Search Results - (Author, Cooperation:J. A. Resing)
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1Latest Papers from Table of Contents or Articles in PressJ. A. Resing ; P. N. Sedwick ; C. R. German ; W. J. Jenkins ; J. W. Moffett ; B. M. Sohst ; A. Tagliabue
Nature Publishing Group (NPG)
Published 2015Staff ViewPublication Date: 2015-07-15Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Hydrothermal Vents/*chemistry ; Metals/*chemistry ; *Models, Theoretical ; Pacific Ocean ; Seawater/*chemistry ; Water MovementsPublished by: -
2Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2014-07-11Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Iron/*analysis ; Seawater/*chemistryPublished by: -
3Articles: DFG German National LicensesStaff View
ISSN: 1572-9338Source: Springer Online Journal Archives 1860-2000Topics: MathematicsEconomicsNotes: Abstract In this paper we consider a tandem queueing model for a sequence of multiplexers at the edge of an ATM network. All queues of the tandem queueing model have unit service times. Each successive queue receives the output of the previous queue plus some external arrivals. For the case of two queues in series, we study the end-to-end delay of a cell (customer) arriving at the first queue, and the covariance of its delays at both queues. The joint queue length process at all queues is studied in detail for the 2-queue and 3-queue cases, and we outline an approach to the case of an arbitrary number of queues in series.Type of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesStaff View
ISSN: 1572-9443Keywords: Polling systems ; queue length distribution ; ergodicity conditions ; branching processes ; immigrationSource: Springer Online Journal Archives 1860-2000Topics: Computer ScienceNotes: Abstract The joint queue length process in polling systems with and without switchover times is studied. If the service discipline in each queue satisfies a certain property it is shown that the joint queue length process at polling instants of a fixed queue is a multitype branching process (MTBP) with immigration. In the case of polling models with switchover times, it turns out that we are dealing with an MTBP with immigration in each state, whereas in the case of polling models without switchover times we are dealing with an MTBP with immigration in state zero. The theory of MTBPs leads to expressions for the generating function of the joint queue length process at polling instants. Sufficient conditions for ergodicity and moment calculations are also given.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 1573-7594Keywords: discrete event systems ; max algebra ; periodicity ; critical circuit ; performance evaluationSource: Springer Online Journal Archives 1860-2000Topics: MathematicsNotes: Abstract The notions introduced in Braker and Resing (1992), concerning periodicity of 2×2 matrices in a generalized setup, are extended to the case of general square matrices. The asymptotic behaviour of a series of matrices is related to a particular type of circuit, called a generalized critical circuit, which is a circuit that is critical with respect to all the nodes it contains. It is shown that the asymptotic behaviour is determined only by the lengths of some generalized critical circuits, the weights of arcs in these circuits and some critical paths. This formulation is an appealing extension of the concepts of periodicity and critical circuit in the ‘usual’ max algebra. The term ‘asymptotic’ may give the impression that the described behaviour is only reached after a long or even infinite transient. However, the periodic regular part may be reached in only a few steps, after which the generalized critical circuits determine the future behaviour. As a corollary we obtain that each aperiodic graph contains at least one generalized critical circuit.Type of Medium: Electronic ResourceURL: