8 research outputs found

    Entwicklung einer ALPHA Architektur einer lokationssensitiven Puppe fĂźr die hydropneumatische Animation

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    ALPHA ist die Architektur einer lokationssensitiven Puppe für hydropneumatische Animation. Es ist ein Animations-Eingabegerät. Die Puppe soll ein Objekt repräsentieren, welches animiert werden soll. Ihre Gliedmaßen, welche aus Knochen und Gelenken bestehen, sind beweglich. Sie wird an einen Computer angeschlossen und die gegenwärtige Stellung ihrer Gelenke kann mittels eines ebenfalls entwickelten Treibers von diesem Computer eingelesen werden. Des Weiteren wird erklärt was eine hydropneumatische Animation ist. Die Diplomarbeit weist die folgende Gliederung auf: • Motivation • Technische Grundlagen und State-Of-The-Art-Analyse • Anforderungsanalyse • Das eigene Konzept, die lokationssensitive Puppe (ALPHA) • Evaluation • Ausblick Die Motivation beschäftigt sich mit der Entwicklung der Filmanimation und einiger Errungenschaften in der Laufbahn der Animationstechnologischen Entwicklung. Die technischen Grundlagen beschränken sich auf die Funktionsweise von Messapparaturen, welche als Gelenkstellungssensoren fungieren können. Im Einzelnen sind das der optische Resolver, der Optoencoder und die Kombination von einem Drehpotentiometer und einem Analog/Digital-Wandler. Zur State-Of-The-Art-Analyse gehört die Erläuterung bereits entwickelter Stellungs- und Bewegungsmessender Technologien, wie das Stop-Motion-Verfahren, das Motion-Capturing, das Dinosaur-Input-Device und der Datenhandschuh. Eine Zusammenstellung der Defizite dieser Verfahren schließt dieses Kapitel ab. Die Analyse der Anforderungen an ein zu entwickelndes System ist im Kapitel Anforderungsanalyse zu finden. Zum eigenen Konzept gehört die gesamte Entwicklung einer lokationssensitiven Puppe. Die Puppe ist das Ebenbild des Skeletts eines zu animierendes Objekts. Sie besteht aus mehreren Gliedmaßen, welche an ihren Gelenken beweglich sind. Die Gelenkstellung wird von Potentiometern gemessen, dessen Signal ein A/D-Wandler empfängt. Die Umschaltung der einzelnen Messwerte erfolgt über Analog-Multiplexer. Die gesamte Steuerung der Bauteile und das Auslesen des A/D-Wandler werden durch einen Treiber über den Parallelport eines PCs gesteuert. Die Funktionsweise des Treibers und seine Implementierung werden ebenfalls in diesem Kapitel erläutert. Im Kapitel Evaluation befindet sich eine Bewertung des Konzepts und der Erfüllung der Anforderungsanalyse. Schließlich zeigt der Ausblick die Möglichkeiten der Anwendungen der Puppe und einen Blick in zukünftige Technologien.ALPHA is the architecture of a location sensitive doll for hydropneumatic animation. It is an animation input device. The doll is to represent an object, which needs to be animated. Its extremities, which consist of bones and joints, are mobile. It will be connected to a computer and the present position of their joints, can be read in, with a developed driver by attached computer. The further explanations shows what a hydro pneumatic animation is. The diploma thesis exhibits the following outlines: • Motivation • Technical bases and State of the Art analysis • Requirement analysis • The own concept, the location sensitive doll (ALPHA) • Evaluation • Overview The motivation covers the development of the film animation and some achievements in the evolution of the animation-technological development. The technical bases are limited to the function mode of the measure instruments which overtake a function of the joint position sensors. In details, there is the optical resolver, the opto-encoder and the combination of a rotary potentiometer and an analog/digital converter. To the “State of the art analysis” belongs the explanation of already developed “Position and movement-measuring technologies”, like the “Stop motion procedure”, “The motion capturing” “The dinosaur input device” and “The data glove”. A compilation of the deficits of these procedures concludes this chapter. The analysis of the demands to a developing system is to be found in the chapter “Requirement analysis”. To the own concept belongs the entire development of a location sensitive doll. The doll is the one to one image, of the skeleton of the object to be animated. It consists of several extremities, which are mobile at their joints. The joint position is measured by potentiometers, whose signal will be received by A/D transducer. The change-over of the individual measured values succeeds by analogue multiplexers. The entire controlling of the construction units and the selection A/D transducers are controlled by a driver, via the parallel port of a PC. The function mode of the driver and its implementation are likewise described in this chapter. In the chapter “Evaluation”, there is an appraisal of the concept and the fulfilment of the requirement analysis. Finally, the “Overview” shows the possibilities of applications of the doll and a view into future technologies

    Towards Ontology-Based Requirements Engineering for IoT-Supported Well-Being, Aging and Health

