Search results for " sensor"
showing 10 items of 1714 documents
Fundamentals of Precision Agriculture
2023
Precision agriculture or precision farming is the targeted application of crop input according to the locally determined crop needs. Therefore, it is the geo-referenced application of crop inputs, whose rates should be those required by the crop. The most essential points of information about the topic being described are: overview; brief history of precision agriculture; theoretical basics of precision agriculture; precision agriculture cycle; geo-referenced measurement of within-field parameters; analysis and interpretation of geo-referenced data for mapping within-field parameters; spatially variable rate application of crop inputs; instruments for precision agriculture; current scenario…
Optisks čukstošās galerijas modu mikrorezonatora mitruma sensors
2020
Šajā bakalaura darbā tiek pētīti čukstošās galerijas modu (ČGM) mikrorezonatori un to pielietojums gaisa mitruma kontrolei un mērīšanai. ČGM rodas, kad gludas virsmas optiskajos dobumos notiek konstruktīva interference. Rezultātā rezonatorā paliek tikai noteikti viļņu garumi, kas atkarīgi no rezonatora izmēra un laušanas koeficienta. Līdz ar to, ja kāds no šiem parametriem gaisa mitruma izmaiņu dēļ mainās, rezonatoru var izmantot kā mitruma sensoru. Eksperimentam izvēlēts glicerīna piliens, kurā ČGM rezonanses ierosinātas ar skenējamu pusvadītāju lāzeru. Izveidota eksperimentāla iekārta, ar kuru var pētīt šāda veida mitruma sensoru. Rezultātā iegūta jutība vidēji 4,14 nm/% RH lāzera viļņa g…
Caracterización espacio frecuencial y funcional de los fenómenos de prevalencia ocular
2018
Determinar con exactitud la dominancia ocular es importante en aquellos casos en los que es necesario inducir monovisión. Esto sucede en determinadas técnicas de cirugía refractiva, intervenciones de cataratas y adaptaciones de lentes de contacto. Especialmente críticas son las intervenciones quirúrgicas donde el proceso es irreversible y las inadaptaciones a la situación creada, si la dominancia ocular ha sido incorrectamente determinada, pueden crear importantes problemas de astenopia visual de difícil solución debido a la reducida plasticidad del sistema visual de los sujetos, por lo general adultos. Poder disponer de un sistema que pueda proporcionar de forma sencilla y fiable toda la i…
Enhancing innovation capability and business opportunities : cases of SME-oriented applied research
2012
A novel device for assessing the health risk caused by hand-arm vibrations in olives harvesting
2012
The mechanization of olive harvesting is very important both to reduce the costs of production and to assure the oil quality because the manual harvest does not allow to operate at the right time and also need a long period to be completed. The use of portable shakers, that are spreading more than others typologies, can give a solution to the problem. However, the use of such equipment may involve risk of exposure to hand-transmitted vibration. The aim of this study was to assess the level of exposure to hand-arm vibration of the operators using portable shakers (reference standards UNI EN ISO 5349-1:2004, Italian Low Decree 81/2008). The research presented here concerns the definition of a…
Développement, optimisation et utilisation d'un simulateur de mastication "bouche artificielle"
2009
National audience
Design and Characterization of Effective Ag, Pt and AgPt Nanoparticles to H₂O₂ Electrosensing from Scrapped Printed Electrodes.
2019
The use of disposable screen-printed electrodes (SPEs) has extraordinarily grown in the last years. In this paper, conductive inks from scrapped SPEs were removed by acid leaching, providing high value feedstocks suitable for the electrochemical deposition of Ag, Pt and Ag core-Pt shell-like bimetallic (AgPt) nanoparticles, onto screen-printed carbon electrodes (ML@SPCEs, M = Ag, Pt or AgPt, L = metal nanoparticles from leaching solutions). ML@SPCEs were characterized by scanning electron microscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The results were compared to those obtained when metal nanoparticles were synthesised using standard solutions of metal salts (MS@…
Revisiting the cross‐sectional and prospective association of physical activity with body composition and physical fitness in preschoolers: A composi…
2022
Background Information is limited for the benefits of physical activity (PA) in preschoolers. Previous research using accelerometer-assessed PA may be affected for multicollinearity issues. Objectives This study investigated the cross-sectional and prospective associations of sedentary behaviour (SB) and PA with body composition and physical fitness using compositional data analysis. Methods Baseline PA and SB were collected in 4-year-old (n = 315) using wrist-worn GT3X+ during seven 24 h-periods. Body composition (air-displacement plethysmography) and physical fitness (PREFIT test battery) were assessed at baseline and at the 12-month follow-up. Results Increasing vigorous PA at expenses o…
Reflectance Measurement Method Based on Sensor Fusion of Frame-Based Hyperspectral Imager and Time-of-Flight Depth Camera
2022
Hyperspectral imaging and distance data have previously been used in aerial, forestry, agricultural, and medical imaging applications. Extracting meaningful information from a combination of different imaging modalities is difficult, as the image sensor fusion requires knowing the optical properties of the sensors, selecting the right optics and finding the sensors’ mutual reference frame through calibration. In this research we demonstrate a method for fusing data from Fabry–Perot interferometer hyperspectral camera and a Kinect V2 time-of-flight depth sensing camera. We created an experimental application to demonstrate utilizing the depth augmented hyperspectral data to measu…
Bezvadu saziņas kanālu izmaiņas laikā ārējo faktoru ietekmē
2018
Bakalaura darba “Bezvadu saziņas kanālu izmaiņas laikā ārējo faktoru ietekmē” mērķis ir izveidot risinājumu, ar kura palīdzību var attēlot bezvadu saziņas kanālu izmaiņas. Mērķa sasniegšanai autors ir izvirzījis vairākus uzdevumus. Sākumā tiek veikta literatūras izpēte par to kā tiek veikta bezvadu kanālu kartēšana, izmantojot bezvadu sensoru tīklu. Tālāk autors izstrādā eksperimentālo programmatūru priekš XM1000 sensoru mezgla, izmantojot MansOS operētājsistēmu. Autors darbā apraksta eksperimenta veikšanu, izmantojot Elektronikas un datorzinātņu institūta bezvadu sensoru tīkla testa gultni, un kā tiek veikta no bezvadu sensoru tīkla iegūto datu vizualizācija. Darbu autors noslēdz izdarot s…