cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Isomonodromic differential equations and differential categories
Creators: name: Gorchinskiy, Sergey
name: Ovchinnikov, Alexey
Publisher: name: arXiv
Year: 2012
Subjects: subject: Commutative Algebra (math.AC)
subject: Classical Analysis and ODEs (math.CA)
subject: Category Theory (math.CT)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 12H05 (primary), 12H20, 13N10, 20G05, 20H20, 34M15, 34M56, 37K20 (secondary)

description: We study isomonodromicity of systems of parameterized linear differential equations and related conjugacy properties of linear differential algebraic groups by means of differential categories. We prove that isomonodromicity is equivalent to isomonodromicity with respect to each parameter separately under a filtered-linearly closed assumption on the field of functions of parameters. Our result implies that one does not need to solve any non-linear differential equations to test isomonodromicity anymore. This result cannot be further strengthened by weakening the requirement on the parameters as we show by giving a counterexample. Also, we show that isomonodromicity is equivalent to conjugacy to constants of the associated parameterized differential Galois group, extending a result of P. Cassidy and M. Singer, which we also prove categorically. We illustrate our main results by a series of examples, using, in particular, a relation between Gauss-Manin connection and parameterized differential Galois groups.
description: 31 pages
Integrated assessment of regional biofuel scenarios - a case study from India
Creators: name: Das, Subhashree
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2011
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 333

description: Eine Steigerung der Bioenergieproduktion ist oft mit multiplen Folgen verbunden. Dazu gehören Landkonversion, -degradation, -nutzungsintensivierung sowie eine zunehmende Nahrungsmittelunsicherheit. Ziel der Arbeit war es, ein umfassendes Verständnis der unterschiedlichen Wirkungszusammenhänge der Bioenergieversorgung in Indien mit Hilfe eines Modellierungsansatzes zu erlangen. Am Fallbeispiel des Bundesstaates Karnataka, wurden hierfür die politischen und sozio-ökonomischen Rahmenbedingungen, sowie die Produktivität, Verfügbarkeit und Allokation von landwirtschaftlichen Flächen für die Gewinnung von Biokraftstoff analysiert. Der Focus lag auf der Beurteilung der Auswirkungen auf die Nahrungsmittelproduktion. Im Rahmen eines integrierten Bewertungsverfahrens wurde die Simulationssoftware SITE (Simulation of Terrestrial Environments) angewendet, um Nahrungsmittel und Kraftstoffproduktion basierend auf zwei Zukunftsszenarien abschätzen zu können. Die Ergebnisse zeigen, dass die Biokraftstoffproduktion ohne Einschränkung der Ernährungssicherheit möglich ist, jedoch verbunden mit einer erhöhten Landnutzungsintensität. Eine nachhaltige Bioenergieproduktion ist zukünftig durch ein verbessertes Landmanagement möglich.
Hyperbolic Lambert Quadrilaterals and Quasiconformal Mappings
Creators: name: Vuorinen, Matti
name: Wang, Gendi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 51M09, 51M15

description: We prove sharp bounds for the product and the sum of two hyperbolic distances between the opposite sides of hyperbolic Lambert quadrilaterals in the unit disk. Furthermore, we study the images of Lambert quadrilaterals under quasiconformal mappings from the unit disk onto itself and obtain sharp results in this case, too.
description: 21 pages, 7 figures
Post-transition regions as locations for foreign direct investment of multinational enterprises
Creators: name: Gauselmann, Andrea
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2014
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: Multinationales Unternehmen
subject: Direktinvestition
subject: Wirtschaftsentwicklung
subject: Forschung und Entwicklung
subject: 332

description: Multinationale Unternehmen investieren im Ausland, um von standortspezifischen Vorteilen zu profitieren und ihre eigene Wettbewerbsfähigkeit zu verbessern. Gleichzeitig tragen sie zu einer Steigerung der Produktivität und einem wirtschaftlichen Aufholprozess am ausländischen Standort bei. Sie fungieren in diesem Sinne als Treiber für technologische und wirtschaftliche Entwicklung. Das Ziel der Dissertation ist es, einen Beitrag zur aktuellen Forschung zu leisten, indem untersucht wird, durch welche Determinanten ausländische Investoren bei der Standortwahl in den europäischen Post-Transformationsregionen beeinflusst werden, welche Motive sie bei ihrer Investition verfolgen, wie sie die Qualität der Standortfaktoren vor Ort beurteilen und unter welchen Bedingungen ein Austausch von Wissen und Technologie zwischen den ausländischen Tochterunternehmen und den Akteuren der einheimischen Wirtschaft stattfindet.
description: Multinational enterprises invest abroad to tap into location-specific advantages and to enhance their own competitiveness. At the same time, they increase productivity and industrial up-grading in the region of location and can be considered agents of technological and economic development. The aim of the thesis is to contribute to current research by investigating, which determinants and motives influence foreign investors to locate in European post-transition economies, how they appraise the quality of location factors on-site and under which conditions a knowledge and technology transfer takes place between the foreign owned firm and domestic firms, thereby leading to a better understanding of what is the impact and benefit of foreign investment in these regions.
Gamma Ray and Neutrino Flux from Annihilation of Neutralino Dark Matter at Galactic Halo Region in mAMSB Model
Creators: name: Modak, Kamakshya Prasad
name: Majumdar, Debasish
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We consider the lightest supersymmetric particle (LSP), neutralino in minimal anomaly mediated supersymmetry breaking model (mAMSB) to be a possible candidate for weakly interacting massive particles (WIMP) or cold dark matter and investigate its direct and indirect detections. The theoretically allowed supersymmetric parametric space for such a model along with the recent bounds from LHC is constrained by the WMAP results for relic densities. The spin independent and spin dependent scattering cross sections for dark matter off nucleon are thus constrained from the WMAP results. They are found to be within the allowed regions of different ongoing direct detection experiments. The annihilation of such dark matter candidates at the galactic centre produce different standard model particles such as gamma rays, neutrinos etc. In this work, we calculate the possible fluxes of these $γ$-rays and neutrinos coming from the direction of the galactic centre (and its neighbourhood) at terrestrial or satellite borne detectors. The calcutated $γ$-ray flux is compared with the observational results of HESS experiment. The neutrino flux of different flavours from the galactic centre and at different locations away from the galactic centre produced by WIMP annihilation in this model are also obtained for four types of galactic dark matter halo profiles. The detection prospects of such $ν_μ$ coming from the direction of the galactic centre at the ANTARES under sea detector are discussed in terms of muon signal yield from these muon neutrinos. Both the gamma and neutrino signals are estimated for four different dark matter halo profiles.
description: 34 pages LaTeX, 36 postscript figures; Text and figures modified, new figures added; version published in J. Phys. G
title: Introducción
Creators: name: Gómez Trueba, Teresa
name: Reinstädler, Janett
Publisher: name: Iberoamericana/Vervuert
Year: 2021
Subjects: subject: 300
subject: 860

