Relevant bibliographies by topics / Moments de flexion des vagues

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  1. Journal articles
  2. Dissertations / Theses
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  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Moments de flexion des vagues'

Author: Grafiati
Published: 3 November 2023
Last updated: 31 July 2025

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Journal articles on the topic "Moments de flexion des vagues"

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Pollard, Jonisha P., William L. Porter, and Mark S. Redfern. "Forces and Moments on the Knee During Kneeling and Squatting." Journal of Applied Biomechanics 27, no. 3 (2011): 233–41. http://dx.doi.org/10.1123/jab.27.3.233.

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Euler angle decomposition and inverse dynamics were used to determine the knee angles and net forces and moments applied to the tibia during kneeling and squatting with and without kneepads for 10 subjects in four postures: squatting (Squat), kneeling on the right knee (One Knee), bilateral kneeling near full flexion (Near Full) and bilateral kneeling near 90° flexion (Near 90). Kneepads affected the knee flexion (p= .002), medial forces (p= .035), and internal rotation moments (p= .006). Squat created loading conditions that had higher varus (p< .001) and resultant moments (p= .027) than k
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Gál, J. M. "Mammalian spinal biomechanics. I. Static and dynamic mechanical properties of intact intervertebral joints." Journal of Experimental Biology 174, no. 1 (1993): 247–80. http://dx.doi.org/10.1242/jeb.174.1.247.

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Four-point bending was used to apply pure extension and flexion moments to the ligamentous lumbosacral spine and pelvic girdle of monkey (Macaca fascicularis), rabbit (domestic and wild, Oryctolagus cuniculus), badger (Meles meles), wallaby (Wallabia rufogrisea frutica), sheep (Ovis aries), seal (Phoca vitulina) and tiger (Panthera tigris). The absolute ranges of angular change in lumbar-lumbar joints (from X-radiographs) were considerable and similar in monkey and wallaby (greater in flexion) and in rabbit and badger (symmetrical in extension and flexion). Mass-specific bending comparisons sh
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Dall, P. M., B. Müller, I. Stallard, J. Edwards, and M. H. Granat. "The functional use of the reciprocal hip mechanism during gait for paraplegic patients walking in the Louisiana State University reciprocating gait orthosis." Prosthetics and Orthotics International 23, no. 2 (1999): 152–62. http://dx.doi.org/10.3109/03093649909071627.

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Reciprocally linked orthoses used for paraplegic walking have some form of linkage between the two hip joints. It has been assumed that flexion of the swinging leg is driven by extension of the stance leg. The aims of this study were to investigate the moments generated around the hip joint by the two cables in a Louisiana State University Reciprocating Gait Orthosis (LSU-RGO). Six (6) subjects were recruited from the Regional Spinal Injuries Centre at Southport, who were experienced RGO users. The cables were fitted with strain gauged transducers to measure cable tension. Foot switches were u
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Gillette, Jason C., Catherine A. Stevermer, Stacey A. Meardon, Timothy R. Derrick, and Charles V. Schwab. "Upper Extremity and Lower Back Moments during Carrying Tasks in Farm Children." Journal of Applied Biomechanics 25, no. 2 (2009): 149–55. http://dx.doi.org/10.1123/jab.25.2.149.

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Farm youth commonly perform animal care tasks such as feeding and watering. The purpose of this study was to determine the effects of age, bucket size, loading symmetry, and amount of load on upper body moments during carrying tasks. Fifty-four male and female participants in four age groups (8–10 years, 12–14 years, 15–17 years, and adults, 20–26 years) participated in the study. Conditions included combinations of large or small bucket sizes, unilateral or bilateral loading, and load levels of 10% or 20% of body weight (BW). During bucket carrying, elbow flexion, shoulder flexion, shoulder a
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Kaur, Mandeep, Daniel Cury Ribeiro, Kate E. Webster, and Gisela Sole. "Association Between Knee Moments During Stair Navigation and Participant-Related Factors in Individuals With Anterior Cruciate Ligament Reconstruction: A Cross-Sectional Study." Journal of Sport Rehabilitation 31, no. 2 (2022): 174–80. http://dx.doi.org/10.1123/jsr.2021-0104.

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Context: Altered knee joint mechanics may be related to quadriceps muscle strength, time since surgery, and sex following anterior cruciate ligament reconstruction (ACLR). The aim of this study was to investigate the association between knee moments, with participant-related factors during stair navigation post-ACLR. Design: Cross-sectional study. Methods: A total of 30 participants (14 women) with ACLR, on average 7.0 (SD 4.4) years postsurgery were tested during stair ascent and descent in a gait laboratory. Motion capture was conducted using a floor-embedded force plate and 11 infrared came
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Andrysek, Jan, Susan Klejman, and John Kooy. "Examination of Knee Joint Moments on the Function of Knee-Ankle-Foot Orthoses During Walking." Journal of Applied Biomechanics 29, no. 4 (2013): 474–80. http://dx.doi.org/10.1123/jab.29.4.474.

