Refine
Year of publication
- 2021 (293) (remove)
Institute
- Fachbereich Gestaltung (94)
- Fachbereich Medizintechnik und Technomathematik (56)
- IfB - Institut für Bioengineering (36)
- Fachbereich Elektrotechnik und Informationstechnik (27)
- Fachbereich Luft- und Raumfahrttechnik (24)
- Fachbereich Wirtschaftswissenschaften (24)
- Fachbereich Energietechnik (23)
- Fachbereich Bauingenieurwesen (15)
- INB - Institut für Nano- und Biotechnologien (15)
- Fachbereich Chemie und Biotechnologie (12)
Document Type
- Article (109)
- Bachelor Thesis (89)
- Conference Proceeding (52)
- Part of a Book (17)
- Book (9)
- Master's Thesis (4)
- Report (4)
- Doctoral Thesis (2)
- Review (2)
- Conference: Meeting Abstract (1)
Keywords
- Corporate Design (6)
- Animation (5)
- Fotografie (4)
- Illustration (4)
- Nachhaltigkeit (4)
- UX Design (4)
- App (3)
- Botanik (3)
- Dokumentation (3)
- Gamification (3)
- Gesundheit (3)
- Holz (3)
- Layout (3)
- Lebensmittel (3)
- Mode (3)
- Museum (3)
- Redesign (3)
- Baukastensystem (2)
- Bookazine (2)
- Corona (2)
- Corporate Identity (2)
- Denkmalschutz (2)
- Deutschland (2)
- Erscheinungsbild (2)
- Film (2)
- Hydrogen (2)
- Impfen (2)
- Inklusion (2)
- Japan (2)
- Kampagne (2)
- Kinder (2)
- Klimawandel (2)
- Kultur (2)
- Kurzfilm (2)
- Magazingestaltung (2)
- Medizin (2)
- Mobilität (2)
- Modularität (2)
- Möbel (2)
- Möbeldesign (2)
- NOx emissions (2)
- Nachhaltig (2)
- Out-of-plane load (2)
- PCM (2)
- Principal component analysis (2)
- Regal (2)
- Typografie (2)
- UI Design (2)
- autonomous driving (2)
- building information modelling (2)
- capacitive field-effect sensor (2)
- constructive alignment (2)
- earthquakes (2)
- electro mobility (2)
- examination (2)
- harmonic radar (2)
- hydrogen (2)
- industrial facilities (2)
- installations (2)
- long-term retention (2)
- management (2)
- multimodal (2)
- piping (2)
- practical learning (2)
- robotic process automation (2)
- seismic loading (2)
- 20. Jahrhundert (1)
- 2D (1)
- 3D object detection (1)
- 3D printing (1)
- 3D-printing (1)
- Aachen (1)
- Abbildungen (1)
- Adaption (1)
- Adaptive Systems (1)
- Aircraft sizing (1)
- Alltagsbegleitung (1)
- Alter (1)
- AlterG (1)
- Altkleider (1)
- Analog-Digital-Hybrid (1)
- Angst (1)
- App Design (1)
- Aquaristik (1)
- Arbeitswelt (1)
- Architektur (1)
- Archäologie (1)
- Artenvielfalt (1)
- Atomwaffentests (1)
- Aufklärung (1)
- Augmented Reality (1)
- Authenticity (1)
- BIM (1)
- Bacillus sp (1)
- Bahn (1)
- Bahnhof (1)
- Bahnwaggons (1)
- Barrierefrei (1)
- Behinderung (1)
- Bekleidungsindustrie (1)
- Bekleidungsserie (1)
- Bemessung (1)
- Berichterstattung (1)
- Bewegung (1)
- Bewusstsein (1)
- Bibliothek (1)
- Bildband (1)
- Bio (1)
- Biodiversität (1)
- Bioluminszenz (1)
- Biosolubilization (1)
- Blended Learning (1)
- Blender (1)
- Bloom’s Taxonomy (1)
- Bone quality and biomechanics (1)
- Bootstrap (1)
- Borkenkäfer (1)
- Botanischer Garten (1)
- Boundary integral equations (1)
- Branding (1)
- Buch (1)
- Buchbinderei (1)
- Bundesrepublik Deutschland (1)
- Bürozubehör (1)
- C2C (1)
- CFD (1)
- Capacitive field-effect sensor (1)
- CellDrum (1)
- Central receiver power plant (1)
- Coefficient of ocular rigidity (1)
- Collagen (1)
- Comic (1)
- Comicbuch (1)
- Competence Developing Games (1)
- Computational modeling (1)
- Concentrated systems (1)
- Concentrating solar power (1)
- Corneo-scleral shell (1)
- Cross-platform (1)
- Crossmedial (1)
- Customer Experience Management (1)
- Customer Journeys (1)
- DLR-ESTEC GOSSAMER roadmap for solar sailing (1)
- Davidstern (1)
- Deep learning (1)
- Depression (1)
- Der Goldene Kompass (1)
- Design (1)
- Design System (1)
- Design folgt Funktion (1)
- Deuterated solvents (1)
- Deuterium NMR (1)
- Deutsch (1)
- Deutsche Stiftung (1)
- Diagnostik (1)
- Differential tonometry (1)
- Digital Game Based Learning (1)
- Digitale Kommunikation (1)
- Digitale Lehre (1)
- Digitale Zeichnung (1)
- Digitalisierung (1)
- Digitalität (1)
- Digitatlisierung (1)
- Dinosaurier (1)
- Dokumentarfilm (1)
- Dorfleben (1)
- Drag (1)
- Drinfeld modules (1)
- Drucker (1)
- E-Bike (1)
- E-Commerce (1)
- E-Government (1)
- E-Learning (1)
- E-Mobility (1)
- EEG (1)
- ESATAN (1)
- Earthquake (1)
- Earthquake Engineering (1)
- Ecommerce (1)
- Editorial (1)
- Editorialdesign (1)
- Education (1)
- Einkaufen (1)
- Emanzipation (1)
- Emissions (1)
- Emotionen (1)
- Empathie (1)
- Empathy (1)
- Empirical process (1)
- Energietechnik (1)
- Enterprise Architecture (1)
- Entstehungsprozesse (1)
- Environmental impact (1)
- Erdbebeneinwirkung (1)
- Erfolg (1)
- Ergonomie (1)
- Erinnerungen (1)
- Ernährung (1)
- Error Recovery (1)
- Erweiterte Realität (1)
- Euregiozoo (1)
- Evaluation (1)
- Excel und VBA (1)
- Exhibition Design (1)
- Eyeball (1)
- Fadenheftung (1)
- Fast-Fashion (1)
- Feminismus (1)
- Fitness (1)
- Flame residence time (1)
- Flame temperature (1)
- Float (1)
- Flucht (1)
- Flughafen (1)
- Forschung (1)
- Fotoband (1)
- Frame structure (1)
- Frauenrolle (1)
- Frequency Doubler (1)
- Frequency mixing magnetic detection (1)
- Freshmen (1)
- Fresnel power plant (1)
- Fuel-flexibility (1)
- Functional Delta Method (1)
- Furniture (1)
- GEO (1)
- GOSSAMER-1 (1)
- GPU (1)
- Game-based learning (1)
- Gamedesign (1)
- Gas turbine (1)
- Gas turbine combustion (1)
- Generativ (1)
- Geschichten (1)
- Geschlecht (1)
- Geschlechter (1)
- Geschlechterrollen (1)
- Geschlechterungerechtigkeit (1)
- Gesellschaft (1)
- Gesellschaftskritik (1)
- Gestaltung (1)
- Gesundheitssektor (1)
- Gesundheitsvorsorge (1)
- Glaucoma (1)
- Graphic Novel (1)
- HVAC (1)
- Haare (1)
- Haarindustrie (1)
- Hadamard differentiability (1)
- Hands-On-Station (1)
- Handwerk (1)
- Haptik (1)
- Harmonic Radar (1)
- Healthtech (1)
- Heilpflanzen (1)
- Helmholtz equation (1)
- Heparin (1)
- Heuristic algorithms (1)
- Hilbert Room (1)
- Historienfilm (1)
- Holocaust (1)
- Hologramm (1)
- Hospiz (1)
- Humanität (1)
- Hygiene (1)
- Hyperdifferentials (1)
- Hyphan (1)
- Höhenverstellbar (1)
- Hörbuch (1)
- IR (1)
- IR spectroscopy (1)
- IT security education (1)
- ITS (1)
- Illustrationen (1)
- Immersion (1)
- Impedance Spectroscopy (1)
- Impfempfehlung (1)
- Impftagtour (1)
- Implementation Case (1)
- Improvisation (1)
- In- plane damage (1)
- Independent type design (1)
- Informationsdesign (1)
- Infused Thermal Solutions (1)
- Innenarchitektur (1)
- Innovation (1)
- Intelligentes Parken (1)
- Interaktiv (1)
- Interaktives Design (1)
- Interior Neumann eigenvalues (1)
- Interiordesign (1)
- Israel (1)
- Jazz (1)
- Juden (1)
- Kalligrafie (1)
- Kamapgne (1)
- Keramik (1)
- Keyword analysis (1)
- Kinderbuch (1)
- Kinetik (1)
- Kleidung (1)
- Kommerzielle Interaktionen (1)
- Kommunikationsdesign (1)
- Komplikationen (1)
- Konstruktionsspielzeug (1)
- Konsum (1)
- Kontrast (1)
- Konzept (1)
- Konzeptdesign (1)
- Konzeption (1)
- Kosmetik (1)
- Krankenhaus (1)
- Krankheit (1)
- Krankheiten (1)
- Kreislaufwirtschaft (1)
- Kriegsfilm (1)
- Kulturaustausch (1)
- Kunst (1)
- Kunsthandwerk (1)
- Kyrillisch (1)
- Köln (1)
- LEO (1)
- LPS (1)
- Label-free detection (1)
- Landwirtschaft (1)
- Langevin theory (1)
- Lateinisch (1)
- Leistungssport (1)
- Lesen (1)
- LiDAR (1)
- Library (1)
- Lidarscanner (1)
- Ligaturen (1)
- Lightning protection system (1)
- Linear discriminant analysis (1)
