DCU 250 Arabic dependency bank: an LFG gold standard resource for the Arabic Penn treebank

This paper describes the construction of a dependency bank gold standard for Arabic, DCU 250 Arabic Dependency Bank (DCU 250), based on the Arabic Penn Treebank Corpus (ATB) (Bies and Maamouri, 2003; Maamouri and Bies, 2004) within the theoretical framework of Lexical Functional Grammar (LFG). For parsing and automatically extracting grammatical and lexical resources from treebanks, it is necessary to evaluate against established gold standard resources. Gold standards for various languages have been developed, but to our knowledge, such a resource has not yet been constructed for Arabic. The construction of the DCU 250 marks the first step towards the creation of an automatic LFG f-structure annotation algorithm for the ATB, and for the extraction of Arabic grammatical and lexical resources

Absence of nontrivial solutions for a class of partial differential equations and systems in unbounded domains

In this paper, we are interested in the study of the nonexistence of nontrivial solutions for a class of partial differential equations, in unbounded domains. This leads us to extend these results to systems of m equations. The method used is based on energy type identities

Simulation of machining errors of Bspline and Cspline.

The high-speed milling operation is widely used in industry for the production of aircraft parts, molds, and dies. The machining based on the polynomial programming (especially Bezier or basic spline (Bspline) and cubic spline (Cspline)) brings an interesting gain in cycle time. However, part quality can be degraded by using this type of programming. In this paper, we suggest a simulation methodology for errors caused by the interpolations: Bspline and Cspline in high-speed machining of warped shapes. To do this, we have developed analytical models expressing the basic paths of these interpolations. Then, we have designed a simulation tool based on these models. Experimental verifications have been done to validate our approac