Refine
Year of publication
Document Type
- Article (reviewed) (139) (remove)
Is part of the Bibliography
- yes (139) (remove)
Keywords
- Intelligentes Stromnetz (5)
- Lithiumbatterie (5)
- Batterie (3)
- Brennstoffzelle (3)
- Elektrolyt (3)
- Netzwerk (3)
- Automatisierungssystem (2)
- CDMA (2)
- Codierung (2)
- Computer Aided Design (CAD) (2)
- Computertomografie (2)
- E-Learning (2)
- Eingebettetes System (2)
- Elektrode (2)
- Gehirn (2)
- Glucose (2)
- Götz von Berlichingen (2)
- Kommunikation (2)
- Lithium-Ionen-Akkumulator (2)
- Mathematik (2)
- Nuklearmedizin (2)
- Prozessor (2)
- Radiologie (2)
- Steuerbarkeit (2)
- Synchronisierung (2)
- TRIZ (2)
- Trauma (2)
- Verteilung (2)
- cardiac resynchronization therapy (2)
- 3D modeling (1)
- 3d Heart Simulation (1)
- Abtragung (1)
- Adsorption (1)
- Agglomerat (1)
- Akustische Oberflächenwelle (1)
- Anomalie (1)
- Anti-Windup-Maßnahmen (1)
- Arbeitsfähigkeit (1)
- Asymmetric hearing loss (1)
- Asynchronmotor (1)
- Aufladung (1)
- Ausgleich (1)
- BACnet (1)
- Beamforming (1)
- Becquerel, Antoine Henri (1)
- Beobachter (1)
- Berechnung (1)
- Bildgebendes Verfahren (1)
- Bildgebung (1)
- Bimodal stimulation (1)
- Biomedizin (1)
- CI Stimulation (1)
- CRT (1)
- CST (1)
- Cardiac resynchronization therapy (1)
- Catheter Ablation (1)
- Cloud computing (1)
- Cochlea (1)
- Cochlear implant (1)
- Computer-Aided Design (1)
- Controlling (1)
- Datenbanksystem (1)
- Diagnostik (1)
- Discrete-time state controllers (1)
- Dissens (1)
- Drehmoment (1)
- Durchblutung (1)
- Effektivität (1)
- Einheit (1)
- Elastische Welle (1)
- Elastizität (1)
- Electrode Model (1)
- Elektrochemie (1)
- Elektrokardiografie (1)
- Elektrokinetische Erscheinung (1)
- Elektrolokomotive (1)
- Elektromotor (1)
- Elektronik (1)
- Elektronische Bibliothek (1)
- Elektrophysiologie (1)
- Energieversorgung (1)
- Entdeckung (1)
- Entfernung (1)
- Entwicklung (1)
- Epilepsie (1)
- Europa (1)
- FEM model (1)
- FFF (1)
- Festoxidbrennstoffzelle (1)
- Fingersystem, sensomotorisches controllergesteuertes (1)
- Fließeigenschaften (1)
- Flugdatenregistriergerät (1)
- Funktion (1)
- Gateway (1)
- Gebäudeleittechnik (1)
- Geschwindigkeit (1)
- Glasfaserkabel (1)
- Grauguss (1)
- Gruppe (1)
- Götz of the Iron Hand (1)
- HF Ablation (1)
- HF-Ablation (1)
- Haar (1)
- Haftung (1)
- Halswirbelsäule (1)
- Hand (1)
- Handprothese (1)
- Handprothese, Funktionsprüfung (1)
- Handy (1)
- Haustechnik (1)
- Herzfrequenz (1)
- Herzkrankheit (1)
- Herzschrittmacher (1)
- Hirnschädigung (1)
- Hirntumor (1)
- Hochdruck (1)
- Hochfrequenz (1)
- Hochgeschwindigkeit (1)
- Hochtemperaturbrennstoffzelle (1)
- Hörgerät (1)
- Hörschädigung (1)
- Implantat (1)
- Ingenieurausbildung (1)
- Instabilität (1)
- Intelligenter Zähler (1)
- Internet (1)
- Java (1)
- Java <Programmiersprache> (1)
- Johann Sebastian Bach (1)
- Katalyse (1)
- Kathode (1)
- Keil (1)
- Keilwelle (1)
- Kinderheilkunde (1)
- Klassifikation (1)
- Kommunikationsprotokoll (1)
- Konzentration (1)
- Kooperation (1)
- Laser (1)
- Lebensdauer (1)
- Leichtbau (1)
- Lichtbogenofen (1)
- Lithium (1)
- Ljapunow-Funktionen (1)
- Lokomotive (1)
- Lyapunov functions (1)
- Materialfluss (1)
- Medizin (1)
- Medizingeschichte (1)
- Medizintechnik (1)
- Messdatenerfassung (1)
- Messtechnik (1)
- Metallgitter (1)
- Methan (1)
- Mikrofilm (1)
- Mikroskopie (1)
- Mobilfunk (1)
- Mobilität (1)