- Lobby (1)
- Lockdown (1)
- Luftrettung (1)
- MUT measurement; scanner (1)
- Machine learning (1)
- Magazin (1)
- Magnetic nanoparticles (1)
- Manufacturer (1)
- Marke (1)
- Marshallinseln (1)
- Masonry infill (1)
- Mauerwerksbauten (1)
- Mayersche (1)
- Medical Design (1)
- Medizindesign (1)
- Menschen (1)
- Micromagnetic simulation (1)
- Micromix (1)
- Mischklasse (1)
- Mixed-integer nonlinear programming (1)
- Mobile web (1)
- Modelica (1)
- Modern (1)
- Multi-storey (1)
- Multifunktionale Wohnobjekte (1)
- Multimedia (1)
- Muscle Fascicle (1)
- Muscle Force (1)
- Museumsidendität (1)
- Musik (1)
- Musikvideo (1)
- Mythologie (1)
- Myzelium (1)
- Männlichkeit (1)
- NOx (1)
- Nachhaltiges Bauen (1)
- Natural language processing (1)
- Naturkosmetik (1)
- Neoklassizismus (1)
- Neugeborene (1)
- Neuromuskuläres System (1)
- Nonequilibrium dynamics (1)
- Not (1)
- Numerics (1)
- Ocular blood flow (1)
- Online Lehre (1)
- Operators (1)
- Opposition (1)
- Optimierung (1)
- Optimization (1)
- Optische Täuschung (1)
- Ornithologie (1)
- Ostasiatisch (1)
- Out-of-plane failure (1)
- Out-of-plane strength (1)
- Outdoorfitness (1)
- PTBS (1)
- PWA (1)
- Packaging Design (1)
- Paired sample (1)
- Paläontologie (1)
- Pandemie (1)
- Parasitic drag (1)
- Parteien (1)
- Partnerarbeiten (1)
- Pflanzen (1)
- Pflanzenwelt (1)
- Pflege (1)
- Philippinen (1)
- Phobien (1)
- Piping (1)
- Plakat (1)
- Plant virus (1)
- Postulates (1)
- Potential theory (1)
- Powertrain (1)
- Pressure-volume relationship (1)
- Pro bono (1)
- Process model (1)
- Processing (1)
- Produktdesign (1)
- Progressive Web App (1)
- Prozessagilität (1)
- Präventiv (1)
- Publikation (1)
- PushoverAnalysen (1)
- Pädiatrie (1)
- Quantenmechanik (1)
- RVA (1)
- Radar (1)
- Rare Diseases (1)
- Recycling (1)
- Regalsystem (1)
- Rehabilitationsmedizin (1)
- Rehabilitatives Training (1)
- Remote Work (1)
- Reparatur (1)
- Rescue System (1)
- Resilience (1)
- Ressourcen (1)
- Ressourcenschonung (1)
- Retrieval (1)
- Revolution (1)
- Robotic Process Automation (1)
- Robotic process automation (1)
- Robotik (1)
- Rollator (1)
- Rollenbild (1)
- Rotoskopie (1)
- SFCW (1)
- STL Dateiformat (1)
- Sardinien (1)
- Satellitenbilder (1)
- Scanner (1)
- Scheitern (1)
- Schlaf (1)
- Schlicht (1)
- Schriftgestaltung (1)
- Schriftmuster (1)
- Schrödingers cat (1)
- Schröpfen (1)
- Schwangerschaft (1)
- Schöpfung (1)
- Seismic loading (1)
- Selbstbestimmung (1)
- Seltene Erkrankungen (1)
- Sensibilisierung (1)
- Septic cardiomyopathy (1)
- Serious Game (1)
- Shampooflasche (1)
- Sharing mobility (1)
- Simone de Beauvoir (1)
- Simulation (1)
- Skeletal muscle (1)
- Sleep EEG (1)
- Small Aral Sea (1)
- Small spacecraft (1)
- Smart Building Engineering (1)
- Sneaker (1)
- Soft independent modeling of class analogy (1)
- Solar sail (1)
- Soldaten (1)
- Soziologie (1)
- Sport (1)
- Standardization (1)
- Stiffness (1)
- Storekonzept (1)
- Stuttgart (1)
- Städtischer Bergbau (1)
- TMV adsorption (1)
- Tag (1)
- Tank (1)
- Ta₂O₅ gate (1)
- Technik (1)
- Techno (1)
- Teichtechnik (1)
- Teilhabe (1)
- Tendon Rupture (1)
- Tendons (1)
- Terry Pratchett (1)
- Textilbranche (1)
- Textilrecycling (1)
- Theater (1)
- Three-dimensional displays (1)
- Tierpark (1)
- Tinyhouse-Module (1)
- Tisch (1)
- Tobacco mosaic virus (TMV) (1)
- Tod (1)
- Tora (1)
- Tourismus (1)
- Tourismuskampagne (1)
- Training (1)
- Trainingsgerät (1)
- Transcendence (1)
- Transformativer Designguide (1)
- Transponder (1)
- Transport (1)
- Trauer (1)
- Traum (1)
- Trauma (1)
- Tyrannosaurus (1)
- Türkei (1)
- Türkisch (1)
- UAV (1)
- UI/UX Design (1)
- UX/UI Gestaltung (1)
- Ui Design (1)
- Ukiyo (1)
- Ultrasound (1)
- Umwelt (1)
- Umweltschutz (1)
- Unreinforced masonry walls (1)
- User Experience (1)
- VDI-Wärmeatlas (1)
- VOP compression (1)
- VR (1)
- VR Event (1)
- Validation (1)
- Vascular response (1)
- Vergangenheit (1)
- Vergessene Welten (1)
- Verhaltensbeiwerte (1)
- Verkaufsraum (1)
- Visual field asymmetry (1)
- Vögel (1)
- Wahrnehmung (1)
- Wald (1)
- Waldromantik (1)
- Waldsterben (1)
- Waschetiketten (1)
- Wasser (1)
- Wasserbau (1)
- Wasserwirtschaft (1)
- Water distribution system (1)
- Webseite (1)
- Werkzeugfrei (1)
- Wilhelma (1)
- Winter (1)
- Wissenschaft (1)
- Wohnkonzept (1)
- Wärmeübertrager (1)
- Wärmeübertragung (1)
- Young Carer (1)
- Zeichnen (1)
- Zeitreise (1)
- Zeitung (1)
- Zeitwandel (1)
- Zeta potential (1)
- Zoo (1)
- Zoologischer Garten (1)
- Zukunftsvision (1)
- Zusatzstoffe (1)
- Zweiter Weltkrieg (1)
- acetoin (1)
- acetoin reductase (1)
- actin cytoskeleton (1)
- actuator-sensor system (1)
- additive manufactureing (1)
- alcoholic beverages (1)
- antivirale Eigenschaften (1)
- applications (1)
- artificial intelligence (1)
- autonomous navigation (1)
- bioburdens (1)
- biodesign (1)
- biofabrication (1)
- biopotential electrodes (1)
- biosensors (1)
- body imaging at UHF MRI (1)
- building energy modelling (1)
- building energy simulation (1)
- business culture (1)
- business models (1)
- business process automation (1)
- capacitive EIS sensor (1)
- capacitive electrolyte–insulator–semiconductor sensors (1)
- capacitive field-effect sensors (1)
- cardiomyocyte biomechanics (1)
- change (1)
- colorization (1)
- combustor (1)
- combustor development (1)
- commercial offthe- shelf solutions (1)
- construction (1)
- control gate (1)
- crop yield (1)
- culpability (1)
- cyber physical production system (1)
- cyber-physical production systems (1)
- detection of charged macromolecules (1)
- digital factory (1)
- digital shadow (1)
- digitalization (1)
- dissemination (1)
- do-it-yourself (1)
- down-conductor (1)
- drop jump (1)
- early warning and response system (1)
- ecological structure (1)
- education (1)
- electrically driven compressors (1)
- embedded hardware (1)
- emote practical training (1)
- energy transition (1)
- engine demonstration (1)
- enzymatic biosensor (1)
- enzyme kinetics (1)
- equivalent circuit (1)
- event-based simulation (1)
- experimentell (1)
- fair (1)
- field-effect sensor (1)
- food production (1)
- fragility curves (1)
- frequency mixing magnetic detection (1)
- fuel cell (1)
- fuels (1)
- fungalmaterials (1)
- gait (1)
- gas turbine (1)
- genetic algorithm (1)
- glass (1)
- global optimization (1)
- gold nanoparticles (1)
- graphene oxide (1)
- harmonic radar tags (1)
- heat demand (1)
- heat transfer coefficient (1)
- humic acid (1)
- hyper-gravity (1)
- hypo-gravity (1)
- im Freien (1)
- industrial agents (1)
- industrial gas turbine (1)
- information systems (1)
- integrated transmit coil arrays (1)
- integration SHM in BIM (1)
- interconnected sensor systems (1)
- internal combustion engine (1)
- internet of production (1)
- intraclass correlation coefficient (1)
- large-scale inspection (1)
- laser based powder fusion (1)
- latent heat (1)
- lattice (1)
- layer-by-layer technique (1)
- liability (1)
- light-addressable electrode (1)
- light-addressable potentiometric sensor (1)
- lignite (1)
- lockdown conditions (1)
- locomotion (1)
- low-rank coal (1)
- magnetic nanoparticles (1)
- masonry structures (1)
- medizinische Geräte (1)
- metagenomics (1)
- metal façade (1)
- microbial diversity (1)
- microfluidics (1)
- microwave measurements (1)
- mobile manipulation (1)
- mobility behaviour (1)
