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Journal articles on the topic 'Algorithme de restitution'

Author: Grafiati

Published: 22 June 2024

Last updated: 31 July 2025

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1

Keldermann, R. H., K. H. W. J. ten Tusscher, M. P. Nash, R. Hren, P. Taggart, and A. V. Panfilov. "Effect of heterogeneous APD restitution on VF organization in a model of the human ventricles." American Journal of Physiology-Heart and Circulatory Physiology 294, no. 2 (2008): H764—H774. http://dx.doi.org/10.1152/ajpheart.00906.2007.

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The onset of ventricular fibrillation (VF) has been associated with steep action potential duration restitution in both clinical and computational studies. Recently, detailed clinical restitution properties in cardiac patients were reported showing a substantial degree of heterogeneity in restitution slopes at the epicardium of the ventricles. The aim of the present study was to investigate the effect of heterogeneous restitution properties in a three-dimensional model of the ventricles using these clinically measured restitution data. We used a realistic model of the human ventricles, includi

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Shih, Chihhsiong. "Analyzing and Comparing Shot Planning Strategies and Their Effects on the Performance of an Augment Reality Based Billiard Training System." International Journal of Information Technology & Decision Making 13, no. 03 (2014): 521–65. http://dx.doi.org/10.1142/s0219622014500278.

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The shot planning of a cue after it collides with an object ball determines a player's success in a billiard game. This paper proposes three novel gaming strategies to investigate the effect of cue shots planning on gaming performance. The first algorithm considers the nearest pocket for every selected target object ball, seeking optimal post collision positions. The second algorithm considers all pocket and target object ball combinations during both the pre- and post-collision optimal shot selection processes. The third algorithm considers a multi-objective optimization process for optimal s

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3

Alaci, Stelian, Constantin Filote, Florina-Carmen Ciornei, Oana Vasilica Grosu, and Maria Simona Raboaca. "An Analytical Solution for Non-Linear Viscoelastic Impact." Mathematics 9, no. 16 (2021): 1849. http://dx.doi.org/10.3390/math9161849.

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The paper presents an analytical solution for the centric viscoelastic impact of two smooth balls. The contact period has two phases, compression and restitution, delimited by the moment corresponding to maximum deformation. The motion of the system is described by a nonlinear Hunt–Crossley equation that, when compared to the linear model, presents the advantage of a hysteresis loop closing in origin. There is only a single available equation obtained from the theorem of momentum. In order to solve the problem, in the literature, there are accepted different supplementary hypotheses based on e

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Matthews, Gareth D. K., Laila Guzadhur, Andrew Grace, and Christopher L.-H. Huang. "Nonlinearity between action potential alternans and restitution, which both predict ventricular arrhythmic properties in Scn5a+/− and wild-type murine hearts." Journal of Applied Physiology 112, no. 11 (2012): 1847–63. http://dx.doi.org/10.1152/japplphysiol.00039.2012.

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Electrocardiographic QT- and T-wave alternans, presaging ventricular arrhythmia, reflects compromised adaptation of action potential (AP) duration (APD) to altered heart rate, classically attributed to incomplete Nav1.5 channel recovery prior to subsequent stimulation. The restitution hypothesis suggests a function whose slope directly relates to APD alternans magnitude, predicting a critical instability condition, potentially generating arrhythmia. The present experiments directly test for such correlations among arrhythmia, APD alternans and restitution. Mice haploinsufficient in the Scn5a,

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Dragna, Ionuț-Bogdan, Nicolae Pandrea, and Nicolae-Doru Stănescu. "Simultaneous Collision of the Rigid Body at Two Points." Symmetry 13, no. 10 (2021): 1924. http://dx.doi.org/10.3390/sym13101924.

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We present a new approach based on the notion of inertance for the simultaneous collisions without friction of a rigid solid. The calculations are performed using the screw (plückerian) coordinates, while the results are obtained in matrix form, and they may be easily implemented for different practical situations. One calculates the velocities after collision, the energy of lost velocities, and the loss of the kinetic energy. The general algorithm of calculation is described in the paper. The main assumption is that the normal velocities at the contact points vanish simultaneously. The coeffi

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Yigit, A. S., A. G. Ulsoy, and R. A. Scott. "Dynamics of a Radially Rotating Beam With Impact, Part 1: Theoretical and Computational Model." Journal of Vibration and Acoustics 112, no. 1 (1990): 65–70. http://dx.doi.org/10.1115/1.2930100.

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A model is presented for the dynamics of a radially rotating beam with impact. The model uses a momentum balance method and a coefficient of restitution, and enables one to predict the rigid body motion as well as the elastic motion before and after impact. A computational algorithm is also developed to implement the model. In Part 2 simulation results will be compared with experimental results to investigate the validity of the model.

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CLÉMENT, E., S. LUDING, A. BLUMEN, J. RAJCHENBACH, and J. DURAN. "FLUIDIZATION, CONDENSATION AND CLUSTERIZATION OF A VIBRATING COLUMN OF BEADS." International Journal of Modern Physics B 07, no. 09n10 (1993): 1807–27. http://dx.doi.org/10.1142/s0217979293002602.

