1,394 research outputs found
Daniel Defoe, England’s Roads, and the Politics of Movement
Peer reviewedPostprin
LIPIcs, Volume 251, ITCS 2023, Complete Volume
LIPIcs, Volume 251, ITCS 2023, Complete Volum
Beam scanning by liquid-crystal biasing in a modified SIW structure
A fixed-frequency beam-scanning 1D antenna based on Liquid Crystals (LCs) is designed for application in 2D scanning with lateral alignment. The 2D array environment imposes full decoupling of adjacent 1D antennas, which often conflicts with the LC requirement of DC biasing: the proposed design accommodates both. The LC medium is placed inside a Substrate Integrated Waveguide (SIW) modified to work as a Groove Gap Waveguide, with radiating slots etched on the upper broad wall, that radiates as a Leaky-Wave Antenna (LWA). This allows effective application of the DC bias voltage needed for tuning the LCs. At the same time, the RF field remains laterally confined, enabling the possibility to lay several antennas in parallel and achieve 2D beam scanning. The design is validated by simulation employing the actual properties of a commercial LC medium
Crisis for Whom?
Children feature centrally in the ubiquitous narratives of ‘migration crises’. They are often depicted as essentially vulnerable and in need of special protections, or suspiciously adult-like and a threat to national borders. At the same time, many voices, experiences, and stories are rarely heard, especially about children on the move within the global South. This bilingual book, written in English and Spanish, challenges simplistic narratives to enrich perspectives and understanding. Drawing on collaborations between young (im)migrants, researchers, artists and activists, this collection asks new questions about how crises are produced, mobility is controlled, and childhood is conceptualised. Answers to these questions have profound implications for resources, infrastructures, and relationships of care. Authors offer insights from diverse global contexts, painting a rich and insightful tapestry about childhood (im)mobility. They stress that children are more than recipients of care and that the crises they face are multiple and stratifying, with long historical roots. Readers are invited to understand migration as an act of concern and love, and to attend to how the solidarities between citizens and ‘others’, adults and children, and between children, are understood and forged.La niñez ocupa un lugar central en las narrativas omnipresentes de las ""crisis migratorias"". A menudo ésta es representada como esencialmente vulnerable y necesitada de protección especial, como sospechosamente parecida a los adultos, o como una amenaza para las fronteras nacionales. Al mismo tiempo, existen muchas voces, experiencias e historias que rara vez son escuchadas, especialmente aquellas que hablan sobre las infancias en movimiento dentro del Sur global. 'Este libro bilingüe, escrito en inglés y español, desafía las narrativas simplistas para enriquecer nuestra perspectivas y comprensión. Basada en colaboraciones entre jóvenes (in)migrantes, investigadores, artistas y activistas, esta colección plantea nuevas preguntas sobre cómo se producen las crisis, cómo se controla la movilidad y cómo se conceptualiza a la infancia y la niñez. Las respuestas a estas preguntas tienen profundas implicaciones para la distribución de recursos, la infraestructura y las prácticas de cuidado. Las y los autores ofrecen perspectivas que surgen de diversos contextos globales, construyendo un rico y detallado tapiz sobre la (in)movilidad infantil. Destacan que niñas y niños son mucho más que simples receptores de cuidados y que las crisis que enfrentan son múltiples y estratificadas, con profundas raíces históricas. Se invita a las/os lectoras/es a entender la migración como un acto de concientización y amor, y a poner atención en cómo se entienden y forjan las solidaridades entre ciudadanos y aquellos que son percibidos como “otros”; entre adultos y niñas/os, y entre las/os niñas/os mismas/os
Digital agriculture: research, development and innovation in production chains.
