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Littérature scientifique sur le sujet « Body metric »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 31 juillet 2025

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Articles de revues sur le sujet "Body metric"

Park, F. C. "Distance Metrics on the Rigid-Body Motions with Applications to Mechanism Design." Journal of Mechanical Design 117, no. 1 (1995): 48–54. http://dx.doi.org/10.1115/1.2826116.

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In this article we examine the problem of designing a mechanism whose tool frame comes closest to reaching a set of desired goal frames. The basic mathematical question we address is characterizing the set of distance metrics in SE(3), the Euclidean group of rigid-body motions. Using Lie theory, we show that no bi-invariant distance metric (i.e., one that is invariant under both left and right translations) exists in SE(3), and that because physical space does not have a natural length scale, any distance metric in SE(3) will ultimately depend on a choice of length scale. We show how to constr

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Martinez, J. M. R., and J. Duffy. "On the Metrics of Rigid Body Displacements for Infinite and Finite Bodies." Journal of Mechanical Design 117, no. 1 (1995): 41–47. http://dx.doi.org/10.1115/1.2826115.

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This paper presents a critical analysis of the metric of rigid body displacements obtained from the so-called kinematic mapping. It is shown that this metric is not suitable for finite rigid bodies. The paper also addresses the metrics obtained for the planar group, as it can be regarded as a subgroup of the group of all rigid body displacements, which is denoted here as the Euclidean group. Finally, the paper proposes some metrics for the set of spatial and planar displacements for a finite rigid body, undergoing a finite displacement.

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Seo, Min-Hee, Jeh-Kwang Ryu, Byung-Cheol Kim, Sang-Bin Jeon, and Kyoung-Min Lee. "Persistence of metric biases in body representation during the body ownership illusion." PLOS ONE 17, no. 7 (2022): e0272084. http://dx.doi.org/10.1371/journal.pone.0272084.

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Our perception of the body’s metric is influenced by bias according to the axis, called the systematic metric bias in body representation. Systematic metric bias was first reported as Weber’s illusion and observed in several parts of the body in various patterns. However, the systematic metric bias was not observed with a fake hand under the influence of the body ownership illusion during the line length judgment task. The lack of metric bias observed during the line length judgment task with a fake hand implies that the tactile modality occupies a relatively less dominant position than percep

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SAMPSON, GEOFFREY, and ANNA BABARCZY. "A test of the leaf-ancestor metric for parse accuracy." Natural Language Engineering 9, no. 4 (2003): 365–80. http://dx.doi.org/10.1017/s1351324903003243.

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The GEIG metric for quantifying the accuracy of parsing became influential through the Parseval programme, but many researchers have seen it as unsatisfactory. The Leaf-Ancestor (LA) metric, first developed in the 1980s, arguably comes closer to formalizing our intuitive concept of relative parse accuracy. We support this claim via an experiment that contrasts the performance of alternative metrics on the same body of automatically-parsed examples. The LA metric has the further virtue of providing straightforward indications of the location of parsing errors.

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Eberharter, Johannes K., and Bahram Ravani. "Local Metrics for Rigid Body Displacements." Journal of Mechanical Design 126, no. 5 (2004): 805–12. http://dx.doi.org/10.1115/1.1767816.

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One hundred years ago, Eduard Study introduced a very elegant method to describe a rigid body displacement in three-space. He mapped each position of a rigid body onto a point on a quadric, now called the Study quadric. This quadric is a six-dimensional rational hyper-surface, embedded in a seven-dimensional projective real space, called Study’s soma space. More than half a century later Ravani and Roth reconfigured Study’s soma space into a three-dimensional dual projective space, and defined a geometric metric for rigid body displacements. Here, approximately 20 years later, we again use Stu

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Frutos-Alfaro, Francisco, Edwin Retana-Montenegro, Iván Cordero-García, and Javier Bonatti-González. "Metric of a Slow Rotating Body with Quadrupole Moment from the Erez-Rosen Metric." International Journal of Astronomy and Astrophysics 03, no. 04 (2013): 431–37. http://dx.doi.org/10.4236/ijaa.2013.34051.