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We present numerical and experimental results for the response under external vibration of one-dimensional columns of beads. Such systems are toy-models for dissipative granular materials. We show that a simple algorithm is able to reproduce the basic experimental features. Our main result is that an increase in acceleration leads to a transition from a condensed to a fluidized state of the columns. We discuss this cross-over acceleration as a function of the number of beads and of the restitution coefficient (dissipation) per collision. Also, we show that at high dissipation level clustered s

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Kini, Ananth, Thomas L. Vincent, and Brad Paden. "The Bouncing Ball Apparatus as an Experimental Tool." Journal of Dynamic Systems, Measurement, and Control 128, no. 2 (2005): 330–40. http://dx.doi.org/10.1115/1.2194069.

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The bouncing ball on a sinusoidally vibrating plate exhibits a rich variety of nonlinear dynamical behavior and is one of the simplest mechanical systems to produce chaotic behavior. A computer control system is designed for output calibration, state determination, system identification, and control of a new bouncing ball apparatus designed in collaboration with Magnetic Moments. The experiments described here constitute the first research performed with the apparatus. Experimental methods are used to determine the coefficient of restitution of the ball, an extremely sensitive parameter needed

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Warzecha, Mariusz, and Rafał Grzejda. "AN IMPROVED APPROACH IN THE APPLICATIONOF AN ELASTIC-PLASTIC CONTACT FORCE MODELIN THE MODELLING OF MULTIPLE IMPACTS." Tribologia 303, no. 1 (2023): 83–95. http://dx.doi.org/10.5604/01.3001.0016.2936.

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This paper presents the modelling of a simultaneous multiple collision occurring between several bodies ofa kinematic chain. An algorithm is proposed that when used with an elastoplastic contact model, allows thephenomena that can occur during a multiple-body collision to be taken into account. These phenomena includethe transition of the collision state from the restitution phase directly to the compression phase or successivecollisions occurring along the same normal. The proposed algorithm can be used with any elastoplastic contactmodel. This paper presents its use with a selected model in

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Muslim, Hafizh Adam. "NAIVE BAYES ALGORITHM IN HS CODE CLASSIFICATION FOR OPTIMIZING CUSTOMS REVENUE AND MITIGATION OF POTENTIAL RESTITUTION." Journal of Information Technology and Its Utilization 5, no. 1 (2022): 1–9. http://dx.doi.org/10.56873/jitu.5.1.4740.

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The Directorate General of Customs and Excise, as a government revenue collector, must maximise import duty receipts each year. One common issue is the return of unpaid import duty and/or administrative punishments in the form of fines based on the objection judgement document. The Tax Court could help you minimise your gross receipts at the Customs Office. Data mining techniques are intended to provide valuable information regarding the HS Code classification technique, which can assist customs agents in determining duties and/or customs values. This study makes use of data from the Notificat

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11

Lis-Gutiérrez, Jenny-Paola, Mercedes Gaitán-Angulo, and Jenny Cubillos-Diaz. "Spending Level of Displaced Population Returned to La Palma, Cundinamarca (2018): A Machine Learning Application." Migration Letters 17, no. 5 (2020): 639–49. http://dx.doi.org/10.33182/ml.v17i5.693.

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This research aims to know the variables allowing to predict the spending level of the displacement victims that returned to La Palma, Cundinamarca. For this purpose, a measurement instrument was divided into four sections: characterisation of the population, restitution of economic rights, patterns of economic distribution and, finally, social innovation initiatives. We applied the instrument to 100 participants, and we use different Machine Learning algorithms to know the variables that allow predicting the level of expenses of the displacement victims that returned to La Palma, Cundinamarca

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Xie, Liping, Chihua Lu, Zhien Liu, Yawei Zhu, and Weizhi Song. "A method of generating car sounds based on granular synthesis algorithm." Noise Control Engineering Journal 70, no. 4 (2022): 384–93. http://dx.doi.org/10.3397/1/377031.

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The active sound generation technique for automobiles, where car sounds can be synthesized by means of electronic sound production, is one of the effective methods to achieve the target sound. A method for active sound generation of automobile based on the granular synthesis algorithm is put forward here to avoid the broadband beating phenomena that occur due to the mismatch of parameters of sound granular signals. The comparison of the function expression of sound signal and Hilbert transformation is performed based on the principle of overlap and add; moreover, those parameters (phase, frequ

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Ambrosino, Antonella, Alessandro Di Benedetto, and Margherita Fiani. "Hybrid Denoising Algorithm for Architectural Point Clouds Acquired with SLAM Systems." Remote Sensing 16, no. 23 (2024): 4559. https://doi.org/10.3390/rs16234559.

