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A firm's entrepreneurial orientation (EO) is its propensity to act proactively, innovate, take risks, and engage in competitive and autonomous behaviors. Prior research shows that EO is an im-portant factor for new ventures to overcome barriers to survival and fostering growth, measured by annual sales and employment growth rates. In particular, individual-level EO (IEO) is an important driver of a firm’s EO. The firm’s ability to exploit opportunities appearing in the mar-ket and to achieve superior performance depends on the employees’ skills and experiences to act and think entrepreneurially. The main objective of this dissertation is to investigate how and when employees engage in entrepreneurial behaviors at work. Building on three essays, this dissertation takes an interdisciplinary approach to employee entrepreneurial behaviors in new ventures, encompassing both entrepreneurship and gamification research. The first main contri-bution proposed in this field is a more nuanced understanding of how employee entrepreneurial behaviors help young firms cope with growth-related, organization-transforming challenges (i.e., changes in organizational culture that accompany growth, the introduction of hierarchical structures, and the formalization of processes). When new ventures grow, employees’ IEO tends to manifest in introducing technological innovations and business improvements rather than in actions related to risk-taking. Second, this dissertation reveals the relevance of self-efficacy for entrepreneurial behaviors and explores how gamification can enhance employee entrepreneurial behaviors in new ventures. Based on these findings, this dissertation contributes to EO research by highlighting the role of IEO as a building block for EO pervasiveness. This research further develops our knowledge on the use of gamification in new ventures. This cu-mulative dissertation is structured as follows. Part A is an introduction to the study of entrepre-neurial behaviors. Part B contains the three essays.
Wir beginnen mit einem performativen Paradigma einer tropologischen Exklusion, indem wir als ein wir die Frage in den Raum stellen, warum die prekären Substitute unseres Logos die Grenzen seiner Leistung bestimmen, obwohl sie weder wahr noch falsch, weder möglich noch unmöglich sind. Anders gefragt: Wie kann etwas ohne abgeschlossenen und abschließbaren Sinn, wie das Unbegriffliche im Sinne Hans Blumenbergs oder die den sprachlichen Spuren inhärente différance im Sinne Jaques Derridas, einen bedeutenden semantischen Einfluss auf das anthropologische Bedürfnis nach Gewissheit und geregelten Strukturen haben?
Daten – Räume – Datenräume
(2019)
Im Folgenden soll die kategorielle Ausdifferenzierung zwischen dem Spannungsverhältnis von Kartographie, Navigation und Technologie anhand zweier Klassifizierungsschemata, dem von Manuel Schramm und dem von Martin Dodge und Rob Kitchin beleuchtet werden und mit der Untersuchung von Pablo Abend ergänzt werden. Die Arbeiten sollen in ihrem bisherigen Forschungsstand aufgezeigt, kritisch überprüft und hier logisch erweitert werden.
Der Wald des Mittelalters
(2019)
‚Der Wald des Mittelalters‘ soll im Folgenden nicht allein als historisches Dokument beschäftigen – als kultureller Text im 11. bis 13. Jahrhundert, dessen Bedeutung von einem System symbolischer Formen (Ernst Cassirer) oder den Organisationsniveaus einer Semiosphäre (Jurij M. Lotman) bestimmt wird. Ergänzt um den Faktor des historischen Archivs steht darüber hinaus die Form seiner Erinnerung zur Diskussion, wodurch er vielmehr als historisches Monument erscheint (Michel Foucault), als Palimpsest, dessen verblasste Inschriften Zeugnis vom Wechsel historischer Vorschriften abgeben.
Der Einfühlungsbegriff ist während des Fin de siècle eng verknüpft mit der medizinischen Erforschung der Nerven- und Muskelempfindungen. Es erscheint daher konsequent, diese Verbindung von medizinischer Praxis und psychologisierender Ästhetik in der Architektur am Beispiel eines Sanatoriums der Jahrhundertwende nachzuvollziehen. Jener Beziehung von Ausdruck und Eindruck einer Wiener Raumkunst beziehungsweise der Relation von Bauwerk und dessen Benutzer soll im Folgenden am Beispiel des Sanatoriums Purkersdorf nachgegangen werden.
Zirkus und Raum
(2019)
Zirkusperformance ist Raumbewegung. Im Gegensatz zu literarischen oder filmischen Artefakten wird im Zirzensischen daher der Raum zur zentralen, der übrigen Narration hierarchisch übergeordneten Prämisse der narrativen Performanz, ja zur elementaren Ermöglichungsstruktur für die Modellierung eines sekundären semiotischen Systems, das nicht im Rahmen der Semiose nachträglich rekonstruiert, sondern im Moment des Aufführens performativ konstruiert wird. Der vorliegende Artikel fokussiert auf Basis dieser Funktionszusammenhänge des Zirzensischen genau diese Relation von Zirkus und Raum unter der Annahme einer Semiotik der Performanz nach Fischer-Lichte.
Queer Space?
(2019)
Es gehört inzwischen zu den Grundprämissen kulturwissenschaftlicher Raumtheorien, dass Raum als Konsequenz von und in Wechselwirkung mit sozialen Praktiken entsteht. Diese „Produktion des Raumes“ die erstmals einflussreich von Henri Lefebvre formuliert wurde, muss in Zusammenhang mit gesellschaftlichen Herrschaftsverhältnissen gesehen werden, wie unter anderen Pierre Bourdieu und Michel Foucault betont haben. Soziopolitische Machtstrukturen, seien sie patriarchaler oder kolonialistischer Art, schreiben sich in hegemonialer Form in den Raum ein und führen zur auch räumlich manifestierten Marginalisierung bestimmter Bevölkerungsgruppen. Diese beruht zumeist auf einer binären Zweiteilung in unter anderen schwarz-weiß, arm-reich, männlich-weiblich, heterosexuell-queer. Zugleich ist auch das Denken über Räumlichkeit, sowohl was materielle Räume als auch metaphorische Raumkonzepte betrifft, von der klassischen Binarität abendländischer Philosophie geprägt, was zu einer Vielzahl zweigeteilter Modelle geführt hat.
Gedächtnis-Semiosphären und Vergangenheitsbewältigung in der deutschsprachigen Literatur Belgiens
(2019)
Die semiotische Deutung von Raum sowie eine dynamisierte Auffassung des Grenzkonzepts lassen Lotmans Raumtheorie auch zur Deutung einiger deutschsprachiger belgischer Romane, die um die Jahrtausendwende veröffentlicht wurden, geeignet erscheinen. So sollen im Folgenden die Texte Wege aus Sümpfen. Roman einer Grenzlandschaft. Teil I: Eine Jugend auf dem Königshof (2001) und Wege aus Sümpfen. Roman einer Grenzlandschaft. Teil II: Brückenschläge (2006) von Léo Wintgens, Bosch in Belgien (2006) von Freddy Derwahl, sowie Unterwegs zu Melusine (2006) und Begegnung mit Melusine (2007) von Hannes Anderer einer näheren Betrachtung unter Anwendung der Lotmanschen Konzepte unterzogen werden.
Raum ist eine zentrale Kategorie bei der Erschaffung fiktionaler Welten. Wer erzählt, entwirft Räume und Raumverhältnisse, Orte und Schauplätze. Diese verweisen nicht selten auf die außerliterarische Wirklichkeit, manchmal, wie z.B. im Großstadtroman, sogar auf konkrete Straßen, Plätze oder Gebäude.
In den Gesellschafts- wie in den Kulturwissenschaften hat der Begriff des ‚Raums‘ in den letzten Jahren sehr viel Aufmerksamkeit erfahren. Zahlreiche Einzelstudien, Sammelbände und Handbücher loten den Bedeutungsumfang dieses Begriffs, aber auch die Schwierigkeiten aus, die sich einerseits aus der Vielfalt vorhandener Raumkonzepte und andererseits aus der Fülle ihrer keineswegs deckungsgleichen Anwendungsmöglichkeiten ergeben. Hinzu kommt die Schwierigkeit, den Begriff des Raums von verwandten Ausdrücken wie Platz und Ort, Umgebung und Territorium oder gar Welt abzugrenzen – ganz zu schweigen von den Verschiebungen, die zwischen verschiedenen Sprachen hinsichtlich der Auffassung von ‚Raum‘, ‚espace‘, ‚space‘ usw. bestehen.
Vor diesem Hintergrund erscheint es nicht nur zweckmäßig, sondern notwendig, im Rahmen einer transversalen Betrachtung nach strukturellen Ähnlichkeiten zwischen den Raumkonzepten unterschiedlicher Disziplinen Ausschau zu halten. Einen Versuch in dieser Richtung stellen die folgenden Überlegungen zu Querbezügen und Übergängen zwischen Raumsoziologie und Raumsemiotik dar.
