Refine
Year of publication
Document Type
- Conference Proceeding (950)
Conference Type
- Konferenzartikel (950) (remove)
Keywords
- Gamification (12)
- Machine Learning (12)
- Finite-Elemente-Methode (9)
- Assistive Technology (8)
- Kommunikation (8)
- Ausbildung (7)
- Deep Leaning (7)
- TRIZ (7)
- Additive Manufacturing (6)
- Design (6)
- E-Learning (6)
- Education (6)
- Produktion (6)
- machine learning (6)
- Deafblindness (5)
- Eingebettetes System (5)
- Human Computer Interaction (5)
- Optik (5)
- Produktentwicklung (5)
- Roboter (5)
- Sensortechnik (5)
- User Experience (5)
- Wearables (5)
- research-oriented education (5)
- 3D printing (4)
- Applikation (4)
- Augmented Reality (4)
- Education in Optics and Photonics (4)
- Energieversorgung (4)
- Haustechnik (4)
- Konstruktion (4)
- Kühldecke (4)
- Künstliche Intelligenz (4)
- Licht (4)
- Messung (4)
- Netzwerk (4)
- Raumklima (4)
- Robustness (4)
- Sicherheit (4)
- Stahl (4)
- VR (4)
- eco-innovation (4)
- energy harvesting (4)
- injury (4)
- optics and photonics (4)
- 5G mobile communication (3)
- Additive Tooling (3)
- Affective Computing (3)
- Applied computing (3)
- Automation (3)
- Blockchain (3)
- Brennstoffzelle (3)
- Couplings (3)
- Deep Learning (3)
- Design automation (3)
- Digitalisierung (3)
- Energy Management (3)
- Eye Tracking (3)
- Funktechnik (3)
- Generative Adversarial Network (3)
- Haptics (3)
- Hochschuldidaktik (3)
- Human Resources (3)
- Innovation (3)
- Kerbe (3)
- Klimatechnik (3)
- Lehre (3)
- Leistungselektronik (3)
- Materialermüdung (3)
- Messtechnik (3)
- Photonik (3)
- Plastizität (3)
- Radar (3)
- Rehabilitation (3)
- Rissausbreitung (3)
- Robotics (3)
- Security (3)
- Software (3)
- Sound Synthesis (3)
- Substrates (3)
- TRIZ Inventive Principles (3)
- TRIZ methodology (3)
- Tactile (3)
- Virtual Reality (3)
- Virtuelle Realität (3)
- Welle (3)
- Wärmepumpe (3)
- cryptography (3)
- deep learning (3)
- neural networks (3)
- printed electronics (3)
- ACL (2)
- Access protocols (2)
- Agile Business (2)
- Alexander von Humboldt (2)
- Artificial Intelligence (2)
- Astronomical events (2)
- Batterie (2)
- Biologische Methanisierung (2)
- Biomimetics (2)
- CAE (2)
- Chemical engineering (2)
- Cloud Computing (2)
- Computer Vision (2)
- Computersicherheit (2)
- Controlling (2)
- Current measurement (2)
- Datensicherung (2)
- Decoding (2)
- Demand side flexibility (2)
- Dienstleistung (2)
- Digitalization (2)
- Diskretisierung (2)
- Dünnschichtchromatographie (2)
- Eco-Innovation (2)
- Eco-inventive principles (2)
- Ecodesign (2)
- Electronic Commerce (2)
- Elektrofahrzeug (2)
- Emotion Recognition (2)
- Empirical Research (2)
- Energiemanagement (2)
- Energieverbrauch (2)
- Energy Flexibility (2)
- Energy Storage Systems (2)
- Energy systems modeling (2)
- Engineering Creativity (2)
- Engineering creativity (2)
- FETs (2)
- Faseroptik (2)
- Festigkeit (2)
- Finite difference methods (2)
- Frequency (2)
- Generative Art (2)
- Geophysik (2)
- Grid Integration (2)
- HCI (2)
- Harmonic analysis (2)
- Herz (2)
- Hochtemperatur (2)
- Human-Robot Collaboration (2)
- Human-centered computing (2)
- Humanoid Robots (2)
- Improvisation (2)
- Industrie 4.0 (2)
- Information systems (2)
- Integrated circuit interconnections (2)
- Intelligentes Stromnetz (2)
- International Day of Light, IDL (2)
- International Year of Light, IYL (2)
- Internet der Dinge (2)
- Internet of Things (2)
- Inventive principles (2)
- Kalman Filter (2)
- Knowledge-based innovation (2)
- Kreativität (2)
- Leistung (2)
- Lightweight design (2)
- Live Broadcasting (2)
- MEMS (2)
- Machine learning (2)
- Maschinenbau (2)
- Maschinenelement (2)
- Microwave devices (2)
- Mikroelektronik (2)
- Mikrowellentechnik (2)
- Mobile Applications (2)
- Mobile Learning (2)
- Monitoring (2)
- Multiuser detection (2)
- NB-IoT (2)
- Navigation (2)
- Neural networks (2)
- Optics and Photonics (2)
- Optimierung (2)
- Optimization and control (2)
- PKI (2)
- PV System (2)
- Partikel (2)
- Payloads (2)
- Physical layer (2)
- Physik (2)
- Physikdidaktik (2)
- Predictive Maintenance (2)
- Process Design (2)
- Process engineering (2)
- Prototyp (2)
- Semiconductor device packaging (2)
- Simulation (2)
- Simulation-based Interaction (2)
- Smart Grid (2)
- Smart Textiles (2)
- Social Robots (2)
- Soziale Roboter (2)
- Spannung (2)
- Stability (2)
- Stromregelung (2)
- Studium (2)
- Sustainabilty (2)
- Switches (2)
- TLS (2)
- Temperaturmessung (2)
- Thermische Solaranlage (2)
- Thermologger (2)
- Tragfähigkeit (2)
- Transceivers (2)
- UWB radars (2)
- University students (2)
- Virtual reality (2)
- Visual Programming (2)
- Voice User Experience (2)
- Wissenschaft (2)
- Wärmekonvektion (2)
- Zugbeanspruchung (2)
- accelerometer (2)
- access protocols (2)
- accountability (2)
- artificial dancer (2)
- artificial intelligence (2)
- autoattack (2)
- biomechanics (2)
- catheter ablation (2)
- certificate management (2)
- content adaptation (2)
- convolutional neural networks (2)
- cybersecurity (2)
- dance and technology (2)
- decoding (2)
- design methods (2)
- device independent learning (2)
- e-learning (2)
- education and research (2)
- efficient training (2)
- environmental education (2)
- explainability (2)
- fairness (2)
- gamification (2)
- iSign (2)
- image classification (2)
- imaging algorithms (2)
- interactive visualization (2)
- learning scenarios (2)
- loneliness (2)
- medical imaging (2)
- microwave (2)
- motion synthesis (2)
- network coding (2)
- process engineering (2)
- programming (2)
- responsibility (2)
- running (2)
- scattering measurements (2)
- security (2)
- semantics (2)
- sport (2)
- standardization (2)
- sustainability (2)
- trust (2)
- understandability (2)
- virtual reality (2)
- 1.5-Degree target (1)
- 100% Renewable (1)
- 2D-TLC (1)
- 3D Printed Force Sensor (1)
- 3D bin picking (1)
- 3D displays (1)
- 3D interaction (1)
- 3D modeling (1)
- 3D virtual reality (1)
- 3D-Druck (1)
- 3D-Druck von leitfähigen Materialien (1)
- 3D-Time-of-Flight Cameras (1)
- 4D-Druck (1)
- 4D-Printing (1)
- 5G (1)
- 5G private networks (1)
- 6LoWPAN (1)
- AC machines (1)
- AI aided Innovation (1)
- AI-Aided Innovation (1)
- AIN Cantilever (1)
- AR (1)
- Abbreviate Injury Scale (1)
- Abgas (1)
- Abkühlung (1)
- Absatz (1)
- Abtastfrequenz (1)
- Academic Advising (1)
- Accident Analysis (1)
- Achilles tendonitis (1)
- Actuators (1)
- Additive Fertigung (1)
- Additive Manufacture (1)
- Additive manufacturing (1)
- Adressdaten (1)
- Adsorption (1)
- Advanced Driver Assistance System (1)
- Adversarial Attacks (1)
- Adversarial Robustness (1)
- Aflatoxin (1)
- Agent based sensor (1)
- Agility (1)
- Air Pollution (1)
- Air Traffic Control (1)
- Aircraft (1)
- Aktivierung (1)
- Akustik (1)
- Algorithmus (1)
- Aliasing (1)
- Aluminum (1)
- Amplitude and Phase Errors (1)
- Analog-Schaltkreis (1)
- Analogsignal (1)
- Analytical Query (1)
- Anbieter (1)
- Android (1)
- Angle of Arrival (1)
- Anti-Windup (1)
- Anwender-Software (1)
- Anwenderschaltkreise (1)
- Approximation (1)
- Arbeitsmaschine (1)
- Arbeitstag (1)
- Arbeitswissenschaft (1)
- Archives (1)
- Art and Photonics (1)
- Assistive Technologies (1)
- Astronomical optics (1)
- Atrial fibrillation (1)
- Atrioventricular delay (1)
- Attenuation (1)
- Audiovisual Performance (1)
- AudiovisualPerformance (1)
- Auflösungsvermögen (1)
- Augmented reality (1)
- Authentication (1)
- Authorization (1)
- Automated Ideation (1)
- Automated Invention (1)
- Automated idea generation (1)
- Automobilindustrie (1)
- Automotive After Market (1)
- Automotive Industry (1)
- Automotive Radar (1)
- Automotive engineering (1)
- BLE (1)
- Batteries (1)
- Battery storage (1)
- Bauteilfestigkeit (1)
- Bearings (1)
- Belüftung (1)
- Benutzererlebnis (1)
- Beschichtung (1)
- Beschleunigung (1)
- Betriebsverhalten (1)
- Bike Path Analysis (1)
- Bildungscontrolling (1)
- Bildverarbeitung (1)
- Binary Executable (1)
- Bio-based materials (1)
- Bio-based plastics (1)
- Biomedizin (1)
- Bioreaktor (1)
- Biosignals (1)
- Biventricular pacing (1)
- Blechformteil (1)
- Blended Learning (1)
- Blockchains (1)
- Bloom filters (1)
- Bluetooth Low Energy (1)
- Boiler (1)
- Boundary conditions (1)
- Bowtie antenna (1)
- Breitbandkommunikation (1)
- Bremsvorgang (1)
- Bruchmechanik (1)
- Building energy efficiency (1)
- Business Model Canvas (1)
- Bussystem (1)
- CAAD (1)
- CAD (1)
- CAD-System (1)
- CCD-Kamera (1)
- CNN (1)
- CNNs (1)
