Refine
Year of publication
Document Type
- Article (625)
- Conference Proceeding (296)
- Book (113)
- Part of a Book (61)
- Patent (15)
- Report (9)
- Other (8)
- Contribution to a Periodical (6)
- Course Material (6)
- Doctoral Thesis (6)
- Bachelor Thesis (1)
- Video (1)
- Poster (1)
- Review (1)
- Talk (1)
Language
- English (693)
- German (456)
- Multiple languages (1)
Keywords
- Multimediamarkt (7)
- Enterprise Architecture (5)
- MINLP (5)
- Engineering optimization (4)
- Gamification (4)
- Serious Game (4)
- Auslenkung (3)
- Digitale Transformation (3)
- Digitalisierung (3)
- Education (3)
- Javasimulation (3)
- Literaturanalyse (3)
- Optimization (3)
- Powertrain (3)
- Referenzmodellierung (3)
- Robotic Process Automation (3)
- Technical Operations Research (3)
- Telecommunication (3)
- Amplitude (2)
- Autonomous mobile robots (2)
- Competence Developing Games (2)
- Content Management (2)
- Energy efficiency (2)
- Experimental validation (2)
- Feder (2)
- Forschungsprozess (2)
- Hot S-parameter (2)
- Industry 4.0 (2)
- Machine Learning (2)
- Mathematik (2)
- Multi-robot systems (2)
- Optimal Topology (2)
- Process engineering (2)
- Prozessautomatisierung (2)
- Pump System (2)
- Simulation (2)
- Smart Building (2)
- Smart factory (2)
- TM Forum (2)
- Text Analytics (2)
- Ventilation System (2)
- Virtuelle Realität (2)
- Water (2)
- Water distribution system (2)
- autonomous driving (2)
- eTOM (2)
- enhanced Telecom Operations Map (eTOM) (2)
- mathematical optimization (2)
- robotic process automation (2)
- 3-D printing (1)
- 3D object detection (1)
- Advanced driver assistance systems (ADAS/AD) (1)
- Agile development (1)
- Agility (1)
- Android (1)
- Angle Sensor (1)
- Anomalieerkennung (1)
- Anomaly detection (1)
- Antennen (1)
- Anwendungsorientierter Forschungsansatz (1)
- Arbeit 4.0 (1)
- Artificial Intelligence (1)
- Automated driving (1)
- Automation (1)
- Automotive application (1)
- Awareness (1)
- BEV (1)
- BIM (1)
- Benchmark (1)
- Besetzungsinversion (1)
- Bewertungsframework (1)
- Bloom’s Taxonomy (1)
- Booster Stations (1)
- Buffering Capacity (1)
- Building Automation (1)
- Business Engineering (1)
- Business Process (1)
- Bändermodell (1)
- CAV (1)
- CCD-Bildwandler (1)
- CDG (1)
- CMS (1)
- CO2 (1)
- Calcium oxides (1)
- Carbon Dioxide (1)
- Case Study (1)
- Case study (1)
- Chance Constraint (1)
- Change culture (1)
- Chaostheorie (1)
- Charging stations (1)
- Chatbots (1)
- Circuit simulation (1)
- Competence Developing Gam (1)
- Competence Developing Game (1)
- Computational modeling (1)
- Connected Automated Vehicle (1)
- Conpot (1)
- Control (1)
- Controller Parameter (1)
- Cooling system (1)
- Cryptographic protocols (1)
- Customer Experience Management (1)
- Customer Journeys (1)
- Customer Orientation (1)
- Cyber-physical systems (1)
- Cybersecurity (1)
- Cybersicherheit (1)
- Datasets (1)
- Deep learning (1)
- Design Science Research (1)
- DiggiTwin (1)
- Digital Age (1)
- Digital Game Based Learning (1)
- Digital Twin Evolution (1)
- Digital transformation (1)
- Digital triage (1)
- Digital twin (1)
- Digitale Lehre (1)
- Discrete Optimisation (1)
- Dreidimensionale Bildverarbeitung (1)
- Drinking Water Supply (1)
- E-Learning (1)
- E-carsharing (1)
- E-mobility (1)
- EBSCO Discovery Service (1)
- Efficiency (1)
- Efficiency optimization (1)
- Electrocardiography (1)
- Electron-phonon coupling (1)
- Elektrische Leitung (1)
- Elektronengas (1)
- Elektrotechnik (1)
- Elicit (1)
- Energy (1)
- Energy Disaggregation (1)
- Engineering Application (1)
- Engineering optimisation (1)
- Enhanced Telecom Operations Map (1)
- Enterprise architecture (1)
- Enterprise transformation (1)
- FPGA (1)
- Feldsimulation (1)
- Festkörper (1)
- Forschung (1)
