310 research outputs found
Deriving probabilistic regional envelope curves with two pooling methods
No full textA probabilistic regional envelope curve (PREC) assigns a recurrence interval to a regional envelope curve.
A central point of this method is the determination of homogeneous regions according to the index flood
hypothesis. A flood discharge associated with the recurrence interval (PREC flood quantile) is estimated
for each gauge of a homogeneous region. In this study, the influence of two pooling methods on PREC for
a large group of catchments located in the south-east of Germany is investigated. Firstly, using cluster
analysis, fixed homogeneous regions are derived. Secondly, the Region of Influence (RoI) approach is combined
with PREC. The sensitivity of PREC flood quantiles with respect to pooling groups is evaluated. Different
candidate sets of catchment descriptors are used to derive pooling groups for both pooling
methods. Each pooling group is checked by a homogeneity test. PRECs are then constructed for all homogeneous
regions. The ensemble of PREC realisations reveals the sensitivity of the PREC flood quantiles. A
comparison with the traditional index flood method ascertains the suitability of the pooling methods. A
leave-one-out jackknifing procedure points out a similar performance of cluster analysis and RoI. Furthermore,
a comparison of different degrees of heterogeneity for deriving pooling groups reveals that the performance
of PREC for ungauged catchments decreases in more heterogeneous pooling groups
Effects of intersite dependence of nested catchment structures on probabilistic regional envelope curves
No full textThis study analyses the intersite dependence of nested catchment structures by modelling cross-correlations for pairs of nested and unnested catchments separately. Probabilistic regional envelope curves are utilised to derive regional flood quantiles for 89 catchments located in Saxony, in the Southeast of Germany. The study area has a nested structure and the intersite correlation is much stronger for nested pairs of catchments than for unnested ones. Pooling groups of sites (regions) are constructed based on several candidate sets of catchment descriptors using the Region of Influence method. Probabilistic regional envelope curves are derived on the basis of flood flows observed within the pooling groups. Their estimated recurrence intervals are based on the number of effective sample years of data (i.e. equivalent number of uncorrelated data). The evaluation of the effective sample years of data requires the modelling of intersite dependence. We perform this globally, using a cross-correlation function for the whole study area as well as by using two different cross-correlation functions, one for nested pairs and another for unnested pairs. In the majority of the cases, these two modelling approaches yield significantly different estimates for the effective sample years of data, and therefore also for the recurrence intervals. The reduction of the recurrence interval when using two different cross-correlation functions is larger for larger pooling groups and for pooling groups with a higher fraction of nested catchments. A separation into nested and unnested pairs of catchments gives a more realistic representation of the characteristic river network structure and improves the estimation of regional information content. Hence, applying two different cross-correlation functions is recommended
Os modos de projeção do cantor‐ator: a importância deste princípio para o desenvolvimento cênico dos cantores líricos
No full textThe present article is an excerpt from the doctoral thesis defended by the author (GUSE, 2018), in which a compendium of exercises is proposed aimed at the scenic development of the classical Singer, based on the principles of the methodology of the North‐American director Wesley Balk (1981, 1989 e 1991) as the main theoretical foundation. The purpose of this excerpt is to present the principle of the projective modes of this methodology, through the review of the literature of this author. Balk divides the singer’s expressive system in three projective modes – hearing/vocal, kinesthetic and facial/emocional – with the intention of synthesizing the integration of abilities between singing and acting in a three‐part system that works synergistically. In this way, the parts of this system would work in such a way as serve its assertive needs of communication in the performance, as its integrative needs avoiding superfluous tensions coming from the “entanglements”.O presente artigo é um recorte da tese de doutorado defendida pela autora (GUSE, 2018), em que é proposto um compêndio de exercícios direcionados ao desenvolvimento cênico do cantor lírico, partindo dos princípios da metodologia do diretor norte‐americano Wesley Balk (1981, 1989 e 1991) como fundamentação teórica principal. Este recorte tem como objetivo apresentar o princípio dos modos de projeção desta metodologia, através da revisão da literatura deste autor. Balk divide o sistema expressivo do cantor em três modos de projeção – vocal/auditivo, cinestésico e facial/emocional – na intenção de sintetizar a integração das habilidades entre cantar e atuar em um sistema de três partes que trabalha sinergicamente. Dessa forma, as partes desse sistema trabalhariam de maneira tanto a atender suas necessidades assertivas de comunicação na performance, como as suas necessidades integrativas evitando tensões supérfluas vindas dos “enredamentos”
An Investigation of Competitive and Non-competitive Framing Effects: Interpreting the Relationship Between Elite Rhetoric and Support for Preventive War