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Peviani, Valeria, Francesca Giulia Magnani, Gabriella Bottini, and Lucia Melloni. "Metric biases in body representation extend to objects." Cognition 206 (January 2021): 104490. http://dx.doi.org/10.1016/j.cognition.2020.104490.

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Fedosin, Sergey G. "The relativistic uniform model: the metric of the covariant theory of gravitation inside a body." St. Petersburg Polytechnical State University Journal. Physics and Mathematics (Научно-технические ведомости СПбГПУ. Физико-математические науки) 14, no. 3 (2021): 168–84. https://doi.org/10.18721/JPM.14313.

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It is shown that the sum of stress-energy tensors of the electromagnetic and gravitational fields, the acceleration field and the pressure field inside a stationary uniform spherical body within the framework of relativistic uniform model vanishes. This fact significantly simplifies solution of equation for the metric in covariant theory of gravitation (CTG). The metric tensor components are calculated inside the body, and on its surface they are combined with the components of external metric tensor. This also allows us to exactly determine one of the two unknown coefficients in the metric ou

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Fedosin, Sergey G. "The Metric outside a Fixed Charged Body in the Covariant Theory of Gravitation." International Frontier Science Letters 1 (July 2014): 41–46. http://dx.doi.org/10.18052/www.scipress.com/ifsl.1.41.

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The metric outside a charged body is calculated. As part of the given approach it is shown that the gravitational and electromagnetic fields are equally involved in the formation of the metric tensor components. Andthe contribution of fields in the metric is proportional to the energy of these fields. From equations for the metric it follows that the metric tensor components are determined up to two constants.

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Fedosin, Sergey G. "The Metric Outside a Fixed Charged Body in the Covariant Theory of Gravitation." International Frontier Science Letters 1, no. 1 (2014): 41–46. https://doi.org/10.18052/www.scipress.com/ifsl.1.41.

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The metric outside a charged body is calculated. As part of the given approach it is shown that the gravitational and electromagnetic fields are equally involved in the formation of the metric tensor components. And the contribution of fields in the metric is proportional to the energy of these fields. From equations for the metric it follows that the metric tensor components are determined up to two constants.

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Thèses sur le sujet "Body metric"

PEVIANI, VALERIA CARMEN. "Metric biases in body and object representations." Doctoral thesis, Università degli studi di Pavia, 2020. http://hdl.handle.net/11571/1329171.

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The dimensions and proportion of our body parts are typically misestimated. For instance, the hand is perceived as distorted, with its width overrepresented compared to its length. Even though we misperceive its shape and dimensions, our hand is the protagonist of extremely accurate fine movements, as well as the means by which we sense the world. This thesis is organised into two chapters. The first one describes two studies aimed at investigating the role of the biased representation of the hand in motor planning and execution. In Study 1, we provided evidence in support of the hypothesis

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Criales, Escobar Luis Ernesto. "Development of a Velocity Metric for Rigid-Body Planar Motion." [Milwaukee, Wis.] : e-Publications@Marquette, 2009. http://epublications.marquette.edu/theses_open/4.

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SPOSITO, AMBRA VALENTINA. "The spatial metric representation of body parts: behavioural and neuropsychological evidence." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2011. http://hdl.handle.net/10281/20101.

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The mental representation of the body is being a subject of intensive research from different perspectives starting from the 20th Century. Indeed, the body is a peculiar object for the brain, being at the same time a physical, space-occupying object and the critical mean for perception and action in the world around us. The present doctoral work focussed on the spatial representation of the body; in particular it was investigated whether the body holds a specific metric representation, which is supposed to be useful for action programming and interaction with the environment, as introduced in

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GIURGOLA, SERENA. "PLASTIC MODULATIONS OF THE BODY METRIC REPRESENTATION: NEUROPHYSIOLOGICAL AND BEHAVIORAL EVIDENCE." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2020. http://hdl.handle.net/10281/261947.