Raum-Poetik
(2019)
In literarischen Texten lassen sich regelrechte „fictions of space“ identifizieren, in denen sich ‚Raum‘ als eine handlungskonstitutive Dimension erweist. Diese Form literarischer Raum-Fiktionen instrumentalisiert nicht nur topologische Raumentwürfe, sondern fokussiert auf Raumpraktiken und Raumsignifikationen bzw. problematisiert diese auf einer metafiktionalen Ebene. Von Interesse scheinen solche Raumentwürfe insbesondere in Texten zu sein, die ‚Raum‘ zu einem zentralen Element in der Entwicklung ihrer Figuren und zum Motor der Narration machen.
Raum und Grenze
(2019)
Raum und Grenze, und deren Verhältnis zu Individuen wie Kollektiven, stellen dabei zentrale Denkfiguren wie Operatoren der ‚Sinn‘generierung dar. Die folgenden Ausführungen versuchen aus semiotischer Sicht einen Überblick über die verschiedenen Bedeutungen, Artikulationsformen und Anwendungsbereiche dieser Parameter zu geben. Sie orientieren sich an der Skizze, wie sie in Krah 1999 dargelegt wurde, und ergänzen, modifizieren und neujustieren diese aus der Perspektive und dem Stand von 2018.
Damit sind Grenzen ein, wenn nicht gar der prominenteste Untersuchungsgegenstand der Kultursemiotik, also derjenigen Teildisziplin der Wissenschaft von den Zeichen, die kulturelle Prozesse in ihren zeichenhaften Veräußerungen beschreibt. Dementsprechend bezeichnen Gräf/Schmöller die Grenze selbst als eine „semiotische Größe“, da sie stets in kulturellen kommunikativen Kontexten verankert ist. Die Kultursemiotik untersucht anhand medial materialisierter Texte, in welcher Weise Kulturen in ihren kommunikativen Akten und zeichenhaften Handlungen Grenzen und Ordnungen konstruieren und rekonstruiert darüber die historischen und diskursiven Kontexte des Denkens und Wissens, in denen jene verortet sind.
Schriften zur Kultur- und Mediensemiotik | Online ist ein Open Access Journal des Virtuellen Zentrums für kultursemiotische Forschung / Virtual Centre for Cultural Semiotics (www.kultursemiotik.com) und wird herausgegeben von Martin Nies.
Inhalt der vierten Ausgabe der Schriften zur Kultur- und Mediensemiotik | Online
Martin Nies
Einleitung : Raumsemiotik - Zur Kodierung von Räumen und Grenzen
Martin Nies
B/Orders - Schwellen - Horizonte : Modelle der Beschreibung von Räumen und Grenzen in ästhetischer Kommunikation - Eine raumsemiotische Positionsbestimmung
Hans Krah
Raum und Grenze : eine semiotische Bestandsaufnahme – Mit dem Beispiel des Bunkers im ästhetischen Diskurs globaler Katastrophenszenarien
Stephanie Großmann & Stefan Halft
Raum-Poetik : Dimensionen raumsemiotischer Textanalyse am Beispiel von E.T.A. Hoffmanns Die Bergwerke zu Falun (1819)
Matthias Bauer
Sozialer und semiotischer Raum : Querbezüge, Übergänge und Grenzverschiebungen nebst einigen Anmerkungen zur kulturwissenschaftlichen Relevanz des Ähnlichkeitsdenkens
Damaris Nübel
Zur Funktion von Nicht-Orten und Heterotopien in Identitätsnarrativen der Kinder- und Jugendliteratur
Lesley Penné
Gedächtnis-Semiosphären und Vergangenheitsbewältigung in der deutschsprachigen Literatur Belgiens
Claudia Gremler
Queer Space? Der nicht-binäre Raum in der deutschen Gegenwartsliteratur am Beispiel Antje Rávic Strubels
Maren Conrad & Franziska Trapp
Zirkus und Raum : eine Semiotik der Performanz
Lisa Gaupp
Symbolische Räume kultureller Diversität : Verhandlungen, Grenzen und Überschreitungen in den performativen Künsten
Lil Helle Thomas
Architektonische Grenzgänge zwischen Raum und Wahrnehmung : das Sanatorium Purkersdorf
Christian Zolles
Der Wald des Mittelalters : Konstituierung eines alteritären Kulturraums im 11. bis 13. Jahrhundert
Hedwig Wagner
Daten – Räume – Datenräume : zum Verhältnis von Orten, digitalisierten Ortsinformationen und deren Speicher- und Nutzungsorten
Theodoros Konstantakopoulos
Inklusionen, Exklusionen, Implikationen : die semantischen Grenzbereiche der Teilhabe
Age and radial growth rate are key data on understanding some aspects of tropical forest dynamics and ecology. In species that produce annual tree rings, tree-ring analysis allows the most precise estimate of these two parameters. The present study assessed the age and radial growth rate of three Hymenaea species inhabiting four of the six biomes found in Brazil. Out of these four biomes, two harbor the largest rainforests in South America, the Amazon Forest on the west and the Atlantic Forest in the east. The Cerrado biome is an open and seasonally drier vegetation found between them and the Pantanal is a wetland in the west. The H. courbaril species inhabits almost the entire Neotropical lowlands while H. parvifolia and H. stigonocarpa are restricted to the Amazon and Cerrado biomes, respectively. To investigate these species dynamics within different biomes, age and radial growth rate were calculated for 217 trees through tree-ring analyses. The oldest H. courbaril and. H. parvifolia trees were 316 and 371 years old, respectively, while H. stigonocarpa trees were considerably younger, up to 144 years old. Hymenaea courbaril trees showed the widest variation in average growth rate, from 1.00 to 6.63 mm per year, while the other two species showed a narrower variation from 0.89 to 2.81 mm per year. The studied populations presented distinct trends in the lifetime growth pattern that seems to be related to the biome of provenance. Overall, trees from the Amazon forest showed a trend of increasing growth rate up to about 100 years followed by a decreasing of it, while trees growing in the Pantanal and Atlantic forest showed only decreasing growth rates. In the Cerrado, trees showed a constant pattern of growth rate up to 50 years followed by a clear decline. It is important to highlight that different species of Hymenaea showed similar growth trends within the same biome. In larger trees, the average growth rate is lower in the Cerrado, which is characterized by deeper water tables and more dystrophic soils while the growth rates in the Amazon and Atlantic Forests are 60% and 79% higher, respectively. This study represents one of the most comprehensive datasets of trees age and growth rate of tropical congeneric species under such large geographical range.
A tropical tree-ring study is presented using 36 specimens of Cariniana estrellensis from the Mata Atlantica Biome within the State of São Paulo: Caetetus and Carlos Botelho. We aimed to assess the suitability of this species for chronology building, as well as for dendroclimatological studies, with the help of its lifetime growth trajectories. Cariniana estrellensis forms visible tree rings with a dense sequence of parenchyma bands at the end of the latewood, followed by a relatively distant sequence of parenchyma bands in the subsequent early wood of a tree ring. However, it was impossible to establish a chronology, solely by tree-ring width measurements and crossdating, for a number of reasons, including sequences of problematic wood anatomy, abundance of wedging rings and probably missing rings. Therefore, building a robust chronology for this species requires a multi-parameter approach, however, no experience is currently available. Therefore, to reveal possible climate-growth relationships for Cariniana estrellensis at both sites, we tested to correlation analyses of microclimatic conditions with tree growth and investigated patterns of lifetime growth trajectories. Annual precipitation is over 1300 mm at both sites, with the dry season primarily between June and August. Both sites showed clear differences in their microclimatic regime and topography. Overall, light availability is the most likely crucial factor for the studied species. A significantly lower photosynthetic active radiation and daily photoperiod was found at Carlos Botelho by the strong influence of orographic rainfall, foggy conditions and shade caused by the adjacent mountain chain. Consequently, trees at this site generally showed a lower average annual growth rate as compared to the Caetetus site with differences between juvenile and mature growth phases remaining nearly constant throughout their lives. In contrast, trees from Caetetus had less consistent growth phases, with increased growth after the juvenile growth phase. Thus, it can be concluded that dendroclimatological studies using growth characteristics have the potential to clarify the generally complex stand dynamics of Cariniana estrellensis. However, the development of tree-ring chronologies, based on tree-ring width analyses of cores or discs is nearly impossible.
Deforestation in tropical regions is raising fragmentation to alarming levels. Not only does it lead to losses of forest area, but also the abiotic and biotic changes on forest edge areas alter the development of the remaining trees. We aimed to assess the impacts of forest fragmentation on the growth of tropical emergent trees. We sampled the endangered species Aspidosperma polyneuron (Apocynaceae) at forest edge and interior in the highly fragmented Brazilian Atlantic Forest. We obtained increment cores of each tree along with data about tree and surrounding canopy heights, plus their current levels of liana infestation. We used tree-ring analyses to estimate age and growth rate of trees. Sampled trees and surrounding canopy were taller at the forest interior than at the edge, even though both sampled populations have similar ages. Overall, trees at forest interior show a lifetime growth pattern common to shade-tolerant species, with a peak of growth rate at 120 years. Indeed, all sampled trees exhibited this pattern before fragmentation. However, trees at forest edge presented constantly slow growth rates for all diameter classes after the fragmentation event. The strong presence of lianas at forest edge prevents trees from experiencing the expected growth releases throughout their lifetime, probably by keeping the leaves of A. polyneuron under shaded conditions. Therefore, the management of lianas at the forest edge is likely the most effective procedure to ensure the growth of emergent trees, guarantying their role on forests structure, carbon storage, and ecosystem functioning.
