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Erscheinungsjahr
- 2020 (141) (entfernen)
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- Wissenschaftlicher Artikel (60)
- Vorlesung (36)
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- Teil eines Buches (Kapitel) (5)
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Schlagworte
- Robotik (13)
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- 3D Modell (7)
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- DRZ (3)
- Deutsches Rettungsrobotik-Zentrum (3)
- SLAM (3)
- Smart City (3)
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- Erweiterte Realität <Informatik> (2)
- Europäische Zentralbank (2)
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Institut
- Wirtschaft und Informationstechnik Bocholt (34)
- Informatik und Kommunikation (27)
- Wirtschaftsrecht (27)
- Wirtschaft Gelsenkirchen (11)
- Westfälisches Institut für Gesundheit (6)
- Elektrotechnik und angewandte Naturwissenschaften (5)
- Westfälisches Energieinstitut (5)
- Institut für biologische und chemische Informatik (3)
- Institut Arbeit und Technik (1)
- Institut für Internetsicherheit (1)
Autonomy and self-determination are fundamental aspects of living in our society. Supporting people for whom this freedom is limited due to physical impairments is the fundamental goal of this thesis. Especially for people who are paralyzed, even working at a desk job is often not feasible. Therefore, in this thesis a prototype of a robot assembly workstation was constructed that utilizes a modern Augmented Reality (AR)-Head-Mounted Display (HMD) to control a robotic arm. Through the use of object pose recognition, the objects in the working environment are detected and this information is used to display different visual cues at the robotic arm or in its vicinity. Providing the users with additional depth information and helping them determine object relations, which are often not easily discernible from a fixed perspective.
To achieve this a hands-free AR-based robot-control scheme was developed, which uses speech and head-movement for interaction. Additionally, multiple advanced visual cues were designed that utilize object pose detection for spatial-visual support. The pose recognition system is adapted from state-of-the-art research in computer vision to allow the detection of arbitrary objects with no regard for texture or shape.
Two evaluations were performed, a small user study that excluded the object recognition, which confirms the general usability of the system and gives an impression on its performance. The participants were able to perform difficult pick and place tasks with a high success rate. Secondly, a technical evaluation of the object recognition system was conducted, which revealed an adequate prediction precision, but is too unreliable for real-world scenarios as the prediction quality is highly variable and depends on object orientations and occlusion.
This thesis evaluates the effects of the GDPR using a technical and human-centric approach. We assess challenges service providers face when they want to design GDPR-proof web applications. On the technical side, we perform two large-scale measurement studies. The first study aims to illuminate third party loading dependencies in web applications. The second study provides a detailed analysis of the information-sharing networks between online adver-tising companies. The human-centric analysis studies how companies implemented the Right to Access and if users can profit from the new right.
TGA-Modelle in BIM-Projekten
(2020)
Die BIM-Methode erfasst in Deutschland mittlerweile alle Gewerke im Bauhauptgewerbe. Für die TGA-Branche hat sich gezeigt, dass die Priorität der Produkthersteller auf der Bereitstellung der Geometriedaten liegt. Weiterführende Metadaten und Attribute (z. B. Material, Masse, Preise, Leistungsdaten) sind oftmals nur in reduzierter Form oder gar nicht vorhanden. An exemplarischen Beispielen von RLT-Reräten und Komponenten werden die geometrischen und semantischen Möglichkeiten beim IFC-Format untersucht.
A systematic method for obtaining a novel electrode structure based on PtCoMn ternary alloy catalyst supported on graphitic carbon nanofibers (CNF) for hydrogen evolution reaction (HER) in acidic media is proposed. Ternary alloy nanoparticles (Co0.6Mn0.4 Pt), with a mean crystallite diameter under 10 nm, were electrodeposited onto a graphitic support material using a two-step pulsed deposition technique. Initially, a surface functionalisation of the carbon nanofibers is performed with the aid of oxygen plasma. Subsequently, a short galvanostatic pulse electrodeposition technique is applied. It has been demonstrated that, if pulsing current is employed, compositionally controlled PtCoMn catalysts can be achieved. Variations of metal concentration ratios in the electrolyte and main deposition parameters, such as current density and pulse shape, led to electrodes with relevant catalytic activity towards HER. The samples were further characterised using several physico-chemical methods to reveal their morphology, structure, chemical and electrochemical properties. X-ray diffraction confirms the PtCoMn alloy formation on the graphitic support and energy dispersive X-ray spectroscopy highlights the presence of the three metallic components from the alloy structure. The preliminary tests regarding the electrocatalytic activity of the developed electrodes display promising results compared to commercial Pt/C catalysts. The PtCoMn/CNF electrode exhibits a decrease in hydrogen evolution overpotential of about 250 mV at 40 mA cm−2 in acidic solution (0.5 M H2SO4) when compared to similar platinum based electrodes (Pt/CNF) and a Tafel slope of around 120 mV dec−1, indicating that HER takes place under the Volmer-Heyrovsky mechanism.
Synergien
(2020)
The set of transactions that occurs on the public ledger of an Ethereum network in a specific time frame can be represented as a directed graph, with vertices representing addresses and an edge indicating the interaction between two addresses.
While there exists preliminary research on analyzing an Ethereum network by the means of graph analysis, most existing work is focused on either the public Ethereum Mainnet or on analyzing the different semantic transaction layers using static graph analysis in order to carve out the different network properties (such as interconnectivity, degrees of centrality, etc.) needed to characterize a blockchain network. By analyzing the consortium-run bloxberg Proof-of-Authority (PoA) Ethereum network, we show that we can identify suspicious and potentially malicious behaviour of network participants by employing statistical graph analysis. We thereby show that it is possible to identify the potentially malicious
exploitation of an unmetered and weakly secured blockchain network resource. In addition, we show that Temporal Network Analysis is a promising technique to identify the occurrence of anomalies in a PoA Ethereum network.
Insofern sich Städte als „Unternehmen“ begreifen (sollen), werden Sportgroßveranstaltungen als „Standortfaktor“ benutzt, so dass die Förderung des Sports und seiner kulturellen Potentiale in den Hintergrund gedrängt wird. Dadurch ist aber die Zustimmung zu den großen Veranstaltungen des Sports nicht mehr ungeteilt. Zusätzlich besteht die Problematik, wie viel sich Städte die von ihnen (mit)ausgerichteten Sportgroßveranstaltungen etwas kosten lassen wollen, bzw. überhaupt noch können.
Mit einer interdisziplinären und kritischen Herangehensweise richtet der Band seinen Blick auf die Felder der Verwaltung, der Ökonomie und Politik sowie auf den Sport als kulturelle Praxis. Aus dieser Perspektive zeigt das Buch sport- und wirtschaftspolitische Orientierungen für einen angemessenen und konzeptionellen Umgang mit Sportgroßveranstaltungen auf.
Der Inhalt
• Kommunale Daseinsvorsorge und Sportgroßveranstaltungen
• Zentrale Aspekte und Wandel der Wirtschaftspolitik
• Die Stadt als „Unternehmen“
• Sportgroßveranstaltungen zwischen Kultur und weichem Standortfaktor
• Ökonomische Effekte und Defekte: sorgfältig, „kreativ“ oder unlauter berechnet
• Exkurs: Grand Départ der Tour de France
• Exkurs: Vor allem (zu viel) Fußball
• Konzepte, Handlungsmöglichkeiten, Perspektiven
Die Zielgruppen
• Lokale und regionale Akteure aus Politik und Verwaltung
• Akteure der Sportverbände und Zivilgesellschaft
• Lehrende und Studierende der Sportsoziologie und -ökonomie