TU Berlin Research Articles

3.L. Round table: Outcomes from a public debate on the future health priorities of the European Union

Abstract Objective and background In the run up to the European elections, the European Observatory on Health Systems and Policies facilitated a public debate on the future health priorities of the European Union. The purpose of the debate was to provide insights to the European Commission on the views of stakeholders and the public health community with regards to the future of the European Health Union (EHU). The EHU was established as a comprehensive health systems and public health response to the COVID-19 pandemic, featuring enhanced budgets, expanded mandates for existing bodies, and the introduction of new entities like the Health Emergency Response Authority (HERA) alongside new strategies. Methods The methodology for this comprehensive debate included workshops and plenary sessions at various conferences like the 2023 EUPHA conference in Dublin, an interactive webinar series, and a detailed stakeholder survey featuring both closed and open-ended questions. Data was collected and analyzed using diverse qualitative and quantitative tools, including AI-driven analysis of survey responses. Preliminary outcomes Preliminary analysis shows that participants actively engaged in the debate, and mostly expressed support for the EHU’s achievements to date. There was a consensus on the significant value added by the EHU, with many advocating for stronger EU action on a range of discussion topics. Stakeholders and the public health community could also relate to the discussion framework designed to guide the public debate, which included nine topics: enhancing health security; addressing the determinants of health through Health in All Policies and Health for All Policies; supporting health system transformation; enhancing the labour market for health and care workers; achieving universal health coverage; implementing digital solutions and AI; improving the performance and resilience of health systems; addressing long-term challenges, such as population ageing or climate change; and strengthening the EU’s global voice and leadership. The importance placed on these topics varied among different groups. Young participants prioritized climate-related actions, the public health community emphasized addressing the determinants of health, and policymakers concentrated on issues related to health system resilience, universal coverage, and transformation. Digital solutions and AI were recognized as crucial, but they were typically considered integral and transversal to broader issues rather than standalone priorities. The debate also surfaced priorities not initially included in the discussion framework, such as health promotion, prevention, and equity within health systems, which were repeatedly highlighted. Key messages • The debate on the EU’s future health priorities demonstrates that stakeholders and the public health community acknowledge the value of the EHU and would like to see further action to build on it. • Stakeholders and the public health community have formulated concrete action to take the EHU further. Speakers/Panelists Giada Scarpetti TU Berlin, Berlin, Germany Caroline Costongs EuroHealthNet, Brussels, Belgium Isabel de La Mata DG SANTE, European Commission, Luxembourg, Luxembourg

The impact of film cooling on the heat release within a rotating detonation combustor

Rotating detonation combustors establish a detonation wave that continuously circulates inside a small annulus. The presence of the detonation wave and the downstream oblique shock within the small annulus coupled with high mass flow induces a high heat load to the combustor wall. Preliminary analysis shows that for higher thermal power, internal air cooling alone is not sufficient to remove the heat out of the walls to maintain them below the maximum temperature of the metal. A possible solution is to use film cooling to reduce the heat flux to the combustor walls. One issue, though, is that the introduction of film cooling provides additional air into the system that can influence the combustion process as well as providing a location for secondary combustion.This paper represents the first investigation to study the secondary implications on combustion of using film cooling in a rotating detonation combustor. The TU Berlin RDC architecture was modified with the introduction of 480 film cooling holes placed in the oblique shock region. High fidelity LES investigations were performed for different coolant plenum pressures to show the benefits of using film cooling. However, due to the presence of unburnt fuel in this post-detonation region, the coolant can result in additional combustion leading to an increase in temperature near the wall. One the one hand, these secondary reactions result in an increase of the overall heat release increasing combustion efficiency, however this also results in higher temperatures and reduced film cooling effectiveness. A simulation performed with nitrogen as a coolant enabled the effects of increased mixing caused by the ejection of coolant gases to be separated from the additional heat release. The simulation with nitrogen shows a reduction of 88% in the local heat release in the post detonation region resulting in similar performance as the uncooled case and significantly cooler walls.

