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  • Political Science  (6)
  • Chemistry
  • bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues
  • Logos Verlag Berlin
  • English  (9)
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  • 1
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    Study of an alternative phase field model for low interfacial energy in elastic solids (2022)
    Logos Verlag Berlin | Logos Verlag Berlin
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    Publication Date: 2024-04-05
    Description: In 2005, the hybrid model was published by Prof. H.-D. Alber and Prof. P. Zhu as an alternative to the Allen-Cahn model for the description of phase field transformations. With low interfacial energy, it is more efficient, since the resolution of the diffuse interface is numerically broader for the same solution accuracy and allows coarser meshing. The solutions of both models are associated with energy minimisation and in this work the error terms introduced in the earlier publications are discussed and documented using one and two dimensional numerical simulations. In the last part of this book, phase field problems, initially not coupled with material equations, are combined with linear elasticity and, after simple introductory examples, a growing martensitic inclusion is simulated and compared with literature data. In addition to the confirmed numerical advantage, another phenomenon not previously described in the literature is found: with the hybrid model, in contrast to the examples calculated with the Allen-Cahn model, an inclusion driven mainly by curvature energy does not disappear completely. The opposite problem prevents inclusions from growing from very small initial configurations, but this fact can be remedied by a very finely chosen diffuse interface width and by analysing and adjusting the terms that generate the modelling errors. The last example shows that the hybrid model can be used with numerical advantages despite the above mentioned peculiarities.
    Keywords: Science ; Chemistry ; Mathematics ; Science ; Physics ; thema EDItEUR::P Mathematics and Science::PN Chemistry ; thema EDItEUR::P Mathematics and Science::PB Mathematics ; thema EDItEUR::P Mathematics and Science::PH Physics
    Language: English
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  • 2
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    Drifting Apart of Transatlantic Security (2022)
    Logos Verlag Berlin | Logos Verlag Berlin
    Details
    Publication Date: 2024-04-04
    Description: For the first time, this book examines the comparative impact of the Obama administration on the NATO and defense policies of European allies. Germany, Poland and Turkey serve as case studies to evaluate American policies vis-à-vis NATO Europe. All three are representative for the Alliance in various ways. Thus, the results of this book offer an outlook for NATO Europe and the Alliance as a whole. Despite the fact that all three countries are highly dependent on American security guarantees in theory and practice, the results of this study reveal different national responses. Indeed, the book demonstrates multi-, bi-, and unilateralization attempts in reaction to US engagement in and vis-à-vis NATO Europe. Hence, a better understanding of current developments within the Alliance as well as the basis for the future debate about the transatlantic organisation are provided. Aylin Matlé works for the Konrad-Adenauer-Stiftung e.V.; most recently, she worked for the foundation's Israel office in Jerusalem. Previously, Aylin Matlé was a research associate at the chair of international relations and European politics at the Martin-Luther-Universität Halle-Wittenberg.