In three essays, this dissertation examines the past, present and future of branding in an international context, contributing to the research area of global/local brands, while also offering managers valuable insights for their branding strategies.
The first essay provides scholars and practitioners a detailed state of the art of global/local brand research and proposes promising angles for future research, especially considering major
challenges for our societies.
The second essay incorporates the segment of cosmopolitan consumers into perceived brand globalness/localness research. Theoretically grounded in the concepts of social identity theory and complexity, the essay builds on perceived brand globalness/localness to analyze how cosmopolitans arrange both their global and local orientations. Aside offering scholars a new theoretical lens regarding consumer cosmopolitanism, managers can benefit from the gained insights, if cosmopolitans are a particular target group in their business strategy.
The third and final essay meta-analytically investigates how the variables perceived brand globalness and localness materialize on various key outcome variables. At heart of this essay is a comparison of both perceived brand globalness and localness, offering scholars and practitioners valuable empirical insights on similarities and differences between their effects on outcomes such as brand quality.
The identification and estimation of trends in hydroclimatic time series remains an important task in applied climate research. The statistical challenge arises from the inherent nonlinearity, complex dependence structure, heterogeneity and resulting non-standard distributions of the underlying time series. Quantile regressions are considered an important modeling technique for such analyses because of their rich interpretation and their broad insensitivity to extreme distributions. This paper provides an asymptotic justification of quantile trend regression in terms of unknown heterogeneity and dependence structure and the corresponding interpretation. An empirical application sheds light on the relevance of quantile regression modeling for analyzing monthly Central England temperature anomalies and illustrates their various heterogenous trends. Our results suggest the presence of heterogeneities across the considered seasonal cycle and an increase in the relative frequency of observing unusually high temperatures.
Die deutsche Handelsgerichtsbarkeit zeichnet sich bis heute durch die Mitwirkung sachkundiger Laienrichter aus. Die Arbeit zeigt zunächst ausführlich die historischen Wurzeln und die Entwicklung der Handelsrichter in Italien, in Frankreich und in den deutschen Rechtskreisen. Dabei wird insbesondere auf die Entstehungsgeschichte des sog. deutschen Systems eingegangen. Im Anschluss analysiert der Verfasser die Wesensmerkmale der modernen KfH. In einem dritten Schritt werden die historischen Erkenntnisse als Lösungsansätze für aktuelle Reformbemühungen um die Zukunft der KfH nutzbar gemacht.
Trotz digitaler Vermittlung und körperlicher Distanz kommt es während Videokonferenzen zur Wahrnehmung von Nähe oder gemeinsamen Atmosphären. Solche Interaktionen können mit einer erweiterten neophänomenologischen Soziologie nach Hermann Schmitz theoretisch hergeleitet und empirisch untersucht werden. Ein Grounded-Theory-Zugriff mit Interviews als zentralem Erhebungsverfahren erlaubt die Analyse von Möglichkeiten und Grenzen dieses Beieinanderseins an physisch getrennten Orten. Die Videokonferenz zeigt, dass bei digitaler Kommunikation nicht allein die Technik Interaktionen ermöglicht, sondern erst die leidenschaftliche Konstruktionsarbeit der Teilnehmenden einen „Leiberspace“ schaffen kann, um sich digital vermittelt näherzukommen.
Prior to the emergence of Big Data and technologies such as Learning Analytics (LA), classroom research focused mainly on measuring learning outcomes of a small sample through tests. Research on online environments shows that learners’ engagement is a critical precondition for successful learning and lack of engagement is associated with failure and dropout. LA helps instructors to track, measure and visualize students’ online behavior and use such digital traces to improve instruction and provide individualized support, i.e., feedback. This paper examines 1) metrics or indicators of learners’ engagement as extracted and displayed by LA, 2) their relationship with academic achievement and performance, and 3) some freely available LA tools for instructors and their usability. The paper concludes with making recommendations for practice and further research by considering challenges associated with using LA in classrooms.
Germany is considered a role model for dealing with past mass atrocities. In particular, the social reappraisal of the Holocaust is emblematic of this. However, when considering the genocide on the Herero and Nama in present-day Namibia, it is puzzling that an official recognition was only pronounced after almost 120 years, in May 2021. For a long time, silence surrounded this colonial cruelty in German political discourse. Although the discourse on German responsibility toward Namibia emerged after the end of World War II, it initially appeared detached from the genocide. That silence on colonial atrocities is to be considered a cruelty itself. Studies on silence have been expanding and becoming richer. Building on these works, the paper sets two goals: First, it advances the theorization of silence by producing a new typology, which is then integrated into discourse-bound identity theory. Second, it applies this theory to the analysis of the silencing and later acknowledging of the genocide on the Herero and Nama by German political elites. To this end, Bundestag debates, official documents, and statements by relevant political actors are analyzed in the period from 1980 to 2021. The results reveal the dynamics between hegemonic and counter-hegemonic discursive formations, how those are shifting in a period of 40 years, and what role silence plays in it. Beyond our emphasis on the genocide on the Herero and Nama, our findings might benefit future studies as the approach proposed in this paper can make silence a tangible research object for global studies.
Binging Family
(2021)
In diesem Open-Access-Buch zeigt Jakob Kelsch, wie sich in der US-amerikanischen TV-Serie der 1950er und 1960er Jahre der Mythos der patriarchal-strukturierten Kernfamilie als Ideal des familiären Zusammenlebens herausbildete. Trotz Phasen der Dekonstruktion und der zunehmenden Repräsentation problematischer und ethnisch wie sozial diverser Familienverhältnisse erweist sich dieser Mythos bis heute als äußerst persistent. Der durch den Digitalisierungsprozess bedingte Aufstieg der Streamingdienste und der Siegeszug deren serieller Erzeugnisse brachte eine inhaltliche Diversifizierung des Genres Familienserie und eine zunehmende narrative Komplexität mit sich. Doch auch diese kann nur an der Oberfläche des tief im kulturellen Wissen verankerten Mythos der heteronormativen Kernfamilie rütteln.
Hispanos en el mundo
(2021)
Este volumen examina la hasta hoy poco tratada imbricación entre la emoción y el desplazamiento de los hispanos por el mundo en función de los contextos socio-políticos y los momentos vitales de los concernidos. Reúne aportaciones en español y en inglés de un variado espectro de disciplinas –desde los estudios literarios, culturales y de género, hasta la antropología y la sociología– que analizan esta imbricación, sus funciones y modalidades en base a un entendimiento amplio del concepto de emotive de William Reddy. Así, este libro recoge una gran gama de medios –como la literatura, el cine, las páginas web, los vlogs y las entrevistas– en los que los hispanos expresan sus emociones respecto a sus viajes o experiencias migratorias, pero también a los efectos a largo plazo de desplazamientos históricos en sujetos que se sienten desplazados o fuera de lugar en el presente. De este modo, Hispanos en el mundo aborda un tema de gran actualidad y relevancia y, además, cubre un vacío investigativo, no solo en los estudios de la migración –con la excepción de algunos trabajos que suelen centrarse en el ámbito de lo familiar y de los cuidados–, sino también en el hispanismo, donde se erige como estudio pionero.
The described secondary data provide a comprehensive basis for modeling conditional mean nitrogen dioxide (NO2) concentration levels across Germany. Besides concentration levels, meta data on monitoring sites from the German air quality monitoring network, geocoordinates, altitudes, and data on land use and road lengths for different types of roads are provided. The data are based on a grid of resolution 1 × 1 km, which is also included. The underlying raw data are open access and were retrieved from different sources. The statistical software R was used for (pre-)processing the data and all codes are provided in an online repository. The data were employed for modeling mean annual NO2 concentration levels in the paper "Agglomeration and infrastructure effects in land use regression models for air pollution - Specification, estimation, and interpretations" by Fritsch and Behm (2021).
Durch die Verfassungsänderung zum Zwecke des Ausschlusses verfassungsfeindlicher Parteien aus der staatlichen Parteienfinanzierung wurde ein neues Mittel der wehrhaften Demokratie geschaffen. Das Prinzip erlaubt es dem Staat in engen Grenzen, gegen Parteien vorzugehen, die erklärtermaßen Gegner der freiheitlichen demokratischen Grundordnung sind. Die dem Ausschluss immanente Ungleichbehandlung gegenüber anderen Parteien sorgt allerdings für eine nicht unerhebliche Verzerrung des politischen Wettbewerbs, was Fragen zu seiner Vereinbarkeit mit dem Grundgesetz, insbesondere Art. 79 Abs. 3 GG, aufwirft. Diese Fragen und die Folgen des Ausschlusses aus der staatlichen Parteienfinanzierung für die betroffene Partei sind Gegenstand dieser Arbeit.