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The sudden development of systems capable of rapidly acquiring dense point clouds has underscored the importance of data processing and pre-processing prior to modeling. This work presents the implementation of a denoising algorithm for point clouds acquired with LiDAR SLAM systems, aimed at optimizing data processing and the reconstruction of surveyed object geometries for graphical rendering and modeling. Implemented in a MATLAB environment, the algorithm utilizes an approximate modeling of a reference surface with Poisson’s model and a statistical analysis of the distances between the origi

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Vu, Pham Loi, and Nguyen Hoan Thanh. "Determination of parameters of axial symmetrical triple stratified medium after the well yield and the water lowering in regard to elastic properties of weakly penetrating layer." Vietnam Journal of Mechanics 8, no. 1 (1986): 25–31. http://dx.doi.org/10.15625/0866-7136/10360.

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This paper considers the problem of axial symmetrical filtration to a well in triple stratified medium, which includes the surface stratum, the weakly penetrating layer and the well penetrating main fall horizon. The Lowering of S1, S0, S2 in these starts sat isfies the system of equations (0.1) with initial and boundary conditions : (0.2), (0.3), (0.4). In this paper the approximate solution of the problem (0.1)- (0.4) with different coefficients water feeding and filtering penetration µ and T1, i = 1, 2 is obtained. The algorithm of restitution for parameters of layer after well yield and wa

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15

Marghitu, D. B., and Y. Hurmuzlu. "Three-Dimensional Rigid-Body Collisions With Multiple Contact Points." Journal of Applied Mechanics 62, no. 3 (1995): 725–32. http://dx.doi.org/10.1115/1.2897006.

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This article deals with three-dimensional collisions of rigid, kinematic chains with an external surface while in contact with other surfaces. We concentrate on a special class of kinematic chain problems where there are multiple contact points during the impact process. A differential formulation based algorithm is used to obtain solutions that utilize the kinematic, kinetic, and the energetic definitions of the coefficient of restitution. Planar and spatial collisions of a three-link chain with two contact points are numerically studied to compare the outcomes predicted by each approach. Par

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DRAMAS, FLORIAN, SIMON J. THORPE, and CHRISTOPHE JOUFFRAIS. "ARTIFICIAL VISION FOR THE BLIND: A BIO-INSPIRED ALGORITHM FOR OBJECTS AND OBSTACLES DETECTION." International Journal of Image and Graphics 10, no. 04 (2010): 531–44. http://dx.doi.org/10.1142/s0219467810003871.

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Although artificial vision systems could potentially provide very useful input to assistive devices for blind people, such devices are rarely used outside of laboratory experiments. Many current systems attempt to reproduce the visual image via an alternative sensory modality (often auditory or somatosensory), but this dominant "scoreboard" approach, is often difficult to interpret for the user. Here, we propose to offload the recognition problem onto a separate image processing system that then provides the user with just the essential information about the location of objects in the surround

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Corral, Eduardo, Raúl Gismeros Moreno, M. J. Gómez García, and Cristina Castejón. "Nonlinear phenomena of contact in multibody systems dynamics: a review." Nonlinear Dynamics 104, no. 2 (2021): 1269–95. http://dx.doi.org/10.1007/s11071-021-06344-z.

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AbstractIn the present work, an introduction to the contact phenomena in multibody systems is made. The different existing approaches are described, together with their most distinctive features. Then, the term of coefficient of restitution is emphasized as a tool to characterize impact events and the algorithm for calculating the relative indentation between two convex-shaped bodies is developed. Subsequently, the main penalty contact models developed in the last decades are presented and developed, analysing their advantages and drawbacks, as well as their respective applications. Furthermor

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Tamborrini, Giorgio, Martin Schwab, Tamara Hebert, and Viktoria Köhler. "CME-Rheumatologie 20: Parvovirus-B19-induzierte Tenosynovitis?" Praxis 109, no. 1 (2020): 42–46. http://dx.doi.org/10.1024/1661-8157/a003399.

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Zusammenfassung. Wir diskutieren in dieser Fallpräsentation diagnostische Algorithmen und Differenzialdiagnosen bei undifferenzierten Tenosynovitiden. Wir stellen einen Fall eines Patienten mit chronischer Tenosynovitis im 4. Strecksehnenfach vor. Bei unauffälliger Anamnese und aufgrund unauffälliger Laborresultate bestand eine «seronegative (RF), ACPA (CCP)-negative Tenosynovitis ohne Arthritis». Es erfolgte eine diagnostische und therapeutische Tenosynovektomie. Die histologische Aufarbeitung ergab eine positive PCR für Parvovirus B19. Wir erläutern artikuläre und extraartikuläre Manifestati

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Dorren, L. K. A., F. Berger, and U. S. Putters. "Real-size experiments and 3-D simulation of rockfall on forested and non-forested slopes." Natural Hazards and Earth System Sciences 6, no. 1 (2006): 145–53. http://dx.doi.org/10.5194/nhess-6-145-2006.