Development of a numerical model for floating Vertical Axis Wind Turbines

Vertical Axis Wind Turbines (VAWTs), which are primarily used in small-scale applications, such as in remote or urban areas, could be particularly promising for floating offshore wind projects, where they offer benefits like increased stability, lower maintenance costs, and the potential for closer spacing due to lesser aerodynamic wake effects. However, to be competitive with floating HAWTs, scaling up VAWTs size is an urgent necessity to facilitate large-scale industrialization. To achieve this goal, the development of tools capable of assessing VAWT performance in challenging offshore environments is crucial. This work aims to introduce a time domain model of a floating VAWT, developed within the Matlab-Simscape environment. The model comprises a floating platform, a wind turbine, and a mooring system. The aerodynamics is simulated using the Double Multiple Stream Tube method, which relies on Blade Element Momentum (BEM) theory. Hydrodynamics is modelled using WEC-Sim, a Simscape library developed by NREL and SANDIA. Among the main advantages of the model are the flexibility and low computational time. The article presents a case study involving a semi-sub foundation, the OC4-DeepCwind, supporting a Darrieus H-rotor VAWT. The results obtained are compared with those from QBlade Ocean, an open-source tool developed by TU Berlin, demonstrating a good agreement between the two codes.

Capturing differences in perception and aesthetic judgment of live or medially presented music: development of a self-report instrument.

Nowadays there are multiple ways to perceive music, from attending concerts (live) to listening to recorded music through headphones (medial). In between there are many mixed modes, such as playback performances. In empirical music research, this plurality of performance forms has so far found little recognition. Until now no measuring instrument has existed that could adequately capture the differences in perception and aesthetic judgment. The purpose of our empirical investigation was to capture all dimensions relevant to such an assessment. Using 3D-simulations and dynamic binaural synthesis, various live and medial situations were simulated. A qualitative survey was conducted at the Department of Audio Communication of the Technical University of Berlin (TU Berlin). With the help of the repertory grid technique, a data pool of approximately 400 attribute pairs was created and individual rating data were collected. Our first study served to create a semantic differential. In a second study, this semantic differential was evaluated. The development of the semantic differential was carried out by first using a mixed-method approach to qualitative analysis according to grounded theory. Thereafter, a principal component analysis reduced the attribute pairs to 67 items in four components. The semantic differential consists of items concerning acoustic, visual and audio-visual interaction as well as items with an overarching assessment of the stimuli. The evaluation study, comprising 45 participants (23 male and 22 female, M = 42.56 years, SD = 17.16) who rated 12 stimuli each, reduced the items to 61 and resulted in 18 subscales and nine single items. Because the survey used simulations, the social component may be underrepresented. Nevertheless, the questionnaire we created enables the evaluation of music performances (especially for classical concerts) in a new scope, thus opening many opportunities for further research. For example, in a live concert context, we observed not only that seating position influences the judgment of sound quality but also that visual elements influence immersion and felt affect. In the future, the differential could be reviewed for a larger stimulus pool, extended or used modularly for different research questions.

Development of a floating Vertical Axis Wind Turbine for the Mediterranean Sea

Differently from Horizontal Axis Wind Turbines (HAWTs), which are the reference technologies in the wind market for their reliability and maturity, Vertical Axis Wind Turbine (VAWT) applications are related to small-scale contexts, such as providing electricity in isolated areas or urban settings. Consequently, the capacity of VAWTs results significantly lower than the order of megawatts and does not exceed a few tens of kilowatts. A promising field of application for VAWTs is the floating offshore: among the main advantages there are an increased static stability, by placing the rotor-nacelle assembly (RNA) at the base of the VAWT and reduced operational and maintenance (O&M) costs. Moreover, the different wake dynamics allows to reduce the aerodynamic losses, allowing closer turbine installations. However, to be competitive with floating HAWTs, it is necessary to have numerical models for the analysis and simulation of multi-megawatt VAWTs. This paper aims to introduce a time domain model of a floating vertical axis wind turbine, developed within the Matlab-Simscape environment. The model comprises an aerodynamics module, based on Double Multiple Stream Tube theory while hydrodynamics is modelled using WEC-Sim. A case study, involving a Darrieus H-rotor VAWT tested in the Mediterranean Sea and supported by a semi-sub foundation, the OC4-DeepCwind, is introduced. The results obtained are compared with those from QBlade, an software developed by TU Berlin, demonstrating a good agreement between the two codes.

