148 research outputs found
Queerer Widerstand gegen Körpernormen
Alle Menschen werden zu jeder Zeit in zwei Geschlechter unterteilt, jedoch stellt diese Zu-schreibung keinen außerkulturellen Tatbestand dar, vielmehr sind Geschlecht, Körper, sexuelle Orientierung niemals unabhängig von Gesellschaft, Kultur, Epoche, politischem System. Allerdings gibt es Möglichkeiten und Strategien, Konventionen bezüglich Geschlecht, Sexua-lität und Begehren aufzubrechen. Mit „queer“ werden Normen insbesondere in Bezug auf „Heteronormativität“ und „Zweigeschlechtlichkeit“ thematisiert. Normierungen werden of-fengelegt und sollen destabilisiert werden. Queer zeigt auf, dass in der Gesellschaft Körper wahrgenommen, gelesen, eingeordnet und in Schubladen gesteckt werden. Darüber hinaus kritisiert queer klassische Identitätsmodelle, möchte Heterosexualität als wesentliche, gesell-schaftliche Norm aufdecken sowie klassische Mann-Frau / Homo-Hetero Dichotomien ver-wirren / verflüssigen und Lebensweisen jenseits davon denkbar machen. Eine breitere Sicht auf Sexualität und Begehren ermöglicht es, vielfältigere Lebensmodelle denkbar und möglich zu machen. Vorliegende Arbeit beschreibt queere Praktiken, welche (Körper)Normen entge-gen wirken. Dabei wird ebenso ein Fokus auf die Analysekategorie „Körper“ gelegt, welche im soziologischen Diskurs lange Zeit vernachlässigt wurde. Soziales soll nicht primär durch Soziales erklärt werden, vielmehr ist es wichtig, nicht selbstverständlich anzunehmen, dass „Körper“ ohnehin vorhanden sind. Demnach sollten Aspekte des Körpers in jeder sozialwis-senschaftlichen Analyse inbegriffen sein
Battery-Electric Powertrain System Design for the HorizonUAM Multirotor Air Taxi Concept
The work presented herein has been conducted within the DLR internal research
project HorizonUAM, which encompasses research within numerous areas related to
urban air mobility. One of the project goals was to develop a safe and
certifiable onboard system concept. This paper aims to present the conceptual
propulsion system architecture design for an all-electric battery-powered
multirotor electric Vertical Takeoff and Landing (eVTOL) vehicle. Therefore, a
conceptual design method was developed that provides a structured approach for
designing the safe multirotor propulsion architecture. Based on the concept of
operation the powertrain system was initially predefined, iteratively refined
based on the safety assessment and validated through component sizing and
simulations. The analysis was conducted within three system groups that were
developed in parallel: the drivetrain, the energy supply and the thermal
management system. The design process indicated that a pure quadcopter
propulsion system can merely be designed reasonably for meeting the European
Union Aviation Safety Agency (EASA) reliability specifications. By adding two
push propellers and implementing numerous safety as well as passivation
measures the reliability specifications defined by EASA could finally be
fulfilled. The subsequent system simulations also verified that the system
architecture is capable of meeting the requirements of the vehicle concept of
operations. However, further work is required to extend the safety analysis to
additional system components as the thermal management system or the battery
management system and to reduce propulsion system weight.Comment: 38 pages, 27 figures, CEAS Aeronautical Journal Special Issue
"HorizonUAM - Opportunities and Challenges of Urban Air Mobility
QAnon in Deutschland
QANON IN DEUTSCHLAND
QAnon in Deutschland / Dittrich, Miro (Rights reserved) ( -
Alternative Wirklichkeiten
ALTERNATIVE WIRKLICHKEITEN
Alternative Wirklichkeiten / Dittrich, Miro (Rights reserved) ( -
uncertainty and complexity in the context of COVID-19
Although the first coronavirus disease 2019 (COVID-19) wave has peaked with the second wave underway, the world is still struggling to manage potential systemic risks and unpredictability of the pandemic. A particular challenge is the “superspreading” of the virus, which starts abruptly, is difficult to predict, and can quickly escalate into medical and socio-economic emergencies that contribute to long-lasting crises challenging our current ways of life. In these uncertain times, organizations and societies worldwide are faced with the need to develop appropriate strategies and intervention portfolios that require fast understanding of the complex interdependencies in our world and rapid, flexible action to contain the spread of the virus as quickly as possible, thus preventing further disastrous consequences of the pandemic. We integrate perspectives from systems sciences, epidemiology, biology, social networks, and organizational research in the context of the superspreading phenomenon to understand the complex system of COVID-19 pandemic and develop suggestions for interventions aimed at rapid responses.publishersversionpublishe
An integrative systems approach identifies novel candidates in Marfan syndrome-related pathophysiology.
Marfan syndrome (MFS) is an autosomal dominant genetic disorder caused by mutations in the FBN1 gene. Although many peripheral tissues are affected, aortic complications, such as dilation, dissection and rupture, are the leading causes of MFS-related mortality. Aberrant TGF-beta signalling plays a major role in the pathophysiology of MFS. However, the contributing mechanisms are still poorly understood. Here, we aimed at identifying novel aorta-specific pathways involved in the pathophysiology of MFS. For this purpose, we employed the Fbn1 under-expressing mgR/mgR mouse model of MFS. We performed RNA-sequencing of aortic tissues of 9-week-old mgR/mgR mice compared with wild-type (WT) mice. With a false discovery rat
Let's agree to disagree: learning highly debatable multirater labelling
Classification and differentiation of small pathological objects may greatly
vary among human raters due to differences in training, expertise and their
consistency over time. In a radiological setting, objects commonly have high
within-class appearance variability whilst sharing certain characteristics
across different classes, making their distinction even more difficult. As an
example, markers of cerebral small vessel disease, such as enlarged
perivascular spaces (EPVS) and lacunes, can be very varied in their appearance
while exhibiting high inter-class similarity, making this task highly
challenging for human raters. In this work, we investigate joint models of
individual rater behaviour and multirater consensus in a deep learning setting,
and apply it to a brain lesion object-detection task. Results show that jointly
modelling both individual and consensus estimates leads to significant
improvements in performance when compared to directly predicting consensus
labels, while also allowing the characterization of human-rater consistency.Comment: Accepted at MICCAI 201
Can Urban Air Mobility become reality? Opportunities, challenges and selected research results
Urban Air Mobility (UAM) is a new air transportation system for passengers
and cargo in urban environments, enabled by new technologies and integrated
into multimodal transportation systems. The vision of UAM comprises the mass
use in urban and suburban environments, complementing existing transportation
systems and contributing to the decarbonization of the transport sector.
Initial attempts to create a market for urban air transportation in the last
century failed due to lack of profitability and community acceptance.
Technological advances in numerous fields over the past few decades have led to
a renewed interest in urban air transportation. UAM is expected to benefit
users and to also have a positive impact on the economy by creating new markets
and employment opportunities for manufacturing and operation of UAM vehicles
and the construction of related ground infrastructure. However, there are also
concerns about noise, safety and security, privacy and environmental impacts.
Therefore, the UAM system needs to be designed carefully to become safe,
affordable, accessible, environmentally friendly, economically viable and thus
sustainable. This paper provides an overview of selected key research topics
related to UAM and how the German Aerospace Center (DLR) contributed to this
research in the project "HorizonUAM - Urban Air Mobility Research at the German
Aerospace Center (DLR)". Selected research results that support the realization
of the UAM vision are briefly presented.Comment: 20 pages, 7 figures, project HorizonUA
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