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Abstract. Only a few rockfall simulation models take into account the mitigating effect of existing forest cover. The objective of our study was to improve the generic rockfall simulation model RockyFor, which does take the effect of forest stands into account, thereby developing a clear method for quantifying and modelling slope surface characteristics based on quantitative field data. To obtain these data we carried out 218 real-size rockfall experiments on forested and non-forested sites on a mountain slope in the French Alps. On the basis of a polygon map representing different diameter cl

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Qi, Zhenmin, and Dapeng Zhu. "Dynamic Analysis and Efficient Numerical Algorithm for Rocking Response of Freestanding Packages Under Transportation Excitations." Applied Sciences 15, no. 9 (2025): 5015. https://doi.org/10.3390/app15095015.

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The transportation of freestanding packages, such as steel coils and prefabricated building components, poses significant safety challenges due to their susceptibility to dynamic responses like rocking, sliding, and overturning under vehicle acceleration. This study focuses on the critical rocking motion, which can lead to catastrophic accidents if the rocking angle exceeds a critical threshold. The package is modeled as a rigid block on a moving base, and its motion states, including static equilibrium, bouncing, rocking, and detachment, are analytically determined, with specific conditions i

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21

Pandrea, Nicolae, and Nicolae-Doru Stănescu. "A new approach in the study of frictionless collisions using inertances." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 12 (2014): 2144–57. http://dx.doi.org/10.1177/0954406214553983.

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This paper presents a complete study on the collision without friction of two rigid bodies with and without bilateral constraints. Our goal is to obtain the same formulae for the impulse, the energy of the lost velocities, and the loss of kinetic energy as in the case of the collision of two particles. The study is performed with the aid of the notion of inertance. The dependence on the constraints is given by the inertances. The calculations are realized using the results from the theory of screws (plückerian coordinates). The obtained formulae are general, written in matrix form, and they ma

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Atwi, Ali, Antoine Khater, and Abbas Hijazi. "Three-dimensional Monte Carlo simulations of the dynamics of macromolecular particles in solutions flowing in mesopores." Open Chemistry 8, no. 5 (2010): 1009–13. http://dx.doi.org/10.2478/s11532-010-0085-0.

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AbstractNumerical simulations are developed to calculate the dynamic equilibrium probability distribution functions (PDF) for macromolecular rod-like particles suspended in a fluid under hydrodynamic flow inside mesopores. The simulations take into account the effects of Brownian and hydrodynamic forces acting on the particles, as well as diffusive collisions of the particles with the solid surface boundaries. An algorithm is developed for this purpose based on Jeffery’s equations for the dynamics of ellipsoidal objects in bulk fluids, and on a mechanism of restitution for the diffusive collis

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Xiao, Yuan, Zhi Yao, and Xu Zhang. "Comprehensive Penetration Evaluation Method in Collisions between a Supply Ship and a Semi-Submersible Platform." Processes 10, no. 6 (2022): 1212. http://dx.doi.org/10.3390/pr10061212.

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Collisions between ships and offshore platforms frequently occur, with severe consequences. Predicting the collision depth under different conditions is very important to evaluate the severity of the consequences. Considering the time-consuming numerical simulation problem and the accuracy problems of existing approximation algorithms, this paper proposes a comprehensive approach to estimating penetration depths by obtaining two collision coefficients for specific collision structures based on the partial results of numerical simulations and simplified theoretical analysis. In this study, the

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Wolf, Johanna, Sebastian Carsch, Clemens Troll, and Jens-Peter Majschak. "Disturbance Simulation in the Packaging Process of Confectionary Using Virtual Commissioning." Machines 8, no. 2 (2020): 19. http://dx.doi.org/10.3390/machines8020019.

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Operator assistance systems can help to reduce disturbance-related machine downtime in food production and packaging processes, especially when combined with machine learning algorithms. These assistance systems analyze the available sensor signals of the process control over time to help operators identify the causes of disturbances. Training such systems requires sufficient test data, which often are hardly available. Thus, this paper presents a study to investigate how test data for teaching machine learning algorithms can be generated by numerical simulation. The potential of using virtual

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Linder, R., C. Weimar, H. C. Diener, S. J. Pöppl, A. Ziegler, and I. R. König. "Two Models for Outcome Prediction." Methods of Information in Medicine 45, no. 05 (2006): 536–40. http://dx.doi.org/10.1055/s-0038-1634115.

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Summary Objectives: Accurately predicting disease progress from a set of predictive variables is an important aspect of clinical work. For binary outcomes, the classical approach is to develop prognostic logistic regression (LR) models. Alternatively, machine learning algorithms were proposed with artificial neural networks (ANN) having become popular over the last decades. Although some studies have compared predictive accuracies of LR and ANN models, some concerns regarding their methodological quality have been voiced. Our comparison has the advantage of being based on two large independent

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GRAHOVAC, NENAD, MIODRAG ZIGIC, and DRAGAN SPASIC. "ON IMPACT SCRIPTS WITH BOTH FRACTIONAL AND DRY FRICTION TYPE OF DISSIPATION." International Journal of Bifurcation and Chaos 22, no. 04 (2012): 1250076. http://dx.doi.org/10.1142/s0218127412500769.

