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Organizations increasingly use collaborative teams in order to create value for their stakeholders. This trend has given rise to a new research field: Collaboration Engineering. The goal of Collaboration Engineering is to design and deploy processes for high-value recurring collaborative tasks, and to design these processes such that practitioners can(More)
The centrality dependence of the charged-particle multiplicity density at midrapidity in Pb-Pb collisions at sqrt[s_{NN}]=2.76  TeV is presented. The charged-particle density normalized per participating nucleon pair increases by about a factor of 2 from peripheral (70%-80%) to central (0%-5%) collisions. The centrality dependence is found to be similar to(More)
The first measurement of the charged-particle multiplicity density at midrapidity in Pb-Pb collisions at a center-of-mass energy per nucleon pair √ S NN = 2.76 TeV is presented. For an event sample corresponding to the most central 5% of the hadronic cross section, the pseudorapidity density of primary charged particles at midrapidity is 1584 ± 4(stat) ±(More)
Most discrete event simulation environments are based on a process-oriented, and therefore multi-threaded paradigm. This results in simulation environments that are very hard to distribute over more computers, and not easy to integrate with scattered external information sources. The architecture presented here is based on the event-based DES paradigm which(More)
In order to support the conceptualization and specification of simulation models of complex systems, several <i>formalisms</i> or <i>world views</i> exist. Petri nets, differential equations, discrete event system specification and process interaction are typical examples. Throughout the last decade many have attempted to implement the <i>process(More)
The measurement of primary π ± , K ± , p and p production at mid-rapidity (|y| < 0.5) in proton–proton collisions at √ s = 7 TeV performed with a large ion collider experiment at the large hadron collider (LHC) is reported. Particle identification is performed using the specific ioni-sation energy-loss and time-of-flight information, the ring-imaging(More)
This article discusses two current indications for intraocular surgery for optic nerve conditions. The first topic is macular detachment in association with congenital optic disc pit, and includes a review of the theories of pathogenesis and management options including our own experience of treatment with vitrectomy and gas tamponade. In addition, the(More)
Most discrete event simulation environments are based on a process-oriented, and therefore multi-threaded paradigm. This results in simulation environments that are very hard to distribute over more computers, and not easy to integrate with scattered external information sources. The architecture presented here is based on the event-based DES paradigm which(More)
Information technology innovations, like web-services and object-oriented design, are fast finding their way into Business Information Systems (BIS). At the time similar developments in the field of business system simulation do not gain momentum. This observation, combined with research needs, has been the starting point for the development of an open,(More)
We report the first measurement of charged particle elliptic flow in Pb-Pb collisions at sqrt[S(NN)] =2.76 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurement is performed in the central pseudorapidity region (|η|<0.8) and transverse momentum range 0.2<p t<5.0 GeV/c. The elliptic flow signal v₂, measured using the 4-particle(More)