- Modellierung (1)
- Modulation (1)
- Morphologie (1)
- Multimaterial-3-D-Druck (1)
- Nachweis (1)
- Netzwerkmanagement (1)
- Neuroendokrinologie (1)
- Nickel (1)
- Nutzfläche (1)
- Oberfläche (1)
- Obesity (1)
- Open Source (1)
- Operation (1)
- Organisation (1)
- Oxidation (1)
- Paganini, Niccolò (1)
- Perlen (1)
- Pharmazie (1)
- Plastische Chirurgie (1)
- Printed Electronics (1)
- Problemlösen (1)
- Process Management (1)
- Produktentwicklung (1)
- Prosthesis (1)
- Prosthetic hand (1)
- Prothese (1)
- Präfix (1)
- Psychiatrie (1)
- Qualität (1)
- Radnabenmotor (1)
- Radon, Johann (1)
- Rahmen (1)
- Ratte (1)
- Ravel, Maurice (1)
- Reaktion (1)
- Reaktionsmechanismus (1)
- Redoxpotenzial (1)
- Reibung (1)
- Rundfunk (1)
- Schienenfahrzeug (1)
- Schlafforschung (1)
- Schlafstörung (1)
- Schleudertrauma (1)
- Schmelze (1)
- Schrott (1)
- Schädel-Hirn-Trauma (1)
- Sicherheitstechnik (1)
- Sign of Hertoghe (1)
- Signaltechnik (1)
- Simulation (1)
- Single-sided deafness (1)
- Spannung (1)
- Spektroskopie (1)
- Spektrum (1)
- Sperrschicht (1)
- Sprache (1)
- Stabilität (1)
- Stadtfahrzeug (1)
- Stellgrößenbegrenzungen (1)
- Stickstoff (1)
- Streustrahlen (1)
- Struktur (1)
- Sucht (1)
- Suffix (1)
- Supraventricular Tachycardia (1)
- Symmetrie (1)
- Temperatur (1)
- Temperaturmessung (1)
- Terrestrisches Laserscanning (1)
- Thermoelement (1)
- Tiefbohrung (1)
- Tk (1)
- Ultraschall (1)
- Ultraschall-Computertomographie (1)
- University (1)
- Verfahren (1)
- Verfahrenstechnik (1)
- Versorgungstechnik (1)
- Verstehen (1)
- Verstärker (1)
- Verzögerung (1)
- Vielfalt (1)
- Vorzeitigkeit (1)
- Wasserstoff (1)
- Widerstand (1)
- Wirbelstromsensor (1)
- Wirbelsäule (1)
- Wirkungsprüfung (1)
- Wirtschaftsinformatik (1)
- Wärmeübertragung (1)
- Zeitdiskrete PI-Zustandsregler (1)
- Zustandsregler (1)
- active implantable medical devices (1)
- anti-windup methods (1)
- atrial fibrillation (1)
- audiometry (1)
- auditory training (1)
- biventricular pacing (1)
- biventricular stimulation (1)
- cardiac contractility modulation (1)
- cochlear implants (1)
- computer simulation technology (1)
- controllability (1)
- cryo ablation (1)
- cryoballoon (1)
- functional neuroimaging (1)
- heart failure (1)
- heart rhythm model (1)
- heart rhythm simulation (1)
- hermetic sealing (1)
- inductive transmission (1)
- left ventricular ECG (1)
- limitation of in-put variables (1)
- longevity (1)
- low frequency (1)
- m-learning (1)
- metallic housing (1)
- mobile applications development (1)
- mobile devices market (1)
- mobile web (1)
- observers (1)
- oxide electronics (1)
- performance of ring oscillators (1)
- pulmonary vein isolation (1)
- radiofrequency ablation (1)
- stability (1)
- time warping (1)
- titanium (1)
- transesophageal ECG (1)
- transesophageal atrial pacing (1)
- whiplash syndrome (1)
- Übertragung (1)
- Überwachung (1)
- „Eiserne Hand“ des Götz von Berlichingen (1)
- „Eiserne Hand“, Götz von Berlichingen (1)
Institute
- Fakultät Elektrotechnik und Informationstechnik (E+I) (bis 03/2019) (139) (remove)
Open Access
- Closed Access (58)
- Open Access (34)
- Closed (3)
- Gold (2)
Im Jahr 1504 verlor der deutsche Ritter Gottfried („Götz“) von Berlichingen seine
rechte Hand. Schon während seiner Genesung dachte er daran, die Hand zu ersetzen,
und beauftragte bald darauf die erste Handprothese, die sogenannte „Eiserne Hand“.
