2,311 research outputs found

    Playing Muller Games in a Hurry

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    This work studies the following question: can plays in a Muller game be stopped after a finite number of moves and a winner be declared. A criterion to do this is sound if Player 0 wins an infinite-duration Muller game if and only if she wins the finite-duration version. A sound criterion is presented that stops a play after at most 3^n moves, where n is the size of the arena. This improves the bound (n!+1)^n obtained by McNaughton and the bound n!+1 derived from a reduction to parity games

    Versuch einer Geschichte der lettischen Literatur : Mit dem Bildnisz G. F. Stenders

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    https://www.ester.ee/record=b4012687*es

    Nachrichten über den Zustand der Unterrichtsanstalten des Goldingenschen Schulkreises

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    https://www.ester.ee/record=b4005404*es

    Post-delivery oxidative stress in women with preeclampsia or IUGR

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    Aim: To compare oxidative stress in patients with preeclampsia (PE) or intrauterine growth restriction (IUGR) vs. normal pregnancy (controls) during 48h after delivery. Study design: Women with singleton pregnancies were recruited immediately after delivery (gestational age >26.0weeks). Women with PE or IUGR were matched with healthy controls by age, BMI, gestational age and delivery mode. Venous blood samples and urine samples were tested for oxidative stress products 24h and 48h after delivery. Results: Plasma malondialdehyde (MDA) concentration 24h after delivery was significantly higher in subjects with PE or IUGR (3.41±1.14μmol/L, n=20) than in controls (2.91±0.82μmol/L, n=38) (P=0.04). Urine iPF2α-VI declined from 24 to 48h after delivery significantly in controls (P=0.006) and not in subjects with PE or IUGR (P=0.71). Conclusion: Of the markers tested only MDA is indicating higher oxidative stress in women with PE/IUGR than in normal pregnancy and only at 24h after delivery. No consistent pattern of change in the oxidative stress markers exists between 24-48h after deliver

    Scintillation light produced by low-energy beams of highly-charged ions

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    Measurements have been performed of scintillation light intensities emitted from various inorganic scintillators irradiated with low-energy beams of highly-charged ions from an electron beam ion source (EBIS) and an electron cyclotron resonance ion source (ECRIS). Beams of xenon ions Xeq+^{q+} with various charge states between qq=2 and qq=18 have been used at energies between 5 keV and 17.5 keV per charge generated by the ECRIS. The intensity of the beam was typically varied between 1 and 100 nA. Beams of highly charged residual gas ions have been produced by the EBIS at 4.5 keV per charge and with low intensities down to 100 pA. The scintillator materials used are flat screens of P46 YAG and P43 phosphor. In all cases, scintillation light emitted from the screen surface was detected by a CCD camera. The scintillation light intensity has been found to depend linearly on the kinetic ion energy per time deposited into the scintillator, while up to qq=18 no significant contribution from the ions' potential energy was found. We discuss the results on the background of a possible use as beam diagnostics e.g. for the new HITRAP facility at GSI, Germany.Comment: 6 pages, 8 figure

    Dimensionen politischer Konflikte: die Analyse von namentlichen Abstimmungen in Parlamenten mit dem Verfahren der Mokken-Skalierung

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    In dem Aufsatz stellen die Autoren ein probalistisches Skalierungsmodell ("Mokken-Skalierung") vor, mit dem sie das Abstimmungsverhalten der Abgeordneten und daran anknüpfend die Konfliktstrukturen der Frankfurter Nationalversammlung und der französischen Assemble Nationale Constituante analysieren. Im Zentrum der methodologischen Überlegungen steht dabei die oft schwierige "Übersetzung" von theoretischen Begriffen (wie Industrialisierung, legitime Herrschaft, Klassenbewußtsein) in empirische Indikatoren. Bestimmte Aspekte dieser in der Forschungspraxis oft nur intuitiv geleisteten Zuordnung werden durch die verschiedenen Skalierungsverfahren objektivierbar. Dabei haben sich - wie auch in der Kausalanalyse - deterministische Modelle (wie die Guttmann-Skalierung), die "Fehler" in den Beobachtungsgrößen oder Variablenbeziehungen nicht explizit berücksichtigen, in vielen Anwendungssituationen als zu restriktiv erwiesen. (pmb
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