thus, if trade and investment liberalisation—as embodied in international agreements or viewed as an economic process—may harm tobacco control, as we believe it might, then trade and investment liberalisation in tobacco is an unhealthy and inappropriate public policy. We support the resolution of the ...

We present a study on using storytelling for teaching skills to low-income workers in the developing world. Taking a cue from work on using dramatized stories and video to promote technology use and agricultural and HIV/AIDS education, we investigated storytelling’s ability for teaching lowliteracy populations. We created a series of videos to teach domestic workers in urban India bed-making an...

National labour market institutions interact across national boundaries when product markets are global. Labour market policies can thus entail spill-overs, which suggest that there are benefits from international policy coordination. This paper studies the effects of wage subsidies in an international duopoly model with unionized labour markets. The authors document both positive and negative ...