865 resultados para scaling relations


Relevância:

20.00% 20.00%

Publicador:

Resumo:

C'est souvent dans les institutions psychiatriques que le médecin développe les premiers contacts avec la psychanalyse. L'institution entretient pourtant avec la psychanalyse un rapport chimérique que les sociétés de psychanalyse contribuent à pervertir en restant cloîtrées. Telle pourrait être la thèse de Nicolas Despland qui souhaite, par un article qui défriche le problème, ouvrir la discussion pour trouver des solutions qui importent à tous les protagonistes. (Tribune psychanalytique)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Stable isotope compositions of a suite of magmatic amphiboles from alkaline basalts and andesitic rocks were examined to constrain the effects of degassing processes on the hydrogen isotope compositions. The Fe3+ (as Fe3+/Fe-total) and H2O contents, as well as the H isotope compositions of the amphiboles, differ markedly (27-58%, 0.5-2.2 wt%, -107 to -15 parts per thousand, respectively) but indicate systematic variations. The observed trends can be explained either as dehydrogenation or dehydration processes, both of which are coupled to oxidation processes, the latter most probably related to O2- substitution within amphiboles. The dehydrogenation-dehydration models can be used to assess the primary compositions of the magmas. As an important example, delta D values of amphiboles of Martian meteorites are discussed in a similar context. Copyright (c) 2006 John Wiley & Sons, Ltd.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Agency Performance Plan, Public Employment Relations Board

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Defining the limits of an urban agglomeration is essential both for fundamental and applied studies in quantitative and theoretical geography. A simple and consistent way for defining such urban clusters is important for performing different statistical analysis and comparisons. Traditionally, agglomerations are defined using a rather qualitative approach based on various statistical measures. This definition varies generally from one country to another, and the data taken into account are different. In this paper, we explore the use of the City Clustering Algorithm (CCA) for the agglomeration definition in Switzerland. This algorithm provides a systemic and easy way to define an urban area based only on population data. The CCA allows the specification of the spatial resolution for defining the urban clusters. The results from different resolutions are compared and analysed, and the effect of filtering the data investigated. Different scales and parameters allow highlighting different phenomena. The study of Zipf's law using the visual rank-size rule shows that it is valid only for some specific urban clusters, inside a narrow range of the spatial resolution of the CCA. The scale where emergence of one main cluster occurs can also be found in the analysis using Zipf's law. The study of the urban clusters at different scales using the lacunarity measure - a complementary measure to the fractal dimension - allows to highlight the change of scale at a given range.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Comprend : Dépêche de Lord Whitworth, ambassadeur d'Angleterre en France, au cabinet britannique (Lord Hawkesbury) ; Déclaration adressée au ministre des Etats-Unis, ainsi qu'aux autres ministres et agens de puissances neutres, près le Gouvernement britannique ; Décret de Berlin, en notre camp impérial de Berlin ; Ordre du Conseil britannique ; Ordre du Conseil britannique ; Décret de Milan, en notre palais royal de Milan ; Ordre du Conseil britannique ; Ordre du Conseil britannique ; Rapport adressé à l'Empereur Napoléon par son ministre des relations extérieures / et communiqué au Sénat françois, dans la séance du 10 mars 1812 ; Déclaration du Gouvernement britannique ; Extrait du Traité de navigation et de commerce ; Extrait du Traité maritime conclu entre la Russie et l'Angleterre ; Déclaration de S. M. l'Impératrice de toutes les Russies aux Cours de Londres, de Versailles, et de Madrid ; Extrait de la déclaration de S. M. l'Empereur de toutes les Russies, publiée à St. Petersbourg

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Objective: Previous studies reported on the association of left ventricular mass index (LVMI) with urinary sodium or with circulating or urinary aldosterone.We investigated the independent associations of LVMI with the urinary excretion of both sodium and aldosterone. Design and method: We randomly recruited 317 untreated subjects from a White population (45.1%women; mean age 48.2 years).Measurements included echocardiographic left ventricular (LV) properties, the 24 h urinary excretion of sodium and aldosterone, plasma renin activity (PRA), and proximal (RNaprox) and distal (RNadist) renal sodium reabsorption, assessed fromthe endogenous lithium clearance. Inmultivariable-adjusted models,we expressed changes in LVMI per 1 SD increase in the explanatory variables, while accounting for sex, age, systolic blood pressure and the waist-to-hip ratio. Results: LVMI increased independentlywith the urinary excretion of both sodium (+2.48 g/m2; P=0.005) and aldosterone (+2.63 g/m2; P=0.004). Higher sodium excretion was associated with increased mean wall thickness (MWT: +0.126 mm, P=0.054), but with no change in LV end-diastolic diameter (LVID: +0.12mm, P=0.64). In contrast, higher aldosterone excretion was associated with higher LVID (+0.54 mm; P=0.017), but with no change in MWT (+0.070mm; P=0.28).Higher RNadistwas associatedwith lower relativewall thickness (−0.81×10−2, P=0.017), because of opposite trends in LVID(+0.33 mm; P=0.13) and MWT (−0.130mm; P=0.040). LVMI was not associated with PRA or RNaprox. Conclusions: LVMI independently increased with both urinary sodium and aldosterone excretion. IncreasedMWT explained the association of LVMI with urinary sodium and increased LVID the association of LVMI with urinary aldosterone.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Stage-discharge relations constitute a viable, alternative technique for estimating accurately flow for ungaged sites. In this research, we have utilized pressure transducers and Large Scale Particle Image Velocimetry techniques to develop stage-discharge relations at eleven sites in the Hungry Canyon Area (HCA) of southwestern Iowa under different hydrologic conditions. We have employed these data to calibrate and verify an established hydrologic model and then we have used this model to provide a stage discharge relation for different hydrologic conditions (i.e. rating curves). The benefits of the project are numerous including that the discharge data will be used for a number of purposes, including operational decision making in the HCA about the design of water-control and conveyance structures, input for hydraulic and hydrologic models, and calculation of sediment and other water quality constituents transport and “loads”, and for decision making. This project has also pointed out the difficulties in measuring flows in ungaged streams with ice jams, steep banks, erodible beds, and floating debris.