Jahre später wurde die aufwändigere zweite „Eiserne Hand“ gebaut. Wir haben die erste
Prothese auf der Basis früherer Literaturdaten von
Quasigroch (1982) mit Hilfe von 3-D
Computer-Aided Design (CAD) rekonstruiert. Dazu mussten einige Abmessungen angepasst
und ein paar Annahmen für das CAD-Modell gemacht werden. Die historische passive
Prothese des Götz von Berlichingen ist für die moderne Neuroprothetik interessant, da sie
eine Alternative zu komplexen invasiven Brain-Machine-Interface-Konzepten darstellen
könnte, wo diese Konzepte nicht notwendig, möglich oder vom Patienten gewünscht sind.
In this study, we tested the function of a replica of the over 500-year-old original of the
famous Franconian Imperial Knight Götz von Berlichingen’s first “iron hand”, which we
reconstructed by computer-aided design (CAD) and recently printed using a multi-material
3D printer. In different everyday tasks, the artificial hand prosthesis proved to be remarkably
helpful. Thus, the hand could hold a wine glass, some grapes, or a smartphone. With a
suitable pencil, even writing was possible without any problem. Although for all these
functions the healthy other hand was necessary to assist at the beginning, the artificial hand
is an astonishing mechanical aid with many possibilities. Therefore, in certain cases, the
non-invasive approach of a passive mechanical hand replacement, which is an individual,
quick and cheap solution due to modern 3D printing, may always be worth considering
also for today’s requirements.
Auf Grundlage der Computer-Aided-Design (CAD)-rekonstruierten ersten „Eisernen Hand“ des Götz von Berlichingen wird ein umgebautes, controllergesteuertes sensomotorisches Fingersystem auf seine Funktionalität beim Greifen von unterschiedlichen Gegenständen beschrieben und geprüft. Die elektronischen Finger, die den „Pinzettengriff“ nachahmen und automatisch bei dem zuvor eingestellten Anpressdruck abschalten, bewiesen eine bemerkenswerte Alltagstauglichkeit. Das vorgestellte Grundkonzept könnte eine Alternative bei der Entwicklung einfacher und kostengünstiger, aber dennoch gut einsatzfähiger bionischer Hände sein und zeigt einmal mehr, wie historische Ideen in die Gegenwart transferiert werden können.
A printed electronics technology has the advantage of additive and extremely low-cost fabrication compared with the conventional silicon technology. Specifically, printed electrolyte-gated field-effect transistors (EGFETs) are attractive for low-cost applications in the Internet-of-Things domain as they can operate at low supply voltages. In this paper, we propose an empirical dc model for EGFETs, which can describe the behavior of the EGFETs smoothly and accurately over all regimes. The proposed model, built by extending the Enz-Krummenacher-Vittoz model, can also be used to model process variations, which was not possible previously due to fixed parameters for near threshold regime. It offers a single model for all the operating regions of the transistors with only one equation for the drain current. Additionally, it models the transistors with a less number of parameters but higher accuracy compared with existing techniques. Measurement results from several fabricated EGFETs confirm that the proposed model can predict the I-V more accurately compared with the state-of-the-art models in all operating regions. Additionally, the measurements on the frequency of a fabricated ring oscillator are only 4.7% different from the simulation results based on the proposed model using values for the switching capacitances extracted from measurement data, which shows more than 2× improvement compared with the state-of-the-art model.