- COVID (1)
- COVID-19 (1)
- CRC (1)
- CRT (1)
- Calibration (1)
- Cameras (1)
- Capacitive Liquid Level Sensor (1)
- Car Repair Service Performance (1)
- Car-2-Car communication (1)
- Car-2-X communication (1)
- Car-to-Car-(C2C)-Communication (1)
- Cardiac resynchronization therapy (1)
- Cascading Style Sheets (1)
- Challenges During Pandemic 2022 (1)
- Challenges in Action Recognition (1)
- Chatbot (1)
- Checkout (1)
- Checkout-Prozess (1)
- Cheer and Challenge (1)
- Chemical Engineering (1)
- Chip-Karte (1)
- Circular polarizing filter (1)
- Cleaning (1)
- Climate change (1)
- Closed-form solution (1)
- Cloud Security (1)
- Cloud Service Provider (1)
- Cloud User (1)
- Cloud computing (1)
- Clustering (1)
- CoBot (1)
- Coal phase-out (1)
- Coatings (1)
- Cobotik (1)
- Codierung (1)
- Cogeneration (1)
- Collaboration (1)
- Collaboration of Academia and Industry (1)
- Collaborative learning (1)
- Collision Point (1)
- Collision avoidance (1)
- Communication networks (1)
- Compensation (1)
- Computer (1)
- Computer Games (1)
- Computer-assisted instruction (1)
- Computersimulation (1)
- Computerunterstützte Kommunikation (1)
- Context-Awareness (1)
- Context-awareness (1)
- Context-based Services (1)
- Control Algorithms (1)
- Conversational user experience (1)
- Convolutional neural networks (1)
- Couplers (1)
- Creativity (1)
- Cross-industry innovation (1)
- Crowdsourcing-based ideation (1)
- Current Control (1)
- Curricular concepts (1)
- Customer Centricity (1)
- Customer Solution Design (1)
- Cyber Physical Systems, (1)
- Cybersecurity (1)
- DC-AC converters (1)
- DC-DC-Wandler (1)
- DDS (1)
- DMD (1)
- DVB-T (1)
- Data Distribution Service (1)
- Data Integrity (1)
- Data Mining (1)
- Data breech (1)
- Data communications (1)
- Data mining (1)
- Data modeling (1)
- Databases (1)
- Datenanalyse (1)
- Datenaufzeichnung (1)
- Datenbank (1)
- Datenbanksystem (1)
- Datenmanagement (1)
- Datenqualität (1)
- Datenspeicher (1)
- Dauerschwingprüfung (1)
- Deaf-Blindness (1)
- Debinding (1)
- Deckenkühlung (1)
- Deckschicht (1)
- Deep Neural Network (1)
- Deepfake (1)
- Degradability (1)
- Design , Produktgestaltung (1)
- Design Methods (1)
- Design education (1)
- Design for fibre reinforced AM (1)
- Design method (1)
- Design-Structure-Matrix (1)
- Device characterization (1)
- Device independency (1)
- Diagnostics (1)
- Didaktisches Konzept (1)
- Diesel-Ethanol-Mischkraftstoff (1)
- Differential equations (1)
- Digital Beamforming (1)
- Digital Business Models (1)
- Digital Flex Twin Optimization (1)
- Digital Library (1)
- Digital Transformation (1)
- Digital Twin (1)
- Digitale Turschilder (1)
- Digitaler Zwilling (1)
- Dimension 2 (1)
- Dimension 3 (1)
- Diode-array detection (1)
- Downlink (1)
- Drahtloses lokales Netz (1)
- Drehstrom (1)
- Drehstrommotor (1)
- Drohne (1)
- Druck (1)
- Druckbeanspruchung (1)
- Durchhaltevermögen (1)
- Durchlauferhitzerprinzip (1)
- Durchmesser (1)
- E-Commerce (1)
- E-Ink (1)
- E-Paper (1)
- E-learning (1)
- EAP-TLS (1)
- EKF-SLAM (1)
- EMG features (1)
- ERP (1)
- ETAP Simulations (1)
- Easter Package (1)
- Ecercises (1)
- Eco Sciences (1)
- Eco-Design (1)
- Eco-innovation (1)
- Eco-inventive Principles (1)
- Economics (1)
- Edge AI (1)
- Edge mode (1)
- Educations (1)
- Effectiveness of fraud detection (1)
- Eigenvalues (1)
- Eindringprüfung (1)
- Einführung (1)
- Einkapselung (1)
- Einsamkeit (1)
- Elderly (1)
- Elderly care (1)
- Electromagnetic compatibility (1)
- Electronic Shopping (1)
- Elektrochemie (1)
- Elektrode (1)
- Elektrokardiogramm (1)
- Elektrolokomotive (1)
- Elektronische Medien (1)
- Embedded AI (1)
- Embedded Constantan Wire (1)
- Embedded Software (1)
- Embedded Systems (1)
- Emission (1)
- Emotion analysis (1)
- Emotional Communication (1)
- Emotional Interaction (1)
- Emotions (1)
- Emotionsforschung (1)
- Empirical Studies (1)
- Empirical research (1)
- Encapsulation (1)
- Energiebilanz (1)
- Energieeffizienz (1)
- Energiepolitik (1)
- Energiewirtschaft (1)
- Energy Flexibility for Companies (1)
- Energy Harvesting (1)
- Energy Harvesting (EH) (1)
- Energy Market (1)
- Energy Marketing of Industrial Flexibilities (1)
- Energy Planning (1)
- Energy System Analysis (1)
- Energy System Optimization (1)
- Energy Transition (1)
- Energy management (1)
- Energy policy (1)
- Energy storage (1)
- Engineering Education (1)
- Engineering education in the age of digitalization (1)
- Enhanced Security (1)
- Enterprise computing (1)
- Entity Resolution (1)
- Entlastungskerbe (1)
- Environmental monitoring (1)
- Equations (1)
- Equivalent circuits (1)
- Erdwärme (1)
- Ergebnissicherung (1)
- Ermüdung (1)
- Ermüdungslebensdauer (1)
- Error (1)
- Ersatz (1)
- Erweiterte Realität <Informatik> (1)
- Erziehung (1)
- Estimation (1)
- European structural and investment funds (1)
- Extrusion (1)
- Eye-Tracking (1)
- Eyetracking, Technisches Zeichnen (1)
- Eöelktrokardiogramm (1)
- FEM (1)
- FPGA (1)
- FSK Wake-Up (1)
- FT-Raman-Spektroskopie (1)
- FUSION (1)
- Fahrzeug (1)
- Fahrzeugantrieb (1)
- Failure analysis (1)
- Faserstoff (1)
- Fault Classification (1)
- Fault detection (1)
- Feasibility study (1)
- Featherweight Go (1)
- Feature extraction (1)
- Federal Republic of Germany (1)
- Federated Learning (1)
- Fehler (1)
- Fehleranalyse (1)
- Fertigungstechnik (1)
- Festoxidbrennstoffzelle (1)
- Fiber reinforcement (1)
- Field Programmable Gate Array (FPGA) (1)
- Filament (1)
- Filter Dimension (1)
- Filters (1)
- Finite element analysis (1)
- Finite-Differenz-Methode (1)
- Finite-Differenzen Methode (1)
- Finite-Differenzen-Methode (1)
- Flexibilisierung des Lernortes (1)
- Flugregelung (1)
- Flugzeugsteuerwerk (1)
- Flüssigkeit (1)
- Flüssigkristall (1)
- Formgebung (1)
- Formzahlen (1)
- Fotovoltaik (1)
- Fractionated atrial signals (1)
- Fractionated ventricular signals (1)
- Frameworks (1)
- Fraud detection rates (1)
- Fused Filament Fabrication (1)
- Fused Layer Modeling (1)
- Fuzzy-Logik (1)
- Fördertechnik (1)
- GIS (1)
- GPS-Empfänger (1)
- GPU Computing (1)
- GPU computing (1)
- Gait phase detection (1)
- Game Design (1)
- Games (1)
- Ganztagsschule (1)
- Gasanalyse (1)
- Gebäude (1)
- Gebäudeheizung (1)
- Gebäudeleittechnik (1)
- Gedruckte Elektronik (PE) (1)
- Gefäßverschluß (1)
- Gehirn (1)
- Gender in Science and Technology Studies (STS), digitalization, interactive documentary, participation (1)
- Generative Design (1)
- Geothermie (1)
- Gerichtliche Wissenschaften (1)
- Geschäftsmodell (1)
- Gesellschaft (1)
- Gestaltung (1)
- Gesundheit (1)
- Gesundheitsgefährdung (1)
- Getriebewelle (1)
- Gewebe (1)
- Gewerbebetrieb (1)
- Gewichtseinsparung (1)
- Glasfaserkabel (1)
- Glasfaseroptik (1)
- Gleichstrom (1)
- Google Maps (1)
- Gratings (1)
- Greifsystemen (1)
- Gummi (1)
- Gyroskop (1)
- HPTLC (1)
- HR (1)
- Halbkreisnut (1)
- Hands ON (1)
- Handschrift (1)
- Handswritten Character Recognition (1)
- Hardmakros (1)
- Hash Function (1)
- Hash Table (1)
- Head-mounted displays (1)
- Health (1)
- Heat pumps (1)
- Heilkunde (1)
- Helmholtz coil (1)
- Herstellung (1)
- Herzkrankheit (1)
- Herzschrittmacher (1)
- Heuristische Evaluation, (1)
- Hidden Champions (1)
- High-Cycle Fatigue (1)
- Hochschule (1)
- Hochspannung (1)
- Hohlform (1)
- Hot forging (1)
- Hubschrauber (1)
- Hubvorrichtung (1)
- Human Computrer Interaction (1)
- Human computer interaction (1)
- Humanoid robot (1)
- Humanoid robots programming (1)
- Humanoider Roboter (1)
- Hybrid system (1)
- Hybridantrieb (1)
- Hyperledger (1)
- Höhensensor (1)
- IDL (1)
- IEC/IEEE 60802 security (1)
- IEEE802.11p/WAVE (1)
- IEEE802.15.4 (1)
- IIoT (1)
- IVD (1)
- IYL (1)
- Ideation Performance (1)
- Ideation efficiency (1)
- Ideation performance function (1)
- Identity Resolution (1)
- Image restoration (1)
- Immersive Technology (1)
- Impairments (1)
- Implementation (1)
- Imprägnierung (1)
- In-flight entertainment (1)
- InceptionTime (1)
- Inclined surface (1)
- Industrial Blockchain (1)
- Inertial (1)
- Inertial measurement unit (1)
- Informatik (1)
- Informationssystem (1)
- Informationstechnik (1)
- Informationsvermittlung (1)
- Ingenieuerwissenschaften (1)
- Ingenieurwissenschaften (1)
- Injection Molding (1)
- Injection Molds (1)
- Injection Moulding (1)
- Ink (1)
- Instandhaltung (1)
- Integrated product development (1)
- Integriertes Lernen (1)
- Intellectual Properties (1)
- Intelligent Agents (1)
- Intelligent Buildings (1)
- Interaction metaphor (1)
