Voor u ligt het booklet Sensing Streetscapes: perspectieven op verdichting. Het bundelt de interviews van elf ontwerpbureaus, drie gemeentelijke senior stedenbouwers, de voormalige rijksadviseur, vijf mondiale academische pioniers van de neuro-architectuur en een verkenning naar negen bijzondere Chinese woningbouwprojecten.Deze uitgave is onderdeel van het tweejarig onderzoeksproject Sensing Streetscapes. Hierin werken onderzoekers van de HvA samen met de praktijk en internationale onderzoeksgroepen aan het ontleden van het begrip menselijke maat voor het ruimtelijk ontwerp. De conceptversie van het booklet werd op het eindseminar-excursie van 28 mei 2021 gepresenteerd. Aan de publicatie zijn de inzichten uit het eindsymposium en excursie toegevoegd, alsmede een top-10 lijst van lessen voor het verdichten met een menselijke maat op ooghoogte.
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Moses - Mobile Sensing for Safety voor veliger een efficientere opereren brandweerlieden
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This paper introduces the design principle of legibility as means to examine the epistemic and ethical conditions of sensing technologies. Emerging sensing technologies create new possibilities regarding what to measure, as well as how to analyze, interpret, and communicate said measurements. In doing so, they create ethical challenges for designers to navigate, specifically how the interpretation and communication of complex data affect moral values such as (user) autonomy. Contemporary sensing technologies require layers of mediation and exposition to render what they sense as intelligible and constructive to the end user, which is a value-laden design act. Legibility is positioned as both an evaluative lens and a design criterion, making it complimentary to existing frameworks such as value sensitive design. To concretize the notion of legibility, and understand how it could be utilized in both evaluative and anticipatory contexts, the case study of a vest embedded with sensors and an accompanying app for patients with chronic obstructive pulmonary disease is analyzed.
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Publicatie ter gelegenheid van het afscheid/pensioen van Henk van Leeuwen, docent Informatica en lector Ambient Intelligence bij het Saxion Kenniscentrum Design en Technologie. In deze uitgave kijkt Henk van Leeuwen, na een loopbaan van 40 jaar in het onderwijs, niet alleen terug op interessante zaken uit het verleden, maar onderkent hij ook welke drijvende krachten invloed hadden. Hierbij heeft Van Leeuwen niet gestreefd naar volledigheid. Het is een persoonlijke kijk, die berust op eigen ervaringen en die tot discussie kan prikkelen. Naast de vakinhoudelijke observaties neemt Van Leeuwen ook het hbo-informaticaonderwijs en het ICT-onderzoek onder de loep. Het begrip ‘sensing’ in de titel ’Sense and nonsense of sensing’ van deze uitgave heeft dan ook niet primair een technische betekenis. Sensing is in dit verband een manier van observeren, van snuffelen. In het ‘Informaticavak’ gebruiken we daar tal van sensoren voor. Over sensoren gaat het zeker, maar nog meer over zijn persoonlijk observeren, interpreteren van wat hij heeft opgemerkt en zijn reflectie daarop. Dat leidt tot uitspraken over zin en onzin, sense en nonsense, van wat Van Leeuwen waarneemt, nu en in het verleden. Van Leeuwen neemt de lezer mee in de ontwikkelingen van informatica zoals hij die heeft gezien en breng daarvan verslag uit. Daarbij stelt hij de vraag of we uit de lijnen die we zien in het verleden, ontwikkelingen voor de toekomst kunnen afleiden.
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We report on the calibration and testing of a fiber Bragg grating (FBG)-based 2D-shape sensing strip for real-time monitoring of the position and orientation of the human spine during gait. The strip is evaluated for its use as an input for control of an exoskeleton for patients with spinal cord injury. By measuring the torsion and bending of the back, walking movements can be reconstructed. The 3D-printed strip has nine embedded fiber Bragg gratings that are located at specific places with respect to the vertebral column. Three FBGs are placed opposite to the thoracic vertebrae T6–T9, these FBGs are sensitive for measuring the bending of the spine during the gait cycle. Torsion is measured at two locations: at thoracic vertebra, T3 and at lumbar vertebra, L3. At these locations, the width of the strip is reduced to have a larger sensitivity for torsion. The strain at each FBG is measured using an interrogator. This leads to the radius of curvature and torsion as a function of time. The Frenet-Serret formulae are used to calculate the shape of the strip during the gait cycle. We have calibrated this FBG strip for curvature by bending it at known radius of different curvatures. We found a linear dependence between the strain and curvature. For torsion calibration we have rotated the strip with a stepper motor at different angles and monitored the strain. We, again, found a linear dependence with a small hysteresis. We mounted the strip on a healthy test subject and monitored their gait cycle. The FBG strip shows similar results when compared to a motion capture system based on multiple cameras. Although the fixation of the strip to a garment or on the back directly strongly influences the measured response, it does show a periodic and reproducible signal during the gait cycle.