description: Extranjeros, turistas, migrantes: Estudios sobre identidad y alteridad en las culturas hispánicas contemporáneas, p. 7
Non-normality in financial markets and the measurement of risk
Creators: name: Lau, Christian
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2015
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 330
subject: 332

description: Diese Dissertation ist in drei Kapitel sowie eine Einleitung unterteilt. Die Einleitung führt in das Themengebiet ein, fasst die Kapitel zusammen und zeigt deren Zusammenhänge auf. Jedes Kapitel beschäftigt sich mit der Analyse von Finanzzeitreihen. Dabei wird insbesondere den „stylized facts“ von Finanzzeitreihen Rechnung getragen. Am Ende der Kapitel erfolgt jeweils eine Value at Risk-Berechnung. Im ersten Kapitel wird die Verteilung von Renditen europäischer Staatsanleihen untersucht. Aufgrund von „fat tails“ und Schiefe ist es notwendig, Verteilungen zu benutzen, die beides abzubilden vermögen. Das zweite Kapitel widmet sich der Modellierung von Forwards auf Strom. Autoregressive Charakteristika zeigen sich sowohl im ersten als auch zweiten Moment und müssen in der Modellierung Berücksichtigung finden. Auf der Grundlage von Intraday Daten des DAX zeigt das letzte Kapitel einen neuen Ansatz, den Value at Risk zu berechnen, auf. Mit Hilfe von Prognosen der höheren Momente wird über die Momentenmethode die normal-inverse Gauss-Verteilung parametrisiert; über die Umkehrfunktion lässt sich im Anschluss der Value at Risk berechnen.
description: This thesis consists of three chapters including an introduction. The introduction familiarizes the topic, summarizes the chapters and links them together. Each chapter deals with the analysis of financial time series. Close attention is paid to the stylized facts of financial time series. At the end of each chapter a value at risk calculation is carried out. The first chapter examines the distribution of European government bonds. Due to heavy tails and skewness, the use of distributions accounting for both higher moments is necessary. The second chapter concerns the modelling of electricity forwards. Autoregressive features appear to be an issue in the first moment as well as the second and therefore, have to be considered during the modelling. Based on intraday data of the DAX the last chapter shows a new approach to calculate value at risk. Conducting forecasts for the higher moments the normal inverse distribution is parameterized with the method of moments; subsequently, with the application of the inverse function, the value at risk can be calculated.
Essays on trade patterns across South Caucasus and Central Asia and the role of Kazakhstan, Russia and Ukraine in the global wheat market
Creators: name: Imamverdiyev, Nizami
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2017
Subjects: subject: 330

description: Kasachstan, Russland und die Ukraine (KRU), auch unter der Bezeichnung Schwarzmeerregion bekannt, sind erstmals Mitte der 1990ziger als Weizenexporteure aufgetreten und tragen seitdem zur weltweiten Ernährungssicherung und dem globalen Agrarhandel bei. Insbesondere von 2000 bis 2010 machte der Marktanteil der Schwarzmeerländer einen Anteil von fünfzig Prozent an den Importen nach Südkaukasus und Zentralasien (SCCA) aus. Allerdings haben Änderungen in den Faktor- und Weizenpreisen wie auch unterschiedliche Politikmaßnahmen die Wettbewerbsfähigkeit der KRU-Länder beeinflusst. Darüber hinaus hat der gestiegene Exportanteil der Schwarzmeerländer den Wettbewerb im Weltweizenhandel verstärkt. Daher ist es das Ziel der Dissertation nicht nur die Wettbewerbsfähigkeit der KRU-Länder zu untersuchen sondern auch die Marktstruktur auf dem Weltweizenmarkt wie auch die Rolle der KRU-Länder in den SCCA Regionen.
description: Kazakhstan, Russia and Ukraine (KRU), collectively also referred to as the Black Sea region, have emerged as wheat exporters since the mid-1990s and have made contributions to world food security and the global agricultural trade. In particular, over the 2000-2010 period, the Black Sea region’s share in the South Caucasus and Central Asia (SCCA) region’s total imports was more than fifty percent. However, changes in input and wheat prices and several policy interventions have affected the competitiveness of KRU’s wheat exports. Moreover, due to an increase in the Black Sea region’s export shares, competition in the global wheat market has become more intense during the past decade. Therefore, the goals of this dissertation are to analyze KRU’s competitiveness and market structure in the world wheat market and to identify its role in the SCCA region.
title: Bienvenidos al Spanish Show: los personajes extranjeros en las novelas españolas durante el franquismo (1950-1970)
Creators: name: Gómez Trueba, Teresa
Publisher: name: Iberoamericana/Vervuert
Year: 2021
Subjects: subject: 860