- Interferometrie (1)
- International Day of Light (1)
- International Year of Light (1)
- Internet Overlay networks (1)
- Internet portal (1)
- Inventive problem solving (1)
- Inverters (1)
- IoT Security (1)
- IoT security (1)
- Irregularities (1)
- Isolation (1)
- Joining processes (1)
- Jones calculus (1)
- KI-Labor Südbaden (1)
- Kabel (1)
- Kalibrierung (1)
- Kamera (1)
- Karbon (1)
- Kennlinie (1)
- Kinetik (1)
- Klausur (1)
- Klein- und Mittelbetrieb (1)
- Klimaanlage (1)
- Knowledge sharing (1)
- Knowledge-based Innovation (1)
- Kontextbewusstsein (1)
- Kontrolltheorie (1)
- Korrelation (1)
- Korrosion (1)
- Kostensenkung (1)
- Kraftmessung (1)
- Kraftstoff (1)
- Kraftwerk (1)
- Kryoptologie (1)
- Kryptographie (1)
- Kugel (1)
- Kundendaten (1)
- Kupplung (1)
- Kühlluft (1)
- Kühlsystem (1)
- LCA-Microcontroller (1)
- LPWAN (1)
- LXP (1)
- Landau-Lifshitz-Gilbert equations (1)
- Language acquisition (1)
- Large Grid-Connected PV Systems (1)
- Laserabtasten (1)
- Lastenverschiebung (1)
- Leap Motion Controller (1)
- Learning (1)
- Learning Analytics (1)
- Left atrial ECG (1)
- Left atrial delay (1)
- Left cardiac ECG (1)
- Legionellenproblematik (1)
- Leistungsbewertung (1)
- Leistungsdichte (1)
- Lernen (1)
- Lernsoftware (1)
- Lerntrails (1)
- Lernumgebung (1)
- Lernzieltaxonomie (1)
- Lichtdispersion (1)
- Limiting (1)
- Lithium compounds (1)
- Lithium niobate (1)
- Load Flow Analysis (1)
- Location-Based Services (1)
- Location-based Services (1)
- Logic gates (1)
- Logic-Cell-Array (1)
- Lokalisierung (1)
- Loneliness (1)
- Long Term Evolution (1)
- Lottozahlengenerators (1)
- Low-Cost Füllstandssensor (1)
- Low-Cycle Fatigue (1)
- Low-Power (1)
- Low-Power-SoC-Systeme (1)
- Luftkühlung (1)
- Lupe (1)
- Lärmschutz (1)
- Lückenskript (1)
- Lüftung (1)
- Lüftungsanlage (1)
- MIMO (1)
- MINT (1)
- MLOps (1)
- MPC (1)
- Machine-to- Machine-(M2M)-Communication (1)
- Magnetic sensors (1)
- Magnetismus (1)
- Makespan (1)
- Management (1)
- Manufacturing (1)
- Manufacturing automation (1)
- Manufacturing industries (1)
- Many-core architectures (1)
- Martensitic die steel (1)
- Maschinenbaustudium (1)
- Material Extrusion (1)
- Material Properties (1)
- Mathematical model (1)
- Mathematik (1)
- Mathematiktrails (1)
- Mathematikunterricht (1)
- Mathematisches Modell (1)
- Mathtrails (1)
- Mean Square Error (1)
- Measurement (1)
- Mechanik (1)
- Media Object (1)
- Media Stream (1)
- Medizin (1)
- Medizintechnik (1)
- Mehrfachkerbwirkung (1)
- Membran (1)
- Mensch-Maschine-Kommunikation (1)
- Mensch-Roboter-Kollaboration (1)
- Mentor-Graphics (1)
- Metallization (1)
- Meters (1)
- Methanisierung (1)
- Microelectronics (1)
- Microgrid (1)
- Microgrid(s) (1)
- Microgrids (1)
- Microwave integrated circuits (1)
- Microwave integrated circuits Equivalent circuits (1)
- Mikrocontroller (1)
- Mikroprozessorkernels (1)
- Mikrostruktur (1)
- Mimikanalyse (1)
- Mobile Computing (1)
- Mobile device (1)
- Mobile devices (1)
- Mobilkommunikation (1)
- Mode Collapse (1)
- Model Calibration (1)
- Model Predictive Control (1)
- Model Search (1)
- Modell (1)
- Modellhubschrauber (1)
- Modellierung (1)
- Modellsimulation (1)
- Module Manufacturing (1)
- Monocular Depth Estimation (1)
- Monomodefaser (1)
- Montagevorrichtung (1)
- Monte-Carlo (1)
- Monte-Carlo Simulation (1)
- Monte-Carlo method (1)
- Motivation (1)
- Movement (1)
- Multi-Material 3D-Printing (1)
- Multi-core architectures (1)
- Multimedia information systems (1)
- Myocontrol (1)
- NETCONF security (1)
- NFC (1)
- Nachtsichtgerät (1)
- Nanotechnologie (1)
- Natural fibers (1)
- Nature-Inspired Innovation (1)
- Nature-inspired principles (1)
- Naturwissenschaften (1)
- Network Test (1)
- Network topology (1)
- Netzintegration (1)
- Neurodivergent (1)
- New Product Development (1)
- New product development (1)
- Nickel (1)
- Niedrige Energie (1)
- Niedrigenergiehaus (1)
- Nonlinear Regression (1)
- Nonlinear waves (1)
- Nonlinearity (1)
- Nyquist-Shannon (1)
- OT security (1)
- Oberfläche (1)
- Object-Based Services (1)
- Objekterkennung (1)
- Octave Convolution (1)
- Off-Shore-Anlage (1)
- Onboarding (1)
- Online Magazine (1)
- Online Studies (1)
- Online simulation (1)
- Online-Shop (1)
- Ontology (1)
- Ontology-based Classification (1)
- Optimization (1)
- Optimization with Digital Twins (1)
- Optische Zeichenerkennung (1)
- Oxidation (1)
- PCB-printing (1)
- PI control (1)
- PROFINET IO (1)
- PROFINET Security (1)
- PV Applications (1)
- PV Applications, Smart PV, PV Battery Systems, PV Power Supplies (1)
- PV Module (1)
- Parallelization (1)
- Parameter Estimation (1)
- Parameter estimation (1)
- Particle emissions (1)
- Partnerschaft (1)
- Passivhaus (1)
- Pattern Recognition (1)
- Peak shaving (1)
- Peer to peer computing (1)
- Peer to peer network (1)
- Performance (1)
- Performance evaluation (1)
- Periodic Table of AI (1)
- Permanent magnet machines (1)
- Petri-Netz (1)
- Phontonik (1)
- Photography (1)
- Photonics (1)
- Photovoltaic (1)
- Photovoltaik (1)
- Physical Unclonable Functions (1)
- Physical unclonable function (1)
- Physiotherapy (1)
- Plant commissioning (1)
- Planung (1)
- Plastic Sheet (1)
- Plasticity model (1)
- Poisoning (1)
- Polarization (1)
- PolyJet Modelling (1)
- Polymere (1)
- Power Loss (1)
- Predictions (1)
- Predictive Models (1)
- Preis (1)
- Printing parameters (1)
- Problemlösen (1)
- Process design (1)
- Process innovation (1)
- Process intensification (1)
- Processing (1)
- Product Design (1)
- Produktionsprozess (1)
- Profilwelle (1)
- Programmierung (1)
- Propagation losses (1)
- Prosthetic control (1)
- Prozessablauf (1)
- Prozessautomation (1)
- Prozessorkern (1)
- Präsentation (1)
- Prüfung (1)
- Psychometrie (1)
- Pufferspeicher (1)
- Pulse width modulation (1)
- QFD (1)
- Quality Function Deployment (1)
- Qualität (1)
- Qualitätskontrolle (1)
- Quantitative Marketing Research (1)
- Quarter-wave plate (1)
- Quellcode (1)
- Querbohrung (1)
- RFID (1)
- RPA (1)
- RUL (1)
- Racemisierung (1)
- Radio frequency (1)
- Radiologie (1)
- Rahmen (1)
- Rails (1)
- Raman-Spektroskopie (1)
- Random call model (1)
- Range imaging RGB-D (1)
- Rapid Prototype (1)
- Rapid Prototyping (1)
- Rapid Tooling (1)
- Raumtemperatur (1)
- Rauscheigenschaft (1)
- Rauschminderung (1)
- Real-Time Communication (1)
- Real-time (1)
- Realtime simulation (1)
- Rechneranwendung (1)
- Recommendation (1)
- Recommendation Techniques (1)
- Recruiting (1)
- Recycling (1)
- Regularization (1)
- Reinforcement Learning (1)
- Reliability (1)
- Renewable Energy Markets (1)
- Representation Learning (1)
- ResNet (1)
- Resonatorfilter (1)
- Reynolds-Zahl (1)
- Ringnut (1)
- Risikobewertung (1)
- Risk Assessment (1)
- Road-Quality Prediction (1)
- Robot Applications (1)
- Robot vision systems (1)
- Robotic Process Automation (1)
- Robotic Soccer (1)
- Robotik (1)
- Robots (1)
- Rohr (1)
- Rohrbiegen (1)
- Rohrleitung (1)
- Rotors (1)
- Routing (1)
- Russian Ukrainian war (1)
- SAW-Bauelement (1)
- Safe Speed and Separation Monitoring. (1)
- Sampling (1)
- Sandwich-Konstruktion (1)
- Sandwichbauweise (1)
- Scanner (1)
- Schaltkreis (1)
- Schaltungsdesign (1)
- Schlatungen (1)
- Schubbeanspruchung (1)
- Schutz (1)
- Screencast (1)
- Second-order Optimization (1)
- Security Engineering (1)
- Segmentierung (1)
- Seilwinde (1)
- Selbsttests (1)
- Selective Laser Sinter (1)
- Self-Calibration (1)
- Semiconductor Device (1)
- Semiconductor device measurement (1)
- Sensing Element (1)
- Sensor phenomena and characterization (1)
- Sensors (1)
- Sensortechniik (1)
- Separation Monitoring (1)
- Sequential Model-Based Optimization (1)
- Service Specification (1)
- Servqual (1)
- Session Initiation Protocol (1)
- Sicherheitstechnik (1)
- Signal averaging ECG (1)
- Signalabtastung (1)
- Signaltechnik (1)
- Signalumsetzung (1)
- Simulationsprogramm (1)
- Simulationsversuch (1)
- Sintering (1)
- Smart Energy Metering (1)
- Smart Gardening (1)
- Smart Grid Operation (1)
- Smart Grids (1)
- Smart Home (1)
- Smart Materials (1)
- Smart PV (1)
- Smart grids (1)
- Smart wearables (1)
- Smart-UPS (1)
- SmartMAC (1)
- Social Interaction (1)
- Social Isolation (1)
- Social Media (1)
- Social isolation (1)
- Soft Robot (1)
- Soft- und Hardcore-Prozessoren (1)
- Software Protection (1)
- Software Robot (1)
- Software Security (1)
- Software algorithms (1)
- Software for measurements (1)
- Software-Engineering (1)
- Software-Qualitätssicherung (1)
