Refine
Year of publication
Document Type
- Conference Proceeding (396) (remove)
Institute
- Forschungszentrum Mikrotechnik (137)
- Technik | Engineering & Technology (83)
- Forschungszentrum Business Informatics (68)
- Department of Computer Science (Ende 2021 aufgelöst; Integration in die übergeordnete OE Technik) (62)
- Forschungszentrum Human Centred Technologies (52)
- Wirtschaft (50)
- Forschungszentrum Energie (29)
- Forschungsgruppe Empirische Sozialwissenschaften (24)
- Department of Engineering (Ende 2021 aufgelöst; Integration in die übergeordnete OE Technik) (19)
- Didaktik (mit 31.03.2021 aufgelöst; Integration ins TELL Center) (15)
Keywords
- arrayed waveguide gratings (9)
- Y-branch splitter (6)
- integrated optics (6)
- photonics (6)
- MMI splitter (5)
- AWG design (4)
- insertion loss (4)
- Arrayed waveguide gratings (3)
- Artificial Intelligence (incl. Robotics) (3)
- Crosstalk (3)
- Laser ablation (3)
- MMI splitters (3)
- Micromechanical devices (3)
- Optimization (3)
- Three-dimensional displays (3)
- cloud computing (3)
- evolution strategies (3)
- frequency 100 GHz (3)
- mutation strength (3)
- polymers (3)
- silicon nitride (3)
- transmission characteristics (3)
- virtual reality (3)
- 3D MMI splitter (2)
- 3D modeling (2)
- AAL (2)
- AWG-Analyzer tool (2)
- AWG-parameters tool (2)
- AWG-spectrometer (2)
- Algorithm Analysis and Problem Complexity (2)
- Altenheim (2)
- Ambient Assisted Living (2)
- Cameras (2)
- Cloud manufacturing (2)
- Constrained Optimization (2)
- Couplers (2)
- Data science (2)
- Demand side management (2)
- Digital twin (2)
- Discrete Mathematics in Computer Science (2)
- Evolution Strategies (2)
- Geruch (2)
- Gold (2)
- HEMT (2)
- I-divergence (2)
- Image Processing and Computer Vision (2)
- Industry 4.0 (2)
- Information Systems Applications (incl. Internet) (2)
- Konferenzschrift (2)
- Licht (2)
- MEMS (2)
- Machine Learning (2)
- Mathematical model (2)
- Measurement by laser beam (2)
- Modellprojekt (2)
- Monitoring (2)
- OCT (2)
- Ontologies (2)
- Optical coherence tomography (2)
- Optical device fabrication (2)
- Optical fibers (2)
- Palliativarbeit (2)
- Pattern Recognition (2)
- Photonics (2)
- Protocols (2)
- RESEARCH (2)
- Refractive index (2)
- SME (2)
- Schall (2)
- Semiconductor device measurement (2)
- SiO2 (2)
- Standards (2)
- Supply Chain Management (2)
- Tools (2)
- Touch (2)
- Value co-creation (2)
- Visualization (2)
- Y-branch (2)
- agile software development (2)
- arrayed waveguide grating (2)
- augmented (2)
- constrained optimization (2)
- convex integral functional (2)
- deep reactive ion etching (2)
- demultiplexing equipment (2)
- diamond (2)
- helmet mounted displays (2)
- integrated photonics (2)
- meta-es (2)
- optical beam splitters (2)
- optical communication equipment (2)
- optical splitting (2)
- process management (2)
- self-adaptation (2)
- silicon compounds (2)
- software infrastructure (2)
- software process improvement (2)
- virtual realities (2)
- wavelength division multiplexing (2)
- Ärztliche Koordination (2)
- 128-channel 10 GHz AWG design (1)
- 128-channel 10 GHz AWG simulation (1)
- 1x128 MMI splitter (1)
- 2x2 optical switch (1)
- 3D 1×4 Multimode Interference Splitter (1)
- 3D graphics (1)
- 3D manipulations (1)
- 3D objects (1)
- 3D optical splitters (1)
- 3D rigid objects (1)
- AGILE software development (1)
- AWG (1)
- AWG channel spacing (1)
- AWG design tool (1)
- AWG software tool (1)
- AWG transmission parameters (1)
- AWG-Parameters (1)
- AWG-based demultiplexers (1)
- AWG-parameter layout (1)
- AWG-parameter tool (1)
- Acceptance (1)
- Active & Assisted Living (1)
- Additive manufacturing (1)
- Aging (1)
- AlGaN-GaN (1)
- Alltagstaugliche Assistenzlösungen (1)
- Almost worst case densities (1)
- Altenpflege (1)