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We study the dynamics of a mass, sliding on a dry surface and impacting against a rigid wall through a viscoelastic body, that we model as a straight rod of negligible mass. The problem comprises a constitutive model of the viscoelastic body with fractional derivatives of stress and strain, restrictions on the coefficients that follow from Clausius–Duhem inequality, and discontinuous inequality constraint conditions imposed by the Coulomb friction model. We show that the dynamics of the problem is governed by a single integro-differential inclusion. By use of the slack variable algorithm the p

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Arsenović, D., S. B. Vrhovac, Z. M. Jakšić, Lj Budinski-Petković, and A. Belić. "Simulation Study of Granular Compaction Dynamics under Vertical Tapping." Materials Science Forum 555 (September 2007): 107–12. http://dx.doi.org/10.4028/www.scientific.net/msf.555.107.

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We study by numerical simulation the compaction dynamics of frictional hard disks in two dimensions, subjected to vertical shaking. Shaking is modeled by a series of vertical expansions of the disk packing, followed by dynamical recompression of the assembly under the action of gravity. The second phase of the shake cycle is based on an efficient event−driven molecular−dynamics algorithm. We analyze the compaction dynamics for various values of friction coefficient and coefficient of normal restitution. We find that the time evolution of the density is described by ρ(t)=ρ∞ − ρEα[−(t/τ)α], wher

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Yang, Yukun, Baoqin Wen, Longpeng Ding, Liqiao Li, Xinghua Chen, and Jingbin Li. "Soil Particle Modeling and Parameter Calibration for Use with Discrete Element Method." Transactions of the ASABE 64, no. 6 (2021): 2011–23. http://dx.doi.org/10.13031/trans.14083.

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HighlightsSoil particle shapes were statistically analyzed, and four representative particles were obtained.A particle model was established using three-dimensional non-contact surface topography.This study used a response surface design method to calibrate significant soil parameters.The simulation parameters were verified by rotary tiller experiment.Abstract. The discrete element method (DEM) has broad prospects for application in soil-tool simulations. To ensure the reliability of simulations, appropriate simulation parameters and particle modeling are essential. Therefore, in this article,

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Plante, Ianik, Tony Slaba, Zarana Shavers, and Megumi Hada. "A Bi-Exponential Repair Algorithm for Radiation-Induced Double-Strand Breaks: Application to Simulation of Chromosome Aberrations." Genes 10, no. 11 (2019): 936. http://dx.doi.org/10.3390/genes10110936.

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Background: Radiation induces DNA double-strand breaks (DSBs), and chromosome aberrations (CA) form during the DSBs repair process. Several methods have been used to model the repair kinetics of DSBs including the bi-exponential model, i.e., N(t) = N1exp(−t/τ1) + N2exp(−t/τ2), where N(t) is the number of breaks at time t, and N1, N2, τ1 and τ2 are parameters. This bi-exponential fit for DSB decay suggests that some breaks are repaired rapidly and other, more complex breaks, take longer to repair. Methods: The bi-exponential repair kinetics model is implemented into a recent simulation code cal

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Li, Ziwen, Xiangyuan Zeng, Tongge Wen, and Yonglong Zhang. "Numerical Comparison of Contact Force Models in the Discrete Element Method." Aerospace 9, no. 11 (2022): 737. http://dx.doi.org/10.3390/aerospace9110737.

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The discrete element method (DEM) is usually applied in analyzing the scientifical origin/evolution of the asteroids and the landing/sampling of the regolith. In order to manage the contact between the non-spherical granules, the Polygonal Contact Model (PCM) has been introduced into the DEM method. This paper applies four different contact force models in the newly-proposed DEM algorithm to analyze their difference and implication. The four contact force models include one linear model and three nonlinear models derived from the complete Mindlin–Deresiewicz equations. By considering the macro

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Rossi, L., F. Ioli, E. Capizzi, L. Pinto, and M. Reguzzoni. "IMPROVING UAV TELEMETRY POSITIONING FOR DIRECT PHOTOGRAMMETRY." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B2-2021 (June 28, 2021): 61–68. http://dx.doi.org/10.5194/isprs-archives-xliii-b2-2021-61-2021.

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Abstract. A fundamental step of UAV photogrammetric processes is to collect Ground Control Points (GCPs) by means of geodetic-quality GNSS receivers or total stations, thus obtaining an absolutely oriented model with a centimetric accuracy. This procedure is usually time-consuming, expensive and potentially dangerous for operators who sometimes need to reach inaccessible areas. UAVs equipped with low-cost GNSS/IMU sensors can provide information about position and attitude of the images. This telemetry information is not enough for a photogrammetric restitution with a centimetric accuracy, but

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Chen, Jia, Li Xiong, Honghui Wang, and Yi Yang. "Collision Analysis and Motion Control Based on Lift-Type Power Catwalk." Actuators 13, no. 12 (2024): 494. https://doi.org/10.3390/act13120494.

