As the optical network evolves from static long haul connection provider to an adaptive and “smart” backbone solution, Optical Burst Switching (OBS) becomes an attractive scheme for its flexibility and efficiency. However, how to reduce data loss is a crucial issue in such an asynchronous and one way reservation system. In this paper, we study one contention resolution strategy in OBS networks:...

It is shown that Einstein-Rosen bridges (wormholes) hypothetical objects that topologically connect separate locations in the Universe can be static solutions of the Einstein equations. The corresponding equations for bridges are reduced to a form convenient for their analysis and numerical solution. The matter forming the bridge must have a sufficiently hard and anisotropic equation of state. ...

Novel field effect transistors with suspended graphene gates are demonstrated. By incorporating mechanical motion of the gate electrode, it is possible to improve the switching characteristics compared to a static gate, as shown by a combination of experimental measurements and numerical simulations. The mechanical motion of the graphene gate is confirmed by using atomic force microscopy to dir...

Structure of diaphragm was defined as a transverse strengthener beam which located between beams or girders to keep section geometry. It plays significant role provide the stability bridge and distribute vertical axial loads. The main objective this study investigate influence construction concrete diaphragms T-beams at different distances on dynamic static behavior T-beam structure. methodolog...

The structure of the bridge crossing span is simulated in order to determine most informative parameters, which need be measured process monitoring system operation. To assess influence structural component integrity on static deflections and dynamic response, damages were introduced into model, by removal a part components. On basis numerical model calculating under moving load, it shown how i...

The two current criteria for diagnosis of left anterior fascicular block (LAFB) were evaluated; they are marked left axis deviation (LAD) and a delay in the time of inscription of the intrinsicoid deflection (ID) in lead aVL asynchronous to V6. From 400 electrocardiograms with a LAD of --30 degrees or greater, 62 percent showed asynchronous activation of the left ventricle. There was only a gen...

In an effort to reduce the incidence of decubitus ulcers among wheelchair users, current work in cushion design concentrates on minimizing the pressure at the buttock-cushion interface. Finite element analysis can show the stress levels throughout the soft tissue between the cushion and the ischial tuberosity and give designers a better indication of the effects of a particular cushion. Finite ...

The vibration of post-buckled fluid-conveying pipe made functionally graded material is analyzed. properties are assumed to be in the thickness direction according power-law distribution. An exact solution obtained for post-buckling deformation with various boundary conditions. linear problem solved around first buckled configuration and natural frequencies three lowest modes obtained. influenc...