137 research outputs found

    Development of an open access system for remote operation of robotic manipulators

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    Mestrado de dupla diplomação com a UTFPR - Universidade Tecnológica Federal do ParanáExploring the realms of research, training, and learning in the field of robotic systems poses obstacles for institutions lacking the necessary infrastructure. The significant investment required to acquire physical robotic systems often limits access and hinders progress in these areas. While robotic simulation platforms provide a virtual environment for experimentation, the potential of remote robotic environments surpasses this by enabling users to interact with real robotic systems during training and research activities. This way, users, including students and researchers, can engage in a virtual experience that transcends geographical boundaries, connecting them to real-world robotic systems though the Internet. By bridging the gap between virtual and physical worlds, remote environments offer a more practical and immersive experience, and open up new horizons for collaborative research and training. Democratizing access to these technologies means empower educational institutions and research centers to engage in practical and handson learning experiences. However, the implementation of remote robotic environments comes with its own set of technical challenges: communication, security, stability and access. In light of these challenges, a ROS-based system has been developed, providing open access with promising results (low delay and run-time visualization). This system enables remote control of robotic manipulators and has been successfully validated through the remote operation of a real UR3 manipulator.Explorar as áreas de pesquisa, treinamento e aprendizado no campo de sistemas robóticos apresenta obstáculos para instituições que não possuem a infraestrutura necessária. O investimento significativo exigido para adquirir sistemas robóticos físicos muitas vezes limita o acesso e dificulta o progresso nessas áreas. Embora as plataformas de simulação robótica forneçam um ambiente virtual para experimentação, o potencial dos ambientes robóticos remotos vai além disso, permitindo que os usuários interajam com sistemas robóticos reais durante atividades de treinamento e pesquisa. Dessa forma, os usuários, incluindo estudantes e pesquisadores, podem participar de uma experiência virtual que transcende as fronteiras geográficas, conectando-os a sistemas robóticos do mundo real por meio da Internet. Ao estabelecer uma ponte entre os mundos virtual e físico, os ambientes remotos oferecem uma experiência mais prática e imersiva, abrindo novos horizontes para a pesquisa colaborativa e o treinamento. Democratizar o acesso a essas tecnologias significa capacitar instituições educacionais e centros de pesquisa a se envolverem em experiências práticas e de aprendizado prático. No entanto, a implementação de ambientes robóticos remotos traz consigo um conjunto próprio de desafios técnicos: comunicação, segurança, estabilidade e acesso. Diante desses desafios, foi desenvolvida uma plataforma baseada em ROS, oferecendo acesso aberto com resultados promissores (baixo delay e visualização em run-time). Essa plataforma possibilita o controle remoto de manipuladores robóticos e foi validada com sucesso por meio da operação remota de um manipulador UR3 real

    Kant and Artificial Intelligence

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    How are artificial intelligence (AI) and the strong claims made by their philosophical representatives to be understood and evaluated from a Kantian perspective? Conversely, what can we learn from AI and its functions about Kantian philosophy’s claims to validity? This volume focuses on various aspects, such as the self, the spirit, self-consciousness, ethics, law, and aesthetics to answer these questions

    Electronic Literature as Digital Humanities

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    This book is available as open access through the Bloomsbury Open programme and is available on www.bloomsburycollections.com. Electronic Literature as Digital Humanities: Contexts, Forms & Practices is a volume of essays that provides a detailed account of born-digital literature by artists and scholars who have contributed to its birth and evolution. Rather than offering a prescriptive definition of electronic literature, this book takes an ontological approach through descriptive exploration, treating electronic literature from the perspective of the digital humanities (DH)––that is, as an area of scholarship and practice that exists at the juncture between the literary and the algorithmic. The domain of DH is typically segmented into the two seemingly disparate strands of criticism and building, with scholars either studying the synthesis between cultural expression and screens or the use of technology to make artifacts in themselves. This book regards electronic literature as fundamentally DH in that it synthesizes these two constituents. Electronic Literature as Digital Humanities provides a context for the development of the field, informed by the forms and practices that have emerged throughout the DH moment, and finally, offers resources for others interested in learning more about electronic literature

    The platform as ecosystem: Configurations and dynamics of governance and power

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    Digital ‘platforms’ owned and operated by powerful Big Tech companies have shaped and impacted social, economic, and political life in significant ways. Yet, platforms remain an ambiguous phenomenon. What exactly are these platforms? How can we identify and understand the features of their power? The platform as ecosystem explains how not merely the platforms themselves but especially their larger ‘ecosystems’ are important for understanding the unique features of platform governance and power. Platform ecosystems have become the dominant technological, organisational, and governance model for digital platforms over the past fifteen years. These ecosystems comprise many different types of users including end-consumers, software developers, marketers and advertisers, and business partners who build software tools, products, and services of their own ‘on top’ of the interfaces provided and controlled by leading platforms. These users each help build and expand platform ecosystems while negotiating governance and control by central platforms. This dissertation examines different aspects of platform ecosystems to determine how platforms’ material foundations or infrastructures relate to governance and power. It develops several novel empirical and historical approaches for studying the distinct material and relational features of digital platform ecosystems. This reveals how platforms derive considerable power from their ecosystems and provides unique empirical and historical insights into the technological, organisational, and evolutionary features of platform (and mobile app) ecosystems. These approaches and insights are relevant to digital media and platform researchers and help policymakers, regulators, and authorities worldwide dealing with the challenges of governing digital economies and societies