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The goal of this study was to investigate clinically relevant biomechanical conditions relating to the setup and alignment of knee-ankle-foot orthoses and the influence of these conditions on knee extension moments and orthotic stance control during gait. Knee moments were collected using an instrumented gait laboratory and concurrently a load transducer embedded at the knee-ankle-foot orthosis knee joint of four individuals with poliomyelitis. We found that knee extension moments were not typically produced in late stance-phase of gait. Adding a dorsiflexion stop at the orthotic ankle signifi
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Weir, Gillian, Jacqueline Alderson, Natalie Smailes, Bruce Elliott, and Cyril Donnelly. "A Reliable Video-based ACL Injury Screening Tool for Female Team Sport Athletes." International Journal of Sports Medicine 40, no. 03 (2019): 191–99. http://dx.doi.org/10.1055/a-0756-9659.

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AbstractThis study aimed to develop a 2-dimensional (2D) video screening tool capable of predicting an athlete’s peak 3-dimensional (3D) knee moments during unplanned sidestepping. 2D video-based kinematic measures were simultaneously captured with 3D peak knee moments for 30 female field hockey players (15 junior, 15 senior). Intra- and intertester repeatability of 2D kinematic measures was performed. Then, linear regression models were used to model 3D knee moments from 2D kinematic variables utilizing 80% of the sample (n=24). Regression equations were then validated on the remaining 20% of
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Hoy, M. G., R. F. Zernicke, and J. L. Smith. "Contrasting roles of inertial and muscle moments at knee and ankle during paw-shake response." Journal of Neurophysiology 54, no. 5 (1985): 1282–94. http://dx.doi.org/10.1152/jn.1985.54.5.1282.

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Intralimb kinetics of the paw-shake response (PSR) were studied in four spinal, adult cats. Using rigid body equations of motion to determine the dynamic interactions between limb segments, knee and ankle joint kinetics were calculated for the steady-state cycles as defined in the preceding paper. Hindlimb motion was filmed (200 frames/s) to obtain knee and ankle kinematics. Responses of flexors and extensors at both joints were recorded synchronously with cinefilm. Ankle and knee joint kinematics were determined from 51 steady-state cycles of 16 PSRs. Average maximum displacements, velocities
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Sørensen, Henrik, Dennis B. Nielsen, Julie S. Jacobsen, Kjeld Søballe, and Inger Mechlenburg. "Isokinetic dynamometry and gait analysis reveal different hip joint status in patients with hip dysplasia." HIP International 29, no. 2 (2018): 215–21. http://dx.doi.org/10.1177/1120700018773401.

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Background: Objective assessment of hip dysplasia patients’ functional hip joint status routinely involves gait analysis or isokinetic dynamometry. However, these methods have shown equivocal results and have not been employed in the same groups of patients and controls. Purpose: To assess hip flexor and abductor moments by isokinetic dynamometry in the dysplasia patient and controls, for which we previously reported smaller flexor and slightly larger abductor moments during gait in patients compared to controls. Methods: The study was designed as a prospective cohort study (Level of Evidence
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Lyle, Mark A., Jake C. Jensen, Jennifer L. Hunnicutt, et al. "Identification of strength and spatiotemporal gait parameters associated with knee loading during gait in persons after anterior cruciate ligament reconstruction." Journal of Athletic Training 2021, preprint (2021): 0000. http://dx.doi.org/10.4085/1062-6050-0186.21.

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ABSTRACT Context: Altered knee moments are common during gait in patients following anterior cruciate ligament reconstruction (ACLR). Modifiable factors that influence knee moments and are feasible to record in clinical settings such as strength and spatiotemporal parameters (e.g. step length, step width) have not been identified in persons after ACLR. Objective: The objective was to identify strength and spatiotemporal gait parameters that can predict knee moments in persons after ACLR. Design: Cross-Sectional Study Setting: Laboratory Patients: Twenty-three participants with ACLR (14.4 ± 17.
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Dissertations / Theses on the topic "Moments de flexion des vagues"

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Kim, Shinwoong. "Experimental study on wave bending moments of a zero-speed rigid containership model in regular, irregular, and equivalent design waves." Electronic Thesis or Diss., Ecole centrale de Nantes, 2023. http://www.theses.fr/2023ECDN0001.

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La thèse vise à étudier les mouvements et les chargements internes d’un modèle de porte-conteneur rigide formé de 9 segments dans des vagues extrêmes. L’étude est principalement expérimentale et est réalisée avec une maquette sans vitesse d’avance dans une houle de face et une houle oblique (-120 degrés). L’étude aboutit à des résultats soulignant l’importance de la prendre en compte les aspects non linéaires des vagues et des réponses structurelles correspondantes.Dans des conditions de mer de face, trois types de vagues sont testés. Des vagues régulières sont utilisées pour s’assurer que le
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Ndoumbe, Samuel. "Étude de la zone d'apparition des vagues à l'interface du film annulaire tombant." Vandoeuvre-les-Nancy, INPL, 2001. http://www.theses.fr/2001INPL582N.