Digital transformation in the field towards sustainable and smart agriculture. Digital agriculture: definitions and technologies. Agroenvironmental modeling and the digital transformation of agriculture. Geotechnologies in digital agriculture. Scientific computing in agriculture. Computer vision applied to agriculture. Technologies developed in precision agriculture. Information engineering: contributions to digital agriculture. DIPN: a dictionary of the internal proteins nanoenvironments and their potential for transformation into agricultural assets. Applications of bioinformatics in agriculture. Genomics applied to climate change: biotechnology for digital agriculture. Innovation ecosystem in agriculture: Embrapa?s evolution and contributions. The law related to the digitization of agriculture. Innovating communication in the age of digital agriculture. Driving forces for Brazilian agriculture in the next decade: implications for digital agriculture. Challenges, trends and opportunities in digital agriculture in Brazil
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Alternative Power: The Politics of Denmark\u27s Renewable Energy Transition
Global climate change is one of the defining political challenges and opportunities of the current era. Experts widely agree that technical means already exist for making the necessary transition from fossil fuels to renewable energy; the obstacles to doing so are primarily political. Careful observers also recognize that this period of transition creates an opening for political innovation and development. How can the political will be generated to take action to prevent climate catastrophe? And what will the process of transitioning mean for the political systems that have been built on cheap and abundant oil? Political scientists have largely ignored technological development as a lever for political development, or feared that technology could only be a force of domination. Yet renewable energy enthusiasts have often seen democratizing potential in these technologies. What can be accomplished politically by building a wind turbine? As countries like Denmark accumulate decades of experience with renewable energy, it is becoming possible to give such questions close empirical consideration. Denmark generates more of its electricity from renewable sources, and has been doing so longer, than any other industrialized nation, making it a uniquely valuable case for studying an advanced renewable energy transition in progress. This dissertation draws on novel qualitative and quantitative data to present the first comprehensive history of Denmark’s energy transition from its roots in the 1970s until the present, aiming to explain how this tiny nation emerged as the world’s leading wind power producer, and assess whether this process has yielded any democratic dividends. The multi-method analysis sheds new light on internal dynamics of Denmark’s energy transition, and, more generally, on late-stage evolutionary processes in mature technological systems. Many studies have shown an interest in the Danish case, which is usually presented as a relatively unqualified success story, but few have provided the empirical resolution to identify these complicating factors. This dissertation employs an explanatory strategy adapted from the ecological sciences to construct a more holistic and integrative portrait, resulting in a more thorough and accurate account of how Denmark jumped out to such a significant lead in the energy transition, and why that momentum might be flagging today, with implications for other countries hoping to chart a path toward a sustainable future
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Crisis for Whom? Critical global perspectives on childhood, care and migration
Children feature centrally in the ubiquitous narratives of ‘migration crises’. They are often depicted as essentially vulnerable and in need of special protections, or suspiciously adult-like and a threat to national borders. At the same time, many voices, experiences, and stories are rarely heard, especially about children on the move within the global South. This bilingual book, written in English and Spanish, challenges simplistic narratives to enrich perspectives and understanding. Drawing on collaborations between young (im)migrants, researchers, artists and activists, this collection asks new questions about how crises are produced, mobility is controlled, and childhood is conceptualised. Answers to these questions have profound implications for resources, infrastructures, and relationships of care. Authors offer insights from diverse global contexts, painting a rich and insightful tapestry about childhood (im)mobility. They stress that children are more than recipients of care and that the crises they face are multiple and stratifying, with long historical roots. Readers are invited to understand migration as an act of concern and love, and to attend to how the solidarities between citizens and ‘others’, adults and children, and between children, are understood and forged.La niñez ocupa un lugar central en las narrativas omnipresentes de las "crisis migratorias". A menudo ésta es representada como esencialmente vulnerable y necesitada de protección especial, como sospechosamente parecida a los adultos, o como una amenaza para las fronteras nacionales. Al mismo tiempo, existen muchas voces, experiencias e historias que rara vez son escuchadas, especialmente aquellas que hablan sobre las infancias en movimiento dentro del Sur global. 'Este libro bilingüe, escrito en inglés y español, desafía las narrativas simplistas para enriquecer nuestra perspectivas y comprensión. Basada en colaboraciones entre jóvenes (in)migrantes, investigadores, artistas y activistas, esta colección plantea nuevas preguntas sobre cómo se producen las crisis, cómo se controla la movilidad y cómo se conceptualiza a la infancia y la niñez. Las respuestas a estas preguntas tienen profundas implicaciones para la distribución de recursos, la infraestructura y las prácticas de cuidado. Las y los autores ofrecen perspectivas que surgen de diversos contextos globales, construyendo un rico y detallado tapiz sobre la (in)movilidad infantil. Destacan que niñas y niños son mucho más que simples receptores de cuidados y que las crisis que enfrentan son múltiples y estratificadas, con profundas raíces históricas. Se invita a las/os lectoras/es a entender la migración como un acto de concientización y amor, y a poner atención en cómo se entienden y forjan las solidaridades entre ciudadanos y aquellos que son percibidos como “otros”; entre adultos y niñas/os, y entre las/os niñas/os mismas/os
The European Experience: A Multi-Perspective History of Modern Europe, 1500–2000
The European Experience brings together the expertise of nearly a hundred historians from eight European universities to internationalise and diversify the study of modern European history, exploring a grand sweep of time from 1500 to 2000. Offering a valuable corrective to the Anglocentric narratives of previous English-language textbooks, scholars from all over Europe have pooled their knowledge on comparative themes such as identities, cultural encounters, power and citizenship, and economic development to reflect the complexity and heterogeneous nature of the European experience. Rather than another grand narrative, the international author teams offer a multifaceted and rich perspective on the history of the continent of the past 500 years. Each major theme is dissected through three chronological sub-chapters, revealing how major social, political and historical trends manifested themselves in different European settings during the early modern (1500–1800), modern (1800–1900) and contemporary period (1900–2000). This resource is of utmost relevance to today’s history students in the light of ongoing internationalisation strategies for higher education curricula, as it delivers one of the first multi-perspective and truly ‘European’ analyses of the continent’s past. Beyond the provision of historical content, this textbook equips students with the intellectual tools to interrogate prevailing accounts of European history, and enables them to seek out additional perspectives in a bid to further enrich the discipline
Resilient and Scalable Forwarding for Software-Defined Networks with P4-Programmable Switches
Traditional networking devices support only fixed features and limited configurability.