Gegenstand der wissenschaftlichen Abhandlung ist zunächst die verfassungsrechtliche Zulässigkeit der Bindungswirkung gemäß § 613 Abs. 1 S. 1 ZPO, insbesondere im Hinblick auf das rechtliche Gehör der angemeldeten Verbraucher. Unter diesem Blickwinkel wird im Fortgang die Anwendbarkeit der prozessualen Institute der Klageänderung und der Widerklage im Musterfeststellungsprozess untersucht, welche nach Auffassung des Verfassers einer sehr restriktiven Anwendung im Prozess der qualifizierten Einrichtung bedürfen. Zuletzt wird die praktisch höchst brisante Frage der Haftung der qualifizierten Einrichtung für eine unzureichende Prozessführung im Musterfeststellungsprozess thematisiert, die vom Gesetzgeber nur stiefmütterlich behandelt wurde. Die Arbeit wurde mit dem Promotionspreis der Rechtsanwaltskammer München und mit dem Promotionspreis der Freunde und Förderer der Rechtswissenschaft an der Universität Passau ausgezeichnet.
The autonomic composition of Virtual Networks (VNs) and Service Function Chains (SFCs)based on application requirements is significant for complex environments. In this paper, we use graph transformation in order to compose an Extended Virtual Network (EVN) that is based on
different requirements, such as locations, low latency, redundancy, and security functions. The EVN can represent physical environment devices and virtual application and network functions. We build
a generic Virtual Network Embedding (VNE) framework for transforming an Application Request (AR) to an EVN. Subsequently, we define a set of transformations that reflect preliminary topological, performance, reliability, and security policies. These transformations update the entities and demands of the VN and add SFCs that include the required Virtual Network Functions (VNFs). Additionally, we propose a greedy proactive heuristic for path-independent embedding of the composed SFCs. This heuristic is appropriate for real complex environments, such as industrial networks. Furthermore, we present an Industrail Internet of Things (IIoT) use case that was inspired by Industry 4.0 concepts,in which EVNs for remote asset management are deployed over three levels; manufacturing halls and edge and cloud computing. We also implement the developed methods in Alevin and show exemplary mapping results from our use case. Finally, we evaluate the chain embedding heuristic while using a random topology that is typical for such a use case, and show that it can improve the admission ratio and resource utilization with minimal overhead.
Das Werk widmet sich der Arbeit in der Industrie 4.0, einer Entwicklung, bei der alle realen Prozesse in der Fabrik digital erfassen und so noch stärker automatisiert werden sollen. Für die Beschäftigten bringt dies Chancen, es droht aber auch Dequalifizierung und umfassende Überwachung.
Im Arbeitsrecht werden deswegen die rechtliche Bindungskraft der menschengerechten Gestaltung der Arbeit und die Mensch-Maschine-Kollaboration untersucht. Im Datenschutz steht die Frage im Mittelpunkt, inwiefern die effiziente Organisation der Arbeit eine intensive Datenverarbeitung rechtfertigt. Dazu wird in Abgrenzung beider Rechtsgebiete ein neuer Lösungsansatz vorgestellt, abgeleitet aus dem Zusammenspiel deutscher und europäischer Grundrechte.
Earlier research showed that religion is related to participation
among adolescents. It emphasized the effects of belonging (affiliation to groups and traditions) on community service among Western populations. This article takes one step further and focuses on religiosity as a potential motivation for community problem solving during adolescence and young adulthood, in the Eastern European Orthodox cultural setting. Data comes from several semistructured interviews with participants in a civic project conducted in the city of Timisoara (Romania). Findings indicated a low impact of the social religious component on engagement. The cognitive dimension of belief and the emotional bonding (prayer, ritual connection to the higher reality) function as indirect motivators, through the moral element of behavior. Results also showed a privatization of spiritual life at young adults (the invisible religion): estrangement from doctrines and the development of an individualistic type of morality, meant to drive volunteer activities further.
Southeast Asia is one of the most dynamic regions in the world. This volume offers a timely approach to Southeast Asian Studies, covering recent transitions in the realms of urbanism, rural development, politics, and media. While most of the contributions deal with the era of post-independence, some tackle the colonial period and the resulting developments. The volume also includes insights from Southern India.
As a tribute to the interdisciplinary project of Southeast Asian Studies, this book brings together authors from disciplines as diverse as area studies, sociology, history, geography, and journalism.
The power demand (kW) and energy consumption (kWh) of data centers were augmenteddrastically due to the increased communication and computation needs of IT services. Leveragingdemand and energy management within data centers is a necessity. Thanks to the automated ICTinfrastructure empowered by the IoT technology, such types of management are becoming more feasiblethan ever. In this paper, we look at management from two different perspectives: (1) minimization of theoverall energy consumption and (2) reduction of peak power demand during demand-response periods.Both perspectives have a positive impact on total cost of ownership for data centers. We exhaustivelyreviewed the potential mechanisms in data centers that provided flexibilities together with flexiblecontracts such as green service level and supply-demand agreements. We extended state-of-the-artby introducing the methodological building blocks and foundations of management systems for theabove mentioned two perspectives. We validated our results by conducting experiments on a lab-gradescale cloud computing data center at the premises of HPE in Milano. The obtained results support thetheoretical model, by highlighting the excellent potential of flexible service level agreements in Green IT:33% of overall energy savings and 50% of power demand reduction during demand-response periods inthe case of data center federation.
La inclusión es un tema de gran actualidad en muchos ámbitos de la vida contemporánea. Son muy amplios los sectores en los que se viene observando un considerable aumento de la sensibilidad social acerca de las circunstancias y condiciones en que se produce. El presente libro tiene dos intereses centrales: analizar la relación entre personas con y sin diversidad funcional en los textos culturales a través de los tres términos clave inclusión, integración, diferenciación; y estudiar en los textos concretos cómo se tratan o incluso se practican la inclusión, la integración y la diferenciación. El campo de estudio se orienta hacia el corpus de los textos literarios, teatrales y audiovisuales.
¿Discapacidad?
(2021)
La diversidad funcional, entendida como una afección corporal, cognitiva o psíquica, a menudo altera gravemente la participación de las personas en la vida colectiva. En ocasiones, la diversidad funcional también puede venir acompañada de una estigmatización social muy marcada. El presente volumen ofrece una de las primeras aproximaciones a la representación de la diversidad funcional en el ámbito hispánico. Los trabajos que se incluyen en este libro se encargan de mostrar los posibles acercamientos teóricos y prácticos a la representación de la diversidad funcional, a través de un variado corpus integrado por obras literarias, escénicas, cinematográficas y audiovisuales, extraídas de la creación hispánica contemporánea.
Functional diversity, understood as a bodily, cognitive or psychic affection, often seriously disrupts the participation of people in collective life. At times, functional diversity can also be accompanied by a strong social stigma. This volume offers one of the first approaches to the representation of functional diversity in the Hispanic sphere. The works included in this book are in charge of showing the possible theoretical and practical approaches to the representation of functional diversity, through a varied corpus composed of literary, scenic, cinematographic and audiovisual works, extracted from the contemporary Hispanic creation.
Natural Language Processing has an important role in Artificial Intelligence for easing human-machine interaction. Processing human language, though, poses many challenges, among which is the semantics-related phenomenon known as language variability, the fact that the same thing can be said in several ways. NLP applications' inputs and outputs can be expressed in different forms, whose equivalence can be verified through inference. The textual entailment paradigm was established to enable the creation of a unifying framework for applied inference, providing a means of delivering other NLP task from handling inference issues in an ad-hoc manner, using instead the outputs of an inference-dedicated mechanism.
Text entailment, the task of determining whether a piece of text logically follows from another piece of text, involves different scenarios, which can range from a simple syntactic variation to more complex semantic relationships between sentences. However, most approaches try a one-size-fits-all solution that usually favors some scenario to the detriment of another. The commonsense world knowledge necessary to support more complex inferences is also usually employed in a limited way, with most approaches sticking to shallow semantic information, leaving more elaborate semantic relationships aside. Furthermore, most systems still work as a "black box", providing a yes/no answer that does not explain the underlying reasoning process.
This thesis aims at addressing these issues by proposing a composite interpretable approach for recognizing text entailment where the entailment pair is analyzed so the most relevant phenomenon is detected and the suitable method can be used to solve it. Syntactic variations are dealt with through the analysis of the sentences' syntactic structures, and semantic relationships are detected with the aid of a knowledge graph built from natural language dictionary definitions. Also, if a semantic matching is involved, the answer is made interpretable through the generation of natural language justifications that explain the semantic relationship between the pieces of text. The result is the XTE - Explainable Text Entailment - a system that outperforms well-established tools based on single-technique entailment algorithms, and that also gives an important step towards Explainable AI, allowing the inference model interpretation, making the semantic reasoning process explicit and understandable.
