Open Access Books

Etwa 20 % des weltweiten Energieverbrauchs lassen sich auf die Überwindung von Reibung zurückführen. Zur Reduzierung von Reibungsverlusten werden im Maschinenbau daher verstärkt niedrigviskose Schmierstoffe eingesetzt, welche jedoch zu geringeren Schmierfilmdicken und damit zu einem vermehrten Betrieb von hochbelasteten Maschinenelementen im Misch- oder Grenzreibungsgebiet führen. Daraus resultiert wiederum eine mögliche Zunahme des Verschleißes. Da Verschleiß zu katastrophalen Ausfällen und Betriebsstörungen führen kann, bietet die zuverlässige Vorhersage und Berechnung von Verschleiß Vorteile hinsichtlich der ressourcenschonenden Auslegung von Maschinenelementen und der Berechnung von Lebensdauern. Im Rahmen der vorliegenden Arbeit wurde eine numerische auf der Finite-Elemente-Methode basierende umfassende Verschleißsimulation für geschmierte und trockenlaufende sowie beschichtete Wälzkontakte erarbeitet. Weiterhin wurde ein Vorgehensmodell zur experimentellen Ermittlung eines Verschleißkoeffizienten auf Modellebene für die Anwendung eines Verschleißmodells mithilfe eines 2-Scheiben-Tribometers aufgestellt. Zuletzt wurde ein Vergleich zwischen Ergebnissen der numerischen Verschleißsimulation und experimentellen Versuchen aufgestellt, um darauf aufbauend zukünftige Forschungspotenziale abzuleiten. Die Implementierung der Verschleißsimulation in kommerzieller Software sowie die Ableitung eines Vorgehensmodells zur experimentellen Ermittlung von Verschleißkoeffizienten auf Modellebene als Eingangsgröße für die Verschleißsimulation ermöglichen zukünftig eine breite Nutzbarkeit durch Forschende sowie Entwicklungsingenieurinnen und -ingenieure für verschiedenste technische Anwendungen.

This book offers the first full-length study of Charlotte Smith’s Elegiac Sonnets and clarifies its ‘place’ – in multiple ways – in literary history as a work celebrated for ‘making it new’, yet deeply engaged with the literary past. It argues that Smith’s sonnets are constituted by three intertwined concerns: with tradition, place and the sonnet form itself, whereby the subjects of Smith’s sonnets – across birds, rivers, the sea, plants and flowers – are bound up with the literary context in which she wrote. Charlotte Smith and the Sonnet shows that Smith’s verse engages more deeply with tradition than has hitherto been realised and revises our understanding not only of Smith’s career but also of the sonnet in eighteenth-century England. The book also illuminates Smith’s place in posterity, as a popular poet – influencing figures ranging from Wordsworth and Coleridge to Constable – who was subsequently obscured in literary history. It reveals the complex processes underpinning Smith’s reception and paradoxical position from the late eighteenth century to the present day, and shows that the appropriation of place itself was an important way in which aspects of literary tradition have been negotiated and understood by Smith, her predecessors, contemporaries and successors.

Porno-Graphics and Porno-Tactics asks whether, and how, it is possible to re-appropriate pornography and think through it critically and creatively for a project of liberation. In the different contributions which make up this deliberately heterogeneous collection of short, non-canonical essays, such a quest proceeds by re-articulating the aporias of desire, intimacy, touch and seduction. It also relates them to claims of visibility, visions of emancipation and its failures, as well as to the politics of violence that we get exposed to through circulating images and affects. This is an attempt to exceed the limits set by and for ourselves in relation to how we connect to our own bodies, to the bodies of our lovers and to the bodies of the theories we live with, sleep with and dream about – in short, to all that we get attached to. The editors and contributors of this collection do not claim the euphoric potentiality of pornography as necessarily subversive and emancipatory, but are nevertheless open to the possibilities of re-shaping it (in textual, contextual, intertextual, but also affective and embodied forms) through different graphic and tactical/tactile inscriptions. On the one hand, authors reflect on definitions and practices of pornography as a genre adopting specific codes and canons, whether it is concerned with sex acts and the industry of porn or with other predominant forms of representation and the structures of power underlying them. On the other hand, chapters relate to the more affective, libidinal, synaesthetic and inter/subjective dimensions of pornography, and on the capacity of different reappropriations to subvert its limits.