Crisis in the Culture Cabinet: Oswald Mathias Ungers, Colin Rowe and the Architekturtheorie Internationaler Kongress, TU Berlin, 1967

In December 1967 Oswald Mathias Ungers convened an international congress on “Architectural Theory” at the TU Berlin. The proceedings of this event were published in German one year later. Here, two excerpts from those proceedings are published in English for the first time: the opening address given by Ungers, and a lecture by Colin Rowe. Ungers’ welcoming remarks emphasise the importance of discussing architecture’s theoretical foundations in a time of mounting protests, major technological innovations and an intense phase of building activity in the city of Berlin. He openly questions whether historical insights remain relevant, or whether they burden contemporary practice. Rowe responds by dissecting architecture’s engagement with history. Rather than analysing the present situation, Rowe delves into modernism’s historical subconscious and demonstrates how the threat of crisis has been used to fuel two enduring myths: architects as saviours of society; and their buildings as an index of the times.

Evaluation of an automatic continuous high-lift system in a flight simulator study with airline pilots

AbstractIn the INTELWI LuFo research project, TU Berlin is investigating an automatic, continuously operating high-lift system for passenger aircraft. Today’s commercial aircraft operate the high-lift systems in fixed steps. Typically, five fixed steps result from the different requirements for take-off and landing. For each flap position, there is a speed of best glide. Since aircraft decelerate during landing, they usually fly outside the optimum point. This is improved by a continuous flap system, as it continuously adjusts the flap position depending on the current flight condition. Flight simulation studies allow modelling and evaluation of new flight control functions at an early stage of development. This paper evaluates the flight simulator study for the assessment of the Automatic Continuous Moving Slat/Flap System with a focus on the pilots’ assessment. Ten airline pilots took part in the study in the SEPHIR flight simulator at TU Berlin. The approach scenarios vary with regard to the energy content of the approach since the high-lift system influences the energy management. The evaluation is based on questionnaires answered by the pilots after each approach. The participating pilots particularly emphasised the reduction of the workload and the pleasant integration of the continuous flap function into the existing cockpit procedures. According to the participating pilots, there is potential for improvement and further scenarios to investigate the functions behaviour in the event of failures in systems that affect flap operation.

Characterization of refill region and mixing state immediately ahead of a hydrogen-air rotating detonation using LES

The extraordinary complexity of real Rotating Detonation Combustors (RDC) demands a deep knowledge of each phenomenon involved in the wave development and propagation. Since the reactants are typically injected separately, a key element for the combustor design optimization is understanding the refilling process and the reactants mixing. However, due to the harsh environment and high working frequencies of RDCs, the experimental diagnostics is usually limited, so high-fidelity simulations represent an essential tool to complement the measurements with detailed insights into the flow. In the present work, the non-premixed RDC installed at TU Berlin is simulated with the AVBP code by solving the fully-compressible, spatially-filtered reactive Navier-Stokes equations. The complete hydrogen and air injection system is included in the numerical model to accurately describe both the reactants mixing and the complex turbulent flow field in the resulting refill region. This study shows how both the injection system configuration and its transient interaction with the wave are fundamental for the reactants mixing, as they directly influence the refilled gas properties. Limiting the imbalances between the blockage dynamics of the fuel and oxidizer ducts and optimizing the fuel injectors can improve considerably the homogeneity of the fresh mixture, and consequently the leading shock strength and reasonably the pressure gain. In fact, the detailed analysis of the detonation front speed shown a higher instability near the chamber base for the periodic presence of unmixed reactants. Nevertheless, the unstable root of the front does not affect the whole wave speed, and remaining part propagates steadily thanks to the tangential mixture uniformity. Moreover, the local speed distribution does not appear directly related to the small-scale mixture properties, indicating a higher sensibility to the annulus curvature rather than to the local gas state.

