Search results for "Sensor"
showing 10 items of 4594 documents
Energy balance in single exposure multispectral sensors
2013
International audience; Recent simulations of multispectral sensors are based on a simple Gaussian model, which includes filters transmittance and substrate absorption. In this paper we want to make the distinction between these two layers. We discuss the balance of energy by channel in multispectral solid state sensors and propose an updated simple Gaussian model to simulate multispectral sensors. Results are based on simulation of typical sensor configurations.
Green and Integrated Wearable Electrochemical Sensor for Chloride Detection in Sweat
2022
Wearable sensors for sweat biomarkers can provide facile analyte capability and monitoring for several diseases. In this work, a green wearable sensor for sweat absorption and chloride sensing is presented. In order to produce a sustainable device, polylactic acid (PLA) was used for both the substrate and the sweat absorption pad fabrication. The sensor material for chloride detection consisted of silver-based reference, working, and counter electrodes obtained from upcycled compact discs. The PLA substrates were prepared by thermal bonding of PLA sheets obtained via a flat die extruder, prototyped in single functional layers via CO2 laser cutting, and bonded via hot-press. The effect of co…
Perception of illusory surfaces and contours in goldfish
2007
Goldfish(Carassius auratus)were trained to discriminate triangles and squares using a two choice procedure. In the first experiment, three goldfish were trained with food reward on a black outline triangle on a white background, while a black outline square was shown for comparison. In transfer tests, a Kanizsa triangle and a Kanizsa square were presented, perceived by humans as an illusory triangle- or square-shaped surface of slightly higher brightness than the background. The choice behavior in this situation indicates that goldfish are able to discriminate between both figures in almost the same way as in the training situation. In control experiments goldfish did not discriminate betwe…
The Cryogenic AntiCoincidence detector for ATHENA: the progress towards the final pixel design
2014
“The Hot and Energetic Universe” is the scientific theme approved by the ESA SPC for a Large mission to be flown in the next ESA slot (2028th) timeframe. ATHENA is a space mission proposal tailored on this scientific theme. It will be the first X-ray mission able to perform the so-called “Integral field spectroscopy”, by coupling a high-resolution spectrometer, the X-ray Integral Field Unit (X-IFU), to a high performance optics so providing detailed images of its field of view (5’ in diameter) with an angular resolution of 5” and fine energy-spectra (2.5eV@E<7keV). The X-IFU is a kilo-pixel array based on TES (Transition Edge Sensor) microcalorimeters providing high resolution spectroscopy …
Experimente zur Entwicklung eines implantierbaren und dauernd funktionsfähigen Glukose-Sensors auf Basis der Polarimetrie - Experiments Aimed at Enab…
1995
In vitro and in vivo experiments devised with the aim of developing a permanently implantable glucose sensor based on polarimetry are described. It was found that in ultrafiltrated human blood plasma the overall optical rotation was 94% specific for glucose, and that polarisation photometry yielded a sufficiently sensitive signal for in vivo glucose detection. The three types of capillary membrane intended for implantation that we tested, revealed an in vitro response time to glucose concentration of 10 minutes; when implanted, they maintain this over a period of weeks, during which time the same glucose concentrations can be measured daily in ultrafiltrated capillary fluid as in the blood …
Monitoring wireless sensor networks through logical deductive processes
2006
This paper proposes a distributed multi-agent architecture for wireless sensor networks management, which exploits the dynamic reasoning capabilities of the Situation Calculus in order to emulate the reactive behavior of a human expert to fault situations. The information related to network events is generated by tunable agents installed on the network nodes and is collected by a logical entity for network managing where it is merged with general domain knowledge, with the aim of identifying the root causes of faults, and deciding on reparative actions. The logical inference system has being devised to carry out automated isolation, diagnosis, and, whenever possible, repair of network anoma…
Rotaļa 2-3 gadu vecu bērnu sensorās attīstības sekmēšanai
2019
Bakalaura darba autors Santa Ivanova, darba nosaukums Rotaļa 2 - gadus vecu bērnu sensorās prasmes attīstības sekmēšanai. Bērnu sensorā attīstība spēlē būtisku lomu saistīto bērna kompetenču attīstīšanā – attīsta fizikālās spējas (mazā motorika), kognitīvo attīstību, sajūta par sevis esamību, sociālās, komunikācijas un valodas prasmes. Minēto iemeslu dēļ bērniem ir vajadzīgs nodrošināt iespēju attīstīt viņu maņas. Dodot iespēju spēlēties ar dažādiem materiāliem, tekstūrām vai veicot dažādas darbības. Konkrētu spēļu veidu realizācija pirmsskolas izglītības iestādēs kā obligāts pasākums veicinātu bērnu attīstību un tajā pašā laikā, skolotāju izglītošanu par šo sensorās attīstības nozīmi. Nepā…
Dabas materiālu izmantošana sensorās attīstības veicināšanai 2-3 gadus veciem bērniem pirmsskolas izglītības iestādē
2021
Bakalaura darba nosaukums – Dabas materiālu izmantošana sensorās attīstības veicināšanai 2-3 gadus veciem bērniem pirmsskolas izglītības iestādē. Darba autore – Zanda Priedīte Darba mērķis - teorētiski izzināt un pētīt sensorās attīstīšanas iespējas, izmantojot dabas materiālus. Hipotēze - 2-3 gadus vecu bērnu sensoro spēju attīstība noritēs sekmīgāk, ja pedagogs plānos un piedāvās pedagoga organizētajās rotaļdarbībās, spēlēs, dabā un brīvā rotaļdarbībā daudzveidīgus dabas materiālus. Darbs sastāv no divām daļām – teorētiskā un empīriskā pētījuma. Teorētiskajā daļā tika analizētas un apkopotas autoru atziņas par sensoro attīstību, sajūtu raksturojumu, 2-3 gadu vecu bērnu attīstības īpatnībā…
Wearable PPG Sensor Matrix for Cardiovascular Assessment
2014
Wearable biomonitoring systems and smart textiles for healthcare are gaining more importance and significance in the R&D sphere due to their potentials in healthcare and sports. Such biomonitoring systems offer a number of advantages in comparison to the conventional equipment proving mobility of the wearer during a long-term monitoring of vital parameters. There are different options to set up the physiological monitoring using wireless and wearable technologies. One of the scenarios is addressing textiles as a carrier of electronics. Moreover, those differ by their functional applications, registered physiological parameters and technology solutions. Still, the most demanded biomonitoring…
Novel approach to study the perception of animacy in dogs.
2017
Humans tend to perceive inanimate objects as animate based on simple motion cues. So far this perceptual bias has been studied mostly in humans by utilizing two-dimensional video and interactive displays. Considering its importance for survival, the perception of animacy is probably also widespread among animals, however two-dimensional displays are not necessarily the best approach to study the phenomenon in non-human species. Here we applied a novel method to study whether dogs recognize a dependent (chasing-like) movement pattern performed by inanimate agents in live demonstration. We found that dogs showed more interest toward the agents that demonstrated the chasing-like motion, compar…