289 research outputs found

    The Long Lives of Old Lutes: The Cultural and Material History of the Veneration of Old Musical Instruments

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    This study examines the object biographies of musical instruments and the function of age in the cultural and material history of the lute. It follows the central question of why old instruments were valued more greatly than new ones and what measures had to be executed to adapt the objects to the ever-changing musical style. It traces the lute in its several cultural functions from the 17th to the 19th century: as a musical instrument, as a symbol, as a commodity, and as an object that had to be adapted, repaired, and altered by several generations of lute makers. This interdisciplinary approach uses a broad spectrum of sources from treatises, lute manuals, forewords in printed lute music, and depictions of lutes in literature, poetry, and visual arts to construct a narrative of the appreciation of old musical instruments. It investigates the material changes that were necessary to ensure their continued use by a profound study of more than 100 instruments in public and private collections. The different business models and prices in the trade of lutes are compared and connected to the common knowledge about old instruments and their brand characteristics among lute players. This study employs methods from musicology, organology, material culture studies, acoustics, economics, art history, technology, and digital humanities. This multivalent approach enhances the understanding of the general dynamics of commodities as status symbols, object biographies, and functional objects and connects them to the material and cultural history of objects using the lute as a case study.Die Studie untersucht die Objektbiografien von Musikinstrumenten und die Funktion des Alters für die kulturelle und materielle Geschichte von Lauteninstrumenten. Sie geht der zentralen Frage nach, warum alte Instrumente höher geschätzt wurden als neue und welche Maßnahmen ergriffen werden mussten, um die Objekte an den sich ständig verändernden Musikstil anzupassen. Sie verfolgt die Laute in ihren verschiedenen kulturellen Funktionen vom 17. bis zum 19. Jahrhundert: als Musikinstrument, als Symbol, als Gebrauchsgegenstand und als Objekt, das von mehreren Generationen von Lautenbauern angepasst, repariert und verändert werden musste. Der interdisziplinäre Ansatz nutzt ein breites Spektrum von Quellen wie Traktate, Lautenhandbücher, Vorworte in gedruckter Lautenmusik und Darstellungen von Lauten in Literatur, Poesie und bildender Kunst, um die Geschichte der Wertschätzung alter Musikinstrumente nachzuverfolgen. Anhand einer eingehenden Untersuchung von mehr als 100 Instrumenten in öffentlichen und privaten Sammlungen werden die Eingriffe untersucht, die notwendig waren, um ihre weitere Nutzung zu gewährleisten. Die unterschiedlichen Geschäftsmodelle und Preise im Handel mit Lauten werden verglichen und mit dem Wissensvorrat unter Lautenisten über alte Instrumente und deren Markencharakteristiken in Verbindung gebracht. Die Studie verwendet Methoden aus der Musikwissenschaft, der Organologie, der materiellen Kulturwissenschaft, der Akustik, der Ökonomie, der Kunstgeschichte, der Instrumentenbautechnologie und der Digital Humanities. Der multivalente Ansatz verbessert das Verständnis der allgemeinen Dynamik von Waren als Statussymbole, von Objektbiografien funktionaler Objekte und verbindet sie mit der materiellen und kulturellen Geschichte der Objekte am Beispiel der Laute

    Breaking the Curse of Dimensionality in Deep Neural Networks by Learning Invariant Representations

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    Artificial intelligence, particularly the subfield of machine learning, has seen a paradigm shift towards data-driven models that learn from and adapt to data. This has resulted in unprecedented advancements in various domains such as natural language processing and computer vision, largely attributed to deep learning, a special class of machine learning models. Deep learning arguably surpasses traditional approaches by learning the relevant features from raw data through a series of computational layers. This thesis explores the theoretical foundations of deep learning by studying the relationship between the architecture of these models and the inherent structures found within the data they process. In particular, we ask What drives the efficacy of deep learning algorithms and allows them to beat the so-called curse of dimensionality-i.e. the difficulty of generally learning functions in high dimensions due to the exponentially increasing need for data points with increased dimensionality? Is it their ability to learn relevant representations of the data by exploiting their structure? How do different architectures exploit different data structures? In order to address these questions, we push forward the idea that the structure of the data can be effectively characterized by its invariances-i.e. aspects that are irrelevant for the task at hand. Our methodology takes an empirical approach to deep learning, combining experimental studies with physics-inspired toy models. These simplified models allow us to investigate and interpret the complex behaviors we observe in deep learning systems, offering insights into their inner workings, with the far-reaching goal of bridging the gap between theory and practice.Comment: PhD Thesis @ EPF

    Blockchain-enabled Data Governance for Privacy-Preserved Sharing of Confidential Data