- Aluminum gallium nitride (1)
- Anesthesia (1)
- Apollo photonics (1)
- App usage (1)
- Assistenztechnologien (1)
- Auction-based production planning (1)
- Augmented Reality (1)
- Augmented reality (1)
- Authentication (1)
- Automatic Analyse Framework (1)
- Automobilindustrie (1)
- Benchmarking (1)
- Bewohnerorientierung (1)
- Biomedical Engineering (1)
- Biomedical monitoring (1)
- Blended Learning (1)
- Blender (1)
- Blockchain (1)
- Blood (1)
- Brain modeling (1)
- Breath Tests (1)
- Breath gas analysis (1)
- Bregman ball (1)
- Bregman distance (1)
- Browsers (1)
- Business Model Innovation (1)
- Business analytics (1)
- CMOS-Compatible (1)
- COMPUTER software development (1)
- Cardiac Output (1)
- Caritas (1)
- Casual Game Interaction Design (1)
- Ceramic capacitor (1)
- Cloud (1)
- Code Execution (1)
- Cognitive Load (1)
- Collaboration (1)
- Collaborative models (1)
- Color (1)
- Computation by Abstract Devices (1)
- Computational Biology/Bioinformatics (1)
- Computer Applications (1)
- Computer Graphics (1)
- Computer Simulation (1)
- Computers (1)
- Computers and Society (1)
- Computing methodologies (1)
- Constraint Handling (1)
- Constraints (1)
- Continuous mathematics (1)
- Controlling (1)
- Convex functions (1)
- Coupling structure (1)
- Covariance matrices (1)
- Covid-Pandemie (1)
- Creativity (1)
- Customs (1)
- Cyber-Physical Systems (1)
- DWDM (1)
- Data Mining and Knowledge Discovery (1)
- Data mining (1)
- Data models (1)
- Data visualization (1)
- Database Management (1)
- Databases (1)
- Death (1)
- Debt Bias (1)
- Decision-Making (1)
- Dental hard tissue ablation (1)
- Design Thinking (1)
- Didactics (1)
- Didaktik (1)
- Digital Business Ecosystems (1)
- Digital Ecosystems (1)
- Digital Transformation (1)
- Digital Twin (1)
- Digital boardgame (1)
- Digital collaboration tools (1)
- Digitalization (1)
- Digitisation (1)
- Disregard (1)
- Distance-Learning (1)
- Distributed computing (1)
- Distributed manufacturing (1)
- Diversity (1)
- Domestic hot water heater (1)
- Dynamic systems (1)
- EBDW lithography (1)
- EC2 compatible cloud infrastructures (1)
- ESG (1)
- Educational institutions (1)
- Electric potential (1)
- Electric vehicles (1)
- Electrodes (1)
- Electron tubes (1)
- Enamel (1)
- Encryption (1)
- Engineering Economics, Organization, Logistics, Marketing (1)
- Entrepreneurial setting (1)
- Entrepreneurship (1)
- Evolution strategy (1)
- Evolutionary Algorithms (1)
- Evolutionary algorithms (1)
- Execution environment (1)
- FINANCIAL management (1)
- FTTx networks (1)
- Feedback (1)
- Femtosecond phenomena (1)
- Ferroelectric losses (1)
- Fibre array (1)
- Financial institutions (1)
- Financial services (1)
- Fingers (1)
- Flipped Classroom (1)
- Flipped classroom (1)
- Food Industry (1)
- Fs-laser ablation (1)
- Füllbildsimulation (1)
- GPON access networks (1)
- GaAs (1)
- GaN-SiC (1)
- Gallium nitride (1)
- Gas sensor (1)
- Gaussian distribution (1)
- Gears (1)
- Geriatrics/Gerontology (1)
- Gesture recognition (1)
- Global optimization (1)
- Graphics (1)
- Greenfield Approach (1)
- Grey Box (1)
- HTC-VIVE (1)
- HVAC (1)
- HappyCat (1)
- Health Gluten-free diet (1)
- High-speed optical techniques (1)
- Human computer interaction (1)
- Human-in-the-loop (1)
- Humans (1)
- ICP (1)
- IDA (1)
- III-V semiconductors (1)
- INTERNAL auditing (1)
- IP networks (1)
- IP-Dip polymer (1)
- Image (1)
- Imageanalyse (1)
- Industrial Internet of Things (1)
- Industrie 4.0K (1)
- Industry (1)
- Influence (1)
- Information Security (1)
- Information theory (1)
- Injection molding (1)
- Innovation management (1)
- Interaction (1)
- Internet (1)
- Intrapreneurship (1)
- Irradiated tissue (1)
- Kerberos-based security concept (1)
- Kinect for Windows (1)
- LIPPS (1)
- Laser materials processing (1)
