Springer
Refine
Year of publication
Institute
- Fachbereich Medizintechnik und Technomathematik (75)
- Fachbereich Elektrotechnik und Informationstechnik (73)
- IfB - Institut für Bioengineering (43)
- Fachbereich Luft- und Raumfahrttechnik (34)
- Fachbereich Chemie und Biotechnologie (25)
- Fachbereich Energietechnik (24)
- Fachbereich Wirtschaftswissenschaften (21)
- Fachbereich Maschinenbau und Mechatronik (15)
- INB - Institut für Nano- und Biotechnologien (12)
- MASKOR Institut für Mobile Autonome Systeme und Kognitive Robotik (12)
Document Type
- Article (145)
- Part of a Book (104)
- Conference Proceeding (25)
- Book (2)
Keywords
- MINLP (3)
- Natural language processing (3)
- Prozessautomatisierung (3)
- Seismic design (3)
- Additive manufacturing (2)
- CFD (2)
- Digitale Transformation (2)
- Engineering optimization (2)
- Information extraction (2)
- Obstacle avoidance (2)
- Optimization (2)
- Path planning (2)
- Pitching Moment (2)
- Powertrain (2)
- Process engineering (2)
- Robotic Process Automation (2)
- Tanks (2)
- Telecommunication (2)
- UAV (2)
- Wave Drag (2)
- Wind Tunnel (2)
- 3D printing (1)
- ABE (1)
- Acid crash (1)
- Active learning (1)
- Actuator disk modelling (1)
- Acyl-amino acids (1)
- Acylation (1)
- Advanced driver assistance systems (ADAS/AD) (1)
- Agent-based simulation (1)
- Aircraft sizing (1)
- Algal Turf Scrubber (1)
- Algal–bacterial bioflm (1)
- Aminoacylase (1)
- Analytics (1)
- Annulus Fibrosus (1)
- Arbeit 4.0 (1)
- Autonomous mobile robots (1)
- Autonomy (1)
- BET (1)
- BEV (1)
- Bahadur efficiency (1)
- Balance (1)
- Balanced hypergraph (1)
- Best practice sharing (1)
- Bio-inspired systems (1)
- Biocatalysis (1)
- Bioeconomy (1)
- Bioethanol (1)
- Biogas (1)
- Biomechanical simulation (1)
- Biomolecular logic gate (1)
- Biorefinery (1)
- Biorefinery definitions (1)
- Biosurfactants (1)
- Bladder (1)
- Bloom’s Taxonomy (1)
- Bone sawing (1)
- Boundary integral equations (1)
- Brake set-up (1)
- Brake test (1)
- Business Models (1)
- Business Process (1)
- Butanol (1)
- C. acetobutylicum (1)
- CFD propeller simulation (1)
- Calorimetric gas sensor (1)
- Capacitive field-effect sensor (1)
- Cardiovascular MRI (1)
- Carsharing (1)
- Centrifugal twisting moment (1)
- Certification Rule (1)
- Change culture (1)
- Chaperone (1)
- Charging station (1)
- Charging stations (1)
- Chatbots (1)
- Chemical imaging (1)
- Chondroitin sulfate (1)
- Circular bioeconomy (1)
- Cloud Computing (1)
- Clustering (1)
- Co-managed care (1)
- Coefficient of ocular rigidity (1)
- Cognitive assistance system (1)
- Collaborative robot (1)
- Competence Developing Games (1)
- Complex System (1)
- Components (1)
- Connected Automated Vehicle (1)
- Controller Parameter (1)
- Cooling system (1)
- Corneo-scleral shell (1)
- Coverage probability (1)
- Cryptographic protocols (1)
- Crámer–von-Mises distance (1)
- Customer Orientation (1)
- DNA (1)
- Datenschutz (1)
- Decentral (1)
- Deep Learning (1)
- Deep learning (1)
- Design examples (1)
- Dietary supplements (1)
- Differential tonometry (1)
- Digital leadership (1)
- Digital manufacturing (1)
- Digitalisierung (1)
- Disc Degeneration (1)
- Drag Reduction (1)
- Drag estimation (1)
- Dry surfaces (1)
- Duality (1)
- E-carsharing (1)
- E-mobility (1)
- EN 1998-4 (1)
- Efficiency optimization (1)
- Elderly (1)
- Electrical vehicle (1)
- Electromagnetism (1)
- Electronic vehicle (1)
- Elektroenzephalographie (1)
- Elicit (1)
- Energy efficiency (1)
- Energy market design (1)
- Engine Efficiency (1)
- Engineering optimisation (1)
- Enterprise Architecture (1)
- Enterprise architecture (1)
- Enterprise transformation (1)
- Enzyme biosensor (1)
- Equivalence test (1)
- Eurocode 8 (1)
- Evacuation Rule (1)
- Experimental validation (1)
- Extension–twist coupling (1)
- Eyeball (1)
- FGF23 (1)
- Fall prevention (1)
- Field-effect device (1)
- Field-effect sensor (1)
- Flight Test (1)
- Fracture configuration (1)
- Fracture simulation (1)
