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10. Modelling Time-Varying Rankings with Autoregressive and Score-Driven Dynamics

Author

Holý, Vladimír and Zouhar, Jan

Subjects
Statistics - Methodology
Abstract

We develop a new statistical model to analyse time-varying ranking data. The model can be used with a large number of ranked items, accommodates exogenous time-varying covariates and partial rankings, and is estimated via the maximum likelihood in a straightforward manner. Rankings are modelled using the Plackett-Luce distribution with time-varying worth parameters that follow a mean-reverting time series process. To capture the dependence of the worth parameters on past rankings, we utilise the conditional score in the fashion of the generalised autoregressive score (GAS) models. Simulation experiments show that the small-sample properties of the maximum-likelihood estimator improve rapidly with the length of the time series and suggest that statistical inference relying on conventional Hessian-based standard errors is usable even for medium-sized samples. In an empirical study, we apply the model to the results of the Ice Hockey World Championships. We also discuss applications to rankings based on underlying indices, repeated surveys, and non-parametric efficiency analysis.

Published
2021
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12. Czech Women in Philosophy and Science Since 1918

Author

Jastrzembská, Zdeňka, Pichová, Dagmar, Zouhar, Jan, Alberts, Gerard, Series Editor, Arabatzis, Theodore, Series Editor, Friedrich, Bretislav, Series Editor, Hashagen, Ulf, Series Editor, Hoffmann, Dieter, Series Editor, Mitton, Simon, Series Editor, Pantalony, David, Series Editor, Valleriani, Matteo, Series Editor, Jastrzembská, Zdeňka, Pichová, Dagmar, and Zouhar, Jan

Published
2021
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13. 1820s–1918: An Expansion of Women’s Intellectual Pursuits

Author

Jastrzembská, Zdeňka, Pichová, Dagmar, Zouhar, Jan, Alberts, Gerard, Series Editor, Arabatzis, Theodore, Series Editor, Friedrich, Bretislav, Series Editor, Hashagen, Ulf, Series Editor, Hoffmann, Dieter, Series Editor, Mitton, Simon, Series Editor, Pantalony, David, Series Editor, Valleriani, Matteo, Series Editor, Jastrzembská, Zdeňka, Pichová, Dagmar, and Zouhar, Jan

Published
2021
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14. Before the 1820s: Setting the Stage for Women’s Intellectual Progress

Author

Jastrzembská, Zdeňka, Pichová, Dagmar, Zouhar, Jan, Alberts, Gerard, Series Editor, Arabatzis, Theodore, Series Editor, Friedrich, Bretislav, Series Editor, Hashagen, Ulf, Series Editor, Hoffmann, Dieter, Series Editor, Mitton, Simon, Series Editor, Pantalony, David, Series Editor, Valleriani, Matteo, Series Editor, Jastrzembská, Zdeňka, Pichová, Dagmar, and Zouhar, Jan

Published
2021
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15. Introduction

Author

Jastrzembská, Zdeňka, Pichová, Dagmar, Zouhar, Jan, Alberts, Gerard, Series Editor, Arabatzis, Theodore, Series Editor, Friedrich, Bretislav, Series Editor, Hashagen, Ulf, Series Editor, Hoffmann, Dieter, Series Editor, Mitton, Simon, Series Editor, Pantalony, David, Series Editor, Valleriani, Matteo, Series Editor, Jastrzembská, Zdeňka, Pichová, Dagmar, and Zouhar, Jan

Published
2021
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20. Význam a analýza lepku v potravinách, bezlepková výživa