- model-predictive control (1)
- motivation (1)
- multi-agent systems (1)
- multianalyte detection (1)
- multiplex detection (1)
- muscle fascicle behavior (1)
- muscle mechanics (1)
- nachhaltig (1)
- nanomaterials (1)
- nonlinear VNA measurements (1)
- nonlinear radar (1)
- nukleares Erbe (1)
- on-chip integrated addressable EISCAP sensors (1)
- open educational resources (1)
- parabolic flight (1)
- passive thermal control (1)
- penicillin (1)
- penicillinase (1)
- photoelectrochemistry (1)
- plant virus detection (1)
- point-and-click (1)
- polyaniline (1)
- polystyrene sulfonate (1)
- prefabrication (1)
- qNMR (1)
- rehabilitation (1)
- remote teamwork (1)
- renewable energies (1)
- research framework (1)
- roleplay (1)
- running (1)
- sarcomere operating length (1)
- seismic risk (1)
- seismic structural damage detection via SHM (1)
- seismic vulnerability (1)
- sensor networks (1)
- sensors (1)
- series elastic element behavior (1)
- shotgun sequencing (1)
- shoulder (1)
- small and medium scaled companies (1)
- smart building engineering (1)
- smart engineering (1)
- software evaluation (1)
- software selection (1)
- soil amendment (1)
- soil health (1)
- soil remediation (1)
- sprint start (1)
- standard error of measurement (1)
- star tracker (1)
- steel columns (1)
- sterility tests (1)
- sterilization efficacy (1)
- sterilization methods (1)
- stochastic optimization (1)
- storage dispatch (1)
- storage optimisation (1)
- stretch reflex (1)
- subroutine (1)
- surface-orthogonal path planning (1)
- sustainability (1)
- t-modules (1)
- technology (1)
- test-retest reliability (1)
- thermal storage (1)
- thermo-physical (1)
- titanium dioxide photoanode (1)
- tobacco mosaic virus (TMV) (1)
- touch voltage (1)
- transponder (1)
- ultrasonography (1)
- ultrasound imaging (1)
- unloading (1)
- urban farming (1)
- user & usage (1)
- validation methods (1)
- virtual reality (1)
- walking (1)
- wind turbine production (1)
- Ökonomie (1)
Zugriffsart
- weltweit (119)
- campus (67)
- bezahl (34)
- fachbereichsweit (FB4) (1)
The planned coal phase-out in Germany by 2038 will lead to the dismantling of power plants with a total capacity of approx. 30 GW. A possible further use of these assets is the conversion of the power plants to thermal storage power plants; the use of these power plants on the day-ahead market is considerably limited by their technical parameters. In this paper, the influence of the technical boundary conditions on the operating times of these storage facilities is presented. For this purpose, the storage power plants were described as an MILP problem and two price curves, one from 2015 with a relatively low renewable penetration (33 %) and one from 2020 with a high renewable energy penetration (51 %) are compared. The operating times were examined as a function of the technical parameters and the critical influencing factors were investigated. The thermal storage power plant operation duration and the energy shifted with the price curve of 2020
increases by more than 25 % compared to 2015.
Wir stellen hier exemplarisch STACK Aufgaben vor, die frei von der Problematik sind, welche sich durch diverse Kommunikationswege und (webbasierte) Computer Algebra Systeme (CAS) ergibt. Daher sind sie insbesondere für eine Open-Book Online Prüfung geeignet, da eine faire Prüfungssituation gewährleistet werden kann.
Die Studie erörtert anhand eines Fallbeispiels aus der Mathematik für Ingenieur*innen, wie didaktische Gestaltungsprinzipien für Soziale Präsenz, Kollaboration und das Lösen von praxisnahen Problemen mit mathematischem Denken in einer Online-Umgebung aussehen können. Hierfür zieht der
Beitrag den forschungsmethodologischen Rahmen Design-Based Research (DBR) hinzu und berichtet über Zwischenergebnisse. DBR wird an dieser Stelle als eine systematische Herangehensweise an kurzfristige Lehrveränderungen und als Chance auf dem Weg zu einer neuen Hochschullehre nach der COVID-19-Pandemie dargestellt, die theoretische und empirische Erkenntnisse mit Praxisverknüpfung und -relevanz vereint.
In einer Mischklasse, bestehend aus sehenden und nicht-sehenden Kindern, welche nicht schriftlich oder spielerisch miteinander kommunizieren können, gehen einige soziale Aspekte und Lernübungen verloren. Partnerarbeiten und das gegenseitige Kontrollieren der Richtigkeit, beispielsweise bei der Anwendung von Satzzeichen, sind Möglichkeiten, welche die Kinder ohne ein gemeinsames Material nicht wahrnehmen können. Diese Arbeit ermöglicht ein gemeinsames Arbeiten aller Kinder durch dasselbe Material. Hierfür dienen dreidimensionale Objekte, welche im STL-Dateiformat zur Verfügung stehen. Es eignet sich für schriftliche und geografische Arbeiten. Des Weiteren ist ein Memory-Spiel enthalten, welches ebenso von sehenden und nicht-sehenden Kinder gespielt werden kann. Diese STLs können weltweit verschickt werden, sodass diese beliebig mit einem 3D-Drucker gedruckt werden können.
The term ocular rigidity is widely used in clinical ophthalmology. Generally it is assumed as a resistance of the whole eyeball to mechanical deformation and relates to biomechanical properties of the eye and its tissues. Basic principles and formulas for clinical tonometry, tonography and pulsatile ocular blood flow measurements are based on the concept of ocular rigidity. There is evidence for altered ocular rigidity in aging, in several eye diseases and after eye surgery. Unfortunately, there is no consensual view on ocular rigidity: it used to make a quite different sense for different people but still the same name. Foremost there is no clear consent between biomechanical engineers and ophthalmologists on the concept. Moreover ocular rigidity is occasionally characterized using various parameters with their different physical dimensions. In contrast to engineering approach, clinical approach to ocular rigidity claims to characterize the total mechanical response of the eyeball to its deformation without any detailed considerations on eye morphology or material properties of its tissues. Further to the previous chapter this section aims to describe clinical approach to ocular rigidity from the perspective of an engineer in an attempt to straighten out this concept, to show its advantages, disadvantages and various applications.
This study investigates the influence of pressure on the temperature distribution of the micromix (MMX) hydrogen flame and the NOx emissions. A steady computational fluid dynamic (CFD) analysis is performed by simulating a reactive flow with a detailed chemical reaction model. The numerical analysis is validated based on experimental investigations. A quantitative correlation is parametrized based on the numerical results. We find, that the flame initiation point shifts with increasing pressure from anchoring behind a downstream located bluff body towards anchoring upstream at the hydrogen jet. The numerical NOx emissions trend regarding to a variation of pressure is in good agreement with the experimental results. The pressure has an impact on both, the residence time within the maximum temperature region and on the peak temperature itself. In conclusion, the numerical model proved to be adequate for future prototype design exploration studies targeting on improving the operating range.