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To address vibration issues in the operation of a lift-type power catwalk, dynamic analysis was conducted using ADAMS 2020 software. The analysis revealed that the vibrations originate from collisions that occur during the transition from the translation to the climbing phase. A quantitative vibration model was developed using the work–energy theorem, incorporating the coefficient of restitution. Based on this model, a composite disturbance rejection control law was designed, integrating sliding-mode speed planning with active disturbance rejection speed tracking. The MATLAB 2022b/Simulink sim

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Garcia-Romeu-Martinez, M. A., Michael A. Sek, Vincent Rouillard, and V. A. Cloquell-Ballester. "Interpreting Shock Data to Estimate Drop Height Levels During Handling." Applied Mechanics and Materials 7-8 (August 2007): 243–50. http://dx.doi.org/10.4028/www.scientific.net/amm.7-8.243.

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During distribution, consignments undergo numerous handling processes both mechanized and manual. These operations are known to produce drops and impacts of varying severity which have a potential to cause damage to the product. These shocks are the main parameters required for the optimum design of protective packaging systems. The severity of the shocks is often described in terms of their effective (free-fall equivalent) drop height (EDH) and impact orientation, in order to facilitate the laboratory testing conducted on a free-fall apparatus. The preferred approach is to survey the shocks w

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Bai, Xueyu, Qingbing Dong, Han Zheng, and Kun Zhou. "Modelling of Non-Newtonian Starved Thermal-elastohydrodynamic Lubrication of Heterogeneous Materials in Impact Motion." Acta Mechanica Solida Sinica 34, no. 6 (2021): 954–76. http://dx.doi.org/10.1007/s10338-021-00284-2.

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AbstractThis study presents a numerical model for the thermal-elastohydrodynamic lubrication of heterogeneous materials in impact motion, in which a rigid ball bounces on a starved non-Newtonian oil-covered plane surface of an elastic semi-infinite heterogeneous solid with inhomogeneous inclusions. The impact–rebound process and the microscopic response of the subsurface inhomogeneous inclusions are investigated. The inclusions are homogenized according to Eshelby’s equivalent inclusion method. The Elrod algorithm is adopted to determine the lubrication starvation based on the solutions of pre

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Reibis, Rona, Annett Salzwedel, Ana Abreu, et al. "The importance of return to work: How to achieve optimal reintegration in ACS patients." European Journal of Preventive Cardiology 26, no. 13 (2019): 1358–69. http://dx.doi.org/10.1177/2047487319839263.

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The vocational reintegration of patients after an acute coronary syndrome is a crucial step towards complete convalescence from the social as well as the individual point of view. Return to work rates are determined by medical parameters such as left ventricular function, residual ischaemia and heart rhythm stability, as well as by occupational requirement profile such as blue or white collar work, night shifts and the ability to commute (which is, in part, determined by physical fitness). Psychosocial factors including depression, self-perceived health situation and pre-existing cognitive imp

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Özkuyumcu, Süleyman Aykutalp, and Ayşe Kalaycı Önaç. "PERFORMANCE ANALYSIS OF ARTIFICIAL INTELLIGENCE TOOLS IN DIGITIZATION OF LOST CULTURAL HERITAGE: SARAY-I AMIRE." TURKISH JOURNAL OF FOREST SCIENCE 9, no. 1 (2025): 12–24. https://doi.org/10.32328/turkjforsci.1676049.

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The digitization of cultural heritage plays a critical role in the preservation of historical artifacts and their transmission to future generations. This study focuses on the digital reconstruction of the Saray-ı Amire in Manisa, a lost architectural structure from the Ottoman period, and evaluates the performance of artificial intelligence (AI) tools throughout this process. Traditional modeling techniques are compared with AI-based algorithms in terms of accuracy, speed, and level of detail. Data derived from archival documents, historical maps, engravings, and analogous structures were uti

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Fétick, R. J.-L., L. M. Mugnier, T. Fusco, and B. Neichel. "Blind deconvolution in astronomy with adaptive optics: the parametric marginal approach." Monthly Notices of the Royal Astronomical Society 496, no. 4 (2020): 4209–20. http://dx.doi.org/10.1093/mnras/staa1813.

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ABSTRACT One of the major limitations of using adaptive optics (AO) to correct image post-processing is the lack of knowledge about the system’s point spread function (PSF). The PSF is not always available as direct imaging on isolated point-like objects, such as stars. The use of AO telemetry to predict the PSF also suffers from serious limitations and requires complex and yet not fully operational algorithms. A very attractive solution is to estimate the PSF directly from the scientific images themselves, using blind or myopic post-processing approaches. We demonstrate that such approaches s

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Buurke, Jaap H., Anand V. Nene, Gert Kwakkel, Victorien Erren-Wolters, Maarten J. IJzerman, and Hermie J. Hermens. "Recovery of Gait After Stroke: What Changes?" Neurorehabilitation and Neural Repair 22, no. 6 (2008): 676–83. http://dx.doi.org/10.1177/1545968308317972.