The separation of nitrogen and methane from hydrogen-rich mixtures is systematically investigated on a recently developed binder-free zeolite 5A. For this adsorbent, the present work provides a series of experimental data on adsorption isotherms and breakthrough curves of nitrogen and methane, as well as their mixtures in hydrogen. Isotherms were measured at temperatures of 283–313 K and pressures of up to 1.0 MPa. Breakthrough curves of CH4, N2, and CH4/N2 in H2 were obtained at temperatures of 300–305 K and pressures ranging from 0.1 to 6.05 MPa with different feed concentrations. An LDF-based model was developed to predict breakthrough curves using measured and calculated data as inputs. The number of parameters and the use of correlations were restricted to focus on the importance of measured values. For the given assumptions, the results show that the model predictions agree satisfactorily with the experiments under the different operating conditions applied.
n this work a mathematical model for describing the performance of lithium-ion battery electrodes consisting of porous active material particles is presented. The model represents an extension of the Newman-type model, accounting for the agglomerate structure of the active material particles, here Li(Ni1/3Co1/3Mn1/3)O2 (NCM) and Li(Ni1/3Co1/3Al1/3)O2 (NCA). To this goal, an additional pore space is introduced on the active material level. The space is filled with electrolyte and a charge-transfer reaction takes place at the liquid-solid interface within the porous active material particles. Volume-averaging techniques are used to derive the model equations. A local Thiele modulus is defined and provides an insight into the potentially limiting factors on the active material level. The introduction of a liquid-phase ion transport within the active material reduces the overall transport losses, while the additional active surface area within the agglomerate lowers the charge-transfer resistance. As a consequence, calculated discharge capacities are higher for particles modeled as agglomerates. This finding is more pronounced in the case of high C-rates
An Ultra-Low-Power RFID/NFC Frontend IC Using 0.18 μm CMOS Technology for Passive Tag Applications
(2018)
Battery-less passive sensor tags based on RFID or NFC technology have achieved much popularity in recent times. Passive tags are widely used for various applications like inventory control or in biotelemetry. In this paper, we present a new RFID/NFC frontend IC (integrated circuit) for 13.56 MHz passive tag applications. The design of the frontend IC is compatible with the standard ISO 15693/NFC 5. The paper discusses the analog design part in details with a brief overview of the digital interface and some of the critical measured parameters. A novel approach is adopted for the demodulator design, to demodulate the 10% ASK (amplitude shift keying) signal. The demodulator circuit consists of a comparator designed with a preset offset voltage. The comparator circuit design is discussed in detail. The power consumption of the bandgap reference circuit is used as the load for the envelope detection of the ASK modulated signal. The sub-threshold operation and low-supply-voltage are used extensively in the analog design—to keep the power consumption low. The IC was fabricated using 0.18 μm CMOS technology in a die area of 1.5 mm × 1.5 mm and an effective area of 0.7 mm2. The minimum supply voltage desired is 1.2 V, for which the total power consumption is 107 μW. The analog part of the design consumes only 36 μW, which is low in comparison to other contemporary passive tags ICs. Eventually, a passive tag is developed using the frontend IC, a microcontroller, a temperature and a pressure sensor. A smart NFC device is used to readout the sensor data from the tag employing an Android-based application software. The measurement results demonstrate the full passive operational capability. The IC is suitable for low-power and low-cost industrial or biomedical battery-less sensor applications. A figure-of-merit (FOM) is proposed in this paper which is taken as a reference for comparison with other related state-of-the-art researches.
The mobile devices related industries are subject to rapid change, driven by technological advances and dynamic consumer behaviour. Hence, the understanding of the mobile devices markets is an important step in the analysis phase of mobile applications development. In this paper, a brief description of the different markets is introduced followed by an analysis of the main features of the markets leaders' devices which are important in the development process of mobile web applications. Finally, approaches are proposed to deal with the mobile devices diversity.