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La conoscenza della grandezza delle proprie parti corporee è essenziale per muoversi in maniera efficiente nell’ambiente esterno e per interagire accuratamente sia con gli oggetti sia con le altre persone. Attraverso un approccio interdisciplinare che combina paradigmi neurofisiologici (stimolazione cerebrale non invasiva) e comportamentali, la presente tesi indaga i meccanismi cognitivi e neurali sottostanti la rappresentazione della grandezza delle parti corporee. Lo Studio #1 dimostra il ruolo causale della corteccia somatosensoriale primaria nell’elaborazione della grandezza delle proprie

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TOSI, GIORGIA. "How embodiment shapes our perception: evidence of body and space." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2020. http://hdl.handle.net/10281/277383.

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Una grande varietà di input sensoriali dal mondo e dal corpo, sono continuamente integrati nel cervello al fine di creare rappresentazioni mentali sovramodali e coerenti del nostro stesso corpo. La plasticità è una caratteristica fondamentale di tali rappresentazioni, che consente costanti cambiamenti adattativi nelle funzioni mentali e nel comportamento. Anche le rappresentazioni corporee possono cambiare in base all'esperienza e, soprattutto, possono essere temporaneamente modificate mediante protocolli sperimentali. Nel presente lavoro, eravamo interessati a valutare la plasticità della per

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Tsitsoulis, Athanasios. "A Methodology for Extracting Human Bodies from Still Images." Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1389793781.

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Averkov, Gennadiy. "Metrical Properties of Convex Bodies in Minkowski Spaces." Doctoral thesis, Universitätsbibliothek Chemnitz, 2004. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200401537.

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The objective of this dissertation is the application of Minkowskian cross-section measures (i.e., section and projection measures in finite-dimensional linear normed spaces over the real field) to various topics of geometric convexity in Minkowski spaces, such as bodies of constant Minkowskian width, Minkowskian geometry of simplices, geometric inequalities and the corresponding optimization problems for convex bodies. First we examine one-dimensional Minkowskian cross-section measures deriving (in a unified manner) various properties of these measures. Some of these properties are extensions

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Al-Bairuty, Genan Adnan. "Histopathological effects of metal and metalic nanoparticles on the body systems of rainbow trout (Oncorhynchus mykiss)." Thesis, University of Plymouth, 2013. http://hdl.handle.net/10026.1/2879.

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Histopathology studies of metal nanoparticles (NPs) compared to traditional forms of metal in fish are scarce. Additionally, it is unclear whether metal nanoparticles cause greater or different pathologies compared to other forms of metal. The current study aimed to assess the pathological effects of Cu-NPs and TiO2 NPs on rainbow trout via various routes of exposure and, where appropriate, to compare them to either the equivalent dissolved metal salts or bulk powder forms. The first experiment showed that waterborne exposure to Cu-NPs and CuSO4 caused similar types of organ pathologies and al

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Arbués, Sangüesa Adrià. "A journey of computer vision in sports: from tracking to orientation-base metrics." Doctoral thesis, Universitat Pompeu Fabra, 2021. http://hdl.handle.net/10803/672785.

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Although tracking data have completely revolutionized the whole data science paradigm in sports competitions with the largest economic resources, its use in a European context is still unexplored. In this thesis, three tracking-related contributions are presented in the sports domain. First, the creation of vision-based basketball multi-tracking methods is studied from a single-camera perspective, which could be useful for clubs with low resources or for the recovery of vintage games’ tracking. Then, tracking data in the soccer domain is enriched by adding a novel layer of information: p

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Motta, Ilse Sodré da [UNESP]. "Índice de contaminação: novo parâmetro para análise de metais e de pesticidas no sangue materno e do cordão umbilical." Universidade Estadual Paulista (UNESP), 2014. http://hdl.handle.net/11449/124030.