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Background. Little is known about whether changes in coordination patterns of muscle activation after stroke are related to functional recovery of walking. Objective . The present study investigated the longitudinal relationship between changes in neuromuscular activation patterns of paretic muscles in hemiplegic gait and improvement in walking ability after stroke. Methods. Thirteen patients diagnosed with a first unilateral ischemic stroke had their recovery of walking measured by the Rivermead Mobility Index, Functional Ambulation Categories, Barthel Index, Trunk Control Test, Motricity Ind

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Philibert, Alban, Marie Lothon, Julien Amestoy, et al. "CALOTRITON: a convective boundary layer height estimation algorithm from ultra-high-frequency (UHF) wind profiler data." Atmospheric Measurement Techniques 17, no. 6 (2024): 1679–701. http://dx.doi.org/10.5194/amt-17-1679-2024.

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Abstract. Long time series of observations of atmospheric dynamics and composition are collected at the French Pyrenean Platform for Observation of the Atmosphere (P2OA). Planetary boundary layer depth is a key variable of the climate system, but it remains difficult to estimate and analyse statistically. In order to obtain reliable estimates of the convective boundary layer height (Zi) and to allow long-term series analyses, a new restitution algorithm, named CALOTRITON, has been developed. It is based on the observations of an ultra-high-frequency (UHF) radar wind profiler (RWP) from P2OA wi

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Barrile, Vincenzo, Antonino Fotia, Giuliana Bilotta, and Domenico De Carlo. "Integration of geomatics methodologies and creation of a cultural heritage app using augmented reality." Virtual Archaeology Review 10, no. 20 (2019): 40. http://dx.doi.org/10.4995/var.2019.10361.

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<p>3D modelling of archaeological and historical structures is the new frontier in the field of conservation science. Similarly, the identification of buried finds, which enhances their multimedia diffusion and restoration, has gained relevance. As such sites often have a high level of structural complexity and complicated territorial geometries, accuracy in the creation of 3D models and the use of sophisticated algorithms for georadar data analysis are crucial. This research is the first step in a larger project aimed at reclaiming the ancient villages located in the Greek area of south

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Rengifo, Carolina, Jean-Rémy Chardonnet, Hakim Mohellebi, Damien Paillot, and Andras Kemeny. "Driving simulator study of the relationship between motion strategy preference and self-reported driving behavior." SIMULATION 97, no. 9 (2021): 619–33. http://dx.doi.org/10.1177/0037549721999716.

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Faithful motion restitution in driving simulators normally focuses on track monitoring and maximizing the platform workspace by leaving aside the principal component—the driver. Therefore, in this work we investigated the role of the motion perception model on motion cueing algorithms from a user’s viewpoint. We focused on the driving behavior influence regarding motion perception in a driving simulator. Participants drove a driving simulator with two different configurations: (a) using the platform dynamic model and (b) using a supplementary motion perception model. Both strategies were compa

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Trizio, I., F. Savini, and A. Giannangeli. "INTEGRATION OF THREE-DIMENSIONAL DIGITAL MODELS AND 3D GIS: THE DOCUMENTATION OF THE MEDIEVAL BURIALS OF AMITERNUM (L’AQUILA, ITALY)." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2 (May 30, 2018): 1121–28. http://dx.doi.org/10.5194/isprs-archives-xlii-2-1121-2018.

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This paper illustrates the results of an experimentation carried out by a multi-disciplinary research group made up of researchers from ITC-CNR of L'Aquila and of archaeologists of the University of L'Aquila. The research project carried out by the team is based on the analysis of the archaeological heritage (in particular, the documentation of some burials found in the medieval site of <i>Amiternum</i>, near L'Aquila). This starts from methods based on digital photogrammetric restitution, based on Structure from Motion (SfM) algorithms, and the generation of photorealistic texture

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MANDEL, P., A. FLEURY, K. DELABRE, and V. HEIM. "La conductivité électrique, témoin opérationnel de la qualité de l’eau dans un réseau de distribution." Techniques Sciences Méthodes 11 (November 21, 2022): 27–37. http://dx.doi.org/10.36904/tsm/202211027.

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Cette étude montre comment les données de conductivité mesurées par des sondes déployées sur un réseau de distribution d’eau potable peuvent être exploitées de manière automatique pour résumer et expliquer les variations spatiales de qualité d’eau. Un algorithme de classification non supervisée est utilisé pour regrouper les sondes dont les profils de conductivité se ressemblent et proposer ainsi des groupes représentant des zones de qualité d’eau homogène. La méthodologie est évaluée sur le réseau du Syndicat des eaux d’Île-de-France (Sedif), à partir des données de 215 sondes mesurant la con

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Saadaoui, H., A. Ghennioui, B. Ikken, H. Rhinane, and M. Maanan. "USING GIS AND PHOTOGRAMMETRY FOR ASSESSING SOLAR PHOTOVOLTAIC POTENTIAL ON FLAT ROOFS IN URBAN AREA CASE OF THE CITY OF BEN GUERIR / MOROCCO." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W12 (February 26, 2019): 155–66. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w12-155-2019.