- Forschungsinformationssystem (1)
- Frequency Doubler (1)
- Fully connected car (1)
- Furnace (1)
- Fusion (1)
- Future Skills (1)
- GPU (1)
- Game-based learning (1)
- Gearbox (1)
- Geschäftsmodelle (1)
- Geschäftsprozessmanagement (1)
- Gleichspannungswandler (1)
- Global optimization (1)
- Graduiertentagung (1)
- Graph Theory (1)
- HDTV (1)
- Harmonic Radar (1)
- He-Ne Laser (1)
- He-Ne Schema (1)
- Helium-Neon-Laser (1)
- Heuristic algorithms (1)
- High Definition Media Services (1)
- High Quality Streaming (1)
- Hochfrequenztechnik (1)
- Home Assistant (1)
- Home Automation Platform (1)
- IBM Watson Explorer (1)
- ICS (1)
- IP-based networks (1)
- ISO 26262 (1)
- IT security education (1)
- IT-Marketing (1)
- IT-Sicherheit (1)
- Image Database (1)
- Image Forensics (1)
- Implementation Case (1)
- Impulstechnik (1)
- Incremental Encoder (1)
- IndraMotion (1)
- Inductive charging (1)
- Industrial optimisation (1)
- Information and communication technology (1)
- Informationsgetriebene Geschäftsmodelle (1)
- Informationssicherheit (1)
- Informationssicherheitsmanagement (1)
- Integrated mobility (1)
- Intelligentes Parken (1)
- Interactive process mining (1)
- Interdisciplinarity (1)
- Internet der Dinge (1)
- IoT (1)
- Keyword analysis (1)
- Klassifikator <Informatik> (1)
- Kommerzielle Interaktionen (1)
- LQR (1)
- Latin Hypercube Sampling (1)
- Leaderboard (1)
- Lean thinking (1)
- Level Control System (1)
- LiDAR (1)
- Lichtabsorption (1)
- Lichtbetrachtung (1)
- Lichtemission (1)
- Lichtquelle (1)
- Lidar (1)
- Literatur-analyse-prozess (1)
- Literaturdaten (1)
- Literature review (1)
- Literaturrecherche (1)
- MATLAB , MLPI , Motion control , Open Core , industrial drives , rapid control prototypin , sercos automation bus (1)
- MILP (1)
- MPC (1)
- MPEG 4 (1)
- MPEG 7 (1)
- MPEG-Standard (1)
- Machine learning (1)
- Malicious model (1)
- Management (1)
- Map (eTOM) Process reference model Process design Telecommunications industry (1)
- McLuhan, Marshall (1)
- Methodology (1)
- Minimum Risk Manoeuvre (1)
- Mixed Integer Programming (1)
- Mixed-Integer Nonlinear Optimisation (1)
- Mixed-integer nonlinear black-box optimization (1)
- Mixed-integer nonlinear problem (1)
- Mixed-integer nonlinear programming (1)
- Mixed-integer programming (1)
- Mobile Phones (1)
- Mobility management (1)
- Mode converter (1)
- Modeling (1)
- Monetarisierung (1)
- Motion-Logic System (1)
- Mpc (1)
- Multi-criteria optimization (1)
- Multimedia-Dienst (1)
- NGN (1)
- Navigation (1)
- Network (1)
- Network design (1)
- Neural networks (1)
- Next Generation Network (1)
- OR 2019 (1)
- Objective data (1)
- Objekterkennung (1)
- Open Source (1)
- Operational Design Domain (1)
- Optimal Closed Loop (1)
- PPO (1)
- Paper recycling (1)
- Path-following (1)
- Pendel (1)
- Performance (1)
- Personality (1)
- Phonons (1)
- Piecewise Linearization (1)
- Piecewise linearization (1)
- Plasma (1)
- Plasma diagnostics (1)
- Plasmatechnik (1)
- Player Types (1)
- Position Encoder (1)
- Praxisprojekte (1)
- Preface (1)
- Privacy-enhancing technologies (1)
- Process design (1)
- Process optimization (1)
- Process reference model (1)
- Process virtualization (1)
- Product bundling (1)
- Product family optimization (1)
- Projektbeispiele (1)
- Prototype (1)
- Prozessabläufe (1)
- Prozessagilität (1)
- Prozessmodellierung (1)
- Prozessstandardisierung (1)
- Pulselektroniklabor (1)
- Pumping systems (1)
- Qualitative Wertschöpfungsanalyse (1)
- Quality control (1)
- Quantum Computing (1)
- Quantum Machine Learning (1)
- Radar (1)
- Reference Process Model (1)
- Reference modelling (1)
- Referenzmodelle (1)
- Reinforcement Learning (1)
- Relaxation (1)
- Rescue System (1)
- Research process (1)