Quantitative nuclear magnetic resonance (qNMR) is routinely performed by the internal or external standardization. The manuscript describes a simple alternative to these common workflows by using NMR signal of another active nuclei of calibration compound. For example, for any arbitrary compound quantification by NMR can be based on the use of an indirect concentration referencing that relies on a solvent having both 1H and 2H signals. To perform high-quality quantification, the deuteration level of the utilized deuterated solvent has to be estimated.
In this contribution the new method was applied to the determination of deuteration levels in different deuterated solvents (MeOD, ACN, CDCl3, acetone, benzene, DMSO-d6). Isopropanol-d6, which contains a defined number of deuterons and protons, was used for standardization. Validation characteristics (precision, accuracy, robustness) were calculated and the results showed that the method can be used in routine practice. Uncertainty budget was also evaluated. In general, this novel approach, using standardization by 2H integral, benefits from reduced sample preparation steps and uncertainties, and can be applied in different application areas (purity determination, forensics, pharmaceutical analysis, etc.).
Delayed cerebral ischemia (DCI) is a common complication after aneurysmal subarachnoid hemorrhage (aSAH) and can lead to infarction and poor clinical outcome. The underlying mechanisms are still incompletely understood, but animal models indicate that vasoactive metabolites and inflammatory cytokines produced within the subarachnoid space may progressively impair and partially invert neurovascular coupling (NVC) in the brain. Because cerebral and retinal microvasculature are governed by comparable regulatory mechanisms and may be connected by perivascular pathways, retinal vascular changes are increasingly recognized as a potential surrogate for altered NVC in the brain. Here, we used non-invasive retinal vessel analysis (RVA) to assess microvascular function in aSAH patients at different times after the ictus.
Der Archäologische Park Xanten (APX) gilt als Deutschlands einziger archäologischer Freiluftpark. Er zeichnet sich im Verbund mit dem Römermuseum durch seine Lage auf dem historischen Grund einer römischen Metropole und seine kontinuierliche Forschungsaktivität aus und bietet so ein einzigartiges Umfeld von kultureller Relevanz. Ziel dieses Projektes war es, ein neues Erscheinungsbild zu entwickeln, welches klar die Thematik des Parks in den Medien erkennbar macht. Das Corporate Design dient dazu, die Inhalte des Verbundes in einem einheitlichen System medienübergreifend zu präsentieren. Das Design unterstützt den APX in seiner Funktion als Begegnungs- und Bildungsstätte. Aufgrund dessen ist es im Hinblick auf das Ziel relevant, das Interesse an Kulturgeschichte und Forschung zu wecken.
Neuerfindung der Ligaturen
(2021)
Gegenstand des Projekts ist, Ligaturen als erweiterte Mittel der Informationsübertragung einzusetzen.
Ligaturen als zusätzliches Instrument sollen die visuelle Komponente des Textes unterstützen, ihm die gewisse Frische einhauchen und ihn hiermit insgesamt sichtbarer, origineller und moderner machen. Der Einsatzbereich erstreckt sich hierbei in die verschiedensten Bereiche hin über Design und Werbung, als auch im Handel oder in sozialen Bereichen.
Hierbei kann eine große Anzahl an Wörtern neue Formen annehmen und mithin an neuem Leben und Bedeutung gewinnen, was sicherlich die allgemeinen Sprachmittel bereichern wird.
Auf einer historischen Basis und mit Hilfe der Dekonstruktion wurden neue Formen der Ligaturen geschaffen — seltsame, kontroverse, auffällige und einzigartige.
Previous studies optimized the dimensions of coaxial heat exchangers using constant mass fow rates as a boundary condition. They show a thermal optimal circular ring width of nearly zero. Hydraulically optimal is an inner to outer pipe radius ratio of 0.65 for turbulent and 0.68 for laminar fow types. In contrast, in this study, fow conditions in the circular ring are kept constant (a set of fxed Reynolds numbers) during optimization. This approach ensures fxed fow conditions and prevents inappropriately high or low mass fow rates. The optimization is carried out for three objectives: Maximum energy gain, minimum hydraulic efort and eventually optimum net-exergy balance. The optimization changes the inner pipe radius and mass fow rate but not the Reynolds number of the circular ring. The thermal calculations base on Hellström’s borehole resistance and the hydraulic optimization on individually calculated linear loss of head coefcients. Increasing the inner pipe radius results in decreased hydraulic losses in the inner pipe but increased losses in the circular ring. The net-exergy diference is a key performance indicator and combines thermal and hydraulic calculations. It is the difference between thermal exergy fux and hydraulic efort. The Reynolds number in the circular ring is instead of the mass fow rate constant during all optimizations. The result from a thermal perspective is an optimal width of the circular ring of nearly zero. The hydraulically optimal inner pipe radius is 54% of the outer pipe radius for laminar fow and 60% for turbulent fow scenarios. Net-exergetic optimization shows a predominant infuence of hydraulic losses, especially for small temperature gains. The exact result depends on the earth’s thermal properties and the fow type. Conclusively, coaxial geothermal probes’ design should focus on the hydraulic optimum and take the thermal optimum as a secondary criterion due to the dominating hydraulics.
Diese Bachelorarbeit widmet sich dem nachhaltigen Packaging-Design von Kosmetikprodukten. Dies wird am Beispiel eines Naturkosmetik-Unternehmens dargestellt. Die Gestaltung einer Shampoo-Flasche wird in dem vorliegenden Projekt exemplarisch für die thematische und gestalterische Untersuchung genutzt. Zudem wurden mit Tube und Tiegel noch zwei weitere Verpackungsformen erstellt.
Das Ziel dieser Arbeit ist es, eine nachhaltige Verpackung zu gestalten. Diese soll den hohen CO2-Ausstoß bei der Herstellung von Verpackungen verringern und dabei dem Anspruch des Marketings gerecht werden.
Hierbei wurde ein Logo-Design, ein Farbkonzept, eine einheitliche Formsprache und eine Typografie erarbeitet.
Die Fast-Fashion-Industrie produziert am laufenden Band neue Kleidung und so schnell wie sie gekauft wird, wird sie auch wieder entsorgt. Das Altkleidersystem ist allerdings an seiner Kapazitätsgrenze angekommen und die sich zuspitzende Lage verlangt nach einer neuen innovativen Lösung. „VABRIC“ ersetzt die herkömmlichen Altkleidercontainer in den Städten und verlängert den Lebenszyklus von Textilien. Durch eine gezielte Vorsortierung entsteht die Möglichkeit Kleidung weiterzuverteilen und in bestehende oder ganz neue Nutzungskreisläufe zu integrieren. Für die Nutzenden wird die Textilspende durch das hochwertige Erscheinungsbild, die zentralen Standorte und die Aufklärung zu einer positiven Erfahrung. „VABRIC“ verkörpert, am Beispiel von Textilien, die Vision, wie wir in Zukunft mit vermeintlichem Abfall umgehen und den wahren Wert von Ressourcen hervorheben und nutzbar machen.
Performing tasks, such as running and jumping, requires activation of the agonist and antagonist muscles before (motor unit pre-activation) and during movement performance (Santello and Mcdonagh, 1998). A well-timed and regulated muscle activation elicits a stretch-shortening cycle (SSC) response, naturally occurring in bouncing movements (Ishikawa and Komi, 2004; Taube et al., 2012). By definition, the SSC describes the stretching of a pre-activated muscle-tendon complex immediately followed by a muscle shortening in the concentric push-off phase (Komi, 1984).
Given the importance of SSC actions for human movement, it is not surprising that many studies investigated the biomechanics of this phenomenon; in particular, drop jumps (DJs) represent a good paradigm to study muscle fascicle and tendon behavior in ballistic movements involving the SSC.
Within a DJ, three main phases [pre-activation, braking, and push-off (PO; Komi, 2000)] have been recognized and extensively studied in common and challenging conditions, such as changes in load, falling height, or simulated hypo-gravity (Avela et al., 1994; Arampatzis et al., 2001; Fukashiro et al., 2005; Ishikawa et al., 2005; Sousa et al., 2007; Ritzmann et al., 2016; Helm et al., 2020).
These studies show that the timing and amount of triceps-surae muscle-tendon unit pre-activation in DJs are differentially regulated based on the load applied to the muscle, being optimal in normal “Earth” gravity conditions (Avela et al., 1994), but decreased in simulated hypo-gravity, hyper-gravity (Avela et al., 1994; Ritzmann et al., 2016), or unknown conditions (i.e., unknown falling heights; Helm et al., 2020). Some authors indicated that, when falling from heights different from the optimal one [defined as the drop height giving a maximum DJ performance indicated as peak ground reaction force (GRF) or jump high], electromyographic (EMG) activity of the plantar flexors increases from lower than optimal to higher than optimal heights (Ishikawa and Komi, 2004; Sousa et al., 2007).
These findings highlight the ability of the central nervous system to regulate the timing and amount of pre-activation according to different jumping conditions, thus regulating muscle fascicle length, tendon and joint stiffness as well as position, in order to safely land on the ground and quickly re-bounce.