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<p><strong>Abstract.</strong> Renewable energy sources are at the forefront of political discussions around the world because of the scarcity of fossil fuels and climate change caused by the accumulation of greenhouse gases. By 2030, Morocco will cover 52% of these energy needs through renewable energies, in order to preserve the environment (COP 22). This paper aims to estimate the potential of photovoltaic solar energy from flat roofs in the city of Ben Guerir, Morocco using remote sensing and GIS data. To achieve this goal, vector orthophoto resulting from the photogrammet

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Ghenaiet, Adel. "Predicting Erosion Damage in a Centrifugal Fan." International Journal of Turbomachinery, Propulsion and Power 9, no. 2 (2024): 23. http://dx.doi.org/10.3390/ijtpp9020023.

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Erosion damage can occur in fans and blowers during industrial processes, cooling, and mine ventilation. This study focuses on investigating erosion caused by particulate air flows in a centrifugal fan with forward-inclined blades. This type of fan is particularly vulnerable to erosion due to its radial flow component and flow recirculation. The flow field was solved separately, and the data transferred to the particle trajectory and erosion code. This in-house code implements the Lagrangian approach and the random walk algorithm, including statistical descriptions of particle sizes, release p

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Starovoitova, A. S. "A Crypto Loan: Problems of Legal Qualification." Lex Russica 75, no. 10 (2022): 9–16. http://dx.doi.org/10.17803/1729-5920.2022.191.10.009-016.

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The author considers the concept of «digital money». The paper analyzes the legal nature of various types of digital currency. Special attention is paid to the civil law regime of the cryptocurrency and the peculiarities of its property turnover in an information system using blockchain technologies. The paper examines the following complex debatable issues of civil law: 1. possibility of applying provisions on obligations to digital relations; 2. problems of protecting the rights of digital money holders; 3. enforcing restitution in the digital environment. The paper analyzes the design of a

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Xia, Hongmei, Chuheng Deng, Teng Yang, et al. "Development and Validation of a Discrete Element Simulation Model for Pressing Holes in Sowing Substrates." Agronomy 15, no. 4 (2025): 971. https://doi.org/10.3390/agronomy15040971.

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To conduct DEM simulation research on the collision characteristics between seeds and pressed substrate holes, a discrete element model of mechanically pressed holes in sowing substrates was developed in this study. The geometric DEM models of sowing substrate particles were established based on the sieve test, and the Hertz–Mindlin with JKR contact model was utilized for simulating of the fine, moist, and cohesive substrate particles. The angle of repose measured by the funnel method was served as the target, Plackett–Burman experiments were conducted to screen significant contact mechanical

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Ebrahimian, Masoud, R. Sean Sanders, and Sina Ghaemi. "Dynamics and wall collision of inertial particles in a solid–liquid turbulent channel flow." Journal of Fluid Mechanics 881 (October 25, 2019): 872–905. http://dx.doi.org/10.1017/jfm.2019.749.

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The dynamics and wall collision of inertial particles were investigated in non-isotropic turbulence of a horizontal liquid channel flow. The inertial particles were $125~\unicode[STIX]{x03BC}\text{m}$ glass beads at a volumetric concentration of 0.03 %. The bead-laden flow and the unladen base case had the same volumetric flow rates, with a shear Reynolds number, $Re_{\unicode[STIX]{x1D70F}}$, of the unladen flow equal to 410 based on the half-channel height and friction velocity. Lagrangian measurements of three-dimensional trajectories of both fluid tracers and glass beads were obtained usin

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Belcore, Elena, Stefano Angeli, Elisabetta Colucci, Maria Angela Musci, and Irene Aicardi. "Precision Agriculture Workflow, from Data Collection to Data Management Using FOSS Tools: An Application in Northern Italy Vineyard." ISPRS International Journal of Geo-Information 10, no. 4 (2021): 236. http://dx.doi.org/10.3390/ijgi10040236.

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In the past decades, technology-based agriculture, also known as Precision Agriculture (PA) or smart farming, has grown, developing new technologies and innovative tools to manage data for the whole agricultural processes. In this framework, geographic information, and spatial data and tools such as UAVs (Unmanned Aerial Vehicles) and multispectral optical sensors play a crucial role in the geomatics as support techniques. PA needs software to store and process spatial data and the Free and Open Software System (FOSS) community kept pace with PA’s needs: several FOSS software tools have been d

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Cingolani, Elisa, and Gabriele Fangi. "Spherical Panoramas, and non Metric Images for Long Range Survey, the San Barnaba Spire, Sagrada Familia, Barcelona, Spain." Geoinformatics FCE CTU 6 (December 21, 2011): 109–17. http://dx.doi.org/10.14311/gi.6.15.

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The Sagrada Familia by Gaudi in Barcelona about 80 years after the death of its creator is going quickly to take its final shape as well as, maintain its original form as Gaudi would have wanted, the actual builders say. Complicated and elaborated forms, following the construction layout of the Chapel of Colonia Guell in Santa Coloma, tend to reproduce, on a gigantic scale, the organic forms of trees going to draw the charming and attractive complex of the small church derived from the model of wires used by Gaudi for its design. It has been long debated, and still it is debated on this approa

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