292 research outputs found

    Der Weg zum grünen Mainstream

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    Seit 25 Jahren arbeitet ein Netzwerk von Schweizer Unternehmen an einer Transformation des Wirtschaftssystems. Für das breite Engagement werden politische, wirtschaftliche und gesellschaftliche Instrumente eingesetzt. Doch die Rahmenbedingungen für eine nachhaltige Wirtschaft sind nach wie vor nicht optimal

    Histoire de la documentation historique

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    Vincent Duclert, professeur agrégé avec Anita Guerreau-Jalabert, directrice de recherche au CNRS, directrice de l’École nationale des Chartes, et Françoise Hildesheimer, conservateur en chef aux Archives nationales, professeur associé à l’Université de Paris-I L’analyse de pratiques et des discours sur les sources ne cesse d’être partie prenante des démarches scientifiques en histoire et en sciences sociales. Elle éclaire particulièrement les choix thématiques, les modes d’élaboration et les ..

    Influence of blood viscosity on cochlear action potentials and oxygenation

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    Impairment of the cochlear blood supply of guinea pigs was induced in order to study the effects of hypoxia on the cochlear action potentials. The oxygenation of the cochlear structures was decreased by perfusing the ears with polycythemic hyperviscous blood. The validity of using this model of cochlear blood flow was based on the propensity of the blood to flow in a laminar way. Because of the streamlined flow pattern, the blood supplied by the two vertebral arteries does not mix within the common trunk of the basilar artery. The retrograde injection of polycythemic hyperviscous blood into one vertebral artery will affect the ear on the injected side only. The high viscosity of the polycythemic blood decreases the rate of flow of blood through the cochlear vessels; the high oxygen content of this blood, however, avoids hypoxia of the cochlea. Therefore, in order to make the slowdown in the blood flow evident, its oxygen content was reduced to a `precritical level' before it was infused. Injecting normoviscous blood with a `precritical level' of oxygen caused a mild reduction in the scala media pO2 of 15.2% for the whole group of twenty animals. The hyperviscous blood with the same level of oxygenation, however, reduced the pO2 in the scala media to 53.3% of normal. These findings explain the difference in the altered click-evoked action potentials in the two groups of animals.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/23846/1/0000085.pd

    Weak Sequential Composition in Process Algebras

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    n this paper we study a special operator for sequential composition, which is defined relative to a dependency relation over the actions of a given system. The idea is that actions which are not dependent (intuitively because they share no common resources) do not have to wait for one another to proceed, even if they are composed sequentially. Such a notion has been studied before in a linear-time setting, but until recently there has been no systematic investigation in the context of process algebras. We give a structural operational semantics for a process algebraic language containing such a sequential composition operator, which shows some interesting interplay with choice. We give a complete axiomatisation of strong bisimilarity and we show consistency of the operational semantics with an event-based denotational semantics developed recently by the second author. The axiom system allows to derive the communication closed layers law, which in the linear time setting has been shown to be a very useful instrument in correctness preserving transformations. We conclude with a couple of examples

    Population et personnalités juives du Sud-Est (Bouches du Rhône et Alpes-Maritimes). À l'époque du grand Sanhédrin

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    Hildesheimer Françoise. Population et personnalités juives du Sud-Est (Bouches du Rhône et Alpes-Maritimes). À l'époque du grand Sanhédrin. In: Annales historiques de la Révolution française, n°235, 1979. Le Grand Sanhédrin de 1807. pp. 67-85

    Guillaume Benoist. Inventaire des titres et documens de l'Hostel de Ville de la Cité royale de Montauban, réimpression de l'édition de 1662 ; avec avant-propos et index par Annie Lafforgue. Montauban : Les Amis des Archives de Tarn-et-Garonne, 1983. In-8°, VIII-108-XXVIII pages.

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    Hildesheimer Françoise. Guillaume Benoist. Inventaire des titres et documens de l'Hostel de Ville de la Cité royale de Montauban, réimpression de l'édition de 1662 ; avec avant-propos et index par Annie Lafforgue. Montauban : Les Amis des Archives de Tarn-et-Garonne, 1983. In-8°, VIII-108-XXVIII pages.. In: Bibliothèque de l'école des chartes. 1983, tome 141, livraison 2. pp. 374-375

    Chabord (Marie-Thérèse) et Cougnenc (Marguerite), Les archives des administrations centrales. Conseils pratiques, 1979

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    HILDESHEIMER Françoise. Chabord (Marie-Thérèse) et Cougnenc (Marguerite), Les archives des administrations centrales. Conseils pratiques, 1979. In: La Gazette des archives, n°116, 1982. p. 54
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