No full textABSTRACT AN INVESTIGATION OF COMPETITIVE AND NON-COMPETITIVE FRAMING EFFECTS: INTERPRETING THE RELATIONSHIP BETWEEN ELITE RHETORIC AND SUPPORT FOR PREVENTIVE WAR by Jeffrey Guse The University of Wisconsin-Milwaukee, Under the Supervision of Professor Steven B. Redd This dissertation examines how competitive and non-competitive framing environments influence public opinion towards the use of preventive force. I attempt to develop a theory that helps to explain which factors are responsible for influencing public opinion for those who possess strong predispositions towards or against the use of force in contrast to those who possess weak predispositions towards or against the use of force. I test predictions based on my theory in two empirical chapters: a media content analysis and a laboratory experiment. The media content analysis allows me to test whether there is a significant difference between those who are exposed to non-competitive and competitive framing environments from those who are not exposed to them. The experimental chapter will allow me to test how framing effects work, in particular whether or not those who possess strong predispositions are likely to be influenced by frames that correspond to preconceived values and whether those who possess weak predispositions are likely to be influence by frames based on the credibility of the source. In addition, this chapter will examine how these factors hold in both competitive and non-competitive framing environments
Comparative analysis of scalar upper tail indicators
No full textDifferent upper tail indicators exist to characterize heavy tail phenomena, but no comparative study has been carried out so far. We evaluate the shape parameter (GEV), obesity index, Gini index and upper tail ratio (UTR) against a novel benchmark of tail heaviness–the surprise factor. Sensitivity analyses to sample size and changes in scale-to-location ratio are carried out in bootstrap experiments. The UTR replicates the surprise factor best but is most uncertain and only comparable between records of similar length. For samples with symmetric Lorenz curves, shape parameter, obesity and Gini indices provide consistent indications. For asymmetric Lorenz curves, however, the first two tend to overestimate, whereas Gini index tends to underestimate tail heaviness. We suggest the use of a combination of shape parameter, obesity and Gini index to characterize tail heaviness. These indicators should be supported with calculation of the Lorenz asymmetry coefficients and interpreted with caution
The singer-actor's projective modes: an important principle for the scenic development of classical singers
No full textThe present article is an excerpt from the doctoral thesis defended by the author (GUSE, 2018), in which a compendium of exercises is proposed aimed at the scenic development of the classical Singer, based on the principles of the methodology of the North-American director Wesley Balk (1981, 1989 e 1991) as the main theoretical foundation. The purpose of this excerpt is to present the principle of the projective modes of this methodology, through the review of the literature of this author. Balk divides the singer's expressive system in three projective modes - hearing/vocal, kinesthetic and facial/emocional - with the intention of synthesizing the integration of abilities between singing and acting in a three-part system that works synergistically. In this way, the parts of this system would work in such a way as serve its assertive needs of communication in the performance, as its integrative needs avoiding superfluous tensions coming from the entanglements.Univ Estadual Paulista, UNESP, Sao Paulo, BrazilUniv Estadual Paulista, UNESP, Sao Paulo, Brazi
An Investigation of Competitive and Non-competitive Framing Effects: Interpreting the Relationship Between Elite Rhetoric and Support for Preventive War
No full textABSTRACT
AN INVESTIGATION OF COMPETITIVE AND NON-COMPETITIVE FRAMING EFFECTS: INTERPRETING THE RELATIONSHIP BETWEEN ELITE RHETORIC AND SUPPORT FOR PREVENTIVE WAR
by
Jeffrey Guse
The University of Wisconsin-Milwaukee,
Under the Supervision of Professor Steven B. Redd
This dissertation examines how competitive and non-competitive framing environments influence public opinion towards the use of preventive force. I attempt to develop a theory that helps to explain which factors are responsible for influencing public opinion for those who possess strong predispositions towards or against the use of force in contrast to those who possess weak predispositions towards or against the use of force. I test predictions based on my theory in two empirical chapters: a media content analysis and a laboratory experiment. The media content analysis allows me to test whether there is a significant difference between those who are exposed to non-competitive and competitive framing environments from those who are not exposed to them. The experimental chapter will allow me to test how framing effects work, in particular whether or not those who possess strong predispositions are likely to be influenced by frames that correspond to preconceived values and whether those who possess weak predispositions are likely to be influence by frames based on the credibility of the source. In addition, this chapter will examine how these factors hold in both competitive and non-competitive framing environments
The role of NAADP for Ca2+-signaling in T cells of the rat and ventricular cardiomyocytes of the mouse
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