- Resilience (1)
- Resilience Assessment (1)
- Resilience assessment (1)
- Resilience metric graph theory (1)
- Resilient infrastructure (1)
- Resonator (1)
- RoboCup (1)
- Robotic process automation (1)
- Rotary encoder (1)
- Rotational Encoder (1)
- Rotatory Inverted Pendulum (1)
- SPS (1)
- Safety of the intended functionality (SOTIF) (1)
- Safety-critical systems validation (1)
- Secure multi-party computation (1)
- Self-driving (1)
- Sensors comparison (1)
- Serious Games (1)
- Serviceintegration (1)
- Services (1)
- Signalquelle (1)
- Similarity Theory (1)
- Society (1)
- Software (1)
- Software Robots (1)
- Software development (1)
- Software testing (1)
- Softwareroboter (1)
- Solver Per- formance (1)
- Speicherprogrammierte Steuerung (1)
- Stochastic Programming (1)
- Story (1)
- Stress testing (1)
- Subject-oriented Business Process Management (1)
- Supraleitung (1)
- Sustainability (1)
- System Design (1)
- System Design Problem (1)
- TGA (1)
- Tag (1)
- Teamwork (1)
- Technical Operation Research (1)
- Telecommunication Industry (1)
- Telecommunications Industry. (1)
- Text Analytics (1)
- Text Mining (1)
- Text analytics (1)
- Text mining (1)
- Three-dimensional displays (1)
- Time-series synchronization (1)
- Transdisciplinarity (1)
- Transformation (1)
- Transformation Project (1)
- Transformative Competencies (1)
- Transiton of Control (1)
- Transponder (1)
- Triage-app (1)
- Uncertainty (1)
- Unternehmensarchitektur (1)
- Unternehmensarchitekturen (1)
- Unternehmensarchitekturen Internet der Dinge (1)
- Unternehmensstrukturen (1)
- Unternehmenstransformation (1)
- Urban areas (1)
- V2X (1)
- Validation (1)
- Video Game (1)
- Vorverarbeitung (1)
- WLTP (1)
- Water Distribution (1)
- Water Supply Networks (1)
- Water Supply System (1)
- Water supply system (1)
- Wearable electronic device (1)
- Wertschöpfungskettenanalyse (1)
- Wiegand Effect (1)
- Wiegand sensor (1)
- Wissenstransfer (1)
- Wärmeübertragung (1)
- Zero-knowledge proofs (1)
- active learning (1)
- agile (1)
- anticipation strategy (1)
- applications (1)
- artificial intelligence (1)
- automated vehicles (1)
- availability (1)
- batteries and fuel cells (1)
- body imaging at 7 T MRI (1)
- business analytics (1)
- business process automation (1)
- business simulation (1)
- commercial offthe- shelf solutions (1)
- competence developing games (1)
- connected automated vehicles (1)
- culpability (1)
- cybersecurity (1)
- decision analytics (1)
- design of technical systems (1)
- digital economy (1)
- do-it-yourself (1)
- education (1)
- electrospinning (1)
- embedded hardware (1)
- energy efficiency (1)
- energy transfer (1)
- experimental evaluation (1)
- fault detection (1)
- fibers (1)
- genetic algorithm (1)
- global optimization (1)
- harmonic radar (1)
- harmonic radar tags (1)
- heating system (1)
- honeynet (1)
- honeypot (1)
- ignition (1)
- information systems (1)
- irradiation (1)
- lab work (1)
- learning theories (1)
- legal obligations (1)
- liability (1)
- management (1)
- metrological characterization (1)
- microplasma (1)
- microwave (MW) plasma (1)
- microwave measurements (1)
- mixed-integer linear programming (1)
- model-predictive control (1)
- motivation theories (1)
- next generation network (1)
- nonlinear VNA measurements (1)
- optimization (1)
- passive inter-modulation (1)
- plasma jet (1)
- porous materials (1)
- power integrity (1)
- product bundling (1)
- product liability (1)
- professional skills (1)
- programming (1)
- remote sensing (1)
- requirements (1)
- research framework (1)
- resilience (1)
- sensor networks (1)
- signal integrity (1)
- slum classification (1)
- software engineering (1)
- software evaluation (1)
- software selection (1)
