411 research outputs found

    LoRaWAN communication implementation platforms

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    A key role in the development of smart Internet of Things (IoT) solutions is played by wireless communication technologies, especially LPWAN (Low-Power Wide-Area Network), which are becoming increasingly popular due to their advantages: long range, low power consumption and the ability to connect multiple edge devices. However, in addition to the advantages of communication and low power consumption, the security of transmitted data is also important. End devices very often have a small amount of memory, which makes it impossible to implement advanced cryptographic algorithms on them. The article analyzes the advantages and disadvantages of solutions based on LPWAN communication and reviews platforms for IoT device communication in the LoRaWAN (LoRa Wide Area Network) standard in terms of configuration complexity. It describes how to configure an experimental LPWAN system being built at the Department of Computer Science and Telecommunications at Poznan University of Technology for research related to smart buildings

    Points of Exchange:Spatial Strategies for the Transition Towards Sustainable Urban Mobilities

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    Enhancing user experience and safety in the context of automated driving through uncertainty communication

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    Operators of highly automated driving systems may exhibit behaviour characteristic of overtrust issues due to an insufficient awareness of automation fallibility. Consequently, situation awareness in critical situations is reduced and safe driving performance following emergency takeovers is impeded. Previous research has indicated that conveying system uncertainties may alleviate these issues. However, existing approaches require drivers to attend the uncertainty information with focal attention, likely resulting in missed changes when engaged in non-driving-related tasks. This research project expands on existing work regarding uncertainty communication in the context of automated driving. Specifically, it aims to investigate the implications of conveying uncertainties under consideration of non-driving-related tasks and, based on the outcomes, develop and evaluate an uncertainty display that enhances both user experience and driving safety. In a first step, the impact of visually conveying uncertainties was investigated under consideration of workload, trust, monitoring behaviour, non-driving-related tasks, takeover performance, and situation awareness. For this, an anthropomorphic visual uncertainty display located in the instrument cluster was developed. While the hypothesised benefits for trust calibration and situation awareness were confirmed, the results indicate that visually conveying uncertainties leads to an increased perceived effort due to a higher frequency of monitoring glances. Building on these findings, peripheral awareness displays were explored as a means for conveying uncertainties without the need for focused attention to reduce monitoring glances. As a prerequisite for developing such a display, a systematic literature review was conducted to identify evaluation methods and criteria, which were then coerced into a comprehensive framework. Grounded in this framework, a peripheral awareness display for uncertainty communication was developed and subsequently compared with the initially proposed visual anthropomorphic uncertainty display in a driving simulator study. Eye tracking and subjective workload data indicate that the peripheral awareness display reduces the monitoring effort relative to the visual display, while driving performance and trust data highlight that the benefits of uncertainty communication are maintained. Further, this research project addresses the implications of increasing the functional detail of uncertainty information. Results of a driving simulator study indicate that particularly workload should be considered when increasing the functional detail of uncertainty information. Expanding upon this approach, an augmented reality display concept was developed and a set of visual variables was explored in a forced choice sorting task to assess their ordinal characteristics. Particularly changes in colour hue and animation-based variables received high preference ratings and were ordered consistently from low to high uncertainty. This research project has contributed a series of novel insights and ideas to the field of human factors in automated driving. It confirmed that conveying uncertainties improves trust calibration and situation awareness, but highlighted that using a visual display lessens the positive effects. Addressing this shortcoming, a peripheral awareness display was designed applying a dedicated evaluation framework. Compared with the previously employed visual display, it decreased monitoring glances and, consequentially, perceived effort. Further, an augmented reality-based uncertainty display concept was developed to minimise the workload increments associated with increases in the functional detail of uncertainty information.</div

