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  • Publication . Article . Preprint . Other literature type . 2020
    Open Access English
    Authors: 
    Mohit Gola; Florian M. Brunbauer; D. Janssens; A. Kumar; M. Lisowska; Hans Muller; Md. Naimuddin; Eraldo Oliveri; Dorothea Pfeiffer; L. Ropelewski; +4 more

    This work explores the use of multichannel readout electronics, already in use for quality assurance in gain uniformity studies, to measure the uniformity of the induction gap in Gas Electron Multipliers (GEM) based detectors. The devised procedure also provides a quali...

  • Publication . Article . Preprint . 2020
    Open Access English
    Authors: 
    Patrik Lundström; Johan Öinert;

    Let $R$ be a unital ring, let $E$ be a directed graph and recall that the Leavitt path algebra $L_R(E)$ carries a natural $\mathbb{Z}$-gradation. We show that $L_R(E)$ is strongly $\mathbb{Z}$-graded if and only if $E$ is row-finite, has no sink, and satisfies Condition...

  • Open Access English
    Authors: 
    Lu Lan; Fei Sun; Yichao Liu; C. K. Ong; Yungui Ma;

    Electromagnetic invisible devices usually designed by transformation optics are rather complicated in material parameters and not suitable for general applications. Recently a topology optimized cloak based on level-set method was proposed to realize nearly perfect cloa...

  • Open Access English
    Authors: 
    Ana-Hermina Ghenu; Alexandre Blanckaert; Roger K. Butlin; Jonna Kulmuni; Claudia Bank;
    Publisher: Cold Spring Harbor Laboratory
    Countries: Portugal, United Kingdom
    Project: NSF | Kavli Institute for Theor... (1125915), AKA | Centre of Excellence in B... (252411)

    The deposited article version is a post-print and is the "Accepted Author Manuscript" provided by Wiley and posted online on 12th January 2018. This publication hasn't any creative commons license associated. This deposit is composed by the main article plus the supplem...

  • Publication . Conference object . Article . Preprint . 2016 . Embargo End Date: 01 Jan 2016
    Open Access English
    Authors: 
    Colombino, Marcello; Dhingra, Neil K.; Jovanović, Mihailo R.; Rantzer, Anders; Smith, Roy; id_orcid0000-0002-8139-4683;
    Publisher: ETH Zurich
    Country: Switzerland
    Project: NSF | CPS: TTP Option: Synergy:... (1544887), NSF | Sparsity-promoting optima... (1407958)

    We consider a class of positive systems in which the control signal enters bilinearly with the state. Such dynamics arise naturally, for example, from modeling the evolutionary dynamics of HIV in the presence of drug therapy. For this class of system, we formulate an in...

  • Publication . Other literature type . Article . Preprint . 2006
    Open Access English
    Authors: 
    Friedrich Hegenbarth; Dušan Repovš;

    The validity of Freedman's disk theorem is known to depend only on the fundamental group. It was conjectured that it fails for nonabelian free fundamental groups. If this were true then surgery theory would work in dimension four. Recently, Krushkal and Lee proved a sur...

  • Open Access English
    Authors: 
    Borynskyi, V. Yu.; Polishchuk, D. M.; Melnyk, A. K.; Kravets, A. F.; Tovstolytkin, A. I.; Korenivski, V.;

    We investigate spin dynamics in nanodisc arrays of synthetic-antiferromagnets (SAF) made of Py/NiCu/Py trilayers, where the NiCu spacer undergoes a Curie transition at about 200 K. The observed ferromagnetic resonance spectra have three distinct resonance modes at room ...

  • Publication . Article . Preprint . Conference object . 2021
    Open Access English
    Authors: 
    Safinianaini, Negar; Bostr��m, Henrik;
    Publisher: KTH, Programvaruteknik och datorsystem, SCS
    Country: Sweden

    Mixtures of Hidden Markov Models (MHMMs) are frequently used for clustering of sequential data. An important aspect of MHMMs, as of any clustering approach, is that they can be interpretable, allowing for novel insights to be gained from the data. However, without a pro...

  • Open Access English
    Authors: 
    Tomaz Prosen;

    The Lindblad master equation for an arbitrary quadratic system of n fermions is solved explicitly in terms of diagonalization of a 4n x 4n matrix, provided that all Lindblad bath operators are linear in the fermionic variables. The method is applied to the explicit cons...

  • Open Access English
    Authors: 
    Yakubo, K.; Saijo, S.; Koro��ak, D.;

    Using a geographical scale-free network to describe relations between people in a city, we explain both superlinear and sublinear allometric scaling of urban indicators that quantify activities or performances of the city. The urban indicator $Y(N)$ of a city with the p...