    Keywords: History ; Military ; Political Science ; thema EDItEUR::N History and Archaeology::NH History::NHW Military history ; thema EDItEUR::J Society and Social Sciences::JP Politics and government
    Language: English
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  • 3
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    Leben zwischen Dreck und Drogen (2022)
    Logos Verlag Berlin | Logos Verlag Berlin
    Details
    Publication Date: 2023-02-01
    Description: Das Kottbusser Tor in Berlin-Kreuzberg wird sowohl wegen seiner Vielfalt und seines Community-Aktivismus gefeiert als auch wegen Schmutz, Drogen und Gefahr gemieden. Wie die Bewohner*innen ihren Kiez sehen, wird oft in Anekdoten und politischen Statements dargestellt, aber kaum systematisch untersucht. Deshalb hat ein Forschungsteam des Georg-Simmel-Zentrums für Metropolenforschung an der Humboldt-Universität im Auftrag des Bezirksamtes Friedrichshain-Kreuzberg an Haustüren geklingelt und nachgefragt: Wodurch fühlen sich die Menschen in ihrem Wohngebiet unsicher? Würden sie denken, dass mehr Polizeipräsenz die Un-/Sicherheit erhöhen würde? Was erwarten sie von anderen Anwohner*innen, und inwiefern tragen solche Erwartungen zum Gefühl der Sicherheit bei? Trägt die alltägliche Nutzung der Nachbarschaft zum Sicherheitsgefühl bei? Dieses kleine Buch stellt die Ergebnisse der Studie vor. Es engagiert sich kritisch mit der berühmten These, dass "Augen auf der Straße" soziale Kontrolle und damit mehr subjektive Sicherheit erzeugen, und untersucht die Relevanz von Dunkelheit, Dreck und Drogen sowie von Achtsamkeit, Gemeinsamkeit und Zugehörigkeit. Die Studie zeigt, dass das Sicherheitsempfinden in einer städtischen Nachbarschaft von vertrauter Öffentlichkeit abhängt. Sie zeichnet sich dadurch aus, dass Menschen einschätzen können, was sie um sich herum sehen (eine Fähigkeit, die bei wiederholter Nutzung von Orten zunimmt) und darauf vertrauen, dass andere Bewohner*innen ihnen den Rücken freihalten. Dabei muss den Menschen nicht immer alles gefallen, was sie an ihrem Wohnort erfahren. Aber in dichten Stadtgebieten mit hoher Diversität profitieren die Bewohner*innen von gegenseitigem Wiedererkennen, wenn es um das Sicherheitsempfinden geht.
    Keywords: Social Science ; Statistics ; Social Science ; Political Science ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHB Sociology::JHBC Social research & statistics ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general ; bic Book Industry Communication::J Society & social sciences::JP Politics & government
    Language: English
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  • 4
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    The Occurrence of Separate Opinions at the Federal Constitutional Court (2022)
    Logos Verlag Berlin | Logos Verlag Berlin
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    Publication Date: 2023-02-02
    Description: Courts with the right to constitutional review exert considerable power in a political system. However, especially for Kelsenian constitutional courts there are hardly any large-N studies. This is mainly due to a lack of data. For the German Federal Constitutional Court, this gap has been closed by building a novel database, the development of which is depicted in this book. Employing data from this database, the occurrence of separate opinions in general and their different types in particular are analyzed. The book introduces a new, universal theory that reconciles and expands existing explanations. In a second step, the theory is applied to the German Federal Constitutional Court. It can be proven that one factor that has been neglected so far plays a decisive role: The judges' behavior depends on the profession they pursue after their time in office. Moreover, the study shows that -- contrary to the common literature -- it is not mainly the topic that determines a case's conflict potential but rather the number of issues a decision has to address.
    Keywords: Law ; Political Science ; bic Book Industry Communication::L Law::LA Jurisprudence & general issues ; bic Book Industry Communication::J Society & social sciences::JP Politics & government
    Language: English
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  • 5
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    The World We Want to Live in (2022)
    Logos Verlag Berlin | Logos Verlag Berlin
    Details
    Publication Date: 2022-09-16
    Description: Digitalisation, digital networks, and artificial intelligence are fundamentally changing our lives! We must understand the various developments and assess how they interact and how they affect our regular, analogue lives. What are the consequences of such changes for me personally and for our society? Digital networks and artificial intelligence are seminal innovations that are going to permeate all areas of society and trigger a comprehensive, disruptive structural change that will evoke numerous new advances in research and development in the coming years. Even though there are numerous books on this subject matter, most of them cover only specific aspects of the profound and multifaceted effects of the digital transformation. An overarching assessment is missing. In 2016, the Federation of German Scientists (VDW) has founded a study group to assess the technological impacts of digitalisation holistically. Now we present this compendium to you. We address the interrelations and feedbacks of digital innovation on policy, law, economics, science, and society from various scientific perspectives. Please consider this book as an invitation to contemplate with other people and with us, what kind of world we want to live in!