    Dumb Cities: Spatial Media, Urban Communication, and the Right to the Smart City

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    A majority of the global population is now concentrated in cities, and the "smart city" model has emerged as the predominant paradigm for contemporary urban development. Employing networked infrastructures and big data for urban governance, the smart city promises innovative solutions for longstanding urban problems—using computer technologies to automate or monitor everything from traffic patterns to voting practices—while also posing new questions and dilemmas for city dwellers. The smart city model reworks traditional notions of urban rights, such as access to housing and public space, by implementing communication technologies that offer new possibilities for connection even as they create conditions for division and unequal access. How do the communication infrastructures deployed in smart city programs alter the communicative functions of urban spaces, and how might critical urban theory be updated in order to account for these emerging technologies? Focusing primarily on Pittsburgh, Pennsylvania, this project addresses these questions by investigating policies, practices, and infrastructures mediating civic engagement and urban communication in technologically-driven urban development. I survey several salient examples of smart city approaches including the use of “big data” approaches for urban governance, networked transportation infrastructures, and media interfaces for visualizing and interacting with space. This work focuses especially on how notions of citizenship and civic engagement are constructed in "smart" urban imaginaries, as well as the role of emergent technologies in mediating experiences of space and place. I advance the rhetorical skill and cunning intelligence of mĂȘtis as a conceptual lens for assessing and cultivating an engaged urban citizenship. I argue that rhetorics of “smart” urbanism discursively delegate ideals of civic engagement to technical infrastructures and processes, thereby occluding both longstanding and emergent disparities in urban communities

    Transport sector decarbonisation - a social sciences and humanities annotated bibliography

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    The challenge: * By 2014, transport had overtaken power companies as the sector with the highest carbon emissions across the European Union (EU). * From 1990 to 2014, EU road transport emissions rose by 17% and aviation emissions by 82%. Road transport accounted for 70% of EU transport emissions in 2014. Aim: * European energy policy has so far mainly relied on research from Science, Technology, Engineering and Mathematics (STEM) disciplines. Energy-related Social Sciences and Humanities (energy-SSH) have been significantly underrepresented. This bibliography provides a broad overview of SSH perspectives on transport decarbonisation. It is not intended to be comprehensive, but rather aimed at presenting initial insights into the variety of questions posed, areas explored, and methods used by SSH scholars and demonstrating their relevance for EU energy policy. Coverage: * This bibliography presents publications from History, Human Geography, Sociology, Urban Planning, Political Science, Psychology, Anthropology, Theology, Economics, Philosophy and Ethics, Criminology, as well as intersectional disciplines such as Transport, Tourism, and Gender studies. * In order to better represent SSH debates, some transport publications which were of wider relevance to decarbonisation (but did not solely focus on it) were included. Key findings: * Much research concerns technological fixes and individual consumer choices. Consumer research tends to focus on attitudes towards technologies or policies, what determines transport mode preference, or what might prompt mode shift. There is less research on institutional and systemic issues, as well as the role of corporations. * Since the 1990s, the so-called ‘Mobilities turn’ has become dominant, associated with Miriam Sheller, John Urry, Tim Cresswell and Marc AugĂ©. This paradigm emphasises the role of travel, globalisation and movement for our contemporary world. * A large volume of research was found on the car (including electric cars), cycling, commuting, and short distance urban travel. * Underrepresented topics include rural mobility, long distance travel, and shipping and freight. Walking has received far less decarbonisation focused enquiry than cycling. * Whilst not all EU research could be represented, intra-EU differences were noted: e.g. the greater importance of two wheelers in Latvia; how more children to walk to school in Eastern European countries; the renaissance of the tram in France; and the large proportion of urban Finns frequently driving to their rural second home. * Across the span of SSH, researchers frame the problem of transport decarbonisation differently (both from each other, and from more technical disciplines). These framings often point towards different solutions. For instance, they ask: what is the effect of technological, demographic and economic trends on transport emissions?; why do policymakers/scholars focus on certain transport solutions over others?; how do transport modes ‘compete’?; how does the meaning of transport change over time?; and why do we travel