Similarly, to pre-activation, also in the braking phase, the plantar flexors are differentially regulated. In optimal height (i.e., load) jumping conditions, gastrocnemius medialis (GM) fascicles shorten at early ground contact (possibly due to the intervention of the stretch reflex; Gollhofer et al., 1992) and behave quasi-isometrically in the late braking phase, enabling tendon elongation, and storage of elastic energy (Gollhofer et al., 1992; Fukashiro et al., 2005; Sousa et al., 2007). When increasing the falling height (augmenting the impact GRF), the quasi-isometric behavior of fascicles disappears, and fast fascicle lengthening occurs (Ishikawa et al., 2005; Sousa et al., 2007).
In the third and last PO phase, fascicles shorten and the tendon releases the elastic energy previously stored. Bobbert et al. (1987) reported no influence of jumping height on the work done and on the net vertical impulse assessed during PO; this observation suggests that, despite an optimal DJ performance might be achieved only in specific conditions (falling heights, loads), the central nervous system seems to be able to regulate muscle behavior in order to effectively perform the required task also in challenging situations.
Although the regulation of triceps-surae muscle-tendon unit in DJs has been extensively investigated, very few studies focused on sarcomeres behavior during the performance of this SSC movement (Kurokawa et al., 2003; Fukashiro et al., 2005, 2006). Sarcomeres represent muscle contractile units and are known to express different amounts of force depending on their length (Gordon et al., 1966; Walker and Schrodt, 1974); thus, understanding the time course of their responses during DJs is fundamental to gain further insights into muscle force-generating capacity. In vivo measurement of sarcomere length in humans has been so far been performed only in static positions and under highly controlled experimental conditions (Llewellyn et al., 2008; Sanchez et al., 2015). Instead, human sarcomere length estimation (achieved by dividing GM measured fascicle length for a fixed sarcomere number) in dynamic contractions provided an indirect measure of sarcomere operating range during squat jump, countermovement jump, and DJ (Fukashiro et al., 2005, 2006; Kurokawa et al., 2003). The results of these studies showed that sarcomeres operate in the ascending limb of their length-tension (L-T) relationship in all types of jumps, and particularly so in DJ.
However, most of the available observations on sarcomere and muscle fascicle behavior were made in condition of constant gravity. Thus, in order to understand how sarcomere and muscle fascicle length are regulated in variable gravity conditions, we performed experiments in a parabolic flight, involving variable gravity levels, ranging from about zero-g to about double the Earth’s gravity (1 g; Waldvogel et al., 2021).
Specifically, the aims of the present study were as follows:
1. To investigate the ability of the neuromuscular system in regulating fascicle length in response to conditions of variable gravity.
2. To estimate sarcomere operative length in the different DJ phases, in order to calculate its theoretical force production and its possible modulation in conditions of variable gravity.
We hypothesized that muscle fascicles would be differentially regulated in different gravity conditions compared to 1 g, particularly in anticipation of landing and re-bouncing in unknown gravity levels. In addition, we hypothesized that sarcomeres would operate in the upper part of the ascending limb of their L-T relationship, possibly lengthening during the braking phase (especially in hyper-gravity) while operating quasi-isometrically in 1 g.
Magnetic immunoassays employing Frequency Mixing Magnetic Detection (FMMD) have recently become increasingly popular for quantitative detection of various analytes. Simultaneous analysis of a sample for two or more targets is desirable in order to reduce the sample amount, save consumables, and save time. We show that different types of magnetic beads can be distinguished according to their frequency mixing response to a two-frequency magnetic excitation at different static magnetic offset fields. We recorded the offset field dependent FMMD response of two different particle types at frequencies ƒ₁ + n⋅ƒ₂, n = 1, 2, 3, 4 with ƒ₁ = 30.8 kHz and ƒ₂ = 63 Hz. Their signals were clearly distinguishable by the locations of the extremes and zeros of their responses. Binary mixtures of the two particle types were prepared with different mixing ratios. The mixture samples were analyzed by determining the best linear combination of the two pure constituents that best resembled the measured signals of the mixtures. Using a quadratic programming algorithm, the mixing ratios could be determined with an accuracy of greater than 14%. If each particle type is functionalized with a different antibody, multiplex detection of two different analytes becomes feasible.
Multi-attribute relation extraction (MARE): simplifying the application of relation extraction
(2021)
Natural language understanding’s relation extraction makes innovative and encouraging novel business concepts possible and facilitates new digitilized decision-making processes. Current approaches allow the extraction of relations with a fixed number of entities as attributes. Extracting relations with an arbitrary amount of attributes requires complex systems and costly relation-trigger annotations to assist these systems. We introduce multi-attribute relation extraction (MARE) as an assumption-less problem formulation with two approaches, facilitating an explicit mapping from business use cases to the data annotations. Avoiding elaborated annotation constraints simplifies the application of relation extraction approaches. The evaluation compares our models to current state-of-the-art event extraction and binary relation extraction methods. Our approaches show improvement compared to these on the extraction of general multi-attribute relations.
Mit MULO wurde eine Serie multifunktionaler Objekte für den Wohnbereich entworfen. In Zeiten des Überangebots und des ständigen Wohnraumwechsels soll der Nutzer dieser Objekte mit einem modernen und schlichten Design unterstützt werden, das zu jedem Anlass passt. Die minimalistische Ästhetik mit hohem Komfort orientiert sich dabei an den Bedürfnissen des Endverbrauchers.
Als Verwandlungskünstler bereichert MULO jeden Wohnraum. Die gesamte Serie ist unter der Berücksichtigung der schnelllebigen und sich wandelnden Welt entworfen worden. Mit multifunktionalen Objekten ist das Produkt den flexiblen Anforderungen und Bedürfnissen des Menschen gewachsen. Die Bereiche Wohnen, Leben, Arbeiten, Schlafen und Entspannen werden durch das Sofa- , das Tisch- und das Keramik-System optimal abgedeckt. Durch die Verwendung von nachhaltigen und recycelbaren Materialien, setzt MULO ein kleines Statement und hinterlässt nachhaltig Eindruck.
The presented paper gives an overview of the most important and most common theories and concepts from the economic field of organisational change and is also enriched with quantitative publication data, which underlines the relevance of the topic. In particular, the topic presented is interwoven in an interdisciplinary way with economic psychological models, which are underpinned within the models with content from leading scholars in the field. The pace of change in companies is accelerating, as is technological change in our society. Adaptations of the corporate structure, but also of management techniques and tasks, are therefore indispensable. This includes not only the right approaches to employee motivation, but also the correct use of intrinsic and extrinsic motivational factors. Based on the hypothesis put forward by the scientist and researcher Rollinson in his book “Organisational behaviour and analysis” that managers believe motivational resources are available at all times, socio-economic and economic psychological theories are contrasted here in order to critically examine this statement. In addition, a fictitious company was created as a model for this work in order to illustrate the effects of motivational deficits in practice. In this context, the theories presented are applied to concrete problems within the model and conclusions are drawn about their influence and applicability. This led to the conclusion that motivation is a very individual challenge for each employee, which requires adapted and personalised approaches. On the other hand, the recommendations for action for supervisors in the case of motivation deficits also cannot be answered in a blanket manner, but can only be solved with the help of professional, expert-supported processing due to the economic-psychological realities of motivation. Identifying, analysing and remedying individual employee motivation deficits is, according to the authors, a problem and a challenge of great importance, especially in the context of rapidly changing ecosystems in modern companies, as motivation also influences other factors such as individual productivity. The authors therefore conclude that good motivation through the individual and customised promotion and further training of employees is an important point for achieving important corporate goals in order to remain competitive on the one hand and to create a productive and pleasant working environment on the other.
For now, the Planetary Defense Conference Exercise 2021's incoming fictitious(!), asteroid, 2021 PDC, seems headed for impact on October 20th, 2021, exactly 6 months after its discovery. Today (April 26th, 2021), the impact probability is 5%, in a steep rise from 1 in 2500 upon discovery six days ago. We all know how these things end. Or do we? Unless somebody kicked off another headline-grabbing media scare or wants to keep civil defense very idle very soon, chances are that it will hit (note: this is an exercise!). Taking stock, it is barely 6 months to impact, a steadily rising likelihood that it will actually happen, and a huge uncertainty of possible impact energies: First estimates range from 1.2 MtTNT to 13 GtTNT, and this is not even the worst-worst case: a 700 m diameter massive NiFe asteroid (covered by a thin veneer of Ryugu-black rubble to match size and brightness), would come in at 70 GtTNT. In down to Earth terms, this could be all between smashing fireworks over some remote area of the globe and a 7.5 km crater downtown somewhere. Considering the deliberate and sedate ways of development of interplanetary missions it seems we can only stand and stare until we know well enough where to tell people to pack up all that can be moved at all and save themselves. But then, it could just as well be a smaller bright rock. The best estimate is 120 m diameter from optical observation alone, by 13% standard albedo. NASA's upcoming DART mission to binary asteroid (65803) Didymos is designed to hit such a small target, its moonlet Dimorphos. The Deep Impact mission's impactor in 2005 successfully guided itself to the brightest spot on comet 9P/Tempel 1, a relatively small feature on the 6 km nucleus. And 'space' has changed: By the end of this decade, one satellite communication network plans to have launched over 11000 satellites at a pace of 60 per launch every other week. This level of series production is comparable in numbers to the most prolific commercial airliners. Launch vehicle production has not simply increased correspondingly – they can be reused, although in a trade for performance. Optical and radio astronomy as well as planetary radar have made great strides in the past decade, and so has the design and production capability for everyday 'high-tech' products. 60 years ago, spaceflight was invented from scratch within two years, and there are recent examples of fast-paced space projects as well as a drive towards 'responsive space'. It seems it is not quite yet time to abandon all hope. We present what could be done and what is too close to call once thinking is shoved out of the box by a clear and present danger, to show where a little more preparedness or routine would come in handy – or become decisive. And if we fail, let's stand and stare safely and well instrumented anywhere on Earth together in the greatest adventure of science.