description: Extranjeros, turistas, migrantes: Estudios sobre identidad y alteridad en las culturas hispánicas contemporáneas, p. 17
A model of enterprise-level crop yields under climate change - proof of concept, general computational strategy and partial implementation for the case of grain production in Saxony-Anhalt, Germany
Creators: name: Angelova, Denitsa
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2017
Subjects: subject: 330

description: In dieser Arbeit wird die Notwendigkeit eines neuen Ernte-Ertrags-Modells auf der Ebene von Unternehmen, welches die Folgewirkungen des Klimawandels abschätzt, hergeleitet. Das in der Arbeit vorgestellte Modell zur Prognose der landwirtschaftlichen Erträge auf Unternehmensbasis kombiniert ökomische und agronomische Vorstellungen über die Produktion von landwirtschaftlichen Kulturen. Eine generelle Strategie zur praktischen Umsetzung des Modells wird präsentiert. Im Rahmen dieser Strategie wird eine neue geometrische Interpretation des Koeffizienten der Risikoaversion eingeführt, die dessen Identifikation erleichtert. Auch ein neuer Indikator zur Aufdeckung von Naturzuständen wird als methodischer Beitrag vorgeschlagen. Auf der empirischen Seite stellt die Arbeit die Schätzung einer zustandsabhängigen Produktionsfunktion für den Getreidesektor in Sachsen-Anhalt (Deutschland) vor, die basierend auf simulierten Daten die Hypothese von einer Output-Cubical-Technologie abgelehnt.
description: This thesis establishes the need for a novel enterprise-level crop yield model under climate change. A model for the approximation of enterprise-level crop yields under climate change is proposed, which integrates both economic and agronomic notions of crop production. A general computational strategy for the proposed model is provided. The strategy introduces a novel geometrical interpretation of the coefficient of risk-aversion, which is intrinsic to the farmer, as well as an approach to infer this coefficient of risk-aversion from farm-level accounting data. A new indicator to detect the nature states is also proposed as a methodological contribution based on the previous work by the author. On the empirical side, the thesis offers an estimation of a state-contingent production function for the crop-producing sector in the Federal State of Saxony-Anhalt, Germany. Based on simulated data the estimation rejects the hypothesis of an output cubical technology.
Essays on education and pension policies in rural China
Creators: name: Zhao, Qiran
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2014
Subjects: subject: China
subject: Arbeitnehmer
subject: Migration
subject: Rente
subject: Ländliche Entwicklung
subject: Online-Publikation
subject: Hochschulschrift
subject: 630
subject: 330

description: In China führten Reformen seit 1978 zu gewaltigen wirtschaftlichen Umwälzungen, doch die zunehmende Urbanisierung stellt das Land vor große Herausforderungen. Zunächst fehlt für die Produktivitätssteigerung der Industrie ein adäquates ländliches Bildungssystem. Zweitens verbleiben durch den Rückgang ländlicher Beschäftigung und die Arbeitsmigration in Städte viele Senioren allein auf dem Land. Die nachfolgenden Essays behandeln diese Problemfelder, indem sie verschiedene Aspekte sozioökonomischer Bedingungen im ländlichen China diskutieren. Zwei der Studien zielen auf die Identifikation von Wegen zur Verbesserung des ländlichen Bildungssystems, die dritte Studie befasst sich mit dem ländlichen Rentensystem, welches kürzlich zur materiellen Absicherung der ländlichen Bevölkerung im Rentenalter eingeführt wurde. Die drei Essays finden Anhaltspunkte für negative Effekte von Arbeitsmigration der Eltern auf die Schulbildung von Kindern, die Verbesserung der Ernährung und Gesundheit von Kindern durch Ausgabe von Ernährungsinformationen an Eltern, sowie Wege zur Erhöhung der Teilnahme am Rentensystem, um Altersarmut vorzubeugen.
description: The economy of China has experienced huge changes after the reforms in 1978. However, during the process of urbanization, development of China faced challenging. First, the rural labor needs to get adequate education to support the industries to move up the productivity ladder. Second, the rise of off-farm employment and rural-to-urban migration often leave the elderly to live on their own. To answer these questions, three essays were done by studying on different aspects of socioeconomic conditions in rural China. Two studies were carried out aiming to identify pathways to an improvement of rural education. The third study addresses the rural pension program recently introduced to improve material security for rural population in retirement age. The study provides evidences on negative effects of children’s schooling in rural China when their families split up due to parents’ labor migration, the study finds that teaching parents on nutrition can help to improve their children’s diets and health, and the study also identifies ways to successfully encourage participation in a pension program and mitigate future poverty of aged.
Detektion von Directed Hate Speech, Online Harassment und Cyberbullying in Online Communities
Creators: name: Bretschneider, Uwe
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2017
Subjects: subject: 330;004