- Software-Sicherheit (1)
- Software-Testautomatisierung (1)
- Software-Tool (1)
- Softwarearchitektur (1)
- Softwareforschung (1)
- Solar Radiation (1)
- Solitary waves (1)
- Sonnenenergienutzung (1)
- Spectral-temporal mapping (1)
- Speichertechnik (1)
- Spektralanalyse (1)
- Spektroskopie (1)
- Spektrum (1)
- Stahlband (1)
- Stahlrohr (1)
- Standort (1)
- Statistik (1)
- Statistikvideos (1)
- Stereobildverarbeitung (1)
- Stochastik (1)
- Strahl (1)
- Streaming Service (1)
- Stromerzeugung (1)
- Stromzustandsregler (1)
- Strukturanalyse (1)
- Strömungsmechanik (1)
- Strömungsmessung (1)
- Strömungsprofil (1)
- Strömungsvorgang (1)
- Student activities (1)
- Studienanfänger (1)
- Subspace Clustering (1)
- Subspace clustering (1)
- Sulphonamides (1)
- Surface acoustic wave (1)
- Surface acoustic waves (1)
- Sustainable (1)
- Sustainable Innovation (1)
- Sustainable product development (1)
- Sustainable technology (1)
- Sweaty (1)
- Synchronisation (1)
- Synchronisierung (1)
- Synchronmaschine (1)
- System (1)
- System-on-Chip (1)
- Systematic innovation (1)
- Systementwurf (1)
- TLC (1)
- TSN security (1)
- TTCN3 (1)
- Tablet (1)
- Tablet Lückenskript (1)
- Tailored-Strip (1)
- Tailored-Tube (1)
- Target Group Oriented Communication (1)
- Target Group Oriented Design (1)
- Target Path (1)
- Target Vehicle (1)
- Task Analysis (1)
- Technik (1)
- Technische Mechanik (1)
- Technischer Bericht (1)
- Temperature sensors (1)
- Temperaturfeld (1)
- Temperaturverteilung (1)
- Testbed (1)
- Testumgebung (1)
- Textile (1)
- Theory of computation (1)
- Thermische Solarenergie (1)
- Thermomechanik (1)
- Thermomechanische Ermüdung (1)
- Threat Modeling (1)
- Tiefziehen (1)
- Time Sensitive Networking (1)
- Time Synchronization (1)
- Time series data (1)
- Time-series Classification (1)
- TinyML (1)
- TinyOS (1)
- Torque (1)
- Total Harmonic Distortion (1)
- Touch (1)
- Traceability (1)
- Training (1)
- Transducers (1)
- Transesophageal electrocardiography (1)
- Transfer learning (1)
- Transistor (1)
- Traubenzucker (1)
- Traubenzucker-Brennstoffzelle (1)
- Trigeneration (1)
- Trinkwassererzeugung (1)
- Trust management (1)
- Trägheit (1)
- Ultra-Low Energy (1)
- Ultra-Low Power (1)
- Ultraschall (1)
- Ultraweitband (1)
- Umwandlungswirkungsgrad (1)
- Umwelt (1)
- Umweltschutz (1)
- Unity Engine (1)
- Unsupervised Conditional Training (1)
- Unsupervised Learning (1)
- Unternehmensführung (1)
- Usability (1)
- Use Case (1)
- User Acceptance (1)
- User Experience Test (1)
- User behavior (1)
- User generated content (1)
- User interface (1)
- User-generated content (1)
- VRU eSafety (1)
- Variational Autoencoders (1)
- Vehicle safety (1)
- Ventricular tachycardia (1)
- Verfahren (1)
- Verfügbarkeit (1)
- Vergleich (1)
- Verifiability (1)
- Verkehr (1)
- Verlassenheit (1)
- Versuchsergebnis (1)
- Vervielfältigung (1)
- Verwaltung (1)
- Verzahnung (1)
- Vibrotactile Feedback (1)
- Videoclip (1)
- Virtual Research Environment (1)
- Virtual experiments (1)
- Virtual private networks (1)
- Virtuelles Laboratorium (1)
- Visual Impairments (1)
- Visual programming (1)
- Visual programming languages (1)
- Visualization (1)
- Voice assistants (1)
- Voice user interfaces (1)
- Voxel (1)
- Voxelization (1)
- Wahrscheinlichkeitsrechnung (1)
- Wake-Up Receiver (1)
- Wanddicke (1)
- Warenkorbabbruch (1)
- Warmwasserbereiter (1)
- Wasser (1)
- Wasserstand (1)
- Web service architecture (1)
- Web-Applikation (1)
- Wedge waves (1)
- Wellenabsatz (1)
- Werkstofffehler (1)
- Wertanalyse (1)
- Windenergie (1)
- Windgeschwindigkeit (1)
- Windkraftanlage (1)
- Windturbine (1)
- Windturm (1)
- Wirbelströmung (1)
- Wireless IoT (1)
- Wireless M-Bus (1)
- Wireless Sensor Nodes (1)
- Wirtschaftswissenschaften (1)
- Wishbone (1)
- World Wide Web (1)
- Wärmepumpen (1)
- Wärmeübertragung (1)
- Yolov5 (1)
- Zahlung (1)
- Zahnwelle (1)
- Zellbibliothek (1)
- Zelle (1)
- Zenware (1)
- Zusatzstoff (1)
- Zweitaktmotor (1)
- Zwischenmodulation (1)
- accuracy (1)
- acoustic phonons (1)
- adversarial (1)
- adversarial attacks (1)
- adversarial detection (1)
- agent (1)
- agent based systems (1)
- akustisches Bauelement (1)
- anisotropy (1)
- approximate histograms (1)
- approximation (1)
- attribute manipulation (1)
- autoML (1)
- autonomous systems (1)
- bearing (1)
- bench-marking (1)
- benchmarking (1)
- bio-inspired models (1)
- biocompatibility test (1)
- biodegradable (1)
- biologische Brennstoffzelle (1)
- biomaterials (1)
- biomimetics (1)
- building energy model (1)
- building management systems (1)
- business applications (1)
- camera-based navigation (1)
- cantilever (1)
- car2x networks (1)
- carbon fiber (1)
- cellular radio (1)
- cifar (1)
- climate (1)
- cloud (1)
- cloud computing (1)
- cloud security (1)
- cluster (1)
- collaborative learning (1)
- color vision (1)
- computer network management (1)
- content formatting (1)
- content synchronization (1)
- correlation (1)
- crack growth simulation (1)
- credentials (1)
- cross hole (1)
- cross-industry innovation (1)
- crossbar (1)
- curb (1)
- curricular concepts (1)
- curriculum learning (1)
- cyclic plasticity (1)
- data aggregation (1)
- data architecture (1)
- data migration (1)
- data model (1)
- data replication (1)
- datengestützte Schulentwicklung (1)
- deep reinforcement learning (1)
- defense (1)
- degradation stages (1)
- design education (1)
- detection (1)
- device detection (1)
- device independency (1)
- dictionary passing (1)
- differential mode-delay (1)
- digital games (1)
- digital library (1)
- digital twin (1)
- digitale Signalverarbeitung (1)
- display technologies (1)
- distributed computing (1)
- distributed systems (1)
- dreidimensionale Darstellung (1)
- dynamic hyperlinks (1)
- e-Mobilität (1)
- eLearning (1)
- eingebettete Datenverarbeitung (1)
- eingebettetes Gerät (1)
- electrolyte-gated transistors (1)
- elektronischer Würfel (1)
- embedded systems (1)
- emulation (1)
- energy consumption (1)
- energy efficiency (1)
- equivalent circuit model (1)
- ethical frameworks (1)
- evaluation (1)
- exchange magnons (1)
- face editing (1)
- face recognition (1)
- fail-operational (1)
- ferromagnetic resonance (1)
- fingerprinting (1)
- flexible job shop (1)
- footwear (1)
- force controlled robot (1)
- fourier (1)
- gan (1)
- gedruckter Sensorik (1)
- generalized content (1)
- generation Y (1)
- generation Z (1)
- generative adversarial networks (1)
- genetic algorithms (1)
- glass (1)
- glazing systems (1)
- grey-box model (1)
- ground penetrating radar (1)
- guided waves (1)
- gyroscope (1)
- hair (1)
- hardness (1)
- heat pump (1)
- heating and cooling (1)
- height estimation (1)
- high performance (1)
- home automation (1)
- hot work tool steel (1)
- humanoid robot walking (1)
- hybrid systems (1)
- identification (1)
- image color analysis (1)
- imagenet (1)
- implantierbares System (1)
- industrial Ethernet (1)
- industrial IoT (1)
- industrial communication (1)
- industry (1)
- inertial measurement unit (1)
- inertiales Navigationssystem (1)
- information network (1)
- innovation management (1)
- insoles (1)
- interconnected data (1)
- irrigation (1)
- joint torque sensors (1)
- kabellos (1)
- kanal (1)
- kinetic (1)
- konstitutive Gleichung (1)
- language learning (1)
- laser material processing (1)
- laser triangulation (1)
- learning scenario (1)
- lid (1)
- lithium-ion battery (1)
- load profiles (1)
- local electricity markets (1)
- localization (1)
- low power wireless (1)
- m-learning (1)
- machine-to-machine communication (1)
- magnetization dynamics (1)
- magneto-acoustics (1)
- magnetoactive smart materials (1)
- magnetresponsive Werkstoffe (1)
- mahalanobis (1)
- maintenance scheduling (1)
- masked Stereolithography (1)
- master data (1)
- measurement (1)
- mechanische Haftung (1)
- media technology (1)
- media tyechnolog (1)
- mehrachsige Spannung (1)
- mental health apps (1)
- message complexity (1)
- metal oxide transistor (1)
- metatarsals (1)
- metaverse (1)
- middleware (1)
- mikroelektromechanisches System (1)
- millimeter-wave (1)
- mobile app (1)
- mobile applications (1)
- mobile learning (1)
- mobiler Roboter (1)
- model driven design (1)
- model-predictive control (1)
- molybdenum (1)
- multi-material (1)
- multidimensional flashcard (1)
- multimode fibre (1)
- multimode fibre connectors (1)
- multipath (1)
- multiple notch-effective (1)
- mutual authentication (1)
- natürliche Leistung (1)