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    Ontologies serve as a one of the formal means to represent and model knowledge in computer science, electrical engineering, system engineering and other related disciplines. Ontologies within requirements engineering may be used for formal representation of system requirements. In the Internet of Things, ontologies may be used to represent sensor knowledge and describe acquired data semantics. Designing an ontology comprehensive enough with an appropriate level of knowledge expressiveness, serving multiple purposes, from system requirements specifications to modeling knowledge based on data from IoT sensors, is one of the great challenges. This paper proposes an approach towards ontology-based requirements engineering for well-being, aging and health supported by the Internet of Things. Such an ontology design does not aim at creating a new ontology, but extending the appropriate one already existing, SAREF4EHAW, in order align with the well-being, aging and health concepts and structure the knowledge within the domain. Other contributions include a conceptual formulation for Well-Being, Aging and Health and a related taxonomy, as well as a concept of One Well-Being, Aging and Health. New attributes and relations have been proposed for the new ontology extension, along with the updated list of use cases and particular ontological requirements not covered by the original ontology. Future work envisions full specification of the new ontology extension, as well as structuring system requirements and sensor measurement parameters to follow description logic.Comment: 10 pages, 2 figures, 2 table

    SIRE Inspections on Oil Tankers

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    Ship Inspection Report Programme (SIRE) addresses concerns about sub-standard shipping in oil industry. As a part of the risk assessment physical inspection of the oil tanker is performed by accredited SIRE inspector and resulting report is available to charterers, ship operators, terminal operators and government bodies. In this article SIRE inspection is described and compared with other non-mandatory and mandatory inspections on oil tankers. Some potential consequences of tanker over-inspections are discussed

    IoT Wallet:Machine Learning-based Sensor Portfolio Application

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    In this paper an application for building sensor wallet is presented. Currently, given system collects sensor data from The Things Network (TTN) cloud system, stores the data into the Influx database and presents the processed data to the user dashboard. Based on the type of the user, data can be viewed-only, controlled or the top user can register the sensor to the system. Moreover, the system can notify users based on the rules that can be adjusted through the user interface. The special feature of the system is the machine learning service that can be used in various scenarios and is presented throughout the case study that gives a novel approach to estimate soil moisture from the signal strength of a given underground LoRa beacon node.Comment: 5 pages, 6 figures, in proceedings of the 5th International Conference on Smart and Sustainable Technologies 2020, SpliTech202

    Artificial Turf Increases the Physical Demand of Soccer by Heightening Match Running Performance Compared with Natural Grass

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    Modric, T, Esco, M, Perkovic, S, Basic, Z, Versic, S, Morgans, R, and Sekulic, D. Artificial turf increases the physical demand of soccer by heightening match running performance compared with natural grass. J Strength Cond Res 37(11): 2222–2228, 2023—This study aimed to determine differences in match running performance (MRP) of elite soccer players (n = 31) during matches played on artificial turf (AT) and natural grass (NG). The players' MRP (AT; 131 observations, NG; 135 observations) were collected during official matches (n = 32) using global positioning system and classified according to their playing positions as central defenders, central midfielders, fullbacks, forwards, and wingers. The MRP variables included total distance covered (TD), low-intensity running (LIR), moderate-intensity running (MIR), high-intensity running (HIR), total (Tacc) and high-intensity accelerations (Hacc), and total (Tdec) and high-intensity decelerations (Hdec). The influence of match outcome, location, and opponent quality was controlled for as contextual factors. Playing matches on AT resulted in (a) increased TD (Cohen's d (d) = 0.55, 0.61, and 0.28, respectively), MIR (d = 0.91, 0.79, and 0.49, respectively), and HIR (d = 0.67, 0.44, and 0.38, respectively) for central defenders, central midfielders, fullbacks; (b) increased Tacc (d = 0.38, 0.37, and 0.4, respectively) and Tdec (d = 0.31, 0.34, and 0.31, respectively) for central defenders, central midfielders, and wingers; and (c) decreased Hdec (d = −1.5) for forwards. These results show that playing on AT is more physically demanding for defensive and midfield players than playing on NG. Soccer coaches should consider implementing preparatory strategies that mitigate the increased demands of playing on AT for these players, especially before a competitive period when transitions between pitch surfaces routinely occur

    Analysis of SDR-Based RFID reader: Filling Out the Gaps

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    RFID reader implemented on a Software Defined Radio (SDR) platform is a desired environment for the ease experimentation and verification of varoius research contributions. It offers several features such as studying separately any part of a RFID reader for further modification and improvements. In the recent years, fruitful attempts for making the basement that facilitates the future researches were published. To begin from the sketch and start prototyping on the given platform, a big variety of information that has to be organized and learned due to comprehensive and complex topic mostly of interdisciplinary nature. On the other side, finding details are important for perceiving the whole functionality of the system and making the required changes. Tutorial-based description in one unique paper is hard to accomplish due to the volume of details. In this paper a heuristic method for filling out all the important and missing parts of the puzzle is given. Moreover, this paper gives a simplified but comprehensive view about making an RFID radio through SDR including their flow graphs, code blocks, and other important procedures with focus on practical and useful details crucial for fast implementation of any new research in the given platform

    Smart city configurations: A conceptual approach to assess smart city practices and outcomes

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    This paper proposes a novel conceptual framework as analytical tool to support the systematic and methodical investigation of smart city instantiations. Integrating existing fragmented perspectives, we propose three analytical dimensions (integration, automation and adaptivity) to describe the relationships between four foundational smart city aspects (technology, people, institutions and material environment). Together dimensions and foundational aspects create smart city configurations (SCCs).SCCs enable the systematic description, assessment and comparison of specific smart city instantiations. SCCs can further help to make transparent the basis for policy decisions and implicit assumptions of decision-makers aiding the legitimacy, explainability and accountability of smart city efforts
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