The Amsterdam Sensor Lab is part of the Amsterdam University of Applied Sciences (AUAS) and its goal is to develop application specific sensor systems for applied research. In order to (anonymously) measure, for instance, traffic without influencing people’s behaviour, a pressure sensing sub-tile is under development. It can be placed under a regular (0.3*0.3 m) tile in the pavement and, hence, cannot be seen by the public. Applications may range from evaluating the behaviour of pedestrians in crowds or on large open areas, to measuring the mechanical stress on bridges due to lorry traffic. The resulting data may be valuable to social scientists and municipal decision makers.A preliminary demonstration model has been realized that can detect: weight (pressure), direction, and a speed estimate of pedestrians and cyclists, by measuring the direction and velocity of pressure changes. Data communication is wireless, e.g., via Bluetooth™, to a Raspberry Pi™ or computer for calibration and visualization of the data. The demonstration model has been working satisfactorily for about half a year in the corridors of the AUAS.Pressure changes are measured with strain gauges using low-noise analogue instrumentation amplifiers and digitized with a 16 bit effective resolution. Current consumption is about 50 mA, the minimal detectable pressure is ca. 10 N and the maximal pressure ca. 1500 N. The data is refreshed every 2 ms.New electronics for a second version of the sub-tile (under development) make it possible to detect the tiny signal of a 0.3 gram rubber object falling from a 10 cm height. Investigations and development are going on to increase the measurement range from this low-level (impulse) pressure up to a pressure of about 500 kN, and configuring multiple sub-tiles to a wireless sensor network, thus paving the way to a (smart) sensing pavement. Apart from that, possibilities to give an estimate of the kind of traffic using artificial intelligence will be investigated.
DOCUMENT
Contribution to conference magazine https://husite.nl/ssc2017/ Conference ‘Smart Sustainable Cities 2017 – Viable Solutions’ The conference ‘Smart Sustainable Cities 2017 – Viable Solutions’ was held on 14 June 2017 in Utrecht, the Netherlands. Over 250 participants from all over Europe attended the conference.
DOCUMENT
This study evaluates the maximum theoretical exposure to radiofrequency (RF) electromag- netic fields (EMFs) from a Fifth-generation (5G) New Radio (NR) base station (BS) while using four commonly used mobile applications: YouTube for video streaming, WhatsApp for voice calls, Instagram for posting pictures and videos, and running a Video game. Three factors that might affect exposure, i.e., distance of the measurement positions from the BS, measurement time, and induced traffic, were examined. Exposure was assessed through both instantaneous and time-averaged extrapolated field strengths using the Maximum Power Extrapolation (MPE) method. The former was calculated for every measured SS-RSRP (Secondary Synchronization Reference Signal Received Power) power sample obtained with a sampling resolution of 1 second, whereas the latter was obtained using a 1-min moving average applied on the applications’ instantaneous extrapolated field strengths datasets. Regarding distance, two measurement positions (MPs) were selected: MP1 at 56 meters and MP2 at 170 meters. Next, considering the measurement time, all mobile application tests were initially set to run for 30 minutes at both MPs, whereas the video streaming test (YouTube) was run for an additional 150 minutes to investigate the temporal evolution of field strengths. Considering the traffic, throughput data vs. both instantaneous and time-averaged extrapolated field strengths were observed for all four mobile applications. In addition, at MP1, a 30-minute test without a User Equipment (UE) device was conducted to analyze exposure levels in the absence of induced traffic. The findings indicated that the estimated field strengths for mobile applications varied. It was observed that distance and time had a more significant impact than the volume of data traffic generated (throughput). Notably, the exposure levels in all tests were considerably lower than the public exposure thresholds set by the ICNIRP guidelines.INDEX TERMS 5G NR, C-band, human exposure assessment, mobile applications, traffic data, maximum extrapolation method, RF-EMF.
MULTIFILE
From the list of content: " Smart sustainable cities & higher education, Essence: what, why & how? Developing learning materials together; The blended learning environment; Teaching on entrepreneurship; Utrecht municipality as a client; International results; Studentexperiences; International relations; City projects in Turku, Alcoy and Utrecht ".
