Sökning: "Cluster"

Visar resultat 1 - 5 av 1208 avhandlingar innehållade ordet Cluster.

1. 1. Cluster Initiatives as Intermediaries : A Study of their Management and Stakeholders

   Författare :Inessa Laur; Magnus Klofsten; Dzamila Bienkowska; Peter Van der Sijde; Linköpings universitet; []
   Nyckelord :Cluster; cluster initiatives; intermediary organization; regional development; entrepreneurship; success factors; actors stakeholders and activities;

   Sammanfattning : This dissertation offers a platform to understand the nature of cluster initiatives as a socio-economic phenomenon combining cluster, entrepreneurship and intermediary features. They are particular types of ventures facilitating networks and dialog platforms adjusted to local contexts and offering a way to enhance regional development. LÄS MER

3. 2. Bayesian Cluster Analysis : Some Extensions to Non-standard Situations

   Författare :Jessica Franzén; Daniel Thorburn; Jukka Corander; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cluster analysis; Clustering; Classification; Mixture model; Gaussian; Bayesian inference; MCMC; Gibbs sampler; Deviant group; Longitudinal; Missing data; Multiple imputation; Statistics; Statistik; Statistics; statistik;

   Sammanfattning : The Bayesian approach to cluster analysis is presented. We assume that all data stem from a finite mixture model, where each component corresponds to one cluster and is given by a multivariate normal distribution with unknown mean and variance. LÄS MER

4. 3. Kunskap och innovation i ett moget kluster : En ekonomisk-geografisk studie av aluminiumindustrin i Småland-Blekinge

   Författare :Magnus Lagerholm; Anders Malmberg; Anders Waxell; Karl-Johan Lundquist; Uppsala universitet; []
   Nyckelord :Social and economic geography; economic geography; mature industry; cluster; agglomeration; systems of innovation; labour market mobility; Sweden; Kulturgeografi; kulturgeografi; Social and Economic Geography;

   Sammanfattning : The thesis aims at understanding mechanisms behind knowledge generation and learning in a mature cluster by analysing firms in south-east Sweden engaged in the development and manufacturing of aluminium products. The point of departure is in concepts and assumptions related to spatially concen-trated systems of similar and related firms and industries, such as agglomera-tions, clusters or innovation systems. LÄS MER

5. 4. Metal Cluster Reactivity. Adsorption of small molecules in biomolecular collisions

   Författare :Mats Andersson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; O2; CO; ionization potential; Con; Fen; NO; sticking probability; laser ionization; D2; Wn; Cun; Rhn; reaction probability; cluster; jellium model; Nbn; metal cluster reactivity; N2; time-of-flight mass spectrometry; Nin;

   Sammanfattning : Metal clusters can be characterized as the tiniest possible metal particles, containing only an easily counted number of atoms. In this work, reactions between metal clusters and diatomic molecules have been investigated. We have constructed an experimental set-up to produce and detect clusters, and to investigate their chemical reactivity. LÄS MER

7. 5. A Treatise on the Geometric and Electronic Structure of Clusters : Investigated by Synchrotron Radiation Based Electron Spectroscopies

   Författare :Andreas Lindblad; Olle Björneholm; Gunnar Öhrwall; Maxim Tchaplyguine; Paolo Milani; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cluster; nanoparticle; Heterogeneous; Homogeneous; Mixed; Cluster production methods; co-expansion; pick-up; doping; Cluster geometry; radial segregation; Interatomic Coulombic Decay; ICD; Auger electron spectroscopy; AES; X-ray photoelectron spectroscopy; XPS; Ultra-violet spectroscopy; UPS; Noble gas; Rare gas; Ne; Ar; Kr; Xe; Ammonia; NH3; Sulphur hexafluoride; SF6; MAX-lab; BESSY; Physics; Fysik;

   Sammanfattning : Clusters are finite ensembles of atoms or molecules with sizes in the nanometer regime (i.e. nanoparticles). This thesis present results on the geometric and electronic structure of homogeneous and heterogeneous combinations of atoms and molecules. LÄS MER