Monitoring-System für die Luftrettung: ergonomisches Designkonzept für den medizinischen Anwender
(2021)
Bei einem Luftrettungseinsatz hat die Herstellung der Transportfähigkeit des Patienten Priorität. Im Anschluss erfolgt das Monitoring während des Fluges.
Das Problem dabei ist: Es gibt keine einheitliche Basis zur ergonomischen Nutzung und Datenverwertung der medizinischen Geräte. Kabel, Positionierung und individuelle Displays beeinträchtigen die Anwendenden. Dies kann im schlimmsten Fall die erfolgreiche Patientenbehandlung gefährden und die Übergabe des Patienten verzögern.
Im Konzept wurden die Geräte drahtlos gestaltet. Mittels Knopfdruck am Gerät werden Daten an den Monitor übertragen. Schnell und sicher können EKG, Blutdruck, SPO2 und Temperatur gemessen und Stethoskop, Ultraschall und Videolaryngoskop verwendet werden. Ein Barcode-Scanner dokumentiert Medikamente und verbrauchte Materialien. Im Anschluss wird ein Zielkrankenhaus ausgewählt, die Ankunftszeit angezeigt und Daten protokolliert und übertragen.
Infused Thermal Solutions (ITS) introduces a method for passive thermal control to stabilize structural components thermally without active heating and cooling systems, but with phase change material (PCM) for thermal energy storage (TES), in combination with lattice - both embedded in additive manufactured functional structures. In this ITS follow-on paper a thermal model approach and associated predictions are presented, related on the ITS functional breadboards developed at FH Aachen. Predictive TES by PCM is provided by a specially developed ITS PCM subroutine, which is applicable in ESATAN. The subroutine is based on the latent heat storage (LHS) method to numerically embed thermo-physical PCM behavior. Furthermore, a modeling approach is introduced to numerically consider the virtual PCM/lattice nodes within the macro-encapsulated PCM voids of the double wall ITS design. Related on these virtual nodes, in-plane and out-of-plane conductive links are defined. The recent additive manufactured ITS breadboard series are thermally cycled in the thermal vacuum chamber, both with and without embedded PCM. Related on breadboard hardware tests, measurement results are compared with predictions and are subsequently correlated. The results of specific simulations and measurements are presented. Recent predictive results of star tracker analyses are also presented in ICES-2021-106, based on this ITS PCM subroutine.
Phase change materials offer a way of storing excess heat and releasing it when it is needed. They can be utilized as a method to control thermal behavior without the need for additional energy. This work focuses on exploring the potential of using phase change materials to passively control the thermal behavior of a star tracker by infusing it with a fitting phase change material. Based on the numerical model of the star trackers thermal behavior using ESATAN-TMS without implemented phase change material, a fitting phase change material for selected orbits is chosen and implemented in the thermal model. The altered thermal behavior of the numerical model after the implementation is analyzed for different amounts of the chosen phase change materials using an ESATAN-based subroutine developed by the FH Aachen. The PCM-modelling-subroutine is explained in the paper ICES-2021-110. The results show that an increasing amount of phase change material increasingly damps temperature oscillations. Using an integral part structure some of the mass increase can be compensated.
Da die Gesellschaft in Deutschland immer älter wird, steigt auch die Nachfrage nach Gehhilfen wie beispielsweise einem Rollator. Im Alter steigt das Erkrankungsrisiko für Krankheiten, die die Mobilität erschweren können. An diesem Punkt setzt der Rollator MORO an und bietet wieder Sicherheit beim Gehen.
Für den MORO sind Hindernisse wie Bordsteinkanten kein Problem, da er sie mit speziellen Rädern spielend überwinden kann. Zusätzlich bietet er ergonomische Handgriffe, die entsprechend der jeweiligen Krankheit angepasst und ausgetauscht werden können sowie einen Sitz und eine Rückenlehne. Da der MORO aus Carbon hergestellt wird, ist er leicht in der Handhabung und somit wird die Mitnahme im Auto oder Bus und Bahn erleichtert. Durch seine verbesserte Ergonomie, individueller Anpassung und Leichtigkeit kann man wieder selbstständig durch die Welt gehen.
Das Ziel des Bibliothekskonzeptes ist es, Hybridbibliotheken als Symbiose aus zukunftsweisender Medientechnologie und klassischer Funktionalität in Modulbauweise in Bestandsarchitektur zu integrieren. Der Lösungsansatz liegt in einer kostengünstigen dynamischen Modularität, welche als Plug-In, Add-On, Single oder Mobilkonzept nutzbar ist. Das modulare System setzt hierbei auf Grundmodule, welche für unterschiedlichste räumliche Gegebenheiten skaliert werden können. Somit können Einrichtungen neue Funktionalitäten integrieren oder auf temporäre Anforderungen strategisch reagieren. Durch die einfache Montage und Transportfähigkeit lassen sich sehr schnell zeitbegrenzte oder dauerhafte Raumkonzepte umsetzen. Das System nimmt die Dynamik des sich verändernden Bedarfs auf und passt sich flexibel den Zielgruppen an, was im Gegensatz dazu bei statischen Systemen nicht der Fall ist.
Urban farming is an innovative and sustainable way of food production and is becoming more and more important in smart city and quarter concepts. It also enables the production of certain foods in places where they usually dare not produced, such as production of fish or shrimps in large cities far away from the coast. Unfortunately, it is not always possible to show students such concepts and systems in real life as part of courses: visits of such industry plants are sometimes not possible because of distance or are permitted by the operator for hygienic reasons. In order to give the students the opportunity of getting into contact with such an urban farming system and its complex operation, an industrial urban farming plant was set up on a significantly smaller scale. Therefore, all needed technical components like water aeriation, biological and mechanical filtration or water circulation have been replaced either by aquarium components or by self-designed parts also using a 3D-printer. Students from different courses like mechanical engineering, smart building engineering, biology, electrical engineering, automation technology and civil engineering were involved in this project. This “miniature industrial plant” was also able to start operation and has now been running for two years successfully. Due to Corona pandemic, home office and remote online lectures, the automation of this miniature plant should be brought to a higher level in future for providing a good control over the system and water quality remotely. The aim of giving the student a chance to get to know the operation of an urban farming plant was very well achieved and the students had lots of fun in “playing” and learning with it in a realistic way.
Kinder im Kontext von medizinischen Einrichtungen.
Kinder sind keine kleinen Erwachsenen und erfordern einen auf sie angepassten Zugang zu medizinischen Behandlungsabläufen. Das Konzept basiert auf dem Gestaltungsprinzip des „Child Centered Design“ mit Befragungen von Experten der Pädiatrie und Forschung sowie mit enger Zusammenarbeit mit Kindern.
Entstanden ist ein Produkt welches Skepsis und Angst junger Patienten im Alter von 6 bis 14 Jahren bei stationären Aufenthalten in Krankenhäusern mindert und ihren Heilungsprozess positiv unterstützt. Unter Einbezug von digitalen Möglichkeiten wie Augmented Reality erklärt „ViU“, ein Krankenhaus-Companion in Eulen-Optik, den kleinen Patienten Funktionen und das Wirken verschiedenster medizinischer Geräte und Behandlungen. So wird nicht nur der Rate an Traumata durch Krankenhausaufenthalte bei Kindern entgegengewirkt, sondern auch das Krankenhauspersonal im Umgang mit Kindern im Klinikalltag entlastet.