This volume presents the amended version of Reinhold’s award-winning script on the question of what progress metaphysics has made since Leibniz and Wolf in Germany (asked by the Preußische Akademie der Wissenschaften). The book includes the versions of the first main part, an introduction, and a detailed commentary.

Sergii Bulgakov (1871–1944) is one of the preeminent theologians of the 20th century whose work is still being discovered and explored in and for the 21st century. The famous rival of Lenin in the field of economics, was, according to Wassily Kandinsky, “one of the deepest experts on religious life” in early twentieth-century Russian art and culture. As economist, publicist, politician, and later Orthodox theologian and priest, he became a significant “global player” in both the Orthodox diaspora and the Ecumenical movement in the interwar period. This anthology gathers the papers delivered at the international conference on the occasion of Bulgakov’s 150th birthday at the University of Fribourg in September 2021. The chapters, written by established Bulgakov specialists, including Rowan Williams, former Archbishop of Canterbury (2002–2012), as well as young researchers from different theological disciplines and ecclesial traditions, explore Bulgakov’s way of meeting the challenges in the modern world and of building bridges between East and West. The authors bring forth a wide range of new creative ways to constructively engage with Bulgakov’s theological worldview and cover topics such as personhood, ecology, political theology and Trinitarian ontology.

What does it mean politically to construct climate change as a matter of urgency? We are certainly running out of time to stop climate change. But perhaps this particular understanding of urgency could be at the heart of the problem. When in haste, we make more mistakes, we overlook things, we get tunnel vision. Here we make the case for a ‘slow politics of urgency’. Rather than rushing and speeding up, the sustainable future is arguably better served by us challenging the dominant framings through which we understand time and change in society. Transformation to meet the climate challenge requires multiple temporalities of change, speeding up certain types of change processes but also slowing things down. While recognizing the need for certain types of urgency in climate politics, Haste directs attention to the different and alternative temporalities at play in climate and sustainability politics. It addresses several key issues on climate urgency: How do we accommodate concerns that are undermined by the politics of urgency, such as participation and justice? How do we act upon the urgency of the climate challenge without reproducing the problems that speeding up of social processes has brought? What do the slow politics of urgency look like in practice? Divided into 23 short and accessible chapters, written by both established and emerging scholars from different disciplines, Haste tackles a major problem in contemporary climate change research and offers creative perspectives on pathways out of the climate emergency.

Urban Nightlife and Contested Spaces: Cultural Encounters after Dusk captures the multifarious nature of the urban night and how it is lived, structured, and reflected upon in diverse cultural and artistic expressions. The volume acknowledges the urban night as an often-overlooked key dimension necessary to understand the complexities of today’s urban spaces, including the often-polarizing question of migration. After dusk, urban social challenges are often magnified, as questions of who can be where and when – along ethnic, racial or gender lines, for example – gain an additional dimension. The volume underscores, indeed, the multi-dimensionality of night spaces, where bottom-up, grassroot initiatives provide opportunities for self-expression by traditionally marginalized and silenced groups. Chapters span disciplines of urbanism and urban history, literary, film and cultural studies, music, sociology of labour, anthropology of migration, alongside autoethnographic contributions and practice-based photo essays by artists for whom the night is their habitual setting and canvas.

Network protocols and security are the backbone of communication and data exchange in today's interconnected world. The critical issues that influence how networking and cybersecurity develop are explored in depth in this book. From scalability issues in expanding networks to ensuring interoperability among diverse systems, the book explores the complexities of modern networks. It examines the persistent threats posed by latency, DoS attacks, and encryption vulnerabilities. The book highlights the importance of robust authentication systems and proactive defenses against advanced cyber threats. Special emphasis is placed on addressing protocol design flaws and the implications of dynamic threat landscapes. Readers will also discover insights into the role of energy-efficient protocols in IoT networks. The book focuses on real-world applications and offers practical strategies to tackle these pressing issues. Regardless of the reader's background, who may be a student, professional, or enthusiast, this book gives everyone the skills to handle the difficulties associated with network protocols and security. Prepare to unlock the key to building secure, resilient, and future-ready networks.

Composed between 1448 and 1449, the Vita del beato Giovanni Colombini by Feo Belcari was printed for the first time in 1477 and was destined to growing publishing success over the following centuries both as an independent text and in miscellany dedicated to the blessed. It will be the third edition of the Accademia della Crusca Vocabolario, published in 1691, to increase its affirmation by admitting the entire poetic and prose work of Belcari among the privileged references for the Tuscan vernacular and the Italian language. A recognition that will lead to a Veronese edition of the work in 1817, edited by authoritative scholars of Italian humanistic literature, which will condition many reprints of the work during the first half of the nineteenth century and which will persist even later, when it will be included in series very different, between religious and linguistic / literary interests.