Author

Adam, Martin, Zouhar, Jan, Adam, Martin, and Zouhar, Jan

Abstract

Tato bakalářská práce se zaměřuje na lepek, jeho význam v potravinářství a následně i jeho eliminaci z potravin - bezlepkovou výživu. Práce popisuje jednotlivé složky lepku a následně jejich analýzu. Dále se zabývá diagnostikou zdravotních obtíží souvisejících s lepkem a možnostmi léčby pacientů trpící některou z uvedených obtíží. V závěrečné časti jsou popsány hlavní benefity bezlepkové výživy a případně i její rizika., This bachelor thesis focuses on gluten, its importance in the food industry, and its subsequent elimination from the food - gluten-free nutrition. The thesis describes individual components of gluten and then their analysis. Furthermore, the thesis deals with the diagnosis of gluten-related health problems and treatment options for patients suffering from any of these problems. In the final part, the main benefits of a gluten-free nutrition are described, as well as possible risks., Fakulta chemicko-technologická, Student seznámil členy zkušební komise s obsahem své bakalářské práce, poté byl seznámen s posudkem vedoucího bakalářské práce. Student odpovědět na otázky členů zkušební komise., Dokončená práce s úspěšnou obhajobou

Published
2024

23. Arnošt Kolman’s Critique of Mathematical Fetishism

Author

Mácha, Jakub, Zouhar, Jan, Stadler, Friedrich, Series Editor, Bouveresse, Jacques, Advisory Editor, Carrier, Martin, Advisory Editor, Cartwright, Nancy, Advisory Editor, Creath, Richard, Advisory Editor, Ferrari, Massimo, Advisory Editor, Friedman, Michael, Advisory Editor, Galavotti, Maria Carla, Advisory Editor, Galison, Peter, Advisory Editor, Hacohen, Malachi, Advisory Editor, Hegselmann, Rainer, Advisory Editor, Heidelberger, Michael, Advisory Editor, Howard, Don, Advisory Editor, Hoyningen-Huene, Paul, Advisory Editor, Jabloner, Clemens, Advisory Editor, Kox, Anne J., Advisory Editor, Kusch, Martin, Advisory Editor, Lennox, James G., Advisory Editor, Mormann, Thomas, Advisory Editor, Morscher, Edgar, Advisory Editor, Mulligan, Kevin, Advisory Editor, Nemeth, Elisabeth, Advisory Editor, Nida-Rümelin, Julian, Advisory Editor, Niiniluoto, Ilkka, Advisory Editor, Pfersmann, Otto, Advisory Editor, Rédei, Miklós, Advisory Editor, Richardson, Alan, Advisory Editor, Schurz, Gerhard, Advisory Editor, Sluga, Hans, Advisory Editor, Sober, Elliott, Advisory Editor, Soulez, Antonia, Advisory Editor, Spohn, Wolfgang, Advisory Editor, Stöltzner, Michael, Advisory Editor, Uebel, Thomas E., Advisory Editor, Wagner, Pierre, Advisory Editor, Waters, C. Kenneth, Advisory Editor, Wolters, Gereon, Advisory Editor, Zeilinger, Anton, Advisory Editor, Essler, Wilhelm K., Honorary Editor, Holton, Gerald, Honorary Editor, Janik, Allan S., Honorary Editor, Kamlah, Andreas, Honorary Editor, Köhler, Eckehart, Honorary Editor, Manninen, Juha, Honorary Editor, McGuinness, Brian, Honorary Editor, Oeser, Erhard, Honorary Editor, Schuster, Peter, Honorary Editor, Šebestík, Jan, Honorary Editor, Sigmund, Karl, Honorary Editor, Thiel, Christian, Honorary Editor, Weingartner, Paul, Honorary Editor, Woleński, Jan, Honorary Editor, Stoppelkamp, Bastian, Advisory Editor, Kaller, Robert, Advisory Editor, and Schuster, Radek, editor

Published
2020
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26. Conclusion

Author

Jastrzembská, Zdeňka, Pichová, Dagmar, Zouhar, Jan, Alberts, Gerard, Series Editor, Arabatzis, Theodore, Series Editor, Friedrich, Bretislav, Series Editor, Hashagen, Ulf, Series Editor, Hoffmann, Dieter, Series Editor, Mitton, Simon, Series Editor, Pantalony, David, Series Editor, Valleriani, Matteo, Series Editor, Jastrzembská, Zdeňka, Pichová, Dagmar, and Zouhar, Jan

Published
2021
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33. Sortin2 enhances endocytic trafficking towards the vacuole in Saccharomyces cerevisiae