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Made available in DSpace on 2015-06-17T19:34:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-04-10. Added 1 bitstream(s) on 2015-06-18T12:48:29Z : No. of bitstreams: 1 000824265.pdf: 1213962 bytes, checksum: 8b204b4b696a18e9ab2a59159641a9b3 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>A exposição a metais e pesticidas presentes no meio ambiente apresenta efeitos prejudiciais à saúde da população. Em especial, mulheres grávidas e fetos em desenvolvimento apresentam maiores riscos. O presente estudo foi delineado para avaliar o índice de contaminaçã

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Livres sur le sujet "Body metric"

Mark, Fuerst, ed. Tone-a-metrics: The bedroom body shape-up. Pocket Books, 1994.

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Sepowski, Stephen J., ed. The Ultimate Hint Book. The Ultimate Game Club Ltd., 1991.

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Inc, Game Counselor. Game Counselor's Answer Book for Nintendo Players. Microsoft Pr, 1991.

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Inc, Game Counsellor, ed. The Game Counsellor's answer book for Nintendo Game players: Hundredsof questions -and answers - about more than 250 popular Nintendo Games. Microsoft Press, 1991.

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Rajeev, S. G. Curvature and Instability. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198805021.003.0011.

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The Euler equations of a rigid body can be understood as the geodesic equations for a metric on the rotation group. A rapid introduction to the Riemannian geometry of Lie groups (following Milnor) is given and illuminated by the example of the rigid body. The deep generalization of Arnold to the case of an incompressible fluid is then explained. The Euler equations of an ideal incompressible fluid are shown to be geodesics of the group of volume preserving diffeomorphisms. The curvature of this metric is calculated. Contrary to the case of the rigid body, the curvature is negative, implying th

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Scribble, 2. Book for Automotive Body Repairers - Pro Series One: 150-Page Lined Work Decor for Professionals to Write in, with Individually Numbered Pages and Metric/Imperial Conversion Charts. Vibrant and Glossy Color Cover. Independently Published, 2019.

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Soghier, Lamia, Katherine Pham, and Sara Rooney, eds. Reference Range Values for Pediatric Care. American Academy of Pediatrics, 2014. http://dx.doi.org/10.1542/9781581108545.

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Here’s the one place to look for normal values and related need-to-know data! Now you no longer have to search through multiple resources for reference ranges and other critical values you need to optimize patient assessment and management. The new Reference Range Values for Pediatric Care brings all the most vital range data - plus diverse clinical evaluation and calculation tools - all together in one concise, compact handbook. Indispensable pediatric reference ranges - right at your fingertips Custom-designed for today’s busy practitioners, this quick-access resource provides commonly used

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Deruelle, Nathalie, and Jean-Philippe Uzan. The post-Newtonian approximation. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198786399.003.0052.

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This chapter embarks on a study of the two-body problem in general relativity. In other words, it seeks to describe the motion of two compact, self-gravitating bodies which are far-separated and moving slowly. It limits the discussion to corrections proportional to v2 ~ m/R, the so-called post-Newtonian or 1PN corrections to Newton’s universal law of attraction. The chapter first examines the gravitational field, that is, the metric, created by the two bodies. It then derives the equations of motion, and finally the actual motion, that is, the post-Keplerian trajectories, which generalize the

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Rajeev, S. G. Hamiltonian Systems Based on a Lie Algebra. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198805021.003.0010.

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There is a remarkable analogy between Euler’s equations for a rigid body and his equations for an ideal fluid. The unifying idea is that of a Lie algebra with an inner product, which is not invariant, on it. The concepts of a vector space, Lie algebra, and inner product are reviewed. A hamiltonian dynamical system is derived from each metric Lie algebra. The Virasoro algebra (famous in string theory) is shown to lead to the KdV equation; and in a limiting case, to the Burgers equation for shocks. A hamiltonian formalism for two-dimensional Euler equations is then developed in detail. A discret

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Joseph-Armstrong, Helen, and Susan P. Ashdown. Draping for Apparel Design. 4th ed. Bloomsbury Publishing Inc, 2022. http://dx.doi.org/10.5040/9781501315169.