Network softwarization leverages programmable software and hardware platforms to remove those limitations.
In this context the concept of programmable data planes allows directly to program the packet processing pipeline of networking devices and create custom control plane algorithms.
This flexibility enables the design of novel networking mechanisms where the status quo struggles to meet high demands of next-generation networks like 5G, Internet of Things, cloud computing, and industry 4.0.
P4 is the most popular technology to implement programmable data planes.
However, programmable data planes, and in particular, the P4 technology, emerged only recently.
Thus, P4 support for some well-established networking concepts is still lacking and several issues remain unsolved due to the different characteristics of programmable data planes in comparison to traditional networking.
The research of this thesis focuses on two open issues of programmable data planes.
First, it develops resilient and efficient forwarding mechanisms for the P4 data plane as there are no satisfying state of the art best practices yet.
Second, it enables BIER in high-performance P4 data planes.
BIER is a novel, scalable, and efficient transport mechanism for IP multicast traffic which has only very limited support of high-performance forwarding platforms yet.
The main results of this thesis are published as 8 peer-reviewed and one post-publication peer-reviewed publication. The results cover the development of suitable resilience mechanisms for P4 data planes, the development and implementation of resilient BIER forwarding in P4, and the extensive evaluations of all developed and implemented mechanisms. Furthermore, the results contain a comprehensive P4 literature study.
Two more peer-reviewed papers contain additional content that is not directly related to the main results.
They implement congestion avoidance mechanisms in P4 and develop a scheduling concept to find cost-optimized load schedules based on day-ahead forecasts
OIKO-LOGIC IN LITERATURE
My study utilizes ecocriticism, eco-Marxism, and posthumanism to discover how the sympathetic practices of both reading and ecology provide us with what I call an oiko-logic. Specifically, I read Jonathan Swift’s Gulliver’s Travels, Laurence Sterne’s Tristram Shandy, Herman Melville’s Moby-Dick, and John Williams’ Butcher’s Crossing. In Gulliver’s Travels we see Gulliver as an ecological threat in every journey, and Swift says that this is because we forget ourselves and deliberately choose to not attune—sometimes even choosing destruction. For Swift, we bungle things no matter which system we try, and we create degenerative devolution despite the fact that we can help. Sterne’s fundamental ecological question is how people and the entities they dwell with (living and non-living) have real interactions—which means considering domestication’s bilateralism. Humans and animals can interact beneficently in Sterne’s work, and individualism becomes oiko-logically untenable since calculations of value and affordability must include others. In Moby-Dick the whale’s values are more moral than Ahab’s, and through comparisons available in the text of Moby-Dick we begin to see inside Melville’s eco-values to the impact of a heroic animal agency as Moby-Dick follows his values—while our conscience hangs in crooked corridors. In Butcher’s Crossing and representations of buffalo slaughter, correlative human-animal experiences of thirst, ferality, and slaughter are contrasted with western bison hunters on the plains and aliens in such a way that the alien is between humanity and itself. In oiko-logic, literature and ecology share a sympathetic practice similar to the Native American sensibility of Mitakuye Oyasin: “all my relations.
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