Cross-country survey on the decommissioning of commercial nuclear reactors: status, insights, and knowledge gaps

Abstract. In the past, nuclear decommissioning has often been overlooked in the literature but will gain increasing relevance amongst researchers and industry alike as more and more nuclear power plants reach the end of their respective operational lifetimes (Laraia, 2018; Schneider et al., 2022). Existing research has up until recently focused mostly on technical challenges and liability issues of nuclear decommissioning, while analyses of the organization, regulation, and financing across various countries remain limited. In this cross-country survey paper, we compare the differing approaches for nuclear decommissioning organization in France, Germany, Sweden, Switzerland, the United Kingdom (UK), and the United States based on detailed country reports (Wimmers et al., 2023). We find that while, in theory, the countries follow the same standards, the implementation of responsibilities for nuclear decommissioning, financial liability, and oversight can differ quite significantly. For example, France is the only country in our survey to have implemented a centralized ownership of its nuclear reactor fleet, while all other countries have multiple operators that necessitate a different regulatory approach. In terms of financing, we observe that most countries follow a single approach, while Germany and the UK have different financing schemes depending on the nuclear reactors to be decommissioned (e.g., the former GDR reactors in East Germany and the UK's non-PWR (pressurized water reactor) legacy fleet). Based on our analysis, we derive several insights that merit further research on the topic of nuclear decommissioning. For example, the interlinkage between ownership and nuclear decommissioning production should be of particular interest, as we determine potential organizational models (following the system approach coined by Beckers et al., 2012) emerging through corporate actors aiming at the monetization of swift decommissioning – a trend that cannot be observed where the state is in full control. We further find that only limited information on decommissioning costs exists. Reducing knowledge gaps in this regard would help further understand and potentially identify potential challenges in nuclear decommissioning in advance before more nuclear reactors are shut down. Further insight into nuclear decommissioning fund adequacy and liability issues might be required to avoid the transfer of financial liabilities from private operators to taxpayers. Other research gaps include an analysis of market-based decommissioning approaches and possible supply chain bottlenecks and the subsequent investigation of efficiency through economies of scale, the limitation of nuclear decommissioning production from limited access to nuclear waste management facilities, and the influence of regulation, e.g., the number of overseeing regulators, on the production. The paper is based on a joint DFG project between TU Berlin and the University of Basel, entitled “Best practices for decommissioning nuclear power plants”.

Rethinking the role of efficiency for the decarbonization of buildings is essential

Antoine Levesque is a postdoctoral researcher at the Potsdam Institute for Climate Impact research (PIK), where he started working in 2014. His research focuses on the decarbonization of buildings, efficiency policies, and energy demand projections. Prior to the PIK, he worked at the International Institute for Applied Systems Analysis (IIASA) in Austria. He earned a PhD in economics at the Technische Universität Berlin (2021). Sebastian Osorio is a postdoc researcher at the PIK in the “Climate and Energy Policy” group. His work concentrates on applying energy systems models to evaluate low-carbon policies, with a clear focus on the EU power sector, the Emission Trading System, and their interaction with the decarbonization of buildings. Sebastian holds a PhD in information systems from the University of Lausanne in Switzerland. Sebastian Herkel is head of the “Energy Efficient Buildings” department at Fraunhofer Institute for Solar Energy Systems in Freiburg, Germany. He graduated from University of Karlsruhe with the degree of diplom-ingenieur in mechanical engineering. Sebastian Herkel is a researcher working in applied research in building energy performance and renewable energy systems. His focus is on integral energy concepts for buildings and neighborhoods, scientific analysis of building performance, and technologies for integration of renewable energy in buildings. Michael Pahle is head of the working group “Climate and Energy Policy” at the PIK. He holds a PhD in economics from TU Berlin. His research focuses on carbon pricing and more recently on climate policies for the buildings sector. He is co-principle investigator for Germany’s largest household panel on energy efficiency. Based on his research, Michael advises the German government and EU institutions. He is a member of the Global Climate Policy Partnership, a US-based global network of research institutions that helps major economies and businesses achieve ambitious climate goals. Antoine Levesque is a postdoctoral researcher at the Potsdam Institute for Climate Impact research (PIK), where he started working in 2014. His research focuses on the decarbonization of buildings, efficiency policies, and energy demand projections. Prior to the PIK, he worked at the International Institute for Applied Systems Analysis (IIASA) in Austria. He earned a PhD in economics at the Technische Universität Berlin (2021). Sebastian Osorio is a postdoc researcher at the PIK in the “Climate and Energy Policy” group. His work concentrates on applying energy systems models to evaluate low-carbon policies, with a clear focus on the EU power sector, the Emission Trading System, and their interaction with the decarbonization of buildings. Sebastian holds a PhD in information systems from the University of Lausanne in Switzerland. Sebastian Herkel is head of the “Energy Efficient Buildings” department at Fraunhofer Institute for Solar Energy Systems in Freiburg, Germany. He graduated from University of Karlsruhe with the degree of diplom-ingenieur in mechanical engineering. Sebastian Herkel is a researcher working in applied research in building energy performance and renewable energy systems. His focus is on integral energy concepts for buildings and neighborhoods, scientific analysis of building performance, and technologies for integration of renewable energy in buildings. Michael Pahle is head of the working group “Climate and Energy Policy” at the PIK. He holds a PhD in economics from TU Berlin. His research focuses on carbon pricing and more recently on climate policies for the buildings sector. He is co-principle investigator for Germany’s largest household panel on energy efficiency. Based on his research, Michael advises the German government and EU institutions. He is a member of the Global Climate Policy Partnership, a US-based global network of research institutions that helps major economies and businesses achieve ambitious climate goals.