Programming is a key skill in a world where businesses are driven by digital transformations. Although many of the programming demand can be addressed by a simple set of instructions composing libraries and services available in the web, non-technical professionals, such as domain experts and analysts, are still unable to construct their own programs due to the intrinsic complexity of coding. Among other types of end-user development, natural language programming has emerged to allow users to program without the formalism of traditional programming languages, where a tailored semantic parser can translate a natural language utterance to a formal command representation able to be processed by a computational machine. Currently, semantic parsers are typically built on the top of a learning method that defines its behaviours based on the patterns behind a large training data, whose production frequently are costly and time-consuming. Our research is devoted to study and propose a semantic parser for natural language commands targeting a scenario with low availability of training data. Our proposed semantic parser follows a multi-component architecture, composed of a specialised shallow parser that associates natural language commands to predicate-argument structures, integrated to a distributional ranking model that matches the command to a function signature available from an API knowledge base. Systems developed with statistical learning models and complex linguistics resources, as the proposed semantic parser, do not provide natively an easy way to associate a single feature from the input data to the impact in system behaviour. In this scenario, end-user explanations for intelligent systems has become a strong requirement to increase user confidence and system literacy. Thus, our research designed an explanation model for the proposed semantic parser that fits the heterogeneity of its multi-component architecture. The explanation model explores a hierarchical representation in an increasing degree of technical depth, providing higher-level explanations in the initial layers, going gradually to those that demand technical knowledge, applying different explanation strategies to better express the approach behind each component. With the support of a user-centred experiment, we compared the utility of different types of explanations and the impact of background knowledge in their preferences.
In this thesis we consider real analytic functions, i.e. functions which can be described locally as convergent power series and ask the following: Which real analytic functions definable in R_{an,exp} have a holomorphic extension which is again definable in R_{an,exp}? Finding a holomorphic extension is of course not difficult simply by power series expansion. The difficulty is to construct it in a definably way.
We will not answer the question above completely, but introduce a large non trivial class of definable functions in R_{an,exp} where for example functions which are iterated compositions from either side of globally subanalytic functions and the global logarithm are contained. We call them restricted log-exp-analytic. After giving some preliminary results like preparation theorems and Tamm's Theorem for this class of functions we are able to show that real analytic restricted log-exp-analytic functions have a holomorphic extension which is again restricted log-exp-analytic.
Die gesetzlichen Formen bilden einen praxisrelevanten Teilbereich der Rechtswissenschaft, über den in der Vergangenheit wenig diskutiert wurde. Die Einführung der Textform und der elektronischen Form im Jahr 2001 und die Verabschiedung des DiRUG verdeutlichen, dass die Digitalisierung auch vor den Formen des deutschen Rechtssystems keinen Halt macht.
In dieser Dissertation wird die Entwicklung der Formen im Zuge der Digitalisierung aufgearbeitet. Dafür werden die papiergebundenen Formen und die digitalen Formen nach demselben Schema und unter denselben inhaltlichen Gesichtspunkten untersucht und chronologisch dargestellt. Hierdurch werden die Gemeinsamkeiten und Unterschiede systematisch herausgearbeitet. Besonderer Fokus liegt dabei auf den Formwirkungen sowie der Wirkungsäquivalenz von digitalen Formen und ihrem jeweiligen papiergebundenen Pendant. Zudem werden die digitalen notariellen Formen im Sinne des DiRUG in das altbekannte System der gesetzlichen Formen eingeordnet.
Nach den Untersuchungen ist festzuhalten, dass die elektronische Form mittlerweile hinreichend wirkungsäquivalent im Vergleich zur Schriftform ist, auch hinsichtlich der Warnwirkung, die vom deutschen Gesetzgeber bisher noch anders beurteilt wird. Die digitale öffentliche Beglaubigung und die digitale notarielle Beurkundung im Sinne des DiRUG sind ebenfalls hinreichend gleichwertig im Vergleich zu ihrem jeweiligen papiergebundenen Äquivalent. Aus dem Grund wird sich in dieser Dissertation dafür ausgesprochen, den Anwendungsbereich der digitalen Formen entsprechend ihrer Wirkungsäquivalenz in Zukunft zu erweitern.
Insgesamt ist die Digitalisierung der gesetzlichen Formen begrüßenswert und ein Schritt in die richtige Richtung.
Noise in schools is considered a massive stress factor for teachers because of various reasons and can therefore lead to performance deficits in the job, but also to physical and psychological impairments. Consequently, research on school noise and its effects is essential. The three studies presented in this paper examined the immediate effects of noise on student teachers and the collateral effects on practicing teachers.
In the first and second study, two experiments were conducted to examine the effects of noise during breaks on stress experience, performance in a concentration test, and error correction of a dictation. Based on the transactional stress model (Lazarus & Folkman, 1984), it was hypothesized that noise leads to an increase in stress experience. According to the maximal adaptability theory (Hancock & Warm, 1989, 2003), noise should initially cause optimal performance, but in the long run should cause performance impairment. For this purpose, in the first study 74 and in the second study 104 student teachers of the University of Passau worked on two different concentration tests and corrected a student’s dictation while listening to short, continuous, or no noise. In both experiments, continuous noise led to an increase in the experience of stress. Neither short nor continuous noise led to a deterioration in concentration performance. Further, different findings emerged: In the first experiment, a short concentration test in combination with continuous noise led to positive effects in dictation correction, i.e., subjects showed better performance in error correction. In the second experiment, a long concentration test combined with short or continuous noise resulted in negative effects, i.e., subjects made more errors in the subsequent correction of dictation. It can be concluded that school noise can, on the one hand, increase the experience of stress and, on the other hand, promote or limit teachers’ subsequent performance. The latest, however, seems to depend on the specific situation of the individual.
In the first part of the third study, the focus was on teachers’ coping styles and experienced stress. Since coping styles have been shown to have a major impact on mental health, it was reasonable to assume that the stress experience caused by noise would vary depending on the coping style. Based on the stress-strain model (Rudow, 2000) and the transactional stress model (Lazarus & Folkman, 1984), it was hypothesized that teachers with risky coping styles experience more stress symptoms. Therefore, an online study was conducted to investigate whether there were differences in psychological and physical symptoms between teachers with different coping styles. For this purpose, 99 Bavarian elementary and middle school teachers were surveyed. Four professional coping styles resulted from the overarching scales of professional commitment and resilience. The healthy type (high commitment, high resilience), the unambitious type (low commitment, high resilience), type A (high commitment, low resilience), and type burnout (low commitment, low resilience) differed in terms of threat appraisal, noise stress, voice and hearing problems, and noise-related burnout. Compared to the healthy type, the risk types − type A and type burnout − exhibited higher stress experience and were generally more susceptible to school noise than the healthy type. This is the first study to show that school noise is particularly hazardous for teachers with risky coping styles.
The second part of the third study focused on the impact pathways of school noise. Associations between teachers’ individual characteristics and the consequences of school noise were hypothesized. Based on the simplified model of teacher stress (van Dick & Wagner, 2001), we examined 159 Bavarian elementary and middle school teachers to determine whether noise stress and vocal fatigue mediate the association between noise sensitivity and noise-related burnout. Results indicated that noise stress mediated the relationship between noise sensitivity and vocal fatigue; vocal fatigue mediated the relationship between noise stress and noise-related burnout; noise stress and vocal fatigue serially mediated the relationship between noise sensitivity and noise-related burnout. This is the first study to show links between noise-sensitive teachers and noise stress, voice problems, and noise-related burnout.
Die Digitalisierung des Geldes durch die Einführung des elektronischen Zahlungsverkehrs in diesem Jahrhundert bildet die Grundlage des heutigen unkörperlichen Geldverkehrs. Das Aufkommen neuer rein digitaler Zahlungsarten wie Kryptowährungen setzen diesen Trend der Entmaterialisierung des Geldverkehrs fort.
Insofern ist auch das Recht der Zwangsvollstreckung der Frage ausgesetzt, inwieweit die Vollstreckung in solche Werte zur Befriedigung des Gläubigers möglich ist. Dieser Frage geht die vorliegende Dissertation auf Basis des deutschen Vollstreckungsrecht am Beispiel der Kryptowährung Bitcoins nach.
Network virtualization provides high flexibility for deploying communication services in dense and heterogeneous environments. Two main approaches (dimensions) that are usually combined exist: Network Function Virtualization (NFV) technologies for functionality virtualization and Virtual Network Embedding (VNE) algorithms for resource virtualization. These approaches can be applied to different network levels, such as factory and enterprise levels of industrial networks. Several objectives and constraints, that might be conflicting, shall be considered when network virtualization is applied, mainly in complex topologies. This thesis proposes a network virtualization model that considers both virtualization dimensions, two network levels, and different objectives and constraints. The network levels considered are two primary levels in industrial networks. However, this consideration does not restrict the model to a particular environment or certain levels. The considered objectivities/constraints are topology, reliability, security, performance, and resource usage.
Based on this model, we first build an overall combined solution for autonomic and composite virtual networking. This solution considers both virtualization dimensions, two network levels, and target objectives. Furthermore, this solution combines three novel virtualization sub-approaches that consider performance, reliability, and performance. However, the sub-approaches apply to different combinations of levels and dimensions, and the reliability approach additionally considers the resource usage objective. After presenting all solutions, we map them to the defined model.