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    In a traditional cloud storage system, users benefit from the convenience it provides but also take the risk of certain security and privacy issues. To ensure confidentiality while maintaining data sharing capabilities, the Ciphertext-Policy Attribute-based Encryption (CP-ABE) scheme can be used to achieve fine-grained access control in cloud services. However, existing approaches are impaired by three critical concerns: illegal authorization, key disclosure, and privacy leakage. To address these, we propose a blockchain-based data governance system that employs blockchain technology and attribute-based encryption to prevent privacy leakage and credential misuse. First, our ABE encryption system can handle multi-authority use cases while protecting identity privacy and hiding access policy, which also protects data sharing against corrupt authorities. Second, applying the Advanced Encryption Standard (AES) for data encryption makes the whole system efficient and responsive to real-world conditions. Furthermore, the encrypted data is stored in a decentralized storage system such as IPFS, which does not rely on any centralized service provider and is, therefore, resilient against single-point failures. Third, illegal authorization activity can be readily identified through the logged on-chain data. Besides the system design, we also provide security proofs to demonstrate the robustness of the proposed system.Comment: 23 pages, 19 algorithms, 1 figur

    The Fifteenth Marcel Grossmann Meeting

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    The three volumes of the proceedings of MG15 give a broad view of all aspects of gravitational physics and astrophysics, from mathematical issues to recent observations and experiments. The scientific program of the meeting included 40 morning plenary talks over 6 days, 5 evening popular talks and nearly 100 parallel sessions on 71 topics spread over 4 afternoons. These proceedings are a representative sample of the very many oral and poster presentations made at the meeting.Part A contains plenary and review articles and the contributions from some parallel sessions, while Parts B and C consist of those from the remaining parallel sessions. The contents range from the mathematical foundations of classical and quantum gravitational theories including recent developments in string theory, to precision tests of general relativity including progress towards the detection of gravitational waves, and from supernova cosmology to relativistic astrophysics, including topics such as gamma ray bursts, black hole physics both in our galaxy and in active galactic nuclei in other galaxies, and neutron star, pulsar and white dwarf astrophysics. Parallel sessions touch on dark matter, neutrinos, X-ray sources, astrophysical black holes, neutron stars, white dwarfs, binary systems, radiative transfer, accretion disks, quasars, gamma ray bursts, supernovas, alternative gravitational theories, perturbations of collapsed objects, analog models, black hole thermodynamics, numerical relativity, gravitational lensing, large scale structure, observational cosmology, early universe models and cosmic microwave background anisotropies, inhomogeneous cosmology, inflation, global structure, singularities, chaos, Einstein-Maxwell systems, wormholes, exact solutions of Einstein's equations, gravitational waves, gravitational wave detectors and data analysis, precision gravitational measurements, quantum gravity and loop quantum gravity, quantum cosmology, strings and branes, self-gravitating systems, gamma ray astronomy, cosmic rays and the history of general relativity

    The International Handbook of Social Enterprise Law

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    This open-access book brings together international experts who shed new light on the status of social enterprises, benefit corporations and other purpose-driven companies. The respective chapters take a multidisciplinary approach (combining law, philosophy, history, sociology and economics) and provide valuable insights on fostering social entrepreneurship and advancing the common good. In recent years, we have witnessed a significant shift of how business activities are conducted, mainly through the rise of social enterprises. In an effort to target social problems at their roots, social entrepreneurs create organizations that bring transformative social changes by considering, among others, ethical, social, and environmental factors. A variety of social enterprise models are emerging internationally and are proving their vitality and importance. But what does the term “social enterprise” mean? What are its roots? And how does it work in practice within the legal framework of any country? This handbook attempts to answer these questions from a theoretical, historical, and comparative perspective, bringing together 44 contributions written by 71 expert researchers and practitioners in this field. The first part provides an overview of the social enterprise movement, its evolution, and the different forms entities can take to meet global challenges, overcoming the limits of what governments and states can do. The second part focuses on the emergence of benefit corporations and the growing importance of sustainability and societal values, while also analyzing their different legal forms and adaptation to their regulatory environment. In turn, the last part presents the status quo of purpose-driven companies in 36 developed and emerging economies worldwide. This handbook offers food for thought and guidance for everyone interested in this field. It will benefit practitioners and decision-makers involved in social and community organizations, as well as in international development and, more generally speaking, social sciences and economics

