Doplor Sleep: Monitoring Hospital Soundscapes for Better Sleep Hygiene

Good sleep is conducive to the recovery process of hospital patients - and yet, in many wards, sleep duration and quality can often be suboptimal, in part due to modifiable hospital-related sounds and noises. At the neurological ward of the Reinier de Graaf hospital in Delft, the Netherlands, we developed and evaluated a prototype information...

Motion-based MAV Detection in GPS-denied Environments

Drones need to be able to detect and localize each other if they are to collaborate in multi-robot teams or swarms. Typically, computer vision methods based on visual appearance are investigated to this end. In contrast, in this work, a method based on dense optical flow (OF) is developed that detects dynamic objects. This is achieved by...

Motion-based mav detection in gps-denied environments

Drones need to detect and localize each other if they are to collaborate in multi-robot teams or swarms. In this paper, a method based on dense optical flow (OF) is developed that detects dynamic objects. This is achieved by comparing the flow vectors with the direction to the Focus of Expansion (FoE) in the image plane. A simulation in AirSim...

Detecting Emerging Challenges in Social Sidewalk Navigation

When mobile urban robots will share the sidewalk with people, the resulting interactions can cause unexpected undesirable outcomes to emerge – from people running away scared to people deliberately teasing and harassing such systems. How can we design such AI systems to aptly handle the unexpected? Directly anticipating and/or detecting these...

Expressive/Sensitive: Full day workshop at DIS 2020

Our interactions form an intricate 'dance' - a dance requiring a fluent integration of both expressivity (e.g. to approach someone) and sensitivity (e.g. detect if you 'should' approach someone). Work on behaving artefacts has focused mostly on the social, emotional and aesthetic qualities that can be evoked - expressed - through interactions...

Interdigitated back-contacted structure: A different approach towards high-efficiency ultrathin copper indium gallium (di)selenide solar cells

An interdigitated back-contacted (IBC) configuration is proposed for submicron copper indium gallium (di)selenide (CIGS). In a modelling platform, the structure was opto-electrically optimized for maximum efficiency. The results are compared with a reference front/back-contacted (FBC) solar cell with similar absorber thickness and exhibiting...

Detecting Perceived Appropriateness of a Robot’s Social Positioning Behavior from Non-Verbal Cues: ‘A robot study in scarlet’

What if a robot could detect when you think it got too close to you during its approach? This would allow it to correct or compensate for its social ‘mistake’. It would also allow for a responsive approach, where that robot would reactively find suitable approach behavior through and during the interaction. We investigated if it is possible to...

Advanced light management techniques for two-terminal hybrid tandem solar cells

Multi-junction solar cells are considered for various applications, as they tackle various loss mechanisms for single junction solar cells. These losses include thermalization and non-absorption below the band gap. In this work, a tandem configuration comprising copper-indium-gallium-di-selenide (CIGS) and hydrogenated amorphous silicon (a-Si...

An optical study of back contacted CIGS solar cells

An optical investigation of ultra-thin CIGS solar cells and guidelines for elimination of optical losses is presented. Then, a novel back contacted structure for CIGS solar cells is suggested and optimized for best implied photocurrent density.

Quenching Mo optical losses in CIGS solar cells by a point contacted dual-layer dielectric spacer: A 3-D optical study

A 3-D optical modelling was calibrated to calculate the light absorption and the total reflection of fabricated CIGS solar cells. Absorption losses at molybdenum (Mo) / CIGS interface were explained in terms of plasmonic waves. To quench these losses, we assumed the insertion of a lossless dielectric spacer between Mo and CIGS, whose optical...

Finite element eye model with retinal detachment, investigating head and eye movements as progression factors

Rhegmatogenous retinal detachment (RD) is a sight threatening condition. In this type of RD a break in the retina allows liquefied vitreous to enter the subretinal space and the retina to detach. The prognosis concerning the patients' visual ability is better if the RD has not progressed to the macula. The patient is given a posturing advice of...

Workshop L: De herontdekking van de serviceflats en andere vergezichten

Workshopinleiding ihkv Conferentie Scheiden van wonen en zorg (workshop L).

Silicification as the result of incongruent rock dissolution

Veilig Getij, beheer en gebruik Stormvloedkering Oosterschelde: Ervaring en bijstelling

De rapportage van het project Evaluatie Oosterschelde bestaat uit de evaluatienota 'de evaluatie van de Oosterschelde na 5 jaar stormvloedkering' (AX91.089) en twee onderbouwende nota's: 'Beheer stormvloedkering Oosterschelde: ervaring en bijstelling' en 'De effecten van de waterbouwkundige werken op het getijdemilieu van de Oosterschelde'(AX91...

Riviercrossings

Een rivier bestaat uit bochten, overgangsvakken en tegenbochten. In vergelijking tot een bocht is de bodemligging t.p.v. een overgangsvak meer gelijkmatig verdeeld over de breedte van de rivier, zodat bij lage afvoer de waterstand daar ter plaatse maatgevend zal zijn voor de scheepvaart. Om inzicht te krijgen in de bevaarbaarheid van een rivier...