Search results for "deviation"

showing 10 items of 367 documents

A Split-Window Algorithm for Estimating LST From Meteosat 9 Data: Test and Comparison With Data and MODIS LSTs

2009

The main purpose of this letter is to give an operational algorithm for retrieving the land surface temperature (LST) using the Spinning Enhanced Visible and Infrared Imager data onboard the Meteosat Second Generation (MSG2) satellite. The algorithm is a split-window method using the two thermal infrared channels IR10.8 and IR12.0. The MODTRAN 4.0 code was used to obtain numerical coefficients of the algorithm proposed. The results show that for viewing angles lower than 50deg the algorithm is capable of producing LST with a standard deviation of 0.7 K and a root-mean-square error (rmse) of 1.3 K. The algorithm has been applied to a series of MSG2 images obtained from an MSG antenna system …

In situMeteorologyLand surface temperatureMean squared errorMODTRANGeotechnical Engineering and Engineering GeologyStandard deviationEnvironmental scienceSatelliteElectrical and Electronic EngineeringSplit windowImage retrievalAlgorithmRemote sensingIEEE Geoscience and Remote Sensing Letters
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In vitro evaluation of poloxamer in situ forming gels for bedaquiline fumarate salt and pharmacokinetics following intramuscular injection in rats

2019

Graphical abstract

In situPO Propylene oxideIV IntravenousP338 Poloxamer 338lcsh:RS1-441Pharmaceutical Sciencechemistry.chemical_compoundn Sample sizeSD Standard deviationIM Intramuscularchemistry.chemical_classificationC0 Analyte plasma concentration at time zeroDoE Design of experimentsUV UltravioletPharmacology. TherapyK2.EDTA Potassium ethylenediaminetetraacetic acidLC–MS/MS Liquid chromatography-tandem mass spectrometryH&E Hematoxylin and eosintmax Sampling time to reach the maximum observed analyte plasma concentrationIn situ forming gelsCMC Critical micellar concentrationCmax Maximum observed analyte plasma concentrationIntramuscular injectionDN Dose normalizedGPT Gel point temperaturePLGA Poly-(DL-lactic-co-glycolic acid)TFA Trifluoroacetic acidCAN AcetonitrileATP Adenosine 5′ triphosphateSalt (chemistry)Polyethylene glycolPoloxamerArticlelcsh:Pharmacy and materia medicaPharmacokineticsIn vivoUHPLC Ultra-high performance liquid chromatographyPharmacokineticsAUClast Area under the analyte concentration versus time curve from time zero to the time of the last measurable (non-below quantification level) concentrationEO Ethylene oxideNMP N-methyl-2-pyrrolidoneComputingMethodologies_COMPUTERGRAPHICSAUC∞ Area under the analyte concentration vs time curve from time zero to infinite timeP407 Poloxamer 407In vitro releasePoloxamerCMT Critical micellar temperatureGel erosionIn vitrot1/2 Apparent terminal elimination half-lifechemistryMDR-TB Multi-drug resistant tuberculosisAUC80h Area under the analyte concentration versus time curve from time zero to 80 htlast Sampling time until the last measurable (non-below quantification level) analyte plasma concentrationMRM Multiple reaction monitoringNuclear chemistrySustained releaseInternational Journal of Pharmaceutics: X
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Analysis of insecticides in honey by liquid chromatography–ion trap-mass spectrometry: Comparison of different extraction procedures

2010

The feasibility of different extraction procedures was tested and compared for the determination of 12 organophosphorus and carbamates insecticides in honey samples. In this sense, once the samples were pre-treated - essentially dissolved in hot water by stirring - and before they could be analyzed by liquid chromatography-ion trap-second stage mass spectrometry (LC-MS(2)), four different approaches were studied for the extraction step: QuEChERS, solid-phase extraction (SPE), pressurized liquid extraction (PLE) and solid-phase microextraction (SPME). The main aim of this work was to maximise the sensitivity of pesticides and to minimise the presence of interfering compounds in the extract. …