- Freight rail (1)
- Fully connected car (1)
- Game-based learning (1)
- Gamification (1)
- Gearbox (1)
- Geschäftsprozessmanagement (1)
- Glass powder (1)
- Glaucoma (1)
- Global optimization (1)
- Glucosamine (1)
- Gold nanoparticle (1)
- Goodness-of-fit tests for uniformity (1)
- Ground-level falls (1)
- Growth modelling (1)
- Gust wind response (1)
- Hall’s Theorem (1)
- Helmholtz equation (1)
- High field MRI (1)
- High-field NMR (1)
- Human-Robot interaction (1)
- Human-centered work design (1)
- Human-robot collaboration (1)
- Hydraulic structures (1)
- Hydrogen peroxide (1)
- Hypergraph (1)
- ISO 26262 (1)
- IT Products (1)
- IT security education (1)
- IT-Sicherheit (1)
- Ice melting probe (1)
- Ice penetration (1)
- Icy moons (1)
- Identitätsmanagement (1)
- Incident analysis (1)
- Incomplete data (1)
- Inductive charging (1)
- Industrial facilities (1)
- Industrial optimisation (1)
- Industrial units (1)
- Industry 4.0 (1)
- Information and communication technology (1)
- Informationsgetriebene Geschäftsmodelle (1)
- Integrated empirical distribution (survival) function (1)
- Integrated mobility (1)
- Interactive process mining (1)
- Interior Neumann eigenvalues (1)
- Internet der Dinge (1)
- Intervertebral Disc (1)
- Intradiscal Pressure (1)
- Introduction (1)
- Kernel density estimator (1)
- Keyword analysis (1)
- Klotho (1)
- Koenig’s Theorem (1)
- L-PBF (1)
- Label-free detection (1)
- Laser processing (1)
- Leaderboard (1)
- Leading Edge Vortex (1)
- Lean thinking (1)
- Left ventriular function (1)
- Length of confidence intervals (1)
- Level Control System (1)
- Lifting propeller (1)
- Light-addressable potentiometric sensor (1)
- Lignocellulose feedstook (1)
- Limit analysis (1)
- Local path planning (1)
- MILP (1)
- MR safety (1)
- MR-stethoscope (1)
- MRI (1)
- Mach Number (1)
- Machine learning (1)
- Magnetic field strength (1)
- Magnetic resonance imaging (MRI) (1)
- Magneto alert sensor (1)
- Malicious model (1)
- Map (eTOM) Process reference model Process design Telecommunications industry (1)
- Marginal homogeneity test (1)
- Market modeling (1)
- Mars (1)
- Matching (1)
- Mechanical (1)
- Mechanical simulation (1)
- Melting (1)
- Metabolic shift (1)
- Methane (1)
- Methodology (1)
- Microbial adhesion (1)
- Minimum Risk Manoeuvre (1)
- Minor chemistry (1)
- Mixed-integer nonlinear black-box optimization (1)
- Mixed-integer nonlinear problem (1)
- Mixed-integer nonlinear programming (1)
- Mixed-integer programming (1)
- Mobility (1)
- Mobility management (1)
- Mobility tests (1)
- Monetarisierung (1)
- Multi-criteria optimization (1)
- Multi-robot systems (1)
- Multi-sensor system (1)
- Multidisciplinary Design Optimization (1)
- Multimode failure (1)
- Multirotor UAS (1)
- Muscle fibers (1)
- Natural language understanding (1)
- Network (1)
- Neural Network (1)
- Noise Exposure (1)
- Non-linear optimization (1)
- Nonlinear Dynamics (1)
- Nucleus Pulposus (1)
- Numerical inversion of Laplace transforms (1)
- Numerics (1)
- OR 2019 (1)
- Objective data (1)
- Ocean worlds (1)
- Ocular blood flow (1)
- On-site (1)
- Open channels (1)
- Operational Design Domain (1)
- Optimal Closed Loop (1)
- Optimal Topology (1)
- PTH (1)
- Paired sample (1)
- Paper recycling (1)
- Parabolized Stability Equation (1)
- Parasitic drag (1)
- Parking (1)
- Passenger compartment (1)
- Passive stretching (1)
- Pelvic floor dysfunction (1)
- Pelvic muscle (1)
- Performance (1)
- Personality (1)
- Phosphate (1)
- Physical chemistry (1)
- Physical chemistry basics (1)
- Physical chemistry starters (1)
- Physical modeling (1)
- Piecewise linearization (1)
- Pitman efficiency (1)
- Plant virus (1)
- Polysaccharides (1)
- Potential theory (1)
- Potentiometry (1)
- Pre-culture (1)
- Pre-treatment (1)
- Pressure-volume relationship (1)
- Privacy (1)
- Privacy-enhancing technologies (1)
- Process design (1)
- Process reference model (1)
- Process schemes (1)
- Process virtualization (1)
- Product Management (1)
