2,483 research outputs found
A mathematical formalism for the Kondo effect in WZW branes
In this paper, we show how to adapt our rigorous mathematical formalism for
closed/open conformal field theory so that it captures the known physical
theory of branes in the WZW model. This includes a mathematically precise
approach to the Kondo effect, which is an example of evolution of one
conformally invariant boundary condition into another through boundary
conditions which can break conformal invariance, and a proposed mathematical
statement of the Kondo effect conjecture. We also review some of the known
physical results on WZW boundary conditions from a mathematical perspective.Comment: Added explanations of the settings and main result
Molecular gas temperature and density in spiral galaxies
We combine beam-matched CO-13, CO-12 J = 3 yields 2 and J = 2 yields 1 line data to infer the molecular gas excitation conditions in the central 500 to 1600 pc diameters of a small sample of infrared-bright external galaxies: NGC253, IC342, M 83, Maffei 2, and NGC6946. Additional observations of the J = 1 yields 0 lines of C-18O and CO-13 set limits on the opacity of the CO-13 J = 1 yields 0 line averaged over the central kiloparsec of these spiral galaxies
Comparative study between AZERTY-type and K- Hermes virtual keyboards dedicated to users with cerebral palsy
International audienceThe aim of this paper is to compare two virtual keyboards for people with cerebral palsy; many of these users have difficulty performing actions using their upper limbs due to large numbers of unwanted movements. The first is a classical QWERTY type keyboard, called Clavicom NG. The second is the K-Hermes proposed in this paper. K-Hermes is a reduced and monotape keyboard; its entry principles are inspired by the T9 keyboard. The aim of the experiment is to demonstrate the reduced effort and increased speed of typing with the keyboard suggested for people with Cerebral Palsy
Variation of Muscle Quality Parameters within the Longissimus Muscle
Results of this study indicate that significant variation exists for muscle quality traits within the longissimus muscle. It is important to follow a rigidly standardized protocol when obtaining samples for use in pork quality research. The decision on which section to use as an estimate of the composite is not as important as is procedure. Relationships among sections with composite values are high for most quality traits
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