Self-supervision assisted multimodal remote sensing image classification with coupled self-looping convolution networks

Recently, remote sensing community has seen a surge in the use of multimodal data for different tasks such as land cover classification, change detection and many more. However, handling multimodal data requires synergistically using the information from different sources. Currently, deep learning (DL) techniques are being religiously used in multimodal data fusion owing to their superior feature extraction capabilities. But, DL techniques have their share of challenges. Firstly, DL models are mostly constructed in the forward fashion limiting their feature extraction capability. Secondly, multimodal learning is generally addressed in a supervised setting, which leads to high labelled data requirement. Thirdly, the models generally handle each modality separately, thus preventing any cross-modal interaction. Hence, we propose a novel self-supervision oriented method of multimodal remote sensing data fusion. For effective cross-modal learning, our model solves a self-supervised auxiliary task to reconstruct input features of one modality from the extracted features of another modality, thus enabling more representative pre-fusion features. To counter the forward architecture, our model is composed of convolutions both in backward and forward directions, thus creating self-looping connections, leading to a self-correcting framework. To facilitate cross-modal communication, we have incorporated coupling across modality-specific extractors using shared parameters. We evaluate our approach on three remote sensing datasets, namely Houston 2013 and Houston 2018, which are HSI-LiDAR datasets and TU Berlin, which is an HSI-SAR dataset, where we achieve the respective accuracy of 93.08%, 84.59% and 73.21%, thus beating the state of the art by a minimum of 3.02%, 2.23% and 2.84%.

Berlin Pankow: a 15-min city for everyone? A case study combining accessibility, traffic noise, air pollution, and socio-structural data

Cars are dominating urban traffic in cities around the world, even though daily trips in many cities are often realized with active modes of transportation or public transport. Urban transport planning processes need to adapt to this reality and the necessity of climate change mitigation. Against this background, the research project “Mobility Reporting”, a joint undertaking of the district Pankow in Berlin and researchers from TU Berlin and TU Dresden, established a new, goal-driven, and participative planning process. The process identified local mobility as one of the central planning goals. The 15-min city (FMC) was thus adduced as a benchmark to analyze the district’s current mobility system and development potential. We conducted extensive accessibility analyses to examine the status quo concerning the FMC. We calculated travel times to essential destinations in daily life by foot, public transport, and car. This analysis was accompanied by a mixed online and paper–pencil survey conducted to evaluate the perceived accessibility of people in Pankow. The survey results shed light on the question of which walking time thresholds constitute a “very good” or “good” accessibility. Further analyses included environmental and social variables, allowing us to check whether areas with different accessibility levels also differ regarding the socio-economic characteristics of their inhabitants. For example, do socially advantaged neighborhoods have better local accessibility? Is there a trade-off between exposure to environmental pollution and good accessibility? With this contribution, we shed light on what an FMC is and ought to be. Results from the survey support the normative and political vision of the FMC. Pankow generally offers the merits of a walkable city, showing the expected travel time differences between the dense inner city and the outskirts. Socially disadvantaged neighborhoods are not consistently less accessible. However, there seems to be a trade-off between good accessibility (especially PT accessibility) and correlated externalities of transport, namely air pollution and noise.