    Lacan\u27s Cybernetics

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    This project explores the synchronicity of psychoanalytic and cybernetic practices from the mid-to-late nineteenth century by recovery and analysis of a shared material media culture. This project takes as a starting point the work of French psychoanalyst Jacques Lacan, who observed the affinity between cybernetics and psychoanalysis, “two roughly contemporaneous techniques,” related to the emergence of the two distinct types of sciences: exact and “conjectural.” I investigate their shared patterns of figuration in the two fields, before they developed significant, and even irreconcilable, differences. This project demonstrates that what Lacan discussed explicitly in the 1950s, particularly, in his “cybernetic” Seminar II, was an expression of a more implicit connection between cybernetics and psychoanalysis ab initio. It offers a media-archaeological account of the pre-history of psychoanalysis (or proto-psychoanalytic practices) that considers the development of the psychoanalytic technique both through and against the technological mediation. The final part of this dissertation switches from the subject of the architectural and institutional panopticon of the nineteenth century to the “interpassive” user-subject of the perverse panopticon of the social media network. My discussion resonates with the current concerns expressed both within academia and in the Lacanian clinic about the degree of mediation, the limits of surveillance, the capacity of the network to exploit the subject, the automation of the gadgets that manage our lives, and the symptoms produced by all these aspects of the human-machine assemblages or even the erasure thereof in the capitalist discourse of global economy