    Keywords: Digitalisation ; Digital Networks ; Artificial Intelligence ; Transhumanism ; Industry 4.0 ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFD Media studies ; bic Book Industry Communication::U Computing & information technology::UD Digital lifestyle ; bic Book Industry Communication::K Economics, finance, business & management::KJ Business & management::KJG Business ethics & social responsibility ; bic Book Industry Communication::K Economics, finance, business & management::KN Industry & industrial studies ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::U Computing & information technology::UK Computer hardware
    Language: English
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  • 6
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    Modeling of Moving Sound Sources Based on Array Measurements (2022)
    Logos Verlag Berlin | Logos Verlag Berlin
    Details
    Publication Date: 2024-04-05
    Description: When auralizing moving sound sources in Virtual Reality (VR) environments, the two main input parameters are the location and radiated signal of the source. An array measurement-based model is developed to characterize moving sound sources regarding the two parameters in this thesis. This model utilizes beamforming, i.e. delay and sum beamforming (DSB) and compressive beamforming (CB) to obtain the locations and signals of moving sound sources. A spiral and a pseudorandom microphone array are designed for DSB and CB, respectively, to yield good localization ability and meet the requirement of CB. The de-Dopplerization technique is incorporated in the time-domain DSB to address moving source problems. Time-domain transfer functions (TDTFs) are calculated in terms of the spatial locations within the steering window of the moving source. TDTFs then form the sensing matrix of CB, thus allowing CB to solve moving source problem. DSB and CB are further extended to localize moving sound sources, and the reconstructed signals from the beamforming outputs are investigated to obtain the source signals. Moreover, localization and signal reconstruction are evaluated through varying parameters in the beamforming procedures, i.e. steering position, steering window length and source speed for a moving periodic signal using DSB, and regularization parameter, signal to noise ratio (SNR), steering window length, source speed, array to source motion trajectory and mismatch for a moving engine signal using CB. The parameter studies show guidelines of parameter selection based on the given situations in this thesis for modeling moving source using beamforming. Both algorithms are able to reconstruct the moving signals in the given scenarios. Although CB outperforms DSB in terms of signal reconstruction under particular conditions, the localization abilities of the two algorithms are quite similar. The practicability of the model has been applied on pass-by measurements of a moving loudspeaker using the designed arrays, and the results can match the conclusions drawn above from simulations. Finally, a framework on how to apply the model for moving source auralization is proposed.
    Keywords: Science ; Chemistry ; Technology & Engineering ; Construction ; Technology & Engineering ; thema EDItEUR::P Mathematics and Science::PN Chemistry ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building::TNK Building construction and materials ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 7
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    Drifting Apart of Transatlantic Security (2021)
    Logos Verlag Berlin | Logos Verlag Berlin
    Details
    Publication Date: 2024-04-04
    Description: For the first time, this book examines the comparative impact of the Obama administration on the NATO and defense policies of European allies. Germany, Poland and Turkey serve as case studies to evaluate American policies vis-à-vis NATO Europe. All three are representative for the Alliance in various ways. Thus, the results of this book offer an outlook for NATO Europe and the Alliance as a whole. Despite the fact that all three countries are highly dependent on American security guarantees in theory and practice, the results of this study reveal different national responses. Indeed, the book demonstrates multi-, bi-, and unilateralization attempts in reaction to US engagement in and vis-à-vis NATO Europe. Hence, a better understanding of current developments within the Alliance as well as the basis for the future debate about the transatlantic organisation are provided. Aylin Matlé works for the Konrad-Adenauer-Stiftung e.V.; most recently, she worked for the foundation's Israel office in Jerusalem. Previously, Aylin Matlé was a research associate at the chair of international relations and European politics at the Martin-Luther-Universität Halle-Wittenberg.
