177 research outputs found

    First measurement of the BSB_S meson mass

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    If simplified, every information retrieval problem can be solved when the information need implied by its expression has been identified. We are interested in the criteria used in realising a good information retrieval problem expression. We have listed these criteria through some principles and maxims which first characterized the communication between two persons are applied. We choose to use the gricean maxims because they are the most favoured for this type of situation. Secondly, we have tried to identify some others principles that can be used to realise a good information retrieval problem expression. The principles by Grice can not resolve all forms of error associated with this particular form of communication. In our work, we defined three other principles namely: adhesion principle, reformulation principle, memorization principle. We give some examples of situations where the principles we have formulated are not applicable and the consequences. We present the possible applications of our new model: MIRABEL, which can help in the description of information retrieval problem from. It also compels its user to use essential good expression principle implicitly

    Search for particles with unexpected mass and charge in Z decays

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    Update of electroweak parameters from Z decays

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    The EUMAC zooming model, a tool supporting environmental policy decisions in the local-to-regional scale

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    Air pollution model systems may be used for the optimization of air pollution abatement strategies and for short-term predictions of smog episodes in highly polluted areas. One of the contemporary air pollution model systems is the EUMAC Zooming Model (EZM) which is best suited for air quality studies at the local-to-regional scale. As examples for such studies, results are presented from the application of the EZM to the Basel area, to the Attica peninsula, to the Upper Rhine valley and to the Heilbronn area during the 'Ozone Experiment'. (orig.)SIGLEAvailable from TIB Hannover: DtF QN1(47,13) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman
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