description: In Online Communities verbreiten sich digitale Inhalte schnell und weitestgehend ohne Inhaltsprüfungen, wodurch die Gefahr des Missbrauchs für hasserfüllte Kommunikation besteht. Die Zunahme dieser als Hate Speech bezeichneten Inhalte veranlasst Online Communities zum Einsatz von Personal, um derartige Fälle manuell zu erkennen. Aufgrund der Vielzahl an Nachrichten ist dies jedoch arbeits- und kostenintensiv. Das Ziel der Dissertation besteht darin, Verfahren zur automatischen Detektion von Hate Speech in Online Communities zu konzipieren und zu implementieren. Die entwickelten Verfahren basieren auf einem Sequenzmodell zur Strukturierung von Texten und einem Pattern-basierten Ansatz zur Detektion von Bezügen zwischen hasserfüllten Wörtern und referenzierten Opfern. Die Evaluationsresultate zeigen eine Verbesserung der Klassifikationsgüte gegenüber existierenden Verfahren. Zudem ermöglicht das Verfahren die Analyse von zusammenhängender Kommunikation in Rahmen von Cyberbullying.
description: The digital nature of Online Communities allows unrestricted and anonymous exchange of content. Consequently, they are vulnerable for abuse, especially in the form of offending communication (Hate Speech). The rising amount of Hate Speech causes Online Communities to hire personnel that manually examines user generated content to detect such cases. However, due to the vast number of messages, this task is labor-intensive and time-consuming. The goal of this dissertation is to design and implement software artifacts to automatically detect Hate Speech including the referenced victims. The developed methods are based on a sequence model to structure texts and a pattern-based approach to detect grammatical links between hateful words and the referenced victims. The presented method achieves improvements compared to existing approaches with respect to the classification performance. Additionally, it enables the analysis of interrelated communication that is typical for Cyberbullying.
Il teatro come unico cielo: il testo, la voce, l'uditorio
Creators: name: Paganelli, Daniele A.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: L-ART/07 Musicologia e storia della musica
L-FIL-LET/14 Critica letteraria e letterature comparate
M-PED/04 Pedagogia sperimentale
M-PSI/04 Psicologia dello sviluppo e psicologia dell'educazione
M-PED/03 Didattica e pedagogia speciale
L-ART/05 Discipline dello spettacolo
M-PSI/06 Psicologia del lavoro e delle organizzazioni
L-FIL-LET/10 Letteratura italiana
M-FIL/04 Estetica

description: Grotowski, Stanislavskij, Artaud, Bene... come Odisseo l’attore attraversa la storia del teatro, la storia dell’umanità, adoperandosi per quel risultato comune visibile attraverso lo spettacolo:
esemplificazione di  tale unico cielo. Aver riportato l’uomo al centro del teatro, l’attore al centro della scena, è anche domandarsi come questa reazione possa continuare. Il  metodo di Alschitz, del quale riporto un’esperienza diretta, nasce per  mantenere tale centralità e sostenere il teatro in una prospettiva di  utilità all’interno delle dinamiche contemporanee. Nella messinscena, divengono centrali non la parola (che è testo,  opera  scritta, autore)  ma  piuttosto l’attore  col suo  “gesto vocale”  (cioè, ancora una volta, l’uomo):
voce che significa al di là della parola detta, che significa anche nel suo silenzio, voce quale momento  di presenza umana e unicità.
Emerge l’intimità vissuta pubblicamente  nell’atto della scena: in quella illusione gli inganni non sono possibili,  c’è solo verità.
Il testo non è rinnegato, ma è semplicemente un mezzo per incontrare qualcuno o qualcosa, in sintesi, un mezzo per “incontrarsi”. Il teatro è il luogo dell’incontro, di quell'appuntamento.
An investigation into the causes of the low share of women among corporate farm managers in Germany
Creators: name: Lehberger, Mira
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2015
Subjects: subject: Deutschland
subject: Landwirtschaft
subject: Weibliche Führungskraft
subject: Unternehmensleitung
subject: Online-Publikation
subject: Hochschulschrift
subject: 630
subject: 330

