Search results for " parameter"

showing 10 items of 13688 documents

Assistive robotic walker parameter identification for estimation of human thrust without force sensors

2017

In this paper we propose a parameter identification procedure for the wheel-motor dynamic of a robotic walker, i.e. a commercial trolley for elderly people endowed with cognitive, sensing and guidance capabilities. The objective of the wheel-motor dynamic model is to generate a suitable time reference to be used in an estimation algorithm. The ultimate goal of the estimation algorithm is to retrieve the thrust, i.e. torque and force, that the older adult user of the robotic walker applies to the platform. These quantities are of paramount importance in order to adopt intelligent and comfortable walker guidance algorithms. The novelty of this approach is the avoidance of additional costly se…

Estimation0209 industrial biotechnologyEngineeringbusiness.industry020208 electrical & electronic engineeringNoveltyThrustControl engineering02 engineering and technologyForce sensorIdentification (information)020901 industrial engineering & automationSettore ING-INF/04 - Automatica0202 electrical engineering electronic engineering information engineeringMedical robotics mobile robots parameter estimation robot dynamics wheelsElderly peopleTorquebusiness2017 IEEE 3rd International Forum on Research and Technologies for Society and Industry (RTSI)
researchProduct

Non-parametric probabilistic forecasting of academic performance in Spanish high school using an epidemiological modelling approach

2013

Academic underachievement is a concern of paramount importance in Europe, and particularly in Spain, where around of 30% of the students in the last two courses in high school do not achieve the minimum knowledge academic requirement. In order to analyse this problem, we propose a mathematical model via a system of ordinary differential equations to study the dynamics of the academic performance in Spain. Our approach is based on the idea that both, good and bad study habits, are a mixture of personal decisions and influence of classmates. Moreover, in order to consider the uncertainty in the estimation of model parameters, a bootstrapping approach is employed. This technique permits to for…

EstimationComputer scienceBootstrappingApplied MathematicsNonparametric statisticsUncertaintyModel parametersConfidence intervalModellingComputational MathematicsTransmission dynamicsOrder (exchange)EconometricsBootstrappingProbabilistic forecastingAcademic underachievementPredictionMATEMATICA APLICADA
researchProduct

Parameter estimation: an advanced simulation tool in biomedicine

1990

Parameter estimation as an advanced tool in biomedicine have become extremely important in the study of biological systems. With increasing physiological knowledge and more efficient computers, modelling, simulation, and estimation have grown during the past 20 years to one of the most powerful tools of biomedical system analysis. Moreover modelling, simulation and estimation is of growing importance for determination of non-measurable parameters and state variables of biomedical systems as well as for case studies research of biomedical processes, which have been developed by physicians and system engineers and have also been widely accepted by biomedical scientists. These models already d…

EstimationState variableSystems theoryComputer scienceSystems simulationProcess (engineering)business.industryEstimation theorySystem parametersBiochemical engineeringbusinessBiomedicine
researchProduct

Mathematical modeling and parameters estimation of a car crash using data-based regressive model approach

2011

Author's version of an article in the journal: Applied Mathematical Modelling. Also available from the publisher at: http://dx.doi.org/10.1016/j.apm.2011.04.024 n this paper we present the application of regressive models to simulation of car-to-pole impacts. Three models were investigated: RARMAX, ARMAX and AR. Their suitability to estimate physical system parameters as well as to reproduce car kinematics was examined. It was found out that they not only estimate the one quantity which was used for their creation (car acceleration) but also describe the car's acceleration, velocity and crush. A virtual experiment was performed to obtain another set of data for use in further research. An A…

Estimationregressive models parameters estimation viscoelastic modeling virtual experimentComputer sciencebusiness.industrySpeech recognitionApplied MathematicsVDP::Technology: 500::Mechanical engineering: 570CrashMachine learningcomputer.software_genreVDP::Mathematics and natural science: 400::Mathematics: 410Modeling and SimulationModelling and SimulationVirtual experimentArtificial intelligencebusinesscomputerApplied Mathematical Modelling
researchProduct

CCDC 162819: Experimental Crystal Structure Determination

2001

Related Article: H.Fleischer, D.Schollmeyer|2001|Acta Crystallogr.,Sect.E:Struct.Rep.Online|57|o330|doi:10.1107/S1600536801004408

Ethanedithiol diacetateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
researchProduct

CCDC 902683: Experimental Crystal Structure Determination

2013

Related Article: Yu Chen, Derong Cao, Lingyun Wang, Minqing He, Lixia Zhou, Dieter Schollmeyer, Herbert Meier|2013|Chem.-Eur.J.|19|7064|doi:10.1002/chem.201204628

Ethyl ((91419242628303234-nonamethoxyhexacyclo[21.2.2.2^36^.2^811^.2^1316^.2^1821^]pentatriaconta-1(25)3581013151820232628303234-pentadecaen-4-yl)oxy)acetateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
researchProduct

CCDC 640295: Experimental Crystal Structure Determination

2007

Related Article: C.Peifer, D.Ott, D.Schollmeyer, S.Laufer|2007|Acta Crystallogr.,Sect.E:Struct.Rep.Online|63|o1415|doi:10.1107/S1600536807007660

Ethyl (23-dihydro-1H1'H-23'-biindol-1-yl)glyoxylateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
researchProduct

CCDC 766325: Experimental Crystal Structure Determination

2010

Related Article: L.Kiss, E.Forro, R.Sillanpaa, F.Fulop|2010|Tetrahedron|66|3599|doi:10.1016/j.tet.2010.03.030

Ethyl 1-((1R*2R*3R*4R*)-3-((t-butoxycarbonyl)amino)-4-(ethoxycarbonyl)-2-hydroxycyclopentyl)-1H-123-triazole-4-carboxylateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
researchProduct

CCDC 879905: Experimental Crystal Structure Determination

2013

Related Article: Kai-Tai Yip, R.Y.Nimje, M.V.Leskinen, P.M.Pihko|2012|Chem.-Eur.J.|18|12590|doi:10.1002/chem.201201988

Ethyl 2-oxo-5-(246-trimethoxyphenyl)cyclopentanecarboxylateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
researchProduct

CCDC 707421: Experimental Crystal Structure Determination

2009

Related Article: L.Kiss, M.Nonn, E.Forro, R.Sillanpaa, F.Fulop|2009|Tetrahedron Lett.|50|2605|doi:10.1016/j.tetlet.2009.03.119

Ethyl 4-(benzoylamino)-3-methyl-4566a-tetrahydro-3aH-cyclopenta[d][12]oxazole-5-carboxylateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
researchProduct