    AXMEDIS 2008

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    The AXMEDIS International Conference series aims to explore all subjects and topics related to cross-media and digital-media content production, processing, management, standards, representation, sharing, protection and rights management, to address the latest developments and future trends of the technologies and their applications, impacts and exploitation. The AXMEDIS events offer venues for exchanging concepts, requirements, prototypes, research ideas, and findings which could contribute to academic research and also benefit business and industrial communities. In the Internet as well as in the digital era, cross-media production and distribution represent key developments and innovations that are fostered by emergent technologies to ensure better value for money while optimising productivity and market coverage

    A architecture for MHEG objects

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    Hypermedia applications are one of the most recent and most demanding computer uses. It is accepted that one of the main impediments to their widespread use is the lack of standards, and the lack of Open Systems with the possibility of having documents interchangeable between different hardware and software platforms. Several standards are emerging, one of which is the one being developed by the ISO/IEC WG12 known as the Multimedia and Hypermedia Information Coding Expert Group (MHEG). As desktop systems become more powerful, one of the main users of hypermedia applications is the home market. Therefore it is important to have standards and applications suitable for those platforms. This work reviews existing proposals for hypermedia architectures and interchange standards. It then assesses the suitability of the MHEG standard for use in open, distributed, and extensible hypermedia systems. An architecture for the implementa­tion of MHEG objects taking into account the limitations imposed by current desktop computers is also proposed. To assess the suitability of the proposed architecture, a prototype has been imple­mented. An analysis of the performance obtained in the prototype is presented and conclusions on the requirements for future implementations drawn. Finally, some suggestions to improve the MHEG standard are made

    Augmented Reality in Chemistry Higher Education

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    Augmented reality (AR) has the capacity to afford virtual experiences that obviate the reliance on using two-dimensional representations of three-dimensional phenomena for teaching chemistry higher education, in addition to positioning students as the protagonists of the learning experience. Thus, the subsequent blending of constructivist pedagogical approaches and AR technology is logical, with this paradigm having enormous methodological potential. Using a combination of quantitative and qualitative instruments, this research project explored the cognitive and affective impacts of engagement with four developed educational interventions, supported using ChemFord, a developed AR application. Firstly, an AR-supported educational escape activity, based on topics of inorganic stereochemistry was constructed. Reported measures of competency were seen as a positive predictor of intrinsic motivation. However, this was not observed to be a positive predictor of academic performance. Next, a Game-Based Learning activity was developed, based on topics of the Valence Shell Electron Pair Repulsion theory. This activity was facilitated both synchronously and asynchronously, exploring the relationships between students’ attitudes, perceived cognitive load, spatial ability, and academic performance. Participants demonstrated significant improvements in spatial ability over the study period. In addition, a moderate correlation was found between spatial ability and VSEPR conceptual understanding. The third educational intervention, constructed within a framework of Cognitive Load Theory, illustrates how AR-supported worked examples may enhance learning of electrophilic aromatic substitution. The achievement motivation of learners was also explored, and how this may be impacted by the provision of AR technology and worked examples. Measures of challenge and interest were found to correlate positively with reported germane load, whereas reported extraneous load negatively correlated with measures of challenge and interest for students displaying higher prior relevant chemistry experience. Lastly, a peer instruction session, focusing on topics of coordination chemistry was facilitated. Students’ self-efficacy, response switching, and discussions were analysed, in addition to their interactions with the ChemFord application. Students with a lower assessment of their problem solving and science communication abilities were significantly more likely to switch their responses from right-to-wrong than students with a high assessment of those abilities

    The matrix revisited: A critical assessment of virtual reality technologies for modeling, simulation, and training

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    A convergence of affordable hardware, current events, and decades of research have advanced virtual reality (VR) from the research lab into the commercial marketplace. Since its inception in the 1960s, and over the next three decades, the technology was portrayed as a rarely used, high-end novelty for special applications. Despite the high cost, applications have expanded into defense, education, manufacturing, and medicine. The promise of VR for entertainment arose in the early 1990\u27s and by 2016 several consumer VR platforms were released. With VR now accessible in the home and the isolationist lifestyle adopted due to the COVID-19 global pandemic, VR is now viewed as a potential tool to enhance remote education. Drawing upon over 17 years of experience across numerous VR applications, this dissertation examines the optimal use of VR technologies in the areas of visualization, simulation, training, education, art, and entertainment. It will be demonstrated that VR is well suited for education and training applications, with modest advantages in simulation. Using this context, the case is made that VR can play a pivotal role in the future of education and training in a globally connected world
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