- Product bundling (1)
- Product family optimization (1)
- Profile extraction (1)
- Projektbeispiele (1)
- Propeller aerodynamics (1)
- Propeller performance (1)
- Proximal humerus fracture (1)
- Prozessabläufe (1)
- Prozessmodellierung (1)
- Prozessstandardisierung (1)
- Prozessverbesserung (1)
- Psychiatrische Biomarker (1)
- Pumping systems (1)
- Pushover analysis (1)
- Qualitative Wertschöpfungsanalyse (1)
- Query learning (1)
- RPA (1)
- RVA (1)
- Rapid manufacturing (1)
- Rapid prototyping (1)
- Reconstruction (1)
- Reference modelling (1)
- Referenzmodellierung (1)
- Relation classification (1)
- Reliability analysis (1)
- Renewable resources (1)
- Reproducible research (1)
- Resampling test (1)
- Reservation system (1)
- Resilience (1)
- Resolvent Operator (1)
- Response spectrum (1)
- Responsibility (1)
- RoboCup (1)
- Rotator cuff (1)
- Safety concept (1)
- Safety of the intended functionality (SOTIF) (1)
- Safety-critical systems validation (1)
- Sampling methods (1)
- Schlafspindeldetektion (1)
- Secure multi-party computation (1)
- Selektionskriterien (1)
- Services (1)
- Severe Accident (1)
- Shakedown analysis (1)
- Silos (1)
- Similitude (1)
- Simulation (1)
- Smart factory (1)
- Software (1)
- Software development (1)
- Software testing (1)
- Softwareroboter (1)
- Sonic Boom (1)
- Specific Fuel Consumption (1)
- Spectral analysis (1)
- Strategic Business Planning (1)
- Structural health monitoring (1)
- Supersonic Flow (1)
- Supersonic Wind Tunnel (1)
- Surface microorganisms (1)
- Swabbing (1)
- TM Forum (1)
- Teamwork (1)
- Technical Operation Research (1)
- Technical Operations Research (1)
- Technische Schutzmaßnahmen (1)
- Technology Challenge (1)
- Telecommunication Industry (1)
- Text mining (1)
- Thermal Fatigue Testing (1)
- Thermal comfort (1)
- Thermal management (1)
- Thermodynamics as minor (1)
- Tinetti test (1)
- Tobacco mosaic virus (TMV) (1)
- Train composition (1)
- Transformation (1)
- Transformation Project (1)
- Transiton of Control (1)
- Trapeze effect (1)
- Trustworthy artificial intelligence (1)
- Uktrahigh field MRI (1)
- Unmanned aerial vehicles (1)
- Urban areas (1)
- Ureter (1)
- Utilization improvement (1)
- V2X (1)
- Validation (1)
- Variable Geometry (1)
- Vascular response (1)
- Vertex cover (1)
- Visual field asymmetry (1)
- Vitamin D (1)
- WLTP (1)
- Water (1)
- Water distribution system (1)
- Wilcoxon tests (1)
- Wind milling (1)
- Wind tunnel experiments (1)
- Wind turbulence (1)
- Workspace monitoring (1)
- Zero-knowledge proofs (1)
- Zeta potential (1)
- business analytics (1)
- decision analytics (1)
- digital economy (1)
- eTOM (1)
- enhanced Telecom Operations Map (eTOM) (1)
- mathematical optimization (1)
- training simulator (1)
- virtual reality (1)
- · Psychiatrische Erkrankungen/Diagnostik (1)
Density Operator
(2009)
This work describes a procedure to yield attenuation maps from MR images which are used for the absorption correction (AC) of brain PET data. Such an approach could be mandatory for future combined PET and MRI scanners, which probably do not include a transmission facility. T1-weighted MR images were segmented into brain tissue, bone, soft tissue, and sinus; attenuation coefficients corresponding to elemental composition and density as well as to 511 keV photon energy were respectively assigned. Attenuation maps containing up to four compartments were created and forward projected into sinograms with attenuation factors which then were used for AC during reconstruction of FDG-PET data. The commonly used AC based on a radioactive (68Ge) transmission scan served as reference. The reconstructed radioactivity values obtained with the MRI-based AC were about 20% lower than those obtained with PET-based AC if the skull was not taken into account. Considering the skull the difference was still about 10%. Our investigations demonstrate the feasibility of a MRI-based AC, but revealed also the necessity of a satisfying delineation of bone thickness which tends to be underestimated in our first approach of T1-weighted MR image segmentation.
