403 research outputs found

    Oil prices and sovereign credit risk of oil producing countries: an empirical investigation

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    The low oil price recently has caused fears about the sustainability of public finances in some oil producing countries. We examine the relationship between oil prices and sovereign credit risk examining the CDS market. Analysing data from nine countries (Brazil, Malaysia, Norway, Qatar, Russia, Saudi Arabia, the United Kingdom, the United States of America and Venezuela) we have estimated bivariate VAR-GARCH-in-mean models. The results of our empirical investigations generally speaking do suggest that positive oil price shocks lead to lower sovereign CDS spreads. Thus, our findings support the hypothesis that higher oil prices improve the fiscal stability of oil producing countries

    Le Cours Entier du Grand et Fameux Nil, Appellé La Rivière De L'Egypte Dans L'Ecriture Sainte Avec La Basse Et La Haute Egypte / par où il passe gravé Tobie Conrad Lotter Geogr. à Ausbourg

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    Die Digitalisierung wurde durch die Deutsche Digitale Bibliothek im Rahmen des von der Beauftragten der Bundesregierung für Kultur und Medien (BKM) geförderten Programms NEUSTART KULTUR ermöglicht.Maßstab in grafischer Form (Lieües de France)Mit 1 Nebenkarte: "L'Egipte Moderne"Titelkartusche oben links. - Erläuterungskartusche unten Mitte ("Le Cours Du Nil")Mit WindroseMit BergzeichnungOhne Kartennetz und RandgraduierungAltkart

    Bembidion laticolle

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    Bembidion laticolle et Dyschirius gracilis, recherchés le long du Rhin près de Coire, ainsi que le long de l’Inn en Basse-Engadine, n’ont par contre pas été retrouvés,Published as part of Chittaro, Yannick, Claude, François, Hoess, René, Marggi, Werner, Szallies, Alexander, Straumann, Tobias & Walter, Thomas, 2020, Amélioration des connaissances sur la distribution des Carabidés (Coleoptera: Carabidae) en Suisse: résultats 2018 - 2019 et synthèse finale, pp. 53-71 in Entomo Helvetica 13 on page 66, DOI: 10.5169/seals-985884, http://zenodo.org/record/808798

    External validation of anti-Müllerian hormone based prediction of live birth in assisted conception

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    <p>Background - Chronological age and oocyte yield are independent determinants of live birth in assisted conception. Anti-Müllerian hormone (AMH) is strongly associated with oocyte yield after controlled ovarian stimulation. We have previously assessed the ability of AMH and age to independently predict live birth in an Italian assisted conception cohort. Herein we report the external validation of the nomogram in 822 UK first in vitro fertilization (IVF) cycles.</p> <p>Methods - Retrospective cohort consisting of 822 patients undergoing their first IVF treatment cycle at Glasgow Centre for Reproductive Medicine. Analyses were restricted to women aged between 25 and 42 years of age. All women had an AMH measured prior to commencing their first IVF cycle. The performance of the model was assessed; discrimination by the area under the receiver operator curve (ROCAUC) and model calibration by the predicted probability versus observed probability.</p> <p>Results - Live births occurred in 29.4% of the cohort. The observed and predicted outcomes showed no evidence of miscalibration (p = 0.188). The ROCAUC was 0.64 (95% CI: 0.60, 0.68), suggesting moderate and similar discrimination to the original model. The ROCAUC for a continuous model of age and AMH was 0.65 (95% CI 0.61, 0.69), suggesting that the original categories of AMH were appropriate.</p> <p>Conclusions - We confirm by external validation that AMH and age are independent predictors of live birth. Although the confidence intervals for each category are wide, our results support the assessment of AMH in larger cohorts with detailed baseline phenotyping for live birth prediction.</p&gt

    U.S. stock prices and the dot.com-bubble: Can dividend policy rescue the efficient market hypothesis?

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    This paper thoroughly integrates speculative bubbles to corporate finance literature by focusing on dividend policy issues. More specifically, we examine the importance of dividend policy when testing for speculative bubbles in the S&P 500 equity index on a data set spanning 1871 to 2014. Given the phenomenon of dividend smoothing, in particular in the U.S., we question the usefulness of observed dividend payments as fundamental factor in testing for bubbles. Circumventing dividend smoothing, we construct hypothetical dividend payouts which are based on reported corporate earnings instead. The empirical evidence presented here indeed suggests that the dividend policy of firms affects testing for speculative bubbles. While the dot.com-bubble—commonly seen as the prime example for a stock price bubble not only in the NASDAQ but also in other, broader equity indices—is detected with the observed dividend series as fundamental factor, this is not necessarily the case with our adjusted dividend time series. Some of our results argue against a speculative price bubble in the broader U.S. stock market in the late 1990s

    Ryhiner-Kartensammlung / 38 La Haute et la Basse Silesie, divisée en XVII principautés et VI seigneuries : avec les confins des etâts circonvoisins

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    faite par Tobie Conrad Lotter, geographeStadtplan unten links: "La ville capitale de Breslau, du duché de Silesie, située sur l'Oder" (16 x 23 cm)Titelkartusche oben recht
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