- Latency (1)
- Layout (1)
- Lebensdauermodellierung (1)
- Lehre und Matura (1)
- Lehrkonzept (1)
- Licensing (1)
- Light (1)
- Light propagation (1)
- Lighting (1)
- Linear programming (1)
- Literature review (1)
- Lithography (1)
- Live steam prediction (1)
- Living Lab (1)
- Loss (1)
- Loss measurement (1)
- MANAGERIAL accounting (1)
- MCSS (1)
- MEMS sensors (1)
- MMI (1)
- MMI Splitter (1)
- Machine learning (1)
- Manufacturing (1)
- Manufacturing-as-a-Service (1)
- Materials (1)
- Mathematics of computing (1)
- Mental Math Training (1)
- Microsoft HoloLens (1)
- Microsoft HoloLens head (1)
- Microsoft Kinect (1)
- Microsoft Windows (1)
- Mindsets (1)
- Minimization (1)
- Mixed reality (1)
- Mobile Game-Based Learning (1)
- Mobility (1)
- Model risk (1)
- Model selection (1)
- Modeling (1)
- Models and Principles (1)
- Models, Biological (1)
- Monitoring system (1)
- Motion Capturing (1)
- Motion Detection (1)
- Motivation (1)
- Multimedia Information Systems (1)
- Multimode interferece (1)
- Multiple Regression (1)
- Natural Language Processing (1)
- Nickel (1)
- Noise measurement (1)
- Nondestructive evaluation technologies (1)
- OCT on-chip (1)
- Online-Kurs (1)
- Online-Lehre (1)
- Open innovation (1)
- Optical crosstalk (1)
- Optical fiber sensors (1)
- Optical losses (1)
- Optical performance (1)
- Optical polarization (1)
- Optical properties (1)
- Optical refraction (1)
- Optimum charging strategy (1)
- Optiwave photonic tool (1)
- Optiwave software tool (1)
- Organisationssoziologie (1)
- PON (1)
- PV (1)
- Painless treatment (1)
- Parallel computing (1)
- Payoff function (1)
- Peak demand (1)
- Persuasion (1)
- Pflegeheim (1)
- Photonics Explorer (1)
- Picosecond laser ablation (1)
- Pilot Projects (1)
- Playing Engagement (1)
- Polymer AWG (1)
- Polymer based optical splitters (1)
- Problem Solving Environment (1)
- Product Safety Risk (1)
- Product design (1)
- Production/Logistics (1)
- Progress rate analysis (1)
- Propagation losses (1)
- Prädiktoren (1)
- Psychology (1)
- Pump-probe microscopy (1)
- Pythagorean identity (1)
- Quadruple helix (1)
- Quadruple helix clusters (1)
- Quality control (1)
- Quantum dot lasers (1)
- Quantum dots (1)
- R & D/Technology Policy (1)
- R-soft photonic tool (1)
- Rapid service prototyping (1)
- Rastrigin function (1)
- Ray-ES algorithm (1)
- Reallabor (1)
- Reasoning (1)
- Regeneration (1)
- Regressionsanalyse (1)
- Remote co-creation (1)
- Resists (1)
- Risk measure (1)
- Roboter (1)
- Role play (1)
- Rotated Klee-Minty Problem (1)
- Scent (1)
- Schottky diodes (1)
- Scientific Data Preservation (1)
- Scientific Dataspace (1)
- Search problems (1)
- Second harmonic seeding (1)
- Self-Organisation (1)
- Semiconducting metal oxide (1)
- Semiconductor lasers (1)
- Sensing applications (1)
- Sensitivity (1)
- Sensor (1)
- Sensors (1)
- Serious Game (1)
- Serious games (1)
- Servers (1)
- Service interaction (1)
- Service-dominant logic (1)
- Servitization (1)
- Shape (1)
- Si3N4 (1)
- Si3N4 based AWG spectrometer (1)
- Si3N4 based AWGs (1)
- SiC substrates (1)
- SiN Photonics (1)
- SiN passive optical components (1)
- SiNx thin films (1)
- Silicon (1)
- Silicon carbide (1)
- Simulation (1)
- Smart cities (1)
- Smart service (1)
- Smart service development (1)
- Smart services (1)
- Smart specialization (1)
- Smart systems Circular economy (1)
- Social Justice (1)
- Social Work (1)
- Social innovation (1)
- Software framework (1)
- Sound (1)
- Sozialtechnologie (1)
- Spenden (1)
- Spendenmotivation (1)
- Spendenmotive (1)
- Strategy (1)
- Stress testing (1)
- Substrates (1)
- Subwavelength structures (1)
- Supervised learning (1)
- Surfaces (1)
- Survey (1)
- Sustainable Smart Service (1)
- Swinburne (1)
- TM-polarized light (1)
- Teaching support (1)