- stochastic optimization (1)
- sustainability (1)
- system optimization (1)
- system synthesis (1)
- systematic literature review (1)
- tablet game (1)
- technical operations research (1)
- technology (1)
- telecommunication (1)
- thermal dose (1)
- tissue temperature (1)
- transmit antenna arrays (1)
- water supply design (1)
- water supply system (1)
- Überwachung & Optimierung (1)
Institute
- Fachbereich Elektrotechnik und Informationstechnik (1150) (remove)
The application of mathematical optimization methods for water supply system design and operation provides the capacity to increase the energy efficiency and to lower the investment costs considerably. We present a system approach for the optimal design and operation of pumping systems in real-world high-rise buildings that is based on the usage of mixed-integer nonlinear and mixed-integer linear modeling approaches. In addition, we consider different booster station topologies, i.e. parallel and series-parallel central booster stations as well as decentral booster stations. To confirm the validity of the underlying optimization models with real-world system behavior, we additionally present validation results based on experiments conducted on a modularly constructed pumping test rig. Within the models we consider layout and control decisions for different load scenarios, leading to a Deterministic Equivalent of a two-stage stochastic optimization program. We use a piecewise linearization as well as a piecewise relaxation of the pumps’ characteristics to derive mixed-integer linear models. Besides the solution with off-the-shelf solvers, we present a problem specific exact solving algorithm to improve the computation time. Focusing on the efficient exploration of the solution space, we divide the problem into smaller subproblems, which partly can be cut off in the solution process. Furthermore, we discuss the performance and applicability of the solution approaches for real buildings and analyze the technical aspects of the solutions from an engineer’s point of view, keeping in mind the economically important trade-off between investment and operation costs.
Water distribution systems are an essential supply infrastructure for cities. Given that climatic and demographic influences will pose further challenges for these infrastructures in the future, the resilience of water supply systems, i.e. their ability to withstand and recover from disruptions, has recently become a subject of research. To assess the resilience of a WDS, different graph-theoretical approaches exist. Next to general metrics characterizing the network topology, also hydraulic and technical restrictions have to be taken into account. In this work, the resilience of an exemplary water distribution network of a major German city is assessed, and a Mixed-Integer Program is presented which allows to assess the impact of capacity adaptations on its resilience.
To maximize the travel distances of battery electric vehicles such as cars or buses for a given amount of stored energy, their powertrains are optimized energetically. One key part within optimization models for electric powertrains is the efficiency map of the electric motor. The underlying function is usually highly nonlinear and nonconvex and leads to major challenges within a global optimization process. To enable faster solution times, one possibility is the usage of piecewise linearization techniques to approximate the nonlinear efficiency map with linear constraints. Therefore, we evaluate the influence of different piecewise linearization modeling techniques on the overall solution process and compare the solution time and accuracy for methods with and without explicitly used binary variables.