Regarding applicability to industrial networks, the combined approach is applied to an enterprise-level Industrial Internet of Things (IIoT) use case inspired by the smart factory concept in Industry 4.0. However, the sub-approaches are applied to more specific use cases. The performance and reliability solutions are integrated with relevant components of the Time Sensitive Networks (TSN) standard as a modern technology for industrial networks. The goal is to enrich the reliability and performance capabilities of TSN with the flexibility of network virtualization.
In the combined approach, we compose and embed an environment-aware Extended Virtual Network (EVN) that represents the physical devices, virtual application functions, and required Service Function Chains (SFCs). We use the graph transformation method to transform abstract application requirements (represented by an Application Request (AR)) into an EVN. Both EVN composition and embedding methods consider the Substrate Network (SN) topology and different security, reliability, performance, and resource usage policies. These policies are applied with a certain priority and depend on the properties of communicating entities such as location and type. The EVN is embedded using property-based node mapping, reliability-aware branching, and a greedy chain embedding heuristic. The chain embedding heuristic is evaluated using a random topology that represents the use case.
The performance sub-approach is NFV-based and is applied to a specific use case with Time-critical Traffic (TCT) flows. We develop and evaluate a complete framework for virtualizing Time-aware Shaper (TAS) using high-performance NFV. The reliability sub-approach is VNE-based and is applied to a specific factory level use case. We develop minimal and maximal branching heuristics based on a reliability-aware k-shortest path algorithm and compare them using a typical factory topology. We then integrate these algorithms with a Frame Replication and Elimination for Reliability (FRER) simulator to realize reliability policies by the autonomic and efficient configuration of a supporting technology.
The security sub-approaches are related to both virtualization dimensions and are applied to generic enterprise-level use cases. However, the applicability of the security aspect to industrial networks is only shown in the combined (EVN) approach and its use case. We research the autonomic security management in Network Function Virtualization Infrastructure (NFVI) with the main goal of early reaction to threats through SFC reconfiguration through Virtual Network Function (VNF) live migration. This goal is approached by supporting the security measurements with a decision making architecture that considers, on the one hand, the threats and events in the environment and, on the other hand, the Service Level Agreement (SLA) between the NFVI provider and user. For this purpose, we classify the VNF-specific attacks and define possible early detectable behavior patterns. Finally, we develop a security-aware VNE heuristic that considers the security requirements of the Virtual Network (VN) and the security capabilities of the SN. This approach is modified in the combined approach to consider deploying virtualized security VNFs.
Due to the advances of digitalization, firms are able to collect more and more personal consumer data and strive to do so. Moreover, many firms nowadays have a data sharing cooperation with other firms, so consumer data is shared with third parties. Accordingly, consumers are confronted regularly with the decision whether to disclose personal data to such a data sharing cooperation (DSC). Despite privacy research has become highly important, peculiarities of such disclosure settings with a DSC between firms have been neglected until now. To address this gap is the first research objective in this thesis. Another underexplored aspect in privacy research is the impact of low-cognitive-effort decision-making. This is because the privacy calculus, the most dominant theory in privacy research, assumes for consumers a purely cognitive effortful and deliberative disclosure decision-making process. Therefore, to expand this perspective and examine the impact of low-cognitive-effort decision-making is the second research objective in this thesis. Additionally, with the third research objective, this thesis strives to unify and increase the understanding of perceived privacy risks and privacy concerns which are the two major antecedents that reduce consumers’ disclosure willingness.
To this end, five studies are conducted: i) essay 1 examines and compares consumers’ privacy risk perception in a DSC disclosure setting with disclosure settings that include no DSC, ii) essay 2 examines whether in a DSC disclosure setting consumers rely more strongly on low-cognitive-effort processing for their disclosure decision, iii) essay 3 explores different consumer groups that vary in their perception of how a DSC affects their privacy risks, iv) essay 4 refines the understanding of privacy concerns and privacy risks and examines via meta-analysis the varying effect sizes of privacy concerns and privacy risks on privacy behavior depending on the applied measurement approach, v) essay 5 examines via autobiographical recall the effects of consumers’ feelings and arousal on disclosure willingness.
Overall, this thesis shines light on consumers’ personal data disclosure decision-making: essay 1 shows that the perceived risk associated with a disclosure in a DSC setting is not necessarily higher than to an identical firm without DSC. Also, essay 3 indicates that only for the smallest share of consumers a DSC has a negative impact on their disclosure willingness and that one third of consumers do not intensively think about consequences for their privacy risks arising through a DSC. Additionally, essay 2 shows that a stronger reliance on low-cognitive-effort processing is prevalent in DSC disclosure settings. Moreover, essay 5 displays that even unrelated feelings of consumers can impact their disclosure willingness, but the effect direction also depends on consumers’ arousal level.
This thesis contributes in three ways to theory: i) it shines light on peculiarities of DSC disclosure settings, ii) it suggests mechanisms and results of low-effort processing, and iii) it enhances the understanding of perceived privacy risks and privacy concerns as well as their resulting effect sizes.
Besides theoretical contributions, this thesis offers practical implications as well: it allows firms to adjust the disclosure setting and the communication with their consumers in a way that makes them more successful in data collection. It also shows that firms do not need to be too anxious about a reduced disclosure willingness due to being part of a DSC. However, it also helps consumers themselves by showing in which circumstances they are most vulnerable to disclose personal data. That consumers become conscious of situations in which they are especially vulnerable to disclose data could serve as a countermeasure: this could prevent that consumers disclose too much data and regret it afterwards. Similarly, this thesis serves as a thought-provoking input for regulators as it emphasizes the importance of low-cognitive-effort processing for consumers’ decision-making, thus regulators may be able to consider this in the future.
In sum, this thesis expands knowledge on how consumers decide whether to disclose personal data, especially in DSC settings and regarding low-cognitive-effort processing. It offers a more unified understanding for antecedents of disclosure willingness as well as for consumers’ disclosure decision-making processes. This thesis opens up new research avenues and serves as groundwork, in particular for more research on data disclosures in DSC settings.
This collection of three chapters responds to today’s energy challenges. It explores innovative policy aimed to equip the energy poor with access to improved cooking energy and electricity, looking both at the demand and supply side of modern energy technologies. Concretely, it discusses mechanisms to increase uptake of off-grid solar electricity in rural Rwanda based on experimental demand measurements (Chapter 1), it studies how to diffuse improved cooking technologies in rural Senegal via supply-side mechanisms (Chapter 2), and it identifies the need to target cooking technologies in consideration of the broader household context in rural Senegal and beyond (Chapter 3).
Sentences that present a complex linguistic structure act as a major stumbling block for Natural Language Processing (NLP) applications whose predictive quality deteriorates with sentence length and complexity. The task of Text Simplification (TS) may remedy this situation. It aims to modify sentences in order to make them easier to process, using a set of rewriting operations, such as reordering, deletion or splitting. These transformations are executed with the objective of converting the input into a simplified output, while preserving its main idea and keeping it grammatically sound. State-of-the-art syntactic TS approaches suffer from two major drawbacks: first, they follow a very conservative approach in that they tend to retain the input rather than transforming it, and second, they ignore the cohesive nature of texts, where context spread across clauses or sentences is needed to infer the true meaning of a statement. To address these problems, we present a discourse-aware TS framework that is able to split and rephrase complex English sentences within the semantic context in which they occur. By generating a fine-grained output with a simple canonical structure that is easy to analyze by downstream applications, we tackle the first issue. For this purpose, we decompose a source sentence into smaller units by using a linguistically grounded transformation stage. The result is a set of selfcontained propositions, with each of them presenting a minimal semantic unit. To address the second concern, we suggest not only to split the input into isolated sentences, but to also incorporate the semantic context in the form of hierarchical structures and semantic relationships between the split propositions. In that way, we generate a semantic hierarchy of minimal propositions that benefits downstream Open Information Extraction (IE) tasks. To function well, the TS approach that we propose requires syntactically well-formed input sentences. It targets generalpurpose texts in English, such as newswire or Wikipedia articles, which commonly contain a high proportion of complex assertions.
In a second step, we present a method that allows state-of-the-art Open IE systems to leverage the semantic hierarchy of simplified sentences created by our discourseaware TS approach in constructing a lightweight semantic representation of complex assertions in the form of semantically typed predicate-argument structures. In that way, important contextual information of the extracted relations is preserved that allows for a proper interpretation of the output. Thus, we address the problem of extracting incomplete, uninformative or incoherent relational tuples that is commonly to be observed in existing Open IE approaches. Moreover, assuming that shorter sentences with a more regular structure are easier to process, the extraction of relational tuples is facilitated, leading to a higher coverage and accuracy of the extracted relations when operating on the simplified sentences. Aside from taking advantage of the semantic hierarchy of minimal propositions in existing Open IE Abstract approaches, we also develop an Open IE reference system, Graphene. It implements a relation extraction pattern upon the simplified sentences.
