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During the 2009 H1N1 influenza pandemic, elderly or obese patients and those with neurological disease had an increased risk for severe H1N1 infection in Austria. Pregnancy was not associated with a higher risk for severe disease in the later phase of the 2009 H1N1 pandemic. Antiviral treatment provided a minimal effect on the symptoms of influenza but reduced the risk of admission to an ICU.

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model with particular emphasis on the incorporation of ladle glaze, which has been identi ed as a potential source A potential source of inclusions in liquid steel is of inclusions of variable, often undesirable, composition. A ladle glaze, the slag/inclusion coating on the description of pilot plant experiments that were carried out refractory lining of the ladle which is always present to determine the eVect of tapping operations on ladle glaze after casting and before reuse of the ladle. The is given, together with some results of the mathematical composition and quantity of this glaze can vary model incorporating ladle glaze. The implications for the considerably, depending on the range of steel production of clean steel are assessed. qualities being made and, in order to model the effect of glaze on inclusion/top slag formation, a combined fluid flow-thermodynamic model has DESCRIPTION OF MODEL been developed. The behaviour of ladle glaze for Details of the model are described elsewhere. 7 The ladle is various different steels has been studied under pilot divided into 400 'cells' in which the concentrations of all the plant conditions and the results incorporated into dissolved species, elements, and oxides, are known, as well the mathematical model. The implications of the as the temperature and pressure. Important assumptions pilot plant and model results are discussed in the regarding the processes now being modelled include: context of the production of clean steel. I&S/15811. The ferroalloy additions are added to the lling ladle in the same sequence and rate as those used during a plant At the time the work was carried out Dr Hassall, Mr Bain, and trial. They occupy de ned positions depending on density, Dr Warman were with Corus Research, Development and Techwith the elements being released into the liquid steel as a

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(accessed July 10, 2009).The capabilities of a high average power picosecond laser are assessed for micromachining yttria‐stabilized tetragonal zirconia polycrystal (Y‐TZP) in its hard state. Laser machining of this material presents an attractive alternative to conventional machining techniques when precision customized parts are required due to the difficulty in machining Y‐TZP in its hard state. Compared with previous nanosecond work the picosecond laser enables similar micromachining to be carried out at the same rate but with a superior surface finish and with no evidence of surface cracking. Strength measurements have been carried out using a four‐point bend test rig and confirm that the improvement in surface quality translates to higher strength in machined components.

Recommender systems have emerged as an effective decision tool to help users more easily and quickly find products that they prefer, especially in e-commerce environments. However, few studies have tried to understand how this technology has influenced the way users search for products and make purchase decisions. Our current research aims at examining the impact of recommenders by understanding how recommendation tools integrate the classical economic schemes and how they modify product search patterns. We report our work in employing an eye tracking system and collecting users' interaction behaviors as they browsed and selected products to buy from an online product retail website offering over 3,500 items. This in-depth user study has enabled us to collect over 48,000 fixation data points and 7,720 areas of interest from eighteen users, each spending more than one hour on our site. Our study shows that while users still use traditional product search tools to examine alternatives, recommenders definitely provide users with new opportunities in their decision process. More specifically, users actively click and gaze at products recommended to them, up to 40% of the time. In addition, recommendation areas are highly attractive, drawing users to add 50% more items to their baskets as a traditional tool does. Observing that users consult the recommendation area more as they are close to the end of their search process, it seems that recommenders enhance users' decision confidence by satisfying their need for diversity. Based on these results, we derive several interaction design guidelines that can significantly improve users' satisfaction and perception of product recommenders.