In the preceeding chapters on “Son of Concorde, a Technology Challenge” and “Aerodynamic Multipoint Design Challenge” it was explained, that a well balanced contribution of new technologies in all major disciplines is required for realisation of a new Supersonic Commercial Transport (SCT). One of these technologies - usually one of the most important for aircraft-is aerodynamics. Here, the required “pure” aerodynamic technologies are specified in more detail, according to our present knowledge. Increasing insight into the problems may change the balance of importance of the individual technologies and may require some more contributions. We must never confine our knowledge to the knowledge base of an expert at a given time, but must stay open for new insights.
Since certification of Concorde new certification standards were introduced including many new regulations to improve flight safety. Most of these standards are to prevent severe accidents in the future which happened in the past (here: after Concorde’s certification). A new SCT has to fulfill these standards, although Concorde had none of these accidents. But accidents - although they sometimes occurred only for a specific aircraft type - have to be avoided for any (new) aircraft. Because of existing aircraft without typical accident types having demonstrated their reliability, they are allowed to go on based on their old certification; although sometimes new rules prevent accident types which are not connected to specific aircraft types - like e.g. evacuation rules. Anyway, Concorde is allowed to fly based on its old certification, and hopefully in the future will fly as safely as in the past. But a new SCT has to fulfill updated rules like any other aircraft, and it has to be “just another aircraft” [75].
Supersonic laminar flow
(1997)
Supersonic transports are very drag sensitive. Technology to reduce drag by application of laminar flow, therefore, will be important; it is a prerequisite to achieve very long range capability. In earlier studies it was assumed that SCTs would only become possible by application of laminar flow [376]. But today, we request an SCT to be viable without application of laminar flow in order to maintain its competitiveness when laminar flow becomes available for subsonic and supersonic transports. By reducing fuel burned, laminar flow drag reduction reduces size and weight of the aircraft, or increases range capability -whereas otherwise size and weight would grow towards infinity. Transition mechanisms from laminar to turbulent state of the boundary layer flow (ALT, CFI, TSI) function as for transonic transports, but at more severe conditions: higher sweep angles, cooled surfaces; higher mode instabilities (HMI) must at least be taken into account, although they may not become important below Mach 3. Hitherto there is a worldwide lack of ground test facilities to investigate TSI at the expected cruise Mach numbers between 1.6 and 2.4; in Stuttgart, Germany one such facility -a Ludwieg tube- is still in the validation phase. A quiet Ludwieg tunnel could be a favourable choice for Europe. But it will require a new approach in designing aircraft which includes improved theoretical predictions, usage of classical wind tunnels for turbulent flow and flight tests for validation.
Concorde (Figure 9) is the only supersonic airliner which has been introduced into regular passenger service. It is still in service at British Airways and Air France without any flight accidents, and probably will stay in service for at least for ten more years.
In the chapter “Son of Concorde, a Technology Challenge” one of the new challenges for a Supersonic Commercial Transport (SCT) is multi-point design for the four main design points:
- supersonic cruise
- transonic cruise
- take-off and landing
- transonic acceleration.