- Technological innovation (1)
- Telecommunications (1)
- Temperature characterization (1)
- Temperature measurement (1)
- Temperature stability (1)
- Theoretical Analysis (1)
- Theorie (1)
- Thermal power plant (1)
- Tool selection (1)
- Training (1)
- Ultra-Dense WDM (1)
- Ultraschall (1)
- Ultrashort laser pulses (1)
- Ultrasound (1)
- Uncertainty (1)
- Unidirectional communication (1)
- Unterbewusste Beeinflussung (1)
- Upper bound (1)
- Urban innovation (1)
- Usability (1)
- User Interfaces and Human Computer Interaction (1)
- User engagement (1)
- User interface (1)
- VM-instances (1)
- VR environment (1)
- VR environments (1)
- VR sets (1)
- VR-Goggles (1)
- Vorarlberg (1)
- Vorarlberger Lehrlingsmodell (1)
- Vorarlberger Unternehmen (1)
- Waveguide photonic building blocks s (1)
- Wavelength measurement (1)
- Wet etching (1)
- Windows (1)
- Worst case density (1)
- X-rays (1)
- XG-PON access networks (1)
- Y-branch optical splitter (1)
- Y-branch waveguide shape modelling (1)
- Zielgruppenbefragung (1)
- Zuverlässigkeitsanalyse (1)
- absorption spectra (1)
- abstraction (1)
- access network (1)
- activity based costing (1)
- ad hoc networks (1)
- ad hoc optimization approach (1)
- adaptation (1)
- adaption (1)
- algorithms and complexity (1)
- alignment marks (1)
- almost worst scenarios (1)
- aluminium compounds (1)
- artificial (1)
- asymmetric splitting ratio (1)
- augmented reality (1)
- autoethnography (1)
- background noise (1)
- backside damaging (1)
- breath gas analysis community (1)
- carbon (1)
- carbon allotropes (1)
- carbon nanotubes (1)
- classification (1)
- client authentication (1)
- cloud based analysis (1)
- cloud based e-science infrastructure (1)
- cloud manufacturing (1)
- cloud-based code execution framework (1)
- clustering (1)
- colourless 8-channel AWG (1)
- colourless AWG (1)
- commercial photonics software tool (1)
- commercial photonics tools (1)
- concept (1)
- confined ablation (1)
- confined laser ablation (1)
- constrained optimization problems (1)
- constraint handling by repair (1)
- convex integral functionals (1)
- cryptographic protocols (1)
- cultural heritage (1)
- cyclic AWG (1)
- data governance (1)
- data sharing (1)
- data-driven organization and culture (1)
- data-driven value creation (1)
- design and simulation (1)
- differential evolution (1)
- direct laser writing lithography (1)
- distributed manufactoring (1)
- distribution generation (1)
- distribution grids (1)
- dual plasma (1)
- dynamical systems approach (1)
- dynamics (1)
- e-Science Study Reproducibility (1)
- e-beam lithography (1)
- earned value method (1)
- elderly (1)
- electrochemical biosensor (1)
- electron beam lithography (1)
- electron-beam direct-write (1)
- elliptic constraint (1)
- elliptic model (1)
- epitaxial heterostructures (1)
- evolution strategy (1)
- evolutionary algorithms (1)
- evolutionary computation (1)
- f-divergence (1)
- f-divergence ball (1)
- femtosecond laser ablation technique (1)
- femtosecond laser processing (1)
- fiber array (1)
- finance (1)
- fitness noise (1)
- flexibility estimation (1)
- forward Kerberos tickets (1)
- frequency 10 GHz (1)
- gallium compounds (1)
- geometric intuition (1)
- geometry (1)
- graphical user interfaces (1)
- grey-box model (1)
- harsh environment (1)
- head mounted displays (1)
- heat pump (1)
- heterogeneous distributed e-science infrastructures (1)
- high channel Y-branch splitter (1)
- high channel count AWG (1)
- high electron mobility transistors (1)
- high index contrast AWG (1)
- high-dimensional search space (1)
- high-index contrast AWG (1)
- history education (1)
- hosting capacity (1)
- human centered design (1)
- human-computer interaction (1)
- hyperbolic constraint (1)
- immersion (1)
- industrial demand side management (1)
