We present a method for compiling grammars into efficient code for head-driven generation in ALE. Like other compilation techniques already used in ALE, this method integrates ALE's compiled code for logical operations with control-specific information from (SNMP90)'s algorithm along with user-defined directives to identify semantics-related substructures. This combination provides far better p...

We give a classification of toric anti-self-dual conformal structures on compact 4-orbifolds with positive Euler characteristic. Our proof is twistor theoretic: the interaction between the complex torus orbits in the twistor space and the twistor lines induces meromorphic data, which we use to recover the conformal structure. A compact anti-self-dual orbifold can also be constructed by adding a...

A gauge theory can be formulated on a noncommutative (NC) spacetime. This NC gauge theory has anequivalent dual description through the so-called Seiberg-Witten (SW) map in terms of an ordinary gauge theory on a commutative spacetime. We show that all NC U(1) instantons of Nekrasov-Schwarz type are mapped to asymptotically locally Euclidean (ALE) gravitational instantons by the exact SW map and...

Lagrangian codes with mesh moving with the fluid suffer in many cases by mesh distortion leading to tangled mesh which in principle stops the computation as basic assumptions of the numerical method as e.g. positive volume of cells are not valid any more. Arbitrary LagrangianEulerian (ALE) method overcomes this difficulty by untangling or smoothing the mesh and conservative remapping of conserv...

We derive optimal a priori error estimates for discontinuous Galerkin (dG) time discrete schemes of any order applied to an advection-diffusion model defined on moving domains and written in the Arbitrary Lagrangian Eulerian (ALE) framework. Our estimates hold without any restrictions on the time steps for dG with exact integration or Reynolds’ quadrature. They involve a mild restriction on the...

In this study, Flowfield Dependent Variation (FDV) method is coupled with Arbitrary Lagrangian-Eulerian (ALE) method in order to solve fluid-structure interaction problems. FDV method is a mixed explicit-implicit numerical scheme where its implicitness is determined by several parameters that are dependent on the physical properties of the local flow. The scheme which is called as ALE-FDV metho...

Obiectivul acestei lucrări este de a analiza prin Metoda Elementului Finit (FEM) şi de a optimiza dimensional radiatoarele frontale ale sistemului de răcire pentru transformatorul electric de putere TTU 630 kVA 20/0.4 kV din punct de vedere al transferului termic maxim. Analiza cu Elemente Finite a fost realizată cu ajutorul programelor software SolidWorks 3D CAD Design şi COSMOSFlow Works 2008...

This contribution is the second part of two papers on the Fully Eulerian formulation for fluid-structure interactions (fsi). We present different fsi applications using the Fully Eulerian scheme, where traditional interface-tracking approaches like the Arbitrary LagrangianEulerian (ALE) framework show difficulties. Furthermore, we present examples where parts of the geometry undergo a large mot...

In this paper we study a variation of the signature Ale access method for text and attribute retrieval. According to this method, the documents (or records) are stored sequentially in the “text flle”. Abstractions (“signatures”) of the documents (or records) are stored in the “signature Ale”. The latter serves as a Alter on retrieval: It helps discarding a large number of non-qualifying documen...