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9 research outcomes, page 1 of 1
  • other research product . Other ORP type . 2008
    Open Access English
    Authors:
    Ashyraliyev, Maksat; Blom, Joke;
    Publisher: CWI
    Project: NWO | Simulation of development... (1900117215)

    Mathematical modelling of real-life processes often requires the estimation of unknown parameters. Once the parameters are found by means of optimization, it is important to asses the quality of the parameter estimates. In this paper we describe how the quality of these...

  • other research product . Other ORP type . 2003
    Open Access English
    Authors:
    Jibetean, Dorina; Klerk, Etienne;
    Publisher: CWI
    Project: NWO | Semidefinite Programming,... (1700113456)

    We consider the problem of global minimization of rational functions on $mathbb{R}^n$ (unconstrained case), and on an open, connected, semi-algebraic subset of $mathbb{R}^n$, or the (partial) closure of such a set (const rained case). We show that in the univariate case...

  • other research product . Other ORP type . 2010
    Open Access
    Authors:
    Pendavingh, R.; Zwam, Stefan;
    Publisher: Cornell University Library
    Project: NWO | Extensions of regular mat... (2300132515), NWO | Matroid Structure - for E... (2300153605)

    In the paper "Confinement of matroid representations to subsets of partial fields" (arXiv:0806.4487) we introduced the Hydra-k partial fields to study quinary matroids with inequivalent representations. The proofs of some results on these partial fields require extensiv...

  • other research product . Other ORP type . 2006
    Open Access English
    Authors:
    Collins, Pieter;
    Publisher: CWI
    Project: NWO | Computational Topology fo... (2000123828)

    In this paper we consider the computation of reachable, viable and invariant sets for discrete-time systems. We use the framework of type-two effectivity, in which computations are performed by Turing machines with infinite input and output tapes, with the representatio...

  • other research product . Other ORP type . 2010
    Open Access
    Authors:
    Mayhew, D.; Whittle, Geoff; Zwam, Stefan;
    Publisher: Cornell University Library
    Project: NWO | Extensions of regular mat... (2300132515)

    Fix a matroid N. A matroid M is N-fragile if, for each element e of M, at least one of M\e and M/e has no N-minor. The Bounded Canopy Conjecture is that all GF(q)-representable matroids M that have an N-minor and are N-fragile have branch width bounded by a constant dep...

  • other research product . Other ORP type . 2014
    French
    Authors:
    Simon-Delso, N.; Amaral-Rogers, V.; Belzunces, L. P.; Bonmatin, Jean-Marc; Chagnon, M.; Downs, C.; Furlan, L.; Gibbons, D. W.; Giorio, C.; Girolami, V.; ...
    Publisher: HAL CCSD
    Project: NWO | The long-lived positron e... (2300147150)

    .; Depuis leur découverte dans les années 1980, les pesticides néonicotinoïdes sont devenus la classe la plus largement utilisée des insecticides, dans le monde entier, avec des applications à grande échelle allant de la protection des plantes (cultures, légumes, fruits...

  • other research product . 2019
    Open Access English
    Authors:
    Gustafsson, Erik; Hagens, Mathilde; Sun, Xiaole; Reed, Daniel C.; Humborg, Christoph; Slomp, Caroline P.; Gustafsson, Bo G.;
    Project: NWO | Response of the Iron Biog... (2300182111), EC | PHOXY (278364)

    Enhanced release of alkalinity from the seafloor, principally driven by anaerobic degradation of organic matter under low-oxygen conditions and associated secondary redox reactions, can increase the carbon dioxide (CO2) buffering capacity of seawater and therefore ocean...

  • other research product . 2019
    Open Access English
    Authors:
    Fletcher, Tamara L.; Warden, Lisa; Sinninghe Damsté, Jaap S.; Brown, Kendrick J.; Rybczynski, Natalia; Gosse, John C.; Ballantyne, Ashley P.;
    Project: NSERC , NWO | Perturbations of System E... (2300181601), NSF | Collaborative Research: A... (1418421), EC | PACEMAKER (226600)

    The mid-Pliocene is a valuable time interval for investigating equilibrium climate at current atmospheric CO2 concentrations because atmospheric CO2 concentrations are thought to have been comparable to the current day and yet the climate and distribution of ecosystems ...

  • other research product . Other ORP type . 2010
    Open Access English
    Authors:
    Mayhew, D.; Whittle, Geoff; Zwam, Stefan;
    Publisher: Cornell University Library
    Project: NWO | Extensions of regular mat... (2300132515)

    A linkage of order k of a graph G is a subgraph with k components, each of which is a path. A linkage is vital if it spans all vertices, and no other linkage connects the same pairs of end vertices. We give a characterization of the graphs with a vital linkage of order ...

9 research outcomes, page 1 of 1