description: Obwohl regelmäßig 50% der Absolventen der Agrar- und Ernährungswissenschaften in Deutschland weiblich sind, wird nur ca. jedes zehnte landwirtschaftliche Unternehmen von einer Frau geleitet. Dies wirft zwei zentrale Fragen auf: Werden qualifizierte Frauen von den derzeitigen Entscheidungsträgern weniger als Nachwuchsführungskräfte in Betracht gezogen? Oder haben die Frauen selbst weniger Interesse an derartigen Positionen? Um diesen Fragen nachzugehen, wurden auf der einen Seite sieben Fokusgruppendiskussionen und eine quantitative Befragung mit Studierenden durchgeführt. Auf der anderen Seite wurden sieben leitfadengestützte Interviews und eine Onlineumfrage mit Betriebsleiterinnen und Betriebsleitern geführt. Die Auswertung der Daten deuten darauf hin, dass die Gründe für den geringen Frauenanteil sowohl auf der Angebotsseite, d. h. bei qualifizierten Frauen selbst, als auch auf der Nachfrageseite, d. h. beim derzeitigen Führungspersonal, zu verorten sind.
description: Replacements for corporate farm managers are increasingly hard to find. At the same time, there is a large pool of potential managers that has been hardly tapped into: young female professionals. This provokes two central questions: are women at a disadvantage when farm management vacancies are filled? Are farm manager positions not attractive for qualified women? To shed light on these questions, we carried out seven focus group discussions and a quantitative pen-and-paper survey with agricultural science students. In addition, we conducted seven guideline interviews and an online survey with farm managers. The analyses of the data indicate that the disproportionately low share of female farm managers stems from both the supply side (i.e., the women who are qualified to fill in management vacancies) and the demand side (i.e., the decision-makers who recruit management staff).
Monetary and fiscal policy analyses in estimated DSGE models
Creators: name: Drygalla, Andrej
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2016
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 332

description: Die Dissertation untersucht drei verschiedene geld- bzw. fiskalpolitische Fragestellungen im Rahmen von geschätzten dynamischen stochastischen allgemeinen Gleichgewichtsmodellen (DSGE-Modellen). Zum einen wird mittels eines Markov-Regimewechsel-Modells analysiert, inwiefern sich die Geldpolitik in der Tschechischen Republik, Polen und Ungarn im Zuge des Strategiewechsels zu einer direkten Inflationssteuerung de facto verändert hat und wie erfolgreich sich die neue Strategie im Hinblick auf die Stabilisierung von Zielvariablen erwiesen hat. Weiterhin wird die geschätzte gegenwärtige Geld- und Währungspolitik in Russland hinsichtlich der Auswirkungen simultan auftretender Ölpreis- und Kapitalflussschocks gegenüber Politikalternativen bewertet. Abschließend wird analysiert, ob und inwiefern die Maßnahmen der deutschen Konjunkturpakete während der Großen Rezession zur Stabilisierung der Konjunktur beigetragen haben.
description: The thesis examines three different monetary and fiscal policy issues in frameworks of estimated dynamic stochastic general equilibrium (DSGE) models. At first, a Markov switching model is employed to analyze the extent to which monetary policy in the Czech Republic, Poland and Hungary has de facto changed following the introduction of inflation targeting and how successful the newly adopted strategy proved to be in the context of stabilizing target variables. Furthermore, the estimated Russian monetary and exchange rate policy in place is evaluated and compared to policy alternatives with regard to the impact of simultaneously occurring shocks to the oil price as well as capital flows. Finally, it is assessed to which extent the measures of the German stimulus packages during the Great Recession have contributed to a stabilization of the economic activity.
Refinement Modal Logic
Creators: name: Bozzelli, Laura
name: van Ditmarsch, Hans
name: French, Tim
name: Hales, James
name: Pinchinat, Sophie
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In this paper we present {\em refinement modal logic}. A refinement is like a bisimulation, except that from the three relational requirements only `atoms' and `back' need to be satisfied. Our logic contains a new operator 'all' in addition to the standard modalities 'box' for each agent. The operator 'all' acts as a quantifier over the set of all refinements of a given model. As a variation on a bisimulation quantifier, this refinement operator or refinement quantifier 'all' can be seen as quantifying over a variable not occurring in the formula bound by it. The logic combines the simplicity of multi-agent modal logic with some powers of monadic second-order quantification. We present a sound and complete axiomatization of multi-agent refinement modal logic. We also present an extension of the logic to the modal mu-calculus, and an axiomatization for the single-agent version of this logic. Examples and applications are also discussed: to software verification and design (the set of agents can also be seen as a set of actions), and to dynamic epistemic logic. We further give detailed results on the complexity of satisfiability, and on succinctness.
Formazione avanzata nel settore delle rocce ornamentali e delle geoelaborazioni
Creators: name: Bruno, Roberto
name: Focaccia, Sara
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: GEO/09 Georisorse minerarie e applicazioni mineralogico- petrografiche per l'ambiente ed i beni culturali
ICAR/06 Topografia e cartografia

description: Questa è la prima Edizione che raccoglie i principali lavori scientifici dei partecipanti al programma di scambio FARO - Formaçao Avançada no Setor das Rochas Ornamentais e do Geoprocessamento (2005-2009), una rete centrata sulle rocce ornamentali o, per dirla in maniera corrente, su “marmi e graniti”.Un “filo”comune sottintende tutti i lavori, ed è la questione della “caratterizzazione”. La caratterizzazione è l’azione che produce l’informazione necessaria a prendere le decisioni e ciascuna decisione ha bisogno dei propri dati caratterizzanti. Le scuole aderenti alla rete FARO affrontano diverse questioni, svolgono delle analisi specifiche e tentano di offrire delle soluzioni mediante delle caratterizzazioni le più avanzate possibile.
I contributi sono sati raggruppati in due Sezioni: I) La tecnologia della caratterizzazione; II) La caratterizzazione dei materiali. Nella prima sezione sono stati raccolti i lavori in cui è prevalente l’attenzione alle nuove tecnologie o alle nuove applicazioni delle tecnologie. La seconda sezione raccoglie contributi maggiormente centrati sui materiali nuovi o poco noti.
Bond yields - models and moments
Creators: name: Gabriel, Christian
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2015
Subjects: subject: Anleihe
subject: Rendite
subject: Verteilung
subject: Kredit-Rating
subject: Staatsanleihe
subject: Online-Publikation
subject: Hochschulschrift
subject: 332