Evaluation of a computational strategy to model transitory injection in rotating detonation combustors

The efficiency of a Rotating Detonation Combustor (RDC) strongly depends on the transitory injection process of fresh reactants in the combustion chamber: poor propellant mixing induces losses of combustion efficiency and consequently low detonation speed and unstable detonation propagation. Moreover, dilution of fresh reactants with burnt gases during injection increases the deflagration losses and decreases the pressure gain provided by the detonation. Numerical simulation can help design an efficient injector to reduce these losses. In this study, the modeling strategy previously proposed by ONERA to simulate the transitory injection process is applied to two existing experimental RDC (from Nagoya University and TU Berlin) and one in-development RDC from ONERA. The computational domain represents only one injection element, convenient for a parametric study at low computational cost. A custom initial condition is used to model the expansion process of burnt gases past a detonation wave. The initial condition parameters are discussed and a method is proposed to correctly set them. The TU Berlin RDC is studied in more detail: mixing efficiency up to 70% is obtained, and 5% of deflagration losses are estimated according to the assumptions of the simulation. Based on the numerical results, detonation speed was evaluated at various distances from the injection plane taking into account the heterogeneities of the fresh mixture. The measured speed lies within the predicted range.

Consideration of blue light hazard for virtual reality head mounted displays

Virtual reality (VR) introduces new approaches to creating virtual spaces for empirical studies and design processes. At the same time, VR platforms for research and education purposes in the field of daylight, such as one being built at TU Berlin, have to consider technical limitations. Besides the imperfections caused by simulation tools, VR head mounted displays (VR HMDs) bring additional shortcomings, one of the most obvious being the low maximum luminance compared to daylight. However, considering a typical viewing distance within VR HMDs is about 15 mm, and a usage duration can last up to 8 hours or more, concerns have arisen about the safety of displays with high luminance levels, particularly as a prototype claiming a maximum luminance of up to 6 000 cd/m2 has been introduced in the last years. Therefore, this paper compares the blue light hazard (BLH)-weighted radiances of VR HMDs to given exposure limits provided by the ICNIRP guidelines on limits of exposure to incoherent visible and infrared radiation and by the IEC 62471 (photobiological safety of lamps and lamp systems). The paper concludes with a statement on the BLH safety of VR HMDs.

Experimental assessment of a blended fatigue‐extreme controller employing trailing edge flaps

AbstractThis paper presents an experimental assessment of a blended fatigue‐extreme controller for load control employing trailing edge flaps on a lab‐scale wind turbine. The controller blends between a repetitive model predictive controller that targets fatigue loads and a dedicated extreme load controller, which consists of a simple on‐off load control strategy. The Fatigue controller uses the flapwise blade root bending moments of the three blades as input sensors. The Extreme controller additionally uses on‐blade angle of attack and velocity measurements as well as acceleration measurements to detect extreme events and to allow for a fast reaction. The experiments are conducted on the Berlin Research Turbine within the large wind tunnel of the TU Berlin. In order to reproduce test cases with deterministic extreme wind conditions that follow industry standards, the wind tunnel was redesigned. The analyzed test cases are extreme direction change, extreme coherent gust, extreme operating gust and extreme coherent gust with direction change. The test cases are analyzed by on‐blade angle of attack and velocity measurements. The load control performance of the Blended controller is compared to the pure fatigue oriented and the pure extreme load controller. The Blended controller achieves a maximum flapwise blade root bending moment reduction of 23%, which is comparable to the reduction achieved by the Extreme controller.

