Search results for "multidimensional"

Reproductive strategy as a piece of the biogeographic puzzle: a case study using Antarctic sea stars (Echinodermata, Asteroidea)

2017

13 pages; International audience; AimTo describe and analyse asteroid biogeographic patterns in the Southern Ocean (SO) and test whether reproductive strategy (brooder versus broadcaster) can explain distribution patterns at the scale of the entire class. We hypothesize that brooding and broadcasting species display different biogeographic patterns.LocationSouthern Ocean, south of 45 °S.MethodsOver 14,000 asteroid occurrences are analysed using bootstrapped spanning network (BSN), non-metrical multidimensional scaling (nMDS) and clustering to uncover the spatial structure of faunal similarities among 25 bioregions.ResultsMain biogeographic patterns are congruent with previous works based on…

Muon Anomaly from Lepton Vacuum Polarization and The Mellin--Barnes Representation

2008

We evaluate, analytically, a specific class of eighth--order and tenth--order QED contributions to the anomalous magnetic moment of the muon. They are generated by Feynman diagrams involving lowest order vacuum polarization insertions of leptons $l=e,\mu$, and $\tau$. The results are given in the form of analytic expansions in terms of the mass ratios $m_e/m_\mu$ and $m_\mu/m_\tau$. We compute as many terms as required by the error induced by the present experimental uncertainty on the lepton masses. We show how the Mellin--Barnes integral representation of Feynman parametric integrals allows for an easy analytic evaluation of as many terms as wanted in these expansions and how its underlyi…

Using the Multidimensional Prognostic Index to Predict Clinical Outcomes of Hospitalized Older Persons: A Prospective, Multicenter, International Stu…

2018

Abstract Background Multidimensional Prognostic Index (MPI) is useful as a prognostic tool in hospitalized older patients, but our knowledge is derived from retrospective studies. We therefore aimed to evaluate in a multicenter, longitudinal, cohort study whether the MPI at hospital admission is useful to identify groups with different mortality risk and whether MPI at discharge may predict institutionalization, rehospitalization, and use of home care services during 12 months. Methods This longitudinal study, carried out between February 2015 and August 2017, included nine public hospitals in Europe and Australia. A standardized comprehensive geriatric assessment including information on f…

The role of olfaction in the elaboration and use of the Chardonnay wine concept

2005

The existence of a Chardonnay wine concept was explored in two experiments. In the first experiment, 28 Chardonnay wine experts assessed in terms of a score the degree of representativeness of 48 white wines according to their own Chardonnay wine concept. The samples were 29 wines made from Chardonnay grapes and 19 wines made from other grape varieties (Aligote, Melon de Bourgogne, Sylvaner, Sauvignon blanc, Chenin, Marsanne and Pinot blanc). Two assessment conditions were conducted: orthonasal and global (orthonasal plus retronasal and mouthfeel perceptions). Globally, scores were higher for Chardonnay wines than for non-Chardonnay ones and the consensus among experts demonstrated the exis…

Dynamics of supercooled liquids and glassy solids

2001

Characterisation of the volatile fraction of aromatic caramel using heart-cutting multidimensional gas chromatography

2014

The first aim of our study was to improve characterisation of the volatile fraction of aromatic caramel by applying heart-cutting multidimensional gas chromatography coupled to mass spectrometry and olfactometry (MDGC-MS-O) on targeted odorant fractions. The second aim was to compare the volatile composition of two caramel samples, which differed in terms of their carbohydrate composition and cooking process. MDGC analyses enabled identification of 37 compounds (17 with the addition of pure standard) in the burnt sugar caramel, 20 of which were reported for the first time in caramel. Fifteen compounds were identified as odour-active and described using a range of attributes such as floral, …

Diseño e implementación de una aplicación en Processing para la representación visual de datos multidimensionales utilizando técnicas de Minería de D…

2015

La posibilidad de disponer de representaciones gráficas de los datos es de gran valor a la hora de extraer conocimiento útil. Sus principales ventajas son la visualización de información de una forma sencilla, rápida y directa. No obstante, muchos de los conjuntos de datos contienen numerosos registros, que pueden ser de naturaleza multivariante. En estos casos, la representación visual de datos se convierte en una tarea complicada y las técnicas clásicas que suelen utilizarse obtienen resultados poco intuitivos. Esta tesis se plantea como objetivo el diseño e implementación de una aplicación versátil capaz de representar visualmente gran cantidad de datos multidimensionales de forma eficaz…

Comunicazione multidimensionale nella società glocale,

2004

In questo contributo ho innanzitutto esposto la teoria multidimensionale della comunicazione nelle sue linee essenziali; ho poi indicato i principi metodologici basilari che derivano da essa e che consentono di definire una tecnica di analisi applicabile a questo tipo di interfacce della comunicazione telematica tra agenti sociali. Ho pure cercato di dare risposta a tre questioni metodologiche – quale oggettività dei risultati, quale loro comparabilità e quale flessibilità della teoria multidimensionale stessa –, che sono emerse nello studio empirico dei siti internet di istituzioni pubbliche e di imprese (due degli ipertesto raccolti nel cd-rom allegato al volume, cioè "Regioni on line" e …

Distinct neural-behavioral correspondence within face processing and attention networks for the composite face effect

2022

The composite face effect (CFE) is recognized as a hallmark for holistic face processing, but our knowledge remains sparse about its cognitive and neural loci. Using functional magnetic resonance imaging with independent localizer and complete composite face task, we here investigated its neural-behavioral correspondence within face processing and attention networks. Complementing classical comparisons, we adopted a dimensional reduction approach to explore the core cognitive constructs of the behavioral CFE measurement. Our univariate analyses found an alignment effect in regions associated with both the extended face processing network and attention networks. Further representational simi…

Consumer Engagement in Online Settings: Conceptualization and Validation of Measurement Scales

2015

This paper addresses the conceptualization, scale development and scale validation related to the study of consumer engagement in online settings. It first reviews this concept and draws attention to the multidimensionality of the construct, considering the underlying cognitive, emotional, and behavioral dimensions of consumer engagement. Then, it presents the foundation of this concept in relationship marketing and adds support to this proposition. Further, it proposes the construction and psychometric assessment of a 37 scales that examine all three dimensions, based on an international sample of 110 respondents who engage with a brand on a social media network. Based on multiple and succ…