Author

Vásquez-Soto, Beatriz, Manríquez, Nicolás, Cruz-Amaya, Mirna, Zouhar, Jan, Raikhel, Natasha V, and Norambuena, Lorena

Subjects
Biochemistry and Cell Biology, Bioinformatics and Computational Biology, Biological Sciences, Genetics, Underpinning research, 1.1 Normal biological development and functioning, Generic health relevance, Alkanesulfonates, Biological Transport, Endocytosis, Phenotype, Plant Proteins, Protein Transport, Rhodanine, Saccharomyces cerevisiae, Secretory Pathway, Vacuoles, Sortin2, Trafficking modulator, Biochemistry & Molecular Biology, Biological sciences
Abstract

BackgroundA highly regulated trafficking of cargo vesicles in eukaryotes performs protein delivery to a variety of cellular compartments of endomembrane system. The two main routes, the secretory and the endocytic pathways have pivotal functions in uni- and multi-cellular organisms. Protein delivery and targeting includes cargo recognition, vesicle formation and fusion. Developing new tools to modulate protein trafficking allows better understanding the endomembrane system mechanisms and their regulation. The compound Sortin2 has been described as a protein trafficking modulator affecting targeting of the vacuolar protein carboxypeptidase Y (CPY), triggering its secretion in Saccharomyces cerevisiae.ResultsA reverse chemical-genetics approach was used to identify key proteins for Sortin2 bioactivity. A genome-wide Sortin2 resistance screen revealed six yeast deletion mutants that do not secrete CPY when grown at Sortin2 condition where the parental strain does: met18, sla1, clc1, dfg10, dpl1 and yjl175w. Integrating mutant phenotype and gene ontology annotation of the corresponding genes and their interactome pointed towards a high representation of genes involved in the endocytic process. In wild type yeast endocytosis towards the vacuole was faster in presence of Sortin2, which further validates the data of the genome-wide screen. This effect of Sortin2 depends on structural features of the molecule, suggesting compound specificity. Sortin2 did not affect endocytic trafficking in Sortin2-resistant mutants, strongly suggesting that the Sortin2 effects on the secretory and endocytic pathways are linked.ConclusionsOverall, the results reveal that Sortin2 enhances the endocytic transport pathway in Saccharomyces cerevisiae. This cellular effect is most likely at the level where secretory and endocytic pathways are merged. Them Sortin2 specificity over the endomembrane system places it as a powerful biological modulator for cell biology.

Published
2015

37. Conclusion

Author

Jastrzembská, Zdeňka, primary, Pichová, Dagmar, additional, and Zouhar, Jan, additional

Published
2020
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39. Introduction

Author

Jastrzembská, Zdeňka, primary, Pichová, Dagmar, additional, and Zouhar, Jan, additional

Published
2020
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42. Regional Peripheralization as Contextual Source of Populist Attitudes in Germany and Czech Republic.

Author

Dvořák, Tomáš, Zouhar, Jan, and Treib, Oliver

Subjects
*POPULISM, *POLITICAL attitudes, *POSTCOMMUNIST societies
Abstract

This article seeks to shed more light on the reasons for the regionally uneven distribution of populist attitudes. We take into account both individual-level and contextual drivers and focus mainly on the latter. We argue that regional peripheralization processes are a key contextual condition driving populist attitudes, especially in post-communist settings. The empirical analysis is based on a unique dataset combining comparable items from two representative surveys covering Germany (N = 2112) and the Czech Republic (N = 1000) with economic and demographic characteristics of relevant regional contexts in both countries (167 constituencies in Germany and 77 districts in the Czech Republic). Using multilevel regression models, the article shows that individual-level characteristics do not alone drive populist attitudes. In contrast, the results show that living in peripheral areas of the Czech Republic and eastern Germany increases the likelihood of having populist attitudes. These peripheries are characterized by unfavourable economic conditions in the Czech Republic and demographic decline in eastern Germany. [ABSTRACT FROM AUTHOR]

Published
2024
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