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This dissertation proposes a cross-layer framework able to synergistically optimize resilience and power consumption of processor-based systems. It is composed of three building blocks: SWIELD multimodal flip-flop (FF), System Operation Management Unit (SOMU) and Framework Function Library (FFL). Implementation of the building blocks is performed at circuit, architecture and software layer of the system stack respectively. The SWIELD FF can be configured to operate as a regular flip-flop or as an enhanced flip-flop for protection against timing/radiation-induced faults. It is necessary to perform replacement of selected timing-critical flip-flops in a system with SWIELD FFs during design time. When the system is active, the SWIELD FFs operation mode is dynamically managed by the SOMU controller according to the current requirements. Finally, the FFL contains a set of software procedures that greatly simplify framework utilization. By relying on the framework, a system can intelligently interchange techniques such as Adaptive Voltage/Frequency Scaling, selective Triple Modular Redundancy and clock gating during operation. Additionally, a simple and convenient strategy for integration of the framework in processor-based systems is also presented. A key feature of the proposed strategy is to determine the number of SWIELD FFs to be inserted in a system. Using this strategy, the framework was successfully embedded in instances of both single- and multicore systems. Various experiments were conducted to evaluate the framework influence on the target systems with respect to resilience and power consumption. At expense of about 1% area overhead, the framework is able to preserve performance and to reduce power consumption up to 15%, depending on the number of SWIELD FFs in the system. Furthermore, it was also shown that under certain conditions, the framework can provide failure-free system operation.
Die vorliegende Publikation stellt die Ergebnisse von neun Studierendenarbeiten aus dem Mastermodul „Prozess und Steuerung“ zusammen, welches im Wintersemester 2021 am Fachgebiet Stadtmanagement der BTU Cottbus-Senftenberg angeboten wurde.
Unter der Deutschen EU-Ratspräsidentschaft wurde Ende November 2020 die Neue Leipzig-Charta als politisches und strategisches Dokument der Stadtentwicklung verabschiedet. Der Fokus liegt auf der transformativen Kraft handlungsfähiger Städte und fordert eine integrierte Stadtentwicklung, die dem Gemeinwohl verpflichtet ist. Zeitgleich stehen unter Covid-19 Präventionsmaßnahmen Akteur*innen und Instrumente der Stadtplanung einer wachsenden Diskrepanz zwischen normativen Konzepten einer Stadt und den nüchternen Alltagserfahrungen des urbanen Lebens gegenüber. In diesem Mastermodul untersuchten die Studierenden, welche Bedeutung und Auswirkungen die neuen Bedingungen und Alltagserfahrungen auf die Stadtplanung haben, außerdem inwieweit die Neue Leipzig-Charta diese Zustände adressiert. Ihre Arbeiten werfen ein verändertes Licht auf stadtplanerische Prinzipien und Konzepte, und diskutieren, was das langfristige strategische Denken in Zeiten von zunehmenden Unsicherheiten machen kann.
Climate change is one of the most pressing global challenges of the 21st Century. According to the United Nations, Vietnam with a coastline of more than 3600 km, is one of top 30 countries facing an “extremely high risk” from the impacts of climate change over the next 30 years. Research undertaken in Vietnam indicates that significant impacts due to sea level rise have already occurred, resulting in the increased unpredictability and severity of coastal problems, such as land-loss, flooding of low lying coastal areas, accelerated coastal erosion, all which directly impacts the local population residing in the coastal region. Moreover, due to sea level rise, the amount of land available for development along the coast and further highly populated low lying land such as in the Mekong Delta will decrease. Facing these risks requires government and experts to urgently find effective solutions to ensure adequate space for residents in low-lying coastal areas. The current solutions being discussed are not only traditionally raising accommodation or resettlement to higher areas, or “living with the water”, but also a view of “living on the water”. In this case, floating architecture is seen as an effective solution for many low lying coastal areas all over the world and in Vietnam in particular.
In fact that, Vietnam has a long history of floating settlements with a large number of floating villages. However, these floating villages are built with dilapidated houses which are built on rafts, and most floating settlements have been threaten by several socio-cultural, economic and environmental factors. Therefore, the main purpose of the research is to upgrade floating architecture in Vietnam to a higher level and standard adapting to climate change and social change. The research will provide methods and innovation tools to bridge the gap between existing floating house, as an unsafe and inconvenient type of accommodation, and contemporary housing needs in water bodies to allow for a fit between traditional designing experience and contemporary innovation of floating architecture.
Based on lessons and innovations of floating architecture development in other countries, as well as based on the traditional experience and vernacular architecture of floating houses in Vietnam, the research will create theoretical frameworks, guidelines and design criteria for sustainable floating houses and floating settlements. The sustainable concept focuses on both sustainability and affordability when using innovative floating structures and materials in accordance with the local climatic and social condition of Vietnam, as well as adapting to climate change and sea level rise. The study will not only protect existing floating villages, preserve aquatic lifestyle that ensure a stable and permanent living on the water for inhabitants, but also improve floating architecture for modern demands and resilient living adapting to social change and climate change in Vietnam.