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Draping for Apparel Design, Fourth Edition is the fully updated and revised edition of the seminal book pioneered by fashion education luminary Helen Joseph-Armstrong. This comprehensive guide provides step-by-step instruction for the beginning patternmaker and advanced techniques for the more experienced. Maintaining the vast array of examples and the book’s easy-to-read style, revising author Susan Ashdown reflects current industry standards, both metric and imperial measurements, images of diverse body types, and information about half scale forms. New material on jackets, coats, and loose-

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Chapitres de livres sur le sujet "Body metric"

Proffitt, Dennis R., Sally A. Linkenauger, Lisa P. Y. Lin, and Rachael L. Taylor. "Body scaling of visually perceived metric space." In The Routledge Handbook of Bodily Awareness. Routledge, 2022. http://dx.doi.org/10.4324/9780429321542-37.

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Schwarzer, Norbert. "The Metric Dirac Equation Revisited and the Geometry of Spinors." In The Math of Body, Soul, and the Universe. Jenny Stanford Publishing, 2022. http://dx.doi.org/10.1201/9781003334545-17.

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Rogg, Maria. "Twists of the smart body." In Atlas der Datenkörper 2. transcript Verlag, 2024. http://dx.doi.org/10.14361/9783839470862-021.

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In critical data studies, biometric AI is commonly recognized as a mechanism of exclusion (cf. e.g., Amoore, 2006; Gates, 2011). The technology which is "built to measure life" (Ajana, 2013) processes digital representations of biological data in order to identify and authenticate individuals. Founded on the ideology and governmentality of dataism (van Dijck, 2014), the datafication of embodied identity reduces existence to discrete measurable results, within an imaginary of data as a source of unlimited knowledge. In search of a queer counter narrative of biometrics, this paper presents a phi

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Lopez, Gary C. "The Body Count Dilemma." In Safety Metrics for the Modern Safety Professional. CRC Press, 2020. http://dx.doi.org/10.1201/9781003088332-3.

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Lemdiasov, Rosti, Arun Venkatasubramanian, and Ranga Jegadeesan. "Estimating Electric Field and SAR in Tissue in the Proximity of RF Coils." In Brain and Human Body Modeling 2020. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45623-8_18.

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AbstractMedical implants that require recharging typically use magnetic resonant coupling of transmit (external) and receive (internal) RF coils. Apart from magnetic field, the transmit coil creates a time-varying electric field that excites currents not only in the receive coil but also in the surrounding tissues. Radio frequency (RF) exposure assessment for inductive systems used in wireless powering and telemetry is done using electric field, specific absorption rate (SAR), and induced current as metrics. Full-wave analysis using RF simulation tools such as Ansys HFSS is generally used to e

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Gautam, Pragati, and Swapnil Verma. "Results on interpolative Boyd-Wong contraction in quasi-partial b-metric space." In Advances in Mathematical Analysis and its Applications. Chapman and Hall/CRC, 2022. http://dx.doi.org/10.1201/9781003330868-9.

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Larochelle, Pierre, and Venkatesh Venkataramanujam. "An Improved Principal Coordinate Frame for use with Spatial Rigid Body Displacement Metrics." In Advances in Mechanism and Machine Science. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-20131-9_32.

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Wartner-Attarzadeh, Talieh. "Suffering Bodies, Relieved Souls." In Musik und Klangkultur. transcript Verlag, 2023. http://dx.doi.org/10.14361/9783839458914-013.