    Keywords: History ; Military ; Political Science ; thema EDItEUR::N History and Archaeology::NH History::NHW Military history ; thema EDItEUR::J Society and Social Sciences::JP Politics and government
    Language: English
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  • 8
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    Separatism and Regionalism in Modern Europe (2021)
    Logos Verlag Berlin | Logos Verlag Berlin
    Details
    Publication Date: 2023-02-01
    Description: The end of the Cold War opened a Pandora's box of regionalism and separatism across Europe, and today they once again pose a significant threat to the territorial and political integrity of the traditional nation-states. Yet, the existence of various subnational groups is inevitable in democratic states. The scope of separatism and regionalism in Europe is quite wide. It includes de facto states, such as Kosovo, Transnistria, and North Cyprus; strong separatist movements aimed at achieving independence, like Catalonia, Basque Country, Scotland, Flanders, and Faroe Islands; strong movements aimed at achieving a more regional autonomy, for example, Lombardy and Veneto; and weaker regional movements, which could potentially escalate in the future, such as Transylvania in Romania or Vojvodina in Serbia. This edited volume tackles all the above-mentioned regional moments and even includes Greenland as a bonus. It brings together seventeen prominent scholars from a wide range of European and North American academic institutions who compiled ten chapters to shed light on the revival of regionalism and separatism via a thorough evaluation and analysis of some of the most important current separatist and regionalist/autonomist movements across modern Europe. Chris Kostov is an Adjunct Professor in the School of International Relations at IE University Madrid, Spain. He earned his PhD in History and Canadian Studies from the University of Ottawa, Canada. His main academic interests include Balkan and modern European nationalism and Communist repressions in Cold War Eastern Europe.
    Keywords: Social Science ; Political Science ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general ; bic Book Industry Communication::J Society & social sciences::JP Politics & government
    Language: English
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  • 9
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    Leben zwischen Dreck und Drogen (2021)
    Logos Verlag Berlin | Logos Verlag Berlin
    Details
    Publication Date: 2024-03-29
    Description: Das Kottbusser Tor in Berlin-Kreuzberg wird sowohl wegen seiner Vielfalt und seines Community-Aktivismus gefeiert als auch wegen Schmutz, Drogen und Gefahr gemieden. Wie die Bewohner*innen ihren Kiez sehen, wird oft in Anekdoten und politischen Statements dargestellt, aber kaum systematisch untersucht. Deshalb hat ein Forschungsteam des Georg-Simmel-Zentrums für Metropolenforschung an der Humboldt-Universität im Auftrag des Bezirksamtes Friedrichshain-Kreuzberg an Haustüren geklingelt und nachgefragt: Wodurch fühlen sich die Menschen in ihrem Wohngebiet unsicher? Würden sie denken, dass mehr Polizeipräsenz die Un-/Sicherheit erhöhen würde? Was erwarten sie von anderen Anwohner*innen, und inwiefern tragen solche Erwartungen zum Gefühl der Sicherheit bei? Trägt die alltägliche Nutzung der Nachbarschaft zum Sicherheitsgefühl bei? Dieses kleine Buch stellt die Ergebnisse der Studie vor. Es engagiert sich kritisch mit der berühmten These, dass "Augen auf der Straße" soziale Kontrolle und damit mehr subjektive Sicherheit erzeugen, und untersucht die Relevanz von Dunkelheit, Dreck und Drogen sowie von Achtsamkeit, Gemeinsamkeit und Zugehörigkeit. Die Studie zeigt, dass das Sicherheitsempfinden in einer städtischen Nachbarschaft von vertrauter Öffentlichkeit abhängt. Sie zeichnet sich dadurch aus, dass Menschen einschätzen können, was sie um sich herum sehen (eine Fähigkeit, die bei wiederholter Nutzung von Orten zunimmt) und darauf vertrauen, dass andere Bewohner*innen ihnen den Rücken freihalten. Dabei muss den Menschen nicht immer alles gefallen, was sie an ihrem Wohnort erfahren. Aber in dichten Stadtgebieten mit hoher Diversität profitieren die Bewohner*innen von gegenseitigem Wiedererkennen, wenn es um das Sicherheitsempfinden geht.
    Keywords: Social Science ; Statistics ; Social Science ; Political Science ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHB Sociology::JHBC Social research and statistics ; thema EDItEUR::J Society and Social Sciences::JB Society and culture: general ; thema EDItEUR::J Society and Social Sciences::JP Politics and government
    Language: English
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