In this paper, we study the propagation properties of twisted Hermite–Gaussian Schell- model (THGSM) beams propagating in a uniaxial crystal orthogonal to optical axis. We derive concrete analytical expression cross-spectral density (CSD) function and simulate evolution characteristics such beams, including normalized spectral intensity, degree coherence (DOC), effective beam width. find that i...

Cylindrical vector beams and vortex beams, two types of typical singular optical characterized by axially symmetric polarization helical phase front, possess the unique focusing property ability carrying orbital angular momentum. We discuss formation mechanisms such in few-mode fibers under basis show recent advances generating techniques that are mainly based on long-period fiber gratings, mod...

This article presents Navier type closed-form solutions for static bending, elastic buckling and free vibration analysis of symmetric functionally graded (FG) sandwich beams using a hyperbolic shear deformation theory. The beam has FG skins and isotropic core. Material properties of FG skins are varied through the thickness according to the power law distribution. The present theory accounts fo...

The evolution of B-Factories is discussed, and comments are made about the common features of present-day asymmetric storage ring collider designs. * Work supported by Department of Energy contract DE-AC03-76SF00515. Presented at the 4th International Symposium on Heavy E’lavour Physics, Orsay, France, June 25-29, 1991 There was a symposium Progress on B-Factories the day before the Heavy Flavo...

We find a one-to-one correspondence between full extrinsic symmetric spaces in (possibly degenerate) inner product spaces and certain algebraic objects called (weak) extrinsic symmetric triples. In particular, this yields a description of arbitrary extrinsic symmetric spaces in pseudo-Euclidean spaces by corresponding infinitesimal objects. MSC 2000: 53C50, 53C35, 53C40

the use of unbounded tendons is common in prestressed concrete structures and evaluation of the stress increase in unbonded tendons at ultimate flexural strength of such structure has posed a great challenge over the years. based on the bending experiment for two-span continuous post-tension beams with unbounded tendons and externally applied cfrp sheets, the monitoring of the stress increment ...

The aim of thisscientificworkis to investigate the effect moisture content on behaviour borassus in concrete. At beginning thisstudy, characterisation tests are carried out materials used. These include Nokoue lagoonsand, rolledgravelfrom Mono, concrete and cut-to-length rônier. Afterformulating using DREUX - GORISSE method, Borassus plant reinforcementsweretreated with a hydraulicwaterproof...