The compliant nature of distal limb muscle-tendon units is traditionally considered suboptimal in explosive movements when positive joint work is required. However, during accelerative running, ankle joint net mechanical work is positive. Therefore, this study aims to investigate how plantar flexor muscle-tendon behavior is modulated during fast accelerations. Eleven female sprinters performed maximum sprint accelerations from starting blocks, while gastrocnemius muscle fascicle lengths were estimated using ultrasonography. We combined motion analysis and ground reaction force measurements to assess lower limb joint kinematics and kinetics, and to estimate gastrocnemius muscle-tendon unit length during the first two acceleration steps. Outcome variables were resampled to the stance phase and averaged across three to five trials. Relevant scalars were extracted and analyzed using one-sample and two-sample t-tests, and vector trajectories were compared using statistical parametric mapping. We found that an uncoupling of muscle fascicle behavior from muscle-tendon unit behavior is effectively used to produce net positive mechanical work at the joint during maximum sprint acceleration. Muscle fascicles shortened throughout the first and second steps, while shortening occurred earlier during the first step, where negative joint work was lower compared with the second step. Elastic strain energy may be stored during dorsiflexion after touchdown since fascicles did not lengthen at the same time to dissipate energy. Thus, net positive work generation is accommodated by the reuse of elastic strain energy along with positive gastrocnemius fascicle work. Our results show a mechanism of how muscles with high in-series compliance can contribute to net positive joint work.
Was ist „Männlichkeit“ und was verstehen junge Erwachsene unter diesem Begriff? Das Ziel des Projektes war 18 bis 30 jährige Jungen und Männer des biologisch männlichen Geschlechts zu befragen, was ihre Definition von Männlichkeit sei. Diese Arbeit hatte die Intention den Befragten einen sicheren Raum zu geben, damit sie ihre ehrlichen Antworten äußern und ihre wahren Gesichter zeigen können. Die dabei entstandenen Fotografien sollen die Persönlichkeiten und die seelische Verfassung der abgebildeten Personen widerspiegeln. Es handelt sich um eine soziologische Bestandsaufnahme der „Männlichkeiten“ der heutigen Jugend und der heranwachsenden Erwachsenen im 21. Jahrhundert.
Bei dem Projekt handelt es sich um eine interaktive Station für Jugendliche mit dem Ziel, Manipulation im Alltag zu entlarven und mithilfe von konkreten Beispielen spielerisch zu lernen.
Im Dialog stehen sich Individuen in ständiger Beeinflussung gegenüber. Das Wissen darum kann
bewusst (aus)genutzt werden und den Gesprächspartner zu „unbewusstem“ Handeln verleiten. Eine entsprechende Nutzung zum eigenen Vorteil bezeichnet man als Manipulation. Es soll bei Jugendlichen ein Bewusstsein geschaffen werden, um gezielt Manipulation zu erkennen.
Erstellt wird hierfür eine Installation im Raum mit einer abstrahierten, metaphorischen Darstellung von Manipulation. Die Jugendlichen erfahren sich im interaktiven Part einerseits in der Situation eines Manipulationsopfers und andererseits als Manipulant. Die begehbare Station vermittelt über die Räumlichkeit das Gefühl der Bedrängnis und erzeugt auf plakative Weise eine körperliche Erfahrung einer Bredouille, die im psychischen Zusammenhang zu Manipulation steht.
Magnetic nanoparticle relaxation in biomedical application: focus on simulating nanoparticle heating
(2021)
In this paper we investigate the use of deep neural networks for 3D object detection in uncommon, unstructured environments such as in an open-pit mine. While neural nets are frequently used for object detection in regular autonomous driving applications, more unusual driving scenarios aside street traffic pose additional challenges. For one, the collection of appropriate data sets to train the networks is an issue. For another, testing the performance of trained networks often requires tailored integration with the particular domain as well. While there exist different solutions for these problems in regular autonomous driving, there are only very few approaches that work for special domains just as well. We address both the challenges above in this work. First, we discuss two possible ways of acquiring data for training and evaluation. That is, we evaluate a semi-automated annotation of recorded LIDAR data and we examine synthetic data generation. Using these datasets we train and test different deep neural network for the task of object detection. Second, we propose a possible integration of a ROS2 detector module for an autonomous driving platform. Finally, we present the performance of three state-of-the-art deep neural networks in the domain of 3D object detection on a synthetic dataset and a smaller one containing a characteristic object from an open-pit mine.
Humic substances (HS), as important environmental components, are essential to soil health and agricultural sustainability. The usage of low-rank coal (LRC) for energy generation has declined considerably due to the growing popularity of renewable energy sources and gas. However, their potential as soil amendment aimed to maintain soil quality and productivity deserves more recognition. LRC, a highly heterogeneous material in nature, contains large quantities of HS and may effectively help to restore the physicochemical, biological, and ecological functionality of soil. Multiple emerging studies support the view that LRC and its derivatives can positively impact the soil microclimate, nutrient status, and organic matter turnover. Moreover, the phytotoxic effects of some pollutants can be reduced by subsequent LRC application. Broad geographical availability, relatively low cost, and good technical applicability of LRC offer the advantage of easy fulfilling soil amendment and conditioner requirements worldwide. This review analyzes and emphasizes the potential of LRC and its numerous forms/combinations for soil amelioration and crop production. A great benefit would be a systematic investment strategy implicating safe utilization and long-term application of LRC for sustainable agricultural production.
Isolierung, finanzielle Not und Zukunftsängste: Die sozialen Folgen des Corona-Lockdowns sind gravierend. Oftmals wird der Fokus in der Pandemie auf die wirtschaftlichen Folgen und die Auslastung des Gesundheitssystems gelegt, doch die Auswirkungen des Shutdowns sind weitaus vielschichtiger. Die Philippinen hatten einen der längsten und härtesten Lockdowns der Welt. Im internationalen Vergleich fällt auf, dass der Ton, den der Präsident anschlägt, besonders rau ist und die Einschränkungen des gesellschaftlichen Lebens strikt und gnadenlos sind. Der Dokumentarfilm „LOCKDOWN - a documentary about the corona crisis in the Philippines“ gibt einen Einblick in das Leben der Betroffenen. Aus Sicht der Befragten wird eine multiperspektivische Geschichte erzählt, die von dem Lockdown und seinen Folgen auf der philippinischen Insel Boracay handelt.
Konzeption eines Flagship-Stores mit Wohlfühl- und Erlebnis-Spaces
Die Bedürfnisse von Besuchern und Kunden eines Geschäfts haben sich über die letzten Jahre stark verändert. Sie möchten das ihr Kauf zum Erlebnis wird. Auf Basis dieser Erkenntnis wurde im Rahmen dieser Arbeit zusammen mit den Produkten des Weltmarktführers für Teichtechnik und Aquaristik „OASE – Living Water“ ein Storekonzept geschaffen. Dieses verbindet den Verkaufsraum mit unterschiedlichen Erlebniswelten, welche auf die jeweilig ausgestellte Produktkategorie abgestimmt sind. Zusätzlich eröffnet ein diverser und aufregend gestalteter Gartenbereich der zum Entspannen und Verweilen einlädt. Der herausstechende Aspekt des Konzepts ist, dass die Produkte sowohl als reines Produkt, als auch in verbauter Version in Aktion zu sehen sind. Auf diese Art bietet die Marke „OASE – Living Water“ ein neues Kauf-Erlebnis an.
Living product: ein Ansatz, lebendige Organismen mit einem Produkt zu vereinen und nutzbar zu machen
(2021)
Diese Arbeit setzt sich mit der Frage auseinander, in welcher Form sich lebendige Organismen – hier insbesondere Pilze - in die Produktwelt integrieren lassen. In welcher Art und Weise beeinflusst ein Organismus das Produkterlebnis?
Im Rahmen dieser Arbeit sind vier verschiedene Produkte entstanden, die die Stärken des Materials Myzelium demonstrieren. Myzelium bezeichnet das sehr dichte Wurzelnetzwerk eines Pilzes. Dieses lebendige Netzwerk kann dazu genutzt werden, um organische Stoffe miteinander zu verwachsen und somit Formen entstehen zu lassen. Die so entstandenen Produkte sind in eine Konzeptumgebung eingebettet, in der der Verbrauchende die Natur durch naturnähere Produkte (Form, Material und gewachsene Strukturen) neu erlebt.
Gezeigt wird ein Packaging für Einmachgläser, ein Kressebeet, ein Wandregal und ein Teelicht.
Living Books ist ein in Aachen stationiertes Event der Buchhandlungskette Mayersche, welches Kinder und Jugendliche zum Lesen animieren soll, indem Technik und Unterhaltungsmedien mit dem Buch verbunden werden. Hierzu werden die Möglichkeiten der virtuellen Realität genutzt sowie einzigartige Marketingstrategien, die sich ebenfalls neuartiger Technik bedienen, um das Interesse und die Neugierde junger Menschen zu wecken. Vor Ort wird man zum ersten Mal mit dem Buch konfrontiert. Bis dahin wirkt das Event schlichtweg wie ein Fantreffen zu Buchverfilmungen. Nacheinander betreten die jungen Besucher mithilfe einer VR-Brille eine Welt, die einem Buch entstammt, um ihnen die Geschichte spielerisch näherzubringen. Mithilfe der neuen Welt und einem plötzlichen Ende soll Neugierde für das Buch geweckt werden. Das Interesse für die Geschichte soll am Ende größer sein als die Abneigung gegen das Lesen.