Baureka.online. Bauforschungsdaten digital vernetzt

Abstract baureka.online is a future web portal for the disciplines of building archaeology, architectural history, and historic preservation, which is currently being developed by the departments of architectural history at RWTH Aachen University and TU Berlin together with FIZ Karlsruhe – Leibniz Institute for Information Infrastructure. baureka.online is being designed in close partnership with its community to support their research data management while at the same time providing a platform that promotes exchange and networking within the disciplines. The team of baureka.online strives to offer the community long-term storage of research data and to make existing digital data discoverable through a single, accessible web portal. This service will not only enable the community to publish research data in a professional

Peer Review Statement

All papers published in this volume have been reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing Publishing.• Type of peer review: Double Anonymous• Conference submission management system: and paper submissions were received and handled via the conference management system ConfTool via contributions@sbe22.berlin. The initial review process was handled by the organizing committee under the supervision of Thomas Lützkendorf, Eike Roswag and Kim Gundlach. Further correspondence with the authors and reviewers was handled via the same email under the supervision of junior editors Lisa Kolkowski and Laura Wetzel.• Number of submissions received: 148• Number of submissions sent for review: 148• Number of submissions accepted: 142• Acceptance Rate (Submissions Accepted / Submissions Received × 100): 95.9• Average number of reviews per paper: 2• Total number of reviewers involved: 110• Contact person for queries: Name: Kim Gundlach Email: kim.gundlach@sbe22.berlin Affiliation: TU Berlin - constructive design and climate adaptive architecture

Real-world Laboratories in the Building Sector - Strategies for Transformation and Leap Innovations

The German Federal Environment Agency’s (UBA) goal is a climate-neutral and resource-conserving building sector by latest 2050. To reach these targets radical innovation is needed in all areas from material and construction development to the lifecycle-compatible design and adaptability of entire buildings. To accelerate this kind of radical innovation in various areas of the economy, real-world laboratories or regulatory sandboxes are already employed. These are physical or theoretical spaces where legislative frameworks in targeted areas can be lowered or abolished – allowing researchers and businesses to operate in less restrictive regulatory environments. Real-world laboratories have the potential to function as what Schaepke and Steltzer call transformative research – research that drives societal change processes by transforming knowledge. In the building sector, this approach can facilitate the necessary rapid development of new material and construction techniques, while simultaneously valuing the communicative exchange and transfer processes through which these advances can be societally co-produced, validated and legitimized. Planning culture is plagued by outdated and often counterintuitive norms and regulations, making it extremely difficult and economically unviable to apply experimental techniques, materials, and approaches in real-world projects. In this context, the Real-world Laboratories model has great potential to drive innovation in the planning disciplines through new inter- and transdisciplinary approaches that can integrate actors from civil society at an early stage, thus anchoring newly produced knowledge and innovation in society. Universities are well placed to initiate and drive such processes. Especially in architecture training, projects with a strong link to real contexts, actors, and materials allow learners to access new understandings of how planning processes can function. By working on eye level with clients, administrators, lawmakers and those from other disciplines, a new blueprint for real practice can be developed. This paper analyses the characteristics of the Real-world Laboratory method specifically for the building sector. Principles to successfully implement the method in practice are derived from a series of transdisciplinary projects undertaken as part of the research, practice and teaching at Natural Building Lab, TU Berlin.

Rethinking recurring waste flows: Creating material cycles by identifying new use cases for idle materials

This article presents Collaborative Material Workshops (CMW), aimed at identifying new use cases for commercial waste materials waste materials, which are continuously being generated and have valuable technical properties. With the assumption that such materials habe a high re-use potential, they are defined here as idle material streams. The objective of CMW is to identify scalable and feasible applications for the re-use of idle material streams and to communicate those results to commercial adopters. In cooperation with a local secondary material initiative and a project-related NGO, TU Berlin researchers have investigated the idle materials “printing blankets” and “aluminium composite panels” in two CMWs. Both materials combine valuable technical properties, a short use phase, and poor recyclability. The resulting two CMWs included 1) detailed background research, 2) physical material testing and 3) experimental CMW with material-related experts. With a special focus on the construction industry, the erticle discusses the barriers of identifying scalable and feasible new use cases for idle materials through the method of CMW.

Technical perspective: Physical layer resilience through deep learning in software radios

article Technical perspective: Physical layer resilience through deep learning in software radios Author: Falko Dressler TU Berlin, Germany TU Berlin, GermanyView Profile Authors Info & Claims Communications of the ACMVolume 65Issue 9September 2022 pp 82https://doi.org/10.1145/3547130Published:19 August 2022Publication History 0citation4,683DownloadsMetricsTotal Citations0Total Downloads4,683Last 12 Months4,683Last 6 weeks10 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteGet Access