6,406 research outputs found
RECONSTRUCTION OF PATIENT-SPECIFIC TIBIOFEMORAL JOINT ARTICULATIONS FROM MARKER TRAJECTORIES AND ANTHROPOMETRICS
No full textPatient-specific modelling through incorporating magnetic resonance imaging (MRI) improves biofidelity with respect to articulations, particularly at the knee [1]. However, these models can be both labour and time intensive, and access to MRI is not possible for all researchers. Principal component analysis (PCA) has been used to facilitate the reconstruction of articular surface features from existing morphology in adults [2]. The purpose of this research was to determine if patient-specific articulations of the tibiofemoral joint (TFJ) could be reconstructed from marker positions and anthropometrics in paediatric knees
DEVELOPMENT OF A CONGRUENCE-BASED MUSCULOSKELETAL MODEL OF THE KNEE IN ANTERIOR CRUCIATE LIGAMENT INJURED ADOLESCENTS
No full textAnterior cruciate ligament (ACL) injury rates are rising in adolescent populations [1]. To understand how an individual’s joint morphology dictates their motion patterns, researchers have developed patient-specific musculoskeletal models using medical images of the tibiofemoral joint (TFJ) to study ACL injuries [2]. In particular, congruence-based modelling optimizes the configuration of the tibiofemoral joint to reduce pressure during movement [3], mimicking the mechanotransduction properties of articular cartilage [4]. However, these models have predominantly been constructed using adult knees, and it is unclear if patient-specific models can be built for populations undergoing pubertal development. Therefore, the purpose of this research is to build a patient-specific knee model for modelling passive knee joint motion during adolescence
Award winning author, journalist Daniel L. Coberly to Speak
No full textTollefson, Elizabeth. (2018). Award winning author, journalist Daniel L. Coberly to Speak. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/224033
DEVELOPMENT OF A CONGRUENCE-BASED MUSCULOSKELETAL MODEL OF THE KNEE IN ANTERIOR CRUCIATE LIGAMENT INJURED ADOLESCENTS
No full textAnterior cruciate ligament (ACL) injury rates are rising in adolescent populations [1]. In order to better understand how an individual’s joint morphology dictates their motion patterns, researchers have developed patient-specific musculoskeletal models using medical images of the tibiofemoral joint (TFJ) to study ACL injuries [2]. In particular, congruence-based modelling optimizes the configuration of the tibiofemoral joint to reduce pressure during movement [3], mimicking the mechanotransduction properties of articular cartilage [4]. However, these models have predominantly been constructed using adult knees, and it is unclear if patient-specific models can be developed for a growing population. Therefore, the purpose of this research is to build a patient-specific knee model for modelling passive knee joint motion during adolescence
Report on Meteorological Research March 1, 1935 (m-1)
No full textThe object of the report was to elucidate in detail the various features of the research program in meteorology being carried on at the Daniel Guggenheim Airship Institute in Akron, Ohio. Mr. L. J. Fangman, of the U.S. Weather Bureau, was collaborating with the author in carrying out work such as a study of autographic records of the various meteorological elements during frontal passages with a view to the possible prediction of the intensity of the accompanying disturbance as it may affect the operation of aircraft and a study of atmospheric gustiness with a view to finding the dependence between frequency end amplitude of velocity fluctuations and the vertical temperature and velocity gradients
La Figure de la maison dans trois romans franco-canadiens contemporains
No full text"Ce mémoire étudie la figure de la maison dans trois romans franco-canadiens contemporains : La maison habitée (2014) de Geneviève Lévesque, La maison. Une parabole (2009) de Daniel Soha et La maison-mémoire (2007) de Sandra Rompré-Deschênes. Dans ces trois romans, un personnage souvent seul se retrouve dans une maison qui devient pour lui une prison, un bateau ou encore un labyrinthe. Le préconstrit de l'espace devient plus signifiant que le temps, les personnages ou les actions. Sur le plan théorique, nous avons appliqué l'herméneutique des espaces fictionnels de Benoit Doyon-Gosselin. Cette approche lie les trois concepts centraux de l'herméneutique (compréhension, explication et interprétation) à trois concepts spatiaux (les figures spatiales, la configuration et la refiguration spatiale). L'analyse des espaces fictionnels de Benoit Doyon-Gosselin nous oriente à mieux comprendre et interpréter les particularités des maisons mises en scène. L'analyse de la maison dans les trois romans retenus montre que le préconstruit de l'espace peut jouer un rôle signifiant dans la fiction."--Résumé.statement of responsibility: Hamed Mahaman Arouna."Thèse présentée pour satisfaire aux exigences de la maîtrise ès arts (études littéraires)".thesis: M. A. (études littéraires) Université de Moncton 2017bibliography: Comprend des références bibliographiques : feuilles 73-74.additional physical form: Également disponible en version électronique. Les pages contenant des informations personnelles ne sont pas reproduites
