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3Open hardware and open design are part of a larger open source idea. It is the idea that authors, creators and inventors need not and should not be overly protective over who reuses their works, for what purpose they use them and in what manner, but rather that they would actually want to make their works free to use, to modify, to distribute and to build upon. It is the idea that ‘standing on the shoulder of giants’—first recorded in the twelfth century and attributed to Bernard of Chartres, commonly ascribed to Isaac Newton, e.g. on the British 2-pound-coin, delightfully studied by Robert K. Merton and popularised by Google Scholar—is a preferred mode of production, insight and creativity. This is because building on what others have already done does not require basic principles to be rediscovered over and over again. https://issuu.com/finnish-institute/docs/theopenbook_issuu_final
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The last decade has seen an increasing demand from the industrial field of computerized visual inspection. Applications rapidly become more complex and often with more demanding real time constraints. However, from 2004 onwards the clock frequency of CPUs has not increased significantly. Computer Vision applications have an increasing demand for more processing power but are limited by the performance capabilities of sequential processor architectures. The only way to get more performance using commodity hardware, like multi-core processors and graphics cards, is to go for parallel programming. This article focuses on the practical question: How can the processing time for vision algorithms be improved, by parallelization, in an economical way and execute them on multiple platforms?
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Das Prinzip Open Source ist ein Schlüsselelement für die Verbreitung von Technologie, das sich bei Software bereits als erfolgreich erwiesen hat. Ein Prinzip, das in den letzten zwei Jahrzehnten auch im Bereich der Hardware vorangeschritten ist. Doch die Entwicklung erscheint langsam. Nicht nur die Werkzeuge, auch Rohstoffe, Standardteile und das Fertigungs- Know-how variieren stark zwischen verschiedenen geografischen Standorten. Open Source-Projekte neigen eher dazu, sich zu verzweigen als zu konvergieren, was zu partieller und lokaler Optimierung führt. Jüngste Forschungsarbeiten mit Fab Labs und Herstellern untersuchen daher nicht nur die Technologie, sondern auch soziale Gemeinschaften, Geschäftsmodelle und Geschäftslebenszyklen von Open Source. Ein solcher Ansatz erhöht den Nutzen von Open-Source-Hardware als intermediäre Technologie.
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The installation of facilities replicating the realworld condition is often required for carrying out meaningful tests on new devices and for collecting data with the aim to create realistic device model. However, these facilities require huge investments, as well as areas where they can be properly installed. In this paper, we present a test infrastructure exploiting the concept of Remote Power Hardware-In-the-Loop (RPHIL), applied for characterizing the performances of a 8kW Proton Exchange Membrane (PEM) electrolyser installed at the Hanze University of Applied Sciences in Groningen (The Netherlands). The electrolyser is subjected to different test conditions imposed both locally and remotely. The results show that this measurement procedure is effective and can open new perspectives in the way to share and exploit the existing research infrastructure in Europe
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Laboratory experiments are important pedagogical tools in engineering courses. Restrictions related to the COVID-19 pandemic made it very difficult or impossible for laboratory classes to take place, resulting on a fast transition to simulation as an approach to guarantee the effectiveness of teaching. Simulation environments are powerful tools that can be adopted for remote classes and self-study. With these tools, students can perform experiments and, in some cases, make use of the laboratory facilities from outside of the University. This paper proposes and describes two free tools developed during the COVID-19 pandemic lock-down that allowed students to work from home, namely a set of simulation experiments and a Hardware-in-the-loop simulator, accessible 24/7. Two approaches in Python and C languages are presented, both in the context of Robotics courses for Engineering students. Successful results and student feedback indicate the effectiveness of the proposed approaches in institutions in Portugal and in the Netherlands.
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Dit project richt zich op de ontwikkeling van een robuust en energiezuinig Automatic Meter Reading (AMR)-systeem voor analoge meters in industriële omgevingen. Het systeem maakt gebruik van beeldherkenning om meterstanden automatisch uit te lezen, zelfs onder uitdagende omstandigheden zoals slechte verlichting, vervuiling en beschadigingen.
Het AMR-systeem bestaat uit drie onderdelen:
Een detectiemodel (YOLOv11nano) voor het lokaliseren van het cijferdisplay.
Een compact neuraal netwerk voor het classificeren van cijfers.
Een reconstructiemodel gebaseerd op een Graph Neural Network (GNN) voor het herstellen van vervormde of deels verborgen cijfers.
Door gebruik te maken van TinyML-technieken is het systeem geoptimaliseerd voor resource-beperkte hardware zoals microcontrollers, waardoor lokale, energiezuinige verwerking mogelijk is zonder netwerkverbinding.
Het GNN-reconstructiemodel is op dit moment nog niet geschikt voor embedded hardware en vormt een aandachtspunt voor verdere ontwikkeling.
Hoewel het systeem onder gecontroleerde omstandigheden goed presteert, is de robuustheid in realistische, industriële situaties nog beperkt.
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Offene freie Technik bezeichnet Entwürfe von technischen Objekten, die als (digitale) Daten frei, oftmals gratis, verfügbar sind zur weiteren Verwendung für alle. Offene freie Technik ist um die Jahrtausendwende als Analogie entstanden zur Free, Libre und Open Source Software, die mit der Freien-SoftwareBewegung der 1980er Jahre des 20. Jahrhunderts entstand.
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New technologies or approaches are being widely developed and proposed to be deployed in real energy systems to improve desired objectives; however supporting decision making processes to select best solutions in terms of performance and efficient following cost-benefit analysis require some sort of scientific evidence based tools. These tools should be reliable, robust, and capable of demonstrating the behavior and impact of newly developed devices or algorithms in different pre-defined scenarios. Therefore, new approaches and technologies need to be tested and verified using a safe laboratory test environment.
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Open source can be a key ingredient for the distribution of technology and has proven successful in software. The idea has also gained interest in the field of hardware over the last two decades; yet its development appears slow. Not only vary tooling, raw materials, standard parts, and manufacturing expertise widely across geographical locations. Projects tend to fork rather than to converge, leading to partial and local optimisations. Recent research with fab labs and makers therefore studies communities, business models, and business life cycles, rather than just technology. Such an approach increases the utility of open-source hardware as intermediary technology.
LINK
Op de dag van het Sportonderzoek 2023 in Groningen presenteerden we de resultaten van het evaluatie onderzoek naar Sportzones in Doornenburg en Gendt (gemeente Lingewaard). We focussen in deze presentatie op (veranderingen in) de objectieve en ervaren (verkeer)veiligheid en zichtbaarheid van het gebied. Sportzones zijn een strategie voor gemeenten om de omgeving beweegvriendelijk in te richten. In de opzet van het onderzoek is het BVO-model gebruikt. We onderscheiden hardware, software en orgware binnen de Sportzones. Focus van deze presentatie lag op de verkeersinfrastructurele aanpassingen dus hardware.
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