- information and communication technology (1)
- information geometry (1)
- intelligent thermal energy system (1)
- intelligent thermal energy systems (1)
- interactive application (1)
- interactive variations (1)
- interactive working (1)
- iterative software processes (1)
- knowledge representation (1)
- large-scale collaborations (1)
- laser ablation (1)
- lift-off free (1)
- light polarisation (1)
- light transmission (1)
- location based (1)
- low loss 1×64 y-branch splitter (1)
- low voltage grids (1)
- low-index 8-channel optical demultiplexer (1)
- machine learning (1)
- management accounting (1)
- material optimization (1)
- mathematical finance (1)
- matrix adaptation evolution strategy (1)
- medical computing (1)
- medical diagnostic imaging applications (1)
- message authentication (1)
- meta-evolution strategy (1)
- metal (1)
- microelectromechanical systems (1)
- micromechanic structures fabrication (1)
- microsensors (1)
- mixed reality (1)
- mixed reality smart glasses application (1)
- mobile computing (1)
- mobile presentations (1)
- moment constraints (1)
- motion capturing sensor systems (1)
- motion compensation (1)
- motivation stategy (1)
- multimode interference splitter (1)
- multiplexing equipment (1)
- nanogap (1)
- nanostructures (1)
- narrow channel spacing AWG (1)
- natural sensor (1)
- natural user interface (1)
- noisy ellipsoid model (1)
- ontologies (1)
- optical coherence tomography (1)
- optical communication systems (1)
- optical datatransmissison (1)
- optical design (1)
- optical design techniques (1)
- optical fibre losses (1)
- optical fibre networks (1)
- optical gas sensors (1)
- optical multiplexers//demultiplexers (1)
- optical noise (1)
- optical properties (1)
- optical splitters (1)
- optical transmission systems (1)
- optical waveguides (1)
- optimisation (1)
- optimization (1)
- packaging (1)
- parabolic constraint (1)
- passive optical networks (1)
- photolithography (1)
- photonic integrated circuit (1)
- photonics chip butt coupling (1)
- photonics integrated circuit (1)
- photonics integrated circuits (1)
- physical activity (1)
- pneumodynamics (1)
- population size (1)
- population size control (1)
- power splitter (1)
- prediction (1)
- processed food plant (1)
- progress rate (1)
- publications (1)
- pump-probe (1)
- real-parameter optimization problem (1)
- redox cycling (1)
- reflective writing (1)
- rib waveguide (1)
- rib waveguides (1)
- ridge waveguide (1)
- ridge waveguides (1)
- risk analysis (1)
- risk management (1)
- scene analysis (1)
- scientific private data (1)
- security credential injection (1)
- sharp ridge function (1)
- silica based AWG designs (1)
- simulated transmission characteristics (1)
- simulation-based optimization (1)
- small footprint (1)
- smart service ecosystems (1)
- social work (1)
- soft computing (1)
- software packages (1)
- spatial interaction (1)
- sphere model (1)
- split power (1)
- splitter (1)
- splitting properties (1)
- sputter etching (1)
- stand-alone software tool (1)
- stress-testing (1)
- switched mode power supply (1)
- symmetric splitting ratio (1)
- technology prototypes (1)
- telecommunication (1)
- telecommunications (1)
- theoretical analysis (1)
- thin film (1)
- tool design (1)
- ultra-DWDM (1)
- ultra-dense wavelength division multiplexing (1)
- unified process (1)
- user authentication (1)
- user-friendly application (1)
- virtual exploration (1)
- virtual machines (1)
- virtual reality study (1)
- waveguide structure (1)
- waveguide tapers (1)
- waveguides (1)
- wavelength 850 nm (1)
- wide band gap semiconductors (1)
- working environments (1)
- workrooms (1)
In dieser Arbeit wird Supervised Learning verwendet, um die Zuverlässigkeit von Schweißverbindungen zu evaluieren.
