Search results for " sensor"

Simultaneous Noise and Impedance Fitting to Transition-Edge Sensor Data Using Differential Evolution

2020

We discuss a robust method to simultaneously fit a complex multi-body model both to the complex impedance and the noise data for transition-edge sensors. It is based on a differential evolution (DE) algorithm, providing accurate and repeatable results with only a small increase in computational cost compared to the Levenberg–Marquardt (LM) algorithm. Test fits are made using both DE and LM methods, and the results compared with previously determined best fits, with varying initial value deviations and limit ranges for the parameters. The robustness of DE is demonstrated with successful fits even when parameter limits up to a factor of 10 from the known values were used. It is shown that the…

E se fosse un gioco? Un antropologo in spiaggia e i sensi dell’altrove

2014

La fixité thématique du discours du vin en français et en allemand : analyses et proposition d’un modèle quadri-dimensionnel

2020

International audience; La présente contribution vise à souligner la fixité thématique dans les descriptions de vin en français et en allemand, réunies dans un corpus multimodal bilingue [3]. Il s'agira de mettre en évidence les quatre composantes sémantiques de ces descriptions [4], qui sont stabilisées pour les genres textuels associés à la vente du vin, mais qui subissent des variations en termes de proportions lorsque le genre textuel se spécifie. Ces continuités thématiques s'inscrivent en effet dans une progression textuelle marquée par d'incessants aller-retour avec la trame discursive de l'énoncé, et c'est précisément à l'interface texte-discours que s'actualisent (entre autres), da…

Poids culturel du discours numérique de la bière en allemand Pour une approche par la sémantique discursive

2019

International audience; La présente contribution vise à développer la méthodologie de la sémantique discursive en convoquant la sémantique des cadres pour l’analyse du discours sensoriel. Seront, dans un premier temps, discutés les deux notions de discours et de sensoriel pour partir d’une définition stabilisée et opérationnalisable. Les cadres sémantiques sont ensuite employés pour l’analyse d’un corpus numérique original en langue allemande de publications d’Instagram générées à partir de hashtags portant sur la bière. Il sera alors démontré en quoi la culture influence la construction du sens du texte de la publication.

Integration of large-area optical imagers for biometric recognition and touch in displays

2021

In recent years there has been an increasing interest to integrate optical sensing in mobile displays, for instance, for biometric fingerprint scanning functionality. There are several routes to incorporate optical fingerprint functionality within the full display area, each with their own benefits and challenges. Here we investigate the different integration routes using large-area, ultra-thin imagers based on organic photodiodes.

Decentralized Deployment of Mobile Sensors for Optimal Connected Sensing Coverage

2008

In this paper, we address the optimal connected sensing coverage problem, i.e., how mobile sensors with limited sensing capabilities can cooperatively adjust their locations so as to maximize the extension of the covered area while avoiding any internal “holes”, areas that are not covered by any sensor. Our solution consists in a distributed motion algorithm that is based on an original extension of the Voronoi tessellation.

Effects of Tray-Drying on the Physicochemical, Microbiological, Proximate, and Sensory Properties of White- and Red-Fleshed Loquat (Eriobotrya Japoni…

2022

Loquat fruits, highly valued by consumers for their characteristic aroma and pleasant taste, have a short post-harvest life and are susceptible to mechanical damage, loss of firmness, and initial organoleptic characteristics. The aim of this work was to develop a drying method suitable for storing loquat fruits in polyamide/polyethylene (PA/PE) bags containing two gaseous mixtures (treatments): MAPN2 (100% N2) and MAPP (21% O2 and 0.04% CO2), at room temperature (20 ± 1 °C) for at least 2 months. The effects of these conditions on the physico-chemical, microbiological, proximate, and sensory properties of fruit stored over a 50-day time interval were studied. The results showed that convect…

Reti sismiche urbane per monitoraggio sismico monitoraggio strutturale ed allerta precoce

2021

In questa tesi, viene effettuato un analisi preliminare in cui si mette in evidenza come l'italia sia un paese a rischio sismico, poichè possiede molti centri storici con strutture non progettate per eventi sismici di media entità. Si è prestato molta attenzione su quante vite umane vengono salvate dopo un terremoto catastrofico. L'analisi fa emergere come, è importante essere tempestivi nell'estrarre le persone rimaste sotto le macerie, poichè la percentuale di persone estratte vive si mantiene alta solo entro le 48 ore dall'evento. Dopo 96 ore questa percentule si attesta a 0. In eventi passati spesso i soccorsi sono arrivati con giorni di ritardo nelle zone più devastate. L'obbiettivo ch…

Imaging photoplethysmography for evaluation of cutaneous sensory nerve fiber function

2020

Peripheral neuropathy refers to peripheral nervous system dysfunction which affects up to 2% of the world's population. This condition is caused by damage to the small nerve fibers, hence its assessment is still challenging due to the lack of simple, non-invasive and objective diagnostic techniques. The present study aimed to develop and evaluate a simple, objective and non-invasive technique for assessment of small cutaneous sensory nerve fiber function. Our approach is based on utilization of imaging photoplethysmography and local skin heating. The effectiveness of the method was evaluated on young, healthy volunteers (n = 14) after 10 minutes of 45-degree local skin heating, while record…

Application of Electronic Nose for Evaluation of Wastewater Treatment Process Effects at Full-Scale WWTP

2019

This paper presents the results of studies aiming at the assessment and classification of wastewater using an electronic nose. During the experiment, an attempt was made to classify the medium based on an analysis of signals from a gas sensor array, the intensity of which depended on the levels of volatile compounds in the headspace gas mixture above the wastewater table. The research involved samples collected from the mechanical and biological treatment devices of a full-scale wastewater treatment plant (WWTP), as well as wastewater analysis. The measurements were carried out with a metal-oxide-semiconductor (MOS) gas sensor array, when coupled with a computing unit (e.g., a computer with…