Lignite biosolubilization and bioconversion by Bacillus sp.: the collation of analytical data
(2021)
The vast metabolic potential of microbes in brown coal (lignite) processing and utilization can greatly contribute to innovative approaches to sustainable production of high-value products from coal. In this study, the multi-faceted and complex coal biosolubilization process by Bacillus sp. RKB 7 isolate from the Kazakhstan coal-mining soil is reported, and the derived products are characterized. Lignite solubilization tests performed for surface and suspension cultures testify to the formation of numerous soluble lignite-derived substances. Almost 24% of crude lignite (5% w/v) was solubilized within 14 days under slightly alkaline conditions (pH 8.2). FTIR analysis revealed various functional groups in the obtained biosolubilization products. Analyses of the lignite-derived humic products by UV-Vis and fluorescence spectrometry as well as elemental analysis yielded compatible results indicating the emerging products had a lower molecular weight and degree of aromaticity. Furthermore, XRD and SEM analyses were used to evaluate the biosolubilization processes from mineralogical and microscopic points of view. The findings not only contribute to a deeper understanding of microbe–mineral interactions in coal environments, but also contribute to knowledge of coal biosolubilization and bioconversion with regard to sustainable production of humic substances. The detailed and comprehensive analyses demonstrate the huge biotechnological potential of Bacillus sp. for agricultural productivity and environmental health.
As a low-input crop, Miscanthus offers numerous advantages that, in addition to agricultural applications, permits its exploitation for energy, fuel, and material production. Depending on the Miscanthus genotype, season, and harvest time as well as plant component (leaf versus stem), correlations between structure and properties of the corresponding isolated lignins differ. Here, a comparative study is presented between lignins isolated from M. x giganteus, M. sinensis, M. robustus and M. nagara using a catalyst-free organosolv pulping process. The lignins from different plant constituents are also compared regarding their similarities and differences regarding monolignol ratio and important linkages. Results showed that the plant genotype has the weakest influence on monolignol content and interunit linkages. In contrast, structural differences are more significant among lignins of different harvest time and/or season. Analyses were performed using fast and simple methods such as nuclear magnetic resonance (NMR) spectroscopy. Data was assigned to four different linkages (A: β-O-4 linkage, B: phenylcoumaran, C: resinol, D: β-unsaturated ester). In conclusion, A content is particularly high in leaf-derived lignins at just under 70% and significantly lower in stem and mixture lignins at around 60% and almost 65%. The second most common linkage pattern is D in all isolated lignins, the proportion of which is also strongly dependent on the crop portion. Both stem and mixture lignins, have a relatively high share of approximately 20% or more (maximum is M. sinensis Sin2 with over 30%). In the leaf-derived lignins, the proportions are significantly lower on average. Stem samples should be chosen if the highest possible lignin content is desired, specifically from the M. x giganteus genotype, which revealed lignin contents up to 27%. Due to the better frost resistance and higher stem stability, M. nagara offers some advantages compared to M. x giganteus. Miscanthus crops are shown to be very attractive lignocellulose feedstock (LCF) for second generation biorefineries and lignin generation in Europe.
The feasibility of light-addressed detection and manipulation of pH gradients inside an electrochemical microfluidic cell was studied. Local pH changes, induced by a light-addressable electrode (LAE), were detected using a light-addressable potentiometric sensor (LAPS) with different measurement modes representing an actuator-sensor system. Biosensor functionality was examined depending on locally induced pH gradients with the help of the model enzyme penicillinase, which had been immobilized in the microfluidic channel. The surface morphology of the LAE and enzyme-functionalized LAPS was studied by scanning electron microscopy. Furthermore, the penicillin sensitivity of the LAPS inside the microfluidic channel was determined with regard to the analyte’s pH influence on the enzymatic reaction rate. In a final experiment, the LAE-controlled pH inhibition of the enzyme activity was monitored by the LAPS.
Intelligent autonomous software robots replacing human activities and performing administrative processes are reality in today’s corporate world. This includes, for example, decisions about invoice payments, identification of customers for a marketing campaign, and answering customer complaints. What happens if such a software robot causes a damage? Due to the complete absence of human activities, the question is not trivial. It could even happen that no one is liable for a damage towards a third party, which could create an uncalculatable legal risk for business partners. Furthermore, the implementation and operation of those software robots involves various stakeholders, which result in the unsolvable endeavor of identifying the originator of a damage. Overall it is advisable to all involved parties to carefully consider the legal situation. This chapter discusses the liability of software robots from an interdisciplinary perspective. Based on different technical scenarios the legal aspects of liability are discussed.
Let´s change fashion!: Eine Image-Kampagne der Fair Wear Foundation
für faire und nachhaltige Mode.
(2021)
Fast Fashion-Ketten beherrschen die Modewelt. Doch einige Unternehmen, Siegel und Stiftungen versuchen die Textilindustrie neu umzugestalten. Um die Modeindustrie nachhaltig zu verändern, müssen allerdings auch den Kunden die schlechten Arbeitsbedingungen und die negativen Einflüsse der Textilbranche auf die Umwelt bewusst werden.
Das konkrete Ziel der erstellten Kampagne ist es, modebewusste Menschen davon zu überzeugen Fast Fashion hinter sich zu lassen. Es soll also ein Umdenken bei den Konsumenten stattfinden. Die Fair Wear Foundation und ihre Mitglieder vertreten die Vision, dass Mode auch fair und nachhaltig sein kann. Genau diese Vision soll mit der Kampagne vermittelt und an die Konsumenten weitergetragen werden.
Mit dem Projekt wird sich dem Problem der weltweiten Lebensmittelverschwendung angenommen und versucht Abfälle in Privathaushalten primär industrialisierter Staaten zu reduzieren. Mit jährlich 1,3 Milliarden Tonnen landet circa ein Drittel aller weltweit produzierten Lebensmittel im Müll. Einen Großteil dieser Abfälle ist vermeidbar, besonders dort, wo man im Überfluss lebt.
Das konzipierte Möbelstück soll die Lagerungsmöglichkeiten des Nutzers optimieren und somit für die Wertschätzung von Lebensmitteln sensibilisieren. Für das Möbelstück werden ausschließlich natürliche Materialien verwendet, welche in ihrer Charakteristik optimal zum Funktionsumfang passen, der für die Lagerung benötigt wird. Das Material Terracotta ermöglicht es, mittels Verdunstungskühlung stromlos Gemüse kalt zu halten. Antibakterielles Holz tötet schädliche Bakterien ab. Die Konstruktion ermöglicht somit eine fachgerechte Lebensmittelagerung und ermöglicht sowohl sehr flexible Nutzung, wie auch leichte Reparatur.
Lebensmitteletiketten und Inhaltsstoffe: Eine interaktive Anwendung über verarbeitete Lebensmittel
(2021)
Verarbeitete Lebensmittel werden im Alltag vieler Verbraucher häufig konsumiert. Dabei hat der Konsum über einen längeren Zeitraum hinweg einen negativen Einfluss auf die Gesundheit. Vor allem bei Produktverarbeitung, Zusatzstoffen und der Lebensmittelkennzeichnung ist häufig Aufklärung nötig. Dieses Projekt setzt an dieser Stelle an, räumt auf mit Missverständnissen rund um das Thema und schafft Klarheit.
In einer interaktiven App absolvieren die Anwendenden ein Quiz und werden mit ihrem eigenen Wissensstand konfrontiert. Auf jede Frage folgen eine kurze Information und eine Handlungsempfehlung, die Wissenslücken füllen. Mithilfe von Animationen werden die Informationen visuell untermauert.
Im Katalog finden Nutzende zu jedem Zusatzstoff spezifische Informationen zur Herstellung, Verarbeitung und gesundheitlichen Aspekten. Such-, Filter- und Speicherfunktion ermöglichen eine individuelle Anwendung.
Ziel der Arbeit war es eine spielerische Lernanwendung für Studierende der FH-Aachen zu entwickeln, um das individuelle Lernen zu fördern. Dabei lag der Fokus auf der Konzeptentwicklung eines Serious Games für die Fachhochschule Aachen. Abgeleitet von Motivationstheorien, Game Design Frameworks und Eigenschaften von digitalen spielerischen Konzepten wurde ein Vorgehensmodell zur Konzeptentwicklung eines Serious Games erstellt. Wichtige Punkte für die Anwendung waren eine intensive Austauschmöglichkeiten für Studierende und das Integrieren dieser in die Lehrveranstaltungen der FH-Aachen. In der abschließenden Evaluation wurde positives Feedback der Studierenden eingeholt und damit das Ziel der Arbeit erreicht.
Zusätzlich wurde für das erarbeitete Konzept die Wirtschaftlichkeit überprüft. Dafür wurde während der Bearbeitungszeit mit einem aufgestellten Team ein Business Plan für das Förderprogramm Start-Up transfer.NRW entwickelt.