- neural architecture search (1)
- neural ordinary differential equations (1)
- neuronales Netz (1)
- new product development (1)
- noise measurement (1)
- non interfering measurements (1)
- nonlinearity (1)
- nose (1)
- numerische Simulation (1)
- numerisches Verfahren (1)
- offensive security techniques (1)
- optical on-line/in-line measurements (1)
- optimization (1)
- orthosis (1)
- overuse (1)
- overuse injury (1)
- parking (1)
- particle coarsening (1)
- pattern recognition (1)
- peer to peer network (1)
- peer-to-peer energy trading (1)
- perception (1)
- performance (1)
- physical unclonable function (1)
- physically unclonable function (PUF) (1)
- pigment paste (1)
- powder filled gripper (1)
- power distribution (1)
- predictive maintenance (1)
- presentation skills (1)
- prevention (1)
- primary authentication (1)
- printed Antennas (1)
- printing technologies (1)
- privacy (1)
- programming languages (1)
- project-based learning (1)
- pruning (1)
- quality function deployment (QFD) (1)
- radio networks (1)
- railway system (1)
- random call model (1)
- real time (1)
- reference data (1)
- rekeying (1)
- reliability (1)
- remanufacturing (1)
- remote model-based laboratory (1)
- repeatability (1)
- resource efficiency (1)
- risk factor (1)
- robot (1)
- robotics (1)
- scanning electron microscope (SEM) (1)
- scheduling (1)
- secondary surveillance radar (1)
- secure communication (1)
- self-organizing networks (1)
- semicircular groove (1)
- sensor network (1)
- sensor node (1)
- service engineering (1)
- service research (1)
- simulation (1)
- skin cancer (1)
- skin cancer detection (1)
- slope (1)
- smart grid (1)
- smart materials (1)
- smart metering (1)
- software defined radio (1)
- softwaregenerierter Code (1)
- solar module (1)
- soliton (1)
- sparse backpropagation (1)
- spatial imagination (1)
- spectral defense (1)
- spectraldefense (1)
- statistical methods, ROS (1)
- stochastic computing (1)
- stress concentration factors (1)
- style (1)
- style transfer (1)
- subsystem design (1)
- surface treatment (1)
- synthetical profiles (1)
- system authenticity (1)
- taxonomy (1)
- teaching and learning culture (1)
- technical drawings (1)
- telecommunication equipment testing (1)
- temperature dependency (1)
- temperature sensor (1)
- thermodynamischer Wirkungsgrad (1)
- thinned ASIC in foil (1)
- time series data (1)
- transmit beamforming (1)
- ultrafast laser interaction with materials (1)
- vacuum (1)
- vibration (1)
- vibration harvester (1)
- virtual experiments (1)
- virtual lab (1)
- virtual worlds (1)
- walking (1)
- wedge wave (1)
- wide area networks (1)
- wireless comunication (1)
- wireless sensor (1)
- wireless sensor networks (1)
- Ältere (1)
- Ökologie (1)
- übertragbare Wirkleistung (1)
Institute
- Fakultät Elektrotechnik und Informationstechnik (E+I) (bis 03/2019) (288)
- Fakultät Maschinenbau und Verfahrenstechnik (M+V) (205)
- Fakultät Elektrotechnik, Medizintechnik und Informatik (EMI) (ab 04/2019) (183)
- Fakultät Wirtschaft (W) (155)
- ivESK - Institut für verlässliche Embedded Systems und Kommunikationselektronik (112)
- Fakultät Medien und Informationswesen (M+I) (bis 21.04.2021) (109)
- INES - Institut für nachhaltige Energiesysteme (48)
- IMLA - Institute for Machine Learning and Analytics (44)
- ACI - Affective and Cognitive Institute (39)
- Fakultät Medien (M) (ab 22.04.2021) (30)
Open Access
- Closed Access (398)
- Open Access (342)
- Closed (200)
- Bronze (91)
- Diamond (23)
- Grün (13)
- Gold (6)
- Hybrid (6)
RETIS – Real-Time Sensitive Wireless Communication Solution for Industrial Control Applications
(2020)
Ultra-Reliable Low Latency Communications (URLLC) has been always a vital component of many industrial applications. The paper proposes a new wireless URLLC solution called RETIS, which is suitable for factory automation and fast process control applications, where low latency, low jitter, and high data exchange rates are mandatory. In the paper, we describe the communication protocol as well as the hardware structure of the network nodes for implementing the required functionality. Many techniques enabling fast, reliable wireless transmissions are used – short Transmission Time Interval (TTI), Time-Division Multiple Access (TDMA), MIMO, optional duplicated data transfer, Forward Error Correction (FEC), ACK mechanism. Preliminary tests show that reliable end-to-end latency down to 350 μs and packet exchange rate up to 4 kHz can be reached (using quadruple MIMO and standard IEEE 802.15.4 PHY at 250 kbit/s).
Industrie 4.0 bedeutet nicht nur einen Wandel der technischen Möglichkeiten und Arbeitsbedingungen, sondern auch einen Bedarf an neuen, sich kontinuierlich weiterentwickelnden Kompetenzen und die Bereitschaft der Beschäftigten, Veränderungen mitzugestalten. Spielerische Ansätze der Kompetenzentwicklung können v.a. bei weiterbildungsfernen Mitarbeitern hilfreich sein, um das komplexe Thema verständlich zu vermitteln. Der Beitrag beschreibt ein Seminarkonzept mit integriertem Brettspiel, mit dem Teilnehmer anhand eines fiktiven Unternehmens (Müller GmbH) die Transformation eines Unternehmens in die Industrie 4.0 spielerisch nachvollziehen. Dieses Konzept erweist sich in einer ersten Evaluation als durchaus vielversprechend.
Den Hauptbestandteil des Operationssystems stellt der Zugriff auf SD-Karten mit dem Dateisystem FAT16 von Microsoft dar. Für die Bedienung wurde ein Kommandozeileninterpreter implementiert. Als Ein- und Ausgabegerät dient ein PC mit einem speziellen Terminalprogramm, welcher über USB mit dem Emulationsboard des SIRIUS Softcores verbunden ist. Das System wird über die Eingabe von Befehlen am Terminal gesteuert.
Der SIRIUS Softcore kann nur vom Flash des Emulationsboards booten. Da das Betriebssystem selbst jedoch auf der SD-Karte gespeichert werden soll, ist ein Basis-Betriebssystem erforderlich, welches im Flash abgelegt ist. Das Basis-Betriebssystem lädt gleich nach dem Start das eigentliche Betriebssystem von der SD-Karte. Falls jedoch keine SD-Karte gesteckt ist, ermöglicht das Basis-Betriebssystem mit einem Kommandozeileninterpreter einige Grundfunktionen.
Der Cache-Speicher für den Softprozessor SIRIUS ist ein 4-fach assoziativer Cache-Speicher, der mit einem DDR-Interface auf einen externen Speicher zugreifen kann. Er verwaltet und beschleunigt Zugriffe vom Prozessor auf diesen Speicher. Der Cache-Speicher arbeitet intern mit 32 Bit und der doppelten Prozessortaktfrequenz und ermöglicht Systeme mit größeren Speicheranforderungen ohne signifikante Performanceverluste. Der Cache-Speicher wurde mit der Hardwarebeschreibungssprache VHDL erstellt und mit dem bestehenden Mikrocontrollersystem verbunden.
Das Gesamtsystem wurde zunächst simuliert und anschließend mit dem Cyclone III FPGA Starter Kit von Altera, welches ein 32 MB DDR-RAM-Modul zur Verfügung stellt, durch Ausführen eines Testprogramms erfolgreich verifiziert. Für den kompletten Cache-Speicher werden inklusive der Pins für den externen Oszillator und des Reset-Tasters 3805 Logik-Zellen, 27 M9K-Blöcke, 44 Pins und eine PLL benötigt.
The ability to detect a signal masked by noise is improved in normal-hearing (NH) listeners when interaural phase differences (IPD) between the ear signals exist either in the masker or the signal. We determined the impact of different coding strategies in bilaterally implanted cochlear implant (BiCI) users with and without fine-structure coding (FSC) on masking level differences. First, binaural intelligibility level differences (BILD) were determined in NH listeners and BiCI users using their clinical speech processors. NH subjects (n=8) showed a significant mean BILD of 7.5 dB. In contrast, BiCI users (n=9) without FSC as well as with FSC revealed a barely significant mean BILD (0.4 dB respectively 0.6 dB). Second, IPD thresholds were measured in BiCI users using either their speech processors with FS4 or direct stimulation with FSC. With the latter approach, synchronized stimulation providing an interaural accuracy of stimulation timing of 1.67 µs was realized on pitch matched electrode pairs. The resulting individual IPD threshold was lower in most of the subjects with direct stimulation than with their speech processors. These outcomes indicate that some BiCI users can benefit from increased temporal precision of interaural FSC and adjusted interaural frequency-place mapping presumably resulting in improved BILD.