One central challenge for self-driving cars is a proper path-planning. Once a trajectory has been found, the next challenge is to accurately and safely follow the precalculated path. The model-predictive controller (MPC) is a common approach for the lateral control of autonomous vehicles. The MPC uses a vehicle dynamics model to predict the future states of the vehicle for a given prediction horizon. However, in order to achieve real-time path control, the computational load is usually large, which leads to short prediction horizons. To deal with the computational load, the control algorithm can be parallelized on the graphics processing unit (GPU). In contrast to the widely used stochastic methods, in this paper we propose a deterministic approach based on grid search. Our approach focuses on systematically discovering the search area with different levels of granularity. To achieve this, we split the optimization algorithm into multiple iterations. The best sequence of each iteration is then used as an initial solution to the next iteration. The granularity increases, resulting in smooth and predictable steering angle sequences. We present a novel GPU-based algorithm and show its accuracy and realtime abilities with a number of real-world experiments.
Communication via serial bus systems, like CAN, plays an important role for all kinds of embedded electronic and mechatronic systems. To cope up with the requirements for functional safety of safety-critical applications, there is a need to enhance the safety features of the communication systems. One measure to achieve a more robust communication is to add redundant data transmission path to the applications. In general, the communication of real-time embedded systems like automotive applications is tethered, and the redundant data transmission lines are also tethered, increasing the size of the wiring harness and the weight of the system. A radio link is preferred as a redundant transmission line as it uses a complementary transmission medium compared to the wired solution and in addition reduces wiring harness size and weight. Standard wireless links like Wi-Fi or Bluetooth cannot meet the requirements for real-time capability with regard to bus communication. Using the new dual-mode radio enables a redundant transmission line meeting all requirements with regard to real-time capability, robustness and transparency for the data bus. In addition, it provides a complementary transmission medium with regard to commonly used tethered links. A CAN bus system is used to demonstrate the redundant data transfer via tethered and wireless CAN.
This paper introduces a new maritime search and rescue system based on S-band illumination harmonic radar (HR). Passive and active tags have been developed and tested while attached to life jackets and a small boat. In this demonstration test carried out on the Baltic Sea, the system was able to detect and range the active tags up to a distance of 5800 m using an illumination signal transmit-power of 100 W. Special attention is given to the development, performance, and conceptual differences between passive and active tags used in the system. Guidelines for achieving a high HR dynamic range, including a system components description, are given and a comparison with other HR systems is performed. System integration with a commercial maritime X-band navigation radar is shown to demonstrate a solution for rapid search and rescue response and quick localization.
Im Projekt wurden mit Hilfe zeitaufgeloester optischer Messtechniken Relaxations-Dynamiken von optisch angeregten Ladungstraegern und Hochfrequenzeigenschaften von Hochtemperatursupraleitern untersucht. Oberhalb der Sprungtemperatur wurden die Elektron-Phonon-Kopplungskonstanten fuer YBCO und BSCCO bestimmt. Dabei wurde erstmalig ein direkter Zusammenhang zwischen der Sprungtemperatur und der Kopplungstaerke gefunden. Der Kopplungsmechanismus enthaelt sowohl phononische als auch elektronische (spindynamische) Anteile. Unterhalb von T_c wird die Dynamik durch Aufbrechen und Rekombination von Cooper-Paaren bestimmt. Bei den Arbeiten zu den kohaerenten Phononen wurde ein Modell entwickelt, das das 'Anwerfen' der Phononen und das Amplitudenverhalten unterhalb der Sprungtemperatur erklaert. Als begleitende Untersuchungen wurden breitbandige Hochfrequenz-Messungen vorgenommen. Die Methode erlaubt die Untersuchung von Ladungstraegerdichten und von Streumechanismen. Erstmalig wurde in verspannten YBCO-Duennfilmen eine starke temperaturabhaengige Resonanz-Absorption beobachtet, die als Josephson-Plasmaresonanz an intrinsischen Kontakten identifiziert werden konnte. Die Nutzbarkeit dieser Kontakte fuer Bauelemente wurde durch einen Mikrowellendetektor demonstriert. Durch den Nachweis von emittierter gepulster Strahlung aus einer stromdurchflossenen supraleitenden Bruecke nach optischer Anregung wurde erstmals die Einsatzmoeglichkeit von HTSL fuer schnelle optische Schalter demonstriert. Es wurde gezeigt, dass die Schaltgeschwindigkeit eine direkte Folge der Ladungstraegerdynamik ist.