DOCUMENT
De noordelijke samenlevingen van zowel Nederland als Duitsland willen graag hun mobiliteit vergroenen. In dit kader is er een wens naar elektrische mobiliteit. Op het gebied van elektrische mobiliteit vinden momenteel zeer veel ontwikkelingen plaats. Niet alleen op het gebied van voertuig en de laadinfrastructuur maar ook breder. De voertuigen worden steeds slimmer (smart vehicle) en gaan steeds meer deel uitmaken van een slim energie netwerk (smart grid) en een slim verkeerssysteem (smart traffic). In dit complexe speelveld is het lastig om vast te stellen welke activiteiten ondernomen moeten worden om vergroeningsstappen op het gebied van elektrische mobiliteit te zetten. Dit onderzoek zal zich richten op identificatie van de nieuwe mogelijkheden (technische innovaties en nieuwe toepassingen) op het gebied van elektrische mobiliteit.
DOCUMENT
De openbare ruimte staat vol borden waarmee (vooral) de overheid ons gedrag wil sturen. Die borden vertellen ongewild ook een verhaal over de mensen, de organisatie, het beleid erachter. Dat gaat soms goed, soms minder goed.
LINK
In ESSENCE (European Sustainable Solutions for Existing and New City Environments) "five European Higher Education Institutions and three municipalities worked together to train future professionals to overcome the complex challenges of achieving smart sustainable cities. Students worked on behalf of the three local governments on useful solutions to sustainability issues in the urban environment. New teaching methods were applied, such as blended learning and creative solution searching methods. "
DOCUMENT
Smart speakers are heralded to make everyday life more convenient in households around the world. These voice-activated devices have become part of intimate domestic contexts in which users interact with platforms.This chapter presents a dualstudy investigating the privacy perceptions of smart speaker users and non-users. Data collected in in-depth interviews and focus groups with Dutch users and non-users show that they make sense of privacy risks through imagined sociotechnical affordances. Imagined affordances emerge with the interplay between user expectations, technologies, and designer intentions. Affordances like controllability, assistance, conversation, linkability, recordability, and locatability are associated with privacy considerations. Viewing this observation in the light of privacy calculus theory, we provide insights into how users’ positive experiences of the control over and assistance in the home offered by smart speakers outweighs privacy concerns. On the contrary, non-users reject the devices because of fears that recordability and locatability would breach the privacy of their homes by tapping data to platform companies. Our findings emphasize the dynamic nature of privacy calculus considerations and how these interact with imagined affordances; establishing a contrast between rational and emotional responses relating to smart speaker use.Emotions play a pivotal role in adoption considerations whereby respondents balance fears of unknown malicious actors against trust in platform companies.This study paves the way for further research that examines how surveillance in the home is becoming increasingly normalized by smart technologies.
DOCUMENT
The surge of smart city technology, thinking, publications and consultancy offerings is significant. This implies there is something seriously developing. But to what extent is this a new development? In this paper the case will be made that urban design has always had to include new technologies and the smart city movement is just another wave of technology that demands inclusion in urban design practice. Nevertheless, city designers and policy makers should make use of the new possibilities on offering. Interactive urban environments could support healthy living, while smart and responsive regulators could minimize our energy use, and anticipative traffic management could help minimising congestion. Further to this, crowd-sensing could smoothen urban mobility and new forms of 3d-printing may re-use and reduce waste. The core of all new technological potential however is still to service people and to make life for urban citizens better. How could people in search for a convenient life be better serviced? Many of them want to have a nice house, a clean, safe and healthy environment, access to resources such as clean water, renewable energy and healthy food, a resilient place that is not vulnerable for all kinds of climate impacts and possibly some room for contemplation. With Maslow’s ladder in mind, achieving this not only depends on the availability and use of technology, rather a well-designed and integrated urban plan is asked for. Meeting the needs of contemporary urban citizens must be served by what urban design is supposed to deliver, only now with current available technologies in the back pocket. The paper emphasises how to design the convenient city by making use of the available technology, but it also takes a stand on the relativity of the current hype of smart cities.
DOCUMENT
The objective of the ITRACT2 project is to create attractive transport options for regions with low population densities including rural areas. A basic assumption of the ITRACT project is that information and communication technology can be used to build IT services that allow for more adaptive transport services and that these adaptive transport services create a better match between supply (transport schedules) and demand (traveller needs) and therefore a more viable business case.
DOCUMENT
