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)
Objective
To investigate the feasibility of 7T MR imaging of the kidneys utilising a custom-built 8-channel transmit/receive radiofrequency body coil.
Methods
In vivo unenhanced MR was performed in 8 healthy volunteers on a 7T whole-body MR system. After B0 shimming the following sequences were obtained: 1) 2D and 3D spoiled gradient-echo sequences (FLASH, VIBE), 2) T1-weighted 2D in and opposed phase 3) True-FISP imaging and 4) a T2-weighted turbo spin echo (TSE) sequence. Visual evaluation of the overall image quality was performed by two radiologists.
Results
Renal MRI at 7T was feasible in all eight subjects. Best image quality was found using T1-weighted gradient echo MRI, providing high anatomical details and excellent conspicuity of the non-enhanced vasculature. With successful shimming, B1 signal voids could be effectively reduced and/or shifted out of the region of interest in most sequence types. However, T2-weighted TSE imaging remained challenging and strongly impaired because of signal heterogeneities in three volunteers.
Conclusion
The results demonstrate the feasibility and diagnostic potential of dedicated 7T renal imaging. Further optimisation of imaging sequences and dedicated RF coil concepts are expected to improve the acquisition quality and ultimately provide high clinical diagnostic value.
This article addresses the need for an innovative technique in plasma shaping, utilizing antenna structures, Maxwell’s laws, and boundary conditions within a shielded environment. The motivation lies in exploring a novel approach to efficiently generate high-energy density plasma with potential applications across various fields. Implemented in an E01 circular cavity resonator, the proposed method involves the use of an impedance and field matching device with a coaxial connector and a specially optimized monopole antenna. This setup feeds a low-loss cavity resonator, resulting in a high-energy density air plasma with a surface temperature exceeding 3500 o C, achieved with a minimal power input of 80 W. The argon plasma, resembling the shape of a simple monopole antenna with modeled complex dielectric values, offers a more energy-efficient alternative compared to traditional, power-intensive plasma shaping methods. Simulations using a commercial electromagnetic (EM) solver validate the design’s effectiveness, while experimental validation underscores the method’s feasibility and practical implementation. Analyzing various parameters in an argon atmosphere, including hot S -parameters and plasma beam images, the results demonstrate the successful application of this technique, suggesting its potential in coating, furnace technology, fusion, and spectroscopy applications.
Due to the decarbonization of the energy sector, the electric distribution grids are undergoing a major transformation, which is expected to increase the load on the operating resources due to new electrical loads and distributed energy resources. Therefore, grid operators need to gradually move to active grid management in order to ensure safe and reliable grid operation. However, this requires knowledge of key grid variables, such as node voltages, which is why the mass integration of measurement technology (smart meters) is necessary. Another problem is the fact that a large part of the topology of the distribution grids is not sufficiently digitized and models are partly faulty, which means that active grid operation management today has to be carried out largely blindly. It is therefore part of current research to develop methods for determining unknown grid topologies based on measurement data. In this paper, different clustering algorithms are presented and their performance of topology detection of low voltage grids is compared. Furthermore, the influence of measurement uncertainties is investigated in the form of a sensitivity analysis.
Kritische Infrastrukturen sind primäre Ziele krimineller Hacker. Der Deutsche Bundestag reagierte darauf am 25. Juli 2015 mit einem Gesetz zur Verbesserung der Sicherheit von ITSystemen, dem IT-Sicherheitsgesetz. Dies verlangt von Betreibern kritischer Infrastrukturen, angemessene Mindeststandards für organisatorische und technische Sicherheit zu implementieren, um den Betrieb und die Verfügbarkeit dieser Infrastruktur zu gewährleisten. Telekommunikationsunternehmen sind einerseits von diesem Gesetz in besonderem Maße betroffen und verfügen andererseits mit dem Rahmenwerk enhanced Telecom Operations Map (eTOM) über ein international anerkanntes Referenzmodell zur Gestaltung von Geschäftsprozessen in dieser Branche. Da sämtliche Telekommunikationsunternehmen in Deutschland verpflichtet sind, das Gesetz innerhalb eines bestimmten Zeitrahmens zu implementieren, präsentiert dieser Beitrag einen Vorschlag zur Erweiterung von eTOM um die relevanten Anforderungen des deutschen IT-Sicherheitsgesetzes.
Vestibular effects of a 7 Tesla MRI examination compared to 1.5 T and 0 T in healthy volunteers
(2014)
Ultra-high-field MRI (7 Tesla (T) and above) elicits more temporary side-effects compared to 1.5 T and 3 T, e.g. dizziness or “postural instability” even after exiting the scanner. The current study aims to assess quantitatively vestibular performance before and after exposure to different MRI scenarios at 7 T, 1.5 T and 0 T. Sway path and body axis rotation (Unterberger's stepping test) were quantitatively recorded in a total of 46 volunteers before, 2 minutes after, and 15 minutes after different exposure scenarios: 7 T head MRI (n = 27), 7 T no RF (n = 22), 7 T only B₀ (n = 20), 7 T in & out B₀ (n = 20), 1.5 T no RF (n = 20), 0 T (n = 15). All exposure scenarios lasted 30 minutes except for brief one minute exposure in 7 T in & out B₀. Both measures were documented utilizing a 3D ultrasound system. During sway path evaluation, the experiment was repeated with eyes both open and closed. Sway paths for all long-lasting 7 T scenarios (normal, no RF, only B₀) with eyes closed were significantly prolonged 2 minutes after exiting the scanner, normalizing after 15 minutes. Brief exposure to 7 T B₀ or 30 minutes exposure to 1.5 T or 0 T did not show significant changes. End positions after Unterberger's stepping test were significantly changed counter-clockwise after all 7 T scenarios, including the brief in & out B₀ exposure. Shorter exposure resulted in a smaller alteration angle. In contrast to sway path, reversal of changes in body axis rotation was incomplete after 15 minutes. 1.5 T caused no rotational changes. The results show that exposure to the 7 Tesla static magnetic field causes only a temporary dysfunction or “over-compensation” of the vestibular system not measurable at 1.5 or 0 Tesla. Radiofrequency fields, gradient switching, and orthostatic dysregulation do not seem to play a role.