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In order to guarantee structural integrity of marine structures in an effective way, operators of these structures seek an affordable, simple and robust system for monitoring detected cracks. Such systems are not yet available and the authors took a challenge to research a possibility of developing such a system. The paper describes the initial research steps made. In the first place, this includes reviewing conventional and recent methods for sensing and monitoring fatigue cracks and discussing their applicability for marine structures. A special attention is given to the promising but still developing new sensing techniques. In the second place, wireless network systems are reviewed because they form an attractive component of the desired system. The authors conclude that it is feasible to develop the monitoring system for detected cracks in marine structures and elaborate on implications of availability of such a system on risk based inspections and structural health monitoring systems
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From the article: "A facile approach for the fabrication of large-scale interdigitated nanogap electrodes (nanogap IDEs) with a controllable gap was demonstrated with conventional micro-fabrication technology to develop chemocapacitors for gas sensing applications. In this work, interdigitated nanogap electrodes (nanogap IDEs) with gaps from 50–250 nm have been designed and processed at full wafer-scale. These nanogap IDEs were then coated with poly(4-vinyl phenol) as a sensitive layer to form gas sensors for acetone detection at low concentrations. These acetone sensors showed excellent sensing performance with a dynamic range from 1000 ppm to 10 ppm of acetone at room temperature and the observed results are compared with conventional interdigitated microelectrodes according to our previous work. Sensitivity and reproducibility of devices are discussed in detail. Our approach of fabrication of nanogap IDEs together with a simple coating method to apply the sensing layer opens up possibilities to create various nanogap devices in a cost-effective manner for gas sensing applications"
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Amsterdam faces the challenge of accommodating 50,000 to 90,000 new homes in the next five to ten years. That is equivalent to 10% of the city’s current total housing stock. The new homes have to be built within the existing urban fabric. This will entail high densities and the construction of new ‘un-Dutch’ typologies with high-rise residential buildings. Densification is currently accelerating in many Western cities and high-rise living environments are gaining ground as today’s typology. Yet these new typologies come with potentially serious risks to the liveability of cities in general and those new environments in particular (Asgarzadeh et al. 2012; Lindal and Hartig 2013; Gifford 2007). Urban designers and (landscape) architects are challenged to prevent and soften the negative impact that is often associated with extremely densified environments. This entails mitigating contradictive demands: to create high-density capacity andshape streetscapes that relate to a human scale. Designers might resort to the large body of applied design solutions and theories, yet these tend to be derived from more traditional urban fabrics of low-density developments (for example: e.g. Sennett 2018; Haas 2008; Jacobs 1993; Banerjee and Southworth 1990; Alexander et.al. 1977; Jacobs 1961).Therefore, the question of the research project Sensing Streetscape is if the classical design solutions are without any alterations, applicable in these new high density settings and able to create streetscapes with a human scale. A combination of emerging technologies and principles from both worlds; neuroscience and architecture offer the opportunity to investigate this question in-depth as a relation between the designed and the visually perceived streetscape.
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The enhancement of GPS technology enables the use of GPS devices not only as navigation and orientation tools, but also as instruments used to capture travelled routes: as sensors that measure activity on a city scale or the regional scale. TU Delft developed a process and database architecture for collecting data on pedestrian movement in three European city centres, Norwich, Rouen and Koblenz, and in another experiment for collecting activity data of 13 families in Almere (The Netherlands) for one week. The question posed in this paper is: what is the value of GPS as ‘sensor technology’ measuring activities of people? The conclusion is that GPS offers a widely useable instrument to collect invaluable spatial-temporal data on different scales and in different settings adding new layers of knowledge to urban studies, but the use of GPS-technology and deployment of GPS-devices still offers significant challenges for future research.
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Voor het project Sensing Streetscapes sprak Hogeschool van Amsterdam-onderzoeker Frank Suurenbroek met Marlies de Nijs, senior stedenbouwkundige bij de gemeente Utrecht. Zij vertelt over de Utrechtse manier van stadmaken met hoogbouw achter de coulissen van levendige plinten.Voor het onderzoeksproject Sensing Streetscapes maakten Frank Suurenbroek en Gideon Spanjar een booklet waarin zij en andere experts het belang van de menselijke maat in de verdichte stad analyseren. Het interview met Marlies de Nijs is daarin ook opgenomen.
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