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Laṭmiyeh is a commemorative Shia women ritual, which is practiced by Iranian-Arab-Shia women from the southwestern- Iranian province of Khuzestan. This mourning ritual is combined with metrical singing, body movements and self-flagellation. Despite its sad lyrics and context, laṭmiyeh has an energetic sound atmosphere, one that resembles joyful celebrations from the region. Powerful flagellations in this vocal performance replace percussion and strengthen the rhythmic ambience of the songs, even though they are unpleasant and painful acts for their practitioners. This article investigates the

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Klingner, Mathias, Sven Hellbach, Martin Riedel, Marika Kaden, Thomas Villmann, and Hans-Joachim Böhme. "RFSOM – Extending Self-Organizing Feature Maps with Adaptive Metrics to Combine Spatial and Textural Features for Body Pose Estimation." In Advances in Self-Organizing Maps and Learning Vector Quantization. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07695-9_15.

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Ball, Adrian, John Zigman, Arman Melkumyan, Anna Chlingaryan, Katherine Silversides, and Raymond Leung. "Addressing Application Challenges with Large-Scale Geological Boundary Modelling." In Springer Proceedings in Earth and Environmental Sciences. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-19845-8_17.

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AbstractFor banded iron formation-hosted deposits accurate boundary modelling is critical to ore-grade estimation. Key to estimation fidelity is the accurate separation of the different domains within the ore body, requiring modelling of the boundaries between domains. This yields both theoretical and application challenges. We present a series of solutions for application challenges that arise when modelling large-scale boundaries employing a composition of Gaussian Process models on exploration and production hole data. We demonstrate these in the banded iron formation-hosted iron ore deposi

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Actes de conférences sur le sujet "Body metric"

Sheflin, Jessie M., Claire C. Onsager, and Matthew A. Grayson. "Resolution Maps: A Novel Metric for Electrical Impedance Tomography." In 2024 IEEE 20th International Conference on Body Sensor Networks (BSN). IEEE, 2024. https://doi.org/10.1109/bsn63547.2024.10780667.

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Wang, Jing-Chun, Woan-Shiuan Chien, Huan-Yu Chen, and Chi-Chun Lee. "In-The-Wild HRV-Based Stress Detection Using Individual-Aware Metric Learning." In 2024 IEEE 20th International Conference on Body Sensor Networks (BSN). IEEE, 2024. https://doi.org/10.1109/bsn63547.2024.10780546.

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Liu, Chuhui, Alexander Gherardi, Huining Li, Jun Xia, and Wenyao Xu. "A Low-Cost Embedded Imaging System for Low-Limb Vascular Metrics Monitoring." In 2024 IEEE 20th International Conference on Body Sensor Networks (BSN). IEEE, 2024. https://doi.org/10.1109/bsn63547.2024.10780688.

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Ribera, Anna Blasi, Ethan McCormick, Sarah Lloyd-Fox, and The BRIGHT Project team. "Participant brain activation metrics with Independent Component Analysis (ICA) with infant fNIRS." In Bio-Optics: Design and Application. Optica Publishing Group, 2025. https://doi.org/10.1364/boda.2025.dth1a.3.

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In studies of neurocognitive development in global health, it is necessary to integrate summary metrics of brain activation with contextual information. We propose Independent Component Analysis (ICA) to calculate these summary metrics, with promising results.

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Chirikjian, Gregory S. "Convolution Metrics for Rigid Body Motion." In ASME 1998 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/detc98/mech-5899.

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Abstract Recently, the importance of metrics on the group of rigid body motions has been addressed in a number of works in the kinematics and robotics literature. This paper defines a new kind of metric on motion which is particularly easy to compute. It is shown how this metric is applicable to path generation for rigid body motions.

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Larochelle, Pierre M., and Andrew P. Murray. "Projection Metrics for Rigid-Body Displacements." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84698.

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An open research question is how to define a useful metric on SE(n) with respect to (1) the choice of coordinate frames and (2) the units used to measure linear and angular distances. We present two techniques for approximating elements of the special Euclidean group SE(n) with elements of the special orthogonal group SO(n+1). These techniques are based on the singular value and polar decompositions (denoted as SVD and PD respectively) of the homogeneous transform representation of the elements of SE(n). The projection of the elements of SE(n) onto SO(n+1) yields hyperdimensional rotations tha

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Venkataramanujam, Venkatesh, and Pierre Larochelle. "A Displacement Metric for Finite Sets of Rigid Body Displacements." In ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/detc2008-49554.

