Cette revue vise à clarifier les origines des célèbres relations dites de Eddington–Barbier, incontournables dans le domaine du transfert de rayonnement astrophysique. Ces dernières relient, en effet, respectivement l'intensité spécifique et le flux émergents à la valeur de la fonction source à des profondeurs optiques spécifiques dans l'atmosphère...
This work presents the first complete German transcription of the Max Phil X notebook of Kurt Gödel, offered in an open access version to the scholars of the Gödelian community. The original notebook was written in Gabelsberger from March 1943 to January 1944 and it belongs to a series of fifteen notebooks. Some excerpts of these notebooks were tra...
A low temperature calculation for the incommensurate-commensurate transition in a system with a single axis of modulation is performed. The theory is formulated in terms of wall and phonon degrees of freedom. Phonons renormalize the domain wall interaction to larger values. By means of a simple self-consistent calculation scheme the square root law...
Cone fundamentals is the name given to the relative spectral sensitivity of long-wave sensitive, medium-wave sensitive and shortwave sensitive cones. Cone fundamentals represent the spectral absorptances of the retinal photopigments in the cones multiplied by the spectral transmittances of the ocular media through which light passes to reach the re...
Published in Journal of the Optical Society of America. A, Optics, image science, and vision
The generic framework of metamerism implies that the number of sensors is smaller than the dimension of the stimulus. The metameric black paradigm was introduced by Wyszecki [Farbe2, 39 (1953)] and developed by Cohen and Kappauf [Am. J. Psychol.95, 537 (1982)]. Within a multireceptor and multiprimary scheme, we investigate how far the choice of ill...
Published in Physica B: Physics of Condensed Matter
We investigate an ensemble of excitons in a coupled quantum well excited via an applied laser field. Using an effective disordered quantum Ising model, we perform a numerical simulation of the experimental procedure and calculate the probability distribution function P(M) to create M excitons as well as their correlation function. It shows clear ev...
Published in Solid State Communications
Highlights•Spiral ferrimagnetic phases are studied in the 2D mean-field Hubbard model.•The doping vs interaction (n,U) phase diagram displays a spiral ferrimagnetic phase for intermediate U.•For high U, non-spiral ferrimagnetic phases are found.•Spiral ferrimagnetic phases with fixed n emerge in the chemical potential vs U phase diagram.•The ferrim...
Published in Journal of the Optical Society of America. A, Optics, image science, and vision
Any stimulus can be described as composed of two components-a fundamental color stimulus that controls the three cone responses and a metameric black that has no effect on cones but can drive photoreceptors other than cones [e.g., rods and melanopsin expressing retinal ganglion cells (ipRGCs)]. The Cohen and Kappauf [Am. J. Psychol. 95, 537 (1982)]...
In order to build biological tissues spectral characteristics database to be used in a multispectral imaging system a tissues optical characterization bench is developed and validated. Several biological tissue types have been characterized in vitro and ex vivo with our device such as beef, turkey and pork muscle and beef liver. Multispectral image...
Published in BBA - Biomembranes
The effect of incorporation of 3–43 mol% sterol on the lipid order and bilayer rigidity has been investigated for model membranes of dimyristoylphosphatidylcholine or dipalmitoylphosphatidylcholine. 2H NMR spectra and spin-lattice relaxation rates were measured for macroscopically aligned bilayers. The characteristics of spectra obtained at tempera...