    Review of Particle Physics

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    The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,143 new measurements from 709 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 120 reviews are many that are new or heavily revised, including a new review on Machine Learning, and one on Spectroscopy of Light Meson Resonances. The Review is divided into two volumes. Volume 1 includes the Summary Tables and 97 review articles. Volume 2 consists of the Particle Listings and contains also 23 reviews that address specific aspects of the data presented in the Listings. The complete Review (both volumes) is published online on the website of the Particle Data Group (pdg.lbl.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Booklet with the Summary Tables and essential tables, figures, and equations from selected review articles is available in print, as a web version optimized for use on phones, and as an Android app.United States Department of Energy (DOE) DE-AC02-05CH11231government of Japan (Ministry of Education, Culture, Sports, Science and Technology)Istituto Nazionale di Fisica Nucleare (INFN)Physical Society of Japan (JPS)European Laboratory for Particle Physics (CERN)United States Department of Energy (DOE

    Multilingual practices and transnational alliances: German-language texts of post-Yugoslav migration

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    In der Dissertation wird die These vertreten, dass deutschsprachige Texte der postjugoslawischen Migration die Grenzen von zeitgenössischer deutscher Literatur erweitern. Sie hinterfragen die Vorstellung von unterschiedlichen, separaten und abgegrenzten Nationalliteraturen und erfordern einen komparativen und mehrsprachigen kritischen Ansatz. Um das zu verdeutlichen, werden in der Arbeit die Prosatexte von Peter Handke, Saša Stanišić, Marica Bodrožić und Alma Hadžibeganović untersucht. Die Analyse orientiert sich an Leslie A. Adelsons Studie The Turkish Turn in Contemporary German Literature (2005) und berücksichtigt die Mehrsprachigkeitstheorie sowie die Gendertheorie. Die Arbeit setzt sich außerdem mit dem „Eastern Turn“ in der deutschen Literatur auseinander. Der Zusammenbruch Jugoslawiens war ein Wendepunkt in der jüngeren europäischen Geschichte und führte zur gewaltsamen Teilung des Landes und zur Flucht vieler Menschen nach Westeuropa. Deutschsprachige Kommentatoren waren von Anfang an stark an den Debatten rund um den Krieg beteiligt. Die Dissertation vergleicht die umstrittenen Reiseberichte von Peter Handke aus den 1990er Jahren mit späteren Werken von Stanišić, Bodrožić und Hadžibeganović. Sprachlich heterogene Texte sind in der Lage, das essentialistische Verständnis von ethnischer, nationaler und kultureller Identität zu untergraben. Die Analyse offenbart die Machtstrukturen, die in der Sprache verwurzelt sind und die durch nicht-idiomatische Wendungen, Sprachfehler, Code-Switching, interlinguales Mischen, wörtliche Übersetzung, Interferenzen, referentielle Unbestimmtheit und einen strategischen Einsatz von Unsinn untergraben werden können. Die feministische Auseinandersetzung mit den Texten geht auf die Themen Geschlecht, Sexualität und Diskriminierung ein. Es wird gezeigt, dass die Texte patriarchale Gewalt bezeugen und sich der gewaltsamen Auslöschung solcher Erfahrungen aus dominanten Narrativen widersetzen.My thesis argues that German-language texts of post-Yugoslav migration expand our understanding of what constitutes German-language literature today, since they cannot be contained by scholarly paradigms rooted in notions of distinct national literatures and require a comparative and multilingual critical approach. In order to illustrate this, the thesis examines prose texts by Peter Handke, Saša Stanišić, Marica Bodrožić, and Alma Hadžibeganović. In methodological terms, I draw on Leslie A. Adelson’s ground-breaking study The Turkish Turn in Contemporary German Literature (2005). Combining approaches derived from theories of multilingualism and gender theory, I engage with the so-called ‘Eastern Turn’ in German literature. The collapse of Yugoslavia was a watershed moment in recent European history, which led to a violent partition of the country and resulted in high numbers of people fleeing the conflict to Western Europe, including Austria and Germany. German-language commentators were from the start heavily involved in debates surrounding the war. I start my discussion by looking at Peter Handke’s travelogues from the 1990s. Contrasting Handke’s essays with later works by Stanišić, Bodrožić, and Hadžibeganović, I explore the potential of linguistically heterogeneous texts to undermine essentialist understandings of ethnic, national, and cultural identity. I draw attention to power structures rooted in language which, in my opinion, can be subverted by non-idiomatic usage, linguistic errors, code-switching, interlingual mixing, literal translation, interferences, referential indeterminacy, and a strategic deployment of non-sense. Crucially, I combine my text analysis with a feminist response to the texts. I highlight the works’ engagement with gender, sexuality, and discrimination, and examine how they address the traumas suffered by diverse subjects in patriarchal society, and resist the violent erasure of such experiences from dominant narratives
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