The framework we propose is evaluated within our reference TS implementation DisSim. In a comparative analysis, we demonstrate that our approach outperforms the state of the art in structural TS both in an automatic and a manual analysis. It obtains the highest score on three simplification datasets from two different domains with regard to SAMSA (0.67, 0.57, 0.54), a recently proposed metric targeted at automatically measuring the syntactic complexity of sentences which highly correlates with human judgments on structural simplicity and grammaticality. These findings are supported by the ratings from the human evaluation, which indicate that our baseline implementation DisSim returns fine-grained simplified sentences that achieve a high level of syntactic correctness and largely preserve the meaning of the input. Furthermore, a comparative analysis with the annotations contained in the RST Discourse Treebank (RST-DT) reveals that we are able to capture the contextual hierarchy between the split sentences with a precision of approximately 90% and reach an average precision of almost 70% for the classification of the rhetorical relations that hold between them. Finally, an extrinsic evaluation shows that when applying our TS framework as a pre-processing step, the performance of state-ofthe-art Open IE systems can be improved by up to 32% in precision and 30% in recall of the extracted relational tuples.
Accordingly, we can conclude that our proposed discourse-aware TS approach succeeds in transforming sentences that present a complex linguistic structure into a sequence of simplified sentences that are to a large extent grammatically correct, represent atomic semantic units and preserve the meaning of the input. Moreover, the evaluation provides sufficient evidence that our framework is able to establish a semantic hierarchy between the split sentences, generating a fine-grained representation of complex assertions in the form of hierarchically ordered and semantically interconnected propositions. Finally, we demonstrate that state-of-the-art Open IE systems benefit from using our TS approach as a pre-processing step by increasing both the accuracy and coverage of the extracted relational tuples for the majority of the Open IE approaches under consideration. In addition, we outline that the semantic hierarchy of simplified sentences can be leveraged to enrich the output of existing Open IE systems with additional meta information, thus transforming the shallow semantic representation of state-of-the-art approaches into a canonical context-preserving representation of relational tuples.
Die Studie betrachtet das Matthäusevangelium als zusammenhängende und durchkomponierte Erzählung, um anhand einer narrativen Analyse eine Charakterisierung der Judasfigur vorzunehmen. Dieser Ansatz berücksichtigt, wie sich die Figur in das Gesamtkonzept des Textes einfügt und welches Erzählinteresse mit ihr verfolgt wird. Diese synchrone, zusammenhängende Lesart erhellt: Judas ist im Matthäusevangelium keine rein historische Figur, sondern seine Darstellung hat eine bestimmte Funktion, die mit dem historischen Kontext, der Pragmatik und der theologischen Konzeption des gesamten Textes zu tun hat. Das Matthäusevangelium behandelt das Thema der Schülerschaft und Nachfolge Jesu, wobei die beiden Pole „Mit-Jesus-Sein“ und „Wenigvertrauen“ eine zentrale Rolle spielen. Vor diesem Horizont steht Judas nicht für den „Bösen“, von dem sich die Leserinnen und Leser abgrenzen sollten, sondern er ist Teil der Nachfolgegemeinschaft. Sein Scheitern könnte im Grunde jeden treffen oder anders gesagt: Jeder könnte Judas sein.
Zugleich bietet der Text Strategien an, wie mit derartigem Versagen umzugehen ist: Scheitern darf nicht in die Selbstisolation führen, sondern der Erzählzusammenhang verdeutlicht, dass es eine Möglichkeit der Rückkehr zur Gruppe und Vergebung für einen einsichtigen Sünder gibt.
This dissertation deals with geostatistical, time series, and regression analytical approaches for modelling spatio-temporal processes, using air quality data in the applications. The work is structured into four essays the abstracts of which are given in the following.
The first essay is titled 'Spatial detrending revisited: Modelling local trend patterns in NO2-concentration in Belgium and Germany'. It is written in co-authorship by Prof. Dr. Harry Haupt and Dr. Angelika Schmid and published in 2018 in Spatial Statistics 28, pp. 331-351 (https://doi.org/10.1016/j.spasta.2018.04.004).
Abstract
Short-term predictions of air pollution require spatial modelling of trends, heterogeneities, and dependencies. Two-step methods allow real-time computations by separating spatial detrending and spatial extrapolation into two steps. Existing methods discuss trend models for specific environments and require specification search. Given more complex environments, specification search gets complicated by potential nonlinearities and heterogeneities. This research embeds a nonparametric trend modelling approach in real-time two-step methods. Form and complexity of trends are allowed to vary across heterogeneous environments. The proposed method avoids ad hoc specifications and potential generated predictor problems in previous contributions. Examining Belgian and German air quality and land use data, local trend patterns are investigated in a data driven way and are compared to results computed with existing methods and variations thereof. An important aspect of our empirical illustration is the heterogeneity and superior performance of local trend patterns for both research regions. The findings suggest that a nonparametric spatial trend modelling approach is a valuable tool for real-time predictions of pollution variables: it avoids specification search, provides useful exploratory insights and reduces computational costs.
The second essay is titled 'Predictability of hourly nitrogen dioxide concentration'. It is written in co-authorship with Prof. Dr. Harry Haupt and published in 2020 in Ecological Modelling 428, 109076 (https://doi.org/10.1016/j.ecolmodel.2020.109076).
Abstract
Temporal aggregation of air quality time series is typically used to investigate stylized facts of the underlying series such as multiple seasonal cycles. While aggregation reduces complexity, commonly used aggregates can suffer from non-representativeness or non-robustness. For example, definitions of specific events such as extremes are subjective and may be prone to data contaminations. The aim of this paper is to assess the predictability of hourly nitrogen dioxide concentrations and to explore how predictability depends on (i) level of temporal aggregation, (ii) hour of day, and (iii) concentration level. Exploratory tools are applied to identify structural patterns, problems related to commonly used aggregate statistics and suitable statistical modeling philosophies, capable of handling multiple seasonalities and non-stationarities. Hourly times series and subseries of daily measurements for each hour of day are used to investigate the predictability of pollutant levels for each hour of day, with prediction horizons ranging from one hour to one week ahead. Predictability is assessed by time series cross validation of a loss function based on out-of-sample prediction errors. Empirical evidence on hourly nitrogen dioxide measurements suggests that predictability strongly depends on conditions (i)-(iii) for all statistical models: for specific hours of day, models based on daily series outperform models based on hourly series, while in general predictability deteriorates with exposure level.
The third essay is titled 'Agglomeration and infrastructure effects in land use regression models for air pollution – Specification, estimation, and interpretations'. It is written in co-authorship with Dr. Markus Fritsch and published in 2021 in Atmospheric Environment 253, 118337 (https://doi.org/10.1016/j.atmosenv.2021.118337).
Abstract
Established land use regression (LUR) techniques such as linear regression utilize extensive selection of predictors and functional form to fit a model for every data set on a given pollutant. In this paper, an alternative to established LUR modeling is employed, which uses additive regression smoothers. Predictors and functional form are selected in a data-driven way and ambiguities resulting from specification search are mitigated. The approach is illustrated with nitrogen dioxide (NO2) data from German monitoring sites using the spatial predictors longitude, latitude, altitude and structural predictors; the latter include population density, land use classes, and road traffic intensity measures. The statistical performance of LUR modeling via additive regression smoothers is contrasted with LUR modeling based on parametric polynomials. Model evaluation is based on goodness of fit, predictive performance, and a diagnostic test for remaining spatial autocorrelation in the error terms.
Additionally, interpretation and counterfactual analysis for LUR modeling based on additive regression smoothers are discussed. Our results have three main implications for modeling air pollutant concentration levels: First, modeling via additive regression smoothers is supported by a specification test and exhibits superior in- and out-of-sample performance compared to modeling based on parametric polynomials. Second, different levels of prediction errors indicate that NO2 concentration levels observed at background and traffic/industrial monitoring sites stem from different processes. Third, accounting for agglomeration and infrastructure effects is important: NO2 concentration levels tend to increase around major cities, surrounding agglomeration areas, and their connecting road traffic network.
The fourth essay is titled 'Outlier detection and visualisation in multi-seasonal time series and its application to hourly nitrogen dioxide concentration'. It is written in single authorship and has not been published yet.
Abstract
Outlier detection in data on air pollutant recordings is conducted to uncover data points that refer to either invalid measurements or valid but unusually high concentration levels. As air pollutant data is typically characterised by multiple seasonalities, the task of outlier detection is associated with the question of how to deal with such non-stationarities. The present work proposes a method that combines time series segmentation, seasonal adjustment, and standardisation of random variables. While the former two are employed to obtain subseries of homoskedastic data, the latter ensures comparability across the subseries. Further, the standardised version of the seasonally adjusted subseries represents a scaled measure for the outlyingness of each data point in the original time series from its mean and therefore forms a suitable basis for outlier detection. In an empirical application to data on hourly NO2 concentration levels recorded at a traffic monitoring site in Cologne, Germany, over the years 2016 to 2019, the common boxplot criterion is used to examine each standardised seasonally adjusted subseries for positive outliers. The results of the analyses are put into their natural temporal order and displayed in a heatmap layout that provides information on when single and sequential outliers occur.