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Cette thèse porte sur l'étude de l'écoulement d'un film liquide mince visqueux tombant sous l'effet de la gravité à l'intérieur d'une conduite cylindrique verticale. L'objectif principal de ce travail est la caractérisation à la fois théorique et expérimentale de la surface du film. Celle-ci se fait sur le plan théorique par le développement d'un modèle 3D à grand nombre de Reynolds et à grande longueur d'onde, dont les principales inconnues sont l'épaisseur instantanée et les débits axial et azimutal. Sur le plan expérimental, on mesure l'épaisseur instantanée avec des sondes conductimétrique
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Khairi, Refzul. "Modélisation de la diffusion électromagnétique par les vagues côtières déferlantes." Phd thesis, Université de Bretagne occidentale - Brest, 2013. http://tel.archives-ouvertes.fr/tel-00839745.

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L'objectif de ce travail de thèse est d'étudier l'interaction des ondes électromagnétiques en bande L avec les vagues côtières déferlantes, en particulier pour un observateur situé à proximité de la surface. Le travail s'attache à effectuer une modélisation électromagnétique précise en lien étroit avec le modèle hydrodynamique. Pour modéliser et calculer les champs électromagnétiques diffusés par les vagues déferlantes, nous utilisons une approche numérique par intégrale de frontière, notamment la Méthode des Moments (MdM). Dans ce cadre, nous focalisons le travail sur la problématique de la f
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Books on the topic "Moments de flexion des vagues"

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Carnet Diabetique V2 V8 Editions. Carnet de Diab�te: Carnet Diabetique Avec Suivi de Glyc�mie Sur 53 Semaines - 111 Pages, 15,24 X 22,86cm - Broch� - Avant Apr�s, 5 Moments de la Journ�e - Photo Oc�an Bleu Turquoise Vagues. Independently Published, 2019.

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Book chapters on the topic "Moments de flexion des vagues"

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Alt, Tobias, Kevin Nolte, Dennis Horn, Dominik Modenbach, Axel Johannes Knicker, and Thomas Jaitner. "Effects of Test Modality and Hip Flexion on Resultant Knee Flexor Moments." In 13th World Congress of Performance Analysis of Sport and 13th International Symposium on Computer Science in Sport. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-31772-9_7.

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Braune, Wilhelm, and Otto Fischer. "Example of Application of the Moments of Inertia Thus Found: Determination of the Period of Oscillation of the Leg at Different Degrees of Flexion." In Determination of the Moments of Inertia of the Human Body and Its Limbs. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-662-11236-6_5.

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Conference papers on the topic "Moments de flexion des vagues"

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Umale, Sagar, John R. Humm, and Narayan Yoganandan. "Effects of Personal Protective Equipment on Spinal Column Loads From Underbody Blast Loading." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-73664.

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Abstract Combat-related spine injuries from improvised explosive devices are attributed to vertical loading transmitted from the seat to the pelvis to the torso and head-neck regions. The presence of personal protective equipment (PPE) adds to the weight of the torso, influencing the load transmission within the vertebral column. In this study, a detailed mid-size male finite element model from the Global Human Body Models Consortium was used to investigate the effect of PPE on spine kinematics, forces, and moments along the vertebral column. The model was positioned on a rigid seat, such that
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Mesfar, Wissal, and Kodjo Moglo. "Effect of Head Weight on the Biomechanics of a Cervical Spine Under Extension and Flexion Moments." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38767.

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The determination of head and neck biomechanics is one of the keys for deep understanding of impairments in neck function and cervical spine pathologies. Finite element models are a valuable tool to perform parametric studies. In this study, we aim to investigate the effect of a 40N head weight on the biomechanics of the head and neck complex under flexion-extension moments. The loading is applied to the centre of mass of the head and the first thoracic vertebra is fixed. Our predictions show that the kinematics and the load distribution at the facet joints were altered significantly with cons
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Kiapour, A., M. Parnianpour, and A. Shirazi-Adl. "Control of Different FEM Based Musculoskeletal Models of Human Lumbar Spine Under Different Loading Conditions Using Optimization Method." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95224.

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In this study the effects of using different musculoskeletal models on load-displacement behavior of FE models of the human lumbar spine under external loads and moments have been analyzed in terms of equilibrium and clinical stability. A simplified and a complex architecture of muscles have been integrated to FE based models of lumbar spine and were loaded to simulate the load carrying behavior of human lumbar spine in flexion, extension and lateral bending. The displacement values as well as muscle forces have been computed and compared in both cases using optimization methods with different
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Nessler, Jeff A., Winsean Lin, and Yasin Dhaher. "Synergistic Moments at the Hip and Knee Joints Are Altered in Post-Stroke Hemiplegic Gait." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-175864.