Um die Schweißqualität zu bestimmen, wurden End of Life Tests durchgeführt. Für die statistische Auswertung und Vorhersage der zu erwartenden Lebensdauer, wurden die Daten basierend auf einer logarithmischen Normalverteilung und mit einer multivariablen linearen Regression modelliert. Um die signifikanten Einflussfaktoren zu identifizieren, wurde eine schrittweise Regression genutzt. Die Ergebnisse zeigen, dass das entwickelte Modell die Zuverlässigkeit und Lebensdauer der Schweißverbindung akkurat abbildet und präzise Vorhersagen liefern kann.
Stress testing is part of today’s bank risk management and often required by the governing regulatory authority. Performing such a stress test with stress scenarios derived from a distribution, instead of pre-defined expert scenarios, results in a systematic approach in which new severe scenarios can be discovered. The required scenario distribution is obtained from historical time series via a Vector-Autoregressive time series model. The worst-case search, i.e. finding the scenario yielding the most severe situation for the bank, can be stated as an optimization problem. The problem itself is a constrained optimization problem in a high-dimensional search space. The constraints are the box constraints on the scenario variables and the plausibility of a scenario.
The latter is expressed by an elliptic constraint. As the evaluation of the stress scenarios is performed with a simulation tool, the optimization problem can be seen as black-box optimization problem. Evolution Strategy, a well-known optimizer for black-box problems, is applied here. The necessary adaptations to the algorithm are explained and a set of different algorithm design choices are investigated. It is shown that a simple box constraint handling method, i.e. setting variables which violate a box constraint to the respective boundary of the feasible domain, in combination with a repair of implausible scenarios provides good results.
Varying mindsets in Design Thinking. Why they change during the process and how to nudge them
(2019)
Unterscheidung als Grundoperation in sozialen Systemen. Eine sozialkybernetische Betrachtung
(2014)
Ultrafast-laser manufacture of radially emitting optical fiber diffusers for medical applications
(2018)
Towards a high productivity automatic analysis framework for classification. An initial study
(2013)
A trend from centralized to decentralized production is emerging in the manufacturing domain leading to new and innovative approaches for long-established production methods. A technology supporting this trend is Cloud Manufacturing, which adapts technologies and concepts known from cloud computing to the manufacturing domain. A core aspect of Cloud Manufacturing is representing knowledge about manufacturing, e.g., machine capabilities, in a suitable form. This knowledge representation should be flexible and adaptable so that it fits across various manufacturing domains, but, at the same time, should also be specific and exhaustive. We identify three core capabilities that such a platform has to support, i.e., the product, the process and the production.We propose representing this knowledge in semantically specified knowledge graphs, essentially creating three through features interconnected ontologies each representing a facet of manufacturing. Finally, we present an exemplary implementation of a Cloud Manufacturing platform using this representation and its advantages.
As the boundary between real and virtual life is becoming increasingly blurred, researchers and practitioners are looking for ways to integrate the two intending to improve human lives in a plethora of domains. A cutting-edge concept is the design of Digital Twins (DT), having a broad range of implications and applications, spanning from education, training, as well as safety and productivity in the workplace. An emergent approach for implementing DTs is the usage of mixed reality (MR) and augmented reality (AR), which are well aligned with merging real and virtual objects to enhance the human’s ability to interact with and manage DTs. Yet, this is still a novel area of research and, as such, a grounded understanding of the current state, challenges, and open questions is still lacking. Towards this, we conducted a PRISMA-based literature review of scientific articles and book chapters dealing with the use of MR and AR for digital twins. After a thorough screening phase and eligibility check, 25 papers were analyzed, sorted and compared by different categories like research topic (e.g., visualization, guidance), domain (e.g., manufacturing, education), paper type (e.g., design study, evaluation), evaluation type (user study, case study or none), used hardware (e.g., Microsoft HoloLens, mobile devices) as well as the different outcomes (result type and topic, problems, outlook). The major finding of this research survey is the predominant focus of the reviewed papers on the technology itself and the neglect of factors regarding the users. We, therefore, encourage researchers in this area to keep the importance of ease and joy of use in mind and include users in multiple stages of their work.
The main aims of this work are the validation of the developed process of gluing a single-mode optical fiber array with a photonic chip and the selection of a more suitable adhesive from the two adhesives being compared. An active alignment system was used for adjusting the two optical fiber arrays to a photonics chip. The gluing was done by two compared UV curable adhesives applied in the optical path. The insertion losses of glued coupling were measured and investigated at two discrete wavelengths 1310 nm and 1550 nm during temperature testing in the climatic chamber according to Telcordia GR_1209_Corei04 [3]. The measurement, investigation, and comparison of insertion losses of the glued coupling at the spectral band from 1530 nm to 1570 nm were done immediately after gluing process and after three temperature cycles in the climatic chamber with one month delay.