InsecticidesChromatographyChemistrySolid Phase ExtractionOrganic ChemistryExtraction (chemistry)Relative standard deviationPesticide ResiduesReproducibility of ResultsOrganothiophosphorus CompoundsHoneyGeneral MedicineRepeatabilityPesticideQuechersMass spectrometrySensitivity and SpecificityBiochemistryMass SpectrometryAnalytical ChemistryLinear ModelsSolid phase extractionChromatography LiquidIon trap mass spectrometryJournal of Chromatography A
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Current modulation induced stability in laser diode under high optical feedback strength

2021

The back-reflection of emitted laser beam (optical feedback, also know as selfmixing) from various external interfaces are sufficient to cause instability, and prohibiting its use in various fields such as communication, spectroscopy, imaging to name a few. So it is desirable to study the laser dynamics and the conditions causing it to be stable in spite of strong optical feedback. With the aid of mathematical formulation, simulation and backed by experimental evidences, it is demonstrated that the frequency deviation of the laser emission due to current (intensity) modulation alters the dynamic state and boundary conditions of the system such that even under large optical feedback strength…

InterferometriaMaterials scienceGeneral Computer ScienceIntensity modulationPhysics::Optics02 engineering and technology01 natural scienceslaw.inventionSemiconductor laser theory010309 optics020210 optoelectronics & photonicsOpticslaw0103 physical sciences0202 electrical engineering electronic engineering information engineeringGeneral Materials ScienceOptical feedbackLaser diodebusiness.industryGeneral EngineeringFrequency deviationLaserSpectrum analysisAnàlisi espectralself-mixing interferometryVDP::Teknologi: 500InterferometrySelf-mixing interferometryModulation:Ciències de la visió [Àrees temàtiques de la UPC]frequency coefficientlcsh:Electrical engineering. Electronics. Nuclear engineeringFrequency coefficientbusinessSelf-mixing interferometryIntensity modulationFrequency modulationlcsh:TK1-9971intensity modulation
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Dispersive magnetic immunoaffinity extraction. Anatoxin-a determination.

2017

Specific monoclonal antibodies were coupled with magnetic Sepharose-based beads and used, for the first time. The methodology was applied to preconcentrate anatoxin-a from water and the later determination by ion mobility spectrometry (IMS). Dispersive magnetic immunoaffinity (d-MagIA) extraction methodology provided a limit of detection of 0.02μgL-1 and a satisfactory precision with a relative standard deviation lower than 15%. Recoveries were evaluated at 0.5, 1.0 and 5.0μgL-1 anatoxin-a with quantitative values from 91 to 115%. Additionally, isobaric interferences with phenylalanine were completely avoided by the use of the developed d-MagIA extraction coupled to IMS determinations.

Ion-mobility spectrometryRelative standard deviationAnalytical chemistry02 engineering and technology01 natural sciencesBiochemistryAnalytical ChemistryAnatoxin-aSepharosechemistry.chemical_compoundMagneticsLimit of DetectionIon Mobility SpectrometryDetection limitChromatographyCyanobacteria ToxinsSepharose010401 analytical chemistryOrganic ChemistryExtraction (chemistry)Antibodies MonoclonalWaterGeneral Medicine021001 nanoscience & nanotechnology0104 chemical scienceschemistryIsobaric process0210 nano-technologyWater Pollutants ChemicalEnvironmental MonitoringTropanesJournal of chromatography. A
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A non-parametric segmentation methodology for oral videocapillaroscopic images

2014

We aim to describe a new non-parametric methodology to support the clinician during the diagnostic process of oral videocapillaroscopy to evaluate peripheral microcirculation. Our methodology, mainly based on wavelet analysis and mathematical morphology to preprocess the images, segments them by minimizing the within-class luminosity variance of both capillaries and background. Experiments were carried out on a set of real microphotographs to validate this approach versus handmade segmentations provided by physicians. By using a leave-one-patient-out approach, we pointed out that our methodology is robust, according to precision-recall criteria (average precision and recall are equal to 0.9…

Jaccard indexComputer scienceHealth InformaticsWavelet analysisMathematical morphologyStandard deviationCross-validationOral videocapillaroscopyWaveletImage Processing Computer-AssistedHumansSegmentationComputer visionMouthSettore INF/01 - Informaticabusiness.industryMicrocirculationNonparametric statisticsReproducibility of ResultsModels TheoreticalCapillariesComputer Science ApplicationsMathematical morphologyLeave-one-out cross-validationArtificial intelligencebusinessPrecision and recallNon-parametric image segmentationAlgorithmsSoftware
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Noise Induced Phenomena in point Josephson junctions

2008

We present the analysis of the mean switching time and its standard deviation of short overdamped Josephson junctions, driven by a direct current and a periodic signal. The effect of noise enhanced stability is investigated. It is shown that fluctuations may both decrease and increase the switching time.