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Following stroke, many patients are unable to adequately bend their knee during the swing phase of gait [1,2]. This loss of functional control may be related to an abnormal muscle synergy or torque couple in the lower limb, similar to those reported for the upper extremity [3–5]. For example, several investigators have described a flexor synergy that couples shoulder abduction torque and elbow flexion torque under static, isometric conditions [3–4]. This couple is typically altered following stroke [3–4]. In the lower extremity, hip kinetics in the frontal plane appear to be coupled with knee
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Shirazi-Adl, A., and M. Parnianpour. "Response of the Lumbar Spine in Large Compression Loads: Stability Demands in Neutral Postures." In ASME 1996 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/imece1996-1234.

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Abstract In neutral standing and sitting postures, the human lumbar spine is known to be subjected to both compression force and flexion/lateral moments. For the whole trunk, the centre of mass has been reported to be about 2.0 cm anterior to the L1-L2 vertebral centroid [1]. Due to the asymmetry of the upper body about the sagittal plane, lateral moments likely exist as well. The magnitude of these moments is affected by the location of the line of gravity relative to the vertebrae, and therefore, by the spinal posture (ie, pelvic rotation and lumbar lordosis). Changes in the sagittal curvatu
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Huang, Changhua, Nianfeng Yang, Rencheng Wang, Changhong Zhu, and Dewen Jin. "Redundant Muscular Force Analysis of Lower Extremity During Swing Phase." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0497.

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Abstract Swing phase of the human gait is defined as the time period during the bottom of foot is off the ground. At the beginning of swing phase there is a flexion of knee joint, which is important to form the clearance between the ground and the toe. In 1992 Winter referred to that the average clearance is about 1.29cm in a normal swing phase and mainly dominated by the flexion of the knee joint. If there doesn’t have enough flexion of knee, the tiptoe will collide with the ground during the swing phase. Otherwise, in this case, there must be an additional trunk movement to raise the coxa jo
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DeVries, Nicole A., Anup A. Gandhi, Douglas C. Fredericks, Joseph D. Smucker, and Nicole M. Grosland. "In Vitro Study of the C2-C7 Sheep Cervical Spine." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53167.

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Due to the limited availability of human cadaveric specimens, animal models are often utilized for in vitro studies of various spinal disorders and surgical techniques. Sheep spines have similar geometry, disc space, and lordosis as compared to humans [1,2]. Several studies have identified the geometrical similarities between the sheep and human spine; however these studies have been limited to quantifying the anatomic dimensions as opposed to the biomechanical responses [2–3]. Although anatomical similarities are important, biomechanical correspondence is imperative to understand the effects
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Schimoler, Patrick J., Jeffrey S. Vipperman, Laurel Kuxhaus, et al. "Control System for an Elbow Joint Motion Simulator." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42806.

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The many muscles crossing the elbow joint allow for its motions to be created from different combinations of muscular activations. Muscles are strictly contractile elements and the joints they surround rely on varying loads from opposing antagonists for stability and movement. In designing a control system to actuate an elbow in a realistic manner, unidirectional, tendon-like actuation and muscle co-activation must be considered in order to successfully control the elbow’s two degrees of freedom. Also important is the multifunctionality of certain muscles, such as the biceps brachii, which cre
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Meghdari, Ali, and Amir H. Bahrami. "Mathematical Modeling of Normal, Degenerated, and Fused Cervical Spines Using IAR’S Concept." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/bed-23038.

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Abstract During flexion/extension, of the head-neck system, cervical spine undergoes a stepwise motion from the upper to lower regions with a specific time lag. Motion of each vertebrae is composed of a translation and a rotation with respect to lower vertebrae, which may be considered as an absolute rotation about an axis called Instantaneous Axis of Rotation (IAR). Location of this axis is different between normal, and degenerated spines. In this research intersegmental force-moments are evaluated and compared in normal, degenerated, and fused subjects employing a biomechanical model of head
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Li, Siping, Anita N. Vasavada, and Scott L. Delp. "Effect of Cervical Spine Position on Moment-Generating Potentials of Neck Muscles." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0311.

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Abstract The stability of the head/neck system is achieved through the interplay of the passive ligamentous cervical spine and active neck musculature under neural control (Panjabi, 1992). Neck muscles provide forces and moments to generate movements of head/neck and maintain their stability. Many previous analyses have used muscle geometry at the neutral head position to calculate the forces and moments produced by the muscles. These studies, in general, have not examined how changes of muscle moment arms and muscle lengths affect their force and moment-generating capacities. It is yet not cl
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