Für die Implementation in ASIC's wurde ein kompakter Mikroprozessor-Kernel als Standardzellen-Makro entworfen. Durch konsequenten Einsatz von Hochsprachen und CAE-Werkzeugen (VHDL, Synthese) konnte ein vollständiges Design in nur vier Monaten durchgeführt werden. Der Prozessor wird in einem Testchip erprobt.
Learning programming fundamentals is considered as one of the most challenging and complex learning activities. Some authors have proposed visual programming language (VPL) approaches to address part of the inherent complexity [1]. A visual programming language lets users develop programs by combining program elements, like loops graphically rather than by specifying them textually. Visual expressions, spatial arrangements of text and graphic symbols are used either as syntax elements or secondary notation. VPLs are normally used for educational multimedia, video games, system development, and data warehousing/business analytics purposes. For example, Scratch, a platform of Massachusetts Institute of Technology, is designed for kids and after school programs.
Design of mobile software applications is considered as one of the most challenging application domains due to the build in sensors as part of a mobile device, like GPS, camera or Near Field Communication (NFC). Sensors enable creation of context-aware mobile applications in which applications can discover and take advantage of contextual information, such as user location, nearby people and objects, and the current user activity. As a consequence, context-aware mobile applications can sense clues about the situational environment making mobile devices more intelligent, adaptive, and personalized. Such context aware mobile applications seem to be motivating and attractive case studies, especially for programming beginners (“my own first app”).
In this work, we introduce a use-case centered approach as well as clear separation of user interface design and sensor-based program development. We provide an in-depth discussion of a new VPL based teaching method, a step by step development process to enable programming beginners the creation of context aware mobile applications. Finally, we argue that addressing challenges for programming beginners by our teaching approach could make programming teaching more motivating, with an additional impact on the final software quality and scalability.
The key contributions of our study are the following:
- An overview of existing attempts to use VPL approaches for mobile applications
- A use case centered teaching approach based on a clear separation of user interface design and sensor-based program development
- A teaching case study enabling beginners a step by step creation of context-aware mobile applications based on the MIT App Inventor (a platform of Massachusetts Institute of Technology)
- Open research challenges and perspectives for further development of our teaching approach
References:
[1] Idrees, M., Aslam, F. (2022). A Comprehensive Survey and Analysis of Diverse Visual Programming Languages, VFAST Transactions on Software Engineering, 2022, Volume 10, Number 2, pp 47-60.
In this paper we suggest to combine the areas of media streaming services, mobile devices, and manufacturing processes to support monitoring, controlling and supervising production processes in order to achieve high levels of efficiency and environmentally friendly production. It contains a comprehensive and detailed explanation of the proposed E-Learning streaming framework, especially the adaption of streaming services to mobile environments. The key components of our approach are 1) an XML-based streaming service specification language, 2) adaption of multimedia E-Learning services to mobile environments, and 3) a media delivery platform for searching, registration, and creation of streaming services for mobile devices.
Integrating voice / video communication into business processes can accelerate resolution time, reduce mistakes, and establish a full audit-trail of the interactions. Some VoIP service providers offer website based or plugin based solutions, which are, however, difficult to integrate with other applications. A promising approach to overcome these disadvantages is the development of appropriate Web Services to allow applications interacting with a VoIP system. We propose a generic framework for VoIP applications consisting of an XML-based service specification language and a set of reusable Web Service components. Service providers using the proposed service-oriented architecture can offer to their customers a protocol-neutral Web Service interface, thus enabling the deployment of a general and integrated VoIP solution.
The goal of eLearning services integration in manufacturing is, through the development of new multimedia solutions, to accelerate and enhance the ability of the manufacturing industry to capitalise on the emergence of a powerful global information infrastructure. The key components of our approach are: (1) an XML based streaming service specification language; (2) automatic configuration of distributed eLearning streaming service implementations; (3) a set of Web services for searching, registration, and creation of streaming services; (4) caching and replication policies based on timing information derived from the service specifications. We also introduce a new concept for cache management during runtime, e.g., content is distributed to cache servers located at the edge of a network close to the client.
This paper presents an approach where closer integration between learning and work is achieved by integrating multimedia services into manufacturing processes. The goal of E-Learning services integration in manufacturing processes is, through the development of new multimedia services, to accelerate and enhance the ability of manufacturing industry to capitalise on the emergence of a powerful global information infrastructure. In this paper we suggest to combine the areas of media streaming services and manufacturing processes, by providing electronic learning offerings as collections of media streaming services. The key components of our approach are 1) an xml based streaming service specification language, 2) automated configuration of distributed E-Learning streaming applications, 3) Web Services for searching, registration, and creation of E-Learning streaming services.
Most E-Learning projects tend to separate learning activities from everyday work. This paper presents an approach where closer integration between learning and work is achieved by integrating multimedia services into manufacturing processes. The goal of E-Learning services integration in manufacturing is, through the development of new multimedia solutions, to accelerate and enhance the ability of manufacturing industry to capitalise on the emergence of a powerful global information infrastructure. In this paper we suggest to combine the areas of media streaming services and manufacturing processes, by providing electronic learning offerings as collections of media streaming services. The key components of our approach are 1) an xml based streaming service specification language, 2) automated configuration of distributed E-Learning streaming applications, 3) web services for searching, registration, and creation of E-Learning streaming services.
We propose a new streaming media service development environment comprising of a streaming media service model, a XML based service specification language and several implementation and configuration management tools. In our project, the described approach is used for integration of streaming based eLearning services in manufacturing processes of a subcontractor to the automotive industry. The key components of our approach are 1) an xml based streaming service specification language, 2) a set of web services for searching, registration, and creation of streaming services, 3) caching and replication policies based on timing information derived from the service specifications.
In this paper, we propose a new streaming media service development environment comprising of a streaming media service model, a XML based service specification language and several implementation and configuration management tools. Our approach is based on a high level streaming service specification language, which allows specifying a service in terms of media objects, QoS, and distribution policies. Driven by such a streaming service specification and a streaming component library implemented with Java Media Framework, the required distributed application infrastructure is generated automatically by a service manager. To support flexible instantiation and termination of services as well as change management during runtime, e.g. migration or substitution of streaming components, we introduce instantiation and termination rules, and reconfiguration rules.
Visual programming languages (VPL) let users develop software programs by combining visual program elements, like lists of objects, loops or conditional statements rather than by specifying them textually.
Humanoid robots programming is a very attractive and motivating application domain for students, especially for programming beginners. Humanoid robots are constructed in such a way that they mimic the human body by using actuators that perform like muscles. Typically, a humanoid robot consists of sensors and actuators, i.e. torso, a head, two arms, and two legs, though some humanoid robots may replicate only part of the body, for example, from the waist up. In some cases, humanoid robots are equipped with heads designed to replicate additional human facial features such as eyes. Additional sensors are needed by a robot to gather information about the conditions of the environment to allow the robot to make necessary decisions about its position or certain actions that the situation requires, e.g. an arm movement or an open/close hand action. Other examples for sensor are reflective infrared sensors used to detect objects in proximity.
In this work, we introduce a use-case centered approach based on sensors and actors of a robot and a workflow model to visually describe the sequence of actions including conditional actions or concurrent actions. We provide an in-depth discussion of a new VPL based teaching method for programming humanoid robots based on VPLs. Open research challenges, limits and perspectives for further development of our teaching approach are discussed as well.
The main advantage of mobile context-aware applications is to provide effective and tailored services by considering the environmental context, such as location, time, nearby objects and other data, and adapting their functionality according to the changing situations in the context information without explicit user interaction. The idea behind Location-Based Services (LBS) and Object-Based Services (OBS) is to offer fully-customizable services for user needs according to the location or the objects in a mobile user's vicinity. However, developing mobile context-aware software applications is considered as one of the most challenging application domains due to the built-in sensors as part of a mobile device. Visual Programming Languages (VPL) and hybrid visual programming languages are considered to be innovative approaches to address the inherent complexity of developing programs. The key contribution of our new development approach for location and object-based mobile applications is a use case driven development approach based on use case templates and visual code templates to enable even programming beginners to create context-aware mobile applications. An example of the use of the development approach is presented and open research challenges and perspectives for further development of our approach are formulated.
Sensors and actuators enable creation of context-aware applications in which applications can discover and take advantage of contextual information, such as user location, nearby people and objects. In this work, we use a general context definition, which can be applied to various devices, e.g., robots and mobile devices. Developing context-based software applications is considered as one of the most challenging application domains due to the sensors and actuators as part of a device. We introduce a new development approach for context-based applications by using use-case descriptions and Visual Programming Languages (VPL). The introduction of web-based VPLs, such as Scratch and Snap, has reinvigorated the usefulness of VPLs. We provide an in-depth discussion of our new VPL based method, a step by step development process to enable development of context-based applications. Two case studies illustrate how to apply our approach to different problem domains: Context-based mobile apps and context-based humanoid robot applications.
Novel manufacturing technologies, such as printed electronics, may enable future applications for the Internet of Everything like large-area sensor devices, disposable security, and identification tags. Printed physically unclonable functions (PUFs) are promising candidates to be embedded as hardware security keys into lightweight identification devices. We investigate hybrid PUFs based on a printed PUF core. The statistics on the intra- and inter-hamming distance distributions indicate a performance suitable for identification purposes. Our evaluations are based on statistical simulations of the PUF core circuit and the thereof generated challenge-response pairs. The analysis shows that hardware-intrinsic security features can be realized with printed lightweight devices.
Uncontrollable manufacturing variations in electrical hardware circuits can be exploited as Physical Unclonable Functions (PUFs). Herein, we present a Printed Electronics (PE)-based PUF system architecture. Our proposed Differential Circuit PUF (DiffC-PUF) is a hybrid system, combining silicon-based and PE-based electronic circuits. The novel approach of the DiffC-PUF architecture is to provide a specially designed real hardware system architecture, that enables the automatic readout of interchangeable printed DiffC-PUF core circuits. The silicon-based addressing and evaluation circuit supplies and controls the printed PUF core and ensures seamless integration into silicon-based smart systems. Major objectives of our work are interconnected applications for the Internet of Things (IoT).
