We define a universal cycle for a class of n-permutations as a cyclic word in which each element of the class occurs exactly once as an n-factor. We give a general result for cyclically closed classes, and then survey the situation when the class is defined as the avoidance class of a set of permutations of length 3, or of a set of permutations of mixed lengths 3 and 4. Résumé. Nous définissons...

Stabilizer codes obtained via the CSS code construction and the Steane’s enlargement of subfield-subcodes and matrix-product codes coming from generalized ReedMuller, hyperbolic and affine variety codes are studied. Stabilizer codes with good quantum parameters are supplied, in particular, some binary codes of lengths 127 and 128 improve the parameters of the codes in http://www.codetables.de. ...

We use single-particle tracking to study the elastic properties of single microtubules grafted to a substrate. Thermal fluctuations of the free microtubule’s end are recorded, in order to measure position distribution functions from which we calculate the persistence length of microtubules with contour lengths between 2.6 and 48 μm. We find the persistence length to vary by more than a factor o...

l’homme est toujours sous le regard des 'autres', c’est sa condition permanente au cours de  son existence. pour montrer cette situation humaine, sartre, philosophe existentialiste et écrivain français le plus connu du xxe siècle, a choisit le théâtre duquel nous avons choisi deux pièces: huis clos et les mouches. dans ces pièces, chaque personnage tente de juger 'l’autre' en le comparant à lui...

When rails are laid in a railway track, small gaps are left between the ends of adjoining rails to allow for the expansion of the rails when the temperature rises. Rail joints are provided to form a continuous rail path which are normally laid in standard lengths bolted together by fishplates. When two rail joints are exactly opposing each other, they are called square &#10&#10(side by side) jo...

When rails are laid in a railway track, small gaps are left between the ends of adjoining rails to allow for the expansion of the rails when the temperature rises. Rail joints are provided to form a continuous rail path which are normally laid in standard lengths bolted together by fishplates. When two rail joints are exactly opposing each other, they are called square (side by side) joints...

In adult male rats, motoneurons of the spinal nucleus of the bulbocavernosus (SNB) have been shown to retract and reextend their dendritic branches in response to systemic androgen deprivation and readministration. Furthermore, other studies have suggested that the dendritic complexity of neurons can be regulated by their targets. To assess whether androgens might act upon the target muscles to...

We automatically predict the maximal number of rule applications, i.e. worst-case derivation lengths of computations, in rule-based constraint solver programs written in the CHR language. The derivation lengths are derived from rankings used in termination proofs for the respective programs. We are especially interested in rankings that give us a good upper bound, we call such rankings tight. W...

Lanthanum (La) doped Ceria (CeO2) has attracted considerable interest as a candidate material for thermal barrier coating (TBC) because of its low thermal conductivity and potential capability to be operated above 1250°C. In this study, La2Ce2O7 powder was synthesized through the ball mill method. The crystal structure of La3+ su...