Josephson effectPhysicsCondensed matter physicsCondensed Matter - SuperconductivityApplied MathematicsDirect currentFOS: Physical sciencesNoise (electronics)Stability (probability)Standard deviationSwitching timePeriodic functionSuperconductivity (cond-mat.supr-con)Modeling and SimulationMetastabilityCondensed Matter::SuperconductivityNoise Induced PhenomenaEngineering (miscellaneous)
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NOAA-AVHRR Orbital Drift Correction: Validating Methods Using MSG-SEVIRI Data as a Benchmark Dataset

2021

National Oceanic and Atmospheric Administration–Advanced Very High Resolution Radiometer (NOAA-AVHRR) data provides the possibility to build the longest Land Surface Temperature (LST) dataset to date, starting in 1981 up to the present. However, due to the orbital drift of the NOAA platforms, no LST dataset is available before 2000 and the arrival of newer platforms. Although numerous methods have been developed to correct this orbital drift effect on the LST, a lack of validation has prevented their application. This is the gap we bridge here by using the 15 min temporal resolution of Meteosat Second Generation–Spinning Enhanced Visible and Infra-Red Imager (MSG-SEVIRI) data to simulate dr…

LSTRadiometer010504 meteorology & atmospheric sciencesSeries (mathematics)ScienceQLST; temperature; time series; homogenizationhomogenization0211 other engineering and technologiesSolar zenith angletemperatureAbsolute value02 engineering and technology01 natural sciencesStandard deviationTemporal resolutionGeneral Earth and Planetary SciencesEnvironmental scienceNoise (video)time seriesImage resolution021101 geological & geomatics engineering0105 earth and related environmental sciencesRemote sensingRemote Sensing
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Sentence judgments and the grammar of poetry: Linking linguistic structure and poetic effect

2018

The present article aims to show that the elicitation of intuitive literary-aesthetic sentence judgments taps into readers’ poetry-specific linguistic register, and how such judgment methods can be used to support and constrain future theory formation in experimental poetics. In two experiments, we examined effects of deviant and parallelistic linguistic features on readers’ grammatical and literary-aesthetic evaluation of single sentences.In Experiment 1, participants rated carefully selected and modified lines of German poetry for either acceptability or poeticity (n = 40 each) on a 7-point scale; original lines featured grammatical deviations that were absent in modified versions. All in…

Linguistics and LanguageLiterature and Literary Theorymedia_common.quotation_subjectdeviation050105 experimental psychologyLanguage and LinguisticsGerman03 medical and health sciencesFluency0302 clinical medicineacceptabilityPerception0501 psychology and cognitive sciencesProcessing fluencymedia_commonparallelismGrammarPoetryCommunication05 social sciencesprocessing fluencySyntaxLinguisticslanguage.human_languagelanguagesentence judgmentsPsychology030217 neurology & neurosurgerySentencepoetryPoetics
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A simplified method for estimating the total water vapor content over sea surfaces using NOAA-AVHRR channels 4 and 5

2002

A simplified method for estimating the total amount of atmospheric water vapor, W, over sea surfaces using NOAA-AVHRR Channels 4 and 5 is presented. This study has been carried out using simulated AVHRR data at 11 and 12 /spl mu/m (with MODTRAN 3.5 code and the TIGR database) and AVHRR, PODAAC, and AVISO databases provided by the Louis Pasteur University (Strasbourg-France), NASA-NOAA, and Meteo France, respectively. The method is named linear atmosphere-surface temperature relationship (LASTR). It is based on a linear relationship between the effective atmospheric temperature in AVHRR Channel 4 and sea surface temperature. The LASTR method was compared with the linear split-window relation…

MODTRANInstrumentationBrightness temperatureLinear regressionGeneral Earth and Planetary SciencesEnvironmental scienceRadiometryElectrical and Electronic EngineeringAtmospheric temperatureStandard deviationWater vaporRemote sensingIEEE Transactions on Geoscience and Remote Sensing
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