In this paper we report on the experimental test set-up for the temperature characterization of fiber array to photonics chip butt coupling at 1310 nm and 1550 nm wavelengths. The alignment and gluing of fiber arrays to photonics chip were done by automated active alignments system and they were fixed themselves by UV curable epoxy adhesive. Temperature changes of coupling insertion losses are measured and investigated for two different UV adhesives during three temperature cycles from -40 °C to 80 °C in climatic chamber. Spectral dependence of insertion losses was measured and compared before and after three temperature cycles for 1530 nm to 1570 nm spectral range at room temperature.
During two studies the influence of technologies on sleep were analyzed. The first one is about the effect of light on the circadian rhythm and as a consequence on sleep quality of persons in a vegetative state. The second one, which is still running, surveys the influence of several technologies on the sleep of elderly people living in a nursing home.
Tap or swipe
(2023)
Grey Box models provide an important approach for control analysis in the Heating, Ventilation and Air Conditioning (HVAC) sector. Grey Box models consist of physical models where parameters are estimated from data. Due to the vast amount of component models that can be found in literature, the question arises, which component models perform best on a given system or dataset? This question is investigated systematically using a test case system with real operational data. The test case system consists of a HVAC system containing an energy recovery unit (ER), a heating coil (HC) and a cooling coil (CC). For each component, several suitable model variants from the literature are adapted appropriately and implemented. Four model variants are implemented for the ER and five model variants each for the HC and CC. Further, three global optimization algorithms and four local optimization algorithms to solve the nonlinear least squares system identification are implemented, leading to a total of 700 combinations. The comparison of all variants shows that the global optimization algorithms do not provide significantly better solutions. Their runtimes are significantly higher. Analysis of the models shows a dependency of the model accuracy on the number of total parameters.
Through mandatory ESG (environmental, social, governance) reporting large companies must disclose their ESG activities showing how sustainability risks are incorporated in their decision-making and production processes. This disclosure obligation, however, does not apply to small and medium-sized enterprises (SME), creating a gap in the ESG dataset. Banks are therefore required to collect sustainability data of their SME customers independently to ensure complete ESG integration in the risk analysis process for loans. In this paper, we examine ESG risk analysis through a smart science approach laying the focus on possible value outcomes of sustainable smart services for banks as well as for their (SME) customers. The paper describes ESG factors, how services can be derived from them, targeted metrics of ESG and an ESG Service Creation Framework (business ecosystem building, process model, and value creation). The description of an exemplary use case highlighting the necessary ecosystem for service creation as well as the created value concludes the paper.
With the emergence of the recent Industry 4.0 movement, data integration is now also being driven along the production line, made possible primarily by the use of established concepts of intelligent supply chains, such as the digital avatars. Digital avatars – sometimes also called Digital Twins or more broadly Cyber-Physical Systems (CPS) – are already successfully used in holistic systems for intelligent transport ecosystems, similar to the use of Big Data and artificial intelligence technologies interwoven with modern production and supply chains. The goal of this paper is to describe how data from interwoven, autonomous and intelligent supply chains can be integrated into the diverse data ecosystems of the Industry 4.0, influenced by a multitude of data exchange formats and varied data schemas. In this paper, we describe how a framework for supporting SMEs was established in the Lake Constance region and describe a demonstrator sprung from the framework. The demonstrator project’s goal is to exhibit and compare two different approaches towards optimisation of manufacturing lines. The first approach is based upon static optimisation of production demand, i.e. exact or heuristic algorithms are used to plan and optimise the assignment of orders to individual machines. In the second scenario, we use real-time situational awareness – implemented as digital avatar – to assign local intelligence to jobs and raw materials in order to compare the results to the traditional planning methods of scenario one. The results are generated using event-discrete simulation and are compared to common (heuristic) job scheduling algorithms.
The role of entrepreneurs and intrapreneurs in the current zeitgeist is to drive innovation, re-shape rigid, established processes in business as well as for consumers. They use new viewpoints to pioneer new (business) models which focus on ‘smartness’ rather than the purely monetary and short-sighted models of yesteryear. Fostering and supporting the culture of this current zeitgeist is a mayor challenge for entre- and intrapreneurial support infrastructures, namely startup centres and innovation hubs of universities and other public institutions as well as innovation centres of private companies. Hereby, support may range from access to funding over provision of resources such as offices or computing hardware to coaching in the development of business ideas and strategic roadmaps for product and service deployment. In this paper, we focus on describing the status-quo of afore- mentioned support infrastructures in Vorarlberg and the Lake Constance region, then extend the scope to existing (international) approaches for aiding founders and inno- vators in the development of smart services. An analysis of success stories of the Vorarlberg startup centre ‘startupstube’ and other initiatives including their compar- ison to international counterparts builds the basis for a methodological framework for (service science) coaching in entre- and intrapreneurial support infrastructures. The paper is concluded by the description of a framework for choosing the right methods and tools to create service value in entre-/intrapreneurship based upon tested, proven know-how and for defining support infrastructure needs based upon pre-defined stakeholder and target groups as well as the (industry) sectors of the innovators.
