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In this volume, colleagues and friends of Prof. Dr.-Ing. Robert Stieglitz, who died suddenly and unexpectedly on 6 December 2023, pay tribute to his life and his extraordinary achievements as an internationally recognised scientist. Prof. Stieglitz's profound view on fusion research, nuclear technology and renewable energy was appreciated worldwide. The contributions in this volume cover all these areas while reflecting his inspirational influence on the authors.

The Validation and Evaluation sub-project of the eCoMove project groups a number of complementary activities including the core tasks to validate the functionality of the eCoMove system and applications, and to evaluate if the aimed reduction of 20% overall energy consumption can be achieved. Besides technical requirements a validation process also has to consider non-technical requirements of potential users of the eCoMove system which were in the focus of research for this deliverable.

Includes bibliographic references and indexes. ; Bd. 1. Geologie der Steinkohlen Deutschland's und anderer Länder Europa's / herausgegeben von H.B. Geinitz -- Bd. 2. Geschichte, Statistik und Technik der Steinkohlen Deutschland's und anderer Länder Europa's / von H. Fleck und E. Hartig -- [Bd. 3]. Atlas zur Geologie der Steinkohlen Deutschland's und anderer Länder Europa's / von H.B. Geinitz. ; Mode of access: Internet.

"Herausgegeben von dem naturhistorischen Vereine für die preussischen Rheinlande." ; Includes bibliographical references. ; Mode of access: Internet.

Der Klimawandel stellt der Pflanzenzüchtung neue Aufgaben. Die Kombination diverser Züchtungsziele lässt gesunde, ertragsstarke und qualitativ hochwertige Öko-Sorten entstehen.

