The melting of the vortex lattice in highly anisotropic, layered superconductors with commensurate, periodic columnar pins is studied in a geometry where magnetic field and columnar pins are normal to the layers. Thermodynamic properties and equilibrium density distributions are obtained from numerical minimization of an appropriate free-energy functional. We find a line of first-order transiti...

The term Biometrics is becoming highly important in computer security world. The human physical characteristics like fingerprints, face, hand geometry, voice and iris are known as biometrics. These features are used to provide an authentication for computer based security systems. The existing computer security systems used at various places like banking, passport, credit cards, smart cards, PI...

Projection matrices from projective spaces P3 to P2 have long been used in multiple-view geometry to model the perspective projection created by the pin-hole camera. In this work we introduce higher-dimensional mappings Pk →P2, k = 3, 4, 5, 6 for the representation of various applications in which the world we view is no longer rigid. We also describe the multi-view constraints from these new p...

A lthough the key principles of external fixation have changed little over the years, there remains a significant amount of variation in fixation methods and postoperative care. In particular, use and management of halfpins intended for prolonged reconstruction are the subject of strong opinions and intense debate. Half-pins are commonly available in stainless steel and titanium. They are also ...

this report is on a migration of a steinman pin into the posterior com department of the calf. it was used to fix a greater trochanteric osteotomy in a total hip arthroplasty. the puzzling note is how this metal piece passed through the anterolateral compartment of the thigh to the posterior compartment of the calf. accord ing to our literature review, migration of fixation pins through the kne...

In simulation of advanced nuclear reactors, requirements like high precision, efficiency and convenient to multi-physics coupling are putting forward. The deterministic transport method has the advantage efficiency, capable obtaining detailed flux distribution efficient in coupling, but its accuracy is limited by homogenized reaction cross-section data core modelling exactness. traditional two-...

In general, high-order coupler curves of single-degree-offreedom plane linkages cannot be properly traced by standard predictor-corrector algorithms due to drifting problems and the presence of singularities. Instead of focusing on finding better algorithms for tracing curves, a simple method that first traces the configuration space of planar linkages in a distance space and then maps it onto ...

Particle swarm optimization (PSO) is employed to investigate the overall performance of a pin fin.The following study will examine the effect of governing parameters on overall thermal/fluid performance associated with different fin geometries, including, rectangular plate fins as well as square, circular, and elliptical pin fins. The idea of entropy generation minimization, EGM is employed to ...

In this study, the effect of tool pin length on friction stir lap welding 430 and 304 stainless steels has been investigated. The thermal history interface was measured by thermocouple. interfacial macro- micro-structures under different lengths were analyzed via optical microscope scanning electron microscope. Also, tensile shear tests carried out to evaluate strength joint. results show that ...