description: Neben der Einleitung ist die Dissertation in zwei Teile aufgeteilt. In Teil I wird die Annahme eines Investors mit μ-σ Präferenz getroffen. Das erste Kapitel stellt ein Multi-Rating ATSM unter Arbitragefreiheit mit dem klaren Fokus auf Zinsstrukturkurvenmodelle für Unternehmensanleihen vor. Im zweiten Kapitel des ersten Teils werden gemeinsame Risikofaktoren in U.S. amerikanischen und britischen Staatsanleihenrenditen in der Periode von 1983 bis 2012 untersucht. Der Zweite Teil der Dissertationsschrift untersucht einen anspruchsvolleren Investor. Im vierten Kapitel wird die statistische Verteilung von täglichen Anleihenrenditen von europäischen Staatsanleihen im Zeitraum 1999 bis 2012 untersucht.
description: Besides the introduction, the thesis is organized in two parts. Part I assumes a bond investor with μ-σ preferences. The first chapter presents a convenient multi-rating ATSM with no-arbitrage restrictions, focusing on the application to the term structure of interest rates for corporate bonds. The second chapter of Part I investigates common factors in U.S. and U.K. treasury yields in the period 1983 to 2012. Part II studies a more sophisticated investor. Particularly, Chapter 4 assesses the statistical distribution of daily EMU bond returns for the period 1999 to 2012.
Vanishing largest Lyapunov exponent and Tsallis entropy
Creators: name: Kalogeropoulos, Nikos
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We present a geometric argument that explains why some systems having vanishing largest Lyapunov exponent have underlying dynamics aspects of which can be effectively described by the Tsallis entropy. We rely on a comparison of the generalised additivity of the Tsallis entropy versus the ordinary additivity of the BGS entropy. We translate this comparison in metric terms by using an effective hyperbolic metric on the configuration/phase space for the Tsallis entropy versus the Euclidean one in the case of the BGS entropy. Solving the Jacobi equation for such hyperbolic metrics effectively sets the largest Lyapunov exponent computed with respect to the corresponding Euclidean metric to zero. This conclusion is in agreement with all currently known results about systems that have a simple asymptotic behaviour and are described by the Tsallis entropy.
description: 15 pages, No figures. LaTex2e. Some overlap with arXiv:1104.4869 Additional references and clarifications in this version. To be published in QScience Connect
Zum Stofftransportprozess über eine Flüssig-Flüssig-Phasengrenze
Creators: name: Hunger, Andrea
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2015
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 660
subject: 620

description: In der vorliegenden Arbeit wird der Stofftransport des fluoreszierenden Farbstoffs Rhodamin 6G durch eine Flüssig-Flüssig-Phasengrenze in drei verschiedenen Lösungsmittelsystemen (Wasser-Isobutanol, Wasser-1-Heptanol und Wasser-1-Decanol) untersucht. Als Messmethode wird die Laserinduzierte Fluoreszenz eingesetzt. Es werden die Probleme der Messmethode aufgezeigt, und es wird nachgewiesen, dass mit diesen Problemen umgegangen werden kann, sodass diese nicht den gemessenen Profilverlauf verfälschen. Als Ergebnis liegen zeitlich aufgelöste, zweidimensionale Konzentrationsprofile vor. Die Profile sind durch einen Gradienten im Phasengrenzbereich, der in Abhängigkeit vom Stoffsystem und Gleichgewichtszustand sich über 0,5 bis 2 mm erstreckt, geprägt. Die sich einstellenden Extremkonzentrationen liegen oberhalb der Systemgleichgewichtswerte. Erklärt wird dieses Verhalten anhand des Phasendiagramms und mit dem Chemischen Potential als treibende Kraft. Auf Basis dessen wird ein Modellansatz entwickelt und geprüft. Die Prüfung ergab, dass dieser Ansatz unter Einhaltung der Randbedingungen das Verhalten im Phasengrenzbereich nicht beschreiben kann.
description: In the work presented the mass transport of the fluorescent dye rhodamine 6G at a liquid-liquid-interface is investigated in three different solvent systems (water-isobutanol, water-1-heptanol and water-1-decanol). Laser induced fluorescence is used as a measuring method. Challenges associated with this method are presented and discussed. It was possible to prove that the experimental results show no distortion of the measured concentration profile, which supports the suitability of the measuring method developed. The results are available as time-resolved, two-dimensional concentration profiles. The profiles are characterized by a gradient in the interfacial region, which extends over 0.5 to 2 mm depending on the solvent system and the equilibrium state. The observed extreme concentrations are above the system equilibrium values. This behaviour is explained on the basis of phase diagrams and the chemical potential being the driving force. Based on the approach described a model was developed and tested. Validation of the model revealed that by adhering to the boundary condition processes at the phase boundary cannot be described.
Life Insurance Purchasing to Maximize Utility of Household Consumption
Creators: name: Bayraktar, Erhan
name: Young, Virginia R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Portfolio Management (q-fin.PM)
subject: FOS: Economics and business