To achieve the 1.5 °C target of the Paris Climate Agreement that came into force in 2016 [UNI15], the conversion of the entire energy system to renewable energy sources is essential. Strong and stable wind conditions offshore as well as a high growth potential make offshore wind energy far away from shore an important energy source. The integration of such Offshore Wind Farms (OWF) has to be safe, flexible, efficient, and affordable, which makes High Voltage Direct Current (HVDC) transmission systems often the preferred choice for their grid connection. HVDC transmission systems consist of many subsystems, components, and interfaces e.g. to the OWF, which characterise them as complex systems. The complexity, many and diverse requirements and a large number of system design alternatives require grid planners, grid operators and manufacturers to employ a systematic approach to develop the most suitable design that meets all requirements and functions as expected in its environment. Systems Engineering with its procedure based on the so-called V-model, has proven itself for many years outside the energy industry as a suitable methodology for the development of complex systems. The extension to Model-Based Systems Engineering (MBSE) allows the specification of a system in a universal system modelling language (SysML) based on the activities in the V-model, which enables the collaborative system development across disciplines. Based on the MBSE methodology, a HVDC transmission system for a case study consisting of three OWFs with a total power of 3 GW is designed in this thesis. The requirements are derived from stakeholder needs and categorised before the system design process. Stakeholders are for example the OWF owner and the onshore grid operator. This thesis considers electrical engineering requirements and the objective of a low levelised cost of energy (LCOE) design. The system integration and verification of the prior defined requirements are performed, before a validated HVDC transmission system design is available following the system development process with the V-model. MBSE enables early identification of design errors through verification activities when they are still easy and cheap to correct. The SysML model forms the core element for the HVDC transmission system design as all relevant requirements, constraints, specifications, and the system objective are included in the model. The most suitable system architecture and component definition is developed with a Multi-Criteria Decision Aid assessment and selection method based on the specifications in the SysML model. In this thesis, a step-by-step guideline for the development of HVDC transmission systems based on MBSE is developed to improve the system design with an interdisciplinary and model-based approach. This approach leads to a detailed understanding of system elements and their interactions inside and outside the HVDC transmission system. The result for the case study is a HVDC configuration consisting of two symmetrical monopoles, which can be interconnected as a multi-terminal HVDC system in the event of a monopole failure. This arrangement is identified as the preferred architecture for the case study and assumptions. The converter transformer is chosen as an example to demonstrate the identification of the number and type of components as part of the Systems Engineering process. Discipline-specific models and simulations provide details to the design. At the end of the system design activities, the SysML model represents a detailed specification of the HVDC system and thereby replaces many documents with specifications. The advantage of the developed SysML model is to facilitate the design analysis and to identify the impact of requirement changes or changes in the system environment on the system design. The SysML and discipline-specific models allow the verification of system requirements, e.g. of the availability, which has a high influence on LCOE and is used as an assessment criterion on system and component level. The validation procedure is also introduced. Based on the proposed approach for HVDC transmission system development, the potential for the extension of the methodology for energy systems in general is presented to support the realisation of the energy system conversion to renewable energy sources. Um das 1,5 °C Ziel des 2016 in Kraft getretenen Pariser Klimaabkommens zu erreichen [UNI15], ist die Umstellung des gesamten Energiesystems auf erneuerbare Energiequellen unerlässlich. Starke und stabile Windverhältnisse auf dem Meer sowie ein hohes Wachstumspotenzial machen die Offshore-Windenergie fernab der Küste zu einer wichtigen Energiequelle. Die Integration solcher Offshore-Windparks (OWP) muss sicher, flexibel, effizient und bezahlbar sein, weshalb die Hochspannungs-Gleichstrom-Übertragung (HGÜ) oft für den Netzanschluss bevorzugt wird. HGÜ Systeme bestehen aus vielen Teilsystemen, Komponenten und Schnittstellen, z. B. zu den OWP, was sie zu komplexen Systemen macht. Die Komplexität, die vielen und unterschiedlichen Anforderungen und die große Anzahl von Systemalternativen erfordern für Netzplaner, Netzbetreiber und Hersteller einen systematischen Ansatz zur Entwicklung des am besten geeigneten Entwurfs, der alle Anforderungen erfüllt und in seiner Umgebung wie erwartet funktioniert. Das Systems Engineering mit seinem auf dem sogenannten V-Modell basierenden Vorgehen hat sich seit vielen Jahren außerhalb der Energiewirtschaft als geeignete Methodik für die Entwicklung komplexer Systeme bewährt. Die Erweiterung zum Model-Based Systems Engineering (MBSE) ermöglicht die Spezifikation eines Systems in einer universellen Systemmodellierungssprache (SysML) durch die Aktivitäten im V-Modell, was die kollaborative Systementwicklung über Disziplinen hinweg ermöglicht. Auf der Grundlage von MBSE wird in dieser Arbeit ein HGÜ System für eine Fallstudie entworfen, die aus drei OWPs mit einer Gesamtleistung von 3 GW besteht. Die Anforderungen werden aus der Notwendigkeit der Stakeholder abgeleitet und vor der Systementwicklung kategorisiert. Stakeholder sind beispielsweise der OWP Eigentümer und der Onshore Netzbetreiber. In dieser Arbeit werden elektrotechnische Anforderungen und das Ziel eines Designs mit niedrigen Stromgestehungskosten berücksichtigt. Die Systemintegration und Verifizierung der zuvor definierten Anforderungen wird durchgeführt, bevor ein validierter HGÜ Systementwurf nach dem Systementwicklungsprozess mit dem V-Modell zur Verfügung steht. MBSE ermöglicht die frühzeitige Identifizierung von Entwurfsfehlern durch Verifikation, wenn diese noch einfach und kostengünstig zu korrigieren sind. Das SysML Modell bildet das Kernelement für den Entwurf des HGÜ Systems, da alle relevanten Anforderungen, Randbedingungen, Spezifikationen und das Systemziel im Modell enthalten sind. Die am besten geeignete Systemarchitektur und Komponentendefinition wird auf der Grundlage der Spezifikationen im SysML-Modell mit einer multikriteriellen Methode zur Bewertung und Auswahl entwickelt.

