576 research outputs found
Ethics, organ donation and tax: a proposal
Five arguments are presented in favour of the proposal that people who opt in as organ donors should receive a tax break. These arguments appeal to welfare, autonomy, fairness, distributive justice and self-ownership, respectively. Eight worries about the proposal are considered in this paper. These objections focus upon no-effect and counter-productiveness, the Titmuss concern about social meaning, exploitation of the poor, commodification, inequality and unequal status, the notion that there are better alternatives, unacceptable expense, and concerns about the veto of relatives. The paper argues that none of the objections to the proposal is very telling
Hvad er vigtig pædagogisk viden om socialt udsatte børn i daginstitutionen? Pædagogstuderendes faglige viden, rettet mod udsatte børn i daginstitutionens pædagogiske arbejde
Tidligere og nuværende forskning, knyttet til pædagogisk arbejde med udsatte børn i daginstitutionens pædagogiske praksis, har i høj grad fokuseret på enten daginstitutionens strukturelle udformning, muligheder og begrænsninger i arbejdet med denne gruppe børn eller på de professionelle pædagogers kompetencer til at udføre det pædagogiske arbejde. Dette forskningsprojekt bidrager imidlertid med en ny og meget relevant vinkel på det pædagogiske arbejde med udsatte børn i daginstitutionen, idet der i herværende sammenhæng sættes fokus på den pædagogiske professionsuddannelse og udforskes, på hvilke måder uddannelsen forbereder de studerende på deres fremtidige arbejde i daginstitutionen med udsatte børn
Robust entanglement generation by reservoir engineering
Following a recent proposal [C. Muschik et. al., Phys. Rev. A 83, 052312
(2011)], engineered dissipative processes have been used for the generation of
stable entanglement between two macroscopic atomic ensembles at room
temperature [H. Krauter et. al., Phys. Rev. Lett. 107, 080503 (2011)]. This
experiment included the preparation of entangled states which are continuously
available during a time interval of one hour. Here, we present additional
material, further-reaching data and an extension of the theory developed in [C.
Muschik et. al., Phys. Rev. A 83, 052312 (2011)]. In particular, we show how
the combination of the entangling dissipative mechanism with measurements can
give rise to a substantial improvement of the generated entanglement in the
presence of noise.Comment: Submitted to Journal of Physics B, special issue on "Quantum Memory
Entanglement generated by dissipation and steady state entanglement of two macroscopic objects
Entanglement is a striking feature of quantum mechanics and an essential
ingredient in most applications in quantum information. Typically, coupling of
a system to an environment inhibits entanglement, particularly in macroscopic
systems. Here we report on an experiment, where dissipation continuously
generates entanglement between two macroscopic objects. This is achieved by
engineering the dissipation using laser- and magnetic fields, and leads to
robust event-ready entanglement maintained for 0.04s at room temperature. Our
system consists of two ensembles containing about 10^{12} atoms and separated
by 0.5m coupled to the environment composed of the vacuum modes of the
electromagnetic field. By combining the dissipative mechanism with a continuous
measurement, steady state entanglement is continuously generated and observed
for up to an hour.Comment: This is an update of the preprint from June 2010. It includes new
results on the creation of steady state entanglement, which has been
maintained up to one hou
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