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There are various useful metrics for finding the distance between two points in Euclidean space. Metrics for finding the distance between two rigid body locations in Euclidean space depend on both the coordinate frame and units used. A metric independent of these choices is desirable. This paper presents a metric for a finite set of rigid body displacements. The methodology uses the principal frame (PF) associated with the finite set of displacements and the polar decomposition to map the homogenous transform representation of elements of the special Euclidean group SE(N-1) onto the special or

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Žefran, Miloš, Vijay Kumar, and Christopher Croke. "Choice of Riemannian Metrics for Rigid Body Kinematics." In ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/mech-1148.

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Abstract The set of spatial rigid body motions forms a Lie group known as the special Euclidean group in three dimensions, SE(3). Chasles’s theorem states that there exists a screw motion between two arbitrary elements of SE(3). In this paper we investigate whether there exist a Riemannian metric whose geodesics are screw motions. We prove that no Riemannian metric with such geodesics exists and we show that the metrics whose geodesics are screw motions form a two-parameter family of semi-Riemannian metrics.

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Araya-Polo, M., and Y. Sun. "SASI: a metric for Salt Body Reconstruction." In Second EAGE Workshop on Machine Learning. European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.202132015.

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Schimmels, Joseph M., and Luis E. Criales. "A Computationally Efficient Planar Rigid Body Distance Metric." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-11585.

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A means of assessing the quality of a given rigid body configuration relative to a desired position and orientation is developed. Here, the assessment is based on the desired positions of all particles that constitute the body. This measure of quality has previously been shown to meet the mathematical requirements of a metric. This metric, however, has been largely dismissed in practical application due to the difficulty in performing its calculation. This paper describes procedures to efficiently calculate this metric for planar positioning problems. A method of obtaining an analytical formul

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Rapports d'organisations sur le sujet "Body metric"

White, Rickie, Carl Nordman, Lindsey Smart, et al. Forest vegetation monitoring protocol for the Cumberland Piedmont Network: Protocol Narrative?Version 2.1. National Park Service, 2024. http://dx.doi.org/10.36967/2302353.

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In 2003, ?vegetation communities? were selected as one of the highest priority vital signs of importance across the Cumberland Piedmont Network (CUPN) parks (Leibfreid et al. 2005). The protocol described in this document will address all aspects of monitoring this vital sign. The primary monitoring goal is to assess status and trends of ecological health for park forest vegetation communities, including key communities of management concern where possible. By assessing status and trends for key metrics, we can obtain a more complete picture of the status of forest vegetation communities in th

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Kurimo-Beechuk, Elizabeth, Michael Byrne, and Wendy Wright. Landbird community monitoring at Cumberland Island National Seashore: 2012 data summary. National Park Service, Natural Resource Stewardship and Science, 2016. https://doi.org/10.36967/2228030.

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Birds are an important component of park ecosystems. Due to their high body temperature, rapid metabolism, and high ecological position in most food webs, birds are also good indicators of the effects of local and regional ecosystem changes. Patterns in the community composition, distribution, and occurrence of breeding birds provide a metric for assessing ecological integrity and sustainability in southeastern U. S. ecosystems. Further, trends in these attributes in relation to activities occurring at Cumberland Island National Seashore (e.g., management actions, natural disturbance, invasive

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Kurimo-Beechuk, Elizabeth, Michael Byrne, and Wendy Wright. Landbird community monitoring at Fort Sumter National Monument: 2012 data summary. National Park Service, Natural Resource Stewardship and Science, 2016. https://doi.org/10.36967/2228028.

