• openAccess   Conjugacy classes contained in normal subgroups: an overview 

      Beltrán, Antonio; Felipe, Maria José; Melchor Borja, Carmen University of Isfahan (2017)
      We survey known results concerning how the conjugacy classes contained in a normal subgroup and their sizes exert an in uence on the normal structure of a nite group. The approach is mainly presented in the framework ...
    • closedAccess   Point Patterns Occurring on Complex Structures in Space and Space-Time: An Alternative Network Approach 

      Eckardt, Matthias; Mateu, Jorge Taylor & Francis (2017-10)
      This article presents an alternative approach of analyzing possibly multitype point patterns in space and space–time that occur on network structures, and it introduces several different graph-related intensity measures. ...
    • openAccess   Queues in Ski Resort Graphs: the Ski-Optim Model 

      Barras, Tino; Doctor, Marut; Revilloud, Marc; Schumacher, Michael; Loubier, Jean-Christophe AGILE Digital Editions (2014-06)
      It is rather unknown how skiers move inside ski areas. However, new data collection systems, such as RFID chips on ski passes (which allow counting skiers at the gates of the cableways), can be used to analyse the movement ...
    • openAccess   Second-order and local characteristics of network intensity functions 

      Eckardt, Matthias; Mateu, Jorge Springer (2021)
      The last decade has witnessed an increase of interest in the spatial analysis of structuredpoint patterns over networks whose analysis is challenging because of geometricalcomplexities and unique methodological problems. ...