Smart Room Visualisierung
(2010)
Smart services disrupt business models and have the potential to stimulate the circular economy transition of regions, enabling an environmentally friendly atmosphere for sustainable and innovation-driven growth of regions. Although smart services are powerful means for deploying circular economy goals in industrial practices, there is little systematic guidance on how the adoption of smart services could improve resource efficiency and stimulate smart regional innovation-driven growth, enabled through circular design. Implemented in the scope of Vorarlberg’s smart specialization strategy, this paper contributes to the literature on the circular economy and regional innovation-driven growth by assessing critical factors of the value creation and value capture implemented within the scope of the quadruple helix system. By identifying the main challenges and opportunities of collaborative value creation and value capture in setting-up smart circular economy strategies and by assessing the role of innovation actors within the quadruple helix innovation system, the study provides recommendations and set of guidelines for managers and public authorities in managing circular transition. Finally, based on the analysis of the role of actors in creating shared value and scaling-up smart circular economy practices in the quadruple helix innovation systems, the paper investigates the role of banks as enablers of circular economy innovation-driven regional growth and smart value creation.
Silicon nanophotonics
(2013)
Parametric anti-resonance is a phenomenon that occurs in systems with at least two degrees of freedom; this can be achieved by periodically exciting some parameters of the system. The effect of this properly tuned periodicity is to increase the dissipation in the system, which leads to a raising in the effective damping of vibrations. This contribution presents the design of an open-loop control to reduce the settling time using the anti-resonance concept. The control signal consists of a quasi-periodic signal capable of transferring the system’s oscillations from one mode to another mode of the system. The general averaging technique is used to characterize the dynamics, particularly the so-called slow dynamics of motion. With this analysis, the control signal is designed for the potential application of a microelectromechanical sensor arrangement; for this specific example, up to 96.8% reduction of settling time is achieved.
ROS 2 in Embedded Systemen
(2022)
Das Robot Operating System in seiner zweiten Version (ROS 2) findet zunehmend Verwendung und das nicht nur in Robotern. Dieser Beitrag gibt einen Überblick über den Aufbau und die Funktion von ROS 2. Die wesentlichen Elemente werden vorgestellt, das Publish-Subscribe-Konzept, das der Kommunikation zugrunde liegt, wird erläutert. Die Anforderungen von ROS 2 an Hardware und Betriebssystem werden beleuchtet und es werden Betrachtungen zu dessen Echtzeitverhalten gemacht.
To create a map of an unknown area, autonomous robots must follow a strategy to explore the area without knowing the optimal paths to reduce the time needed to map the whole area. To reduce the time to accomplish this task, multiple robots can work together to create a map in a more efficient way. However, without proper coordination, the time a team of autonomous robots needs to explore the unknown area can exceed the time needed by a single robot. To counteract the challenges, a shared infrastructure is needed which extracts useful information for the individual robots out of the shared information of all robots so the exploration can be coordinated. These measures introduce new challenges to the system, concerning the load of the communication infrastructure as well as the overall task of exploring and mapping becoming dependent on the correct communication and robustness of the shared team infrastructure. Therefore, the amount of communication and dependency of each individual robot of the rest of the other robots of the team must be reduced to ensure that the robots can continue working even if the communication with the shared infrastructure fails.
The properties of SiC and diamond make them attractive materials for MEMS and sensor devices. We innovated specific laser ablation techniques to fabricate membranes and cantilevers made of SiC or nano-(micro-) crystalline diamond films grown on Si/SiO2 substrates by microwave chemical vapour deposition (MWCVD). We started research to generate surface moulds to grow corrugated diamond films for membranes and cantilevers. A software tool was developed to support the design of micromechanical cantilevers. We can measure deformation and resonant frequency of diamond cantilevers and identify the global mechanical properties. A benchmark against finite element simulations enables an inverse identification of the specific system parameters and simplifies the characterization procedure.