189,199 research outputs found

    The ecological dynamics of decision-making in sailing

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    Competitive sailing is characterised by continuous interdependencies of decisions and actions. All actions imply a permanent monitoring of the environmental conditions, such as intensity and direction of the wind, sea characteristics, and the behaviour of the opponent sailors. These constraints on sailors’ behavior are in constant change implying continuous adjustments in sailors’ actions and decisions. Among the different parts of a regatta, tactics and strategy at the start are particularly relevant. Among coaches there is an adage that says that “the start is 50% of a regatta” (Houghton, 1984; Saltonstall, 1983/1986). Olympic sailing regattas are performed with boats of the same class, by one, two or three sailors, depending on the boat class. Normally before the start, sailors visit the racing venue and analyse wind and sea characteristics, in order to fine- tune their boats accordingly. Then, five minutes before the start, sailors initiate starting procedures in order to be in a favourable position at the starting line (at the “second zero”). This position is selected during the start period according to wind shifts tendencies and the actions of other boats (Figure 11.1). Only after the start signal can the boats cross the imaginary starting line between the race committee signal boat “A” and the pin end boat. The start takes place against the wind (upwind), and the boats start racing in the direction of mark 1. Based on the evaluation of the sea and wind characteristics (e.g. if the wind is stronger at a particular place on the course), sailors re- adjust their strategy for the regatta. This strategy may change during the regatta, according to wind changes and adversary actions. More to the point, strategic decisions constrain and are constrained by on- line decisions during the regatta

    Die Familie Davids

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    Die Familie Davids (The family of David

    St Davids Bishop's Palace

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    Garrigou Grandchamp Pierre. St Davids Bishop's Palace. In: Bulletin Monumental, tome 159, n°2, année 2001. p. 181

    Binge drinking: catch it early

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    A survey of South Africans' habits highlights the need for early interventions to address the growing scourge of alcohol abuse, KARL PELTZER, ALICIA DAVIDS and PETER NJUHO maintain.

    Eenvoudig en stoutmoedig: De kunst van het symbolisch denken volgens Efrem de Syriër

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    Contains fulltext : 39482.pdf (Publisher’s version ) (Open Access)RU Radboud Universiteit Nijmegen, 15 juni 2006Promotores : Teule, H.G.B., Davids, A.J.M.393 p

    Unde Malum. Dualisme bij Manicheeërs en Katharen. Een vergelijkend onderzoek

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    Contains fulltext : 59887.pdf (Publisher’s version ) (Open Access)KU-Nijmegen, 26 april 2004Promotores : Oort, J. van, Davids, A.J.M.203 p

    Ephrem the Syrian transmitted and transmuted in Greek and Slavonic. Aspects of the reception of sermo asceticus in the Slavonic World

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    Contains fulltext : 84994.pdf (Publisher’s version ) (Open Access)RU Radboud Universiteit Nijmegen, 23 februari 2010Promotores : Teule, H.G.B., Thomson, F.J., Davids, A.J.M.296 p

    C. L. Davids, Samling Fjerde del Jubilaeumsskrift 1945-70

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    Le Bonheur Albert. C. L. Davids, Samling Fjerde del Jubilaeumsskrift 1945-70. In: Arts asiatiques, tome 28, 1973. p. 227
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