This open access textbook introduces beginning undergraduate students and high school students to the world of quantum mechanics and atomic spectroscopy. Requiring no previous knowledge of physics and no math beyond basic algebra and sines and cosines, this book focuses on concepts to make the excitement of atomic physics more accessible for learners than ever before. It comes replete with learning goals, exercises and solutions, and an optional experimental component, making this text readily adoptable for both the classroom and the undergraduate lab. The book takes the reader on a lively and engaging tour through topics at the forefront of current science, including photons, quantum numbers, atomic energy levels, some different spectroscopy techniques, electronic structure, atomic notation, angular momentum, hyperfine structure, isotope shifts, the strong force, an introduction to the Standard Model of Particle Physics, and more. This is an open access book.

In this elementary textbook, Philip S. Peek draws on his twenty-five years of teaching experience to present the ancient Greek language in an imaginative and accessible way that promotes creativity, deep learning, and diversity. The course is built on three pillars: memory, analysis, and logic. Readers memorize the top 550 most frequently occurring ancient Greek words, the essential word endings, the eight parts of speech, and the grammatical concepts they will most frequently encounter when reading authentic ancient texts. Analysis and logic exercises enable the identification of clitics and full words as well as the translation and parsing of genuine ancient Greek sentences, with compelling reading selections in English and in Greek offering starting points for contemplation, debate, and reflection. A series of thirty entries by James F. Patterson, using a simplified morphophonemic approach to understanding language improve readers’ understanding of word formation, their vocabulary, and their ability to read and understand Ancient Greek. This combination of memory-based learning and concept- and skill-based learning gradually builds the confidence of the reader, teaching them how to learn by guiding them from a familiarity with the basics to proficiency in reading this beautiful language. Ancient Greek II: A 21st-Century Approach is written for high-school and university students, but is an instructive and rewarding text for anyone who wishes to learn ancient Greek.

L’étude porte sur le leadership scolaire dans les écoles maternelles, primaires et secondaires de la RDC. En RDC et dans d’autres pays de l’Afrique sub-saharienne, bien d’écoles fonctionnent dans des conditions très précaires. Pourtant les objectifs du Développement durable (ODD) présentent l’éducation de qualité comme exigence et droit de tout enfant. La précarité ne devrait donc pas constituer en aucun cas, une excuse pour cette éducation de qualité. Considérant l’importance du leadership scolaire dans l’effectivité des apprentissages, l’étude propose une analyse sur les types du leadership scolaire à appliquer pour développer la qualité de l’éducation même en situation de précarité. Grâce à une approche qualitative, aux interviews semi-structurées, à la théorie ancrée et à l’abduction, l’étude a dégagé cinq types principaux et idéaux du leadership scolaire : le leadership instructionnel (accent sur le processus enseignement-apprentissage), le leadership partagé (accent sur l’implication de tous), le leadership entrepreneurial (accent sur l’entrepreneuriat), le leadership situationnel (accent sur le style de leadership à appliquer suivant le contexte) et le leadership d’inertie (accent sur les procédures et l’autorité). Ces types ont été discutés suivant leurs impacts respectifs sur l’éducation de qualité. Quelques suggestions sur l’amélioration du système éducatif de la RDC concluent cette étude.

Industrial / commercial art & design

This volume offers the first bilingual edition of a major text in the history of epistemology, Diogenes Laertius's report on Pyrrho and Timon in his Lives of Eminent Philosophers. Leading experts contribute a philosophical introduction, translation, commentary, and scholarly essays on the nature of Diogenes's report as well as core questions in recent research on skepticism.

The book is the result of a collective research work between the members of the team of the project "Over the Atlantic" (co-founded by the Erasmus + programme). A critical introduction presents the work, the content and the scope of the research, carried out with an interdisciplinary approach. This book consists of three main parts. The first discusses the institutionalization and normalization of paradiplomacy in some specific and well-documented case studies regarding the Latin America region. The second one refers to the relationship between paradiplomacy and cooperation in the context of international and regional relations. The third part analyses Cities and Parliaments as international diplomatic actors. The theme of Paradiplomacy, as a means of unofficial relationships that reacts differently to the pressure of the international system, and the role of the local authorities, despite its relevance and importance, is scarcely analysed by academia.