Solar thermal hydrogen production with sulphur based thermochemical cycles can reach significantly higher efficiency than conventional water electrolysis. For these cycles decomposition of sulphuric acid is a key step allowing to couple concentrated solar radiation into the process. DLR developed a two-chamber test reactor to technically realise and experimentally analyse this reaction in the solar furnace in Cologne. Moreover, a model of the second reaction chamber for decomposition of SO3 was implemented and validated by experimental data.

Mode of access: Internet. ; Cogs.

Mit der Entwicklung von Künstlicher Intelligenz (KI) und dem zunehmend breiteren Zugang für alle sind große Hoffnungen und ebenso große Befürchtungen verbunden - auch im Hinblick auf soziale Chancen. Daher gibt es zahlreiche Konzepte und Empfehlungen zur ethischen Vertretbarkeit beim Einsatz von KI-Systemen, jedoch noch keine konkreten Regelungen zu deren Umsetzung. Der Autor sichtet diese Konzepte und Empfehlungen hinsichtlich ihres Beitrags zur Reduktion von Ungleichheiten und Armut. Er untersucht hierfür KI-Initiativen der Europäischen Union (z.B. die Ethik-Leitlinien für eine vertrauenswürdige KI, das Weißbuch zur Künstlichen Intelligenz oder den Vorschlag für ein KI-Gesetz/AI Act) und globale KI-Initiativen (z.B. die KI-Ethik-Empfehlungen der UNESCO, der OECD und des IEEE - Institute of Electrical and Electronics Engineers) sowie entsprechende Pläne in Brasilien als Vertreter des globalen Südens auf ihre Bezüge zu sozialer Nachhaltigkeit. Sein Fazit: Durch den Einsatz von KI sind Produktivitätsgewinne und Wirtschaftswachstum ebenso möglich wie Arbeitsplatzverluste. Damit KI soziale Nachhaltigkeitsziele erreichen kann, muss sie entsprechend entwickelt, gestaltet und eingesetzt werden. Dazu braucht es Instrumente und deren verbindliche Anwendung beim Einsatz von KI-Systemen. Andernfalls würde KI bestehende Verhältnisse reproduzieren bzw. Missverhältnisse sogar verstärken. (DIPF/Orig.) Great hopes and likewise great fears are associated with the development of artificial intelligence (AI) and increasingly wider ranging access to it for everyone - with regard to social opportunities as well. Hence there are a large number of concepts and recommendations for its ethical justifiability and the use of AI systems yet still no specific regulations regarding their implementation. The author views these concepts and recommendations through the lens of how they contribute to reducing inequalities and poverty. He investigates AI initiatives of the European Union (e.g., Ethics Guidelines for Trustworthy AI, White Paper on Artificial Intelligence or the proposal for an AI act) and global AI initiatives (e.g., the AI ethics recommendations of UNESCO, the OECD and the IEEE/Institute of Electrical and Electronics Engineers) as well as similar plans in Brazil as a representative of the global south for their references to social sustainability. His conclusion: Through the use of AI, productivity gains and economic growth are possible as well as job losses. AI must be developed, designed and used so it can achieve social sustainability goals. This requires tools and their mandatory application with AI systems. Otherwise, AI will reproduce existing conditions or even reinforce disparities. (DIPF/Orig.)

Cooperative ITS for road traffic offer potentials regarding road safety and traffic efficiency that go significantly beyond what can be achieved with isolated vehicle and infrastructure systems. However, besides functional and technical aspects there are legal and institutional, financial, political and culture barriers that need to be addressed and must be overcome in order to successfully deploy cooperative services on a broad level throughout Europe. This paper contains an analysis of identified barriers and their possible solutions on the basis of the eCoMove project and several research projects that deal with to C-ITS implementation.