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Birds are an important component of park ecosystems. Due to their high body temperature, rapid metabolism, and high ecological position in most food webs, birds are also good indicators of the effects of local and regional ecosystem changes. Patterns in the community composition, distribution, and occurrence of breeding birds provide a metric for assessing ecological integrity and sustainability in southeastern U.S. ecosystems. Further, trends in these attributes in relation to activities occurring at Fort Sumter National Monument (e.g., management actions, natural disturbance, invasive-specie

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Dinger, Eric, and Eric Dinger. Analysis of stream types in Klamath Network parks based on physical habitat and chemical characters. National Park Service, 2024. http://dx.doi.org/10.36967/2306085.

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This is the first ?Analysis and Synthesis? report required by the Klamath Inventory and Monitoring Network?s stream monitoring protocol. This report synthesizes the physical and chemical attributes of streams surveyed by the Klamath Network between 2011 and 2018 in the following parks: Crater Lake National Park, Lassen Volcanic National Park, Whiskeytown National Recreation Area, Redwood National and State Parks, and Oregon Caves National Monument and Preserve). Where possible, it categorizes individual streams into groups using multivariate exploratory analyses and assigns statistical signifi

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Lies. L52009 Guidelines for Assessing Corrosion Associated with Seam and Girth Welds. Pipeline Research Council International, Inc. (PRCI), 2008. http://dx.doi.org/10.55274/r0011171.

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Guidelines for the use of pipe-body-based corrosion assessment criteria in applications to weld seams have been developed in terms of specific metrics that address the line pipe properties, the pipelines loadings and service conditions, and the nature of the corrosion and a flowchart has been developed to implement these metrics. the guidelines have been validated by the available full-scale tests, laboratory tests, and in-service failures involving corrosion on weld seams, for both girth welds and longitudinal seams. In all cases, the guidelines have been validated, although for some applicat

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Hales, Craig M., David Freedman, Lara Akinbami, Rong Wei, and Cynthia Ogden. Evaluation of alternative body mass index (BMI) metrics to monitor weight status in children and adolescents with extremely high BMI using CDC BMI-for-age growth charts. National Center for Health Statistics (U.S.), 2022. http://dx.doi.org/10.15620/cdc:121711.

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Walters, Kristen, and Auston Chhor. Exploring modes of funding and governance for the Lower Fraser River. Raincoast Conservation Foundation, 2024. http://dx.doi.org/10.70766/3.83528.

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The Fraser River is a legacy to the economic, cultural, and ecological backbone of British Columbia. Draining more than a quarter of the province and supporting one of the largest Pacific salmon runs in the world, it is a globally renowned river. The Lower Fraser, defined as the ecoregion between Yale, BC and Metro Vancouver, contains some of the most important spawning and rearing habitat along the entire river. Decades of development have left the Lower Fraser facing numerous challenges, including extensive habitat loss, flooding, and water pollution. There is no comprehensive funding or man

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Ray, Laura, Madeleine Jordan, Steven Arcone, et al. Velocity field in the McMurdo shear zone from annual ground penetrating radar imaging and crevasse matching. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42623.

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The McMurdo shear zone (MSZ) is strip of heavily crevassed ice oriented in the south-north direction and moving northward. Previous airborne surveys revealed a chaotic crevasse structure superimposed on a set of expected crevasse orientations at 45 degrees to the south-north flow (due to shear stress mechanisms). The dynamics that produced this chaotic structure are poorly understood. Our purpose is to present our field methodology and provide field data that will enable validation of models of the MSZ evolution, and here, we present a method for deriving a local velocity field from ground pen

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Mehmood, Hamid. Bibliometrics of Water Research: A Global Snapshot. United Nations University Institute for Water, Environment and Health, 2019. http://dx.doi.org/10.53328/eybt8774.

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This report examines the various dimensions of global water-related research over the 2012-2017 period, using extensive bibliographic data. The review covers trends in water-related publications and citations, the relative importance of water-related research in the overall body of scientific research, flows of water-related knowledge between countries and the dynamics of water research publishing opportunities. In summary, it shows that: less than 50% of all countries are publishing water-related research, that China and USA are the two top publishers, and that China’s publishing rate has bee

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