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Size and duration of COVID-19 clusters go along with a high SARS-CoV-2 viral load: A spatio-temporal investigation in Vaud state, Switzerland

Publications associées (39)

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Learning Cluster Type and Dissimilarity Metric for Each Cluster Using a Set of Possible Cluster Types

Arash Arami

One of the shortcomings of the existing clustering methods is their problems dealing with different shape and size clusters. On the other hand, most of these methods are designed for especial cluster types or have good performance dealing with particular s ...

2007

Analysis of a Synonymy Network

Paolo De Los Rios, Jean-Cédric Chappelier, David Gfeller

The purpose of this report is to present the study of a linguistic network based on the relation of synonymy. The network has been extracted from a dictionary of synonyms in French. Due to errors and ambiguities in the data, the synonyms are not always gro ...

2004

Implantation and electron emission in cluster-surface collisions

Microscopic processes induced by the controlled deposition of mass selected silver clusters on graphite (HOPG) and Pt(111) are investigated. The implantation of silver clusters into the HOPG surface is analyzed. The first step consists in a systematic stud ...

EPFL2004

Unknown-Multiple Speaker clustering using HMM

Hervé Bourlard, Jitendra Ajmera

An HMM-based speaker clustering framework is presented, where the number of speakers and segmentation boundaries are unknown \emph{a priori}. Ideally, the system aims to create one pure cluster for each speaker. The HMM is ergodic in nature with a minimum ...

2002

Unknown-Multiple Speaker clustering using HMM

Hervé Bourlard, Jitendra Ajmera

IDIAP2002

Synthesis of monodispersed model catalysts using softlanding cluster deposition

Laurent Klinger

In nanocatalysis, clusters deposited on solid, well-defined surfaces play an important role. For the detection of size effects it is, however, important to prepare samples consisting of deposited clusters of a single size, as their chemical properties chan ...

De Gruyter2002

Structural and Electronic-Properties of Small Copper Clusters - a First Principles Study

Alfredo Pasquarello, Roberto Car

Equilibrium geometries and electronic properties of neutral Cu-n (n = 2, 3, 4, 6, 8, 10) clusters are determined via first principles calculations which treat s and d electrons on an equal footing. Overall, we find ground state and local minimum structures ...

1995

Semiempirical calculations of titanium dioxide (rutile) clusters

Ulf Anders Hagfeldt

The densities of states for small (TiO2)x-clusters, x = 1, 3, 6, 9, and 14, were calcd. by means of the INDO method. The shape of the valence bands' d. of states (DOS) are discussed in terms of the distribution of coordination nos. A one-slab cluster with ...

1992

Some considerations on "isoarithmic" and isoelectronic clusters

Wanda Andreoni

We briefly summarize with 14 refs. trends in the structural and electronic properties of small clusters of Na, Mg and Si. In particular, the validity of the spherical jellium picture is discussed and the applicability of the concepts used to classify magic ...

Springer1992