In this paper a practical way for fatigue life prediction of rubber products under multiaxial loads is shown. This is done by means of fracture mechanical concepts and the energy release rate as the failure criterion. Due to a FEA post-processor the potential energy release rate might be calculated at every material point supposed there was a crack. And therefore the risk of failure and with the help of a strain number curve the time to fatigue is able to be calculated by FEA. This concept is applied for an estimation of the life time of a test specimen with tensile loading from fatigue data of a shear loaded specimen of different design. This rather more theoretical concept of the energy release rate is complemented by experimental crack growth data by a Tear Fatigue Analyzer with its great advantage of reduction of testing time and costs compared to those of fatigue tests. For some materials a thorough characterization of crack growth and fatigue behavior is presented and is applied to estimate the time to fatigue by FEA for a real component under multiaxial loads.
There are additional long-term effects which also change the micro-structure of the polymer network and consequently the effective number of polymer chains in the material. These effects are summarized by ageing processes and will be used in the following to explain the basic assumptions of the model which can be generalized to simulate the viscous behaviour of the material. An implementation of these concepts into FEM codes is straightforward and has been carried out to the solver ABAQUS, Baaser & Ziegler (2006), Baaser et al. (2009).
Vorgestellt wird ein Konzept zur biologischen Methanisierung von Wasserstoff direkt in Biogasreaktoren, mit dem durch Membranbegasung der Methangehalt des Biogases auf > 96 % erhöht werden kann. Essentiell zum Erreichen solch hoher Methanwerte sind die Einhaltung eines optimalen pH-Bereichs und die Vermeidung von H2-Akkumulation. Im Falle einer Limitierung der Methanbildungsrate durch den eigentlichen anaeroben Abbauprozess der Biomasse ist auch eine externe Zufuhr von CO2 zur weiteren Methanbildung denkbar. Das Verfahren soll weiter optimiert und in einem von der Deutschen Bundesstiftung Umwelt geförderten Projekt in der Biogasanlage einer regionalen Käserei in der Praxis getestet werden. Die hier angestrebte Kombination aus dezentraler Abfallverwertung und Eigenenergieerzeugung eines lebensmittelverarbeitenden Betriebs unter Einbindung in ein intelligentes Erneuerbare Energien - Konzept soll einen zusätzlichen Mehrwert liefern.
Narrowband Internet-of-Things (NB-IoT) is a 3rd generation partnership project (3GPP) standardized cellular technology, adopted for 5G and optimized for massive Machine Type Communication (mMTC). Applications are anticipated around infrastructure monitoring, asset management, smart city and smart energy applications. In this paper, we evaluate the suitability of NB-IoT for private (campus) networks in industrial environments, including complex cloud-based applications around process automation. An end-to-end system has been developed, comprising of a sensor unit connected to a NB-IoT modem, a base station (gNodeB) equipped with a beamforming array and a local (private) network architecture comprising a sensor management system in the edge cloud. The experimental study includes field tests in realistic industrial environments with latency, reliability and coverage measurements. The results show a good suitability of NB-IoT for process automation with high scalability, low-power requirements and moderate latency requirements.
Remote code attestation protocols are an essential building block to offer a reasonable system security for wireless embedded devices. In the work at hand we investigate in detail the trustability of a purely software-based remote code attestation based inference mechanism over the wireless when e.g. running the prominent protocol derivate SoftWare-based ATTestation for Embedded Devices (SWATT). Besides the disclosure of pitfalls of such a protocol class we also point out good parameter choices which allow at least a meaningful plausibility check with a balanced false positive and false negative ratio.
Covert- and side-channels as well as techniques to establish them in cloud computing are in focus of research for quite some time. However, not many concrete mitigation methods have been developed and even less have been adapted and concretely implemented by cloud providers. Thus, we recently conceptually proposed C 3 -Sched a CPU scheduling based approach to mitigate L2 cache covert-channels. Instead of flushing the cache on every context switch, we schedule trusted virtual machines to create noise which prevents potential covert-channels. Additionally, our approach aims on preserving performance by utilizing existing instead of artificial workload while reducing covert-channel related cache flushes to cases where not enough noise has been achieved. In this work we evaluate cache covert-channel mitigation and performance impact of our integration of C 3 -Sched in the XEN credit scheduler. Moreover, we compare it to naive solutions and more competitive approaches.
Digital, virtual environments and the metaverse are rapidly taking shape and will generate disruptive changes in the areas of ethics, privacy, safety, and how the relationships between human beings will be developed. To uncover some of some of the implications that will impact those areas, this study investigates the perceptions of 101 younger people from the generations Y and Z. We present a first exploratory analysis of the findings, focusing on knowledge and self-perception. Results show that these young generations are seriously doubting their knowledge on the metaverse and virtual worlds – regarding both the definition and the usage. It is interesting to see only a medium confidence level, considering that the participants are young and from an academic environment, which should increase their interest in and the affinity towards virtual worlds. Males from both generations perceive themselves as significantly more knowledgeable than females. Regarding a fitting definition, almost 40% agreed on the metaverse as a “universal and immersive virtual world that is made accessible using virtual reality and augmented reality technologies”. Regarding the topic in general, several participants (almost 40%) considered themselves sceptics or “just” users (38%). Interestingly, generation Y participants were more likely than the younger generation Z participants to identify themselves as early adopters or innovators. In result, the considerable amount of “mixed feelings” regarding digital, virtual environments and the metaverse shows that in-depth studies on the perception of the metaverse as well as its ethical and integrity implications are required to create more accessible, inclusive, safe, and inclusive digital, virtual environments.
The importance of obtaining simultaneous particle size and concentration values has grown up with continuing discussion of the health effects, of internal combustion engine generated particulate emissions and in particular of Diesel soot emissions. In the present work an aerosol measurement system is described that delivers information about particle size and concentration directly from the undiluted exhaust gas.
Using three laser diodes of different wavelengths which form one parallel light beam, each spectral attenuation is analysed by a single detector and the particle diameter and concentration is evaluated by the use of the Mie theory and shown on-line at a frequency of 1 Hz. The system includes an optical long-path-cell (White principle) with an adjustable path length from 2.5 to 15 m, which allows the analysis within a broad concentration range.
On-line measurements of the particulate emissions in the hot, undiluted exhaust of Diesel engines are presented under stationary and transient engine’s load conditions. Mean particle diameters well below 100 nm are detected for modern Diesel engines. The measured particle concentration corresponds excellently with the traditional gravimetrical measurements of the diluted exhaust. Additionally, measurements of particle emissions (mostly condensed hydricarbons) from a two-stroke engine are presented and discussed.
Durch eine stetige Preissteigerung der fossilen Energieträger werden auch im Bereich der mobilen Arbeitsmaschinen neben einer hohen Zuverlässig u.a. Forderungen nach steigenden Gesamtwirkungsgraden, mit der hierdurch einhergehenden Energieeffizienz, forciert. Auch bei mobilen Arbeitsmaschinen ist der häufig eingeschränkt zur Verfügung stehende Bauraum für Traktionsantriebe eine Herausforderung. Ziel dieser Veröffentlichung ist ein allgemeingültiger Vergleich verschiedener elektrischer Antriebsarten als Traktionsantrieb für mobile Arbeitsmaschinen.
A system for the on-line/in-line measurement of soot particle sizes and concentrations in the undiluted exhaust gas of diesel engines was developed and successfully tested. The unit uses the individual attenuations of three different laser wavelengths and is combined with an optical cell (white principle) with adjustable path lengths from 2.5 to 15 meters.
The development of Internet of Things (IoT) embedded devices is proliferating, especially in the smart home automation system. However, the devices unfortunately are imposing overhead on the IoT network. Thus, the Internet Engineering Task Force (IETF) have introduced the IPv6 Low-Power Wireless Personal Area Network (6LoWPAN) to provide a solution to this constraint. 6LoWPAN is an Internet Protocol (IP) based communication where it allows each device to connect to the Internet directly. As a result, the power consumption is reduced. However, the limitation of data transmission frame size of the IPv6 Routing Protocol for Low-power and Lossy Network’s (RPL’s) had made it to be the running overhead, and thus consequently degrades the performance of the network in terms of Quality of Service (QoS), especially in a large network. Therefore, HRPL was developed to enhance the RPL protocol to minimize redundant retransmission that causes the routing overhead. We introduced the T-Cut Off Delay to set the limit of the delay and the H field to respond to actions taken within the T-Cut Off Delay. Thus, this paper presents the comparison performance assessment of HRPL between simulation and real-world scenarios (6LoWPAN Smart Home System (6LoSH) testbed) in validating the HRPL functionalities. Our results show that HRPL had successfully reduced the routing overhead when implemented in 6LoSH. The observed Control Traffic Overhead (CTO) packet difference between each experiment is 7.1%, and the convergence time is 9.3%. Further research is recommended to be conducted for these metrics: latency, Packet Delivery Ratio (PDR), and throughput.
The Internet of Things (IoT) application has becoming progressively in-demand, most notably for the embedded devices (ED). However, each device has its own difference in computational capabilities, memory usage, and energy resources in connecting to the Internet by using Wireless Sensor Networks (WSNs). In order for this to be achievable, the WSNs that form the bulk of the IoT implementation requires a new set of technologies and protocol that would have a defined area, in which it addresses. Thus, IPv6 Low Power Area Network (6LoWPAN) was designed by the Internet Engineering Task Force (IETF) as a standard network for ED. Nevertheless, the communication between ED and 6LoWPAN requires appropriate routing protocols for it to achieve the efficient Quality of Service (QoS). Among the protocols of 6LoWPAN network, RPL is considered to be the best protocol, however its Energy Consumption (EC) and Routing Overhead (RO) is considerably high when it is implemented in a large network. Therefore, this paper would propose the HRPL to enchance the RPL protocol in reducing the EC and RO. In this study, the researchers would present the performance of RPL and HRPL in terms of EC, Control traffic Overhead (CTO) and latency based on the simulation of the 6LoWPAN network in fixed environment using COOJA simulator. The results show HRPL protocol achieves better performance in all the tested topology in terms of EC and CTO. However, the latency of HRPL only improves in chain topology compared with RPL. We found that further research is required to study the relationship between the latency and the load of packet transmission in order to optimize the EC usage.