Supplemental Material, sj-pdf-1-ojs-10.1177_23259671231154540 - Criteria Used to Determine Unrestricted Return to Activity After ACL Reconstruction in Pediatric and Adolescent Patients: A Systematic Review
No full textSupplemental Material, sj-pdf-1-ojs-10.1177_23259671231154540 for Criteria Used to Determine Unrestricted Return to Activity After ACL Reconstruction in Pediatric and Adolescent Patients: A Systematic Review by Nicholas J. Romanchuk, Holly Livock, Kenneth J. Lukas, Michael J. Del Bel, Daniel L. Benoit and Sasha Carsen in Orthopaedic Journal of Sports Medicine</p
Motion analysis of the knee : kinematic artifacts, EMG normalisation and joint forces
No full textThe non-contact anterior cruciate ligament (ACL) injury is the most common and serious debilitating knee joint injury in male and female athletes. To create an ACL injury paradigm that will lead to improved treatment and prevention it is necessary to understand how ACL injuries occur. Currently this information is lacking for reasons such as differing methodologies used in studies of neuromuscular control of the leg muscles, lack of information related to the role of sports equipment in affecting knee joint forces, and insufficient measurement accuracy of 3D knee joint kinematics.The aim of this thesis is to address some of these issues by: (1) evaluating techniques of electromyography (EMG) analysis with ACL patients; (2) investigating the contribution of sports equipment to reducing knee joint forces in skiing; (3) assessing the accuracy of non-invasive motion analysis techniques in measuring true bone motion and verifying techniques to improve the accuracy.We identified that EMG normalisation methods would significantly affect the ability to detect neuromuscular alterations between injured and non-injured leg muscles in ACL injured subjects. We found that clinical outcome measures of neuromuscular control were dependant on normalisation and that the MVC method was most sensitive at detecting injured to non-injured limb neuromuscular alterations. We also provided evidence of reduced gastrocnemius muscle activity in ACL injured patients. We found that the release and rotation of the ski boot cuff both increased knee joint compressive force and reduced anterior shear force. The important role of sports equipment in contributing to injury prevention was established.Finally, by measuring in-vivo tibio-femoral motion and comparing it with noninvasive skin marker techniques we found average rotation errors of 4.4 degrees and 13.1 degrees and translation errors of 13.0 and 16.1 mm for rotations during walking and cutting respectively. Skin markers did not accurately reflect tibio-femoral joint motion. The error introduced due to skin movement artifact affected both the magnitude and direction of reported tibio-femoral motions during the walk and cut. Although we were not able to improve the measured kinematics by reducing intermarker movements, we have proposed a standard error of measurement to be used when reporting knee joint motion data in the future. We believe that the content of this thesis provides a solid foundation from which to build an ACL injury paradigm and provides insight into factors associated with performing motion analysis of the knee.List of scientific papersI. Benoit DL, Lamontagne M, Cerulli G, Liti A (2003). The clinical significance of electromyography normalisation techniques in subjects with anterior cruciate ligament injury during treadmill walking. Gait Posture. 18(2): 56-63. https://doi.org/10.1016/S0966-6362(02)00194-7 II. Benoit DL, Lamontagne M, Greaves C, Liti A, Cerulli G (2005). Effect of alpine ski boot cuff release on knee joint force during the backward fall. [Submitted]III. Ramsey DK, Wretenberg PF, Benoit DL, Lamontagne M, Nemeth G (2003). Methodological concerns using intra-cortical pins to measure tibiofemoral kinematics. Knee Surg Sports Traumatol Arthrosc. 11(5): 344-9. https://doi.org/10.1007/s00167-003-0388-1 IV. Benoit DL, Ramsey D, Lamontagne M, Xu L, Wretenberg P, Renstrom P (2005). Effect of skin movement artefact on knee kinematics during gait and cutting motions measured in-vivo. [Accepted] https://doi.org/10.1016/j.gaitpost.2005.04.012 V. Benoit DL, Ramsey D, Lamontagne M, Xu L, Renstrom P (2005). Can surface markers optimisation reduce skin movement during gait and cutting motions. [Manuscript]</p
Nebraska Lawyer
No full textDerived from the similarly-titled Creighton Law Review article by this author (39 Creighton L. Rev. 29 (2005)), this article focuses on a discussion of techniques for more effective appellate advocacy, including more effective written advocacy (brief writing) and more effective oral advocacy (oral arguments).5-1
Method of thermally glazing an article, U.S. Patent 6,127,005
No full textCoating and filler materials for localized thermal processing of glazed ceramics and other brittle and low thermal conductivity materials. The coating materials include oxide compositions that exhibit coefficients of thermal expansion which are less than about 8×10-6 /° C. and glass transition temperatures which are less than about 400° C. The filler materials include particulate oxide materials which do not substantially react during localized thermal processing of glazed ceramics and other brittle and low thermal conductivity materials. The coating and filler materials are useable together as a composite material for repairing cavities having depths greater than about 2 mm
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