    The cockpit for the 21st century

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    Interactive surfaces are a growing trend in many domains. As one possible manifestation of Mark Weiser’s vision of ubiquitous and disappearing computers in everywhere objects, we see touchsensitive screens in many kinds of devices, such as smartphones, tablet computers and interactive tabletops. More advanced concepts of these have been an active research topic for many years. This has also influenced automotive cockpit development: concept cars and recent market releases show integrated touchscreens, growing in size. To meet the increasing information and interaction needs, interactive surfaces offer context-dependent functionality in combination with a direct input paradigm. However, interfaces in the car need to be operable while driving. Distraction, especially visual distraction from the driving task, can lead to critical situations if the sum of attentional demand emerging from both primary and secondary task overextends the available resources. So far, a touchscreen requires a lot of visual attention since its flat surface does not provide any haptic feedback. There have been approaches to make direct touch interaction accessible while driving for simple tasks. Outside the automotive domain, for example in office environments, concepts for sophisticated handling of large displays have already been introduced. Moreover, technological advances lead to new characteristics for interactive surfaces by enabling arbitrary surface shapes. In cars, two main characteristics for upcoming interactive surfaces are largeness and shape. On the one hand, spatial extension is not only increasing through larger displays, but also by taking objects in the surrounding into account for interaction. On the other hand, the flatness inherent in current screens can be overcome by upcoming technologies, and interactive surfaces can therefore provide haptically distinguishable surfaces. This thesis describes the systematic exploration of large and shaped interactive surfaces and analyzes their potential for interaction while driving. Therefore, different prototypes for each characteristic have been developed and evaluated in test settings suitable for their maturity level. Those prototypes were used to obtain subjective user feedback and objective data, to investigate effects on driving and glance behavior as well as usability and user experience. As a contribution, this thesis provides an analysis of the development of interactive surfaces in the car. Two characteristics, largeness and shape, are identified that can improve the interaction compared to conventional touchscreens. The presented studies show that large interactive surfaces can provide new and improved ways of interaction both in driver-only and driver-passenger situations. Furthermore, studies indicate a positive effect on visual distraction when additional static haptic feedback is provided by shaped interactive surfaces. Overall, various, non-exclusively applicable, interaction concepts prove the potential of interactive surfaces for the use in automotive cockpits, which is expected to be beneficial also in further environments where visual attention needs to be focused on additional tasks.Der Einsatz von interaktiven OberflĂ€chen weitet sich mehr und mehr auf die unterschiedlichsten Lebensbereiche aus. Damit sind sie eine mögliche AusprĂ€gung von Mark Weisers Vision der allgegenwĂ€rtigen Computer, die aus unserer direkten Wahrnehmung verschwinden. Bei einer Vielzahl von technischen GerĂ€ten des tĂ€glichen Lebens, wie Smartphones, Tablets oder interaktiven Tischen, sind berĂŒhrungsempfindliche OberflĂ€chen bereits heute in Benutzung. Schon seit vielen Jahren arbeiten Forscher an einer Weiterentwicklung der Technik, um ihre Vorteile auch in anderen Bereichen, wie beispielsweise der Interaktion zwischen Mensch und Automobil, nutzbar zu machen. Und das mit Erfolg: Interaktive BenutzeroberflĂ€chen werden mittlerweile serienmĂ€ĂŸig in vielen Fahrzeugen eingesetzt. Der Einbau von immer grĂ¶ĂŸeren, in das Cockpit integrierten Touchscreens in Konzeptfahrzeuge zeigt, dass sich diese Entwicklung weiter in vollem Gange befindet. Interaktive OberflĂ€chen ermöglichen das flexible Anzeigen von kontextsensitiven Inhalten und machen eine direkte Interaktion mit den Bildschirminhalten möglich. Auf diese Weise erfĂŒllen sie die sich wandelnden Informations- und InteraktionsbedĂŒrfnisse in besonderem Maße. Beim Einsatz von Bedienschnittstellen im Fahrzeug ist die gefahrlose Benutzbarkeit wĂ€hrend der Fahrt von besonderer Bedeutung. Insbesondere visuelle Ablenkung von der Fahraufgabe kann zu kritischen Situationen fĂŒhren, wenn PrimĂ€r- und SekundĂ€raufgaben mehr als die insgesamt verfĂŒgbare Aufmerksamkeit des Fahrers beanspruchen. Herkömmliche Touchscreens stellen dem Fahrer bisher lediglich eine flache OberflĂ€che bereit, die keinerlei haptische RĂŒckmeldung bietet, weshalb deren Bedienung besonders viel visuelle Aufmerksamkeit erfordert. Verschiedene AnsĂ€tze ermöglichen dem Fahrer, direkte Touchinteraktion fĂŒr einfache Aufgaben wĂ€hrend der Fahrt zu nutzen. Außerhalb der Automobilindustrie, zum Beispiel fĂŒr BĂŒroarbeitsplĂ€tze, wurden bereits verschiedene Konzepte fĂŒr eine komplexere Bedienung großer Bildschirme vorgestellt. DarĂŒber hinaus fĂŒhrt der technologische Fortschritt zu neuen möglichen AusprĂ€gungen interaktiver OberflĂ€chen und erlaubt, diese beliebig zu formen. FĂŒr die nĂ€chste Generation von interaktiven OberflĂ€chen im Fahrzeug wird vor allem an der Modifikation der Kategorien GrĂ¶ĂŸe und Form gearbeitet. Die Bedienschnittstelle wird nicht nur durch grĂ¶ĂŸere Bildschirme erweitert, sondern auch dadurch, dass Objekte wie Dekorleisten in die Interaktion einbezogen werden können. Andererseits heben aktuelle Technologieentwicklungen die Restriktion auf flache OberflĂ€chen auf, so dass Touchscreens kĂŒnftig ertastbare Strukturen aufweisen können. Diese Dissertation beschreibt die systematische Untersuchung großer und nicht-flacher interaktiver OberflĂ€chen und analysiert ihr Potential fĂŒr die Interaktion wĂ€hrend der Fahrt. Dazu wurden fĂŒr jede Charakteristik verschiedene Prototypen entwickelt und in Testumgebungen entsprechend ihres Reifegrads evaluiert. Auf diese Weise konnten subjektives Nutzerfeedback und objektive Daten erhoben, und die Effekte auf Fahr- und Blickverhalten sowie Nutzbarkeit untersucht werden. Diese Dissertation leistet den Beitrag einer Analyse der Entwicklung von interaktiven OberflĂ€chen im Automobilbereich. Weiterhin werden die Aspekte GrĂ¶ĂŸe und Form untersucht, um mit ihrer Hilfe die Interaktion im Vergleich zu herkömmlichen Touchscreens zu verbessern. Die durchgefĂŒhrten Studien belegen, dass große FlĂ€chen neue und verbesserte Bedienmöglichkeiten bieten können. Außerdem zeigt sich ein positiver Effekt auf die visuelle Ablenkung, wenn zusĂ€tzliches statisches, haptisches Feedback durch nicht-flache OberflĂ€chen bereitgestellt wird. Zusammenfassend zeigen verschiedene, untereinander kombinierbare Interaktionskonzepte das Potential interaktiver OberflĂ€chen fĂŒr den automotiven Einsatz. Zudem können die Ergebnisse auch in anderen Bereichen Anwendung finden, in denen visuelle Aufmerksamkeit fĂŒr andere Aufgaben benötigt wird
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