description: We determine the optimal amount of life insurance for a household of two wage earners. We consider the simple case of exponential utility, thereby removing wealth as a factor in buying life insurance, while retaining the relationship among life insurance, income, and the probability of dying and thus losing that income. For insurance purchased via a single premium or premium payable continuously, we explicitly determine the optimal death benefit. We show that if the premium is determined to target a specific probability of loss per policy, then the rates of consumption are identical under single premium or continuously payable premium. Thus, not only is equivalence of consumption achieved for the households under the two premium schemes, it is also obtained for the insurance company in the sense of equivalence of loss probabilities.
description: Keywords: Life insurance, utility maximization, optimal consumption, optimal investment, exponential utility
Meta-analysis of human methylomes reveals stably methylated sequences surrounding CpG islands associated with high gene expression
Creators: name: Edgar, Rachel
Publisher: name: University of British Columbia
Year: 2015

description: DNA methylation is thought to play an important role in the regulation of mammalian gene expression. Part of the evidence for this role is the observation that lack of CpG island methylation in gene promoters is associated with high transcriptional activity. However, CpG island methylation level only accounts for a fraction of the variance in gene expression, and methylation in other domains is hypothesized to play a role (e.g., island shores and shelves). We set out to improve understanding of the human methylome through a meta-analysis approach, using 1737 samples from 30 publicly available studies. An initial screen identified 15224 CpGs that are “ultra-stable” in their state, being always fully methylated or unmethylated across diverse tissues, cell types and developmental stages (974 always methylated; 14250 always unmethylated). A further analysis of ultra-stable CpGs led us to identify a novel class of CpG islands, “ravines”, that exhibit a markedly consistent pattern of low methylation with highly methylated flanking shores and shelves. Our findings were validated using independent and heterogeneous datasets assayed on the same and different technologies. Building on additional existing data types such as gene expression microarrays, DNase hypersensitive sites, and histone modifications, we found that ravines are associated with higher gene expression, compared to typical unmethylated CpG islands. This finding suggests a novel role for methylation in promoters, markedly different from the traditional view that active promoters need to be unmethylated. We propose ravines are a new class of CpG islands, established early in development and maintained through differentiation, that mark universally active genes and provide new evidence that methylation beyond the CpG island could play a role in gene expression.
Modelling macroeconomic risk - the genesis of the European debt crisis
Creators: name: Schweinitz, Gregor
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2013
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 332
subject: 330

description: Divergierende Effektivzinsen auf europäische Staatsanleihen nach 2008 sind das offensichtlichste Zeichen für die Schulden- und Vertrauenskrise in Europa. Diese Dissertation untersucht in einem ersten Schritt verschiedene Risikodeterminanten dieser Effektivzinsen. Es kann gezeigt werden, dass es in Zeiten von hoher Unsicherheit an den Finanzmärkten zu einer signifikanten Fluchtbewegung in hochliquide Anleihen kommt. In einem zweiten Schritt werden hohe Effektivzinsen als Zeichen der Existenz einer Krise interpretiert. Mit Hilfe des Signalansatzes wird die Frühwarnkapazität von vier verschiedenen Vorschlägen für die Ausgestaltung des Scoreboards getestet, das Teil des im Dezember 2011 von der europäischen Kommission beschlossenen 'Verfahrens zur Vermeidung makroökonomischer Ungleichgewichte' ist. Es wird vorgeschlagen, möglichst viele und breit verteilte Indikatoren in das Scoreboard aufzunehmen. In einem dritten Schritt wird der Signalansatz um Signifikanzmaße erweitert.
description: Diverging European sovereign bond yields after 2008 are the most visible sign of the European debt crisis. This dissertation examines in a first step, to which extent the development of yields is driven by credit and liquidity risk, and how it is influenced by general uncertainty on financial markets. It can be shown that yields are driven to a significant degree by a flight towards bonds of high liquidity in times of high market uncertainty. In a second step, high yields are interpreted as a sign of an existing crisis in the respective country. Using the signals approach, the early-warning capabilities of four different proposals for the design of the scoreboard as part of the 'Macroeconomic Imbalances Procedure' (introduced in December 2011 by the European Commission) are tested, advocating a scoreboard including a variety of many different indicators. In a third step, the methodology of the signals approach is extended to include also results on significance.
Gauge theory webs and surfaces
Creators: name: Erdoğan, Ozan
name: Sterman, George
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the perturbative cusp and closed polygons of Wilson lines for massless gauge theories in coordinate space, and express them as exponentials of two-dimensional integrals. These integrals have geometric interpretations, which link renormalization scales with invariant distances.
description: 24 pages, 5 figures, v2: extended discussion, v3: published version
Il diritto d'autore e i Learning Objects:risultati di un gruppo di lavoro presso l'Università di Bologna
Creators: name: Comba, Valentina Elvira
name: Turchi, Maria Elena
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: IUS/04 Diritto commerciale
M-PED/03 Didattica e pedagogia speciale

description: The current debate about the Learning Objects’ rights management is broad  and very interesting. We should view these peculiar legal aspects in the frame of the digital rights management, and, moreover, in the  wide context of the e-learning business and cultural models. The Authors present the objectives and some operational solutions found by a Working Group at the University of Bologna. The Working Group on   “ Learning Objects rights management” within the University of Bologna,  discussed a variety of situations and case studies and issued some suggestions and licenses; the report present the results in the context of the national and international evolving frame of the copyright legislation. 

