A hybrid architecture for robust parsing of german

This paper provides an overview of current research on a hybrid and robust parsing architecture for the morphological, syntactic and semantic annotation of German text corpora. The novel contribution of this research lies not in the individual parsing modules, each of which relies on state-of-the-art algorithms and techniques. Rather what is new about the present approach is the combination of these modules into a single architecture. This combination provides a means to significantly optimize the performance of each component, resulting in an increased accuracy of annotation

A Gravity Theory on Noncommutative Spaces

A deformation of the algebra of diffeomorphisms is constructed for canonically deformed spaces with constant deformation parameter theta. The algebraic relations remain the same, whereas the comultiplication rule (Leibniz rule) is different from the undeformed one. Based on this deformed algebra a covariant tensor calculus is constructed and all the concepts like metric, covariant derivatives, curvature and torsion can be defined on the deformed space as well. The construction of these geometric quantities is presented in detail. This leads to an action invariant under the deformed diffeomorphism algebra and can be interpreted as a theta-deformed Einstein-Hilbert action. The metric or the vierbein field will be the dynamical variable as they are in the undeformed theory. The action and all relevant quantities are expanded up to second order in theta.Comment: 28 pages, v2: coefficient in equ. (10.15) corrected, references added, v3: references added, published versio

Improving the Efficiency of FP-LAPW Calculations

The full-potential linearized augmented-plane wave (FP-LAPW) method is well known to enable most accurate calculations of the electronic structure and magnetic properties of crystals and surfaces. The implementation of atomic forces has greatly increased it's applicability, but it is still generally believed that FP-LAPW calculations require substantial higher computational effort compared to the pseudopotential plane wave (PPW) based methods. In the present paper we analyse the FP-LAPW method from a computational point of view. Starting from an existing implementation (WIEN95 code), we identified the time consuming parts and show how some of them can be formulated more efficiently. In this context also the hardware architecture plays a crucial role. The remaining computational effort is mainly determined by the setup and diagonalization of the Hamiltonian matrix. For the latter, two different iterative schemes are compared. The speed-up gained by these optimizations is compared to the runtime of the ``original'' version of the code, and the PPW approach. We expect that the strategies described here, can also be used to speed up other computer codes, where similar tasks must be performed.Comment: 20 pages, 3 figures. Appears in Comp. Phys. Com. Other related publications can be found at http://www.rz-berlin.mpg.de/th/paper.htm

BenchmarX

Bidirectional transformation (BX) is a very active area of research interest. There is not only a growing body of theory, but also a rich set of tools supporting BX. The problem now arises that there is no commonly agreed-upon suite of tests or benchmarks that shows either the conformance of tools to theory, or the performance of tools in particular BX scenarios. This paper sets out to improve the state of affairs in this respect, by proposing a template and a set of required criteria for benchmark descriptions, as well as guidelines for the artifacts that should be provided for each included test. As a proof of concept, the paper additionally provides a detailed description of one concrete benchmark.FCT - Fundação para a Ciência e a Tecnologia (Portuguese Foundation for Science and Technology) within project FATBIT with reference FCOMP-01-0124-FEDER-0205

Light Extraction from Plasmonic Particles with Dielectric Shells and Overcoatings

We rigorously simulate light scattering via the FEM from core-shell plasmonic particles and plasmonic particles with an isolating overcoat, in order to recommend design principles for maximising plasmonic scattering gains

ii Control of chaotic population dynamics

Ecological and economic consideration

Urban Resilience, Climate Change and Adaptation. Coping with Heat Islands in the Dense Urban Area of Athens, Greece

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Urban Resilience, Changing Economy and Social Trends. Coping with socio-economic consequences of the crisis in Athens, Greece

[no abstract

Analysis of clinical and diagnostic findings during exposures in chemical nanotechnology

The rapid development of nanotechnology - the key technology of the 21th century - demands a consideration of risks and assessment of health effects during exposures to nanomaterials. Due to their high surface to volume ratio, nanoscaled materials exhibit exceptional physical and chemical properties when compared to larger particles of the same composition. Therefore toxicological informations of the bulk material should be carefully applied to nano particles. One of the most relevant uptake pathways is the inhalation of nanoscaled particles. Effects on the respiratory tract like inflammation, oxidative stress and pulmonary fibrosis, adverse effects on the cardiovascular and central nervous system are considered. In addition, nanotubes with their structure similar to asbestos-fibres may have a carcinogenic potential. Taking into consideration the various possible working mechanism of nanomaterials, an extensive diagnostic program was designed and offered to a collective of employees in chemical nanotechnology