Das Durchsetzungssystem der Datenschutz-Grundverordnung (DS-GVO) regelt in den Art. 77 ff. DS-GVO nur ansatzweise die Durchsetzung der Rechte der Betroffenen durch Dritte. Die Arbeit hat sich deshalb zum Ziel gesetzt, Rechtsdurchsetzungsmöglichkeiten von Verbänden und Mitbewerbern in Deutschland genauer zu beleuchten. Hierzu wird zunächst der Spielraum untersucht, den die Datenschutz-Grundverordnung Dritten bei der Rechtsdurchsetzung einräumt, also mit anderen Worten, ob deren Rechtsbehelfssystem eine Sperrwirkung für die Mitgliedstaaten zeitigt. Darauf aufbauend wird näher untersucht, ob das Gesetz gegen den unlauteren Wettbewerb (UWG) und das Gesetz über Unterlassungsklagen bei Verbraucherrechts- und anderen Verstößen (UKlaG) innerhalb des ermittelten Spielraums verbleiben.
Poverty, underemployment, lack of infrastructure, low agricultural productivity, degradation of natural resources, climate change, and eroding social cohesion are among the biggest challenges that many low and lower-middle income countries are facing. Objectives linked to addressing these pressing challenges have been ascribed to public works programmes (PWPs). These are social protection instruments which offer remuneration (in cash or kind) for vulnerable people in exchange for temporary work on labour-intensive low-skill activities with social benefits. PWPs are being implemented in around two out of three developing countries. Given the substantial amounts spent on PWPs, it is critical to know to what extent the expectations towards them are backed by evidence. This dissertation sheds light on this overarching question with three self-contained essays. The first essay synthesises the evidence from PWPs in Sub-Saharan Africa, guided by three questions: First, what can we infer from the available impact evaluations regarding the effectiveness of PWPs as a social protection instrument? Second, what do we know about the role of the wage vector, asset vector, and skills vector in this respect? Third, what can we infer about the role of design features in explaining differences in outcomes? The other two essays use empirical evidence from Malawi to address more specific questions regarding the potential of PWPs to strengthen climate resilience and the relationship between PWPs and social cohesion.
What sets the evidence synthesis in my first essay apart from existing reviews of PWPs is that it accounts for their heterogeneity by systematically differentiating results by PWP type and outcome area (income, consumption and expenditures, labour supply, food security, nutrition, asset holdings, agricultural production and techniques, and education). Programmes that offer short-term ad-hoc employment (Type 1) are distinguished from programmes that offer more predictable employment over longer periods (Type 2). For the review of impacts, this paper relies solely on (quasi-)experimental studies, but for the analysis of the role of design factors also on other literature. In line with existing reviews, my results suggest that Type 1 programmes can effectively enable consumption smoothing in the wake of acute crises, whereas in contexts of chronic poverty, Type 2 programmes perform, on balance, better. Offering complementary access to extension services in Type 2 programmes can boost impacts further. However, in all cases, evidence is too scant and mixed to safely conclude whether the higher benefits of costlier PWP types justify the cost premium.
The second essay investigates the potential of PWPs to strengthen climate resilience. Among the main social protection instruments, the biggest potential to strengthen climate resilience is often ascribed to PWPs if they create climate-smart community assets and transfer knowledge of climate-smart practices. Yet, there is a lack of evidence whether design changes to this end can indeed enhance the contribution of an existing PWP to climate resilience. I use a difference-in-differences approach based on two-period panel data to analyse how a modified PWP model performs compared to the standard model of Malawi’s largest PWP after 24 months. The key modification is to embed public works in a communal watershed management plan with a strong emphasis on collective action and capacity building. I find that the modified approach considerably increased communal watershed management activities through voluntary labour contributions on top of the paid public works labour. While this increase was mainly driven by PWP participants, non-participants also made substantial contributions. I also find a small increase in the adoption of soil and water conservation practices on respondents’ private land, especially by non-PWP participants. These findings imply that such modest changes can make PWPs climate-smarter. In particular, they can broaden the engagement in and adoption of climate-smart activities beyond the group of PWP participants.
The co-authored third essay investigates the relationship between Malawi’s MASAF PWP and social cohesion, specifically within-community cooperation for the common good. Like the existing studies, we face the challenge that neither the assignment of the programme to communities nor the selection of individual participants is randomised. We try to mitigate the endogeneity concerns by triangulating fixed effects panel analyses for a set of outcomes and sectors using two datasets with different units of analysis (households and communities). We find that public works are positively associated with coordination activities and voluntary (unpaid) contributions to public goods, along both vertical ties (between community members and local leaders) and horizontal ties (among community members). Especially for school-building activities, voluntary inputs in the form of labour and other in-kind contributions are higher in the presence of the public works programme. Our results contribute to a better understanding of the link between social protection programmes with community-driven features and social cohesion.
Overall, the findings of the three essays in this dissertation contribute to the knowledge base regarding effectiveness and potential of PWPs across a broad range of outcome areas. Specifically, they offer new insights how to harness the potential of PWP to strengthen climate resilience and into the seemingly positive relationship between PWPs and social cohesion. The findings can help researchers and policy makers who are interested specifically in PWPs or in any of the many objectives that can be pursued through PWPs.
In meiner Dissertationsschrift schlage ich vor, gesellschaftliche – auf einer Mikroebene der spätsozialistischen Gesellschaft der DDR liegende – Interaktionsprozesse durch das analytische Visier des Konzeptes Persönlichkeit und seiner Dimensionen zu lesen und zu dechiffrieren. Dabei gehe ich davon aus, dass jene Dimensionen in Form von lebensgeschichtlichen Motiven, Wünschen und Ideologemen sowie normativen Forderungen und Bewertungen im Zentrum dieser Interaktionen standen und innerhalb der spätsozialistischen Sinnwelt (zum Begriff vgl. Kapitel 1.2.1; Sabrow 2007) prägend wurden.
Gestützt wird dieser Ansatz durch die Tatsache, dass Persönlichkeit ein zentrales innersystemisches Diskursmotiv des Spätsozialismus war und den diskursiv konstruierten offiziellen Gesellschaftsentwurf prägte (Kapitel 2). Als Teil der „Erziehungsdiktatur“ (Dietrich 2018: S. XXIX) prägte die Figur der sozialistischen Persönlichkeit die ideologischen Diskurse der DDR.
Vor diesem Hintergrund widme ich mich vier Fallstudien (Kapitel 3), in denen ich von mir erhobene narrativ-biografische Interviews mit vier Zeitzeugen sowie die zu diesen Personen durch das MfS geführten Vorgänge als verflochtene, konkurrierende und interagierende Narrationen lese (zur Methode vgl. Kapitel 1.2.1–1.2.4). Was diese Analysen deutlich zeigen, ist, dass sich in den einzelnen Fällen spezifische, sinn- und lebensweltlich eingebundene Konflikte und Interaktionsprozesse kondensierten, die ihrerseits Dimensionen von Persönlichkeit semantisierten oder aber auf deren Grundlage geführt wurden. Innerhalb der sinn- und lebensweltlichen Verflechtungen rezipierten die verschiedenen Akteur*innen (meine Gesprächspartner, ihre Freund*innen, staatliche Organe) die unterschiedlichen Referenzsysteme und diskursiven Einflüsse und zogen daraus entsprechende Konsequenzen für das eigene Handeln, eigene Ideen, Wünsche und Normen. In unterschiedlichen Ausprägungen und Formen artikulierten sie diese sinnweltlichen Verarbeitungen und traten so in kommunikative und performative Interaktionsprozesse, die wiederum das sinnweltliche Gefüge beeinflussten, da sie rezipiert wurden respektive sogar rezipiert werden sollten. Im Zentrum dieser Prozesse stand das Ideal kollektivistisch denkender, mitarbeitender und engagierter sozialistischer Persönlichkeiten. Alle vier Herren betrieben auf ihre jeweils spezifische Weise die Dekonstruktion dieses Ideals und wurden dabei durch die staatlichen Organe sprachlich bewertet, kriminalisiert, exkludiert oder vereinnahmt.
Das Studium der vier Fallgeschichten zeigt auf: Die staatlichen Akteur*innen, vor allem aber ihre kommunikativen Strategien, ihr Sprachgebrauch waren nicht in der Lage eine tatsächlich qualitative Erfassung zu bieten. Vielmehr wurden sprachliche Bausätze genutzt, die jede Abweichung, jedes nicht-sozialistische Verhalten von Persönlichkeiten als Defizit stigmatisierten und gerade dadurch die eigene Inadäquatheit und somit die Überforderung der staatlichen Organe offenbarten. Die Dynamik des Spätsozialismus konnten sie deshalb sprachlich nicht mehr vereinnahmen. So bietet die vorliegende Arbeit einen weiteren Einblick in den Wesenskern der spätsozialistischen, diktatorischen Herrschaft in der DDR.