Il dibattito sui “diritti d’Autore e di sfruttamento commerciale dei Learning Objects” rappresenta, a tutt’oggi, una tematica di grande attualità; le questioni giuridiche collegate alla gestione dei diritti in ambienti digitali devono essere inserite in un contesto molto più complesso, “quello dei  modelli culturali ed economici dell’e-learning”. In quest’ambito, gli Autori presentano la direzione d’intervento che ha governato le azioni di un gruppo di lavoro costituito all’interno di una Istituzione intenzionalmente formativa, l’Università di Bologna, e che ha cercato di rispondere in modo efficace alle esigenze “locali” all’interno  dl un contesto normativo nazionale ed internazionale in forte evoluzione.
Diálogo y lengua española en contextos de comunicación mediada por ordenador
Creators: name: Pano, Ana
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: L-LIN/07 Lingua e traduzione - Lingua spagnola

description: Nel presente saggio, Ana Pano propone un modello basato nel dialogo protitipico e i suoi componenti principali quali l’interattività e l’intenzionalità, per capire il complesso fenomeno della comunicazione mediata dal computer (CMC) ed indagare come la lingua spagnola si trasforma in contesti quali i canali di chat, i forum, la posta elettronica e i blog. Lo studio prende in considerazione i principali modelli teorici ed esplicativi sulla CMC per ampliarli in una nuova prospettiva. Estendendo dunque alcune questioni sul carattere scritto-orale dei messaggi, la sincronia-asincronia delle interazioni e la formazione e la trasformazione dell’identità e della comunità in questi contesti, il modello dialogico permette di spiegare perché nella Rete si assiste a uno scambio conversazionale costante in cui, tra le altre cose, si richiede certa organizzazione nell’alternanza dei turni, è fondamentale l’elezione dell’interlocutore, si scrive nella direzione della voce ed imitando il movimento del pensiero, si rimanda constantemente al contesto, si richiede una risposta immediata. Il canale permanentemente aperto e la riduzione dei tempi di invio-risposta fanno sì che l’interazione si percepisca come se fosse in praesentia e non più mediata dal computer. La prossimità comunicativa segna allora un intercambio in cui la lingua, spagnola in questo caso, presenta i tratti tipici del linguaggio colloquiale.
Ökonomisches Wachstum in Ostdeutschland seit der Wiedervereinigung - eine empirische Perspektive
Creators: name: Irrek, Maike
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2015
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 330

description: Der schleppende Konvergenzprozess zwischen Ost- und Westdeutschland und der fortdauernde Produktivitätsrückstand der ostdeutschen Wirtschaft sind die Motivation einer Vielzahl an Studien und Analysen. Öffentliches Sachkapital und Humankapital spielen dabei eine wichtige Rolle. Es liegen jedoch keine passenden Zeitreihen vor, mit deren Hilfe die in der Literatur diskutierten Thesen in empirischen Untersuchungen überprüft werden könnten. Daher werden in der vorliegenden Dissertation das öffentliche und private Sachkapital sowie das Humankapital für Ost-und Westdeutschland geschätzt. Erst mit diesen Daten sind zudem genauere Schätzungen der Totalen Faktorproduktivität in beiden Regionen möglich.
description: The sluggish convergence between East and West Germany and the persistent productivity deficit of the East Germany economy are the motivation of a large number of studies and analyses. Public physical capital and human capital play a major role therein. However, there are no appropriate time series to verify the hypotheses which are discussed in the literature in empirical studies. Therefore, in this thesis public and private physical capital as well as human capital will be estimated for East and West Germany. The newly constructed data are then used to derive more exact estimates of total factor productivity in both regions.
title: Defence of the Realm Act (DORA)
title: Defence of the Realm Act (DORA)
Creators: name: Hynes, Gregory
Publisher: name: BSB - Bavarian State Library
Year: 2017
Subjects: subject: Großbritannien
subject: Weltkrieg [1914-1918]
subject: Great Britain--Politics and government--1910-1936
subject: World War, 1914-1918--Great Britain

description: The Defence of the Realm Act (DORA) afforded the British government extraordinary emergency powers during the First World War. DORA’s remit was expansive, and grew in severity throughout the war, though public reaction was generally muted. DORA’s application in Ireland was harsher, where it was used to institute martial law.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
Timelike Dipole-Antenna Showers with Massive Fermions
Creators: name: Ridder, Aude Gehrmann-De
name: Ritzmann, Mathias
name: Skands, Peter
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a complete formalism for final-state (timelike) dipole-antenna showers including fermion masses, but neglecting polarization and finite-width effects. We make several comparisons of tree-level expansions of this shower algorithm to fixed-order matrix elements for hadronic Z decays, up to and including Z to 6 partons, to which the algorithm can be consistently matched over all of phase space. We also compare to analytical resummations at the NLL level. The shower algorithm has been implemented in the publicly available VINCIA plugin to the PYTHIA 8 event generator, which enables us to compare to experimental data at the fully hadronized level. We also include comparisons to selected observables in b-tagged Z decays.
description: 50 pages; v3: corrected typo in eq.(35)