In the last decade, IPv6 over Low power Wireless Personal Area Networks (IEEE802.15.4), also known as 6LoWPAN, has well evolved as a primary contender for short range wireless communications and holds the promise of an Internet of Things, which is completely based on the Internet Protocol. The authors' team has developed a 6LoWPAN protocol stack in C language, the stack without the necessity to use a specific design environment or operating system. It is highly flexible, modular, and portable and can be enhanced by several interesting modules, like a Wake-On-Radio-(WOR) MAC layer or a TLS1.2 based security sublayer. The stack is made available as open source at https://github.com/hso-esk/emb6. It was extensively tested on the Automated Physical Testbed (APTB) for Wireless Systems, which is available in the authors' lab and allows a flexible setup and full control of arbitrary topologies. The results of the measurements demonstrate a very good stability and short-term with long-term performance also under dynamic conditions.
The overview of public key infrastructure based security approaches for vehicular communications
(2015)
Modern transport infrastructure becomes a full member of globally connected network. Leading vehicle manufacturers have already triggered development process, output of which will open a new horizon of possibilities for consumers and developers by providing a new communication entity - a car, thus enabling Car2X communications. Nevertheless some of available systems already provide certain possibilities for vehicles to communicate, most of them are considered not sufficiently secured. During last 15 years a number of big research projects funded by European Union and USA governments were started and concluded after which a set of standards were published prescribing a common architecture for Car2X and vehicles onboard communications. This work concentrates on combining inner and outer vehicular communications together with a use of Public Key Infrastructure (PKI).
Wireless communication systems more and more become part of our daily live. Especially with the Internet of Things (IoT) the overall connectivity increases rapidly since everyday objects become part of the global network. For this purpose several new wireless protocols have arisen, whereas 6LoWPAN (IPv6 over Low power Wireless Personal Area Networks) can be seen as one of the most important protocols within this sector. Originally designed on top of the IEEE802.15.4 standard it is a subject to various adaptions that will allow to use 6LoWPAN over different technologies; e.g. DECT Ultra Low Energy (ULE). Although this high connectivity offers a lot of new possibilities, there are several requirements and pitfalls coming along with such new systems. With an increasing number of connected devices the interoperability between different providers is one of the biggest challenges, which makes it necessary to verify the functionality and stability of the devices and the network. Therefore testing becomes one of the key components that decides on success or failure of such a system. Although there are several protocol implementations commonly available; e.g., for IoT based systems, there is still a lack of according tools and environments as well as for functional and conformance testing. This article describes the architecture and functioning of the proposed test framework based on Testing and Test Control Notation Version 3 (TTCN-3) for 6LoWPAN over ULE networks.
Extended Performance Measurements of Scalable 6LoWPAN Networks in an Automated Physical Testbed
(2015)
IPv6 over Low power Wireless Personal Area Networks, also known as 6LoWPAN, is becoming more and more a de facto standard for such communications for the Internet of Things, be it in the field of home and building automation, of industrial and process automation, or of smart metering and environmental monitoring. For all of these applications, scalability is a major precondition, as the complexity of the networks continuously increase. To maintain this growing amount of connected nodes a various 6LoWPAN implementations are available. One of the mentioned was developed by the authors' team and was tested on an Automated Physical Testbed for Wireless Systems at the Laboratory Embedded Systems and Communication Electronics of Offenburg University of Applied Sciences, which allows the flexible setup and full control of arbitrary topologies. It also supports time-varying topologies and thus helps to measure performance of the RPL implementation. The results of the measurements prove an excellent stability and a very good short and long-term performance also under dynamic conditions. In all measurements, there is an advantage of minimum 10% with regard to the average times, like global repair time; but the advantage with reagr to average values can reach up to 30%. Moreover, it can be proven that the performance predictions from other papers are consistent with the executed real-life implementations.
In the last decade, IPv6 over Low power Wireless Personal Area Networks, also known as 6LoWPAN, has well evolved as a primary contender for short range wireless communication and holds the promise of an Internet of Things, which is completely based on the Internet Protocol. In the meantime, various 6LoWPAN implementations are available, be it open source or commercial. One of these implementations, which was developed by the authors' team, was tested on an Automated Physical Testbed for Wireless Systems at the Laboratory Embedded Systems and Communication Electronics of Offenburg University of Applied Sciences, which allows the flexible setup and full control of arbitrary topologies. It also supports time-varying topologies and thus helps to measure performance of the RPL implementation. The results of the measurements show a very good stability and short-term and long-term performance also under dynamic conditions. In addition, it can be proven that the performance predictions from other papers are consistent with real-life implementations.
The CAN bus still is an important fieldbus in various domains, e.g. for in-car communication or automation applications. To counter security threats and concerns in such scenarios we design, implement, and evaluate the use of an end-to-end security concept based on the Transport Layer Security protocol. It is used to establish authenticated, integrity-checked, and confidential communication channels between field devices connected via CAN. Our performance measurements show that it is possible to use TLS at least for non time-critical applications, as well as for generic embedded networks.
Having 22 GW of nominal power installed Germany is the leading nation in wind energy conversion. While the number of suitable installation sites ashore is limited, and the average windspeed and thus the utilization level offshore is significantly higher, more and more offshore wind farms are planned. In order to reduce the cost of building the foundations and of connecting the wind turbines to the power grid, the single plant is designed as powerful as possible and therefore the components become huge and weighty. For instance: In order to lift the nacelle with around 500 tons of weight up on the tower - which can be up to 120 m above the water level - at the time special ships and cranes are designed and built. But those firstly will be very expensive and secondly will be available only on a limited scale. Hence the installation cost of those huge wind turbines significantly influence the rentability of a wind farm. Against this background a joint research project supported by the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) was started comprising the project partners Ed. Züblin AG, Berg-idl GmbH (an engineering company and a maker of special purpose machines in Altlußheim, Germany), the IPEK (institute for product development) at the university of Karlsruhe and the Hochschule Offenburg, university of applied science. Project target is the conceptual design of a heavy-duty elevator, which can be used to install the tower segments and the nacelle of a wind turbine offshore without a crane. The most relevant challenges in this context result of holding up extreme loads by means of comparatively filigree carrying structures. The paper shows some examples of structural analysis and optimization work accomplished during the project. For the structural analysis of the heavy loaded components ANSYS workbench was used. The development process was also supported by optimization tools like TOSCA and OPTIMUS. The linking of the FE solver and the optimizer provides important hints concerning improvement of the topology and the dimensions of the components. Examples of designs illustrate the development process and the methods applied.
Mathematik lässt sich in vielen Objekten finden. Sei es die lineare Steigung eines Handlaufs zum Schulgebäude oder die nahezu zylindrische Form einer Litfaßsäule in der Innenstadt. Das Bestreben, Schüler*innen diese Zusammenhänge entdecken zu lassen, steht im Zentrum des MathCityMap Projekts (Ludwig et al., 2013). Auf sogenannten mathematischen Wanderpfaden (bzw. Mathtrails) werden Schüler*innen durch eine App zu Mathematikaufgaben an realen Objekten bzw. in realen Situationen ihrer Umwelt geleitet. Um die Aufgaben zu lösen, werden Daten erhoben, z. B. durch Messungen oder Zählen. Entscheidend ist, dass die Aufgaben so gestellt sind, dass der Schritt der Datenbeschaffung nur vor Ort stattfinden kann und somit direkt mit dem Objekt bzw. der Situation verknüpft wird.
Practical exercises are a crucial part of many curricula. Even simple exercises can improve the understanding of the underlying subject. Most experimental setups require special hardware. To carry out e. g. a lens experiments the students need access to an optical bench, various lenses, light sources, apertures and a screen. In our previous publication we demonstrated the use of augmented reality visualization techniques in order to let the students prepare with a simulated experimental setup. Within the context of our intended blended learning concept we want to utilize augmented or virtual reality techniques for stationary laboratory exercises. Unlike applications running on mobile devices, stationary setups can be extended more easily with additional interfaces and thus allow for more complex interactions and simulations in virtual reality (VR) and augmented reality (AR). The most significant difference is the possibility to allow interactions beyond touching a screen. The LEAP Motion controller is a small inexpensive device that allows for the tracking of the user’s hands and fingers in three dimensions. It is conceivable to allow the user to interact with the simulation’s virtual elements by the user’s very hand position, movement and gesture. In this paper we evaluate possible applications of the LEAP Motion controller for simulated experiments in augmented and virtual reality. We pay particular attention to the devices strengths and weaknesses and want to point out useful and less useful application scenarios. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
In many scientific studies lens experiments are part of the curriculum. The conducted experiments are meant to give the students a basic understanding for the laws of optics and its applications. Most of the experiments need special hardware like e.g. an optical bench, light sources, apertures and different lens types. Therefore it is not possible for the students to conduct any of the experiments outside of the university’s laboratory. Simple optical software simulators enabling the students to virtually perform lens experiments already exist, but are mostly desktop or web browser based.
Augmented Reality (AR) is a special case of mediated and mixed reality concepts, where computers are used to add, subtract or modify one’s perception of reality. As a result of the success and widespread availability of handheld mobile devices, like e.g. tablet computers and smartphones, mobile augmented reality applications are easy to use. Augmented reality can be easily used to visualize a simulated optical bench. The students can interactively modify properties like e.g. lens type, lens curvature, lens diameter, lens refractive index and the positions of the instruments in space. Light rays can be visualized and promote an additional understanding of the laws of optics. An AR application like this is ideally suited to prepare the actual laboratory sessions and/or recap the teaching content.
The authors will present their experience with handheld augmented reality applications and their possibilities for light and optic experiments without the needs for specialized optical hardware.
Walking interfaces offer advantages in navigation of VE systems over other types of locomotion. However, VR helmets have the disadvantage that users cannot see their immediate surroundings. Our publication describes the prototypical implementation of a virtual environment (VE) system, capable of detecting possible obstacles using an RGB-D sensor. In order to warn users of potential collisions with real objects while they are moving throughout the VE tracking area, we designed 4 different visual warning metaphors: Placeholder, Rubber Band, Color Indicator and Arrow. A small pilot study was carried out in which the participants had to solve a simple task and avoid any arbitrarily placed physical obstacles when crossing the virtual scene. Our results show that the Placeholder metaphor (in this case: trees), compared to the other variants, seems to be best suited for the correct estimation of the position of obstacles and in terms of the ability to evade them.