Fant 10010 publikasjoner. Viser side 307 av 401:
2023
Abstract This study introduces a community-focused eCoach recommendation system aimed at enhancing physical activity by leveraging demographic data, wearable sensor inputs, and machine learning algorithms to generate both individual and community-based activity recommendations using advice-based collaborative filtering. Existing eCoaching systems largely focus on personalized feedback without incorporating social reinforcement or group-level motivation, creating a gap in leveraging community influence for sustained health behaviors. Our system combines real-time activity tracking through wearable sensors and advice-based collaborative filtering to deliver adaptive recommendations. We collected data from 31 participants (16 using MOX2-5 sensors and 15 from a public Fitbit-based dataset), targeting daily activity levels to generate actionable guidance. Through decision tree classification and SHAP-based interpretability, we achieved a model accuracy of 99.8%, with F1, precision, recall, and MCC metrics confirming robustness across both balanced and imbalanced datasets. Ethical considerations, including privacy, bias mitigation, and informed consent, were integral to our design and implementation. Limitations include potential biases due to sample size and data imbalances, suggesting the need for future validation on independent datasets. This system demonstrates the potential to integrate with real-world healthcare initiatives, offering trust, transparency, and user engagement opportunities to meet public health objectives.
2025
2016
Design of multi-luminescent silica-based nanoparticles for the detection of liquid organic compounds
Tracer testing in reservoir formations is utilised to determine residual oil saturation as part of optimum hydrocarbon production. Here, we present a novel detection method of liquid organic compounds by monodisperse SiO2 nanoparticles (NPs) containing two luminophores, a EuIII:EDTA complex and a newly synthesised fluorophore based on the organic boron-dipyrromethene (BODIPY)-moiety. The particles exhibited stable EuIII PL emission intensity with a long lifetime in aqueous dispersion. The fluorescence of the BODIPY was also preserved in the aqueous environment. The ratiometric PL detection technique was demonstrated by using toluene and 1-octanol as model compounds of crude oil. The optimal synthesis conditions were found to give NPs with a diameter of ~100 nm, which is suitable for transport through porous oil reservoir structures. The cytotoxicity of the NPs was confirmed to be very low for human lung cell and fish cell lines. These findings demonstrate the potential of the NPs to replace the hazardous chemicals used to estimate the residual oil saturation. Moreover, the ratiometric PL detection technique is anticipated to be of benefit in other fields, such as biotechnology, medical diagnostics, and environmental monitoring, where a reliable and safe detection of a liquid organic phase is needed.
2024
2009
Beskrivelse av en målekampanje for utvikling og validering av en utslippsmodell for trafikkforurensning av PM10 ikke relatert til eksos.
2010
2010
2010
2004
Deriving glacier flow of Comfortlessbreen, Svalbard, with 2-pass differential SAR interferometry. NILU F
2010
2010
Deposition of sulfur and nitrogen in Norway 2017-2021
Norwegian Meteorological Institute
2023
Deposition of major inorganic compounds in Norway 2012-2016. NILU report
Avsetning av svovel og nitrogenforbindelser i Norge for perioden 2012 til 2016 er beregnet ved bruk av to forskjellige metoder, en observasjonsbasert metode, mens den andre kombinerer atmosfærisk transportmodell med observasjoner. Begge metodene viser en tydelig gradient med høyest avsetning i sør og sørvest. Den kombinerte metoden har bedre romlig informasjon, spesielt for våtavsetning. For tørravsetning er det ganske store usikkerheter i estimerte verdier for begge metodene. Sammenlignet med forrige periode 2007-2011 er det en nedgang i total svovelavsetning i Norge på 9%. For totalt nitrogen er det små endringer. Sammenlignet med 1978-1982 er det henholdsvis 75% og 20% reduksjon i svovel- og nitrogenavsetningen.
2017
Deposition of major inorganic compounds in Norway 2007-2011. NILU OR
Avsetning av svovel og nitrogenforbindelser i Norge i perioden 2007-2011 er beregnet på basis av målinger av luft- og nedbørkjemi samt nedbørmengder. Avsetning av ikke-marine basekationer er også beregnet. Resultatene er sammenlignet med tidligere estimater for 2002-2006.
2012
Deposition of major inorganic compounds in Norway 1978-1982 and 1997-2001: status and trends. NILU OR
2002
Although aerosols in the Arctic have multiple and complex impacts on the regional climate, their removal due to deposition is still not well quantified. We combined meteorological, aerosol, precipitation, and snowpack observations with simulations to derive information about the deposition of sea salt components and black carbon (BC) from November 2011 to April 2012 to the Arctic snowpack at two locations close to Ny-Ålesund, Svalbard. The dominating role of sea salt and the contribution of dust for the composition of atmospheric aerosols were reflected in the seasonal composition of the snowpack. The strong alignment of the concentrations of the major sea salt components in the aerosols, the precipitation, and the snowpack is linked to the importance of wet deposition for transfer from the atmosphere to the snowpack. This agreement was less strong for monthly snow budgets and deposition, indicating important relocation of the impurities inside the snowpack after deposition. Wet deposition was less important for the transfer of nitrate, non-sea-salt sulfate, and BC to the snow during the winter period. The average BC concentration in the snowpack remains small, with a limited impact on snow albedo and melting. Nevertheless, the observations also indicate an important redistribution of BC in the snowpack, leading to layers with enhanced concentrations. The complex behavior of bromide due to modifications during sea salt aerosol formation and remobilization in the atmosphere and in the snow were not resolved because of the lack of bromide measurements in aerosols and precipitation.
2019
2006
Deposition of air pollutants around the North Sea and the North-East Atlantic in 2014. OSPAR monitoring and assessment, 680/2016
2016